Prestressed concrete double-t beam joint dry connection structure

Abstract

The utility model discloses a kind of dry-type connecting structure of pre-stressed concrete double T plate joint, it is related to double T plate joint connecting technical field, including T-shaped plate body, the plate body formed by concrete and steel reinforcement framework overall prefabrication and the two support beams of being set in plate body lower surface are formed, and overall section is double T type;It further includes splicing assembly, splicing assembly is used to adjacent pre-stressed concrete double T plate joint alignment connection, to ensure the stability of connection;Splicing assembly includes: connecting block, detachably set in the reserved slot of T-shaped plate body, the inner wall of connecting block is slidably connected with limiting rod.The utility model utilizes the limiting rod of being inserted into the reserved slot of adjacent pre-stressed concrete double T plate simultaneously to realize splicing effect, and connecting block connected with limiting rod can be position-locked by bolt, to realize the double fixing to adjacent pre-stressed concrete double T plate surface and inside, and then improve the stability when adjacent pre-stressed concrete double T plate is connected.

Description

Technical Field

[0001] This utility model relates to the field of double-T plate splicing technology, specifically a dry splicing structure for prestressed concrete double-T plate splices. Background Technology

[0002] Double-T slabs are precast reinforced concrete load-bearing components that combine slabs and beams. They consist of a wide panel and two narrow, tall ribs. The panel serves as both a transverse load-bearing structure and the compression zone of the longitudinal load-bearing ribs.

[0003] Traditional construction methods for splicing prestressed concrete double-T slabs typically involve suspended formwork and mortar grouting. However, the mortar is difficult to compact and achieve the required strength, and subsequent formwork removal is challenging. Furthermore, the large span and low rigidity of double-T slabs mean that the grouting mortar is prone to cracking and detachment under long-term exposure to thermal stress and shrinkage cracks, posing safety hazards and resulting in weak connections. Therefore, we propose a dry-joint structure for prestressed concrete double-T slab splicing to address these issues. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dry connection structure for the joint of prestressed concrete double T-plates. This device can achieve dual fixation of the surface and interior of adjacent prestressed concrete double T-plates, thereby improving the stability of the connection between adjacent prestressed concrete double T-plates.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry connection structure for prestressed concrete double-T slab joints, comprising: The T-shaped slab body is composed of a slab body prefabricated from concrete and steel reinforcement skeleton as a whole, and two supporting beams set on the lower surface of the slab body, and the overall cross section is double T-shaped. It also includes splicing components, which are used for aligning and connecting the joints of adjacent prestressed concrete double-T slabs to ensure connection stability; The splicing components include: A connecting block is detachably installed in a pre-reserved groove on the T-shaped plate body. A limit rod is slidably connected to the inner wall of the connecting block, and the limit rod is slidably connected to the T-shaped plate body. A return spring is fixedly connected to the inner wall of the connecting block, and the return spring is fixed to the limit rod. The first reserved hole is opened on the outer surface of the connecting block, and the T-shaped plate body is provided with a corresponding second reserved hole; A connecting plate is installed between adjacent limiting rods, and the limiting rods are fixed to the connecting plate.

[0006] Furthermore, the inner wall of the T-shaped plate body is slidably connected with four H-shaped blocks, and the front and back of the T-shaped plate body are provided with first reserved grooves that are adapted to the H-shaped blocks at the corresponding positions. By sliding the H-shaped blocks into the first reserved grooves opened on the adjacent prestressed concrete double T plates, the splicing of adjacent prestressed concrete double T plates can be realized.

[0007] Furthermore, the inner wall of the T-shaped plate body is slidably connected with four plug-in blocks, and one side and the other side of the T-shaped plate body are provided with a second reserved groove that matches the plug-in block at the corresponding position. By setting the plug-in block and the second reserved groove, adjacent prestressed concrete double T plates can be spliced ​​together, thereby further improving the connection stability.

[0008] Furthermore, each of the plug-in blocks has a third reserved hole on its outer surface, and the upper surface of the T-shaped plate body has a fourth reserved hole that matches the third reserved hole at the corresponding position. By setting the third and fourth reserved holes, a pin can be inserted to limit and fix the plug-in block, thereby further improving the stability of the splicing of adjacent prestressed concrete double T plates.

