Novel suspension bridge anchorage front anchor chamber prefabricated top plate

Abstract

The utility model discloses a novel suspension bridge anchorage front anchor chamber prefabricated roof which comprises side walls, a plurality of prefabricated splicing cover plates, a cast-in-place layer, cushion blocks and side wall check blocks, the side wall check blocks are formed at the top ends of the side walls in a pouring mode, and the prefabricated splicing cover plates are connected to the two side walls in a lap joint mode along the two ends of the transverse bridge direction. The cast-in-place layer is poured on the multiple prefabricated splicing cover plates and fills a gap between every two adjacent prefabricated splicing cover plates, concave grooves are formed in the bottoms of the prefabricated splicing cover plates, and the side wall check blocks are embedded in the concave grooves. According to the novel suspension bridge anchorage front anchor chamber prefabricated top plate, the prefabricated splicing cover plates are spliced to form the top plate, compared with a traditional cast-in-place concrete top plate, the top plate does not need to be additionally provided with a support, construction cost is saved, construction risks are reduced, and interference to a main cable strand is avoided; compared with a steel-concrete composite structure top plate, construction of a large number of embedded parts is not needed, later-period anti-corrosion coating is not needed, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension bridge construction, in particular to a novel prefabricated top plate of an anchor chamber before anchoring of a suspension bridge. Background Art

[0002] Long-span bridges mainly adopt the suspension bridge structure, which is usually composed of main cables, main beams, cable towers, anchors and other components. As the anchor body of the main cable, the anchor is one of the main load-bearing components of the suspension bridge. Anchors are generally divided into gravity anchors and tunnel anchors. Gravity anchors usually consist of anchor blocks, piers, anchor chambers, foundations and other components. The front anchor chamber is a closed space structure that protects the main cable strands. The construction of the front anchor chamber top plate structure directly affects the quality of the main cable strands and the construction period of the entire bridge.

[0003] At present, the top plate of the anchor chamber before anchoring generally adopts cast-in-place concrete structure or steel-concrete composite structure. The cast-in-place concrete structure is cast in one time, with good integrity and economy, but it needs to set up a bracket during the forming process. The installation and removal of the bracket is risky, and it is easy to conflict with the main cable strands, pollute the main cable strands, and the construction efficiency is low. The steel-concrete composite structure does not require a bracket, and the steel beam processing and lifting are convenient, and the construction efficiency is high, but there are more embedded parts, the amount of steel used is large, the later anti-corrosion maintenance is cumbersome, and the cost is expensive.

[0004] In view of this, it is necessary to propose a new type of prefabricated top plate of the anchor chamber before the anchorage of the suspension bridge to solve the above defects. Utility Model Content

[0005] The main purpose of the utility model is to provide a new type of prefabricated top plate of the anchor chamber before the anchoring of the suspension bridge, aiming to solve the problems that the existing cast-in-place concrete structure needs to set up a bracket, which will conflict with the main cable strands and has low construction efficiency, or uses a steel-concrete composite structure with a large number of embedded parts, a large amount of steel, and cumbersome later anti-corrosion maintenance and high cost.

[0006] To achieve the above-mentioned purpose, the utility model provides a new type of prefabricated top plate of the anchor chamber before anchoring of the suspension bridge, including two oppositely arranged side walls, a plurality of prefabricated spliced ​​cover plates, a cast-in-place layer and a side wall block, the side wall block is cast and formed at the top of the side wall, the two ends of the plurality of prefabricated spliced ​​cover plates are overlapped on the two side walls along the transverse direction of the bridge, the cast-in-place layer is cast on the plurality of prefabricated spliced ​​cover plates and fills the gap between two adjacent prefabricated spliced ​​cover plates, a recessed groove is formed at the bottom of the prefabricated spliced ​​cover plates, and the side wall block is embedded in the recessed groove.

[0007] Preferably, the prefabricated spliced ​​cover plate comprises a hollow plate and two plate bottom blocks, the hollow plate and the two plate bottom blocks are integrally cast and formed, and the plate bottom blocks are located on both sides of the side wall blocks.

[0008] Preferably, the edge of each hollow slab is recessed to form a splicing groove, and the splicing grooves between two adjacent hollow slabs are combined to form a hinged joint, and the cast-in-place layer is cast on the upper layer of the hollow slab and filled in the hinged joint.

[0009] Preferably, connecting steel bars are arranged in the hinged joint, and the connecting steel bars are overlapped between two adjacent prefabricated spliced ​​cover plates.

[0010] Preferably, at least one hollow hole is provided inside the hollow plate, and the hollow hole passes through both ends of the hollow plate.

