Flat beam-wallboard column structure combined steel frame connecting structure and method

Abstract

The invention discloses a flat beam-wallboard column structure combined steel frame connecting structure and method.In a column-column and beam-column combined connecting system, steel columns and steel flat beams are made of hot-rolled section steel, can be prefabricated in a factory and are connected through combined connecting pieces and high-strength bolts after being transported to a site; according to the beam-slab structure combined connection system, the prefabricated floor slab and the steel flat beam are tightly connected through the steel beam embedded parts, the floor slab reserved steel bars, the threaded shear-resistant fasteners and part of cast-in-place concrete, and joint stress and cooperative deformation of the prefabricated floor slab and the steel flat beam are achieved; modular walls of the composite wall combination connecting system are composed of ceramsite concrete filling materials and wall frameworks and connected with the wall frameworks through steel flat beams and multifunctional embedded parts on steel columns, and the adjacent composite walls are connected in a mortise and tenon mode through concave-convex wall units on cold-formed thin-walled steel at the two ends. The construction method can meet the use requirements of overall stress, energy conservation, seismic resistance and the like of a modern fabricated building system, the construction efficiency can be remarkably improved, and the construction quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building engineering, and in particular to a flat beam-wall panel column structure combined steel frame connection structure and method. Background Art

[0002] In recent years, due to increasing energy conservation and emission reduction policies and rising labor costs, the use of prefabricated structures has seen a rapid rise. Steel structure building systems are industrialized and green building products that align with current national strategic requirements. Promoting their adoption meets the demands of urban construction and renewal in the new era. However, numerous challenges remain in practical engineering applications, hindering their further adoption.

[0003] 1. Steel frame column-column joints and beam-column joints are critical parts of the structure. Reasonable design directly affects the structure's bearing capacity, safety, and reliability. Currently, steel frame systems still suffer from complex joint construction, poor integrity, poor seismic performance, and non-replaceability.

[0004] 2. During the installation and construction of the steel structure system wall, the existing wall structure design is relatively complex, and a series of problems such as connection stability during installation gradually emerge. At the same time, due to the size error of the prefabricated wall and the installation gap, the sound insulation effect is poor.

[0005] 3. During the construction of the steel structure system, the pouring and maintenance of the cast-in-place slabs significantly lagged behind the construction speed of the main steel structure frame. The two key components could not be connected coherently in the construction process, which seriously restricted the assembly and construction efficiency of the steel structure system, resulting in the failure to demonstrate the advantages of the steel structure building, such as short construction period and fast capital recovery.

[0006] 4. After the assembly and construction of the prefabricated floor slabs that have been developed, under the combined action of negative bending moment and shear stress, shear slip or premature cracking of concrete is easily generated at the connection between the floor slab and the steel beam, making it difficult to achieve the combined effect of the frame beam and the concrete floor slab, and reducing the integrity and bearing capacity of the slab structure. Summary of the Invention

[0007] The purpose of the present invention is to provide a flat beam-wall panel column structure combined steel frame connection structure and method with good mechanical properties, convenient connection, economy and durability, so as to solve the key technical problems of the existing building steel structure system, rapid assembly of panels during construction, and reliable connection between walls and beams and columns and between panels and beams.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A flat beam-wall panel-column structure combined steel frame connection structure, including a column-column and beam-column combined connection system, a beam-slab structure combined connection system, and a composite wall combined connection system;

[0010] The column-column and beam-column combined connection systems are connected by combined connectors and high-strength bolt groups. The combined connectors are welded together by the lower outward-extending end plates of C-shaped steel and two angle steels. The vertical plates of the angle steels are connected to the webs of the steel beams by high-strength bolts. The transverse plates of the angle steels and the lower outward-extending end plates of the C-shaped steels are connected to the upper and lower flanges of the steel beams.

