Auxiliary structure for transporting steel tube web member truss prestress composite floor slab

Abstract

The invention relates to the technical field of composite floor slab transportation, in particular to an auxiliary structure for transporting a steel tube web member truss prestress composite floor slab, which comprises a base plate, the base plate is lapped on a prestress bottom plate, a plurality of upper chord ribs are arranged above the prestress bottom plate, and a hollow steel tube web member truss is fixed between the upper chord ribs and the prestress bottom plate. A plurality of prestressed steel bars are fixedly inserted into the surfaces of the prestressed bottom plates, preformed grooves are formed in the surfaces of the base plates, the upper chord ribs are sleeved with the preformed grooves, lap joint grooves are formed in the top surfaces of the base plates, and when the two prestressed bottom plates are stacked, one prestressed bottom plate is inserted into the lap joint groove of the base plate at the top of the other prestressed bottom plate; the supporting device has the beneficial effects that a good supporting effect is achieved on the prestressed bottom plates stacked on the supporting device, meanwhile, the prestressed bottom plates are limited in the corresponding lap joint grooves, the situation that the prestressed bottom plates swing front and back in the transportation process is effectively avoided, the transportation safety is improved, the damage risk caused by floor shaking is reduced, and the engineering quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of composite floor slab transportation technology, specifically to an auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses. Background Technology

[0002] In the construction industry, prestressed composite floor slabs with steel pipe web trusses are widely used in various building projects due to their advantages such as good structural performance and high construction efficiency. However, many challenges are encountered in the transportation of these prestressed composite floor slabs with steel pipe web trusses.

[0003] Prestressed composite floor slabs typically consist of a prestressed base slab, top chord ribs, and hollow steel pipe web trusses fixed between them. Multiple prestressed reinforcing bars are also inserted and fixed to the surface of the prestressed base slab. During transportation, multiple prestressed composite floor slabs need to be stacked to improve transportation efficiency and reduce costs. However, existing transportation methods lack effective auxiliary structures, leading to numerous problems during stacking and transportation.

[0004] On the one hand, stacked prestressed composite floor slabs are prone to swaying back and forth, lacking effective limiting and supporting devices. This not only increases safety hazards during transportation but may also damage the floor slabs, affecting project quality. On the other hand, during stacking, the lower layer of prestressed composite floor slabs lacks reliable installation and reinforcement measures. The impact force generated when the upper floor slabs are placed, as well as the bumps during transportation, can easily loosen the connection points of the lower floor slabs, even causing auxiliary structures to detach, further affecting transportation safety and floor slab quality. In addition, the stacked auxiliary structures are also prone to misalignment and bumps, lacking effective fixing methods, which also brings inconvenience to transportation. Moreover, additional lifting equipment is required during hoisting, increasing construction costs and operational complexity; after transportation, the disassembled auxiliary structures are piled up haphazardly, making them inconvenient to manage and reuse.

[0005] Therefore, developing an auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses that can effectively solve the above problems is of great practical significance. Summary of the Invention

[0006] The purpose of this invention is to provide an auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses, comprising a pad plate, the pad plate overlapping a prestressed base plate, a plurality of upper chord ribs above the prestressed base plate, a hollow steel pipe web truss fixed between the upper chord ribs and the prestressed base plate, a plurality of prestressed steel bars inserted and fixed to the surface of the prestressed base plate, a reserved groove opened on the surface of the pad plate, the reserved groove being fitted onto the upper chord ribs, an overlap groove opened on the top surface of the pad plate, and when two prestressed base plates are stacked, one prestressed base plate is inserted into the overlap groove of the pad plate on top of the other prestressed base plate; The pad has side grooves and docking slots at both ends of the top surface. The bottom surface of the pad is fixed with an assembly insert plate. After the two pads are stacked, the assembly insert plate at the bottom of one pad is inserted into the docking slot on the top surface of the other pad. The side groove is screwed with a connecting screw rod two, which passes through the assembly insert plate. Both ends of the pad are provided with lifting openings.

[0008] Preferably, the reserved groove is a "T" shaped groove, and the reserved groove corresponds one-to-one with the upper chord rib. The two sides of the pad are provided with installation grooves, and a connecting screw is screwed into the inside of the installation groove. One end of the connecting screw extends into the reserved groove and is screwed onto the surface of the upper chord rib.

