A connection structure between a steel structure and a precast concrete slab

Abstract

This invention discloses a connection structure between a steel structure and a precast concrete slab, comprising: two steel structures, vertically arranged relative to each other, each steel structure being column-shaped with its upper end face recessed downwards to form an L-shaped receiving groove, the two L-shaped receiving grooves being arranged opposite each other to form an open receiving space; a precast concrete slab, horizontally secured within the receiving space; two support blocks protruding upwards from the bottom of the L-shaped receiving grooves, the two support blocks being spaced apart and forming a securing space in the middle, the precast concrete slab being supported on the two support blocks; and several buffer members disposed within the securing space between the two support blocks, arranged along the width direction of the precast concrete slab; the connection structure between the steel structure and the precast concrete slab of this invention has good seismic resistance.

Description

Technical Field

[0001] This invention relates to the field of connecting steel structures and precast concrete slabs. More specifically, this invention relates to a connection structure for steel structures and precast concrete slabs. Background Technology

[0002] Prefabricated construction refers to transferring a large amount of on-site work from traditional construction methods to factories. Building components and accessories are prefabricated in factories, transported to the construction site, and assembled on-site using reliable connection methods. It has a series of advantages, such as less on-site wet work, shorter construction period, and better economic efficiency. The combination of concrete and steel structures, as one of the forms of prefabricated buildings, has been widely used in various large buildings. For example, the combination of precast concrete slabs and steel structures usually adopts the construction of stud connectors, which basically has no seismic design and has poor resistance to natural disasters such as earthquakes. Summary of the Invention

[0003] To achieve these objectives and other advantages according to the invention, a preferred embodiment of the invention provides a connection structure between a steel structure and a precast concrete slab, comprising: Two steel structures are vertically arranged opposite each other. The steel structures are column-shaped, and the upper part of the steel structure is recessed downward to form an L-shaped receiving groove. The two L-shaped receiving grooves of the steel structures are arranged opposite each other to form an open receiving space. The precast concrete slab is horizontally positioned within the receiving space, and both ends of the precast concrete slab along its length are placed in two L-shaped receiving grooves of steel structure. The bottom of the L-shaped receiving groove protrudes upward to form two support blocks. The two support blocks are spaced apart and a locking space is formed in the middle. The precast concrete slab is supported on the two support blocks. A buffer element is disposed in the locking space between the two support blocks. There are several buffer elements, which are arranged along the width direction of the precast concrete slab.

[0004] Preferably, the buffer includes: The first support column is vertically arranged, and one end of the first support column is connected to the bottom surface of the precast concrete slab. The first spring has one end connected to the other end of the first support column and the other end connected to the horizontal surface of the L-shaped receiving groove of the steel structure. The second support cylinder is vertically arranged and hollow inside. One end of the second support cylinder is connected to the horizontal surface of the L-shaped receiving groove of the steel structure. The first support column and the first spring are both vertically coaxial with the second support cylinder, and both the first support column and the first spring can extend vertically into the second support cylinder.

[0005] Preferably, the first support column has a plurality of first limiting blocks circumferentially arranged on its side, and the second support cylinder has a plurality of first limiting blocks circumferentially arranged on its side. A second limiting block is provided, and the first limiting block and the second limiting block are adapted to form a limiting device.

[0006] Preferably, the first support column is made of cast concrete.

[0007] Preferably, the horizontal surface of the L-shaped receiving groove is provided with a sliding groove along the width direction of the precast concrete slab, and a stop block is fixedly provided at intervals on the sliding groove. The stop block can resist a preset thrust. When encountering a thrust greater than the preset value, the stop block will be pushed. The buffer also includes: The support diagonal rod has one end hinged to the side wall of the first support column, and the other end slidably supported in the groove, and is located between two adjacent stops.

[0008] Preferably, the first limiting block includes: A connecting rod, one end of which is hinged to the side wall of the first support column, is inclined upwards; The second spring is horizontally arranged, with one end connected to the side wall of the first support column and the other end connected to the connecting rod; The second limiting block is annular with a right-angled triangle cross-section, one of which is connected to the inner wall of the second support cylinder. When the second spring is in its natural extended state, the inclined side of the support rod and the inclined side of the second limiting block are parallel.

[0009] The present invention has at least the following beneficial effects: the connection structure between the steel structure and the precast concrete slab of the present invention has a better shockproof effect. The present invention uses two support blocks on the L-shaped receiving groove of the two steel structures to support and place the precast concrete slab, and also uses a buffer to support the precast concrete slab. When external vibration occurs, once the support block is damaged, the buffer can also play a certain buffering and supporting role.

