A dry-connected fully assembled concrete frame structure system and assembly method

Abstract

The present invention relates to the field of prefabricated concrete buildings, and is a dry-connected fully assembled concrete frame structure system and assembly method. The fully assembled concrete frame includes a first node, a second node, and a third node; the first node includes a prefabricated column and a concrete foundation, and the prefabricated column and the concrete foundation are connected; the second node includes a prefabricated column and a prefabricated beam, and the prefabricated column and the prefabricated beam are connected; the third node includes a prefabricated beam and a prefabricated prestressed circular hole floor slab, and the prefabricated prestressed circular hole floor slab is respectively arranged on both sides of the prefabricated beam, and a plurality of L-shaped support members are respectively arranged on the two side surfaces of the prefabricated beam, and the ends of the prefabricated prestressed circular hole floor slab are abutted on the support members. During the assembly construction stage, each node only needs a small amount of local grouting operation to achieve a stable connection between prefabricated components, and there is no cast-in-place wet operation at the construction site, which not only improves the construction efficiency and the environmental quality of the construction site, but also reduces the carbon emissions at the construction site, meeting the requirements of energy conservation and environmental protection.

Description

Technical Field

[0001] The invention relates to the field of assembled concrete buildings, and in particular to a dry-connected fully assembled concrete frame structure system and an assembly method. Background Art

[0002] In 2020, several national ministries and commissions successively issued a number of policy documents, including "Several Opinions on Accelerating the Development of New Building Industrialization" and "Guiding Opinions on Promoting the Coordinated Development of Intelligent Construction and Building Industrialization", and the development of prefabricated buildings entered a new era.

[0003] Frame structures have large building spaces, flexible floor plans, and good seismic performance. They are widely used in civil public buildings. Prefabricated concrete frame structures are also widely used and have formed a relatively mature technical system. However, the most widely used system in China is the assembled integral concrete frame structure system, that is, prefabricated beams and column components are connected at the nodes using a cast-in-place wet method. This not only has poor construction efficiency and poor construction site environmental quality, but also high carbon emissions at the construction site, which does not meet the requirements of energy conservation and environmental protection. Therefore, the wet connection method cannot give full play to the advantages of prefabricated buildings and is not conducive to reflecting the advantages of prefabricated buildings in "four savings and one environmental protection".

[0004] Therefore, a dry-connected fully assembled concrete frame structure system and assembly method with less wet work during construction and installation and firm and reliable connection is needed. Summary of the invention

[0005] The present invention aims to solve the above-mentioned problems, thereby providing a dry-connected fully assembled concrete frame structure system and assembly method. During the assembly construction stage, only a small amount of local grouting work is required at each node to achieve a stable connection between prefabricated components. There is no cast-in-place wet work at the construction site, which not only improves the construction efficiency and the environmental quality of the construction site, but also reduces the carbon emissions at the construction site, meeting the requirements of energy conservation and environmental protection.

[0006] The present invention solves the above-mentioned problem by adopting the following technical solution:

[0007] A dry-connected fully assembled concrete frame structural system, the fully assembled concrete frame comprising a first node, a second node and a third node;

[0008] The first node includes a prefabricated column and a concrete foundation, the prefabricated column and the concrete foundation are connected, a piston sleeve is embedded in the bottom of the prefabricated column, a conventional sleeve is embedded in the top of the concrete foundation, a connecting steel bar inserted into the conventional sleeve is arranged in the piston sleeve, and grouting material is poured into the piston sleeve and the conventional sleeve;

[0009] The second node comprises a precast column and a precast beam, the precast column and the precast beam are connected, a steel groove is provided on the side of the precast column, and conventional sleeves pre-buried in the precast column are uniformly distributed along the outer peripheral side of the steel groove, a groove is provided on the end of the precast beam, a piston sleeve pre-buried in the end of the precast beam is provided at the beam end, the steel groove is inserted in the groove, a connecting steel bar inserted in the conventional sleeve is provided in the piston sleeve, grouting material is poured in the piston sleeve and the conventional sleeve, the grouting hole and the grouting hole of the piston sleeve for connecting the upper steel frame of the precast beam are both toward the upper surface of the beam, and the grouting hole and the grouting hole of the piston sleeve for connecting the lower steel frame of the precast beam are both toward the side of the beam;

[0010] The third node includes a prefabricated beam and a prefabricated prestressed circular hole floor slab, the prefabricated prestressed circular hole floor slab is respectively arranged on both sides of the prefabricated beam, and a plurality of L-shaped support members are respectively arranged on both side surfaces of the prefabricated beam, and the plurality of support members are arranged at a certain interval along the length direction of the prefabricated beam, and the end of the prefabricated prestressed circular hole floor slab abuts against the support member, and a plurality of semicircular grooves are arranged at a certain interval on the upper top surface of the prefabricated beam along the length direction of the prefabricated beam, and a bent steel bar is arranged in each semicircular groove, and the two ends of the bent steel bar are respectively inserted into the channel of the prefabricated prestressed circular hole floor slab, and grouting material is poured in the channel of the prefabricated prestressed circular hole floor slab and in the semicircular groove of the prefabricated beam.

