A UHPC trestle plate and trestle

Abstract

The utility model discloses an UHPC trestle board and trestle, the UHPC trestle board includes upper reinforcement net, lower reinforcement net, seal pipe group and frame, the seal pipe group is composed of several longitudinal arrangement and along transverse spacing arrangement's seal pipe, and seal pipe group is arranged between upper reinforcement net, lower reinforcement net, the frame surrounds the four around of upper reinforcement net, lower reinforcement net and seal pipe group, the UHPC trestle board still includes the UHPC main part that pours UHPC in the space surrounded by frame and bottom form, and upper reinforcement net, lower reinforcement net, seal pipe group all are located in the UHPC main part inside. The concrete main body of UHPC trestle board adopts UHPC and is formed, and adopts hollow structure, is suitable for marine this corrosive environment, and the weight is lighter than ordinary reinforced concrete prefabricated board, reduces the requirement of lower structure bearing.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge engineering technology, specifically to a UHPC trestle board and trestle. Background Technology

[0002] In the field of road and bridge construction, a trestle bridge is a temporary, lightweight bridge structure mainly used to cross obstacles such as rivers, lakes, and canyons, providing passage for subsequent main construction or temporary traffic.

[0003] The deck of a trestle bridge is typically made of patterned steel plate or precast reinforced concrete slab to provide a road surface. However, for corrosive environments such as marine and chemical plants, using patterned steel plate as the bridge deck results in a high total production cycle cost (including maintenance and replacement costs), while using ordinary precast reinforced concrete slabs as the bridge deck places higher demands on the load-bearing capacity of the substructure and increases transportation costs. Utility Model Content

[0004] In view of the above problems, this utility model is proposed to provide a UHPC trestle slab and trestle that overcomes or at least partially solves the above problems. Its concrete main body is cast from UHPC and adopts a hollow structure, making it suitable for the corrosive marine environment. It is lighter than ordinary reinforced concrete precast slabs, reducing the load-bearing requirements on the substructure.

[0005] In a first aspect, this utility model provides a UHPC (Ultra-High-Pressure Polymer) bridge deck. The UHPC bridge deck includes an upper reinforcing mesh, a lower reinforcing mesh, a sealing pipe assembly, and a frame. The sealing pipe assembly consists of several longitudinally arranged sealing pipes spaced laterally, positioned between the upper and lower reinforcing meshes, with each sealing pipe simultaneously tied and fixed to both the upper and lower reinforcing meshes. The frame surrounds the upper and lower reinforcing meshes and the sealing pipe assembly. The UHPC bridge deck also includes a UHPC body formed by casting UHPC within the space enclosed by the frame and bottom template; the upper, lower, and sealing pipe assemblies are all located inside the UHPC body. The upper surface of the UHPC body has several evenly distributed anti-slip grooves.

[0006] In one embodiment, the sealing tube includes a PVC pipe body and two caps that respectively seal the openings at both ends of the PVC pipe body.

[0007] In one embodiment, the sealing tubes are of the same length, and the distance between the two ends of each sealing tube and the frame is within a set range.

[0008] In one embodiment, the frame is generally rectangular and is fixed by welding of channel steel, with the openings of each channel steel facing the inside of the UHPC bridge plate.

[0009] In one embodiment, a plurality of vertically arranged circular tubes are provided at the corners of the UHPC bridge plate, with the two ends of each circular tube being flush with the upper and lower surfaces of the UHPC bridge plate, respectively.

[0010] Secondly, this utility model embodiment provides a trestle. The trestle includes steel pipe piles, pile top load-bearing beams, Bailey bridges, distribution beams, UHPC trestle panels as described in the first aspect, and connecting components for fixing the distribution beams to the UHPC trestle panels; the connecting components include two clamping plates and a U-shaped clamping plate; the U-shaped clamping plate has an upward opening, which forms a limiting constraint on the distribution beam and the two clamping plates respectively adjacent to the two sides of the distribution beam; the two upper flanges of the U-shaped clamping plate are fixedly connected to the frame of the UHPC trestle panel.

[0011] In one embodiment, a rubber pad is provided between the distribution beam and the UHPC trestle plate.

[0012] This utility model embodiment of the trestle features a UHPC trestle panel whose concrete main body (i.e., the UHPC main body) is cast from UHPC and employs a hollow structure, making it suitable for the corrosive marine environment. It is lighter than ordinary reinforced concrete precast panels, reducing the load-bearing requirements on the substructure. Furthermore, the hollow structure gives the UHPC trestle panel better sound absorption and insulation properties, effectively reducing traffic noise and making it more environmentally friendly. The UHPC trestle panel can be prefabricated in a factory, facilitating storage and installation. Attached Figure Description

[0013] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0014] Figure 1 This is a schematic diagram of an exemplary embodiment of the trestle bridge of this utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the UHPC stack bridge plate;

[0016] Figure 3 This is a schematic diagram showing the distribution of round tubes and nuts in a UHPC bridge plate.

