A formwork structure for pouring a joint of laminated slabs

Abstract

The utility model relates to the field of laminated slab joint pouring technology, concretely to a kind of laminated slab pouring joint formwork structure, including form, the top of form and the bottom of laminated slab main part abut, the top of pouring joint is spaced apart and is provided with multiple groups of support rod along length direction, sliding sleeve is set to the support rod on sleeve card, the bottom of sleeve card is fixedly provided with fixed rod, fixed rod side is slidably provided with connecting rod, the bottom of connecting rod is fixedly provided with fixed seat, the bottom of fixed seat is equipped with screw hole, the bottom of fixed seat and the top of form abut, the perforation aligned with screw hole is equipped on form, the bottom of form is equipped with plug rod, after adjusting the bottom of fixed seat to flush with the bottom of laminated slab main part after pouring operation, support rod, fixed rod and connecting rod can not be disassembled, and the screw hole at the bottom of fixed seat can be covered when subsequent surface coating is brushed to the overall floor, without secondary concrete pouring, improve pouring efficiency.

Description

Technical Field

[0001] This application relates to the field of composite slab joint casting technology, specifically a composite slab casting joint support structure. Background Technology

[0002] Due to the large-scale promotion of prefabricated buildings, composite slabs are being used more and more. In structural design, cast-in-place concrete strips are usually set at the joints of composite slabs. In order to ensure the quality of the cast-in-place concrete strips, formwork structures are usually set at the joints.

[0003] Currently, during formwork erection, a support frame (or joists) is typically constructed above the joints of the composite slab. Vertical through-bolts are then used to connect and fix the upper support frame to the formwork located below the composite slab, thus clamping and supporting the bottom formwork. However, this method requires the bolts to penetrate the concrete area to be poured. Once the concrete has initially hardened and reached the demolding strength, the bolts are unscrewed and removed, inevitably leaving through-bolt holes in the hardened joint concrete. These holes then need to be filled with concrete a second time. This increases labor and material costs, and the overall operation is cumbersome and inefficient. Utility Model Content

[0004] To address the problem of needing secondary pouring after dismantling slabs in existing technologies, this utility model provides a formwork support structure for the pouring joints of composite slabs.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] This utility model provides a formwork structure for the casting joint of a composite slab, which is set on the main body of the composite slab. The composite slab main bodies are in multiple sets, and a casting joint is formed between adjacent sets of composite slab main bodies. A steel truss is provided on the top of the composite slab main body. Its features are:

[0007] It includes a template and support rods. The template is set at the bottom of the pouring joint, and the top of the template abuts against the bottom of the composite slab body. The support rods are located at the top of the pouring joint and are arranged in multiple sets at intervals along the length of the pouring joint. The two ends of the support rods are provided with hooks that are matched with the steel truss. The support rods are slidably fitted with clips, and the bottom of the clips is fixedly fitted with a fixing rod. A connecting rod is slidably fitted on one side of the fixing rod, and the bottom of the connecting rod is fixedly fitted with a fixing seat. The bottom of the fixing seat is provided with a threaded hole, and the bottom of the fixing seat abuts against the top of the template. The template is provided with a through hole aligned with the threaded hole, and the bottom of the template is provided with an insert rod that passes through the through hole and is threaded into the threaded hole.

[0008] It also includes a limiting mechanism, which is disposed on the fixed rod.

[0009] Preferably, the limiting mechanism includes a screw, a slider, and an end cap. The fixed rod has an installation cavity, the screw is located within the installation cavity and rotatably connected to the fixed rod, and the side wall of the fixed rod has a groove communicating with the installation cavity. The slider is located within the installation cavity and is fitted onto the screw, with one end of the slider slidably positioned within the groove. An end cap is rotatably mounted on the bottom of the fixed rod, and the end cap is fixedly connected to one end of the screw. The top of the connecting rod is fixedly connected to the slider. After the support rod is connected to the steel truss, the operator rotates the end cap at the bottom of the fixed rod. The end cap drives the screw in the installation cavity to rotate, and the rotation of the screw causes the slider to move vertically up and down. The connecting rod at the outer end of the slider drives the bottom fixed seat to move synchronously up and down, thus adjusting the height of the fixed seat so that the bottom of the fixed seat is flush with the bottom of the composite slab body, making operation convenient.

