Prefabricated beam-column connection structure and installation method thereof

Abstract

The present application relates to the technical field of connecting node in general building construction, in particular to a fabricated beam-column connecting structure and a mounting method thereof.The present application can effectively adjust the mounting height of the end of the steel structure beam, effectively ensure the mounting and connecting strength of the steel structure beam, and ensure the transverse distance difference compensation of the steel structure beam in the process of adjusting the inclination angle, by presetting the transverse embedded pipe at different heights on the outer wall of the prefabricated concrete stand column, and adjusting and fixing the sleeve one at the end of the U-shaped rod and the support cross bar screwed into the transverse embedded pipe.When the same building is designed with various steel structure beams with mounting requirements, the same structure design can be adopted for the steel structure beams, which is convenient for batch production of the steel structure beams and installation of the steel structure beams in the construction process, and improves the versatility and convenience of the construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connecting node in general building construction, in particular to an assembled beam-column connecting structure and a mounting method thereof. BACKGROUND

[0002] Assembled building refers to a building which is manufactured by transferring a large number of on-site operations in traditional construction methods to a factory, processing and manufacturing building components and accessories in the factory, transporting them to the construction site, and assembling and installing them on site through reliable connecting methods. The connecting structure of the beam column is an important part of the assembled building.

[0003] At present, the assembled beam column structure is generally a concrete beam column or a steel structure beam column and is fixed by high-strength bolts. The concrete beam or steel structure beam is a horizontal beam, and the installation position of both ends is constant. For example, the Chinese patent document with publication number CN120331535A discloses an assembled concrete industrial plant structure, which includes multiple layers of plates connected and supported by prefabricated concrete columns. The layer plate includes a frame built by a concrete steel structure, and a pavement structure laid on the top of the frame. The frame includes a concrete cross beam, a concrete longitudinal beam, and a concrete secondary beam. The concrete cross beam, the concrete longitudinal beam, and the prefabricated concrete column are connected vertically by a main node. By combining concrete with I-beam, a more stable beam column is formed. The stable installation and connection of each part can be achieved by using main nodes and secondary nodes with bolts. In the above-mentioned scheme, the main node of the concrete cross beam, the concrete longitudinal beam, and the prefabricated concrete column is connected and fixed by bolts. The two ends of the beam are connected and fixed by conventional bolts. During the installation and construction process, the installation position of the two ends of the beam and the inclination angle of the beam cannot be adjusted adaptively, which greatly limits the installation and use of the beam. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an assembled beam-column connecting structure that can improve the versatility and convenience of beam installation.

[0005] The technical scheme adopted by the present application to solve its technical problems is: the assembled beam-column connection structure, comprising a prefabricated concrete stand and a steel structure beam, the steel structure beam is connected between two prefabricated concrete stands arranged oppositely through beam end connection assemblies, and at least two transverse embedded pipes are arranged at different heights on the outer wall of the prefabricated concrete stand; the beam end connection assemblies at both ends of the steel structure beam each comprise at least two U-shaped suspension devices, the U-shaped suspension devices at the same end of the steel structure beam are installed at the same height; each U-shaped suspension device comprises a U-shaped rod and two support cross bars, the U-shaped rod is composed of a straight rod one, an arc-shaped rod and a straight rod two connected in sequence, the end of the straight rod one and the straight rod two is fixedly provided with a sleeve one, the first ends of the two support cross bars are respectively threadedly connected with the sleeve one, and the second ends of the two support cross bars are respectively threadedly connected with the transverse embedded pipes located in the same vertical plane and at different heights; the two ends of the steel structure beam are respectively fixedly connected with a rotating arm, the U-shaped rod is provided with a longitudinal shaft at the center point of the arc-shaped rod, the axis of the longitudinal shaft is horizontally arranged along the width direction of the steel structure beam, the end of the rotating arm away from the steel structure beam is rotationally connected with the shaft limiting assembly on the inner side of the U-shaped rod, so that the rotating arm can rotate relative to the U-shaped rod around the axis of the longitudinal shaft, the steel structure beam is provided with a cross beam through hole, the arc-shaped rod of the U-shaped rod is correspondingly penetrated into the cross beam through hole, and the two ends of the steel structure beam and the U-shaped rod are connected through arc-shaped rod limiting assemblies respectively, the arc-shaped rod limiting assemblies have a first state of limiting and fixing the U-shaped rod and the steel structure beam and a second state of releasing the limiting and fixing of the U-shaped rod and the steel structure beam.

[0006] In order to improve the versatility of the prefabricated concrete stand and facilitate adaptive adjustment of the installation position and installation inclination angle of the steel structure beam, preferably, a plurality of groups of transverse embedded pipes are arranged at different heights on the outer wall of at least one prefabricated concrete stand, so that the U-shaped suspension device can be installed at different heights.

[0007] To improve the reliability of the connecting node, preferably, the prefabricated concrete column is provided with support upright steel bars, front and rear special-shaped I-beams and transverse connecting bars, the support upright steel bars are provided with a plurality of bars and are fixed by binding with hoops; the front and rear special-shaped I-beams are each composed of upright wide plates, upright short plates and upright connecting plates, the upright wide plates and the upright short plates are arranged in parallel and have the same length and different widths, the upright connecting plates are arranged between the upright wide plates and the upright short plates and are fixed at the center lines of the end faces of the upright wide plates and the upright short plates; the front and rear special-shaped I-beams are symmetrically arranged at the front and rear end faces of the prefabricated concrete column, the upright wide plates are attached to the outer walls of the prefabricated concrete column, and the upright short plates are arranged inside the prefabricated concrete column; four transverse embedded pipes are arranged on the outer wall of the front end face of the prefabricated concrete column at the same height, the first ends of the transverse embedded pipes penetrate through the upright wide plates of the front special-shaped I-beam and are fixed by welding, the second ends of the transverse embedded pipes are embedded inside the prefabricated concrete column, and the transverse embedded pipes are symmetrically arranged on the two sides of the upright connecting plates; the first ends of the transverse connecting bars correspond to the second ends of the transverse embedded pipes one by one and are fixed by welding in series, the second ends of the two transverse connecting bars on the outside are fixed by welding with the upright wide plates of the rear special-shaped I-beam, the second ends of the two transverse connecting bars on the inside penetrate through the upright short plates of the rear special-shaped I-beam and are fixed by welding, the second ends of the two transverse embedded pipes on the inside penetrate through the upright short plates of the front special-shaped I-beam and are fixed by welding; the transverse connecting bars and the transverse embedded pipes are fixed by welding or binding with at least one support upright steel bar.

[0008] To further improve the reliability of the connecting node, preferably, the longitudinal shaft is fixed relative to the U-shaped rod, and the rotating arm is provided with a rotating fitting hole matched with the longitudinal shaft; the longitudinal shaft on the two sides of the rotating arm is provided with a ring-shaped gasket and a locking nut, the locking nut is screwed into the longitudinal shaft through thread cooperation, and the ring-shaped gasket can be partially clamped in the gap between the rotating arm and the longitudinal shaft under the pushing of the locking nut, so as to achieve the limiting and fixing of the rotating arm.

[0009] In order to further improve the reliability of the connecting node and facilitate repeated disassembly, preferably, the shaft rod limiting assembly comprises a vertical suspender and a vertical support rod, the upper end of the vertical suspender is welded and fixed at the connecting position of the straight rod and the arc-shaped rod, and the longitudinal shaft rod is penetrated into the longitudinal mounting hole arranged at the lower end of the vertical suspender; the vertical support rod comprises a rotating support rod and a vertical fixed rod, the upper end of the rotating support rod is rotatably connected to the longitudinal shaft rod through a U-shaped support, screw nuts are arranged on the longitudinal shaft rod at the two sides of the U-shaped support, and the rotating support rod is limited and fixed through screw thread cooperation, and the lower end of the vertical suspender is arranged in the interior of the U-shaped support correspondingly; the upper end of the vertical fixed rod is welded with a sleeve two, the lower end of the rotating support rod is connected and fixed by screwing into the sleeve two, and the lower end of the vertical fixed rod is penetrated into the fixed rod mounting hole prearranged at the connecting position of the arc-shaped rod and the straight rod two, and is limited and fixed through the upper and lower screw nuts in screw thread cooperation.

[0010] In order to further improve the reliability of the connecting node and facilitate repeated disassembly, preferably, the steel structure beam is formed into an I-shaped structure by a vertical plate and two horizontal plates, two rotating arms are arranged, one end of the rotating arm connected to the steel structure beam is arranged at the two sides of the vertical plate of the steel structure beam, and is closely attached to the upper and lower horizontal plates of the steel structure beam, and the rotating arm and the vertical plate of the steel structure beam are fixed together through bolts; two beam penetrating holes are arranged at the two ends of the horizontal plate of the steel structure beam at the two sides of the vertical plate respectively, and the beam end connecting assembly at the two ends of the steel structure beam each comprises four U-shaped rods.

[0011] In order to facilitate control of the installation inclination angle of the steel structure beam, preferably, the center standard line is arranged on the end surface of the vertical plate of the steel structure beam, the inclination angle scale line is arranged on the arc-shaped rod of the U-shaped rod, and the center standard line and the inclination angle scale line are matched to enable the installation inclination angle value of the steel structure beam to be displayed.

