Construction method of steel bar truss floor support plate

Abstract

The invention discloses a construction method of a steel bar truss floor support plate. The construction method comprises the following steps of machining of a bottom die and a fastening mechanism, machining of a steel bar truss, machining of a positioning mechanism, assembling of the steel bar truss floor support plate, hoisting and concrete pouring. According to the construction method, the steps are simple, the overall strength and stability of the steel bar truss floor support plate are improved, rapid assembly between the steel bar trusses and the bottom die is facilitated, meanwhile, the connection stability between the steel bar trusses is improved, and the construction difficulty is reduced.

Description

Technical Field

[0001] The invention relates to a construction method of a steel bar truss floor deck. Background Art

[0002] Steel truss floor deck is a composite load-bearing plate that uses steel bars as upper chord, lower chord and web members and is connected to the bottom plate as a whole. Steel truss floor deck is suitable for the requirements of rapid construction of the main steel structure. It can provide a firm working platform in a short time, and can adopt multiple floors to lay corrugated steel plates and pour concrete slabs in layers. Steel truss floor deck is widely used in steel structure buildings such as power plants, power equipment companies, automobile showrooms, steel structure workshops, railway stations, stadiums, concert halls, etc.

[0003] The steel truss floor deck in the prior art has insufficient connection strength during assembly, which increases the difficulty of construction and has poor stability. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for a construction method of a steel truss floor deck in view of the shortcomings of the prior art. The construction method has simple steps, which not only improves the overall strength and stability of the steel truss floor deck, but also facilitates the rapid assembly between the steel trusses and the bottom formwork, while improving the connection stability between the steel trusses and reducing the construction difficulty.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A construction method for a steel bar truss floor deck, characterized by comprising the following steps:

[0007] S1. Bottom mold and fastening mechanism processing

[0008] a. First, make a bottom mold of corresponding size, evenly open through holes along the bottom mold, and evenly open plug holes on one side of the bottom mold. The hole diameter of the plug hole is smaller than the hole diameter of the through hole;

[0009] b. Then, along the bottom surface of the bottom mold, a fixing block is installed between two adjacent through holes along the X direction, and each fixing block is provided with an axial hole;

[0010] c. According to the telescopic height position of the fastening mechanism and the size of the through hole, the corresponding rotating clamping arms are processed, and arc grooves are symmetrically arranged on the inner side surfaces of two adjacent rotating clamping arms. Each rotating clamping arm is rotatably connected to the corresponding through hole through a shaft rod, and the top and bottom ends of the rotating clamping arms protrude from the top and bottom surfaces of the bottom mold respectively;

[0011] d. Select a suitable turntable according to the swing amplitude of the rotating clamp arm, connect the turntable to the fixed block through the rotating shaft, make each turntable close to the corresponding fixed block, select a suitable push-pull rod, and rotate the two ends of the push-pull rod to connect to the turntable and the rotating clamp arm respectively;

[0012] e. Install a manual adjustment component along one end of the rotating shaft. The manual adjustment component is connected to the bottom mold through an insertion rod, and the insertion rod matches the insertion hole;

[0013] S2. Steel bar truss processing

[0014] According to the size of the bottom mold, the upper chord steel bars and the lower chord steel bars of corresponding sizes are processed, and the upper chord steel bars are placed on the median perpendicular line of the two adjacent lower chord steel bars. The upper chord steel bars and the lower chord steel bars are fixedly connected by the inclined web reinforcement, so that the upper chord steel bars and the lower chord steel bars and the two adjacent lower chord steel bars are kept parallel to each other;

[0015] S3. Positioning mechanism processing

[0016] a. First, according to the layout position of the steel bar truss on the bottom form, a suitable first beam and a second beam are selected, and the first positioning groove and the second positioning groove are respectively formed along the top surface of the first beam and the bottom surface of the second beam. The number of the first positioning groove and the second positioning groove is consistent with the number of the steel bar truss;