[0009] Preferably, the top surface of the reserved groove has a notch, and the top surface of the notch has a through opening. The opening size of the through opening is smaller than the top surface size of the notch. A rubber sheet is fixed between the two parallel sidewalls of the notch. A clamping block is inserted into the through opening. The height of the clamping block is greater than the depth of the through opening, and the bottom surface of the clamping block is fixed to the top surface of the rubber sheet.

[0010] Preferably, the hoisting opening is an elongated oval shape, and two clearance grooves are provided on the top surface of the side groove, which are connected to the hoisting opening.

[0011] Preferably, the width of the docking slot is equal to the thickness of the assembly plate. Each of the two parallel sidewalls of the docking slot has a screw hole one, and the surface of the assembly plate has a screw hole two. After the two pads are stacked, the assembly plate is inserted into the corresponding docking slot, and screw holes one and two correspond to each other. The connecting screw two passes through both screw holes one and two.

[0012] Preferably, when the rubber sheet is in its initial state, the rubber sheet supports the clamping block, and the top of the clamping block extends out of the opening.

[0013] Preferably, after the prestressed base plate is inserted into the corresponding reserved groove, the prestressed base plate pushes the clamping block downwards, the clamping block retracts into the through hole, and the clamping block clamps the rubber sheet between the upper chord rib and the clamping block to produce elastic deformation.

[0014] Preferably, multiple pads are stacked and connected and then placed flat on the ground, or multiple sets of stacked and fixed pads are placed flat on the ground.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The auxiliary structure proposed in this invention for transporting prestressed composite floor slabs with steel pipe web trusses involves creating pre-reserved grooves on the surface of a pad plate that fits onto the upper chord rib, and creating lap grooves on the top surface of the pad plate. When two prestressed slabs are stacked, one prestressed slab is inserted into the lap groove of the pad plate on top of the other prestressed slab. This design provides excellent support for the prestressed slabs stacked on top, while simultaneously confining them within the corresponding lap grooves. This effectively prevents the prestressed slabs from swaying back and forth during transportation, greatly improving transportation safety, reducing the risk of damage caused by slab swaying, and ensuring project quality.

[0016] A notch is made on the top surface of the pre-reserved groove, and an opening is made on the top surface of the notch. A clamping block is inserted into the opening, and a rubber sheet is fixed between the side walls of the notch. When the prestressed base plate is inserted into the pre-reserved groove, the weight of the prestressed base plate will push the clamping block downwards, causing it to retract into the opening and compress the rubber sheet to adhere to the surface of the upper chord rib. The rubber sheet is clamped between the upper chord rib and the clamping block, resulting in elastic deformation. This structure achieves the installation and reinforcement of the lower prestressed base plate while the upper prestressed base plate is stacked. Even if the connecting bolts become loose, the friction and clamping force generated by the elastic deformation of the rubber sheet will prevent the pad from falling off the prestressed base plate, further enhancing the stability during transportation.

[0017] Side grooves and mating slots are cut at both ends of the top surface of the pad, and an assembly insert is fixed to the bottom surface. When two pads are stacked, the assembly insert is inserted into the mating slot, and then the assembly insert is fixed in the mating slot by connecting screws passing through the side grooves, the assembly insert, and the screw holes on the side wall of the mating slot. This design effectively avoids misalignment and bumps between stacked pads, ensuring the overall stability after stacking and making the transportation process more stable and reliable.

[0018] Lifting openings are made at both ends of the pad, and clearance grooves are made on the top surface of the side grooves to connect to the lifting openings. During lifting, the lifting ropes are passed through the lifting openings and overlapped, with the ropes pulled upwards, and the ropes at the joints positioned in the clearance grooves. This design allows the pad to act as a lifting tool, eliminating the need for additional specialized lifting equipment, simplifying the lifting operation process, reducing construction costs, and improving construction efficiency.

[0019] Multiple mats can be stacked and connected together to lay flat on the ground, or multiple sets can be stacked and fixed together before being laid flat. Alternatively, multiple stacked mats can be placed vertically against a wall. This versatile stacking method facilitates the neat stacking of disassembled mats, saves storage space, simplifies management and reuse, and improves resource utilization. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the pad structure of the present invention; Figure 3 This is a schematic diagram of the structure of multiple prestressed base plates with pads installed after stacking according to the present invention; Figure 4 for Figure 3 Sectional view of the structure at point AA; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point C; Figure 7 This is a schematic diagram of the structure after multiple pads are stacked and connected according to the present invention.