[0012] In order to further improve the reliability of the connecting node and facilitate repeated disassembly and assembly, preferably, the arc-shaped rod limiting assembly at the two ends of the steel structure beam comprises two groups of limiting blocks and locking steel belts, each group of limiting blocks is composed of a left limiting block and a right limiting block, the two groups of limiting blocks are respectively arranged on the two sides of the vertical plate of the steel structure beam and are in limiting engagement with the circular arc rods of the two U-shaped rods, the vertical plate of the steel structure beam is provided with a steel belt through hole, the locking steel belts are penetrated into the steel belt through hole and are connected in a loop shape outside the two groups of limiting blocks, the head-to-tail connection of the locking steel belts is adjusted by the locking structure assembly to enable the locking steel belts to integrally lock and fix the two groups of limiting blocks, the steel structure beam and the four circular arc rods, the front end surface of each limiting block is a planar structure that is in abutment with the side end surface of the vertical plate of the steel structure beam, the upper and lower end surfaces of each limiting block are planar structures that are in abutment with the upper and lower horizontal plates of the steel structure beam, the outer side end surface and the rear end surface of each limiting block are in abutment and form a smooth circular arc or an elliptical arc, the connecting end surface of the left limiting block and the connecting end surface of the right limiting block are oppositely arranged, the connecting end surface of the left limiting block is respectively provided with a left half-arc rod groove, the connecting end surface of the right limiting block is respectively provided with a right half-arc rod groove, the circular arc rod of the U-shaped rod is provided with a plurality of annular limiting protrusions that are uniformly and spacedly distributed along the length direction of the circular arc rod, the left half-arc rod groove and the right half-arc rod groove are positionally corresponding and form a groove hole that is matched with the shape of the circular arc rod.

[0013] In order to further improve the reliability of the connection node, and facilitate repeated disassembly, the preferred scheme is that the locking structure assembly includes a gear housing, an adjusting gear and an anti-skid tooth device, the two ends of the locking steel belt corresponding to the first end and the tail end are respectively set as the locking steel belt A end and the locking steel belt B end, the gear housing is fixedly installed at the locking steel belt A end, the adjusting gear is rotatably installed in the gear housing, the gear housing on the circumferential side of the adjusting gear is provided with a steel belt passing hole, the locking steel belt B end penetrates through the steel belt passing hole of the gear housing, and the interference teeth arranged on the outer wall of the locking steel belt B end are engaged with the gear teeth arranged on the outer wall of the adjusting gear; the gear housing is provided with a gear adjusting hole on one side, a rotating adjusting column is installed on the side wheel surface of the adjusting gear, the outer end of the rotating adjusting column penetrates through the gear adjusting hole, and the rotating adjusting column can rotate the adjusting gear and drive the tightness adjustment of the locking steel belt; the anti-skid tooth device is arranged on one side of the connecting position of the locking steel belt and the adjusting gear close to the outer end surface of the locking steel belt B end; the anti-skid tooth device is composed of two equilateral triangle plates and three steel columns, the three steel columns are arranged between the two equilateral triangle plates, and are rotatably connected to the three corner regions of the equilateral triangle plates through shafts; two adjusting pin columns are fixedly arranged on the two equilateral triangle plates, strip-shaped holes are arranged on the two side end surfaces of the gear housing, and the length direction of the strip-shaped hole is parallel to the axial direction of the steel belt passing hole; the adjusting pin columns on the two equilateral triangle plates are respectively penetrated and clamped in the strip-shaped holes on the two side end surfaces of the gear housing; the adjusting pin column can reciprocate along the length direction of the strip-shaped hole, when the adjusting pin column moves to one end of the strip-shaped hole close to the adjusting gear, the steel columns in the anti-skid tooth device can be clamped with the tooth grooves on the adjusting gear and the tooth grooves on the locking steel belt at the same time, and when the adjusting pin column moves to one end of the strip-shaped hole away from the adjusting gear, the anti-skid tooth device is in a separated state relative to the adjusting gear.

[0014] Based on the foregoing assembly type beam-column connection structure, the application further provides an installation method of the assembly type beam-column connection structure, which comprises the following steps:

[0015] Step S1, installation of the prefabricated concrete column:

[0016] According to the drawings, the prefabricated concrete column is manufactured in the factory, and finally transported to the planning position at the installation site and vertically fixedly installed on the concrete ground through bolts;

[0017] Step S2, assembly of the U-shaped suspension device and the steel structure beam:

[0018] After the steel structure beam is placed horizontally, the U-shaped suspension device is installed at both ends of the steel structure beam, and the rotating arm is arranged to rotate relative to the U-shaped rod around the axis of the longitudinal shaft; the reserved support cross bar of the U-shaped suspension device is not connected;

[0019] Step S3, hoisting of the steel structure beam:

[0020] Step S31: Screw the multiple support crossbars corresponding to the first end of the steel structure beam into the horizontal embedded pipes of the corresponding precast concrete columns.

[0021] Step S32: The steel structure beam is lifted by a crane so that the multiple sleeves at its first end correspond one-to-one with the multiple support crossbars installed in step S31. Then, the support crossbars are rotated in the opposite direction so that they are gradually screwed into the sleeves and fixed, thereby realizing the fixed installation of the U-shaped suspension device at the first end of the steel structure beam.

[0022] Step S33: The steel structure beam is rotated around the longitudinal axis at its first end using a crane;

[0023] Step S34: After the steel structure beam is adjusted to the preset tilt angle, the multiple support crossbars corresponding to the second end of the steel structure beam are screwed into the horizontal embedded pipes of the corresponding precast concrete columns.

[0024] Step S35: Align the multiple sleeves at the second end of the steel structure beam with the multiple support crossbars installed in step S34, and then rotate the support crossbars in the opposite direction so that the support crossbars are gradually screwed into the sleeves and fixed, thereby realizing the fixed installation of the U-shaped suspension device at the second end of the steel structure beam.

[0025] Step S4, fixing and locking the steel structure beam:

[0026] The U-shaped rod and the steel structure beam are fixed and limited by the arc-shaped rod limiting component.

[0027] When it is necessary to readjust the steel structure beams (i.e., readjust the position, height, and installation tilt angle of the steel structure beams), the following procedure can be followed after step S4:

[0028] First, release the limiting fixation between the U-shaped rod and the steel structure beam; then, use a crane to suspend the steel structure beam to maintain its stability, and rotate the support crossbars at both ends of the steel structure beam to disengage them from the sleeve; finally, repeat steps S3 and S4 to complete the readjustment and installation of the steel structure beam's position, height, and installation tilt angle.

[0029] During the adjustment of the tilt angle of the steel structure beam, the distance between the two precast concrete columns and the length of the steel structure beam remain unchanged. However, the change in the tilt angle of the steel structure beam will cause a lateral distance difference between the two ends of the steel structure beam and the precast concrete columns. By adjusting the length of the support crossbar exposed to the outside of the lateral embedded pipe, the positional compensation of the lateral distance difference can be achieved.

[0030] The beneficial effects of this invention are:

[0031] (1) During the process of adjusting the tilt angle of the steel structure beam, the distance between the two precast concrete columns and the length of the steel structure beam remain unchanged. When the same building has steel structure beams with multiple installation requirements, the steel structure beams can all adopt the same structural design, which can facilitate the mass production of steel structure beams and the installation of steel structure beams during construction, thus improving their versatility and construction convenience.

[0032] (2) The present invention pre-embeds transverse pipes at different heights on the outer wall of the precast concrete column, and adjusts and fixes the sleeve at the end of the U-shaped rod and the transverse pipe through the threaded support crossbar. This not only facilitates the effective adjustment of the installation height of the steel structure beam end, but also effectively ensures the installation connection strength of the steel structure beam and ensures the compensation of the transverse distance difference of the steel structure beam during the tilt angle adjustment process.

[0033] (3) The present invention has U-shaped suspension devices installed at both ends of the steel structure beam, and the steel structure beam can rotate around the longitudinal axis of the U-shaped suspension device. The U-shaped suspension device facilitates the installation and adjustment of the tilt angle of the steel structure beam, and also facilitates the observation and identification of the tilt angle of the steel structure beam. The operation is convenient and labor-saving.

[0034] (4) The present invention adopts a strong column and weak beam structure design. Both ends of the steel structure beam are limited and fixed by arc rod limiting components and U-shaped suspension devices, which effectively improves the overall strength and stability of the beam and column structure and has high connection strength.

[0035] (5) The installation method described in this invention is simple, convenient, quick, safe and reliable. Attached Figure Description

[0036] Figure 1 : A schematic diagram of the prefabricated beam-column connection structure of the present invention (front view);

[0037] Figure 2 : Figure 1 A magnified view of the left-end region;

[0038] Figure 3 : Figure 2 Elevation section view in the AA direction;

[0039] Figure 4 : A top view of the cross-section of the precast concrete column of the present invention;

[0040] Figure 5 : A schematic diagram of the cross-sectional structure of the front and rear irregular-shaped I-beams of the present invention;

[0041] Figure 6 A partial three-dimensional structural diagram of the steel structure beam of the present invention;

[0042] Figure 7 : A schematic diagram of the U-shaped suspension device of the present invention (front view);

[0043] Figure 8 : A front view of the arc-shaped rod limiting assembly of the present invention (the locking structure assembly is not shown).