[0011] Furthermore, the prefabricated column includes an upper prefabricated column member, a plurality of middle prefabricated column members and a lower prefabricated column member, a piston sleeve is pre-embedded at the bottom of the upper prefabricated column member, a conventional sleeve is pre-embedded at the top of each middle prefabricated column member, a piston sleeve is pre-embedded at the bottom of each middle prefabricated column member, a conventional sleeve is pre-embedded at the top of the lower prefabricated column member, and a piston sleeve is pre-embedded at the bottom of the lower prefabricated column member; the connecting steel bars of the piston sleeve at the bottom of the upper prefabricated column member are inserted into the conventional sleeve at the top of the middle prefabricated column member, the connecting steel bars of the piston sleeve of the upper prefabricated column member between adjacent middle prefabricated column members are inserted into the conventional sleeve of the lower prefabricated column member, and the connecting steel bars of the piston sleeve at the bottom of the middle prefabricated column member are inserted into the conventional sleeve at the top of the lower prefabricated column member, and grouting material is poured into the piston sleeves and conventional sleeves of the prefabricated column members, the plurality of middle prefabricated column members and the lower prefabricated column member.

[0012] Furthermore, the piston sleeve comprises a sleeve, a piston and a connecting steel bar, the outer side of the second end of the sleeve is flush with the end face of the prefabricated column connecting end, the sleeve is a cylindrical structure, a first plug is connected to the first end of the sleeve, a second plug is connected to the second end of the sleeve, a grouting hole and a grouting hole are arranged on the sleeve between the first plug and the second plug, the grouting hole is close to the first plug, the grouting hole is close to the second plug, and the grouting hole and the grouting hole both extend outward from the prefabricated column or prefabricated beam; the piston is slidably mounted in the sleeve The piston is located between the grouting hole and the slurry outlet hole on one side close to the grouting hole, and the grouting hole is located between the piston and the first plug; the connecting steel bar is placed inside the sleeve, the first end of the connecting steel bar is connected to the piston, a through hole is provided in the middle of the second plug, and the second end of the connecting steel bar is inserted into the through hole of the second plug; the first plug is connected to the stress-bearing steel bar in the prefabricated column or prefabricated beam; when grouting material is poured into the sleeve, the grouting material will push the piston to move toward the second end of the sleeve, thereby causing the connecting steel bar to extend out of the sleeve and enter into the conventional sleeve.

[0013] Furthermore, a limiting steel bar is arranged between the piston and the first plug, one end of the limiting steel bar is connected to the first end of the steel bar, and the other end of the limiting steel bar abuts against the inner side surface of the first plug.

[0014] Furthermore, a plastic film is provided at the bottom of the second plug to seal the through hole on the second plug; and a left-right symmetrical notch is provided on the outer surface of the sleeve with the sleeve axis as the center.

[0015] Furthermore, rubber plugs are provided on the grouting hole and the slurry outlet hole to seal the grouting hole and the slurry outlet hole; the slurry outlet hole and the inner side of the second plug are arranged at a distance, and the distance between the slurry outlet hole and the second plug is consistent with the thickness of the piston.

[0016] Furthermore, a sealing ring is provided between the prefabricated column and the concrete foundation at the first node and between the prefabricated column and the prefabricated beam at the second node.

[0017] Furthermore, the steel tongue and groove includes a plate body and an abutment plate body, the abutment plate body is vertically fixed at the middle part of one side surface of the plate body, a plurality of mounting holes are arranged on the plate body, a plurality of embedded nut sleeves are arranged on the prefabricated column, and the plate body is fastened to the side surface of the prefabricated column by bolts; the groove cross-section is a I-shaped structure, the groove extends along the length direction of the prefabricated beam, an opening is arranged at the bottom of the groove, an abutment strip is embedded at the top of the groove, the abutment plate body is inserted into the groove and abuts against the abutment strip.

[0018] Furthermore, the prefabricated beam is provided with mounting holes penetrating through two side surfaces of the prefabricated beam, one of the two supporting members is provided with tension bolt holes, and the two supporting members are fastened to the side surfaces of the prefabricated beam by tension bolts; the lower bottom surface of the prefabricated prestressed circular hole floor slab is abutted against the other plate body of the supporting member; and a cement block plug is provided in the hole of the prefabricated prestressed circular hole floor slab.

[0019] A dry-connected fully assembled concrete frame structure system and assembly method, comprising the following steps:

[0020] S1, assembly of precast columns and concrete foundation at the first node;

[0021] S1-1. Lay a sealing ring on the upper end surface of the concrete foundation, and hoist the prefabricated column so that the piston sleeve on the prefabricated column and the conventional sleeve on the concrete foundation are aligned;

[0022] S1-2, inject grouting material into the conventional sleeve on the concrete foundation until the grouting material in the conventional sleeve overflows from the grouting hole;

[0023] S1-3, injecting grouting material into the piston sleeve on the prefabricated column, and pushing the piston to move toward the second end of the sleeve under the push of the grouting material, so that the steel bar extends out of the prefabricated column and enters the conventional sleeve;

[0024] S1-4, when the piston moves to the second plug, the grouting material overflows from the grouting hole of the piston sleeve, and the grouting is completed. At the same time, the connecting steel bar can be fully inserted into the conventional sleeve to achieve the connection between the prefabricated column and the concrete foundation. The grouting hole of the piston sleeve is connected by a hose, and the upward height exceeds the grouting hole, which can effectively prevent the grouting material from falling and causing the internal part to be loose;

[0025] S2, assembly of precast columns and precast beams at the second node;

[0026] S2-1. Install the steel tongue and groove on the side of the prefabricated column by tension bolts, and adjust the axis positioning and elevation;

[0027] S2-2. Hoist the precast beam, place the precast beam against the steel groove, adjust the positioning of the precast beam, ensure that the piston sleeve is aligned with the conventional sleeve on the side of the precast column, and reserve a 5-10mm construction adjustment gap between the beam end face and the column side to achieve support-free construction of the precast beam;

[0028] S2-3, laying sealing rings between precast columns and precast beams;

