A steel bar truss floor support plate and cast-in-place concrete beam wooden mold plate node construction method

Abstract

The present application relates to the field of building construction technology, specifically to a steel bar truss floor support plate and cast-in-place concrete beam wooden formwork node construction method, specifically comprising the following steps: preparation before construction: assembling steel bar truss and galvanized bottom plate, determining the disc buckle support system, designing the formwork and supporting mechanism, positioning and installing the disc buckle support system and cast-in-place beam formwork system: measuring and laying out according to the design drawings and the site conditions, marking the installation area of the disc buckle support system and laying the cushion layer and leveling, installing the side supporting mechanism according to the beam height, and tightening the nut: installing the screw rod on the support plate through the adjusting nut, combining through the cast-in-place beam formwork system, the galvanized bottom plate and the top supporting plate, forming the steel bar truss floor support plate and cast-in-place concrete beam wooden formwork node structure, and during the concrete pouring process, since the top supporting plate at the corners of the steel bar truss floor support plate serves as the support, the joint will not have the problems of improper joint, grout leakage and misalignment, improving the construction quality.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically a construction method for the joint between a steel truss floor slab and a cast-in-place concrete beam with wooden formwork. Background Technology

[0002] Reinforced truss floor decking features mechanized production, uniform rebar spacing, consistent concrete cover thickness, and high-quality floor slab construction. It significantly reduces on-site rebar tying work, accelerates construction progress, enhances construction safety, and promotes civilized construction practices. The prefabricated formwork and connectors are easy to assemble and disassemble, can be reused multiple times, save steel, and meet national energy conservation and environmental protection requirements.

[0003] During construction, steel truss floor decking is typically used as the horizontal structure, while wooden formwork is used for the vertical cast-in-place beams. Because the bottom slab of the steel truss floor decking is relatively thin, its edges and corners are prone to deformation and warping during construction. Furthermore, misalignment of the splicing joints between the steel truss floor decking and the wooden formwork of the cast-in-place concrete beams can easily occur, leading to misalignment during concrete pouring. Therefore, this invention proposes a construction method for the joint between the steel truss floor decking and the wooden formwork of the cast-in-place concrete beams to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for the joint between a steel truss floor slab and a cast-in-place concrete beam with wooden formwork, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork, specifically including the following steps:

[0006] S1. Pre-construction preparation: Assemble the steel truss and galvanized base plate, determine the disc buckle support system, design the formwork and support structure;

[0007] S2. Positioning and installing the disc-lock support system and cast-in-place beam formwork system: Measure and lay out the lines according to the design drawings and site conditions, mark the location of the disc-lock support system installation area, and lay the subgrade and level the surface.

[0008] S3. Install the side support mechanism according to the beam height and tighten the nuts: Install the screw rod on the support plate by adjusting the nut, and install the top support plate on the upper end of the screw rod;

[0009] S4. Hoisting steel truss floor slabs and installing reinforcement bars at joints;

[0010] S5. Positioning and calibration: Determine the position of the cast-in-place beam formwork system;

[0011] S6. Pour concrete and cure the poured concrete regularly;

[0012] S7. Remove the formwork support system after the concrete reaches the design strength.

[0013] Preferably, the support plate is installed on the upper end of the disc buckle support system. The upper end of the support plate has through holes on all four sides, and the inner end of the through holes has a limiting hole that penetrates the upper and lower ends of the support plate.

[0014] Preferably, the support plate has a template 1 and a template 2 at one end, and each template 1 has two templates. Each template 1 has a limit post fixedly installed on the lower left and right sides. The lower end of the limit post is slidably inserted into the limit hole. Each template 1 has a connecting groove 1 on the inner left and right sides. Each template 2 has a connecting groove 2 on the inner left and right sides. The template 1 and template 2 are spliced ​​into a casting cavity by connecting the connecting groove 1 and connecting groove 2 to each other.

[0015] Preferably, each template has a threaded cylinder embedded in the sidewalls at both ends, and a fixing block is provided on the outer side of each template. A bolt hole is provided on the sidewall of one end of the fixing block, which extends through its front and rear ends. The bolt hole is convex, and a bolt is provided on one side of the bolt hole. One end of the bolt passes through the bolt hole and is threaded to the inner wall of the threaded cylinder. The outer end of the bolt is flush with the outer end of the fixing block.

[0016] Preferably, the other end of the fixing block extends outward from the outer side of the template, and an overlapping groove is provided on the upper side of the other end of the fixing block. A threaded hole is provided on the side wall of the other end of the fixing block, and a hand-tightening bolt is threaded into the threaded hole.

