A flat beam-wall slab column structure composite steel frame connecting structure and method

Abstract

This invention discloses a composite steel frame connection structure and method for a flat beam-wall panel-column structure. In the column-column and beam-column composite connection system, the steel columns and flat beams are made of hot-rolled steel and can be prefabricated in the factory. After being transported to the site, they are connected using composite connectors and high-strength bolts. The beam-slab composite connection system tightly connects the prefabricated floor slab and flat beams through embedded parts in the steel beams, pre-reinforced steel bars in the floor slabs, threaded shear fasteners, and a portion of cast-in-place concrete, enabling both to share loads and deform collaboratively. The modular walls of the composite wall composite connection system consist of expanded clay concrete filling material and a wall skeleton, connected to the flat beams and multifunctional embedded parts on the steel columns. Adjacent composite walls are connected by mortise and tenon joints on cold-formed thin-walled steel units at both ends. This invention meets the overall load-bearing, energy-saving, and seismic resistance requirements of modern prefabricated building systems, significantly improving construction efficiency and ensuring construction quality.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building engineering technology, specifically to a flat beam-wall panel column structure combined steel frame connection structure and method. Background Technology

[0002] 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 difficulties remain in practical engineering applications, limiting their further promotion.

[0003] 1. Column-column joints and beam-column joints in steel frames are critical structural components, and their proper design directly affects the structure's load-bearing capacity, safety, and reliability. Currently, steel frame systems still suffer from problems such as complex construction of connection nodes, poor overall integrity, poor seismic performance, and lack of replaceability.

[0004] 2. During the installation of steel structure system walls, the existing wall structure design is relatively complex, and a series of problems such as connection stability gradually emerge during installation. At the same time, due to the dimensional errors of the prefabricated walls and the installation gaps, the sound insulation effect is not good.

[0005] 3. During the construction of the steel structure system, the pouring and curing of the cast-in-place slabs lag significantly behind the construction speed of the main steel frame. The two types of key components cannot be connected in the construction process, which seriously restricts the assembly and construction efficiency of the steel structure system. As a result, the advantages of steel structure buildings, such as short construction cycle and fast capital recovery, cannot be brought into play.

[0006] 4. After the precast floor slabs that have been developed are assembled and constructed, under the combined action of negative bending moment and shear stress, shear slip or premature cracking of concrete is likely to occur at the connection between the floor slab and the steel beam. This makes it difficult to realize the combined effect of the frame beam and the concrete floor slab, and reduces the integrity and load-bearing capacity of the slab structure. Summary of the Invention

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

[0008] To achieve the above objectives, the present invention provides the following technical solution:

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

[0010] The column-column and beam-column combined connection system is connected by combined connectors and high-strength bolt groups. The combined connectors are welded from the lower extended end plate of C-shaped steel and two angle steels. The vertical plates of the angle steel are connected to the web of the steel beam by high-strength bolts, and the horizontal plates of the angle steel and the lower extended end plate of C-shaped steel are connected to the upper and lower flanges of the steel beam.

[0011] The beam-slab structure combination connection system consists of precast concrete floor slabs, precast steel flat beams, and cast-in-place concrete between the beams and slabs. The lower flange of the precast steel flat beams is welded with unequal angle steel in the factory. The precast concrete floor slabs are equipped with steel mesh. The lower side of the precast steel flat beams is welded with vertical pre-welded studs. The precast concrete floor slabs are pre-embedded with bolt holes, and the precast concrete floor slabs and precast steel flat beams are positioned and connected by threaded shear fasteners.

[0012] The composite wall assembly connection system comprises precast ceramsite concrete wall panel A, precast ceramsite concrete wall panel B, assembly parts, frame beams, and columns. The frame beams and columns are all pre-reserved with C-shaped steel positioning grooves. After the precast ceramsite concrete wall panel A and precast ceramsite concrete wall panel B are transported to the site, they are hoisted above the frame beams and columns using a lifting device and precisely positioned and connected to the frame beams and columns through the C-shaped steel positioning grooves.