[0029] S2-4, inject grouting material into the conventional sleeve until the grouting hole overflows with grouting material; inject grouting material into the piston sleeve, and under the push of the grouting material, the piston moves toward the second end of the sleeve, so that the steel bar extends out of the prefabricated beam and enters the conventional sleeve. The grouting hole and the grouting hole of the piston sleeve for connecting the upper steel frame of the prefabricated beam are connected to the hose, and the upward height exceeds the diameter of the piston sleeve, which can effectively prevent the grouting material from flowing out and causing the interior to be loose;

[0030] S2-5, when the piston moves to the second plug, the grouting material overflows from the grouting hole of the piston sleeve, the grouting is completed, and the connecting steel bar can be fully inserted into the conventional sleeve;

[0031] S2-6, using grouting material to seal the construction adjustment joint and the groove of the prefabricated beam, so as to achieve the connection between the prefabricated column and the prefabricated beam;

[0032] S3, precast beams and precast prestressed circular hole floor slabs at the third node;

[0033] S3-1. Fasten the support members to both sides of the precast beam by tension bolts and adjust the elevation of the support members;

[0034] S3-2, hoist the prefabricated prestressed circular hole floor slabs on both sides of the prefabricated beam at the same time, and the prefabricated prestressed circular hole floor slabs are abutted against the supporting members;

[0035] S3-3, placing the bent steel bar in the semicircular groove of the prefabricated beam, and extending both ends of the bent steel bar into the holes of the prefabricated prestressed circular hole floor slabs on both sides;

[0036] S3-4, pour grouting material into the semicircular groove and the prefabricated prestressed circular hole floor slab to achieve the support of the prefabricated prestressed circular hole floor slab.

[0037] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0038] The force transmission path of the present invention is simple and reliable, with good integrity, stability and seismic resistance. During the assembly construction stage, only a small amount of grouting work is required at each node to achieve a stable connection between prefabricated components. There is no cast-in-place wet operation at the construction site, which not only improves the construction efficiency and the environmental quality of the construction site, but also reduces the carbon emissions of the construction site, meets the requirements of energy conservation and environmental protection, comprehensively improves the level of green construction, realizes "four savings and one environmental protection", and can greatly promote the development of building industrialization and the realization of the "dual carbon" goal; and there are no exposed steel bars or protruding components on the prefabricated columns, prefabricated beams and prefabricated prestressed circular hole floor slabs, the components have a high degree of standardization, low mold cost, high production efficiency, and convenient storage and transportation. It is convenient and reduces production costs; the piston sleeve, conventional sleeve and bent steel bars replace traditional exposed steel bars or protruding components, which can avoid exposed steel bars or protruding components of prefabricated columns, prefabricated beams and prefabricated prestressed round hole floors in the production, transportation, stacking, lifting and other links, and avoid bending, deformation, rust and other phenomena, thereby improving the assembly efficiency of prefabricated columns, prefabricated beams and prefabricated prestressed round hole floors; at the same time, prefabricated beams and prefabricated prestressed round hole floors are full-section prefabricated components that can bear the corresponding construction loads, and can quickly meet the supporting conditions by matching with the corresponding auxiliary accessories, realizing on-site construction without support, which is convenient and fast, greatly improving the construction efficiency, and effectively saving construction costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the installation structure of the prefabricated column, prefabricated beam and concrete foundation of the present invention;

[0040] Figure 2 is a schematic structural diagram of the first node of the present invention;

[0041] Figure 3 is a schematic diagram of the structure of the second node of the present invention;

[0042] Figure 4 is a schematic structural diagram of the third node of the present invention;

[0043] Figure 5 yes Figure 4 Schematic diagram of the EE surface structure;

[0044] Figure 6 yes Figure 4 Schematic diagram of the FF surface structure;

[0045] Figure 7 It is a schematic diagram of the installation structure of the upper prefabricated column and the middle prefabricated column of the present invention;

[0046] Figure 8 It is a schematic diagram of the steel tongue and groove structure of the present invention;

[0047] In the figure: 1. precast column; 11. steel groove; 12. upper precast column; 13. middle precast column; 14. lower precast column; 2. concrete foundation; 3. precast beam; 31. groove; 32. abutment strip; 4. precast prestressed circular hole floor; 41. semicircular groove; 42. bent steel bar; 43. channel; 5. piston sleeve; 51. sleeve; 52. piston; 53. connecting steel bar; 54. first plug; 55. second plug; 56. grouting hole; 57. grouting hole; 58. limiting steel bar; 59. notch; 6. conventional sleeve; 7. load-bearing steel bar; 8. support; 9. sealing ring; 10. cement block plug. DETAILED DESCRIPTION

[0048] The following description of the embodiments will help the public better understand the present invention, but the specific embodiments given by the applicant cannot and should not be regarded as limitations on the technical solutions of the present invention. Any changes to the definitions of components or technical features and / or formal but not substantial changes to the overall structure should be regarded as the scope of protection defined by the technical solutions of the present invention.