[0011] The beam-slab structure combined connection system consists of assembled precast concrete floor slabs, precast steel flat beams, and cast-in-place concrete between the beams and slabs. The lower flanges of the precast steel flat beams are welded with unequal angle steels in the factory. The assembled precast concrete floor slabs are arranged with steel mesh. Vertical pre-welded studs are welded to the lower sides of the precast steel flat beams. Bolt holes are embedded in the assembled precast concrete floor slabs, and the assembled precast concrete floor slabs and the precast steel flat beams are positioned and connected by threaded shear fasteners.

[0012] The composite wall combination connection system includes precast ceramsite concrete wall panels A, precast ceramsite concrete wall panels B, splicing parts, frame beams and columns. The frame beams and columns are both reserved with C-shaped steel positioning grooves. After the precast ceramsite concrete wall panels A and precast ceramsite concrete wall panels B are transported to the site, they are lifted to the top of the frame beams and columns using a hoist and accurately positioned and connected to the frame beams and columns through the C-shaped steel positioning grooves.

[0013] Furthermore, the C-shaped steel web and flange are used as connectors between the upper steel columns and the lower steel columns.

[0014] Furthermore, the threaded shear fastener includes a high-strength bolt rod, a gasket and a nut. The head of the high-strength bolt rod is fixed on the upper flange of the unequal-leg angle steel. The assembled precast concrete floor slab with a reserved opening at the end of the high-strength bolt rod is placed on it. The assembled precast concrete floor slab is connected to the precast steel flat beam through the high-strength bolt rod, the gasket and the nut.

[0015] Furthermore, the height of the unequal-leg angle steel is determined by deducting the thickness of the assembled precast concrete floor slab from the height of the precast steel flat beam.

[0016] Furthermore, insertion grooves are left on the sides of the prefabricated ceramsite concrete wall panel A and the prefabricated ceramsite concrete wall panel B, and adjacent wall panels are connected by splicing parts.

[0017] The present invention provides another technical solution: a flat beam-wall panel column structure combined steel frame connection method, which is based on a flat beam-wall panel column structure combined steel frame connection structure and includes the following steps:

[0018] S1: Connect the steel beams, upper steel columns, and lower steel columns together through combined connectors and high-strength bolts;

[0019] S2: Pre-embed bolt holes in the prefabricated concrete floor slab, and positionally connect the prefabricated concrete floor slab to the prefabricated steel flat beam using vertical pre-welded studs, unequal-leg angle steels, and threaded shear fasteners;

[0020] S3: Insertion grooves are left on the sides of the precast ceramsite concrete wall panel A and the precast ceramsite concrete wall panel B, and adjacent wall panels are connected by splicing parts;

[0021] S4: After all wall panels are installed in place, use expansive concrete to seal the gaps between adjacent wall panels, between wall panels and frame beams, and between wall panels and columns, and fix sound insulation panels on the side walls on one side of the wall panels to improve the sound insulation effect.

[0022] Furthermore, the unequal-leg angle steels and prefabricated steel flat beams in S2 constitute functional areas for arranging water, electricity, and heating pipelines.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The flat beam-wall panel column structure combined steel frame connection structure and method of the present invention adopts a column-column and beam-column combined connection system to achieve rapid installation of column-column and beam-column nodes. It adopts a full bolt assembly connection and does not require welding at the construction site. It has a simple structure, is easy to install, has low construction difficulty and low cost, and can effectively avoid the problem of difficulty in ensuring on-site welding quality.

[0025] 2. The flat beam-wall panel-column combined steel frame connection structure and method of the present invention utilizes prefabricated floor slabs and section steel flat beams, enabling rapid and flush assembly. This not only improves the stability of the steel flat beam flanges and webs but also allows for lower floor heights while maintaining the same clear height. This structure not only meets the required beam and slab bearing capacity, effectively controls horizontal structural deflection, and improves building space utilization.

