A beam-column quick installation structure and construction method for assembled building

Abstract

The present invention provides a structure and construction method for the rapid installation of beams and columns of an assembled building, including a prefabricated lower column, a prefabricated upper column, a prefabricated beam and a structural connector, wherein the prefabricated lower column is connected to the prefabricated upper column and the prefabricated beam through the structural connector; a plurality of vertical bars or embedded anchor bolts in the prefabricated lower column and the prefabricated upper column extend out of the ends reserved in the column body; a connecting steel is embedded in the end of the prefabricated beam, and the connecting steel is trapezoidal; at least two inverted trapezoidal grooves are fixed around the central square steel in the structural connector, and the ends of the connecting steel are fixed against the grooves, and the top plate and the base plate are respectively fixed on the vertical bars or embedded anchor bolts on the prefabricated upper column and the prefabricated lower column. The prefabricated concrete beams and columns disclosed in the present invention can be directly hoisted into the grooves of the structural components by a machine due to the special structure of the prefabricated concrete beams, and a large amount of scaffolding and manual support are not required during assembly, thereby increasing the safety of life and property; at the same time, the difficulty of adjusting the level is solved while maintaining the advantage of good energy consumption capacity.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated buildings, and in particular to a beam-column quick installation structure and a construction method for prefabricated buildings. Background Art

[0002] At present, the installation of prefabricated beams in commonly used prefabricated concrete frame structures requires the simultaneous efforts of humans and machines to complete the installation.

[0003] When installing the second-floor columns into the existing prefabricated concrete frame structure, the verticality of the second-floor columns needs to be fine-tuned, and the adjustment needs to be completed starting from the first floor.

[0004] Prefabricated concrete structures generally use post-cast concrete and require a large number of scaffolding on site for support and formwork. This system has a long construction period. Summary of the invention

[0005] The main purpose of the present invention is to provide a quick installation structure and construction method for beams and columns of prefabricated buildings to solve the problems in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: comprising a prefabricated lower column, a prefabricated upper column, a prefabricated beam and a structural connector, wherein the prefabricated lower column is connected to the prefabricated upper column and the prefabricated beam through the structural connector;

[0007] Multiple vertical bars or embedded anchor bolts in the prefabricated lower column and the prefabricated upper column extend out of the ends reserved in the column;

[0008] The end of the precast beam is pre-buried with connecting steel, which is trapezoidal in shape;

[0009] At least two inverted trapezoidal grooves are fixed on the peripheral sides of the central square steel in the structural connecting piece, and the ends of the connecting steel are fixed in the grooves. A top seat plate is fixed on the top of the central square steel, and a base plate is fixed on the bottom. The top seat plate and the base plate are respectively fixed on the vertical bars or embedded anchor bolts on the prefabricated upper column and the prefabricated lower column.

[0010] Preferably, the connecting steel includes a bottom plate, a side plate and a top plate, the bottom plate is connected to the top plate via the side plates, and connecting plates are fixedly provided on both sides of one end of the connecting steel embedded in the prefabricated beam, and the connecting plates are fixedly connected to the transverse reinforcement in the prefabricated beam.

[0011] Preferably, a plurality of bolts are provided on the side panels, the connecting plates are fixed to the top and bottom of the side panels, and a rib plate is fixed between the connecting plate at the bottom and the outer side of the side panels;

[0012] There are spacing holes between the top plate and the connecting plate, and the spacing holes are used for installing bolts and pouring concrete.

[0013] Preferably, the inverted trapezoidal slot on the central square steel is two inclined plates, which are fixed on the central square steel in an inverted trapezoidal shape, the lower ends of the two inclined plates are fixed on the base plate with shrinkage, and the upper ends of the two inclined plates are fixed on the top seat plate with openings.

[0014] Preferably, the top seat plate connects two adjacent inverted trapezoidal slots, and the top seat plate is fixed to the upper end of the inclined plate and the central square steel;

[0015] A reinforced partition is fixed between two adjacent inverted trapezoidal slots, and the end of the reinforced partition is fixed on the outer side of the inclined plate.