[0049] See also Figures 1 to 8 As shown, the technical solution of the present invention is as follows:

[0050] A dry-connected fully assembled concrete frame structural system, the fully assembled concrete frame comprising a first node, a second node and a third node;

[0051] The first node includes a precast column 1 and a concrete foundation 2, the precast column 1 and the concrete foundation 2 are connected, a piston sleeve 5 is embedded in the bottom of the precast column 1, a conventional sleeve 6 is embedded in the top of the concrete foundation 2, the conventional sleeve 6 is connected to the stress-bearing steel bar 7 in the concrete foundation 2, a connecting steel bar 53 inserted into the conventional sleeve 6 is arranged in the piston sleeve 5, and grouting material is poured into the piston sleeve 5 and the conventional sleeve 6;

[0052] The second node includes a precast column 1 and a precast beam 3, the precast column 1 and the precast beam 3 are connected, a steel groove 11 is provided on the side of the precast column 1, and conventional sleeves 6 pre-buried in the precast column 1 are uniformly distributed along the outer peripheral side of the steel groove 11, a groove 31 is provided on the end of the precast beam 3, and a piston sleeve 5 pre-buried in the end of the precast beam 3 is provided at the beam end, the steel groove 11 is inserted in the groove 31, and a connecting steel bar 53 inserted into the conventional sleeve 6 is provided in the piston sleeve 5, and grouting material is poured into the piston sleeve 5 and the conventional sleeve 6; the grouting holes 56 and the grouting holes 57 of the piston sleeve 5 for connecting the upper steel frame of the precast beam 3 are both facing the upper surface of the beam, and the grouting holes 56 and the grouting holes 57 of the piston sleeve 5 for connecting the lower steel frame of the precast beam 3 are both facing the side of the beam;

[0053] The third node includes a precast beam 3 and a precast prestressed circular hole floor slab 4. The precast prestressed circular hole floor slab 4 is a precast one-way concrete floor slab using a prestressed circular hole plate, which is designed as a one-way plate with simple support at both ends. The precast prestressed circular hole floor slab 4 is respectively arranged on both sides of the precast beam 3, and a plurality of support members 8 with L-shaped structures are respectively arranged on the two side surfaces of the precast beam 3. The plurality of support members 8 are arranged at a certain interval along the length direction of the precast beam 3. The end of the precast prestressed circular hole floor slab 4 abuts against the support members 8. A plurality of semicircular grooves 41 are arranged at a certain interval on the upper top surface of the precast beam 3 along the length direction of the precast beam 3. A bent steel bar 42 is arranged in each semicircular groove 41. The two ends of the bent steel bar 42 are respectively inserted into the channel 43 of the precast prestressed circular hole floor slab 4, and grouting material is poured in the channel 43 of the precast prestressed circular hole floor slab 4 and the semicircular groove 41 of the precast beam 3.

[0054] Furthermore, the prefabricated column 1 includes an upper prefabricated column 12, a plurality of middle prefabricated column members 13 and a lower prefabricated column member 14, a piston sleeve 5 is embedded in the bottom of the upper prefabricated column member 12, a conventional sleeve 6 is embedded in the top of each middle prefabricated column member 13, a piston sleeve 5 is embedded in the bottom of each middle prefabricated column member 13, a conventional sleeve 6 is embedded in the top of the lower prefabricated column member 14, and a piston sleeve 5 is embedded in the bottom of the lower prefabricated column member 14; the connecting steel bar 53 of the piston sleeve 5 at the bottom of the upper prefabricated column member 12 is inserted into the conventional sleeve 6 at the top of the middle prefabricated column member 13, and the middle prefabricated column members 13 located above the upper prefabricated column member 12 are connected to each other. The piston sleeve 5 connecting steel bar 53 of the prefabricated column member 13 is inserted into the conventional sleeve 6 of the middle prefabricated column member 13 located below, the connecting steel bar 53 of the piston sleeve 5 at the bottom of the middle prefabricated column member 13 is inserted into the conventional sleeve 6 at the top of the lower prefabricated column member 14, and the piston sleeve 5 and the conventional sleeve 6 of the upper prefabricated column member 12, multiple middle prefabricated column members 13 and the lower prefabricated column member 14 are all filled with grouting material; the upper prefabricated column member 12, multiple middle prefabricated column members 13 and the lower prefabricated column member 14 are continuously connected at the connection with the prefabricated beam 3 and are provided with a rough surface, and are located within the range of h / 3-h / 3+500mm (h is the floor height) above the floor height.

[0055] Furthermore, when the precast beam 3 is produced in the factory, the mold of the precast beam 3 is inverted, and a strip-shaped prefabricated semicircular groove 41 mold is set on the bottom mold with a spacing of 200mm; then a semicircular groove 41 with a spacing of 200mm is formed on the upper top surface of the precast beam 3 for arranging the bent steel bars 42, and mounting holes with a spacing of 500mm are set on the side of the precast beam 3 for installing tension bolts; the strip-shaped prefabricated semicircular groove 41 mold includes a rectangular strip-shaped flexible rubber thin base layer and a plurality of semi-cylindrical rows of polystyrene blocks or air bags evenly spaced and fixed on the flexible rubber thin base layer, the spacing between adjacent polystyrene blocks is usually 200mm, the length of the flexible rubber thin base layer is adapted to the width of the precast beam 3, the diameter of the semi-cylindrical cross-section is adapted to the thickness of the longitudinal reinforcement protective layer of the precast beam 3, the outermost polystyrene block is 50mm away from the end of the flexible rubber thin base layer, and marking lines are provided on the flexible rubber thin base layer every 50mm.