[0017] b. Then select a reinforcing rod of appropriate length, set external threads on both ends of the reinforcing rod, and evenly open threaded holes along the side of the first crossbeam;

[0018] S4. Assembly of steel truss floor deck

[0019] a. First, hoist the processed steel bar truss to 5-10cm above the bottom mold, turn the manual adjustment component to make the rotating clamp arm on the fastening mechanism close to the lower chord steel bar of the steel bar truss, then slowly lower the steel bar truss, and turn the manual adjustment component at the same time until the arc groove on the rotating clamp arm clamps and fixes the lower chord steel bar;

[0020] b. Then insert the rod along the vertical direction of the socket until the bottom of the rod is inserted into the manual adjustment component, and fix the manual adjustment component;

[0021] c. Then, place the processed first crossbeam horizontally into the bottom of the upper chord steel bars of each steel bar truss, so that the first positioning groove fits the upper chord steel bars, and then place the second crossbeam above the upper chord steel bars, so that the second positioning groove fits the upper chord steel bars, and fix the second crossbeam to the first crossbeam through fasteners;

[0022] d. Finally, the reinforcing rods are sequentially connected between two adjacent first beams;

[0023] S5. Hoisting and pouring concrete

[0024] a. First, hoist the assembled steel truss floor decking plate onto the floor as a whole for temporary support;

[0025] b. Then pour the concrete and remove the temporary support after the concrete reaches the conditions for demolding.

[0026] The construction method has simple steps, which not only improves the overall strength and stability of the steel truss floor deck, but also facilitates the rapid assembly between the steel trusses and the bottom formwork, while improving the connection stability between the steel trusses and reducing the construction difficulty.

[0027] Furthermore, in step S1 process a, two adjacent through holes along the X direction are grouped together for assembling the fastening mechanism, thereby improving the stability and reliability of the fastening mechanism during operation, and further improving the connection strength and stability between the steel truss and the bottom mold.

[0028] Furthermore, in step S1 process b, the fixed blocks distributed along the Y direction are located on the same straight line, ensuring that the rotating shaft passes through each fixed block horizontally, so that each turntable can rotate synchronously, and each rotating clamping arm along the Y direction can clamp the steel truss synchronously.

[0029] Furthermore, in step S1 process c, the size of the through hole is larger than the size of the rotating clamp arm, so that the rotating clamp arm can be rotated along the through hole, which is convenient for assembling the steel bar truss.

[0030] Furthermore, the two push-pull rods between the two adjacent rotating clamp arms in step S1 process d are distributed at 180 degrees, which can ensure that the rotating clamp arms on both sides rotate synchronously in opposite directions, thereby achieving clamping of the steel truss, and the operation is flexible and convenient.

[0031] Furthermore, in step S1 process e, the manual adjustment component includes a rotating arm and a handle, the end of the rotating arm is fixed to the rotating shaft, the handle is vertically connected to the other end of the rotating arm, and a slot is provided on the rotating arm, and the slot matches the insertion rod. The handle can drive the rotating shaft to rotate through the rotating arm to adjust each rotating clamp arm. After rotating into place, the bottom of the insertion rod is limited in the slot to fix the rotating shaft, thereby fixing the rotating clamp arm.

[0032] Furthermore, in step S1 process e, the insertion rod and the insertion hole are connected by threading or snapping.

[0033] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0034] The construction method of the present invention has simple steps, which not only improves the overall strength and stability of the steel truss floor deck, but also facilitates the rapid assembly between the steel trusses and the bottom formwork, while improving the connection stability between the steel trusses and reducing the construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings:

[0036] Figure 1 It is a flow chart of a construction method of a steel bar truss floor deck of the present invention;

[0037] Figure 2 It is a structural schematic diagram of the steel bar truss floor deck in the present invention;

[0038] Figure 3 for Figure 2 Structural diagram of the middle A direction;

[0039] Figure 4 It is a structural schematic diagram of the bottom mold in the present invention;

[0040] Figure 5 It is a structural schematic diagram of the fastening mechanism in the present invention;

[0041] Figure 6 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0042] Figure 7 for Figure 5 Schematic diagram of the structure in the B direction;

[0043] Figure 8 It is a structural schematic diagram of the positioning mechanism in the present invention;

[0044] Fig. 9 It is a structural schematic diagram of the steel bar truss in the present invention.

