Large-span composite floor double-column structure

Abstract

The utility model discloses a kind of large-span combined floor double-leg column structures, comprising: space steel truss, by steel structure welding constitutes space three-dimensional structure;Leg column, be set to space steel truss both sides for supporting space steel truss, and space steel truss each side is provided with two groups of leg column in pairs;Concrete floor, anchoring installation is in space steel truss top.The utility model relates to the technical field of building structure.This large-span combined floor double-leg column structure, this system combines space steel truss with concrete floor, improves the overall stiffness of floor, adopts double-leg column, improves system lateral stiffness, while space steel truss is connected in both directions with triangular layout support frame and is supported, effectively improves support strength in each direction, so that the structural system has the characteristics of light large-span, good integrity and stability, and excellent performance under bidirectional seismic action.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, specifically to a large-span composite floor slab double-column structure. Background Technology

[0002] With economic and social development, in order to meet the functionality and aesthetics of buildings, the demand for large-span and irregular structures is increasing, which greatly increases the difficulty of building structural design.

[0003] Large-span, irregular structures are prone to severe damage under seismic torsional forces, and traditional structural systems often struggle to balance large-span spatial arrangements with seismic fortification requirements. Therefore, there is an urgent need for a floor system with good overall integrity and flexible layout that can achieve large-span, irregular structural shapes while meeting seismic fortification requirements. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a large-span composite floor slab double-column structure, which solves the problem that existing large-span, irregular steel structures cannot simultaneously meet the requirements of large-span spatial layout and seismic fortification.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-span composite floor slab double-column structure, comprising:

[0006] Space steel trusses are three-dimensional spatial structures formed by welding steel structures.

[0007] Limbs are set on both sides of the space steel truss to support the space steel truss, and two sets of limbs are set in pairs on each side of the space steel truss;

[0008] Concrete floor slabs, anchored to the top of the space steel truss;

[0009] The spatial steel truss includes multiple sets of main support trusses arranged in parallel, and adjacent main support trusses are connected by connecting trusses.

[0010] Preferably, the main support truss includes upper and lower sets of chords, and multiple web members are connected in parallel between the upper and lower sets of chords through nodes. A first support frame is also connected between the chords and the web members.

[0011] Preferably, the first support frame is installed obliquely to form a triangular structure between the chord and the web member.

[0012] Preferably, the connecting truss includes two rows of connecting beams, which are connected between nodes, and also includes a second support frame diagonally connected between the main support trusses.

[0013] Preferably, the second support frame is welded between the middle sections of two diagonally opposite chord members or between the diagonally opposite web members.

[0014] Preferably, the web member is type II, and the adjacent second support frames and the first support frames are connected by connecting sleeves sleeved on the web member. The connecting sleeves are not welded to the surface of the web member.

[0015] Preferably, the web member is composed of two sets of symmetrically arranged U-shaped sleeves, and one side of the U-shaped sleeve is provided with a plug that can be inserted into the node. The front and rear sides of the U-shaped sleeve are provided with semi-circular openings, and the positioning pins that pass through the semi-circular openings and the web member are used to prevent the U-shaped sleeve from detaching from the node.

[0016] Preferably, adjacent second support frames are arranged in opposite directions and staggered.

[0017] Beneficial effects

[0018] This utility model provides a large-span composite floor slab with double-column structure. Compared with the prior art, it has the following advantages:

[0019] 1. This large-span composite floor slab with double-limb columns combines a spatial steel truss with a concrete floor slab, improving the overall stiffness of the floor slab. The use of double-limb columns enhances the lateral stiffness of the system. Meanwhile, the spatial steel truss is connected and supported by triangular support frames in both directions, effectively improving the support strength in all directions. This results in a structural system that is lightweight with a large span, good integrity and stability, and excellent performance under bidirectional seismic loading.

[0020] 2. This large-span composite floor slab double-column structure is designed with a connecting sleeve to connect the second support frame, so that both the second and first support frames can be directly installed on the web members by sleeve, reducing the amount of welding work and making it more convenient to disassemble later. At the same time, the force of the connecting sleeve is applied to the node, which does not affect the longitudinal bearing capacity.

[0021] 3. This large-span composite floor slab double-column structure, by splitting the connecting sleeve into two long parts and setting an insert at the bottom, can directly fit the web member from the side and slide it into the node, without having to start from the end of the web member to fully fit it in, and only one positioning pin is needed to lock it, further increasing the difficulty of installation and disassembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of a partial structure of the space steel truss of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection between the connecting truss and the web member in Embodiment 2 of this utility model;

[0025] Figure 4This is an exploded view of the connection between the connecting truss and the web member in Embodiment 2 of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection between the connecting truss and the web member in Embodiment 3 of this utility model.

[0027] In the diagram: 1-Space steel truss, 11-Main support truss, 111-Chord, 112-Node, 113-Web member, 114-First support frame, 12-Connecting truss, 121-Connecting beam, 122-Second support frame, 123-Connecting sleeve, 124-Insertion block, 125-Semicircular opening, 126-Positioning pin, 2-Column, 3-Concrete floor slab. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides three technical solutions:

[0030] Figures 1-2 The first embodiment is shown: a large-span composite floor slab double-column structure, comprising:

[0031] Space steel truss 1 is a three-dimensional spatial structure constructed by welding steel structures. The steel structures are made of box-shaped steel or H-shaped steel.