[0009] Furthermore, the inner wall of the T-shaped plate body is inlaid with four threaded cylinders arranged symmetrically in pairs. The inner wall of each threaded cylinder is threadedly connected with a threaded lifting ring for hoisting the prestressed concrete double T-plate. By setting the threaded cylinders and threaded lifting rings, the prestressed concrete double T-plate can be hoisted conveniently and can be disassembled after hoisting without the need to use corresponding cutting tools to cut the threaded lifting rings.

[0010] Furthermore, a reinforcing rib is fixedly connected between the two supporting beams, and the upper surface of the reinforcing rib is fixedly connected to the bottom surface of the plate.

[0011] Furthermore, the reinforcing rib is a non-prestressed concrete structure or a prestressed concrete structure.

[0012] Furthermore, the included angle between the plate wing formed at the junction of the support beam and the plate body ranges from 10° to 45°.

[0013] Compared with existing technologies, this prestressed concrete double-T slab joint dry connection structure has the following advantages: 1. This utility model utilizes limiting rods inserted simultaneously into the reserved grooves of adjacent prestressed concrete double T plates to achieve a splicing effect. The connecting block connected to the limiting rod can be locked in position by bolts, thereby achieving double fixation of the surface and interior of adjacent prestressed concrete double T plates, thus improving the stability of the connection between adjacent prestressed concrete double T plates.

[0014] 2. This utility model, by setting H-shaped blocks and a first reserved groove, enables the splicing of adjacent prestressed concrete double-T slabs, thereby improving connection stability. By setting plug-in blocks and a second reserved groove, it enables the splicing of adjacent prestressed concrete double-T slabs, thereby further improving connection stability. By setting third and fourth reserved holes, pins can be inserted to limit and fix the plug-in blocks, thereby further improving the splicing stability of adjacent prestressed concrete double-T slabs. By setting threaded cylinders and threaded lifting rings, it is convenient to hoist the prestressed concrete double-T slabs and disassemble them after hoisting without the need to use corresponding cutting tools to cut the threaded lifting rings. By setting reinforcing ribs, it can improve the structural strength of the prestressed concrete double-T slabs. Attached Figure Description

[0015] Figure 1 This is a front view of the three-dimensional structure of this utility model; Figure 2 This is a right-side view of the three-dimensional structure of this utility model; Figure 3 This is a bottom view of the three-dimensional structure of this utility model; Figure 4 This is a partial structural cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the connection between the threaded cylinder and the threaded lifting ring of this utility model.

[0016] Figure label: 1. T-shaped panel body; 2. Splicing assembly; 3. H-shaped block; 4. First reserved slot; 201. Connecting block; 202. Limiting rod; 203. Return spring; 204. First reserved hole; 205. Second reserved hole; 206. Connecting plate; 5. Insertion block; 6. Second reserved slot; 7. Third reserved hole; 8. Fourth reserved hole; 9. Threaded cylinder; 10. Threaded lifting ring; 11. Reinforcing rib. Detailed Implementation

[0017] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0018] As described in the background art, mortar is difficult to compact and its strength is difficult to meet requirements. Later formwork removal is difficult, and the construction process is complicated. At the same time, the double-T slab has a large span and low rigidity. Under the long-term action of temperature difference stress and shrinkage cracks, the joint mortar of adjacent double-T slabs is prone to breakage and falling off, posing safety hazards and causing the connection to be unstable. Therefore, this embodiment provides a dry connection structure for the joint of prestressed concrete double-T slabs. This device can achieve double fixation of the surface and interior of adjacent prestressed concrete double-T slabs, thereby improving the stability of the connection between adjacent prestressed concrete double-T slabs.

[0019] See Figure 1 - Figure 5 This embodiment proposes a dry connection structure for prestressed concrete double T-plate splicing, which consists of several parts, including the T-shaped plate body 1 and splicing components 2.

[0020] The T-shaped slab body 1 consists of a slab precast from concrete and steel reinforcement, and two support beams set on the lower surface of the slab. The overall cross-section is double T-shaped, and the angle between the slab flange formed at the connection between the support beam and the slab body is in the range of 10°-45°.