[0016] Preferably, the side plates in the connecting steel are fixed to the inclined plates in the structural connecting member by bolts;

[0017] The bottom plate in the connecting steel is fixed to the base plate in the structural connecting member by bolts, and the bolts abut against the slots in the bottom plate;

[0018] The top plate in the connecting steel is fixed to the vertical reinforcement or embedded anchor bolts on the prefabricated upper column by nuts.

[0019] Preferably, the central square steel is hollow inside, and a through groove corresponding to the inverted trapezoidal slot is provided on the circumference of the central square steel, and the through groove is provided between two inclined plates of the inverted trapezoidal slot;

[0020] A key slot is arranged in the middle of the prefabricated lower column and the prefabricated upper column, and the key slot is communicated with the through slot.

[0021] Preferably, the vertical reinforcement or the embedded anchor bolt is provided with a threaded adjustment nut, which abuts against the base plate and the top plate to adjust the level.

[0022] Preferably, the beam-column node connection structure types include two precast beams for an "L"-shaped column, three precast beams for a "T"-shaped column, and four precast beams for a "X"-shaped column. According to the orientation of the precast beams, corresponding inverted trapezoidal slots are set on the central square steel.

[0023] A construction method for a beam-column quick installation structure of an assembled building, the method steps are as follows:

[0024] S1. Manufacturing and processing the prefabricated lower columns and prefabricated lower columns, preserving the vertical reinforcement protruding from the ends of the prefabricated lower columns and prefabricated lower columns, tapping the protruding parts of the vertical reinforcement, and using a plug to make a keyway during casting;

[0025] S2. Manufacturing and processing precast beams, pre-embedding connecting steel at the ends of the precast beams, welding and fixing the connecting steel to the steel bars in the precast beams, pouring concrete to form an integrated structure, the top plate, side plates and bottom plates of the connecting steel protrude from the ends of the precast beams, pouring the connecting plates and studs in the precast beams, and welding the steel bars in the precast beams to the connecting plates;

[0026] S3, manufacture and process structural connectors, and place the prefabricated beams, prefabricated lower columns and prefabricated upper columns into molds and pour concrete, and complete the curing before leaving the factory;

[0027] S4. During on-site construction, the reserved vertical reinforcement in the upper section of the prefabricated lower column is hoisted into the structural connector, and the level of the structural connector is adjusted with the adjusting nut, and the structural connector is locked with the nut;

[0028] S5, hanging the precast beam to the inner side of the inclined plate of the trapezoidal slot of the structural connector, and after the structure is stable, fixing the end of the precast beam to the structural connector;

[0029] S6. The reserved vertical reinforcement at the lower end of the prefabricated upper column is inserted into the top base plate of the structural connector. The structural connector is adjusted vertically with the adjusting nut and locked with the nut;

[0030] S7. Set up the formwork, and let the concrete flow into the structural connector through the interval holes and into the center square steel and keyway through the through groove to form a whole.

[0031] The present invention provides a quick installation structure and construction method of beams and columns of an assembled building, with the following beneficial effects:

[0032] 1. No need for a large number of scaffolding and inclined supports during assembly, which increases the safety of life and property;

[0033] 2. It solves the contradiction that the direct connection between the beams and columns of the frame structure requires that the column section cannot be too small, while the building function requires that the column section cannot be too large;

[0034] 3. Easy to assemble. During installation, the bolts at the ends of the beams are directly fixed on the structural parts, which solves the difficulty of adjusting the level and ensures the advantage of good energy consumption capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0036] Figure 1 It is an axial side view of the overall structure of the present invention;

[0037] Figure 2 It is a front view of the overall structure of the present invention;

[0038] Figure 3 The present invention Figure 1 Exploded view of;

[0039] Figure 4 is a side view of the connecting steel shaft of the present invention;