[0011] Preferably, there are two hollow holes, each of which has a diameter of 20-30 cm, and a hole distance between the two hollow holes is 40-45 cm.

[0012] Preferably, the height of the hollow plate is 40-60 cm.

[0013] Preferably, the cushion block is a rubber cushion block.

[0014] Preferably, a steel mesh is laid in the cast-in-place layer.

[0015] Preferably, the thickness of the cast-in-place layer is 8-12 cm.

[0016] Preferably, the prefabricated top plate of the anchor chamber before the anchoring of the novel suspension bridge also includes a pad block, which is laid at the position where the side wall contacts the prefabricated spliced ​​cover plate, and the side wall stop block contacts the prefabricated spliced ​​cover plate; wherein the pad block is a rubber pad.

[0017] Compared with the prior art, the novel prefabricated top plate of the anchor chamber before anchoring of a suspension bridge provided by the utility model has the following beneficial effects:

[0018] The prefabricated top plate of the anchor chamber before the anchoring of the novel suspension bridge provided by the utility model is formed by splicing a plurality of prefabricated splicing cover plates on two side walls. Compared with the traditional cast-in-place concrete top plate, the top plate does not need to set up additional brackets during the construction process, which saves a lot of construction costs, reduces construction risks, and avoids interference with the main cable strands. Compared with the steel-concrete composite structure top plate, it does not require the construction of a large number of embedded parts. The splicing construction method using prefabricated splicing cover plates makes the construction simpler, does not require subsequent anti-corrosion coating, and has a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A cross-sectional view of a prefabricated top plate of an anchor chamber in front of a new type of suspension bridge provided by the utility model;

[0021] Figure 2 for Figure 1 The cross-section of the prefabricated top plate of the anchor chamber before the anchorage of the new type of suspension bridge is shown;

[0022] Figure 3 for Figure 2 The cross-sectional view along AA is shown;

[0023] Figure 4 for Figure 3 A cross-sectional view of the prefabricated spliced ​​cover panel shown;

[0024] Figure 5 for Figure 1 An enlarged view of the structure of part B is shown;

[0025] Figure 6 for Figure 1 An enlarged view of the structure of part C is shown;

[0026] Figure 7 for Figure 2 An enlarged view of the structure of part D is shown.

[0027] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] See also Figure 1-Figure 3 The utility model provides a new type of prefabricated top plate of the anchorage chamber before anchoring of a suspension bridge. The new type of prefabricated top plate of the anchorage chamber before anchoring of a suspension bridge comprises two oppositely arranged side walls 1, a plurality of prefabricated spliced ​​cover plates 2, a cast-in-place layer 3 and a side wall block 4, wherein the side wall block 4 is cast and formed at the top of the side wall 1, and the two ends of the plurality of prefabricated spliced ​​cover plates 2 are overlapped on the two side walls 1 along the transverse bridge direction, and the cast-in-place layer 3 is cast on the plurality of prefabricated spliced ​​cover plates 2 and fills the gap between two adjacent prefabricated spliced ​​cover plates 2, and a recessed groove 21 is formed at the bottom of the prefabricated spliced ​​cover plates 2, and the side wall block 4 is embedded in the recessed groove 21 to clamp and position the prefabricated spliced ​​cover plates 2. A roof is formed by splicing a plurality of prefabricated splicing cover plates 2 on two side walls 1. Compared with a traditional cast-in-place concrete roof plate, the roof plate does not require additional brackets during the construction process, thereby saving a large amount of construction costs, reducing construction risks, and avoiding interference with the main cable strands. Compared with a steel-concrete composite structure roof plate, a large number of embedded parts are not required for construction. The splicing construction method using prefabricated splicing cover plates makes the construction simpler, does not require subsequent anti-corrosion coating, and has a lower cost.

[0033] Furthermore, the prefabricated splicing cover plate 2 includes a hollow plate 23 and two bottom block blocks 25, the hollow plate 23 and the two bottom block blocks 25 are cast and formed as one piece, and the side wall block 4 is cast and formed on the top surface of the side wall 1. When the prefabricated splicing cover plate 2 is built on the side wall 1, the bottom block 25 is located on both sides of the side wall block 4, so that the prefabricated splicing cover plate 2 can be fixed on the side wall block 4, thereby enhancing the positioning performance of the prefabricated splicing cover plate 2.