[0044] Figure 9 : A three-dimensional structural schematic diagram of the arc-shaped rod limiting component of the present invention (the locking structure component is not shown).

[0045] Figure 10 : A schematic diagram of the arc-shaped rod limiting assembly and locking structure assembly of the present invention in a top view;

[0046] Figure 11 : Figure 10 Enlarged structural diagram at point B;

[0047] Figure 12 : A schematic diagram of the anti-slip tooth device of the present invention (top view).

[0048] The components in the diagram are labeled as follows: 1. Precast concrete column; 11. Supporting upright steel bar; 12. Front irregular H-beam; 121. Upright wide plate; 122. Upright short plate; 123. Upright connecting plate; 13. Rear irregular H-beam; 14. Horizontal connecting bar; 15. Horizontal embedded pipe; 2. Steel structure beam; 21. Upper horizontal plate; 22. Lower horizontal plate; 23. Vertical plate; 24. Horizontal beam through hole; 25. Rotary arm fixing hole; 26. Steel strip through hole; 27. Center standard line; 3. U-shaped suspension device; 31. U-shaped rod; 31. Straight rod one; 312. Arc rod; 313. Straight rod two; 314. Sleeve one; 315. Inclined angle scale line; 32. Supporting horizontal bar; 33. Vertical... Hanging rod 33, vertical support rod 34, rotating support rod 341, vertical fixed rod 342, sleeve 2 343, U-shaped support 344, longitudinal shaft 35, rotating arm 36, annular washer 37, locking nut 38, arc-shaped rod limiting assembly 4, left limiting block 41, right limiting block 42, left half-arc rod groove 411, right half-arc rod groove 421, locking steel strip 43, interference tooth 431, locking structure assembly 5, gear housing 51, gear adjusting hole 511, strip hole 512, adjusting gear 52, rotating adjusting column 521, anti-slip tooth device 53, equilateral triangle plate 531, steel column 532, adjusting pin 533. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] like Figures 1 to 12As shown, the prefabricated beam-column connection structure of the present invention includes precast concrete columns 1 and steel structure beams 2. The steel structure beams 2 are connected between two precast concrete columns 1 arranged opposite each other by beam end connection components. At least two transverse embedded pipes 15 are pre-set at different heights on the outer wall of the precast concrete columns 1. The beam end connection components at both ends of the steel structure beams 2 include at least two U-shaped suspension devices 3. The U-shaped suspension devices 3 located at the same end of the steel structure beams 2 are installed at the same height, which is equivalent to at least two U-shaped suspension devices 3 located at the same installation height being provided at the first end of the steel structure beams 2 and at least two U-shaped suspension devices 3 located at the same installation height being provided at the second end of the steel structure beams 2. The installation heights of the U-shaped suspension devices 3 at the first end of the steel structure beams 2 and the U-shaped suspension devices 3 at the second end of the steel structure beams 2 can be the same or different, depending on the installation requirements of the steel structure beams 2. It is understandable that the installation height of the U-shaped suspension devices 3 at both ends of the steel structure beam 2 determines the installation tilt angle of the steel structure beam 2. If the installation height of the U-shaped suspension devices 3 at both ends of the steel structure beam 2 is the same, then the steel structure beam 2 is arranged horizontally. When the steel structure beam 2 needs to be adjusted to different installation tilt angles, the installation height of the U-shaped suspension devices 3 needs to be changed accordingly. To improve the versatility of the precast concrete column 1 and facilitate adaptive adjustment of the installation position and installation tilt angle of the steel structure beam 2, a preferred solution is that at least one precast concrete column 1 has multiple sets of transverse embedded pipes 15 at different heights on its outer wall, so that the U-shaped suspension devices 3 can be installed at different heights. That is, it is equivalent to having multiple sets of transverse embedded pipes 15 at different heights on the outer wall of any one of the precast concrete columns 1, or having multiple sets of transverse embedded pipes 15 at different heights on the outer walls of both precast concrete columns 1. A further preferred solution is that both precast concrete columns 1 have multiple sets of transverse embedded pipes 15 at different heights on their outer walls. In some alternative embodiments, when the same building has steel structure beams 2 with multiple installation requirements, the precast concrete columns 1 and the horizontal embedded pipes 15 can be specially customized according to the installation requirements of each steel structure beam 2 (the design height of the horizontal embedded pipes 15 corresponds one-to-one with the installation requirements of the steel structure beam 2). However, the steel structure beams 2 all adopt a general structure. The difference in lateral distance between the two ends of the steel structure beam 2 and the precast concrete columns 1 is compensated for by the support crossbars 32 described later.

[0051] Each U-shaped suspension device 3 includes a U-shaped rod 31 and two supporting crossbars 32. The U-shaped rod 31 is composed of a straight rod 311, an arc-shaped rod 312, and a straight rod 313 connected in series (the U-shaped rod 31 is usually an integral structure). The ends of the straight rod 311 and the straight rod 313 are fixed with sleeves 314. The sleeves 314 can be designed as an integral structure with the U-shaped rod 31, or they can be welded and fixed as a whole, or they can be connected and fixed by threads. The first ends of the two supporting crossbars 32 are respectively threaded to the sleeves 314, and the second ends of the two supporting crossbars 32 are respectively threaded to the horizontal pre-embedded pipes 15 located in the same vertical plane but at different heights. That is, the straight rods 311 and 313 of the U-shaped rod 31 are arranged vertically at intervals. The opening of the U-shaped rod 31 faces the side wall of the U-shaped rod 31. "Arc-shaped rod 312" refers to its length direction extending along the arc-shaped distribution line.

[0052] Both ends of the steel structure beam 2 are fixedly connected to rotating arms 36. A longitudinal shaft 35 is set at the center point corresponding to the arc-shaped rod 312 on the U-shaped rod 31. The "center point corresponding to the arc-shaped rod 312" refers to the center point corresponding to the "arc-shaped distribution line" mentioned above. The axis of the longitudinal shaft 35 is set horizontally along the width direction of the steel structure beam 2. The end of the rotating arm 36 away from the steel structure beam 2 is rotatably connected to the shaft limiting assembly inside the U-shaped rod 31, so that the rotating arm 36 The steel beam 2 has a crossbeam through hole 24, which allows the U-shaped rod 31 to rotate around the axis of the longitudinal shaft 35. The arc-shaped rod 312 of the U-shaped rod 31 passes through the crossbeam through hole 24. Both ends of the steel beam 2 are connected to the U-shaped rod 31 via arc-shaped rod limiting components 4. The arc-shaped rod limiting components 4 have a first state that limits and fixes the U-shaped rod 31 and the steel beam 2, and a second state that releases the U-shaped rod 31 and the steel beam 2 from the limiting and fixing state. The structure of the crossbeam through hole 24 should not affect the rotation of the swing arm 36 and the steel beam 2 as a whole around the axis of the longitudinal shaft 35 relative to the U-shaped rod 31. The crossbeam through hole 24 can typically be an arc-shaped hole or a long, narrow hole.

[0053] When the present invention is implemented using the above-described scheme, it generally includes the following steps:

[0054] Step S1, Installation of precast concrete column 1:

[0055] According to the drawings, the precast concrete column 1 is manufactured in the factory and then transported to the planned location at the installation site, where it is vertically fixed to the concrete ground with bolts.

[0056] Step S2, Assembly of the U-shaped suspension device 3 and the steel structure beam 2:

[0057] After the steel structure beam 2 is placed horizontally, U-shaped suspension devices 3 are installed at both ends of the steel structure beam 2, so that the swing arm 36 can rotate around the axis of the longitudinal shaft 35 relative to the U-shaped rod 31; the U-shaped suspension device 3 has a reserved support crossbar 32 that is not connected.

[0058] Step S3, hoisting of steel structure beam 2:

[0059] Step S31: Screw the multiple support crossbars 32 corresponding to the first end of the steel structure beam 2 into the horizontal embedded pipes 15 of the corresponding precast concrete column 1.

[0060] In step S32, the steel structure beam 2 is lifted by a crane so that the multiple sleeves 314 at its first end correspond one-to-one with the multiple support crossbars 32 installed in step S31. Then, the support crossbars 32 are rotated in opposite directions so that they are gradually screwed into the sleeves 314 for fixation, thereby achieving the fixed installation of the U-shaped suspension device 3 at the first end of the steel structure beam 2.

[0061] Step S33: The steel structure beam 2 is rotated around the longitudinal axis 35 at its first end by a crane;

[0062] Step S34: After the steel structure beam 2 is adjusted to the preset tilt angle, the multiple support crossbars 32 corresponding to the second end of the steel structure beam 2 are screwed into the horizontal embedded pipes 15 of the corresponding precast concrete column 1.

[0063] In step S35, the multiple sleeves 314 at the second end of the steel structure beam 2 are matched one-to-one with the multiple support crossbars 32 installed in step S34. Then, the support crossbars 32 are rotated in the opposite direction to gradually screw into the sleeves 314 for fixation, thereby realizing the fixed installation of the U-shaped suspension device 3 at the second end of the steel structure beam 2.