[0040] Figure 5 It is another axial side view of the connecting steel of the present invention;

[0041] Figure 6 It is an axial side view of the structural connecting member of the present invention;

[0042] Figure 7 It is a schematic diagram of the end structure of the column of the present invention;

[0043] In the figure: prefabricated lower column 1; prefabricated upper column 2; prefabricated beam 3; transverse reinforcement 301; stirrups 302; connecting steel 4; side plate 401; bottom plate 402; top plate 403; connecting plate 404; studs 405; spacing holes 406; rib plate 407; slots 408; structural connector 5; central square steel 501; base plate 502; inclined plate 503; top seat plate 504; through groove 505; reinforced partition 506; embedded anchor bolts 6; adjusting nuts 7; keyway 8. DETAILED DESCRIPTION

[0044] Example 1

[0045] like Figures 1 to 7 As shown, a quick installation structure of beams and columns of an assembled building comprises a prefabricated lower column 1, a prefabricated upper column 2, a prefabricated beam 3 and a structural connector 5, wherein the prefabricated lower column 1 is connected to the prefabricated upper column 2 and the prefabricated beam 3 through the structural connector 5;

[0046] A plurality of vertical bars or embedded anchor bolts 6 in the prefabricated lower column 1 and the prefabricated upper column 2 extend out of the ends of the columns reserved;

[0047] A connecting steel 4 is embedded in the end of the prefabricated beam 3, and the connecting steel 4 is trapezoidal;

[0048] At least two inverted trapezoidal slots are fixedly provided on the periphery of the central square steel 501 in the structural connector 5, and the ends of the connecting steel 4 are fixed against the slots. A top seat plate 504 is fixedly provided on the top of the central square steel 501, and a base plate 502 is fixedly provided on the bottom. The top seat plate 504 and the base plate 502 are respectively fixed on the vertical bars or embedded anchor bolts 6 on the prefabricated upper column 2 and the prefabricated lower column 1. According to this structure, screw rods are reserved at the ends of the prefabricated lower column 1 and the prefabricated upper column 2. The reserved screw rods are reserved for the protruding vertical bars in the column, and can also be embedded anchor bolts 6. The structural connector 5 can be leveled and locked by nuts on the reserved screw rods. The prefabricated beam 3 is fixed against the inverted trapezoidal slots by the connecting steel 4, and the installation is convenient. The reserved screw rods on the prefabricated upper column 2 are leveled and locked on the structural connector 5 by nuts, and the construction operation is simple and convenient.

[0049] Preferably, the connection steel 4 includes a bottom plate 402, a side plate 401 and a top plate 403, the bottom plate 402 is connected to the top plate 403 at both sides through the side plates 401, and the connection steel 4 is embedded in the precast beam 3. The two sides of the end are fixed with connection plates 404, and the connection plates 404 are fixedly connected to the transverse reinforcement 301 in the precast beam 3. According to this structure, the bottom plate 402, the side plate 401 and the top plate 403 in the connection steel 4 partially protrude from the precast beam 3, and are partially cast in the precast beam 3, wherein the connection plate 404 is welded and fixed to the transverse reinforcement 301 in the precast beam 3 to ensure the connection strength.

[0050] Preferably, a plurality of bolts 405 are provided on the side plate 401, a connecting plate 404 is fixed to the top and bottom of the side plate 401, and a rib plate 407 is fixed between the connecting plate 404 at the bottom and the outer side of the side plate 401;

[0051] There are spaced holes 406 between the top plate 403 and the connecting plate 404, and the spaced holes 406 are used to install bolts and pour concrete. With this structure, the bolts 405 are poured into the prefabricated beam 3 to increase the pouring connection strength.