[0017] Explanation of reference numerals in the attached drawings: 1. Bailey bridge; 2. Distribution beam; 3. UHPC trestle plate; 4. Connecting component; 5. Upper steel mesh; 6. Lower steel mesh; 7. Frame; 8. Longitudinal reinforcement; 9. Transverse reinforcement; 10. Sealing pipe; 11. UHPC main body; 12. Round pipe; 13. Nut; 14. Clamping plate; 15. U-shaped clamping plate; 16. Rubber pad. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Those skilled in the art can make various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the claims and their equivalents.

[0019] The terms "center," "longitudinal," "transverse," "length," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., mentioned or possibly used in the description of this utility model, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "comprising," "including," and any variations thereof are intended to cover non-exclusive inclusion.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following description of a trestle according to an embodiment of the present invention is with reference to the accompanying drawings.

[0022] See Figure 1According to an embodiment of this utility model, the trestle includes steel pipe piles, a pile-top load-bearing beam, a Bailey bridge 1, a distribution beam 2, a UHPC trestle deck 3, and a connecting assembly 4 for fixing the distribution beam 2 to the UHPC trestle deck 3. The steel pipe piles serve as the foundation, bearing all loads and transferring them to the ground. The pile-top load-bearing beam is installed on top of the steel pipe piles and connects to and supports the superstructure. The Bailey bridge 1 serves as the main beam, erected on the pile-top load-bearing beam. The distribution beam 2 is laid on top of the Bailey bridge 1, evenly distributing the load of the UHPC trestle deck 3 to the Bailey bridge 1. Several UHPC trestle decks 3 are connected together to form a bridge deck, providing a driving surface.

[0023] See now Figure 2 The UHPC trestle panel 3 includes an upper reinforcing mesh 5, a lower reinforcing mesh 6, a sealing tube assembly, and a frame 7. The upper and lower reinforcing meshes 5 and 6 are both formed by longitudinal reinforcing bars 8 and transverse reinforcing bars 9 arranged vertically at designed intervals and connected by binding or welding. The sealing tube assembly consists of several longitudinally arranged sealing tubes 10 spaced along transverse intervals, positioned between the upper and lower reinforcing meshes 5 and 6, with each sealing tube 10 simultaneously bound and fixed to both. Each sealing tube 10 may include a PVC pipe body and two caps that respectively seal the openings at both ends of the PVC pipe body. The interior of each sealing tube 10 forms a closed space.

[0024] The frame 7 surrounds the upper reinforcing mesh 5, the lower reinforcing mesh 6, and the sealing tube assembly. The frame 7 can be welded and fixed from channel steel, with the openings of each channel steel facing the inside of the UHPC gantry plate 3. The frame 7 is generally rectangular. Preferably, all sealing tubes 10 have the same length, and the distance between the two ends of each sealing tube 10 and the frame 7 is within a set range.

[0025] The UHPC trestle 3 also includes a UHPC body 11 formed by casting UHPC (Ultra-High Performance Concrete) in the space surrounded by the frame 7 and the bottom template. The upper steel mesh 5, the lower steel mesh 6, and the sealing pipe assembly are all located inside the UHPC body 11.

[0026] UHPC's core advantages include:

[0027] 1. Ultra-high strength: Enables thin-walled design, reducing structural weight.

[0028] 2. Extreme durability: Excellent resistance to chloride ion penetration, strong resistance to ultraviolet radiation and seawater erosion, enabling long-term service in the corrosive marine environment and significantly extending the structural lifespan.

[0029] 3. Good toughness: The addition of fibers prevents it from breaking suddenly when subjected to stress, giving it a certain degree of deformation ability and higher safety.

[0030] 4. Flexible design: It has good fluidity and can be used to cast components with complex shapes.

[0031] The upper surface of the UHPC body 11 has several evenly distributed anti-slip grooves. The inner side of the bottom template has several evenly distributed strip-shaped protrusions. The anti-slip grooves can be formed by the solidification and hardening of the cast UHPC around the strip-shaped protrusions.

[0032] See now Figure 3 The UHPC bridge deck 3 has several vertically arranged circular tubes 12 at its corners, with both ends of each tube 12 flush with the upper and lower surfaces of the UHPC bridge deck 3, respectively. Steel plates (with through holes for connecting) and bolts passing through the circular tubes 12 can connect and fix adjacent UHPC bridge decks 3 to form a bridge deck. The bolts passing through the circular tubes 12 can also be used to fix auxiliary facilities such as guardrails (with corresponding through holes) and lighting systems (with corresponding through holes) to the UHPC bridge deck 3. The circular tubes 12 can be pre-embedded before UHPC pouring construction, i.e., the circular tubes 12 are located within the space surrounded by the frame 7 and the bottom template.