[0064] Step S4, fixing and locking steel beam 2:

[0065] The U-shaped rod 31 and the steel structure beam 2 are fixed and limited by the arc-shaped rod limiting component 4.

[0066] When it is necessary to readjust the construction of steel structure beam 2 (i.e., readjust the position, height, and installation tilt angle of steel structure beam 2), the construction can be carried out according to the following plan after step S4:

[0067] First, release the limiting fixation between the U-shaped rod 31 and the steel structure beam 2; then, use a crane to suspend the steel structure beam 2 to maintain its stability, and rotate the support crossbars 32 at both ends of the steel structure beam 2 to disengage them from the sleeve 314; finally, repeat steps S3 and S4 to complete the readjustment and installation of the position height and installation tilt angle of the steel structure beam 2.

[0068] During the adjustment of the tilt angle of the steel structure beam 2, the distance between the two precast concrete columns 1 and the length of the steel structure beam 2 remain unchanged. However, the change in the tilt angle of the steel structure beam 2 will cause a lateral distance difference between the two ends of the steel structure beam 2 and the precast concrete columns 1. By adjusting the length of the support crossbar 32 exposed to the outside of the lateral embedded pipe 15, the position compensation of the lateral distance difference can be achieved.

[0069] This invention, by pre-embedding transverse pipes 15 at different heights on the outer wall of the precast concrete column 1, and adjusting and fixing the sleeve 314 at the end of the U-shaped rod 31 to the transverse pre-embedding pipe 15 via a threaded support crossbar 32, not only facilitates effective adjustment of the installation height of the steel structure beam 2, but also effectively ensures the installation connection strength of the steel structure beam 2 and guarantees compensation for lateral distance differences during the tilt angle adjustment process. U-shaped suspension devices 3 are installed at both ends of the steel structure beam 2, and the steel structure beam 2 can rotate around the longitudinal axis 35 of the U-shaped suspension device 3, which facilitates the installation and adjustment of the tilt angle of the steel structure beam 2. After the steel structure beam 2 is initially installed, the U-shaped rod 31 of the U-shaped suspension device 3 is fixed to the steel structure beam 2 by the arc-shaped rod limiting component 4, effectively improving the overall structural strength and stability of the beam and column, and ensuring high connection strength. The installation method of this invention is simple, convenient, quick, safe, and reliable.

[0070] To improve the reliability of the connection nodes, the preferred embodiment is that the precast concrete column 1 is equipped with supporting vertical reinforcing bars 11, front irregular-shaped H-beams 12, rear irregular-shaped H-beams 13, and transverse connecting bars 14. Several supporting vertical reinforcing bars 11 are provided and secured by stirrups. The front irregular-shaped H-beams 12 and 13 are each composed of a vertical wide plate 121, a vertical short plate 122, and a vertical connecting plate 123. The vertical wide plate 121 and short plate 122 are arranged parallel to each other with the same length but different widths. The vertical connecting plate 123 is positioned between the vertical wide plate 121 and the vertical short plate 122, with its two ends fixed to the center lines of the end faces of the vertical wide plate 121 and the vertical short plate 122, respectively. The front irregular-shaped H-beams 12 and 13 are symmetrically arranged at the front and rear ends of the precast concrete column 1, and the vertical wide plate 121... 1. The vertical short plate 122 is attached to the outer wall of the precast concrete column 1 and placed inside the precast concrete column 1 (that is, the vertical wide plate 121 of the front irregular I-beam 12 is set on the front end face of the precast concrete column 1, and the vertical wide plate 121 of the rear irregular I-beam 13 is set on the rear end face of the precast concrete column 1). The front end face of the precast concrete column 1 is the end face near the steel structure beam 2. Four transverse embedded pipes 15 are set on the outer wall of the front end face of the precast concrete column 1 at the same height. The first end of the transverse embedded pipe 15 passes through the vertical wide plate 121 of the front irregular I-beam 12 and is welded and fixed. The second end is embedded inside the precast concrete column 1. The transverse embedded pipes 15 are symmetrically arranged on both sides of the vertical connecting plate 123 (that is, two transverse embedded pipes 15 are arranged on each side of the vertical connecting plate 123). The first end of the transverse connecting rib 14 corresponds one-to-one with the second end of the transverse embedded pipe 15 and is welded and fixed in series. The second ends of the two outer transverse connecting ribs 14 are welded and fixed to the vertical wide plate 121 of the rear irregular H-beam 13. The second ends of the two inner transverse connecting ribs 14 pass through the vertical short plate 122 of the rear irregular H-beam 13 and are welded and fixed. The second ends of the two inner transverse embedded pipes 15 pass through the vertical short plate 122 of the front irregular H-beam 12 and are welded and fixed. The transverse connecting ribs 14 and the transverse embedded pipes 15 are all welded or tied to at least one supporting vertical reinforcing bar 11. It can be understood that a conventional H-beam refers to a beam with two flanges of the same width. The front irregular H-beam 12 and the rear irregular H-beam 13 of this invention refer to beams with two flanges of different widths. The specific structures of the front irregular-shaped I-beam 12 and the rear irregular-shaped I-beam 13 have been clearly defined above in this invention, therefore the definition of "irregular-shaped I-beam" is clear. In specific implementation, based on the structural connection of the supporting vertical reinforcing bars 11, the front irregular-shaped I-beam 12, the rear irregular-shaped I-beam 13, the transverse connecting bars 14, and the embedded pipes 15, a precast concrete column 1 is obtained by pouring concrete. After adopting the above scheme, this invention realizes a strong column-weak beam structure design, effectively improving the overall structural strength and stability of the beam and column, and achieving high connection strength.

[0071] In the conventional embodiment of this invention, the entire rotating arm 36 and steel structure beam 2 can rotate relative to the U-shaped rod 31 around the axis of the longitudinal shaft 35. The longitudinal shaft 35 can be fixed relative to the rotating arm 36 or the U-shaped rod 31. To further improve the reliability of the connection node, a preferred embodiment is that the longitudinal shaft 35 is fixed relative to the U-shaped rod 31, and the rotating arm 36 is provided with a rotational fitting hole adapted to the longitudinal shaft 35; annular washers 37 and locking nuts 38 are provided on the longitudinal shafts 35 on both sides of the rotating arm 36. The locking nuts 38 are screwed into the longitudinal shafts 35 through a threaded engagement, and the annular washers 37 can be partially engaged in the gap between the rotating arm 36 and the longitudinal shaft 35 under the push of the locking nuts 38, so as to achieve the limiting and fixing of the rotating arm 36. With the above solution, when the locking nut 38 is loose, the rotating arm 36 and the steel beam 2 can rotate relative to the U-shaped rod 31 around the axis of the longitudinal shaft 35. When the locking nut 38 is tightened, the longitudinal shaft 35 and the rotating arm 36 are fixed in place, meaning the rotating arm 36 and the steel beam 2 cannot rotate relative to the U-shaped rod 31 around the axis of the longitudinal shaft 35. After the steel beam 2 is installed, the longitudinal shaft 35 and the rotating arm 36 are fixed in place by the annular washer 37 and the locking nut 38, and the U-shaped rod 31 is fixed in place by the arc-shaped rod limiting assembly 4, thus achieving a double locking effect and effectively ensuring the reliability of the overall structure.

[0072] To further improve the reliability of the connection nodes and facilitate repeated disassembly and assembly, the preferred embodiment is that the shaft limiting assembly includes a vertical hanger 33 and a vertical support rod 34. The upper end of the vertical hanger 33 is welded and fixed to the connection between the straight rod 311 and the arc-shaped rod 312. The longitudinal shaft 35 passes through the longitudinal mounting hole provided at the lower end of the vertical hanger 33. The vertical support rod 34 includes a rotating support rod 341 and a vertical fixing rod 342. The upper end of the rotating support rod 341 is rotatably connected to the longitudinal shaft 35 through a U-shaped support 344. Nuts are installed on the longitudinal shaft 35 on both sides of the U-shaped support 344, and the shaft is fixed by screws. The vertical support rod 341 is fixed in place by a threaded fit, while the lower end of the vertical hanger 33 is correspondingly positioned inside the U-shaped support 344, thus avoiding interference between the vertical hanger 33 and the rotating support rod 341 at the connection point on the longitudinal axis 35. A sleeve 343 is welded to the upper end of the vertical fixing rod 342, and the lower end of the rotating support rod 341 is screwed into the sleeve 343 for connection and fixation. The lower end of the vertical fixing rod 342 passes through a pre-set fixing rod mounting hole at the connection point of the arc-shaped rod 312 and the straight rod 313, and is fixed in place by two nuts threaded into it. The vertical support rod 34 provides effective support for the longitudinal axis 35, preventing the weight of the steel beam 2 from deforming the vertical hanger 33 and affecting the stability of the entire beam-column frame structure. It is understood that there are multiple implementations of the shaft limiting assembly (i.e., there are multiple ways to fix the longitudinal shaft 35). For example, in some alternative embodiments, the upper end of the vertical hanger 33 can be welded and fixed to the connection between the straight rod 311 and the arc-shaped rod 312, and the longitudinal shaft 35 can pass through the longitudinal mounting hole provided at the lower end of the vertical hanger 33 and be welded and fixed.