[0052] Preferably, the inverted trapezoidal slots on the central square steel 501 are two inclined plates 503, which are fixed on the central square steel 501 in an inverted trapezoidal shape, and the lower ends of the two inclined plates 503 are fixed on the base plate 502 with a shrinkage, and the upper ends of the two inclined plates 503 are fixed on the top base plate 504 with an open end. With this structure, the precast beam 3 is hoisted from top to bottom, and the connecting steel 4 enters from the upper open ends of the two inclined plates 503, so that the side plates 401 of the connecting steel 4 are against the inclined plates 503, and the inclined surfaces cooperate to automatically position and lock, and the side plates 401 and the inclined plates 503 are locked by bolts.

[0053] Preferably, the top seat plate 504 connects two adjacent inverted trapezoidal slots, and the top seat plate 504 is fixed to the upper end of the inclined plate 503 and the central square steel 501;

[0054] A reinforced partition plate 506 is fixed between two adjacent inverted trapezoidal slots, and the end of the reinforced partition plate 506 is fixed to the outer side of the inclined plate 503. With this structure, the top seat plate 504 is used to be locked and fixed with the reserved screw rod on the prefabricated upper column 2.

[0055] Preferably, the side plate 401 in the connecting steel 4 is fixed to the inclined plate 503 in the structural connecting member 5 by bolts;

[0056] The bottom plate 402 in the connecting steel 4 is fixed to the base plate 502 in the structural connecting member 5 by bolts, and the bolts abut against the slots 408 on the bottom plate 402;

[0057] The top plate 403 in the connecting steel 4 is fixed to the vertical reinforcement or embedded anchor bolt 6 on the prefabricated upper column 2 by nuts. With this structure, the structural connector 5, the connecting steel 4 and the reserved screw rod on the column are locked and fixed by bolts to form a whole.

[0058] Preferably, the center square steel 501 is hollow inside, and a through groove 505 corresponding to the inverted trapezoidal slot is provided on the periphery of the center square steel 501, and the through groove 505 is provided between the two inclined plates 503 of the inverted trapezoidal slot;

[0059] A keyway 8 is provided in the middle of the prefabricated lower column 1 and the prefabricated upper column 2, and the keyway 8 is communicated with the through groove 505. With this structure, the through groove 505 is used for grouting, and the poured concrete enters the central square steel 501 and the keyway 8 through the through groove 505.

[0060] Preferably, a threaded adjustment nut 7 is provided on the vertical reinforcement or embedded anchor bolt 6, and the adjustment nut 7 rests on the base plate 502 and the top plate 504 for adjusting the level.

[0061] Preferably, the beam-column node connection structure type includes two precast beams for an "L"-shaped column, three precast beams for a "T"-shaped column, and four precast beams for a "X"-shaped column. According to the orientation of the precast beams, corresponding inverted trapezoidal slots are set on the central square steel 501.

[0062] Example 2

[0063] like Figures 1 to 7 As shown, in combination with Example 1, a construction method for a quick installation structure of beams and columns of an assembled building is further described, and the method steps are as follows:

[0064] S1. Make and process the prefabricated lower column 1 and the prefabricated lower column 2, reserve the vertical reinforcement protruding from the ends of the prefabricated lower column 1 and the prefabricated lower column 2, tap the protruding part of the vertical reinforcement, and use a plug to make a key groove 8 during casting; in this example, the reserved part of the protruding vertical reinforcement in the prefabricated lower column 1 and the prefabricated lower column 2 is tapped, used as a screw rod to connect the adjusting nut 7 and fixedly connected to the structural connector 5 through the nut.

[0065] S2. Make and process the precast beam 3, embed the connecting steel 4 at the end of the precast beam 3, weld the connecting steel 4 to the steel bars in the precast beam 3, and cast concrete to form it as a whole. The top plate 403, the side plate 401 and the bottom plate 402 of the connecting steel 4 protrude from the end of the precast beam 3, the connecting plate 404 and the studs 405 are cast in the precast beam 3, and the steel bars in the precast beam 3 are welded to the connecting plate 404; after the steel bars of the precast beam 3 are tied, install the connecting steel 4 at the end of the steel bars, weld the steel bars to the connecting plate 404 of the connecting steel 4, and cast the connecting plate 404 and the studs 405 of the connecting steel 4 in the precast beam 3 to ensure the connection strength between the precast beam 3 and the connecting steel 4.