[0017] Preferably, each of the templates is provided with a fixing strip on the outside, and the lower left and right sides of the fixing strip are provided with overlapping grooves. The left and right ends of the overlapping grooves are slidably inserted into the overlapping grooves, and the overlapping grooves and overlapping grooves interlock with each other.

[0018] Preferably, one end of the hand-tightening bolt is rotated and inserted into the first lap groove, and comes into contact with the side wall of the fixing strip, pushing the fixing strip and the second template inward.

[0019] Preferably, a screw is inserted into each of the through holes, and two adjusting nuts are threaded onto the lower outer wall of the screw. The two adjusting nuts are located at the upper and lower ends of the support plate, respectively. By adjusting the adjusting nuts, the upper end of the screw is made flush with the upper ends of template one and template two.

[0020] Preferably, the upper outer wall of each screw is fixedly welded with a limit ring.

[0021] Preferably, the top support plate is orifice-shaped, and each of the four end sidewalls of the top support plate is provided with a plug hole. The top support plate is fitted onto the outer wall of the screw through the plug hole, and the top support plate sits on the upper end of the limiting ring. At this time, the upper end of the screw and the upper end of the top support plate are flush, the upper end of the top support plate is flush with the upper ends of template one and template two, and the upper end of the top support plate is in contact with the lower end sidewall of the galvanized base plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By combining the cast-in-place beam formwork system, galvanized base plate, and top support plate, a joint structure is formed between the steel truss floor deck and the cast-in-place concrete beam formwork. During the concrete pouring process, because the top support plate is used as support at the corners of the steel truss floor deck, problems such as loose joints, grout leakage, and misalignment will not occur at the joint, thus improving the construction quality. Attached Figure Description

[0024] Figure 1 This is a front view of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram showing the connection between template one, template two, and the top support plate of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the top support plate located at the upper end of the support plate in this invention;

[0027] Figure 4 This is a schematic diagram showing the connection between Template 1 and Template 2 of the present invention;

[0028] Figure 5 These are schematic diagrams showing the unfolded forms of Template 1 and Template 2 of the present invention;

[0029] Figure 6 This is a schematic diagram of the template structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the construction method of the present invention.

[0031] In the diagram: 1. Steel truss; 2. Galvanized base plate; 3. Disc buckle support system; 4. Support plate; 5. Through hole; 6. Limiting hole; 7. Screw; 8. Limiting ring; 9. Adjusting nut; 10. Top support plate; 11. Insertion hole; 12. Template 1; 13. Limiting column; 14. Connecting groove 1; 15. Threaded cylinder; 16. Fixing block; 17. Overlap groove 1; 18. Bolt hole; 19. Threaded hole; 20. Hand-tightening bolt; 21. Template 2; 22. Connecting groove 2; 23. Fixing strip; 24. Overlap groove 2. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0033] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0036] Please see Figures 1 to 7This invention provides a technical solution: a construction method for a steel truss floor deck slab and cast-in-place concrete beam formwork joint. The cast-in-place beam formwork system includes a support plate 4, which is installed on the upper end of a disc-lock support system 3. Through holes 5 are provided on all four sides of the upper end of the support plate 4. Limiting holes 6 are provided at the inner ends of the through holes 5, penetrating the upper and lower ends of the support plate 4. Template 12 and Template 21 are provided at the ends of the support plate 4. Two templates are provided for each template 12 and Template 21. Limiting columns 13 are fixedly installed on the left and right sides of the lower end of each template 12. The lower ends of the limiting columns 13 slide. Insert the template 12 into the limiting hole 6 and initially fix it on the upper end of the support plate 4. Each template 12 has a connecting groove 14 on both the left and right sides of its inner end, and each template 21 has a connecting groove 22 on both the left and right sides of its inner end. The template 12 and template 21 are spliced ​​into a casting cavity by connecting the connecting groove 14 and connecting groove 22. Both template 12 and template 21 are made of hollow iron plate. Each template 12 has a threaded cylinder 15 embedded in the side wall at both the left and right ends. The threaded cylinder 15 is welded into the template 12.