[0021] In the diagram: 1. Pad plate; 101. Reserved groove; 102. Overlap groove; 103. Through hole; 104. Notched groove; 105. Installation groove; 106. Lifting through hole; 107. Side groove; 108. Leaving groove; 109. Butt joint slot; 110. Screw hole one; 2. Prestressed base plate; 201. Prestressed steel bar; 202. Upper chord rib; 203. Hollow steel pipe web truss; 3. Rubber sheet; 4. Clamping block; 5. Connecting screw one; 6. Assembled insert plate; 601. Screw hole two; 7. Connecting screw two. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 7This invention provides a technical solution: an auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses, comprising a pad 1, which overlaps a prestressed base slab 2. Multiple upper chord ribs 202 are provided above the prestressed base slab 2. Hollow steel pipe web trusses 203 are fixed between the upper chord ribs 202 and the prestressed base slab 2. Multiple prestressed steel bars 201 are inserted and fixed to the surface of the prestressed base slab 2. A reserved groove 101 is formed on the surface of the pad 1, and the reserved groove 101 is fitted onto the upper chord ribs 203. On the top surface of the pad 1, an overlap groove 102 is provided. When two prestressed base plates 2 are stacked, one prestressed base plate 2 is inserted into the overlap groove 102 of the pad 1 on top of the other prestressed base plate 2. The reserved groove 101 is a "T" shaped groove. The reserved groove 101 corresponds one-to-one with the upper chord rib 202. Both sides of the pad 1 are provided with installation grooves 105. A connecting screw 5 is screwed into the inside of the installation groove 105. One end of the connecting screw 5 extends into the reserved groove 101 and is screwed onto the surface of the upper chord rib 202.

[0024] The purpose of installing the pad 1 on the prestressed base plate 2 is to support the prestressed base plate 2 stacked on top and to limit the prestressed base plate 2 in the corresponding overlap groove 102, so as to prevent the prestressed base plate 2 from swinging back and forth. When installing the pad 1, align the reserved groove 101 on the surface of the pad 1 with the corresponding upper chord rib 202, push the pad 1 a certain distance towards the middle of the prestressed base plate 2, and then tighten the connecting screw 5 to clamp the side wall of the upper chord rib 202, or directly screw the connecting screw 5 onto the side wall of the upper chord rib 202 to brake the pad 1 onto the upper chord rib 202. Similarly, install the pad 1 at the other end of the prestressed base plate 2. It should be noted that when multiple prestressed base plates 2 are stacked, a wooden pad is added to the bottom of the bottommost prestressed base plate 2, or a pad 1 without the splicing insert 6 is added.

[0025] In order to achieve the installation and reinforcement of the lower prestressed base slab 2 while stacking the upper prestressed base slab 2, the following method is proposed: The top surface of the reserved groove 101 is provided with a notch 104, and the top surface of the notch 104 is provided with a through opening 103. The opening size of the through opening 103 is smaller than the top surface size of the notch 104. A rubber sheet 3 is fixed between two parallel sidewalls of the notch 104. A clamping block 4 is inserted into the through opening 103. The height of the clamping block 4 is greater than the depth of the through opening 103. The bottom surface of the clamping block 4 is fixed to the top surface of the rubber sheet 3. When the rubber sheet 3 is in the initial state, the rubber sheet 3 supports the clamping block 4, and the top of the clamping block 4 extends out of the through opening 103. After the prestressed base plate 2 is inserted into the corresponding reserved groove 101, the prestressed base plate 2 pushes the clamping block 4 downward, and the clamping block 4 retracts into the through opening 103. The clamping block 4 clamps the rubber sheet 3 between the upper chord rib 202 and the clamping block 4 to produce elastic deformation.

[0026] After the pad 1 is placed on the prestressed base plate 2 at the bottom, when the prestressed base plate 2 above is hoisted and falls into the overlapping groove 102 on the top surface of the pad 1, due to the weight of the prestressed base plate 2, the prestressed base plate 2 presses down on the clamping block 4 and retracts into the through hole 103. The clamping block 4 also presses the rubber sheet 3 to adhere to the surface of the bottom upper chord rib 202. In this way, the bottom upper chord rib 202 is reinforced and connected to the bottom pad 1. Even if the connecting screw 5 becomes loose, the pad 1 will not fall off the prestressed base plate 2.