[0026] 3. The flat beam-wall panel column structure combined steel frame connection structure and method of the present invention adopts a composite wall combination connection system that divides the wall into prefabricated modular composite wall panels and spliced parts. The finished wall has good thermal insulation, heat insulation, sound insulation and impact resistance. All test pieces are mass-produced in the factory. The components are connected by mortise and tenon joints to achieve fully assembled construction, reducing wet operations. The wall layout is flexible and the installation is convenient, which is conducive to the industrialization of construction. The sound insulation board is used to seal the gap between two adjacent wall panels to further improve the sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the column-column and beam-column combined connection system of the present invention;

[0028] Figure 2 For the present invention Figure 1 A partial enlarged view of

[0029] Figure 3 This is a schematic diagram of the structure of the combined connector of the present invention;

[0030] Figure 4 This is a schematic structural diagram of the beam-slab structure combined connection system of the present invention;

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of the split structure;

[0032] Figure 6 This is a schematic structural diagram of the composite wall assembly connection system of the present invention;

[0033] Figure 7 This is a schematic plan view of the wall panel connection structure of the present invention;

[0034] Figure 8 This is a disassembled diagram of the wall panel connection structure of the present invention.

[0035] In the figure: 101, steel beam; 102, upper steel column; 103, lower steel column; 104, combined connector; 201, angle steel; 202, high-strength bolt group; 203, C-shaped steel lower side extended end plate; 301, prefabricated precast concrete floor slab; 302, steel mesh; 303, prefabricated steel flat beam; 304, vertical pre-welded studs; 305, unequal-leg angle steel; 306, threaded shear fastener; 401, precast ceramsite concrete wall panel A; 402, spliced component; 403, precast ceramsite concrete wall panel B; 404, frame beam and column. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-8 In an embodiment of the present invention, a flat beam-wall panel column structure combined steel frame connection structure is provided, including a column-column and beam-column combined connection system, a beam-slab structure combined connection system and a composite wall combined connection system.

[0038] Among them, the column-column and beam-column combined connection system is connected by a combined connector 104 and a high-strength bolt group 202. The combined connector 104 is welded by a lower side extended end plate 203 of a C-shaped steel and two angle steels 201. The vertical plate of the angle steel 201 is connected to the web of the steel beam 101 through high-strength bolts. The transverse plate of the angle steel 201 and the lower side extended end plate 203 of the C-shaped steel are connected to the upper and lower flanges of the steel beam 101. For the H-shaped main and secondary beam hinged nodes, bolts can be used to connect the web of the secondary steel beam and the main steel beam ear plate, and the upper and lower flanges do not need to be connected; the C-shaped steel web and flanges are used as connectors between the upper steel column 102 and the lower steel column 103, and are used to support the upper steel column 102 and the lower steel column 103.

[0039] In the above embodiment, the beam-slab structure combined connection system is composed of an assembled precast concrete floor 301, a precast steel flat beam 303 and cast-in-place concrete between the beam and slab. The lower flange of the precast steel flat beam 303 is welded with an unequal angle steel 305 in the factory. The height of the unequal angle steel 305 is determined by deducting the thickness of the assembled precast concrete floor 301 from the height of the precast steel flat beam 303. The unequal angle steel 305 and the precast steel flat beam 303 constitute a functional area, in which water, electricity, heating and other pipelines can be arranged, and the angle steel web can be partially opened to pass water, electricity, heating and other pipelines.

[0040] In this embodiment, the prefabricated precast concrete floor 301 is provided with a steel mesh 302. During factory processing, a concrete vacant area is left at the end for on-site pouring. Vertical pre-welded studs 304 are welded to the underside of the prefabricated steel flat beam 303. Bolt holes are embedded in the prefabricated precast concrete floor 301, and the prefabricated precast concrete floor 301 and the prefabricated steel flat beam 303 are positioned and connected via threaded shear fasteners 306. The threaded shear fasteners 306 include high-strength bolt rods, washers, and nuts. The heads of the high-strength bolt rods are fixed to the upper flanges of the unequal-legged angle steel 305. The prefabricated precast concrete floor 301, with pre-reserved openings at the ends of the high-strength bolt rods, is placed on top of the prefabricated precast concrete floor 301. The high-strength bolt rods, washers, and nuts connect the prefabricated precast concrete floor 301 and the prefabricated steel flat beam 303 together. After the prefabricated concrete floor slab 301 and the prefabricated steel flat beam 303 are positioned and connected by the threaded shear fasteners 306, fiber-reinforced high-strength concrete is poured a second time in the gaps in the prefabricated floor slab concrete at the connection position, thereby forming a connection structure between the prefabricated floor slab and the prefabricated steel flat beam.