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

[0014] Furthermore, the threaded shear fastener includes a high-strength bolt rod, a washer, and a nut. The head of the high-strength bolt rod is fixed to the upper flange of the unequal angle steel, and a prefabricated concrete floor slab with a pre-drilled hole at the end of the high-strength bolt rod is placed on it. The prefabricated concrete floor slab is connected to the prefabricated steel flat beam by means of the high-strength bolt rod, washer, and nut.

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

[0016] Furthermore, both the precast ceramsite concrete wall panel A and the precast ceramsite concrete wall panel B have insertion grooves on their sides, and adjacent wall panels are connected by splicing components.

[0017] This invention provides another technical solution: a method for connecting a flat beam-wall panel-column composite steel frame, based on a flat beam-wall panel-column composite steel frame connection structure, comprising the following steps:

[0018] S1: Connect the steel beams, upper steel columns, and lower steel columns together using composite connectors and high-strength bolt groups;

[0019] S2: Bolt holes are pre-embedded in the precast concrete floor slab, and the precast concrete floor slab is positioned and connected to the precast steel flat beam by pre-welding vertical studs, unequal angle steel, and threaded shear fasteners.

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

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

[0022] Furthermore, the unequal angle steel and precast steel flat beams in S2 form a functional area for the arrangement of water, electricity, and heating pipelines.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[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 that can realize the rapid installation of column-column and beam-column nodes. It adopts a fully bolted assembly connection, which does not require welding on the construction site. The structure is simple, easy to install, easy to construct, low in cost, and can effectively avoid the problem of difficult to guarantee the quality of on-site welding.

[0025] 2. The flat beam-wall panel column structure and method of the present invention utilizes prefabricated floor slabs and steel flat beams, enabling rapid and flush assembly. This not only improves the stability of the flanges and webs of the steel flat beams but also reduces the floor height while maintaining equal floor heights. It satisfies the load-bearing capacity requirements of the beams and slabs, effectively controls the deflection of the horizontal structure, and improves the space utilization rate of the building.

[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 combined wall panels and splicing components. The finished wall has good thermal insulation, heat insulation, sound insulation and impact resistance performance. Moreover, all test pieces are mass-produced in the factory. The components are connected by mortise and tenon joints to achieve fully assembled construction, reduce wet work, and the wall layout is flexible and easy to install, which is conducive to building industrialization. Sound insulation panels are used to seal the gaps between adjacent wall panels to further improve the sound insulation effect. Attached Figure Description

[0027] Figure 1 This is a schematic 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 magnified view of a portion of the image;

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

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

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

[0032] Figure 6 This is a schematic 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 an exploded view of the wall panel connection structure of the present invention.

[0035] In the diagram: 101, steel beam; 102, upper steel column; 103, lower steel column; 104, combined connector; 201, angle steel; 202, high-strength bolt group; 203, lower outward end plate of C-shaped steel; 301, precast concrete floor slab; 302, steel mesh; 303, precast steel flat beam; 304, vertical pre-welded studs; 305, unequal angle steel; 306, threaded shear fasteners; 401, precast ceramsite concrete wall panel A; 402, assembly; 403, precast ceramsite concrete wall panel B; 404, frame beam and column. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-8 This invention provides a flat beam-wall panel column structure combined steel frame connection structure, including a column-column and beam-column combined connection system, a beam-panel structure combined connection system, and a composite wall combined connection system.