[0010] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the connection structure between the steel structure and the precast concrete slab in this invention.

[0012] Figure 2 This is a schematic diagram of the buffer component in this invention; Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0013] Reference numerals in the attached drawings: 1. Steel structure; 1-1. L-shaped receiving groove; 1-2. Support block; 1-3. Stop block; 2. Precast concrete slab; 3. Buffer component; 3. First support column; 3-1. First spring; 3-2. Second support cylinder; 3-3. First limiting block; 3-4. Second limiting block; 3-5. Supporting diagonal rod; 3-6. Connecting rod; 3-4-1. Second spring; 3-4-2. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0015] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0016] like Figure 1-3 As shown, a preferred embodiment of the present invention provides a connection structure between a steel structure and a precast concrete slab, comprising: Two steel structures 1 are vertically arranged opposite each other. The steel structure 1 is column-shaped. The upper end of the steel structure 1 is recessed downward to form an L-shaped receiving groove 1-1. The L-shaped receiving grooves 1-1 of the two steel structures 1 are arranged opposite each other to form an open receiving space. The precast concrete slab 2 is horizontally positioned within the receiving space, and both ends of the precast concrete slab 2 along its length are respectively placed in the L-shaped receiving grooves 1-1 of the two steel structures 1. The bottom of the L-shaped receiving groove 1-1 protrudes upward to form two support blocks 1-2. The two support blocks 1-2 are spaced apart, forming a locking space in the middle. The precast concrete slab 2 is mounted on the two support blocks 1-2. A buffer element 3 is disposed in the locking space between the two support blocks 1-2. There are several buffer elements 3, which are arranged along the width direction of the precast concrete slab 2.

[0017] In the above technical solution, the precast concrete slab 2 is supported and placed using two support blocks 1-2 on the L-shaped receiving groove 1-1 of the two steel structures 1, and the precast concrete slab 2 is also supported by the buffer 3. When external vibration occurs, if the support block 1-2 is damaged, the buffer 3 can also play a certain buffering and supporting role.

[0018] Another technical solution provides a specific structure for the buffer, wherein the buffer 3 includes: The first support column 3-1 is vertically arranged, and one end of the first support column 3-1 is connected to the bottom surface of the precast concrete slab 2. The first spring 3-2 has one end connected to the other end of the first support column 3-1, and the other end connected to the horizontal surface of the L-shaped receiving groove 1-1 of the steel structure 1; The second support cylinder 3-3 is vertically arranged and hollow inside. One end of the second support cylinder 3-3 is connected to the horizontal surface of the L-shaped receiving groove 1-1 of the steel structure 1. The first support column 3-1 and the first spring 3-2 are both vertically coaxial with the second support cylinder 3-3, and both the first support column 3-1 and the first spring 3-2 can extend vertically into the second support cylinder 3-3.

[0019] In the above technical solution, normally the first support column 3-1 is supported by the first spring 3-2 on the L-shaped receiving groove 1-1 of the steel structure 1, thereby supporting the precast concrete slab. Once the support block 1-2 is damaged, it will not be able to withstand the weight of the precast concrete slab, and the precast concrete slab will be pressed further downward, causing the first support column 3-1 to move downward. The first spring 3-2 will be compressed, generating elastic force, thereby playing a certain rebound buffering role on the precast concrete slab.

[0020] In another technical solution, the first support column 3-1 is provided with a plurality of first limiting blocks 3-4 circumferentially on its side. The second support cylinder is provided with a second limiting block on its side. The first limiting block 3-4 and the second limiting block 3-5 are matched to form a limiting lock. In this way, when the support block 1-2 is damaged and the precast concrete slab will be pressed down further, the first limiting block 3-4 will lock and limit the second limiting block 3-5, thereby splicing the first support column and the second support column together to form a whole and improving the support for the precast concrete slab.

[0021] In another technical solution, the first support column 3-1 is made of concrete, and it can be cast as a whole with the precast concrete slab, resulting in better stability.

[0022] In another technical solution, to further improve the buffering capacity of the buffer member in the face of pressure impact, the horizontal surface of the L-shaped receiving groove 1-1 is provided with a groove along the width direction of the precast concrete slab 2. Stops 1-3 are fixedly arranged at intervals on the groove. The stops 1-3 can resist a preset thrust. When encountering a thrust greater than the preset value, the stops 1-3 will be pushed. The buffer member 3 also includes: The supporting diagonal rod 3-6 has one end hinged to the side wall of the first supporting column, and the other end slidably supported in the groove, and is located between two adjacent stops 1-3.