[0037] Each template 12 has a fixing block 16 on its outer sides at both ends. One side wall of the fixing block 16 has a bolt hole 18 extending through its front and rear ends. The bolt hole 18 is convex. The other end of the fixing block 16 extends beyond the outer side of the template 12. An overlapping groove 17 is formed on the upper side of the other end of the fixing block 16. The width of the overlapping groove 17 is greater than the width of the fixing strip 23. When the fixing block 16 is fixedly installed on the outer wall of the template 12, one end of the overlapping groove 17 contacts the outer wall of the template 12, and the other side wall of the fixing block 16... A threaded hole 19 is provided on the top, and the inner end of the threaded hole 19 is connected to the lap groove 17. A hand-tightening bolt 20 is connected to the threaded hole 19. A bolt is provided on one side of the bolt hole 18. One end of the bolt passes through the bolt hole and is threadedly connected to the inner wall of the threaded cylinder 15. The outer end of the bolt is flush with the outer end of the fixing block 16. The fixing block 16 is fixed on the outer side wall of the template 12. Before erecting the cast-in-place beam template system, the fixing block 16 can be fixedly installed on the outer end of the template 12, which saves time and effort and can improve the efficiency of erecting the cast-in-place beam template system.

[0038] Each template 21 has a fixing strip 23 on its outer side. The lower left and right sides of the fixing strip 23 have overlapping grooves 24. The left and right ends of the overlapping grooves 24 slide into the overlapping grooves 17. The overlapping grooves 17 and 24 interlock with each other. By allowing the overlapping grooves 24 to slide in the overlapping grooves 17, the position of the fixing strip 23 in the front-back direction can be changed, and the left and right direction of the fixing strip 23 can be limited. By turning the hand-tightening bolt 20, one end of the hand-tightening bolt 20 rotates and inserts into the overlapping grooves 17 and contacts the side wall of the fixing strip 23. The fixing strip 23 and the template 21 are pushed inward, so that the template 21 fits tightly against the outer wall of the template 12, thereby firmly fixing the template 12 and the template 21 together, so that concrete can be poured into the pouring cavity.

[0039] After installing template 12 and template 21, insert screws 7 into each through hole 5. A limit ring 8 is fixedly welded to the upper outer wall of each screw 7. Two adjusting nuts 9 are threadedly connected to the lower outer wall of the screw 7. The two adjusting nuts 9 are located at the upper and lower ends of the support plate 4, respectively. Adjust the adjusting nuts 9 so that the upper end of the screw 7 is flush with the upper end of template 12 and template 21. Then tighten the two adjusting nuts 9 to fix the screw 7.

[0040] The top support plate 10 is orifice-shaped, and insertion holes 11 are provided on the four side walls of the top support plate 10. The top support plate 10 is fitted onto the outer wall of the screw rod 7 through the insertion holes 11. The top support plate 10 is located on the upper end of the limiting ring 8. At this time, the upper end of the screw rod 7 is flush with the upper end of the top support plate 10, and the upper end of the top support plate 10 is flush with the upper ends of the template 12 and template 21, thus fixing the top support plate 10. The upper end of the top support plate 10 is in contact with the lower side wall of the galvanized base plate 2 to prevent the corner support of the steel truss 1 floor deck from being insufficient during the concrete pouring process, which could lead to misalignment of the joints, leakage of grout, and misalignment. Since the load-bearing capacity of the cast-in-place concrete beam is supported by the disc buckle support system 3 at the bottom of the beam, the screw rod 7 and the top support plate 10 only serve as mechanisms for tightening the galvanized base plate 2.

[0041] The steel truss 1 serves as the steel skeleton for the horizontal concrete floor slab, while the galvanized base plate 2 acts as a support mechanism for the steel truss and the concrete floor slab. Above the disc-lock support system 3, the cast-in-place beam formwork system, the galvanized base plate 2, and the top support plate 10 are combined to form the joint structure between the steel truss floor slab and the cast-in-place concrete beam formwork. During the concrete pouring process, because the top support plate 10 provides support at the corners of the steel truss floor slab, problems such as loose joints, grout leakage, and misalignment will not occur at the joints, thus improving the construction quality.