[0066] S3, manufacture and process the structural connector 5, and place the precast beam 3, precast lower column 1 and precast upper column 2 into the mold respectively, pour concrete, and complete the curing before leaving the factory; according to the type of beam-column node connection structure, the inverted trapezoidal slot on the structural connector 5 is processed accordingly, and the steel cages of the precast beam 3, precast lower column 1 and precast upper column 2 tied according to size are placed into the corresponding mold, and concrete is poured and cured.

[0067] S4, on-site construction, the upper part of the prefabricated lower column 1 is reserved for vertical reinforcement, which is hoisted into the structural connector 5, and the structural connector 5 is adjusted to be level with the adjusting nut 7, and the structural connector 5 is locked with the nut;

[0068] S5, hang the precast beam 3 to the inner side of the inclined plate 503 of the trapezoidal slot of the structural connector 5, and after the structure is stable, fix the end of the precast beam 3 to the connecting steel 4 and the structural connector 5;

[0069] S6, the vertical reinforcement 6 reserved at the lower end of the prefabricated upper column 2 is inserted into the top base plate 504 of the structural connector 5, and the structural connector 5 is adjusted vertically with the adjusting nut 7, and is locked and fixed with the nut;

[0070] S7, erecting the formwork, allowing the concrete to flow into the structural connector 5 through the spacing holes 406 and into the central square steel 501 and the keyway 8 through the through slot 505 to form a whole.

[0071] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A quick installation structure for beams and columns of prefabricated buildings, characterized by: It comprises a prefabricated lower column (1), a prefabricated upper column (2), a prefabricated beam (3), and a structural connecting piece (5), wherein the prefabricated lower column (1) is connected to the prefabricated upper column (2) and the prefabricated beam (3) via the structural connecting piece (5); A plurality of vertical bars or embedded anchor bolts (6) in the prefabricated lower column (1) and the prefabricated upper column (2) extend out of the ends of the columns reserved therein; A connection steel (4) is pre-buried at the end of the prefabricated beam (3), and the connection steel (4) is trapezoidal; At least two inverted trapezoidal grooves are fixedly provided on the peripheral side of the central square steel (501) in the structural connecting member (5), and the ends of the connecting steel (4) are fixed against the grooves. A top seat plate (504) is fixedly provided on the top of the central square steel (501), and a base plate (502) is fixedly provided on the bottom. The top seat plate (504) and the base plate (502) are respectively fixed on the vertical bars or embedded anchor bolts (6) on the prefabricated upper column (2) and the prefabricated lower column (1); The connecting steel (4) comprises a bottom plate (402), a side plate (401) and a top plate (403); both sides of the bottom plate (402) are connected to the top plate (403) via the side plates (401); connecting plates (404) are fixedly provided on both sides of one end of the connecting steel (4) embedded in the precast beam (3); and the connecting plates (404) are fixedly connected to the transverse reinforcement (301) in the precast beam (3); A plurality of bolts (405) are provided on the side plate (401), a connecting plate (404) is fixed to the top and bottom of the side plate (401), and a rib plate (407) is fixed between the connecting plate (404) at the bottom and the outer side of the side plate (401); A spacing hole (406) is provided between the top plate (403) and the connecting plate (404), and the spacing hole (406) is used for installing bolts and pouring concrete; The inverted trapezoidal slots on the central square steel (501) are two inclined plates (503), which are fixed to the central square steel (501) in an inverted trapezoidal shape, the lower ends of the two inclined plates (503) are shrunken and fixed to the base plate (502), and the upper ends of the two inclined plates (503) are open and fixed to the top base plate (504); The top seat plate (504) connects two adjacent inverted trapezoidal slots, and the top seat plate (504) is fixed on the upper end of the inclined plate (503) and the central square steel (501); A reinforced partition plate (506) is fixedly provided between two adjacent inverted trapezoidal slots, and an end of the reinforced partition plate (506) is fixed to the outer side of the inclined plate (503); The central square steel (501) is hollow inside, and a through groove (505) corresponding to the inverted trapezoidal slot is provided on the circumference of the central square steel (501), and the through groove (505) is provided between two inclined plates (503) of the inverted trapezoidal slot; A keyway (8) is provided in the middle of the prefabricated lower column (1) and the prefabricated upper column (2), and the keyway (8) is communicated with the through groove (505); A threaded adjustment nut (7) is provided on the vertical reinforcement or the embedded anchor bolt (6), and the adjustment nut (7) abuts against the base plate (502) and the top base plate (504) for adjusting the level.