[0027] To secure the stacked pads 1, the following proposed method was proposed: The pad 1 has side grooves 107 and docking slots 109 at both ends of its top surface. The bottom surface of the pad 1 is fixed with an assembly insert 6. After two pads 1 are stacked, the assembly insert 6 at the bottom of one pad 1 is inserted into the docking slot 109 on the top surface of the other pad 1. The side groove 107 is screwed with a connecting screw 7, which passes through the assembly insert 6. The width of the docking slot 109 is equal to the thickness of the assembly insert 6. The two parallel side walls of the docking slot 109 are provided with screw holes 110. The surface of the assembly insert 6 is provided with screw holes 601. After two pads 1 are stacked, the assembly insert 6 is inserted into the corresponding docking slot 109, and the screw holes 110 and 601 correspond. The connecting screw 7 passes through the two screw holes 110 and 601.

[0028] After two prestressed base plates 2 with pads 1 installed are stacked, the upper prestressed base plate 2 presses between the two pads 1. At this time, the assembly insert plate 6 is inserted into the corresponding docking slot 109. The connecting screw 7 passes through the screw hole 110 and the screw hole 601 to fix the assembly insert plate 6 in the docking slot 109, thereby avoiding misalignment and bumps between the stacked pads 1.

[0029] To achieve the goal of using pad 1 as a lifting tool, the following was proposed: Both ends of the pad 1 are provided with lifting openings 106; the lifting openings 106 are elongated oval openings, and the top surface of the side groove 107 is provided with two clearance grooves 108, which are connected to the lifting openings 106; after the lifting rope is passed through the lifting openings 106, it is overlapped and the rope body of the lifting rope is pulled upward, at which time the rope body at the node of the lifting rope is in the clearance groove 108.

[0030] To achieve neat stacking of the disassembled pads 1, the following was proposed: Multiple pads 1 can be stacked and connected together and placed flat on the ground; multiple sets of stacked and fixed pads 1 can be stacked flat on the ground; alternatively, multiple stacked and connected pads 1 can be placed vertically against a wall.

[0031] Usage of auxiliary structures used for transporting prestressed composite floor slabs with steel pipe web trusses: Align the T-shaped pre-drilled groove 101 on the surface of the pad 1 with the corresponding upper chord rib 202 on the prestressed base plate 2. Push the pad 1 a short distance toward the center of the prestressed base plate 2. Tighten the connecting screws 5 inside the mounting grooves 105 on both sides of the pad 1, so that one end of the connecting screw 5 extends into the pre-drilled groove 101 and is screwed onto the surface of the upper chord rib 202, or directly screw the connecting screw 5 onto the side wall of the upper chord rib 202, thus securing the pad 1 to the upper chord rib 202. Install the pad 1 at the other end of the prestressed base plate 2 in the same way. When multiple prestressed base plates 2 are stacked, add a wooden block at the bottom of the lowest prestressed base plate 2, or add a pad 1 without the splicing insert 6. The installation and reinforcement of the lower prestressed base plate 2 when stacking the upper prestressed base plate 2: The upper prestressed base plate 2 is hoisted and lowered into the overlapping groove 102 on the top surface of the bottom pad plate 1. Due to the heavy weight of the prestressed base plate 2, it presses down on the clamping block 4, causing the clamping block 4 to retract into the through hole 103. At the same time, the clamping block 4 presses the rubber sheet 3 to adhere to the surface of the bottom upper chord rib 202. The rubber sheet 3 undergoes elastic deformation, thus reinforcing the bottom upper chord rib 202 to the bottom pad plate 1. Even if the connecting screw 5 becomes loose, the pad plate 1 will not fall off the prestressed base plate 2.

[0032] Two prestressed base plates 2, each fitted with a pad 1, are stacked together, with the upper prestressed base plate 2 pressing between the two pads 1. At this time, the assembly insert 6 at the bottom of one pad 1 is inserted into the mating slot 109 on the top surface of the other pad 1. The connecting screw 7 passes through the side groove 107 and through the assembly insert 6. Since screw holes 110 are provided on the two parallel side walls of the mating slot 109, and screw holes 601 are provided on the surface of the assembly insert 6, after the two pads 1 are stacked, screw holes 110 and 601 correspond. The connecting screw 7 passes through the two screw holes 110 and 601, thus fixing the assembly insert 6 in the mating slot 109 and preventing misalignment and vibration between the stacked pads 1.