[0042] Before construction, the following steps are required for the installation of this device: Assemble the steel truss 1 and galvanized base plate 2; determine the disc-lock support system 3; design the formwork and support mechanism; position and install the disc-lock support system 3 and the cast-in-place beam formwork system; measure and lay out the lines according to the design drawings and site conditions; mark the area for installing the disc-lock support system 3; lay a soil layer and level the surface; install the side support mechanism according to the beam height; tighten the nuts; install the screw rod 7 on the support plate 4 using adjusting nuts 9; install the top support plate 10 on the upper end of the screw rod 7; hoist the steel truss floor slab; install the node structural steel reinforcement; position and calibrate; determine the position of the cast-in-place beam formwork system; pour concrete; regularly cure the poured concrete; and remove the formwork support system after the concrete reaches the design strength.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork, characterized in that: Specifically, the steps include the following: S1. Pre-construction preparation: Assemble the steel truss (1) and galvanized base plate (2), determine the disc buckle support system (3), and design the formwork and support mechanism; S2. Positioning and installing the disc buckle support system (3) and the cast-in-place beam formwork system: Measure and lay out the lines according to the design drawings and site conditions, mark the location of the disc buckle support system (3) area, and lay the subgrade and level it. S3. Install the side support mechanism according to the beam height and tighten the nuts: Install the screw rod (7) on the support plate (4) by adjusting the nut (9) and install the top support plate (10) on the upper end of the screw rod (7). S4. Hoisting steel truss floor slabs and installing reinforcement bars at joints; S5. Positioning and calibration: Determine the position of the cast-in-place beam formwork system; S6. Pour concrete and cure the poured concrete regularly; S7. Remove the formwork support system after the concrete reaches its design strength; The support plate (4) is installed on the upper end of the disc buckle support system (3). The upper end of the support plate (4) is provided with through holes (5) on all four sides. The inner end of the through holes (5) is provided with limiting holes (6). The limiting holes (6) penetrate the upper and lower ends of the support plate (4). The support plate (4) is provided with template one (12) and template two (21) at its end. Template one (12) and template two (21) are provided in two pieces respectively. Each template one (12) has a limit post (13) fixedly installed on the left and right sides of its lower end. The lower end of the limit post (13) is slidably inserted into the limit hole (6). Each template one (12) has a connecting groove one (14) on the left and right sides of its inner end. Each template two (21) has a connecting groove two (22) on the left and right sides of its inner end. Template one (12) and template two (21) are spliced ​​into a casting cavity by connecting the connecting groove one (14) and the connecting groove two (22). A screw (7) is inserted into each of the through holes (5). Two adjusting nuts (9) are threaded onto the outer wall of the lower end of the screw (7). The two adjusting nuts (9) are located at the upper and lower ends of the support plate (4) respectively. By adjusting the adjusting nuts (9), the upper end of the screw (7) is flush with the upper ends of template one (12) and template two (21). The upper outer wall of each screw (7) is fixedly welded with a limit ring (8); The top support plate (10) is orifice-shaped, and insertion holes (11) are provided on the four side walls of the top support plate (10). The top support plate (10) is fitted onto the outer wall of the screw (7) through the insertion holes (11). The top support plate (10) is located on the upper end of the limiting ring (8). At this time, the upper end of the screw (7) and the upper end of the top support plate (10) are flush. The upper end of the top support plate (10) is flush with the upper ends of template one (12) and template two (21). The upper end of the top support plate (10) is in contact with the lower side wall of the galvanized base plate (2).

2. The construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork as described in claim 1, characterized in that: Each template (12) has a threaded cylinder (15) embedded in the side wall at both ends. Each template (12) has a fixing block (16) on the outer side at both ends. A bolt hole (18) is opened on the side wall at one end of the fixing block (16) and passes through its front and rear ends. The bolt hole (18) is convex. A bolt is provided on one side of the bolt hole (18). One end of the bolt passes through the bolt hole and is threaded to the inner wall of the threaded cylinder (15). The outer end of the bolt is flush with the outer end of the fixing block (16).

3. The construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork as described in claim 2, characterized in that: The other end of the fixing block (16) extends out of the outer side of the template (12). The upper side of the other end of the fixing block (16) is provided with an overlap groove (17). The other side wall of the fixing block (16) is provided with a threaded hole (19). A hand-tightening bolt (20) is threaded into the threaded hole (19).

4. The construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork as described in claim 1, characterized in that: Each template 2 (21) is provided with a fixing strip (23) on the outside. The lower left and right sides of the fixing strip (23) are provided with overlapping groove 2 (24). The left and right ends of the overlapping groove 2 (24) are slidably inserted into the overlapping groove 1 (17). The overlapping groove 1 (17) and the overlapping groove 2 (24) interlock with each other.

5. The construction method for the joint between a reinforced truss floor slab and a cast-in-place concrete beam with timber formwork as described in claim 3, characterized in that: One end of the hand-tightening bolt (20) is rotated and inserted into the first lap groove (17), and comes into contact with the side wall of the fixing strip (23), pushing the fixing strip (23) and the template (21) inward.

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