2. According to the quick installation structure of beams and columns of prefabricated buildings as described in claim 1, it is characterized by: The side plate (401) in the connecting steel (4) is fixed to the inclined plate (503) in the structural connecting member (5) by bolts; The bottom plate (402) in the connecting steel (4) is fixed to the base plate (502) in the structural connecting member (5) by means of bolts, and the bolts are abutted against the slots (408) on the bottom plate (402); The top plate (403) in the connecting steel (4) is fixed to the vertical reinforcement or the embedded anchor bolt (6) on the prefabricated upper column (2) by means of nuts.

3. According to the quick installation structure of beams and columns of prefabricated buildings as described in claim 1, it is characterized by: The beam-column node connection structure types include two precast beams for "L"-shaped columns, three precast beams for "T"-shaped columns, and four precast beams for "X"-shaped columns. According to the orientation of the precast beams, corresponding inverted trapezoidal slots are set on the central square steel (501).

4. A construction method for a beam-column quick installation structure of an assembled building according to any one of claims 1 to 3, wherein the method steps are as follows: S1, manufacturing and processing a prefabricated lower column (1) and a prefabricated upper column (2), leaving vertical reinforcement protruding from the ends of the prefabricated lower column (1) and the prefabricated upper column (2), tapping the protruding parts of the vertical reinforcement, and using a plug to make a keyway (8) during casting; S2, manufacturing and processing a prefabricated beam (3), pre-embedding a connecting steel (4) at the end of the prefabricated beam (3), welding the connecting steel (4) to the steel bars inside the prefabricated beam (3), pouring concrete to form an integral body, the top plate (403), the side plate (401) and the bottom plate (402) of the connecting steel (4) protrude from the end of the prefabricated beam (3), the connecting plate (404) and the studs (405) are poured inside the prefabricated beam (3), and the steel bars inside the prefabricated beam (3) are welded to the connecting plate (404); S3, manufacturing and processing the structural connector (5), and placing the prefabricated beam (3), the prefabricated lower column (1) and the prefabricated upper column (2) into a mold, pouring concrete, and completing the curing before leaving the factory; S4, on-site construction, the reserved vertical reinforcement of the upper section of the prefabricated lower column (1) is hoisted into the structural connecting piece (5), the structural connecting piece (5) is adjusted to be level with the adjusting nut (7), and the structural connecting piece (5) is locked with the nut; S5, hanging the prefabricated beam (3) to the inner side of the inclined plate (503) of the trapezoidal groove of the structural connecting member (5), and after the structure is stable, fixing the end connection steel (4) of the prefabricated beam (3) to the structural connecting member (5); S6. The pre-buried anchor bolt (6) at the lower end of the prefabricated upper column (2) is inserted into the top base plate (504) of the structural connecting member (5). The structural connecting member (5) is adjusted vertically with the adjusting nut (7), and is locked and fixed with the nut; S7, erecting the formwork, allowing concrete to flow into the structural connector (5) through the spacing holes (406) and into the central square steel (501) and the keyway (8) through the through groove (505) to form a whole.

Images