[0045] In the figure: 1-bottom mold; 2-rebar truss; 3-fastening mechanism; 4-positioning mechanism; 5-insertion rod; 6-through hole; 7-insertion hole; 8-fixing block; 9-rotating clamp arm; 10-arc groove; 11-axis rod; 12-turntable; 13-rotating shaft; 14-rotating arm; 15-slot; 16-handle; 17-push-pull rod; 18-first crossbeam; 19-second crossbeam; 20-first positioning groove; 21-second positioning groove; 22-fastener; 23-reinforcement rod; 24-lower chord steel bar; 25-upper chord steel bar; 26-web reinforcement. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0048] like Figures 1 to 9 As shown, a construction method of a steel truss floor deck of the present invention comprises the following steps:

[0049] S1, bottom mold 1 and fastening mechanism 3 processing

[0050] a. First, a bottom mold 1 of corresponding size is made, through holes 6 are evenly opened along the bottom mold 1, and plug holes 7 are evenly opened on one side of the bottom mold 1, and the hole diameter of the plug hole 7 is smaller than the hole diameter of the through hole 6;

[0051] Two adjacent through holes 6 along the X direction form a group, which are used to assemble the fastening mechanism 3, thereby improving the stability and reliability of the fastening mechanism 3 when working, and further improving the connection strength and stability between the steel bar truss 2 and the bottom mold 1.

[0052] b. Then, along the bottom surface of the bottom mold 1, a fixing block 8 is installed between two adjacent through holes 6 along the X direction, and each fixing block 8 is provided with an axial hole;

[0053] The fixed blocks 8 distributed along the Y direction are located on the same straight line, ensuring that the rotating shaft 13 passes through each fixed block 8 horizontally, so that each turntable 12 can rotate synchronously, and each rotating clamping arm 9 along the Y direction can clamp the steel truss 2 synchronously.

[0054] c. According to the telescopic height position of the fastening mechanism 3 and the size of the through hole 6, the corresponding rotating clamping arms 9 are processed, and arc grooves 10 are symmetrically provided on the inner side surfaces of two adjacent rotating clamping arms 9. Each rotating clamping arm 9 is rotatably connected to the corresponding through hole 6 through a shaft 11, and the top and bottom ends of the rotating clamping arms 9 protrude from the top and bottom surfaces of the bottom mold 1 respectively;

[0055] The size of the through hole 6 is larger than that of the rotating clamp arm 9 , so that the rotating clamp arm 9 can be rotated along the through hole 6 , which is convenient for assembling the steel bar truss 2 .

[0056] d. Select a suitable turntable 12 according to the swing amplitude of the rotating clamp arm 9, connect the turntable 12 to the fixed block 8 through the rotating shaft 13, make each turntable 12 close to the corresponding fixed block 8, select a suitable push-pull rod 17, and rotate the two ends of the push-pull rod 17 to connect to the turntable 12 and the rotating clamp arm 9 respectively;

[0057] The two push-pull rods 17 between two adjacent rotating clamp arms 9 are distributed at 180°, which can ensure that the rotating clamp arms 9 on both sides rotate synchronously in opposite directions, thereby clamping the steel bar truss 2, and the operation is flexible and convenient.