[0056] Furthermore, the piston sleeve 5 includes a sleeve 51, a piston 52 and a connecting steel bar 53. The sleeve 51 is made of a seamless steel pipe, and the inner wall of the sleeve 51 is smooth. The piston 52 is made of round steel. The connecting steel bar 53 should meet the anchoring length and meet the requirements of "Grouting Sleeve for Steel Bar Connection" JG / T 398 related requirements, the diameter of the connecting steel bar 53 is one level larger than the stressed steel bar 7, the difference between the inner diameter of the sleeve 51 and the nominal diameter of the connecting steel bar 53 is not less than 15mm, the length of the sleeve 51 is greater than the length of the connecting steel bar 53, the outer side of the second end of the sleeve 51 is flush with the end face of the connecting end of the prefabricated column 1, the sleeve 51 is a cylindrical structure, a first plug 54 is connected to the first end of the sleeve 51, and a second plug 55 is connected to the second end of the sleeve 51, the first plug 54 and the second plug 55 are both made of round steel, and a grouting hole 56 and a grouting hole 57 are arranged on the sleeve 51 between the first plug 54 and the second plug 55, the grouting hole 56 is close to the first plug 54, the diameter of the grouting hole 56 is not more than 8mm, the grouting hole 57 is close to the second plug 55, the diameter of the grouting hole 57 is not more than 5mm, and the grouting hole 56 and the grouting hole 57 both extend outward from the precast column 1 or the precast beam 3; the piston 52 is slidably installed in the sleeve 51, the piston 52 is located between the grouting hole 56 and the grouting hole 57 on one side close to the grouting hole 56, and the grouting hole 56 is located between the piston and the first plug 54; the connecting steel bar 53 is placed inside the sleeve 51, the first end of the connecting steel bar 53 is connected to the piston 52, and a through hole is provided in the middle of the second plug 55, and the inner diameter of the through hole is greater than The diameter of the connecting steel bar 53 is 1mm-2mm, which is conducive to the smooth extension of the connecting steel bar 53 from the through hole, and the second end of the connecting steel bar 53 is inserted into the through hole of the second plug 55; the first plug 54 is connected to the stress-bearing steel bar 7 in the prefabricated column 1 or the prefabricated beam 3; when the grouting material is poured into the sleeve 51, the grouting material will push the piston 52 to move toward the second end of the sleeve, so that the connecting steel bar 53 extends out of the sleeve 51 and enters the conventional sleeve 6; the connecting steel bar 53 transmits internal force through the second plug 55 and the grouting material, so the inner wall of the sleeve 51 does not need to be provided with a shear groove; the sleeve 51 transmits the stress-bearing steel bar through the piston 52 and the second plug 55 7, the sleeve 51 transmits the axial pressure of the stressed steel bar 7 through the piston 52 and the grouting material injected into the sleeve 51. The inner diameter of the sleeve and the strength of the grouting material are designed according to the axial pressure, so the force transmission path of the sleeve 51 is simple, clear and reliable; the first end and the second end of the sleeve 51 are both provided with internal threads, and the outer surfaces of the first plug 54 and the second plug 55 are both provided with external threads throughout the length. The first plug 54 and the second plug 55 are both installed in the first end and the second end of the sleeve 51 through a threaded structure; a circular groove is provided in the middle of the first plug 54, and the circular groove is threadedly connected to the end of the stressed steel bar 7;The structure of the sleeve 51 can achieve a stable connection with the first plug 54 and the second plug 55. The circular groove on the first plug 54 can achieve a stable connection with the stressed steel bar 7. The diameter of the piston 52 is adapted to the inner diameter of the sleeve 51. The diameter of the piston 52 is 1 mm smaller than the inner diameter of the sleeve 51. The outer surface of the piston 52 is smooth, which is conducive to the sliding of the piston 52 in the sleeve 51. A threaded hole is provided in the middle of the piston 52 to be threadedly connected with the connecting steel bar 53. The threaded hole can achieve a stable connection between the piston 52 and the connecting steel bar 53.

[0057] Furthermore, a limiting steel bar 58 is arranged between the piston 52 and the first plug 54, one end of the limiting steel bar 58 is connected to the first end of the connecting steel bar 53, and the other end of the limiting steel bar 58 abuts against the inner side surface of the first plug 54; the arrangement of the limiting steel bar 58 can limit the piston 52 and prevent the piston 52 from blocking the grouting hole 56 during installation.

[0058] Furthermore, a plastic film is provided at the bottom of the second plug 55 to seal the through hole on the second plug 55; the setting of the above-mentioned plastic film can effectively prevent the concrete slurry from seeping into the inside of the sleeve 51 during the production process of the prefabricated column 1 or the prefabricated beam 3; the outer surface of the sleeve 51 is provided with a left-right symmetrical notch 59 centered on the axis of the sleeve 51, the notch 59 has a depth of 2mm, a width of 3mm, a length of 1 / 4 of the circumference, and the minimum wall thickness of the sleeve 51 is 3mm; the setting of the above-mentioned notch 59 can increase the grip of the concrete in the sleeve 51 and the prefabricated column 1 or the prefabricated beam 3.

[0059] Furthermore, rubber plugs are provided on the grouting holes 56 and the slurry outlet holes 57 to block the grouting holes 56 and the slurry outlet holes 57; the setting of the rubber plugs during the production process of the prefabricated column 1 or the prefabricated beam 3 can effectively prevent the concrete slurry from seeping into the inside of the sleeve 51; the slurry outlet hole 57 and the inner side of the second plug 55 are arranged at a distance, and the distance between the slurry outlet hole 57 and the second plug 55 is consistent with the thickness of the piston 52; the above-mentioned structural setting can prevent the piston 52 from blocking the slurry outlet hole 57, thereby ensuring the smooth progress of the grouting construction.

[0060] Furthermore, a sealing ring 9 is provided between the precast column 1 and the concrete foundation 2 at the first node and between the precast column 1 and the precast beam 3 at the second node.

[0061] Furthermore, the steel tongue and groove 11 includes a plate body and an abutting plate body, the abutting plate body is vertically fixed in the middle of one of the side surfaces of the plate body, a plurality of mounting holes are arranged on the plate body, a plurality of embedded nut sleeves are arranged on the prefabricated column 1, each nut sleeve corresponds to the mounting hole, the plate body is fastened to the side surface of the prefabricated column 1 by bolts, and the bolts and the nut sleeves are connected; the cross-section of the groove 31 is a I-shaped structure, the groove 31 extends along the length direction of the prefabricated beam 3, an opening is arranged at the bottom of the groove 31, an abutting strip 32 is embedded at the top of the groove 31, the abutting plate body is inserted into the groove 31 and abuts against the abutting strip 32; the steel tongue and groove 11 is installed on the side surface of the prefabricated column 1 by bolts, supports the prefabricated beam 3, and transmits the vertical shear force at the end of the prefabricated beam 3.