[0073] To further improve the reliability of the connection nodes and facilitate repeated disassembly and assembly, the preferred solution is that the steel structure beam 2 is formed by a vertical plate 23 and two horizontal plates, which are the upper horizontal plate 21 and the lower horizontal plate 22. Two rotating arms 36 are provided, with one end of each arm connecting to the steel structure beam 2 positioned on both sides of the vertical plate 23 and tightly fitted to the upper and lower horizontal plates. The rotating arms 36 are fixed to the vertical plate 23 of the steel structure beam 2 with bolts. Correspondingly, both the rotating arms 36 and the vertical plate 23 of the steel structure beam 2 have... The rotating arm fixing hole 25 for connecting bolts is provided. The annular washer 37 and locking nut 38 generally only need to be set on the surface of the rotating arm 36 away from the vertical plate 23. Both ends of the horizontal plate of the steel structure beam 2 are provided with two horizontal beam through holes 24 on both sides of the vertical plate 23. The beam end connecting components at both ends of the steel structure beam 2 include four U-shaped rods 31. Correspondingly, the upper horizontal plate 21 has a total of eight horizontal beam through holes 24 (four at one end) at both ends, and the lower horizontal plate 22 also has a total of eight horizontal beam through holes 24 (four at one end) at both ends.

[0074] To facilitate control of the installation tilt angle of the steel structure beam, the preferred solution is that a center standard line 27 is provided on both ends of the vertical plate 23 of the steel structure beam 2, and a tilt angle scale line 315 is provided on the arc-shaped rod 312 of the U-shaped rod 31. The center standard line 27 and the tilt angle scale line 315 cooperate to display the installation tilt angle value of the steel structure beam 2.

[0075] To further improve the reliability of the connection nodes and facilitate repeated disassembly and assembly, the preferred solution is that the arc-shaped rod limiting components 4 at both ends of the steel structure beam 2 each include two sets of limiting blocks and locking steel bands 43. Each set of limiting blocks consists of a left limiting block 41 and a right limiting block 42. The two sets of limiting blocks are respectively placed on both sides of the vertical plate 23 of the steel structure beam 2 and are limited and engaged with the arc-shaped rods 312 of the two U-shaped rods 31. The vertical plate 23 of the steel structure beam 2 is provided with steel band through holes 26. The locking steel bands 43 pass through the steel band through holes 26 and are connected end to end to form a loop to bind the two sets of limiting blocks to the outside of the two sets of limiting blocks. The tightness of the locking steel bands 43 is adjusted by the locking structure component 5 so that the locking steel bands 43 can lock and fix the two sets of limiting blocks to the steel structure beam 2 and the four arc-shaped rods 312 as a whole. Each limiting block The front end faces of each limiting block are planar structures that fit against the side end faces of the vertical plates 23 of the steel structure beam 2. The upper and lower end faces of each limiting block are planar structures that fit against the upper and lower horizontal plates of the steel structure beam 2. The outer end face and rear end face of each limiting block are connected to form a smooth arc or elliptical arc. The connecting end faces of the left limiting block 41 and the right limiting block 42 are arranged opposite to each other. The connecting end face of the left limiting block 41 is provided with a left half-arc rod groove 411, and the connecting end face of the right limiting block 42 is provided with a right half-arc rod groove 421. The arc rod 312 of the U-shaped rod 31 is provided with several annular limiting protrusions evenly spaced along its length. The left half-arc rod groove 411 and the right half-arc rod groove 421 are in corresponding positions, and the slot formed by their combination is adapted to the shape of the arc rod 312. The locking steel strip 43 can generally be designed as a single piece, or it can be designed as two symmetrically arranged strips (two strips connected end to end to form a circle). By adopting the above scheme, the shape and structure of the left limiting block 41 and the right limiting block 42 can not only achieve close fit and efficient limiting with the steel structure beam 2, but also facilitate the locking of the steel strip 43 for locking and fixing, and can achieve efficient engagement and locking with the arc-shaped rod 312.

[0076] To further improve the reliability of the connection nodes and facilitate repeated disassembly and assembly, the preferred embodiment is that the locking structure assembly 5 includes a gear housing 51, an adjusting gear 52, and an anti-slip tooth device 53. The locking steel strip 43 has two ends corresponding to its head and tail connections designated as locking steel strip end A and locking steel strip end B, respectively. The gear housing 51 is fixedly installed at locking steel strip end A, and the adjusting gear 52 is rotatably installed inside the gear housing 51. A steel strip through-hole is provided on one circumferential side of the gear housing 51 for the adjusting gear 52. The locking steel strip end B passes through the steel strip through-hole in the gear housing 51, and the locking steel strip... The interference teeth 431 on the outer wall of end B mesh with the gear teeth on the outer wall of the adjusting gear 52; a gear adjusting hole 511 is provided on one side of the gear housing 51, and a rotating adjusting column 521 is installed on one side of the adjusting gear 52. The outer end of the rotating adjusting column 521 passes through the gear adjusting hole 511. The adjusting gear 52 can be rotated by rotating the adjusting column 521, which in turn drives the tension adjustment of the locking steel belt 43. That is, the structure of the gear adjusting hole 511 should not interfere with the adjusting column 521 driving the adjusting gear 52 to rotate; the anti-slip tooth device 53 is provided between the locking steel belt 43 and the gear adjusting hole 52. The adjusting gear 52 is connected to the side near the outer end face of the locking steel strip B; the anti-slip gear device 53 consists of two equilateral triangular plates 531 and three steel columns 532, with the three steel columns 532 positioned between the two equilateral triangular plates 531 and rotatably connected to the three corner areas of the equilateral triangular plates 531 via rotating shafts; two adjusting pins 533 are fixedly installed on each of the two equilateral triangular plates 531; slotted holes 512 are provided on both end faces of the gear housing 51, with the length direction of the slotted holes 512 parallel to the axial direction of the steel strip through the hole; the two equilateral triangular plates 531... The adjusting pins 533 on the gear housing 51 pass through and engage in the slotted holes 512 on both sides of the gear housing 51. The adjusting pins 533 can reciprocate along the length of the slotted holes 512. When the adjusting pins 533 move to the end of the slotted holes 512 that is close to the adjusting gear 52, the steel pins 532 in the anti-slip gear device 53 can engage with the tooth grooves on the adjusting gear 52 and the tooth grooves on the locking steel band 43 at the same time. When the adjusting pins 533 move to the end of the slotted holes 512 that is far away from the adjusting gear 52, the anti-slip gear device 53 is in a separated state relative to the adjusting gear 52.

[0077] by Figure 11Taking the locking structure component 5 as an example, its working principle is as follows: When the adjusting gear 52 rotates counterclockwise, it will drive the locking steel band 43 to lock; at the same time, the three steel pillars 532 of the anti-slip tooth device 53 will be pushed by the interference teeth 431 on the outer wall of the locking steel band 43 and the gear teeth on the outer wall of the adjusting gear 52, causing the two adjusting pins 533 to slide in the strip hole 512 and move the entire anti-slip tooth device 53 away from the adjusting gear 52. Once the adjusting gear 52 rotates clockwise, the three steel pillars 532 of the anti-slip tooth device 53 will be pushed by the interference teeth 431 on the outer wall of the locking steel band 43 (or the two adjusting pins 533 can be manually moved), causing the two adjusting pins 533 to slide in the strip hole 512 and move the entire anti-slip tooth device 53 closer to the adjusting gear 52, and finally engage at the connection between the adjusting gear 52 and the locking steel band 43, thereby preventing the adjusting gear 52 from continuing to rotate clockwise, achieving the purpose of preventing the locking steel band 43 from slipping.

[0078] In practice, when it is necessary to lock the locking steel band 43, the locking steel band 43 is tightened by rotating the adjusting gear 52 counterclockwise. After it is tightened, the two adjusting pins 533 can be manually moved to make the entire anti-slip tooth device 53 engage at the connection between the adjusting gear 52 and the locking steel band 43, thereby preventing the adjusting gear 52 from rotating in the opposite direction (i.e., clockwise). If it is necessary to unlock the locking steel band 43, the two adjusting pins 533 can be manually moved while keeping them away from the adjusting gear 52, and the adjusting gear 52 can be rotated clockwise.

[0079] In a preferred embodiment of the present invention, the following steps are generally included:

[0080] Step S1, Installation of precast concrete column 1:

[0081] According to the drawings, the precast concrete column 1 is manufactured in the factory and then transported to the planned location at the installation site, where it is vertically fixed to the concrete ground with bolts.

[0082] Step S2, Assembly of the U-shaped suspension device 3 and the steel structure beam 2:

[0083] After the steel structure beam 2 is placed horizontally, U-shaped suspension devices 3 are installed at both ends of the steel structure beam 2, so that the swing arm 36 can rotate around the axis of the longitudinal shaft 35 relative to the U-shaped rod 31; the U-shaped suspension device 3 has a reserved support crossbar 32 that is not connected.