[0058] e. Install a manual adjustment component along one end of the rotating shaft 13, and connect the manual adjustment component to the bottom mold 1 through the insertion rod 5, and the insertion rod 5 matches the insertion hole 7;

[0059] The manual adjustment assembly includes a rotating arm 14 and a handle 16. The end of the rotating arm 14 is fixed to the rotating shaft 13. The handle 16 is vertically connected to the other end of the rotating arm 14. A slot 15 is provided on the rotating arm 14. The slot 15 matches the insertion rod 5. The handle 16 can drive the rotating shaft 13 to rotate through the rotating arm 14 to adjust each rotating clamp arm 9. After rotating into place, the bottom of the insertion rod 5 is limited in the slot 15 to fix the rotating shaft 13, thereby fixing the rotating clamp arm 9.

[0060] The insertion rod 5 and the insertion hole 7 are connected by thread or by clamping.

[0061] S2, steel truss 2 processing

[0062] According to the size of the bottom mold 1, the upper chord steel bars 25 and the lower chord steel bars 24 of corresponding sizes are processed, and the upper chord steel bars 25 are placed on the mid-vertical line of the two adjacent lower chord steel bars 24, and the upper chord steel bars 25 and the lower chord steel bars 24 are fixedly connected by the inclined web bars 26, so that the upper chord steel bars 25 and the lower chord steel bars 24 and the two adjacent lower chord steel bars 24 are kept parallel to each other;

[0063] S3, positioning mechanism 4 processing

[0064] a. First, according to the layout position of the steel bar truss 2 on the bottom mold 1, a suitable first beam 18 and a second beam 19 are selected, and the first positioning groove 20 and the second positioning groove 21 are respectively formed along the top surface of the first beam 18 and the bottom surface of the second beam 19. The number of the first positioning groove 20 and the second positioning groove 21 is consistent with the number of the steel bar truss 2;

[0065] b. Then select a reinforcing rod 23 of appropriate length, set external threads on both ends of the reinforcing rod 23, and evenly open threaded holes along the side of the first crossbeam 18;

[0066] S4. Assembly of steel truss floor deck

[0067] a. First, hoist the processed steel bar truss 2 to 5-10 cm above the bottom mold 1, rotate the manual adjustment component to make the rotating clamp arm 9 on the fastening mechanism 3 close to the lower chord steel bar 24 of the steel bar truss 2, then slowly lower the steel bar truss 2, and rotate the manual adjustment component at the same time until the arc groove 10 on the rotating clamp arm 9 clamps and fixes the lower chord steel bar 24;

[0068] b. Then insert the rod 5 along the vertical direction of the insertion hole 7 until the bottom of the rod 5 is inserted into the manual adjustment component, and fix the manual adjustment component;

[0069] c. Then, the processed first cross beam 18 is horizontally placed at the bottom of the upper chord steel bar 25 of each steel bar truss 2, so that the first positioning groove 20 is fitted on the upper chord steel bar 25, and then the second cross beam 19 is placed above the upper chord steel bar 25, so that the second positioning groove 21 is fitted on the upper chord steel bar 25, and the second cross beam 19 is fixedly connected to the first cross beam 18 by the fastener 22;

[0070] d. Finally, the reinforcing rod 23 is sequentially connected between two adjacent first cross beams 18;

[0071] S5. Hoisting and pouring concrete

[0072] a. First, hoist the assembled steel truss floor decking plate onto the floor as a whole for temporary support;

[0073] b. Then pour the concrete and remove the temporary support after the concrete reaches the conditions for demolding.

[0074] The construction method has simple steps, which not only improves the overall strength and stability of the steel truss floor deck, but also facilitates the rapid assembly between the steel trusses 2 and the bottom formwork 1, while improving the connection stability between the steel trusses 2 and reducing the construction difficulty.