[0010] Preferably, the number of the clamps is multiple sets and they are arranged at intervals along the length of the support rod. Multiple sets of clamps enable multi-point connection and fixation of the template, ensuring the stability of the template when pouring the pouring joint and ensuring the pouring quality.

[0011] Preferably, the bottom of the fixing seat is provided with an annular groove, and a sealing ring is embedded in the annular groove. When the template is connected and fixed to the fixing seat with the insert rod, the sealing ring in the arc groove abuts against the top of the template, thereby sealing the connection between the fixing seat and the template and preventing the grout from leaking from the connection.

[0012] Preferably, the bottom of the template is further provided with a pad and a support plate. The pad is located between the template and the support plate. The pad and the support plate are provided with through holes that are matched with the insert rod. The pad and the support plate further support the bottom of the template to prevent the template from deforming during pouring and causing leakage, thus ensuring the quality of pouring.

[0013] Preferably, the sleeve has a U-shaped groove, the support rod is slidably embedded in the U-shaped groove, the side wall of the U-shaped groove has a limiting groove, a locking block is embedded in the U-shaped groove, and a limiting strip that matches the limiting groove is fixedly installed on the locking block. The operator slides the limiting strip on the locking block along the limiting groove on the side wall of the U-shaped groove, thereby installing and removing the locking block, adjusting the limiting state of the support rod in the U-shaped groove, and after the locking block is removed, the support rod can be easily inserted and removed through the U-shaped groove, improving the installation efficiency of the sleeve.

[0014] Preferably, the top surface of the template is coated with a release agent. Applying a release agent to the template surface facilitates disassembly of the template after subsequent casting and molding, thereby improving work efficiency.

[0015] The advantages of adopting the above technical solution are:

[0016] In this invention, a template is provided at the bottom of the pouring joint, with the top of the template abutting against the bottom of the composite slab body. Multiple sets of support rods are spaced along the length of the top of the pouring joint. Hooks for the steel truss are provided at both ends of the support rods. Sleeve clips are slidably fitted onto the support rods, and a fixing rod is fixedly installed at the bottom of the sleeve clips. A connecting rod is slidably installed on one side of the fixing rod, and a fixing seat is fixedly installed at the bottom of the connecting rod. The bottom of the fixing seat has a threaded hole, and the bottom of the fixing seat abuts against the top of the template. The template has a through hole aligned with the threaded hole, and an insertion rod is provided at the bottom of the template. The insertion rod passes through the through hole and is threaded into the threaded hole. After adjusting the bottom of the fixing seat to be flush with the bottom of the composite slab body for pouring, the support rods, fixing rods, and connecting rods do not need to be disassembled. Furthermore, the threaded hole at the bottom of the fixing seat can be covered when applying surface coating to the entire floor slab later, eliminating the need for secondary concrete pouring and improving pouring efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0019] Figure 2 A partial cross-sectional view of the present invention is shown;

[0020] Figure 3 A partial cross-sectional view of the present invention is shown;

[0021] Figure 4 A partial structural schematic diagram of the present invention is shown.

[0022] The components include: 1. Composite slab body; 101. Pouring joint; 102. Steel truss; 2. Formwork; 3. Support rod; 301. Hook; 4. Clip; 401. U-shaped groove; 402. Limiting groove; 403. Locking block; 404. Limiting strip; 5. Fixing rod; 501. Installation cavity; 502. Screw; 503. Sliding block; 504. End cap; 6. Connecting rod; 601. Fixing seat; 602. Threaded hole; 7. Insert rod; 8. Pad; 9. Support plate. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] like Figure 1-4 As shown in the figure, this utility model embodiment discloses a formwork structure for the casting joint of a composite slab. The structure is installed on the composite slab body 1, which consists of multiple sets, with a casting joint 101 formed between adjacent sets. A steel truss 102 is installed on the top of the composite slab body 1, including a template 2 and support rods 3. The template 2 is located at the bottom of the casting joint 101, with its top abutting against the bottom of the composite slab body 1. The support rods 3 are located at the top of the casting joint 101 and are spaced apart along the length of the casting joint 101. Both ends of the support rods 3 are connected to the steel truss. The hook head 301 of the 102 is slidably fitted with a sleeve 4 on the support rod 3. A fixing rod 5 is fixedly installed at the bottom of the sleeve 4. A connecting rod 6 is slidably installed on one side of the fixing rod 5. A fixing seat 601 is fixedly installed at the bottom of the connecting rod 6. A threaded hole 602 is provided at the bottom of the fixing seat 601. The bottom of the fixing seat 601 abuts against the top of the template 2. The template 2 is provided with a through hole aligned with the threaded hole 602. An insert rod 7 is provided at the bottom of the template 2. The insert rod 7 passes through the through hole and is threaded into the threaded hole 602. It also includes a limiting mechanism, which is provided on the fixing rod 5.