[0038] The column-column and beam-column combined connection system is connected by combined connectors 104 and high-strength bolt groups 202. The combined connectors 104 are welded from the lower extended end plate 203 of C-shaped steel and two angle steels 201. The vertical plates of the angle steels 201 are connected to the web of the steel beam 101 by high-strength bolts. The transverse plates of the angle steels 201 and the lower extended end plate 203 of 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 joints, the web of the secondary steel beam and the ear plate of the main steel beam can be bolted together, and the upper and lower flanges do not need to be connected. The web and flanges of the C-shaped steel 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 combination connection system consists of a precast concrete floor slab 301, a precast steel flat beam 303, and cast-in-place concrete between the beam and the 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 subtracting the thickness of the precast concrete floor slab 301 from the height of the precast steel flat beam 303. The unequal angle steel 305 and the precast steel flat beam 303 form a functional area in which water, electricity, heating and other pipelines can be arranged. The web of the angle steel can be partially perforated to allow water, electricity, heating and other pipelines to pass through.

[0040] In this embodiment, the precast concrete floor slab 301 is reinforced with a steel mesh 302. During factory processing, a concrete gap is left at the end for on-site pouring. Vertical pre-welded studs 304 are welded to the underside of the precast steel flat beam 303. Bolt holes are pre-embedded in the precast concrete floor slab 301, and the precast concrete floor slab 301 is positioned and connected to the precast steel flat beam 303 via threaded shear fasteners 306. The threaded shear fasteners 306 include a high-strength bolt rod, a washer, and a nut. The head of the high-strength bolt rod is fixed to the upper flange of the unequal angle steel 305. The precast concrete floor slab 301 with a pre-drilled hole at the end of the high-strength bolt rod is placed on it, and the precast concrete floor slab 301 is connected to the precast steel flat beam 303 via the high-strength bolt rod, washer, and nut. After the precast concrete floor slab 301 and the precast steel flat beam 303 are positioned and connected by threaded shear fasteners 306, fiber-reinforced high-strength concrete is poured a second time at the gap in the precast concrete of the floor slab at the connection point, thereby forming a connection structure between the precast floor slab and the precast steel flat beam.

[0041] The composite wall assembly connection system in this embodiment comprises precast ceramsite concrete wall panel A401, precast ceramsite concrete wall panel B403, splicing component 402, frame beams and columns 404. The wall panels can be precast in a factory. Both the frame beams and columns 404 have pre-drilled C-shaped steel positioning slots. After the precast ceramsite concrete wall panels A401 and B403 are transported to the site, they are hoisted onto the frame beams and columns 404 using a lifting device, and precisely positioned and connected to the frame beams and columns 404 through the C-shaped steel positioning slots. Specifically, both precast ceramsite concrete wall panels A401 and B403 have insertion slots on their sides, and adjacent wall panels are connected via splicing component 402.

[0042] To further illustrate the above embodiments, 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 using the combined connector 104 and the high-strength bolt group 202;

[0044] S2: Bolt holes are pre-embedded in the precast concrete floor slab 301, and the precast concrete floor slab 301 is positioned and connected to the precast steel flat beam 303 by pre-welding vertical studs 304, unequal angle steel 305, and threaded shear fasteners 306.

[0045] S3: Insertion slots are provided on the sides of precast ceramsite concrete wall panels A401 and B403, and adjacent wall panels are connected by splicing parts 402.