[0075] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A construction method for a steel truss floor deck, characterized in that The steps include: S1. Bottom mold and fastening mechanism processing a. First, make a bottom mold of corresponding size, evenly open through holes along the bottom mold, and evenly open plug holes on one side of the bottom mold. The hole diameter of the plug hole is smaller than the hole diameter of the through hole; b. Then, along the bottom surface of the bottom mold, a fixing block is installed between two adjacent through holes along the X direction, and each fixing block is provided with an axial hole; c. According to the telescopic height position of the fastening mechanism and the size of the through hole, the corresponding rotating clamping arms are processed, and arc grooves are symmetrically arranged on the inner side surfaces of two adjacent rotating clamping arms. Each rotating clamping arm is rotatably connected to the corresponding through hole through a shaft rod, and the top and bottom ends of the rotating clamping arms protrude from the top and bottom surfaces of the bottom mold respectively; d. Select a suitable turntable according to the swing amplitude of the rotating clamp arm, connect the turntable to the fixed block through the rotating shaft, make each turntable close to the corresponding fixed block, select a suitable push-pull rod, and rotate the two ends of the push-pull rod to connect to the turntable and the rotating clamp arm respectively; e. Install a manual adjustment component along one end of the rotating shaft. The manual adjustment component is connected to the bottom mold through an insertion rod, and the insertion rod matches the insertion hole; S2. Steel bar truss processing According to the size of the bottom mold, the upper chord steel bars and the lower chord steel bars of corresponding sizes are processed, and the upper chord steel bars are placed on the median perpendicular line of the two adjacent lower chord steel bars. The upper chord steel bars and the lower chord steel bars are fixedly connected by the inclined web reinforcement, so that the upper chord steel bars and the lower chord steel bars and the two adjacent lower chord steel bars are kept parallel to each other; S3. Positioning mechanism processing a. First, according to the layout position of the steel bar truss on the bottom form, a suitable first beam and a second beam are selected, and the first positioning groove and the second positioning groove are respectively formed along the top surface of the first beam and the bottom surface of the second beam. The number of the first positioning groove and the second positioning groove is consistent with the number of the steel bar truss; b. Then select a reinforcing rod of appropriate length, set external threads on both ends of the reinforcing rod, and evenly open threaded holes along the side of the first crossbeam; S4. Assembly of steel truss floor deck a. First, hoist the processed steel bar truss to 5-10cm above the bottom mold, turn the manual adjustment component to make the rotating clamp arm on the fastening mechanism close to the lower chord steel bar of the steel bar truss, then slowly lower the steel bar truss, and turn the manual adjustment component at the same time until the arc groove on the rotating clamp arm clamps and fixes the lower chord steel bar; b. Then insert the rod along the vertical direction of the socket until the bottom of the rod is inserted into the manual adjustment component, and fix the manual adjustment component; c. Then, place the processed first crossbeam horizontally into the bottom of the upper chord steel bars of each steel bar truss, so that the first positioning groove fits the upper chord steel bars, and then place the second crossbeam above the upper chord steel bars, so that the second positioning groove fits the upper chord steel bars, and fix the second crossbeam to the first crossbeam through fasteners; d. Finally, the reinforcing rods are sequentially connected between two adjacent first beams; S5. Hoisting and pouring concrete a. First, hoist the assembled steel truss floor decking plate onto the floor as a whole for temporary support; b. Then pour the concrete and remove the temporary support after the concrete reaches the conditions for demolding.

2. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: In step S1 process a, two adjacent through holes along the X direction are grouped together for assembling the fastening mechanism.

3. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: In step S1 process b, the fixed blocks distributed along the Y direction are located on the same straight line.

4. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: In step S1 process c, the size of the through hole is larger than the size of the rotating clamping arm.

5. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: The two push-pull rods between two adjacent rotating clamp arms in step S1 process d are distributed at 180 degrees.

6. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: In step S1 process e, the manual adjustment assembly includes a rotating arm and a handle, the end of the rotating arm is fixed to the rotating shaft, the handle is vertically connected to the other end of the rotating arm, and a slot is provided on the rotating arm, and the slot matches the insertion rod.

7. The construction method of a steel bar truss floor deck according to claim 1, characterized in that: In step S1 process e, the insertion rod and the insertion hole are connected by threading or clamping.

Images