[0021] The inner wall of the T-shaped plate body 1 is slidably connected with four H-shaped blocks 3, and the front and back of the T-shaped plate body 1 are provided with first reserved grooves 4 that are adapted to the corresponding H-shaped blocks 3. By sliding the H-shaped blocks 3 into the first reserved grooves 4 opened on the adjacent prestressed concrete double T plates, the splicing of adjacent prestressed concrete double T plates can be realized.

[0022] A reinforcing rib 11 is fixedly connected between the two supporting beams, and the upper surface of the reinforcing rib 11 is fixedly connected to the bottom surface of the slab. The structural strength of the prestressed concrete double T slab can be improved by the reinforcing rib 11 which is connected to the supporting beams and the slab respectively.

[0023] The splicing component 2 includes a connecting block 201 set in a reserved groove on the T-shaped plate body 1. A limit rod 202 is slidably connected to the inner wall of the connecting block 201, and the limit rod 202 is slidably connected to the T-shaped plate body 1. A reset spring 203 is fixedly connected to the inner wall of the connecting block 201, and the reset spring 203 is fixed to the limit rod 202.

[0024] Pulling the limiting rod 202 allows it to slide along the inner wall of the connecting block 201 and compress the return spring 203, causing it to undergo elastic deformation. After the connecting block 201 is placed in the designated position, the limiting rod 202 can be released, thereby using the reset action of the return spring 203 to drive the limiting rod 202 back to its initial position, allowing the limiting rod 202 to slide into the pre-drilled hole on the T-shaped plate body 1 to achieve the splicing of adjacent prestressed concrete double T-plates.

[0025] The inner wall of the T-shaped plate body 1 is slidably connected with four plug-in blocks 5, and one side and the other side of the T-shaped plate body 1 are provided with second reserved grooves 6 that are adapted to the plug-in blocks 5 at the corresponding positions. When splicing adjacent prestressed concrete double T plates, the second reserved groove 6 can be inserted into one of the prestressed concrete double T plate plug-in blocks 5 first, and then inserted into the other prestressed concrete double T plate plug-in block 5 to realize the splicing of adjacent prestressed concrete double T plates, thereby further improving the connection stability.

[0026] Each plug-in block 5 has a third reserved hole 7 on its outer surface, and a fourth reserved hole 8 that matches the third reserved hole 7 at the corresponding position is opened on the upper surface of the T-shaped plate body 1. After the second reserved groove 6 is inserted into the two adjacent prestressed concrete double T plates, the pin can be inserted into the third reserved hole 7 and the fourth reserved hole 8 to limit and fix the plug-in block 5, thereby further improving the splicing stability of adjacent prestressed concrete double T plates.

[0027] A connecting plate 206 is provided between adjacent limiting rods 202, and the limiting rods 202 are fixed to the connecting plate 206. The connecting plate 206 can be used to pull the adjacent limiting rods 202 to move synchronously, thereby improving the ease of splicing.

[0028] The outer surface of the connecting block 201 is provided with a first reserved hole 204, and the T-shaped plate body 1 is provided with a corresponding second reserved hole 205. By passing the bolt through the first reserved hole 204 and the second reserved hole 205 in sequence and tightening it into the T-shaped plate body 1, the connecting block 201 can be fixed and limited, thereby further improving the splicing stability of adjacent prestressed concrete double T plates.

[0029] The inner wall of the T-shaped plate body 1 is inlaid with four threaded cylinders 9 arranged symmetrically in pairs. The inner wall of each threaded cylinder 9 is threadedly connected to a threaded lifting ring 10 for hoisting the prestressed concrete double T plate. By setting the threaded cylinders 9 and the threaded lifting rings 10, the prestressed concrete double T plate can be hoisted conveniently and can be disassembled after hoisting without the need to use corresponding cutting tools to cut the threaded lifting rings 10.

[0030] The reinforcing rib 11 is a non-prestressed concrete structure or a prestressed concrete structure.

[0031] The components in the accompanying drawings of this utility model are for styling reference only and are not specific dimensional standards. The specific dimensions are determined according to the actual production requirements, and the materials of each component can be replaced accordingly based on actual needs.