[0062] Furthermore, the prefabricated beam 3 is provided with mounting holes penetrating through two side surfaces of the prefabricated beam 3, and one of the two support members 8 is provided with tension bolt holes, and the two support members 8 are fastened to the side surfaces of the prefabricated beam 3 by tension bolts; the prefabricated prestressed circular hole floor slab 4 is abutted against the support members 8, so that the prefabricated prestressed circular hole floor slab 4 can be supported without support, and the end of the prefabricated prestressed circular hole floor slab 4 is supported by the support members 8 to transfer the vertical load of the prefabricated prestressed circular hole floor slab 4; the lower bottom surface of the prefabricated prestressed circular hole floor slab 4 is abutted against the other plate body of the support member 8; and a cement block plug 10 is provided in the channel 43 of the prefabricated prestressed circular hole floor slab 4.

[0063] A dry-connected fully assembled concrete frame structure system and assembly method, comprising the following steps:

[0064] S1, assembly of prefabricated column 1 and concrete foundation 2 of the first node;

[0065] S1-1, lay a sealing ring 9 on the upper end surface of the concrete foundation 2, and hoist the prefabricated column 1 so that the piston sleeve 5 on the prefabricated column 1 and the conventional sleeve 6 on the concrete foundation 2 are aligned;

[0066] S1-2, inject grouting material into the conventional sleeve 6 on the concrete foundation 2, until the grouting material in the conventional sleeve 6 overflows from the grouting hole;

[0067] S1-3, inject grouting material into the piston sleeve 5 on the prefabricated column 1, and push the piston 52 to move toward the second end of the sleeve 51 under the push of the grouting material, so that the connecting steel bar 53 extends out of the prefabricated column 1 and enters the conventional sleeve 6;

[0068] S1-4, when the piston 52 moves to the second plug 55, the grouting material overflows from the grouting hole 57 of the piston sleeve 5, and the grouting is completed. At the same time, the connecting steel bar 53 can be completely inserted into the conventional sleeve 6 to achieve the connection between the prefabricated column 1 and the concrete foundation 2. The grouting hole 57 of the piston sleeve 5 is connected by a hose, and the upward height exceeds the grouting hole 56, which can effectively prevent the grouting material from falling and causing the interior to be loose;

[0069] S2, assembling the precast column 1 and the precast beam 3 of the second node;

[0070] S2-1, install the steel groove 11 on the side of the prefabricated column 1 by tension bolts, and adjust the axis positioning and elevation;

[0071] S2-2, hoist the precast beam 3, place the precast beam 3 against the steel groove 11, adjust the position of the precast beam 3, ensure that the piston sleeve 5 is aligned with the conventional sleeve 6 on the side of the precast column 1, and reserve a 5-10mm construction adjustment gap between the beam end face and the column side face to achieve support-free construction of the precast beam 3;

[0072] S2-3, laying a sealing ring 9 between the prefabricated column 1 and the prefabricated beam 3;

[0073] S2-4, inject grouting material into the conventional sleeve 6 until the grouting hole overflows with grouting material; inject grouting material into the piston sleeve 5, and under the push of the grouting material, the piston 52 moves toward the second end of the sleeve 51, so that the steel bar extends out of the prefabricated beam 3 and enters the conventional sleeve 6, and the grouting hole 56 and the grouting hole 57 of the piston sleeve 5 for connecting the upper steel frame of the prefabricated beam 3 are both connected to the hose, and the upward height exceeds the diameter of the piston sleeve, which can effectively prevent the grouting material from flowing out and causing the internal part to be not dense;

[0074] S2-5, when the piston 52 moves to the second plug 55, the grouting material overflows from the grout outlet 57 of the piston sleeve 5, and the grouting is completed. At the same time, the connecting steel bar 53 can be completely inserted into the conventional sleeve 6;

[0075] S2-6, using grouting material to seal the construction adjustment joint and the groove 31 of the prefabricated beam 3, so as to achieve the connection between the prefabricated column 1 and the prefabricated beam 3;

[0076] S3, prefabricated beam 3 and prefabricated prestressed circular hole floor slab 4 at the third node;

[0077] S3-1, fasten the support member 8 to both side surfaces of the prefabricated beam 3 by tension bolts, and adjust the elevation of the support member 8;

[0078] S3-2, hoist the prefabricated prestressed circular hole floor slabs 4 on both sides of the prefabricated beam 3 at the same time, and the prefabricated prestressed circular hole floor slabs 4 abut against the support members 8;

[0079] S3-3, placing the bent steel bar 42 in the semicircular groove 31 of the prefabricated beam 3, and extending both ends of the bent steel bar 42 into the holes 43 of the prefabricated prestressed circular hole floor slab 4 on both sides;

[0080] S3-4, pouring grouting material into the semicircular groove 31 and the prefabricated prestressed circular hole floor slab 4 to achieve support for the prefabricated prestressed circular hole floor slab 4.