[0025] In at least one embodiment, the limiting mechanism includes a screw 502, a slider 503, and an end cap 504. A mounting cavity 501 is provided inside the fixing rod 5. The screw 502 is located within the mounting cavity 501 and rotatably connected to the fixing rod 5. A groove communicating with the mounting cavity 501 is provided on the side wall of the fixing rod 5. The slider 503 is located within the mounting cavity 501 and is fitted onto the screw 502. One end of the slider 503 is slidably disposed within the groove. An end cap 504 is rotatably disposed at the bottom of the fixing rod 5. The end cap 504 is fixedly connected to one end of the screw 502. The top of the connecting rod 6... The part is fixedly connected to the slider 503. After the support rod 3 is connected to the steel truss 102, the operator rotates the end cap 504 at the bottom of the fixed rod 5. The end cap 504 drives the screw 502 in the installation cavity 501 to rotate. When the screw 502 rotates, it drives the slider 503 to move up and down in the vertical direction. The connecting rod 6 at the outer end of the slider 503 drives the bottom fixed seat 601 to move up and down synchronously, so as to adjust the height of the fixed seat 601, making the bottom of the fixed seat 601 flush with the bottom of the composite plate body 1, which is convenient to operate.

[0026] In at least one embodiment, the number of sleeves 4 is multiple sets and they are arranged at intervals along the length of the support rod 3. The multiple sets of sleeves 4 realize multi-point connection and fixation of the template 2, ensuring the stability of the template 2 when pouring the pouring joint 101, and ensuring the pouring quality.

[0027] In at least one embodiment, the bottom of the fixing seat 601 is provided with an annular groove, and a sealing ring is embedded in the annular groove. When the template 2 is connected and fixed to the fixing seat 601 with the insert rod 7, the sealing ring in the arc groove abuts against the top of the template 2, thereby sealing the connection between the fixing seat 601 and the template 2 and preventing the grout from leaking from the connection.

[0028] In at least one embodiment, a pad 8 and a support plate 9 are also provided at the bottom of the template 2. The pad 8 is located between the template 2 and the support plate 9. The pad 8 and the support plate 9 are provided with through holes that are fitted to the insert rod 7. The pad 8 and the support plate 9 provide further support to the bottom of the template 2, so as to prevent the template 2 from deforming during pouring and causing leakage, and to ensure the quality of pouring.

[0029] In at least one embodiment, the sleeve 4 is provided with a U-shaped groove 401, the support rod 3 is slidably embedded in the U-shaped groove 401, the side wall of the U-shaped groove 401 is provided with a limiting groove 402, the U-shaped groove 401 is embedded with a locking block 403, and a limiting strip 404 that matches the limiting groove 402 is fixedly provided on the locking block 403. The operator slides the limiting strip 404 on the locking block 403 along the limiting groove 402 on the side wall of the U-shaped groove 401, thereby installing and removing the locking block 403, adjusting the limiting state of the support rod 3 in the U-shaped groove 401, and after the locking block 403 is removed, the support rod 3 can be conveniently embedded and removed through the U-shaped groove 401, improving the installation efficiency of the sleeve 4.

[0030] In at least one embodiment, the top surface of the template 2 is coated with a release agent. Applying the release agent to the surface of the template 2 facilitates the disassembly of the template 2 after subsequent casting and molding, thereby improving work efficiency.

[0031] In at least one embodiment, the hooks 301 at both ends of the support rod 3 can be formed by bending the ends of the support rod 3 directly on the construction site using a steel bar bending device, thereby ensuring that the hooks 301 effectively engage with the steel truss 102 on the composite slab body 1.