[0032] Working principle: After the adjacent prestressed concrete double-T slabs are hoisted into place, the operator can simultaneously pull the two connecting plates 206 closer together, causing the limiting rod 202 to slide along the inner wall of the connecting block 201 and compress the return spring 203, causing it to elastically deform. After the connecting block 201 is placed in the designated position, the limiting rod 202 can be released, and the return spring 203 will drive the limiting rod 202 back to its initial position, allowing the limiting rod 202 to slide into the reserved hole on the T-shaped plate body 1 to achieve the splicing of adjacent prestressed concrete double-T slabs. Then, the bolts are passed through the first reserved hole 204 and the second reserved hole 205 in sequence and tightened into the T-shaped plate body 1 to achieve the limiting and fixing of the connecting block 201, thereby further improving the splicing stability of adjacent prestressed concrete double-T slabs and achieving double fixing of the surface and interior of adjacent prestressed concrete double-T slabs to ensure the stability of the connection between adjacent prestressed concrete double-T slabs.

Claims

1. A dry joint structure for a pre-stressed concrete double T slab joint, characterized by: include: The T-shaped slab body (1) is composed of a slab body formed by precast concrete and steel reinforcement skeleton as a whole, and two supporting beams set on the lower surface of the slab body, and the overall cross section is double T-shaped; It also includes a splicing component (2), which is used for the alignment and connection of adjacent prestressed concrete double T-plates to ensure connection stability; The splicing component (2) includes: The connecting block (201) is detachably installed in the reserved groove on the T-shaped plate body (1). The inner wall of the connecting block (201) is slidably connected to the limiting rod (202), and the limiting rod (202) is slidably connected to the T-shaped plate body (1). The inner wall of the connecting block (201) is fixedly connected to the return spring (203), and the return spring (203) is fixed to the limiting rod (202). The first reserved hole (204) is opened on the outer surface of the connecting block (201), and the T-shaped plate body (1) is provided with a corresponding second reserved hole (205). A connecting plate (206) is disposed between adjacent limiting rods (202), and the limiting rods (202) are fixed to the connecting plate (206).

2. The dry joint structure of a pre-stressed concrete double T slab according to claim 1, characterized in that: The inner wall of the T-shaped plate body (1) is slidably connected with four H-shaped blocks (3), and the front and back of the T-shaped plate body (1) are provided with first reserved grooves (4) that are adapted to the H-shaped blocks (3) at the corresponding positions.

3. The dry joint structure of a pre-stressed concrete double T slab according to claim 1, characterized in that: The inner wall of the T-shaped plate body (1) is slidably connected with four plug-in blocks (5), and one side and the other side of the T-shaped plate body (1) are provided with a second reserved groove (6) that matches the plug-in block (5) at the corresponding position.

4. The prestressed concrete double-T slab joint dry connection structure according to claim 3, characterized in that: Each of the plug-in blocks (5) has a third reserved hole (7) on its outer surface, and the upper surface of the T-shaped plate body (1) has a fourth reserved hole (8) that matches the third reserved hole (7) at the corresponding position.

5. The dry joint structure of a pre-stressed concrete double T slab according to claim 1, characterized in that: The inner wall of the T-shaped plate body (1) is inlaid with four threaded cylinders (9) arranged symmetrically in pairs, and the inner wall of each threaded cylinder (9) is threadedly connected with a threaded lifting ring (10) for hoisting the prestressed concrete double T plate.

6. The prestressed concrete double-T slab joint dry connection structure according to claim 1, characterized in that: A reinforcing rib (11) is fixedly connected between the two supporting beams, and the upper surface of the reinforcing rib (11) is fixedly connected to the bottom surface of the plate.

7. The dry joint structure of a prestressed concrete double T slab according to claim 6, characterized in that: The reinforcing bar (11) is a non-prestressed concrete structure or a prestressed concrete structure.

8. The dry joint structure of a pre-stressed concrete double T slab according to claim 1, characterized in that: The included angle between the flange formed at the junction of the support beam and the plate and the plate body ranges from 10° to 45°.

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