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

[0047] In summary, this invention provides a flat beam-wall panel column composite steel frame connection structure and method. The steel columns and flat beams in the column-column and beam-column composite connection system are prefabricated in the factory using hot-rolled steel sections. After being transported to the site, they are connected using composite connectors 104 and high-strength bolt groups 202. The beam-slab composite connection system tightly connects the prefabricated floor slab and flat beams through embedded steel beams, pre-reinforced floor slab reinforcement, threaded shear fasteners 306, and a portion of cast-in-place concrete, enabling both to share loads and deform collaboratively. The modular walls of the composite wall composite connection system consist of expanded clay concrete filling material and a wall panel skeleton, connected to the flat beams and multifunctional embedded parts on the steel columns. Adjacent composite walls are connected by mortise and tenon joints on cold-formed thin-walled steel sections at both ends. This invention features a novel design and simple structure. All components can be prefabricated in the factory, with minimal on-site casting and bolt connections. This invention fully meets the overall load-bearing, energy-saving, and seismic resistance requirements of modern prefabricated building systems, significantly improving construction efficiency, ensuring construction quality, and reducing construction costs.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flat beam-wall panel column composite steel frame connection structure, characterized in that, This includes column-column and beam-column composite connection systems, beam-slab structure composite connection systems, and composite wall composite connection systems; The column-column and beam-column combined connection system is connected by a combined connector (104) and a group of high-strength bolts (202). The combined connector (104) is welded from the lower extended end plate (203) of the 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) by high-strength bolts. The horizontal plate of the angle steel (201) and the lower extended 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 combination connection system consists of a precast concrete floor slab (301), a precast steel flat beam (303), and cast-in-place concrete between the beam and the slab. The lower flange of the precast steel flat beam (303) is welded with unequal angle steel (305) in the factory. The precast concrete floor slab (301) is provided with a steel mesh (302). The lower side of the precast steel flat beam (303) is welded with vertical pre-welded studs (304). The precast concrete floor slab (301) is pre-embedded with bolt holes, and the 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 precast ceramsite concrete wall panel A (401), precast ceramsite concrete wall panel B (403), splicing components (402), frame beams and columns (404). The frame beams and columns (404) are all pre-reserved with C-shaped steel positioning grooves. After the precast ceramsite concrete wall panel A (401) and precast ceramsite concrete wall panel B (403) are transported to the site, they are lifted by a hoisting tool to the frame beams and columns (404) and precisely positioned and connected to the frame beams and columns (404) through the C-shaped steel positioning grooves.

2. The flat beam-wall panel column structure combined steel frame connection structure as described in claim 1, characterized in that: The C-shaped steel web and flanges 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 as described in claim 1, characterized in that: The threaded shear fastener (306) includes 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 angle steel (305). The prefabricated concrete floor slab (301) with a pre-drilled hole at the end of the high-strength bolt rod is placed on it. The prefabricated concrete floor slab (301) is connected to the prefabricated steel flat beam (303) by means of the high-strength bolt rod, washer, and nut.

4. The flat beam-wall panel column structure combined steel frame connection structure as described in claim 3, characterized in that: The height of the unequal angle steel (305) is determined by subtracting the thickness of the precast concrete floor slab (301) from the height of the precast steel flat beam (303).

5. The flat beam-wall panel column structure combined steel frame connection structure as described in claim 1, characterized in that: The precast ceramsite concrete wall panel A (401) and the precast ceramsite concrete wall panel B (403) both have insertion grooves on their sides, and adjacent wall panels are connected by splicing parts (402).

6. A method for connecting a flat beam-wall panel-column composite steel frame, based on the flat beam-wall panel-column composite steel frame connection structure as described in any one of claims 1-5, characterized in that: Includes the following steps: S1: Connect the steel beam (101), the upper steel column (102), and the lower steel column (103) together using a combination connector (104) and a group of high-strength bolts (202); S2: Bolt holes are pre-embedded in the precast concrete floor slab (301), and the precast concrete floor slab (301) is positioned and connected to the precast steel flat beam (303) by pre-welding vertical studs (304), unequal angle steel (305), and threaded shear fasteners (306). S3: Insertion slots are provided on the sides of precast ceramsite concrete wall panel A (401) and precast ceramsite concrete wall panel B (403), and adjacent wall panels are connected by splicing parts (402). S4: After all wall panels are installed, use expansive concrete to seal the gaps between adjacent wall panels, between wall panels and frame beams, and between wall panels and columns. Also, fix sound insulation panels on the interior side wall of the wall panels to improve sound insulation.

7. The method for connecting a flat beam-wall panel-column composite steel frame as described in claim 6, characterized in that: In S2, the unequal angle steel (305) and the precast steel flat beam (303) form a functional area for arranging water, electricity and heating pipelines.

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