[0041] The composite wall combination connection system in this embodiment includes precast ceramsite concrete wall panels A401, precast ceramsite concrete wall panels B403, splicing parts 402, frame beams and columns 404, wherein the wall panels can be prefabricated in a factory, and the frame beams and columns 404 are both pre-set with C-shaped steel positioning grooves. After the precast ceramsite concrete wall panels A401 and precast ceramsite concrete wall panels B403 are transported to the site, they are hoisted to the top of the frame beams and columns 404 using a hoist, and are precisely positioned and connected to the frame beams and columns 404 through the C-shaped steel positioning grooves; specifically, the sides of the precast ceramsite concrete wall panels A401 and precast ceramsite concrete wall panels B403 are both provided with insertion grooves, and adjacent wall panels are connected by splicing parts 402.

[0042] In order to further better explain the above embodiment, the present invention also provides a method for connecting a flat beam-wall panel column structure combined steel frame, comprising the following steps:

[0043] S1: Connect the steel beam 101, the upper steel column 102, and the lower steel column 103 together through the combined connector 104 and the high-strength bolt group 202;

[0044] S2: Pre-embed bolt holes in the prefabricated concrete floor 301, and positionally connect the prefabricated concrete floor 301 to the prefabricated steel flat beam 303 through vertical pre-welded studs 304, unequal angle steels 305, and threaded shear fasteners 306;

[0045] S3: Insertion grooves are left on the sides of the precast ceramsite concrete wall panel A401 and the precast ceramsite concrete wall panel B403, and adjacent wall panels are connected by splicing pieces 402;

[0046] S4: After all wall panels are installed in place, use expansive concrete to seal the gaps between adjacent wall panels, between wall panels and frame beams, and between wall panels and columns, and fix sound insulation panels on the side walls on one side of the wall panels to improve the sound insulation effect.

[0047] In summary, the present invention provides a flat beam-wall panel column structure combined steel frame connection structure and method. The steel columns and steel flat beams in the column-column and beam-column combined connection system are prefabricated in the factory using hot-rolled steel sections. After being transported to the site, they are connected by combined connectors 104 and high-strength bolt groups 202. The beam-slab structure combined connection system tightly connects the prefabricated floor slab and steel flat beams through steel beam embedded parts, floor slab reserved steel bars, threaded shear fasteners 306 and part of cast-in-place concrete, so that the two can bear force together and deform in coordination. The modular wall of the composite wall combined connection system is composed of ceramsite concrete filling material and wall panel skeleton, which is connected to the steel flat beam and multifunctional embedded parts on the steel columns. Adjacent composite walls are connected by mortise and tenon joints on the cold-bent thin-walled steel sections at both ends. The present invention has a novel design and a simple structure. All components can be prefabricated in advance in the factory and a small amount of cast-in-place and bolt connection is performed after arriving at the site. The present invention fully meets the overall force, energy saving, earthquake resistance and other requirements of modern prefabricated building systems, and can significantly improve construction efficiency, ensure construction quality and reduce construction measures costs.