[0023] In the above technical solution, when the precast concrete slab 2 is pressed downward, the two supporting diagonal rods 3-6 will slide to the left and right sides respectively, playing a buffering role. When the external pressure is too great, the supporting diagonal rods 3-6 will push the stop block 1-3. At this time, the first spring 3-3 will be compressed to the minimum value. At this time, the first limiting block 3-4 on the first supporting column 3-1 will be locked into the second limiting block 3-5 of the second supporting cylinder 3-3, thereby splicing the first supporting column and the second supporting column together to form a whole, which together supports the precast concrete slab, and the support strength is higher.

[0024] In another technical solution, the first limiting block 3-4 includes: The connecting rod 3-4-1 has one end hinged to the side wall of the first support column 3-1, and the connecting rod 3-4-1 is inclined upward; The second spring 3-4-2 is horizontally arranged. One end of the second spring 3-4-2 is connected to the side wall of the first support column 3-1, and the other end is connected to the connecting rod 3-4-1. The second limiting block 3-5 is annular, with a cross-section of a right triangle, one of which is connected to the inner wall of the second support cylinder 3-3. When the second spring 3-4-2 is in its natural extended state, the inclined side of the support rod 3-6 and the inclined side of the second limiting block 3-5 are parallel.

[0025] In the above technical solution, when the precast concrete slab 2 is pressed downward, the connecting rod 3-4-1 will be squeezed and folded inward, and the second spring 3-4-2 will also be compressed. When the first support column 3-1 extends into the second support cylinder 3-3 and enters below the second limiting block 3-5, the compression of the second limiting block 3-5 will be removed, and the second spring 3-4-2 will rebound instantly. Then the connecting rod 3-4-1 will be locked below the second limiting block 3-5, thereby splicing the first support column and the second support column together to form a whole.

[0026] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A connection structure between a steel structure and a precast concrete slab, characterized in that, include: Two steel structures are vertically arranged opposite each other. The steel structures are column-shaped, and the upper part of the steel structure is recessed downward to form an L-shaped receiving groove. The two L-shaped receiving grooves of the steel structures are arranged opposite each other to form an open receiving space. The precast concrete slab is horizontally positioned within the receiving space, and both ends of the precast concrete slab along its length are placed in two L-shaped receiving grooves of steel structure. The bottom of the L-shaped receiving groove protrudes upward to form two support blocks. The two support blocks are spaced apart and a locking space is formed in the middle. The precast concrete slab is supported on the two support blocks. A buffer element is disposed within the locking space between the two support blocks. Several buffer elements are arranged along the width direction of the precast concrete slab. Each buffer element includes a first support column, vertically arranged, with one end connected to the bottom surface of the precast concrete slab; a first spring, one end connected to the other end of the first support column, and the other end connected to the horizontal surface of the L-shaped receiving groove of the steel structure; and a second support cylinder, vertically arranged and hollow inside, with one end connected to the horizontal surface of the L-shaped receiving groove of the steel structure. The first support column, the first spring, and the second support cylinder are all vertically coaxial, and both the first support column and the first spring can extend vertically into the second support cylinder. The first support column is provided with a plurality of first limiting blocks circumferentially on its side, and the second support cylinder is provided with a second limiting block on its side. The first limiting blocks and the second limiting blocks are adapted to each other to form a limiting and locking mechanism. The first support column is made of concrete. The horizontal surface of the L-shaped receiving groove is provided with a sliding groove along the width direction of the precast concrete slab. The sliding groove is fixedly provided with stops at intervals. The stops can resist a preset thrust. When encountering a thrust greater than the preset value, the stops will be pushed. The buffer also includes a support diagonal rod, one end of which is hinged to the side wall of the first support column, and the other end can be slidably supported on the sliding groove and is located between two adjacent stops. The first limiting block includes: a connecting rod, one end of which is hinged to the side wall of the first support column, the connecting rod being inclined upward; a second spring, which is horizontally arranged, one end of the second spring being connected to the side wall of the first support column, and the other end being connected to the connecting rod; wherein, the second limiting block is annular, its cross-section is a right-angled triangle, one right-angled side of which is connected to the inner side wall of the second support cylinder; when the second spring is in a naturally extended state, the support inclined rod and the inclined side of the second limiting block are parallel.

Images