[0034] Furthermore, both side edges of each hollow slab 23 are recessed toward the center line to form a splicing groove 5, and the splicing grooves 5 between two adjacent hollow slabs 23 are combined to form a hinged joint 6, and the cast-in-place layer 3 is cast on the upper layer of the hollow slab 23 and filled in the hinged joint 6. A hinged joint 6 structure is provided between the prefabricated spliced ​​cover plates 2, and steel bars are arranged in the hinged joint 6, and cast together with the slab top concrete, so as to improve the overall performance of the front anchor chamber top plate.

[0035] It can be understood that in order to enhance the connection performance between the prefabricated spliced ​​cover plates 2 , connecting steel bars are arranged in the hinged joint 6 , and the connecting steel bars are overlapped between two adjacent prefabricated spliced ​​cover plates 2 .

[0036] like Figure 3 and Figure 4 As shown, at least one hollow hole 27 is provided inside the hollow plate 23, and the hollow hole 27 runs through both ends of the hollow plate 23. The hollow hole 27 in the hollow plate 23 is formed during casting, and the formation of the hollow hole 27 reduces the overall weight of the cover plate while meeting the strength requirement, thereby reducing the weight of the overall top plate.

[0037] Specifically, there are two hollow holes 27 , the diameter of each hollow hole 27 is 20-30 cm, and the hole distance between the two hollow holes 27 is 40-45 cm.

[0038] The height of the hollow slab 23 is 40-60 cm. That is, the height of the hollow slab 23 can be 40 cm, 45 cm, 50 cm, 55 cm or 60 cm. Preferably, in this embodiment, the height of the hollow slab 23 is 50 cm. It can be understood that the height and reinforcement of the hollow slab 23 can be determined according to the force calculation of the span of the front anchor chamber.

[0039] As a preferred embodiment of the utility model, the prefabricated top plate of the anchor chamber before the anchoring of the new suspension bridge also includes a cushion block 7, which is laid at the position where the side wall 1 contacts the prefabricated spliced ​​cover plate 2, and the side wall block 4 contacts the prefabricated spliced ​​cover plate 2. Specifically, in this embodiment, the cushion block 7 is a rubber cushion block. A space of 1 to 2 cm is reserved between the bottom block 25 and the side wall block. The rubber cushion block 7 is laid at the position where the prefabricated spliced ​​cover plate 2 contacts the side wall 1 to reduce the impact force when the cover plate is hoisted to the top of the side wall 1, which plays a buffering role, and can also increase the friction between the contact surfaces and improve the positioning effect.

[0040] As a preferred embodiment of the utility model, a steel mesh is laid in the cast-in-place layer 3. The steel mesh plays a role in preventing cracks, resisting the restraining stress caused by the shrinkage of concrete and temperature changes in the cast-in-place slab, protecting the concrete layer, and also strengthening the connection performance between the cover plates and the overall strength of the top plate.

[0041] like Figure 3 As shown, the prefabricated spliced ​​cover plate 2 is used as a bottom mold, and a cast-in-place concrete layer is cast on the top, and the concrete layer is a cast-in-place layer 3. Specifically, the thickness of the cast-in-place layer 3 is 8-12 cm. That is, the thickness of the cast-in-place layer 3 laid on the prefabricated spliced ​​cover plate 2 can be 8 cm, 9 cm, 10 cm, 11 cm or 12 cm. Preferably, in this embodiment, the thickness of the cast-in-place layer 3 is 10 cm.

[0042] like Figure 5 As shown, a water stop strip 15 should be provided between the prefabricated spliced ​​cover plate 2 and the bottom top plate 10 of the front anchor chamber, the side wall 1, and the front wall 11 to effectively prevent rainwater from flowing into the front anchor chamber 12.

[0043] like Figure 5-Figure 7 As shown, a plurality of the prefabricated cover plates 2 are spliced ​​together to form an integral top plate, one end of the top plate along the bridge direction is built on the top plate 10 at the bottom of the front anchor chamber, and the other end is built on the front wall 11 of the front anchor chamber, forming a closed front anchor chamber structure together with the side walls.

[0044] As another embodiment of the utility model, the construction method of the prefabricated top plate of the anchor chamber before anchoring of the novel suspension bridge comprises the following steps:

[0045] Step 1: The prefabricated beam factory prefabricates the prefabricated spliced ​​cover plate 2 , and prefabricates a hollow hole 27 in the hollow plate 23 of the prefabricated spliced ​​cover plate 2 .

[0046] Step 2: The top plate 10 at the bottom of the front anchor chamber, the side wall 1 and the side wall block 4, and the front wall 11 are cast on site. By measuring and setting out, the positions of the cushion block 7 and the water stop 15 are accurately positioned, and the rubber cushion block 7 and the water stop are pasted.