[0084] The specific installation method of the U-shaped suspension device 3 is as follows: four U-shaped suspension devices 3 are placed side by side at one end of the steel structure beam 2, and their arc-shaped rods 312 are respectively inserted into the four horizontal beam through holes 24 at one end of the steel structure beam 2. The rotating support rods 341, vertical hangers 33 and rotating arms 36 of the four U-shaped suspension devices 3 are connected together by a longitudinal shaft rod 35, so as to maintain the free rotation of the rotating support rods 341 and rotating arms 36. The outer ends of the two rotating arms 36 are respectively clamped to both sides of the vertical plate 23 of the steel structure beam 2 and fixed with bolts. The lower end of the vertical fixing rod 342 is inserted into the fixing rod mounting hole of the U-shaped rod 31. The vertical fixing rod 342 is rotated and the lower end of the rotating support rod 341 is screwed into the sleeve 343 at the upper end of the vertical fixing rod 342 for fixation. Then, the upper and lower nuts on the vertical fixing rod 342 are used to fix it to the U-shaped rod 31. Finally, the nuts on both sides of the rotating support rod 341 are rotated to tighten the rotating support rod 341 to the longitudinal shaft 35. Following the above method, the four U-shaped suspension devices 3 at the other end of the steel structure beam 2 are installed.

[0085] Step S3, hoisting of steel structure beam 2:

[0086] Step S31: Screw all eight support crossbars 32 corresponding to the first end of the steel structure beam 2 into the horizontal embedded pipes 15 of the corresponding precast concrete column 1.

[0087] In step S32, the steel structure beam 2 is lifted by a crane so that the eight sleeves 314 at its first end correspond one-to-one with the eight support crossbars 32 installed in step S31. Then, the support crossbars 32 are rotated in opposite directions so that they are gradually screwed into the sleeves 314 for fixation, thereby achieving the fixed installation of the U-shaped suspension device 3 at the first end of the steel structure beam 2.

[0088] Step S33: The steel structure beam 2 is rotated around the longitudinal axis 35 at its first end by a crane;

[0089] Step S34: After the steel structure beam 2 is adjusted to the preset tilt angle, the eight support crossbars 32 corresponding to the second end of the steel structure beam 2 are screwed into the horizontal embedded pipes 15 of the corresponding precast concrete column 1.

[0090] In step S35, the eight sleeves 314 at the second end of the steel structure beam 2 are matched one-to-one with the eight support crossbars 32 installed in step S34. Then, the support crossbars 32 are rotated in opposite directions to gradually screw into the sleeves 314 for fixation, thereby achieving the fixed installation of the U-shaped suspension device 3 at the second end of the steel structure beam 2.

[0091] Step S4, fixing and locking steel beam 2:

[0092] The longitudinal shaft 35 and the swing arm 36 are fixed together by annular gaskets 37 and locking nuts 38. The U-shaped rod 31 is fixed to the steel structure beam 2 by arc rod limiting assembly 4. The specific installation method of arc rod limiting assembly 4 is as follows: first, the limiting blocks are placed on both sides of the vertical plate 23 of the steel structure beam 2 and locked with the arc rod 312 of the U-shaped suspension device 3; then, the locking steel strip 43 is inserted through the steel strip through hole 26 and connected end to end to form a ring and bind it to the outside of the limiting block. The tension of the locking steel strip 43 is adjusted by locking structure assembly 5 so that the locking steel strip 43 locks and fixes the two sets of limiting blocks, the steel structure beam 2 and the four arc rods 312 as a whole. The operation method of component 5 is as follows: First, the corresponding end of the locking steel strip 43 is inserted through the steel strip through hole of the gear housing 51 at one end of the locking steel strip 43, so that the interference teeth 431 set on the outer wall of the locking steel strip 43 meshes with the gear teeth set on the outer wall of the adjusting gear 52; then, the adjusting gear 52 is rotated or the locking steel strip 43 is pulled, which drives the locking steel strip 43 to tighten the entire limiting block. After it is tightened to the position, the two adjusting pins 533 are manually moved to make the entire anti-slip tooth device 53 engage at the connection between the adjusting gear 52 and the locking steel strip 43, so as to prevent the adjusting gear 52 from rotating in the opposite direction and thus realize the locking and fixing of the arc rod limiting component 4 with the steel structure beam 2 and the arc rod 312.

[0093] When it is necessary to readjust the steel structure beam 2 (i.e., readjust the position, height, and installation tilt angle of the steel structure beam 2), the following procedure can be followed after step S4: First, release the limiting fixation between the U-shaped rod 31 and the steel structure beam 2 (including the limiting fixation between the longitudinal shaft 35 and the swing arm 36 using the annular gasket 37 and the locking nut 38, and the limiting fixation between the U-shaped rod 31 and the steel structure beam 2 using the arc-shaped rod limiting assembly 4); then, use a crane to suspend the steel structure beam 2 to maintain its stability, and rotate the support crossbars 32 at both ends of the steel structure beam 2 to disengage them from the sleeve 314; finally, repeat steps S3 and S4 to complete the readjustment and installation of the position, height, and installation tilt angle of the steel structure beam 2.

[0094] This invention can be applied to multiple architectural scenarios, some of which are as follows:

[0095] 1. Irregularly shaped buildings: suitable for irregular appearances and spatial designs.

[0096] 1. Scene Description:

[0097] Modern architecture (such as art galleries, science and technology museums, and irregularly shaped commercial complexes) often employs irregular designs such as "sloping roofs," "zigzag facades," and "curved spaces" to achieve visual artistry or functional specificity. For example, in the "Starry Sky Exhibition Hall" of a certain city's science and technology museum, the roof is a continuous "wave-shaped curved surface." The columns inside the exhibition hall need to support steel structural beam 2 that fits against the curved roof. If steel structural beam 2 is a traditional horizontal structure, it cannot match the support points of the curved roof, which would lead to uneven stress on the roof or a discontinuous shape.

[0098] 2. Adjusting demand:

[0099] Installation position (height) adjustment: The height of the support point of the curved roof varies with the undulation of the curved surface (e.g., the height of the roof support point at column A is 3.5m, and the height of the support point at the adjacent column B is 2.8m). It is necessary to adjust the installation height at both ends of the steel structure beam 2 so that the top surface of the steel structure beam 2 is precisely aligned with the roof support point.

[0100] Inclination angle adjustment: Each segment of the wavy curved surface must have a specific inclination angle (such as 15° or 22°) corresponding to the steel structure beam 2 in order to fully fit the curvature of the curved surface and avoid gaps or stress concentration between the roof and the steel structure beam 2.

[0101] 3. Applications of the present invention:

[0102] Based on the support point height and tilt angle installation requirements of the curved roof, horizontal embedded pipes 15 at different heights are installed on the precast concrete columns 1. The installation height of the steel structure beam 2 end can be flexibly selected (e.g., horizontal embedded pipe 15 is installed at 3.5m on column A, and horizontal embedded pipe 15 is installed at 2.8m on column B). Then, through the rotation structure involving the longitudinal axis 35 of the U-shaped suspension device 3, the steel structure beam 2 is precisely adjusted to the preset tilt angle to ensure perfect fit with the wave-shaped roof. At the same time, the angle is locked by the arc-shaped rod limiting component 4 to ensure structural stability.

[0103] II. Mountain / slope buildings: adapt to terrain elevation differences and reduce site modifications.

[0104] 1. Scene Description:

[0105] Mountain guesthouses, hillside villas, and other similar buildings need to be "built against the mountain," and the site must have natural topographical differences (such as a ground slope of 10%-20%). For example, the "viewing terrace" of a mountain guesthouse needs to be built on a hillside with a slope of 15°, and the columns under the terrace need to be fixed to the ground at different altitudes (such as the bottom of the front column at an altitude of 500m and the bottom of the rear column at an altitude of 508m). If the beam is a horizontal structure, it will cause one end of the beam to be suspended or the two ends to be unbalanced.

[0106] 2. Adjusting demand:

[0107] Installation position (height) adjustment: Due to the different elevations at the bottom of the columns, there is a height difference at the "beam connection point" at the top of the columns (e.g., the top beam connection point of the front column is 2.2m high, and the top of the rear column is 2.9m high). It is necessary to adjust the installation height of both ends of the steel structure beam 2 so that the top surface of the steel structure beam 2 remains horizontal (or conforms to the design slope of the terrace).

[0108] Tilt angle adjustment: The terrace needs to be set with a 1%-2% "drainage tilt angle" (opposite to the terrain slope) to avoid rainwater accumulation. Therefore, steel structure beam 2 needs to be adjusted by an additional 1.5° tilt angle on the basis of "adapting to the terrain elevation difference" to take into account both the horizontal visual effect of the terrace and the drainage function.

[0109] 3. Applications of the present invention:

[0110] Depending on the terrain conditions, transverse embedded pipes 15 at different heights are installed on the precast concrete columns 1, allowing for flexible selection of the installation height at the ends of the steel structure beams 2 (e.g., the front beam end is connected to the transverse embedded pipe 15 at a height of 2.2m via a short support crossbar, and the rear end is connected to the transverse embedded pipe 15 at a height of 2.9m via a long support crossbar), compensating for terrain elevation differences. Then, through the rotation structure involving the longitudinal axis 35 of the U-shaped suspension device 3, the steel structure beam 2 is precisely adjusted to the preset tilt angle, eliminating the need for large-scale excavation and leveling of the hillside and reducing site modification costs.