[0048] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A flat beam-wall panel column structure combined steel frame connection structure, characterized in that: Including column-column and beam-column combined connection systems, beam-slab structure combined connection systems and composite wall combined connection systems; The column-column and beam-column combined connection system is connected via a combined connection piece (104) and a high-strength bolt group (202), wherein the combined connection piece (104) is welded from a lower outward-extending end plate (203) of a C-shaped steel and two angle steels (201), wherein the vertical plate of the angle steel (201) is connected to the web of the steel beam (101) via high-strength bolts, and the transverse plate of the angle steel (201) and the lower outward-extending end plate (203) of the C-shaped steel are connected to the upper and lower flanges of the steel beam (101); The beam-slab structure combined connection system is composed of an assembled precast concrete floor slab (301), a precast steel flat beam (303), and cast-in-situ concrete between the beam and slab. The lower flange of the precast steel flat beam (303) is welded with an unequal angle steel (305) in the factory. A steel mesh (302) is arranged in the assembled precast concrete floor slab (301). Vertical pre-welded bolts (304) are welded to the lower side of the precast steel flat beam (303). Bolt holes are embedded in the assembled precast concrete floor slab (301), and the assembled precast concrete floor slab (301) and the precast steel flat beam (303) are positioned and connected by threaded shear fasteners (306). The composite wall assembly connection system comprises a prefabricated ceramsite concrete wall panel A (401), a prefabricated ceramsite concrete wall panel B (403), a splicing piece (402), a frame beam and a column (404), wherein the frame beam and the column (404) are both pre-reserved with a C-shaped steel positioning groove. After the prefabricated ceramsite concrete wall panel A (401) and the prefabricated ceramsite concrete wall panel B (403) are transported to the site, they are hoisted to the top of the frame beam and the column (404) using a hoist, and are precisely positioned and connected to the frame beam and the column (404) through the C-shaped steel positioning groove.

2. The flat beam-wall panel column structure combined steel frame connection structure according to claim 1, characterized in that: The C-shaped steel web and flange are used as connectors between the upper steel column (102) and the lower steel column (103).

3. The flat beam-wall panel column structure combined steel frame connection structure according to claim 1, characterized in that: The threaded shear fastener (306) comprises a high-strength bolt rod, a washer and a nut. The head of the high-strength bolt rod is fixed on the upper flange of the unequal-leg angle steel (305). The assembled precast concrete floor slab (301) with a reserved opening at the end of the high-strength bolt rod is placed on it. The assembled precast concrete floor slab (301) is connected to the precast steel flat beam (303) through the high-strength bolt rod, the washer and the nut.

4. The flat beam-wall panel column structure combined steel frame connection structure according to claim 3, characterized in that: The height of the unequal-leg angle steel (305) is determined by deducting the thickness of the assembled prefabricated concrete floor slab (301) from the height of the prefabricated steel flat beam (303).

5. The flat beam-wall panel column structure combined steel frame connection structure according to claim 1, characterized in that: Insertion grooves are left on the sides of the prefabricated ceramsite concrete wall panel A (401) and the prefabricated ceramsite concrete wall panel B (403), and adjacent wall panels are connected by splicing pieces (402).

6. A method for connecting a flat beam-wall panel column structure combined steel frame, based on the flat beam-wall panel column structure combined steel frame connection structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Connecting the steel beam (101), the upper steel column (102), and the lower steel column (103) together through a combined connector (104) and a high-strength bolt group (202); S2: pre-embed bolt holes in the prefabricated concrete floor slab (301), and positionally connect the prefabricated concrete floor slab (301) and the prefabricated steel flat beam (303) by means of vertical pre-welded studs (304), unequal angle steels (305), and threaded shear fasteners (306); S3: Insertion grooves are left on the sides of the prefabricated ceramsite concrete wall panel A (401) and the prefabricated ceramsite concrete wall panel B (403), and adjacent wall panels are connected by a splicing piece (402); S4: After all wall panels are installed in place, use expansive concrete to seal the gaps between adjacent wall panels, between wall panels and frame beams, and between wall panels and columns, and fix sound insulation panels on the side walls on one side of the wall panels to improve the sound insulation effect.

7. The method for connecting a flat beam-wall panel column structure composite steel frame according to claim 1, wherein: The unequal angle steel (305) and the prefabricated steel flat beam (303) in S2 form a functional area for arranging water, electricity and heating pipelines.

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