[0047] Step 3: According to the on-site construction conditions and construction requirements, select a crane and hoisting equipment of appropriate specifications to hoist and install the prefabricated spliced ​​cover plate 2 in sequence.

[0048] Step 4: Install the steel bars of the hinged joints 6 between the two prefabricated spliced ​​cover plates, and install the anti-cracking steel mesh of the cast-in-place layer 3.

[0049] Step 5: After the reinforcement is tied, pour the concrete of the hinged joint 6 and the cast-in-place layer 3.

[0050] Step 6: Curing of concrete to make it stronger.

[0051] The novel construction method of the prefabricated top plate of the anchor chamber before the anchoring of the suspension bridge facilitates the construction of the top plate of the anchor chamber before the anchoring of the suspension bridge, thereby improving the construction efficiency of the top plate of the anchor chamber before the anchoring of the suspension bridge.

[0052] The prefabricated top plate of the anchor chamber before the anchoring of the new suspension bridge provided by the utility model is formed by splicing a plurality of prefabricated prefabricated splicing cover plates 2 on two side walls 1. Compared with the traditional cast-in-place concrete top plate, the top plate does not need to set up additional brackets during the construction process, which saves a lot of construction costs, reduces construction risks, and avoids interference with the main cable strands. Compared with the steel-concrete composite structure top plate, it does not require the construction of a large number of embedded parts. The splicing construction method using the prefabricated splicing cover plates 2 makes the construction simpler, does not require subsequent anti-corrosion coating, and has a lower cost.

[0053] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new type of prefabricated top plate of the anchorage chamber before anchoring of a suspension bridge, characterized in that: It includes two oppositely arranged side walls, a plurality of prefabricated spliced ​​cover plates, a cast-in-place layer and a side wall block. The side wall block is cast and formed at the top of the side wall. The two ends of the plurality of prefabricated spliced ​​cover plates are overlapped on the two side walls along the transverse bridge direction. The cast-in-place layer is cast on the plurality of prefabricated spliced ​​cover plates and fills the gap between two adjacent prefabricated spliced ​​cover plates. A recessed groove is formed at the bottom of the prefabricated spliced ​​cover plates, and the side wall block is embedded in the recessed groove.

2. The prefabricated top plate of the anchorage chamber before anchoring of the new type suspension bridge according to claim 1 is characterized in that: The prefabricated spliced ​​cover plate includes a hollow plate and two plate bottom blocks. The hollow plate and the two plate bottom blocks are cast in one piece. The plate bottom blocks are built on both sides of the side wall blocks.

3. The prefabricated top plate of the anchorage chamber before anchoring of the new type suspension bridge according to claim 2 is characterized in that: The edge of each hollow slab is recessed to form a splicing groove, and the splicing grooves between two adjacent hollow slabs are combined to form a hinged joint. The cast-in-place layer is cast on the upper layer of the hollow slab and filled in the hinged joint.

4. The prefabricated top plate of the anchorage chamber before anchoring of the new type suspension bridge according to claim 3 is characterized in that: Connecting steel bars are arranged in the hinged joint, and the connecting steel bars are overlapped between two adjacent prefabricated spliced ​​cover plates.

5. The prefabricated top plate of the anchorage chamber before anchoring of the new type suspension bridge according to claim 2 is characterized in that: At least one hollow hole is arranged inside the hollow plate, and the hollow hole passes through two ends of the hollow plate.

6. The prefabricated top plate of the anchorage chamber before anchoring of the new type suspension bridge according to claim 5 is characterized in that: There are two hollow holes, each of which has a diameter of 20-30 cm, and a hole distance between the two hollow holes is 40-45 cm.

7. The prefabricated top plate of the anchorage chamber before anchoring of a new type of suspension bridge according to claim 2 is characterized in that: The height of the hollow plate is 40-60 cm.

8. The prefabricated top plate of the anchorage chamber before anchoring of a new type of suspension bridge according to claim 1 is characterized in that: A steel mesh is laid in the cast-in-place layer.

9. The novel prefabricated top plate of the anchorage chamber before anchoring of a suspension bridge according to claim 1 is characterized in that: The thickness of the cast-in-place layer is 8-12 cm.

10. The novel prefabricated top plate of the anchorage chamber before anchoring of a suspension bridge according to any one of claims 1 to 9, characterized in that: It also includes a cushion block, which is laid at the position where the side wall contacts the prefabricated spliced ​​cover plate, and the side wall stopper contacts the prefabricated spliced ​​cover plate; Wherein, the cushion block is a rubber cushion block.

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