[0081] The beneficial technical effects of the present invention are as follows: the force transmission path of the present invention is simple and reliable, and the integrity, stability and seismic resistance are good. During the assembly construction stage, only a small amount of local grouting work is required at each node to achieve a stable connection between prefabricated components. There is no cast-in-place wet work at the construction site, which not only improves the construction efficiency and the environmental quality of the construction site, but also reduces the carbon emissions of the construction site, meets the requirements of energy conservation and environmental protection, comprehensively improves the level of green construction, realizes "four savings and one environmental protection", and can greatly promote the development of building industrialization and the realization of the "dual carbon" goal; and there are no exposed steel bars or protruding components on the prefabricated columns 1, prefabricated beams 3 and prefabricated prestressed circular hole floor slabs 4, the components have a high degree of standardization, low mold cost, high production efficiency, It is convenient for storage and transportation, and the production cost is reduced. The piston sleeve 5, the conventional sleeve 6 and the bent steel bar 42 replace the traditional exposed steel bars or protruding components, which can avoid the exposed steel bars or protruding components of the prefabricated columns 1, prefabricated beams 3 and prefabricated prestressed circular hole floor slabs 4 during production, transportation, stacking, lifting and other links, and avoid bending, deformation, rust and other phenomena, thereby improving the assembly efficiency of the prefabricated columns 1, prefabricated beams 3 and prefabricated prestressed circular hole floor slabs 4; at the same time, the prefabricated beams 3 and prefabricated prestressed circular hole floor slabs 4 are all full-section prefabricated components, which can bear the corresponding construction loads, and can quickly meet the supporting conditions by matching the corresponding auxiliary accessories, so as to realize on-site construction without support, which is convenient and fast, greatly improves the construction efficiency, and effectively saves construction costs and time costs.

[0082] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A dry-connected fully assembled concrete frame structure system, characterized in that: The fully assembled concrete frame includes a first node, a second node and a third node; The first node includes a prefabricated column and a concrete foundation, the prefabricated column and the concrete foundation are connected, a piston sleeve is embedded in the bottom of the prefabricated column, a conventional sleeve is embedded in the top of the concrete foundation, a connecting steel bar inserted into the conventional sleeve is arranged in the piston sleeve, and grouting material is poured into the piston sleeve and the conventional sleeve; The second node comprises a precast column and a precast beam, the precast column and the precast beam are connected, a steel groove is arranged on the side of the precast column, and conventional sleeves pre-buried in the precast column are uniformly distributed along the outer peripheral side of the steel groove, a groove is arranged on the end of the precast beam, a piston sleeve pre-buried in the end of the precast beam is arranged at the beam end, the steel groove is inserted in the groove, a connecting steel bar inserted in the conventional sleeve is arranged in the piston sleeve, and grouting material is poured into the piston sleeve and the conventional sleeve, the grouting hole and the grouting hole for connecting the upper steel frame of the precast beam are both on the upper surface of the beam, and the grouting hole and the grouting hole for connecting the lower steel frame of the precast beam are both on the side of the beam; The third node includes a prefabricated beam and a prefabricated prestressed circular hole floor slab, the prefabricated prestressed circular hole floor slab is respectively arranged on both sides of the prefabricated beam, a plurality of support members with L-shaped structures are respectively arranged on both side surfaces of the prefabricated beam, the plurality of support members are arranged at a certain interval along the length direction of the prefabricated beam, the end of the prefabricated prestressed circular hole floor slab abuts against the support member, a plurality of semicircular grooves are arranged at a certain interval along the length direction of the prefabricated beam on the upper top surface of the prefabricated beam, a bent steel bar is arranged in each semicircular groove, the two ends of the bent steel bar are respectively inserted into the hole channel of the prefabricated prestressed circular hole floor slab, and grouting material is poured in the hole channel of the prefabricated prestressed circular hole floor slab and in the semicircular groove of the prefabricated beam; The prefabricated column comprises an upper prefabricated column member, a plurality of middle prefabricated column members and a lower prefabricated column member, wherein the upper prefabricated column member, the plurality of middle prefabricated column members and the lower prefabricated column member are continuously connected at the connection with the prefabricated beam and a rough surface is provided. A piston sleeve is embedded in the bottom of the upper prefabricated column, a conventional sleeve is embedded in the top of each middle prefabricated column, a piston sleeve is embedded in the bottom of each middle prefabricated column, a conventional sleeve is embedded in the top of the lower prefabricated column, and a piston sleeve is embedded in the bottom of the lower prefabricated column; the connecting steel bars of the piston sleeve at the bottom of the upper prefabricated column are inserted into the conventional sleeve at the top of the middle prefabricated column, the connecting steel bars of the piston sleeve of the upper middle prefabricated column between adjacent middle prefabricated columns are inserted into the conventional sleeve at the lower middle prefabricated column, and the connecting steel bars of the piston sleeve at the bottom of the middle prefabricated column are inserted into the conventional sleeve at the top of the lower prefabricated column, and the piston sleeves and conventional sleeves of the prefabricated column, the plurality of middle prefabricated columns and the lower prefabricated column are all filled with grouting material; The piston sleeve comprises a sleeve, a piston and connecting steel bars. The sleeve has the same opening direction as the cylinder body of a conventional sleeve. The outer side of the second end of the sleeve is flush with the end face of the prefabricated column connecting end. The sleeve is a cylindrical structure. A first plug is connected to the first end of the sleeve, and a second plug is connected to the second end of the sleeve. A grouting hole and a slurry outlet hole are arranged on the sleeve between the first plug and the second plug. The grouting hole is close to the first plug, and the slurry outlet hole is close to the second plug. There is a spacing between the slurry outlet hole and the inner side of the second plug. The spacing between the slurry outlet hole and the second plug is consistent with the thickness of the piston. The grouting hole and the slurry outlet hole both extend outward from the prefabricated column or prefabricated beam. The piston is slidably installed in the sleeve, and movable The sliding starting position of the plug is located between the grouting hole and the outlet hole, on one side close to the grouting hole, and the grouting hole is located between the piston and the first plug; the connecting steel bar is placed inside the sleeve, and the first end of the connecting steel bar is connected to the piston, and a through hole is provided in the middle of the second plug, and the second end of the connecting steel bar is inserted into the through hole of the second plug; the first plug is connected to the stress-bearing steel bar in the prefabricated column or prefabricated beam; when grouting material is poured into the sleeve, the grouting material will push the piston to move toward the second end of the sleeve, thereby causing the connecting steel bar to extend out of the sleeve and enter into the conventional sleeve, and the sliding end position of the piston reaches the second plug, and the grouting material overflows from the outlet hole of the piston sleeve, the grouting is ended, and the connecting steel bar is completely inserted into the conventional sleeve.

2. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized in that: A limiting steel bar is arranged between the piston and the first plug, one end of the limiting steel bar is connected to the first end of the steel bar, and the other end of the limiting steel bar abuts against the inner side surface of the first plug.

3. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized in that: A plastic film is provided at the bottom of the second plug to seal the through hole on the second plug; and a left-right symmetrical notch is provided on the outer surface of the sleeve with the axis of the sleeve as the center.

4. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized in that: The grouting holes and the grouting holes are both provided with rubber plugs for sealing the grouting holes and the grouting holes.

5. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized in that: A sealing ring is arranged between the prefabricated column and the concrete foundation at the first node and between the prefabricated column and the prefabricated beam at the second node.

6. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized by: The steel tongue and groove includes a plate body and an abutment plate body, the abutment plate body is vertically fixed in the middle of one side of the plate body, a plurality of mounting holes are arranged on the plate body, a plurality of embedded nut sleeves are arranged on the prefabricated column, and the plate body is fastened to the side of the prefabricated column by bolts; the groove cross-section is a I-shaped structure, the groove extends along the length direction of the prefabricated beam, an opening is arranged at the bottom of the groove, an abutment strip is embedded at the top of the groove, the abutment plate body is inserted into the groove and abuts against the abutment strip.

7. The dry-connected fully assembled concrete frame structure system according to claim 1 is characterized by: The prefabricated beam is provided with mounting holes penetrating through two side surfaces of the prefabricated beam, one of the two supporting members is provided with tension bolt holes, and the two supporting members are fastened to the side surfaces of the prefabricated beam by tension bolts; the lower bottom surface of the prefabricated prestressed circular hole floor slab abuts against the other plate body of the supporting member; and a cement block plug is provided in the hole of the prefabricated prestressed circular hole floor slab.

8. An assembly method for a dry-connected fully assembled concrete frame structure system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, assembly of precast columns and concrete foundation at the first node; S1-1. Lay a sealing ring on the upper end surface of the concrete foundation, and hoist the prefabricated column so that the piston sleeve on the prefabricated column and the conventional sleeve on the concrete foundation are aligned; S1-2, inject grouting material into the conventional sleeve on the concrete foundation until the grouting material in the conventional sleeve overflows from the grouting hole; S1-3, injecting grouting material into the piston sleeve on the prefabricated column, and pushing the piston to move toward the second end of the sleeve under the push of the grouting material, so that the steel bar extends out of the prefabricated column and enters the conventional sleeve; S1-4, when the piston moves to the second plug, the grouting material overflows from the grouting hole of the piston sleeve, and the grouting is completed. At the same time, the connecting steel bar can be fully inserted into the conventional sleeve to achieve the connection between the prefabricated column and the concrete foundation. The grouting hole of the piston sleeve is connected by a hose, and the upward height exceeds the grouting hole, which can effectively prevent the grouting material from falling and causing the internal part to be loose; S2, assembly of precast columns and precast beams at the second node; S2-1. Install the steel tongue and groove on the side of the prefabricated column by tension bolts, and adjust the axis positioning and elevation; S2-2. Hoist the precast beam, place the precast beam against the steel groove, adjust the positioning of the precast beam, ensure that the piston sleeve is aligned with the conventional sleeve on the side of the precast column, and reserve a 5-10mm construction adjustment gap between the beam end face and the column side to achieve support-free construction of the precast beam; S2-3, laying sealing rings between precast columns and precast beams; S2-4, inject grouting material into the conventional sleeve until the grouting hole overflows with grouting material; inject grouting material into the piston sleeve, and under the push of the grouting material, the piston moves toward the second end of the sleeve, so that the steel bar extends out of the prefabricated beam and enters the conventional sleeve. The grouting hole and the grouting hole of the piston sleeve for connecting the upper steel frame of the prefabricated beam are connected to the hose, and the upward height exceeds the diameter of the piston sleeve, which can effectively prevent the grouting material from flowing out and causing the interior to be loose; S2-5, when the piston moves to the second plug, the grouting material overflows from the grouting hole of the piston sleeve, the grouting is completed, and the connecting steel bar can be fully inserted into the conventional sleeve; S2-6, using grouting material to seal the construction adjustment joint and the groove of the prefabricated beam, so as to achieve the connection between the prefabricated column and the prefabricated beam; S3, precast beams and precast prestressed circular hole floor slabs at the third node; S3-1. Fasten the support members to both sides of the precast beam by tension bolts and adjust the elevation of the support members; S3-2, hoist the prefabricated prestressed circular hole floor slabs on both sides of the prefabricated beam at the same time, and the prefabricated prestressed circular hole floor slabs are abutted against the supporting members; S3-3, placing the bent steel bar in the semicircular groove of the prefabricated beam, and extending both ends of the bent steel bar into the holes of the prefabricated prestressed circular hole floor slabs on both sides; S3-4, pour grouting material into the semicircular groove and the prefabricated prestressed circular hole floor slab to achieve the support of the prefabricated prestressed circular hole floor slab.

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