[0111] III. Variable Functionality: Dynamically adjustable to meet user needs.

[0112] 1. Scene Description:

[0113] Large multi-functional halls, convention centers, and loft office spaces need to have their layouts changed according to the usage scenario (e.g., changing from a "single-level meeting mode" to a "tiered audience seating mode," or adding a "double-level mezzanine" to a "single-level office"). For example, a company's multi-functional hall, which is normally a level meeting space, needs to have three rows of tiered audience seating built when hosting small performances. The supporting structure of the tiers needs to be fixed to the existing beam and column frame.

[0114] 2. Adjusting demand:

[0115] Installation position (height) adjustment: The step support needs to be "raised step by step" (e.g., the first row of steps is 0.3m high, the second row is 0.6m high, and the third row is 0.9m high). "Staggered steel structure beams 2" need to be installed on the original columns as the load-bearing foundation of the steps. Therefore, the installation height of the steel structure beams 2 needs to be precisely matched with the height of the steps.

[0116] Inclination angle adjustment: The "step surface" of the steps must be kept horizontal, but the steel structure beam 2 supporting the steps must be consistent with the slope of the steps (such as 30° inclination) in order to keep the step surface horizontal and fixed, and prevent the audience from slipping when standing.

[0117] 3. Applications of the present invention:

[0118] Utilizing the "re-adjustment function" of this invention: There is no need to dismantle the original beams and columns; only the limiting fixation between the U-shaped rod 31 and the steel structure beam 2 needs to be released. Then, the steel structure beam 2 is suspended by a crane to maintain its stability, and the support crossbars 32 at both ends of the steel structure beam 2 are rotated to disengage them from the sleeve 314. Finally, the installation position of the steel structure beam 2 is finely adjusted by the crane (rotating the steel structure beam 2 to a 30° tilt angle, and after relocking, it can be used as a step support). Compared with traditional "demolition, alteration, and reconstruction," this saves more than 80% of adjustment time and cost.

[0119] IV. Renovation of old buildings: Utilize existing structures to reduce demolition and construction costs.

[0120] 1. Scene Description:

[0121] When converting old factories and warehouses into cultural and creative parks or loft apartments, it is necessary to retain the original concrete columns (to save on reconstruction costs). However, the beam connection points of the original columns are "horizontally fixed at a height," which cannot adapt to the new spatial requirements. For example, a textile factory from the 1990s was converted into a cultural and creative park. The original column spacing was 6m, and the beam connection point height was 3m (to fit the original production line). Now, it is necessary to add a "double-layer office mezzanine" between the columns (the lower office is 2.8m high, and the upper office is 2.5m high), which requires adjusting the height and tilt angle of the beams.

[0122] 2. Adjusting demand:

[0123] Installation position (height) adjustment: The beam of the lower mezzanine needs to be installed at a height of 1.2m above the column, and the beam of the upper mezzanine needs to be installed at a height of 4.0m above the column (the original factory building only has embedded pipes at a height of 3m, and it is necessary to add embedded pipes at different heights, but the present invention can adapt to the modification requirements in advance by setting horizontal embedded pipes 15 at multiple different heights of the precast concrete column 1).

[0124] Inclination angle adjustment: The upper mezzanine needs to be set with a 2% inclination angle for laying cable trays (laying cables along the inclined direction to avoid cable accumulation). Therefore, the upper steel beam needs to be adjusted with a 2% inclination angle to not affect the horizontal use of the mezzanine floor.

[0125] 3. Applications of the present invention:

[0126] If, before the renovation, the precast concrete columns 1 of this invention are used (with horizontal embedded pipes 15 set at different heights such as 1.2m, 3.0m, and 4.0m), during the renovation, it is only necessary to connect the lower beam to the horizontal embedded pipe 15 at a height of 1.2m and the upper beam to the horizontal embedded pipe 15 at a height of 4.0m. Then, the upper beam is rotated at a preset tilt angle through the longitudinal shaft 35, and a double-layer mezzanine can be quickly built. Compared with the traditional "demolishing the original columns and re-casting", it saves more than 60% of the renovation cost and avoids damage to the main structure of the building.

[0127] The aforementioned scenarios all break through the limitations of traditional "horizontal fixed beams" due to the "non-standardized requirements of architectural shape, terrain, and function." This invention, through its design of "multi-height horizontal pre-embedded pipes for position adjustment, longitudinal axis rods for angle adjustment, scale line control precision, and unlockable readjustment," perfectly adapts to these scenarios, ensuring structural safety while enhancing the flexibility and ease of architectural design and modification.

[0128] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A prefabricated beam-column connection structure, comprising precast concrete columns (1) and steel beams (2), wherein the steel beams (2) are connected between two precast concrete columns (1) arranged opposite to each other via beam end connection components, characterized in that, At least two horizontal embedded pipes (15) are pre-installed at different heights on the outer wall of the precast concrete column (1); the beam end connection components at both ends of the steel structure beam (2) include at least two U-shaped suspension devices (3), and the U-shaped suspension devices (3) located at the same end of the steel structure beam (2) are installed at the same height. Each U-shaped suspension device (3) includes a U-shaped rod (31) and two supporting crossbars (32). The U-shaped rod (31) is composed of a straight rod one (311), an arc rod (312) and a straight rod two (313) connected in series. The ends of the straight rod one (311) and the straight rod two (313) are fixedly provided with sleeve one (314). The first ends of the two supporting crossbars (32) are threaded to the sleeve one (314) respectively, and the second ends of the two supporting crossbars (32) are threaded to the horizontal pre-embedded pipes (15) located in the same vertical plane and at different heights respectively. A rotating arm (36) is fixedly connected to both ends of the steel structure beam (2). A longitudinal shaft (35) is set at the center point of the arc-shaped rod (312) on the U-shaped rod (31). The axis of the longitudinal shaft (35) is set horizontally along the width direction of the steel structure beam (2). The end of the rotating arm (36) away from the steel structure beam (2) is rotatably connected to the shaft limiting assembly inside the U-shaped rod (31) so that the rotating arm (36) can rotate around the axis of the longitudinal shaft (35) relative to the U-shaped rod (31). When rotated, the steel structure beam (2) is provided with a crossbeam through hole (24), and the arc-shaped rod (312) of the U-shaped rod (31) passes through the crossbeam through hole (24). The two ends of the steel structure beam (2) are connected to the U-shaped rod (31) respectively through the arc-shaped rod limiting assembly (4). The arc-shaped rod limiting assembly (4) has a first state that limits and fixes the U-shaped rod (31) and the steel structure beam (2), and a second state that releases the U-shaped rod (31) and the steel structure beam (2) from the limiting and fixing.

2. The prefabricated beam-column connection structure according to claim 1, characterized in that, At least one precast concrete column (1) has multiple sets of horizontal embedded pipes (15) at different heights on its outer wall so that the U-shaped suspension device (3) can be installed at different heights.

3. The prefabricated beam-column connection structure according to claim 1, characterized in that, The precast concrete column (1) is provided with supporting vertical steel bars (11), front irregular H-beams (12), rear irregular H-beams (13) and transverse connecting bars (14). The supporting vertical steel bars (11) are provided in several units and are fixed by tying with stirrups. The front irregular H-beams (12) and rear irregular H-beams (13) are both composed of vertical wide plates (121), vertical short plates (122) and vertical connecting plates (123). The vertical wide plates (121) and vertical short plates (122) are arranged parallel to each other and their lengths are equal. The same but different widths, the upright connecting plate (123) is set between the upright wide plate (121) and the upright short plate (122) and its two ends are respectively fixed at the center line of the end face of the upright wide plate (121) and the upright short plate (122); the front irregular I-beam (12) and the rear irregular I-beam (13) are symmetrically set at the front and rear end faces of the precast concrete column (1), and the upright wide plate (121) is attached to the outer wall of the precast concrete column (1), and the upright short plate (122) is placed inside the precast concrete column (1); Four transverse embedded pipes (15) are installed on the outer wall of the front face of the precast concrete column (1) at the same height. The first end of the transverse embedded pipe (15) passes through the vertical wide plate (121) of the front irregular I-beam (12) and is welded and fixed. The second end is embedded in the interior of the precast concrete column (1). The transverse embedded pipes (15) are symmetrically arranged on both sides of the vertical connecting plate (123). The first end of the transverse connecting bar (14) corresponds to the second end of the transverse embedded pipe (15) and is welded and fixed in series. The two transverse connecting bars on the outside are... The second end of (14) is welded and fixed to the vertical wide plate (121) of the rear irregular I-beam (13). The second ends of the two transverse connecting bars (14) located on the inner side are both inserted through the vertical short plate (122) of the rear irregular I-beam (13) and welded and fixed. The second ends of the two transverse embedded pipes (15) located on the inner side are both inserted through the vertical short plate (122) of the front irregular I-beam (12) and welded and fixed. The transverse connecting bars (14) and the transverse embedded pipes (15) are both welded or tied and fixed to at least one supporting vertical steel bar (11).