[0032] Limb 2, double limb 2 extended corbels, rigidly connected to the space steel truss 1, set on both sides of the space steel truss 1 to support the space steel truss 1, and two sets of limb 2 are set in pairs on each side of the space steel truss 1;

[0033] The concrete floor slab 3 is anchored to the top of the space steel truss 1. The concrete floor slab 3 is a slotted concrete composite slab, which is connected to the space truss 1 through shear connectors to form a composite structural system, which can improve the rigidity of the composite floor slab.

[0034] The space steel truss 1 includes multiple sets of main support trusses 11 arranged in parallel, and adjacent main support trusses 11 are connected by connecting trusses 12.

[0035] The main support truss 11 includes two sets of upper and lower chords 111, and multiple web members 113 are connected in parallel between the two sets of chords 111 through nodes 112. A first support frame 114 is also connected between the chords 111 and the web members 113. The first support frame 114 is installed obliquely to form a triangular structure between the chords 111 and the web members 113.

[0036] The connecting truss 12 includes two rows of connecting beams 121, which are connected between nodes 112. It also includes a second support frame 122 that is diagonally connected between the main support trusses 11.

[0037] The second support frame 122 is welded between the middle sections of the two diagonally opposite chord members 111 or between the diagonally opposite web members 113.

[0038] This system combines a spatial steel truss 1 with a concrete floor slab 3, which improves the overall stiffness of the floor. It uses double-limb columns 2 to improve the lateral stiffness of the system. At the same time, the spatial steel truss 1 is connected and supported by triangular support frames in both directions, which effectively improves the support strength in all directions. This makes the structural system lightweight with large span, good integrity and stability, and excellent performance under bidirectional seismic loading.

[0039] Figures 3-4 The second embodiment is shown. The main difference from the first embodiment is that the web member 113 is type II. The adjacent second support frame 122 and the first support frame 114 are connected by a connecting sleeve 123 sleeved on the web member 113. The connecting sleeve 123 is not welded to the surface of the web member 113.

[0040] The design of the connecting sleeve 123 connects the second support frame 122, so that both the second support frame 122 and the first support frame 114 can be directly installed on the web member 113 by sleeve, which reduces the amount of welding work and is more convenient when disassembly is required later. At the same time, the force of the connecting sleeve 123 is applied to the node 112, which does not affect the longitudinal bearing capacity.

[0041] Figure 5 The third embodiment is shown. The main difference from the second embodiment is that the connecting sleeve 123 is composed of two sets of U-shaped sleeves arranged symmetrically. One side of the U-shaped sleeve is provided with a plug 124 that can be inserted into the node 112. Semicircular openings 125 are provided on both the front and rear sides of the U-shaped sleeve. The positioning pin 126 passing through the semicircular opening 125 and the web rod 113 restricts the U-shaped sleeve from leaving the node 112. The positioning pin 126 inserted into the semicircular opening 125 can restrict the longitudinal movement of the U-shaped sleeve, thereby restricting the plug 124 from sliding out of the node 112.

[0042] The adjacent second support frames 122 are arranged in opposite directions and staggered, so that the adjacent second support frames 122 are in a cross structure on the same plane.

[0043] By splitting the connecting sleeve 123 into two long parts and setting the insert block 124 at the bottom, the web rod 113 can be directly sleeved from the side and slid into the node 112 without having to fully sleeve it from the end of the web rod 113. Furthermore, it can be locked with just one positioning pin 126, which further increases the difficulty of installation and disassembly.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-span composite floor slab with double-column structure, characterized in that: include: Space steel trusses are three-dimensional spatial structures formed by welding steel structures. Limbs are set on both sides of the space steel truss to support the space steel truss, and two sets of limbs are set in pairs on each side of the space steel truss; Concrete floor slabs, anchored to the top of the space steel truss; The spatial steel truss includes multiple sets of main support trusses arranged in parallel, and adjacent main support trusses are connected by connecting trusses.

2. The large-span composite floor slab double-column structure according to claim 1, characterized in that: The main support truss includes two sets of upper and lower chords, and multiple web members are connected in parallel between the upper and lower chords through nodes. A first support frame is also connected between the chords and the web members.

3. The large-span composite floor slab double-column structure according to claim 1, characterized in that: The first support frame is installed obliquely to form a triangular structure between the chord and the web member.

4. The double-column structure of a large-span composite floor slab according to claim 1, characterized in that: The connecting truss includes two rows of connecting beams, which are connected between nodes, and also includes a second support frame that is diagonally connected between the main support trusses.

5. A large-span composite floor slab double-column structure according to claim 1, characterized in that: The second support frame is welded between the middle sections of two diagonally opposite chord members or between the diagonally opposite web members.

6. The double-column structure of a large-span composite floor slab according to claim 1, characterized in that: The web member is type II. The adjacent second support frames and the first support frames are connected by connecting sleeves sleeved on the web member. The connecting sleeves are not welded to the surface of the web member.

7. A large-span composite floor slab double-column structure according to claim 1, characterized in that: The web member is composed of two sets of symmetrically arranged U-shaped sleeves, and one side of the U-shaped sleeve is provided with a plug that can be inserted into the node. The front and rear sides of the U-shaped sleeve are provided with semi-circular openings, and the positioning pins that pass through the semi-circular openings and the web member are used to prevent the U-shaped sleeve from detaching from the node.

8. A large-span composite floor slab double-column structure according to any one of claims 4-7, characterized in that: The adjacent second support frames are arranged in opposite directions and staggered.

Images