[0033] When using the pad plate 1 as a lifting tool, the lifting rope is passed through the lifting openings 106 at both ends of the pad plate 1 and then overlapped. The rope body of the traction lifting rope is facing upward, and at this time, the rope body at the node of the lifting rope is in the clearance groove 108 opened on the top surface of the side groove 107.

[0034] Stacking of disassembled pads 1: Place multiple stacked pads 1 flat on the ground. Multiple sets of stacked pads 1 can be placed flat on the ground. Alternatively, multiple stacked pads 1 can be placed vertically against a wall.

[0035] 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. An auxiliary structure for transporting prestressed composite floor slabs with steel pipe web trusses, comprising a pad (1), the pad (1) overlapping a prestressed base plate (2), a plurality of upper chord ribs (202) being provided above the prestressed base plate (2), a hollow steel pipe web truss (203) being fixed between the upper chord ribs (202) and the prestressed base plate (2), and a plurality of prestressed steel bars (201) being inserted and fixed on the surface of the prestressed base plate (2), characterized in that: The surface of the backing plate (1) is provided with a reserved slot (101), the reserved slot (101) is sleeved on the upper chord rib (202), the top surface of the backing plate (1) is provided with a lap joint slot (102), when two prestressed bottom plates (2) are stacked, one prestressed bottom plate (2) is inserted into the lap joint slot (102) of the top backing plate (1) of another prestressed bottom plate (2). The top surface of the backing plate (1) is provided with an edge slot (107) and an abutting insertion slot (109) at both ends, the bottom surface of the backing plate (1) is fixed with a splicing insertion plate (6), after two backing plates (1) are stacked, the splicing insertion plate (6) at the bottom of one backing plate (1) is inserted into the abutting insertion slot (109) of the top surface of another backing plate (1), the inside of the edge slot (107) is screwed with a connecting screw rod two (7), the connecting screw rod two (7) penetrates the splicing insertion plate (6). The both ends of the backing plate (1) are provided with hoisting through holes (106).

2. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 1, characterized in that: The reserved slot (101) is a "T" shaped slot, the reserved slot (101) and the upper chord rib (202) are one-to-one corresponding, the both sides of the backing plate (1) are provided with mounting slots (105), the inside of the mounting slot (105) is screwed with a connecting screw rod one (5), one end of the connecting screw rod one (5) is inserted into the reserved slot (101) and is screwed on the surface of the upper chord rib (202).

3. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 1, characterized in that: The top surface of the reserved slot (101) is provided with a missing slot (104), the top surface of the missing slot (104) is provided with a through hole (103), the size of the slot opening of the through hole (103) is smaller than the size of the top surface of the missing slot (104), the two parallel distributed side walls of the missing slot (104) are fixed with a rubber sheet (3), the inside of the through hole (103) is inserted with a clamping block (4), the height of the clamping block (4) is greater than the depth of the through hole (103), the bottom surface of the clamping block (4) is fixed on the top surface of the rubber sheet (3).

4. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 1, characterized in that: The hoisting through hole (106) is a long circular hole, the top surface of the edge slot (107) is provided with two giving way slots (108), the giving way slots (108) are communicated with the hoisting through hole (106).

5. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 1, characterized in that: The width of the abutting insertion slot (109) is equal to the thickness of the splicing insertion plate (6), the both parallel distributed side walls of the abutting insertion slot (109) are provided with screw holes one (110), the surface of the splicing insertion plate (6) is provided with screw holes two (601), after two backing plates (1) are stacked, the splicing insertion plate (6) is inserted into the corresponding abutting insertion slot (109), the screw holes one (110) and the screw holes two (601) are corresponding, the connecting screw rod two (7) penetrates the two screw holes one (110) and the screw holes two (601).

6. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 3, characterized in that: When the rubber sheet (3) is in the initial state, the rubber sheet (3) supports the clamping block (4), the top end of the clamping block (4) extends out of the through hole (103).

7. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 3, characterized in that: After the prestressed bottom plate (2) is inserted into the corresponding reserved slot (101), the prestressed bottom plate (2) pushes the clamping block (4) downward, the clamping block (4) is retracted into the through hole (103), and the clamping block (4) clamps the rubber sheet (3) between the upper chord rib (202) and the clamping block (4) to produce elastic deformation.

8. The auxiliary structure for transporting the steel pipe web truss pre-stressed composite floor according to claim 1, characterized in that: Multiple backing plates (1) are stacked and connected and then placed on the ground, and multiple groups of stacked and fixed backing plates (1) are placed and stacked on the ground.

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