[0033] The UHPC trestle plate 3 can also have several nuts 13 pre-embedded. After the eye bolts are threadedly connected to the nuts 13, the UHPC trestle can be lifted and moved using lifting equipment. The nuts 13 can be arranged as follows: two nuts 13 are arranged near one-quarter of the total length of the UHPC trestle plate 3, and two nuts 13 are arranged near three-quarters of the total length of the UHPC trestle plate 3.

[0034] In one embodiment, the UHPC trestle 3 has a length of 8m, a width of 2m, and a thickness of 0.1m. The sealing pipe 10 has an outer diameter of 40mm, and the spacing between adjacent sealing pipes 10 is 30mm. The longitudinal reinforcing bars 8 have a length of 7988mm and a nominal diameter of 10mm, and the transverse reinforcing bars 9 have a length of 1978mm and a nominal diameter of 8mm. The upper reinforcing mesh 5 is 10mm away from the upper surface of the UHPC trestle 3, and the lower reinforcing mesh 6 is 16mm away from the lower surface of the UHPC trestle 3.

[0035] Now return Figure 1The connecting assembly 4 includes two clamping plates 14 and a U-shaped clamping plate 15. The U-shaped clamping plate 15 has an upward opening and provides limiting constraints on the distribution beam 2 and the two clamping plates 14 adjacent to the two sides of the distribution beam 2. The two upper flanges of the U-shaped clamping plate 15 are fixedly connected to the frame 7 of the UHPC bridge plate 3, such as by welding. Preferably, rubber pads 16 are provided between the distribution beam 2 and the UHPC bridge plate 3, and between the clamping plates 14 and the UHPC bridge plate 3.

[0036] In this embodiment, the UHPC trestle panel 3's concrete main body (i.e., UHPC main body 11) is made of UHPC casting and features a hollow structure, making it suitable for the corrosive marine environment. It is lighter than ordinary reinforced concrete precast panels, reducing the load-bearing requirements on the substructure. Furthermore, the hollow structure gives the UHPC trestle panel 3 better sound absorption and insulation properties, effectively reducing traffic noise and making it more environmentally friendly. The UHPC trestle panel 3 can be prefabricated in a factory, facilitating storage and installation.

Claims

1. A UHPC stack bridge board, characterized in that: The system includes an upper reinforcing mesh, a lower reinforcing mesh, sealing pipe assemblies, and a frame. The sealing pipe assemblies consist of several longitudinally arranged sealing pipes spaced laterally, positioned between the upper and lower reinforcing meshes, with each sealing pipe simultaneously tied and fixed to both meshes. The frame surrounds the upper and lower reinforcing meshes and the sealing pipe assemblies. The UHPC trestle also includes a UHPC body formed by casting UHPC within the space enclosed by the frame and bottom template. The upper, lower, and sealing pipe assemblies are all located inside the UHPC body. The upper surface of the UHPC body has several evenly distributed anti-slip grooves.

2. The UHPC stack bridge board according to claim 1, characterized in that: The sealing tube includes a PVC pipe body and two caps that respectively seal the openings at both ends of the PVC pipe body.

3. The UHPC stack bridge board according to claim 1, characterized in that: All sealing tubes are of the same length, and the distance between the two ends of each sealing tube and the frame is within the set range.

4. The UHPC stack bridge board according to claim 1, characterized in that: The frame is generally rectangular and is made of channel steel welded together, with the openings of each channel steel facing the inside of the UHPC bridge plate.

5. The UHPC stack bridge according to any one of claims 1 to 4, characterized in that: The UHPC bridge plate has several vertically arranged circular tubes at its corners, with the two ends of each circular tube being flush with the upper and lower surfaces of the UHPC bridge plate, respectively.

6. A trestle bridge, characterized in that: The system includes steel pipe piles, pile top load-bearing beams, Bailey bridges, distribution beams, UHPC trestle panels as described in any one of claims 1 to 5, and a connecting assembly for fixing the distribution beams to the UHPC trestle panels; the connecting assembly includes two clamping plates and a U-shaped clamping plate; the U-shaped clamping plate has an upward opening and provides limiting constraints on the distribution beams and the two clamping plates respectively adjacent to the two sides of the distribution beams; both upper flanges of the U-shaped clamping plate are fixedly connected to the frame of the UHPC trestle panels.

7. The trestle bridge according to claim 6, characterized in that: A rubber pad is installed between the distribution beam and the UHPC trestle plate.

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