4. The prefabricated beam-column connection structure according to claim 1, characterized in that, The longitudinal shaft (35) is fixed relative to the U-shaped rod (31), and the rotating arm (36) is provided with a rotating fitting hole that matches the longitudinal shaft (35). Both sides of the rotating arm (36) are provided with annular washers (37) and locking nuts (38). The locking nuts (38) are screwed into the longitudinal shaft (35) through threaded engagement. Under the push of the locking nuts (38), the annular washers (37) can be partially engaged in the gap between the rotating arm (36) and the longitudinal shaft (35) to achieve the limiting and fixing of the rotating arm (36).

5. The prefabricated beam-column connection structure according to claim 4, characterized in that, The shaft limiting assembly includes a vertical hanger (33) and a vertical support rod (34). The upper end of the vertical hanger (33) is welded and fixed to the connection between the straight rod (311) and the arc-shaped rod (312). The longitudinal shaft (35) passes through the longitudinal mounting hole provided at the lower end of the vertical hanger (33). The vertical support rod (34) includes a rotating support rod (341) and a vertical fixing rod (342). The upper end of the rotating support rod (341) is rotatably connected to the longitudinal shaft (35) through a U-shaped support (344), and both sides of the U-shaped support (344) are fitted with the longitudinal shaft (35). The rotating support rod (341) is fixed by a nut and a threaded connection. The lower end of the vertical support rod (33) is correspondingly set inside the U-shaped support (344). The upper end of the vertical fixing rod (342) is welded with a sleeve (343). The lower end of the rotating support rod (341) is screwed into the sleeve (343) for connection and fixation by a threaded connection. The lower end of the vertical fixing rod (342) passes through the fixed rod mounting hole at the connection between the arc-shaped rod (312) and the straight rod (313), and is fixed by two nuts with a threaded connection.

6. The prefabricated beam-column connection structure according to any one of claims 1 to 5, characterized in that, The steel structure beam (2) is formed by vertical plate (23) and two horizontal plates to form an I-shaped structure. There are two rotating arms (36). The ends of the rotating arms (36) connected to the steel structure beam (2) are respectively placed on both sides of the vertical plate (23) of the steel structure beam (2) and are closely fitted with the upper and lower horizontal plates of the steel structure beam (2). The rotating arms (36) are fixed together with the vertical plate (23) of the steel structure beam (2) by bolts. Two horizontal beam through holes (24) are respectively provided at both ends of the horizontal plate of the steel structure beam (2) in the area on both sides of the vertical plate (23). The beam end connection components at both ends of the steel structure beam (2) include four U-shaped rods (31).

7. The prefabricated beam-column connection structure according to claim 6, characterized in that, The vertical plate (23) of the steel structure beam (2) is provided with a center standard line (27) on both sides of the end face, and the arc rod (312) of the U-shaped rod (31) is provided with an inclination angle scale line (315). The center standard line (27) and the inclination angle scale line (315) are matched to display the installation inclination angle value of the steel structure beam (2).

8. The prefabricated beam-column connection structure according to claim 6, characterized in that, The arc-shaped rod limiting components (4) at both ends of the steel structure beam (2) each include two sets of limiting blocks and locking steel strips (43). Each set of limiting blocks consists of a left limiting block (41) and a right limiting block (42). The two sets of limiting blocks are placed on both sides of the vertical plate (23) of the steel structure beam (2) and are locked and engaged with the arc-shaped rods (312) of the two U-shaped rods (31). The vertical plate (23) of the steel structure beam (2) is provided with steel strip through holes (26). The locking steel strips (43) pass through the steel strip through holes (26) and are connected end to end to form a loop to bind the two sets of limiting blocks to the outside of the two sets of limiting blocks. The connection of the locking steel strips (43) is adjusted by the locking structure component (5) so that the locking steel strips (43) can lock and fix the two sets of limiting blocks to the steel structure beam (2) and the four arc-shaped rods (312) as a whole. The front end of each limiting block is connected to the steel structure beam (2). The planar structure of the vertical plate (23) of the beam (2) is attached to the side end face. The upper and lower end faces of each limiting block are planar structures that are attached to the upper and lower horizontal plates of the steel beam (2). The outer end face and rear end face of each limiting block are connected to form a smooth arc or elliptical arc. The connecting end face of the left limiting block (41) and the connecting end face of the right limiting block (42) are arranged opposite to each other. The connecting end face of the left limiting block (41) is provided with a left half-arc rod groove (411), and the connecting end face of the right limiting block (42) is provided with a right half-arc rod groove (421). The arc rod (312) of the U-shaped rod (31) is provided with several annular limiting protrusions evenly spaced along its length direction. The left half-arc rod groove (411) and the right half-arc rod groove (421) are in corresponding positions, and the groove formed by the combination is adapted to the shape of the arc rod (312).

9. The prefabricated beam-column connection structure according to claim 8, characterized in that, The locking structure assembly (5) includes a gear housing (51), an adjusting gear (52), and an anti-slip tooth device (53). The two ends of the locking steel strip (43) at its head and tail connection are respectively set as the locking steel strip A end and the locking steel strip B end. The gear housing (51) is fixedly installed on the locking steel strip A end. The adjusting gear (52) is rotatably installed in the gear housing (51). A steel strip through hole is provided on the gear housing (51) on one side of the circumferential direction of the adjusting gear (52). The locking steel strip B end passes through the steel strip through hole of the gear housing (51), and interference teeth (431) are provided on the outer wall of the locking steel strip B end. The gear housing (51) is provided with a gear adjustment hole (511) on one side of the gear housing (51), and a rotating adjustment column (521) is installed on the wheel surface of the adjusting gear (52) on one side. The outer end of the rotating adjustment column (521) passes through the gear adjustment hole (511). The rotating adjustment column (521) can make the adjusting gear (52) rotate and drive the tension adjustment of the locking steel belt (43). The anti-slip tooth device (53) is provided on the side of the connection between the locking steel belt (43) and the adjusting gear (52) near the outer end face of the B end of the locking steel belt. The anti-slip tooth device (53) consists of two equal teeth. The gear housing (51) consists of two equilateral triangular plates (531) and three steel columns (532). The three steel columns (532) are placed between two equilateral triangular plates (531) and are rotatably connected to the three corner areas of the equilateral triangular plates (531) via rotating shafts. Two adjusting pins (533) are fixedly installed on each of the two equilateral triangular plates (531). Slot holes (512) are provided on both end faces of the gear housing (51). The length direction of the slot holes (512) is parallel to the axial direction of the steel strip passing through the hole. The adjusting pins (533) on the two equilateral triangular plates (531) are respectively inserted and engaged in the gear housing. In the strip-shaped holes (512) on both ends of the body (51); the adjusting pin (533) can move back and forth along the length direction of the strip-shaped hole (512). When the adjusting pin (533) moves to the end of the strip-shaped hole (512) close to the adjusting gear (52), the steel column (532) in the anti-slip tooth device (53) can simultaneously engage with the tooth groove on the adjusting gear (52) and the tooth groove on the locking steel strip (43). When the adjusting pin (533) moves to the end of the strip-shaped hole (512) away from the adjusting gear (52), the anti-slip tooth device (53) is in a separated state relative to the adjusting gear (52).

10. An installation method for prefabricated beam-column connection structures, characterized in that, The prefabricated beam-column connection structure according to any one of claims 1 to 9 is implemented, and includes the following steps: Step S1, Installation of precast concrete column (1): According to the drawings, the precast concrete columns (1) are made in the factory and then transported to the planned location at the installation site and vertically fixed on the concrete ground with bolts. Step S2, Assembly of the U-shaped suspension device (3) and the steel structure beam (2): After the steel structure beam (2) is placed horizontally, U-shaped suspension devices (3) are installed at both ends of the steel structure beam (2), so that the swing arm (36) can rotate around the axis of the longitudinal shaft (35) relative to the U-shaped rod (31); the U-shaped suspension device (3) has a reserved support crossbar (32) that is not connected. Step S3, hoisting of steel structure beam (2): Step S31: Screw the multiple support crossbars (32) corresponding to the first end of the steel structure beam (2) into the horizontal embedded pipes (15) of the corresponding precast concrete column (1); In step S32, the steel structure beam (2) is lifted by a crane so that the multiple sleeves (314) at its first end correspond one-to-one with the multiple support crossbars (32) installed in step S31. Then, the support crossbars (32) are rotated in the opposite direction so that the support crossbars (32) are gradually screwed into the sleeves (314) for fixation, thereby realizing the fixed installation of the U-shaped suspension device (3) at the first end of the steel structure beam (2). Step S33: The steel beam (2) is rotated around the longitudinal axis (35) at its first end by a crane; Step S34: After the steel structure beam (2) is adjusted to the preset tilt angle, the multiple support crossbars (32) corresponding to the second end of the steel structure beam (2) are screwed into the horizontal embedded pipe (15) of the corresponding precast concrete column (1). In step S35, the multiple sleeves (314) at the second end of the steel structure beam (2) are matched one-to-one with the multiple support crossbars (32) installed in step S34. Then, the support crossbars (32) are rotated in the opposite direction so that the support crossbars (32) are gradually screwed into the sleeves (314) for fixation, thereby realizing the fixed installation of the U-shaped suspension device (3) at the second end of the steel structure beam (2). Step S4, fixing and locking the steel structure beam (2): The U-shaped rod (31) and the steel structure beam (2) are fixed by the arc-shaped rod limiting component (4).

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