[0032] When performing formwork erection on the pouring joint 101 of the composite slab, multiple sets of support rods 3 are arranged at intervals along the length of the top of the pouring joint 101. Then, the hooks 301 at both ends of the support rods 3 are connected and limited to the steel trusses 102 on the main body 1 of the composite slab on both sides. After that, the connecting rods 6 at the bottom of the sleeves 4 on the support rods 3 are slid vertically so that the bottom of the fixing seat 601 at the bottom of the connecting rod 6 is flush with the bottom of the main body 1 of the composite slab. The connecting rod 6 can be adjusted and limited by the limiting mechanism on the fixing rod 5 to ensure the stability of the connecting rod 6 after sliding. Then, the template 2 is placed at the bottom of the main body 1 of the composite slab to close the bottom of the pouring joint 101. At this time, the top two sides of the template 2 abut against the bottom of a set of the main body 1 of the composite slab, and the threaded holes 602 at the bottom of the fixing seat 601 are aligned with the through holes on the template 2 by sliding the sleeves 4. Then, the insert rod 7 is inserted through the through holes and threaded into the fixing seat 601. The threaded hole 602 at the bottom connects and fixes the fixing seat 601 and the template 2. The template 2 is connected by the support rod 3, fixing rod 5 and connecting rod 6. Then, concrete can be poured at the pouring joint 101. During the concrete pouring operation, the concrete is poured directly above the steel truss 102 to cover the support rod 3. The support rod 3, fixing rod 5 and connecting rod 6 do not need to be disassembled after the concrete is formed. The support rod 3 can further connect and strengthen the two sets of composite slab bodies 1, improving the strength of the floor slab after pouring. The bottom of the fixing seat 601 is flush with the bottom of the composite slab body 1. When the concrete is poured and the template 2 and the insert rod 7 are disassembled, the fixing seat 601 will not protrude from the bottom of the concrete pouring site. The threaded hole 602 at the bottom of the fixing seat 601 can be covered when the surface coating of the whole floor slab is applied later, without the need for secondary concrete pouring, thus improving the pouring efficiency.

[0033] In at least one embodiment, after the concrete at the pouring joint 101 is poured and the formwork 2 is removed, the threaded hole 602 at the bottom of the fixing seat 601 is flush with the bottom of the poured concrete. The threaded hole 602 at the bottom of the fixing seat 601 can be used as a mounting point for equipment in subsequent construction operations, and can play a mounting role without the need to drill additional holes at the bottom of the overall floor slab for mounting.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A formwork structure for casting joints of composite slabs, comprising multiple sets of composite slabs with casting joints formed between adjacent sets, and a steel truss at the top of the composite slabs, characterized in that: It includes a template and support rods. The template is set at the bottom of the pouring joint, and the top of the template abuts against the bottom of the composite slab body. The support rods are located at the top of the pouring joint and are arranged in multiple sets at intervals along the length of the pouring joint. The two ends of the support rods are provided with hooks that are matched with the steel truss. The support rods are slidably fitted with clips, and the bottom of the clips is fixedly fitted with a fixing rod. A connecting rod is slidably fitted on one side of the fixing rod, and the bottom of the connecting rod is fixedly fitted with a fixing seat. The bottom of the fixing seat is provided with a threaded hole, and the bottom of the fixing seat abuts against the top of the template. The template is provided with a through hole aligned with the threaded hole, and the bottom of the template is provided with an insert rod that passes through the through hole and is threaded into the threaded hole. It also includes a limiting mechanism, which is disposed on the fixed rod.

2. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The limiting mechanism includes a screw, a slider, and an end cap. The fixed rod has an installation cavity, the screw is located in the installation cavity and is rotatably connected to the fixed rod. The side wall of the fixed rod has a groove communicating with the installation cavity. The slider is located in the installation cavity and is fitted onto the screw. One end of the slider is slidably disposed in the groove. An end cap is rotatably disposed at the bottom of the fixed rod and is fixedly connected to one end of the screw. The top of the connecting rod is fixedly connected to the slider.

3. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The number of sets of clips is multiple and they are arranged at intervals along the length of the support rod.

4. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The bottom of the fixing base is provided with an annular groove, and a sealing ring is embedded in the annular groove.

5. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The bottom of the template is also provided with a pad and a support plate. The pad is located between the template and the support plate, and the pad and the support plate are provided with through holes for fitting the insertion rod.

6. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The sleeve is provided with a U-shaped groove, the support rod is slidably embedded in the U-shaped groove, the side wall of the U-shaped groove is provided with a limiting groove, a card block is embedded in the U-shaped groove, and a limiting strip that matches the limiting groove is fixedly provided on the card block.

7. The formwork structure for the joint of a composite slab casting according to claim 1, characterized in that: The top surface of the template is coated with a release agent.

Images