High-speed split segment replaceable modular bridge expansion joint

Abstract

The application discloses a high-speed split segment easily-replaced modular bridge expansion joint, which comprises two supporting boxes arranged correspondingly on two sides, supporting beams correspondingly arranged between the two supporting boxes, middle beams correspondingly arranged on the upper ends of the supporting beams, side beams correspondingly arranged on the two sides of the middle beams, and a plurality of evenly-spaced anchoring components arranged between the adjacent supporting boxes and used for supporting and fixing the side beams on the two sides through the anchoring components. The expansion joint can be quickly replaced and damaged elements can be replaced during operation, and the expansion joint can be used in the construction stage and the operation and maintenance stage. The expansion joint does not need to be closed for a long time, so that the traffic pressure can be relieved and the influence on the driving safety can be reduced. The expansion joint can change the mode of the whole replacement according to the original type and original number, so that the economic and social costs can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of telescopic device, in particular to a high-speed split segment easy-to-replace modular bridge telescopic device. BACKGROUND

[0002] In the prior art, the bridge telescopic device is a key component of the bridge movement, is called the "bridge joint", is the main component of the bridge load, rotation and displacement, and is the structure that is more prone to wear, fatigue and disease in the bridge.

[0003] The main diseases of the traditional modular telescopic device are the beam fracture and elastic element damage in the support and displacement system, the design does not consider the problem of later maintenance, and the construction joint space is small, so that personnel cannot enter from the lower part; when the vulnerable parts are aging, maintenance cannot be carried out in time, and only the whole can be replaced, causing great material waste; and the main human and time consumption in the maintenance construction process is in the chiseling of the anchoring concrete, which is time-consuming and laborious; when the anchoring area concrete is excavated, noise and dust cause environmental pollution, and traffic control is needed for a long time, which makes the already congested traffic worse.

[0004] And frequent maintenance seriously damages the beam end, and further affects the service life of the main structure of the beam body, especially in the case that only the telescopic device profile steel is damaged and the anchoring concrete is good, which is a waste of resources; even if fast-drying high-strength concrete is used during maintenance and replacement, the traffic closure time is generally not less than 72 hours, the social influence and traffic pressure are huge, and the social cost is extremely high.

[0005] Therefore, in order to solve the above problems, a high-speed split segment easy-to-replace modular bridge telescopic device for convenient maintenance and replacement is needed. SUMMARY

[0006] The purpose of the present application is to solve the problems existing in the prior art, and to provide a high-speed split segment easy-to-replace modular bridge telescopic device; the technical scheme is as follows:

[0007] A high-speed split segment easy-to-replace modular bridge telescopic device, comprising two side corresponding support boxes, corresponding support boxes are installed between the two sides, and the upper end of the support beam is correspondingly installed with an intermediate beam, and the two sides of the intermediate beam are provided with position corresponding side beams, and a plurality of evenly spaced anchor assemblies are arranged between adjacent support boxes, and the two side beams are supported and fixed by the anchor assemblies.

[0008] The intermediate beam is located between the two side supporting boxes, the upper end of the supporting box is further provided with a detachable top cover plate, and the side beams are further provided with separate beam bodies separated from the side beams, the position of the separate beam body corresponds to the position of the top cover plate at the upper end of the supporting box, and the separate beam body is integrally welded with the top cover plate, when the top cover plate is detached, the separate beam body is also detached.

[0009] Further, the upper end of the top cover plate is flush with the upper end of the side beam and the upper end of the intermediate beam.

[0010] Further, four vertical elongated screw seats are arranged in the supporting box, the top cover plate is detachably mounted on the supporting box through the elongated screw seat and the matched bolt, and a rubber waterproof gasket is arranged at the position of the bolt.

[0011] Further, the upper end and the lower end of the supporting beam in the supporting box are both provided with supporting elastic elements.

[0012] Further, a rib plate is arranged between the supporting beam and the intermediate beam, and the intermediate beam is fixed to the supporting beam through the rib plate.

[0013] Further, a shear pin is arranged on the supporting box.

[0014] Further, the bridge expansion device is of a split segment structure, and each 7.5m is set as a segment.

[0015] Beneficial effects: the present application has the following beneficial effects:

[0016] 1) The expansion device of the present application considers operation and maintenance stage from the construction stage, realizes the purpose of quickly replacing the expansion device and damaged elements during operation;

[0017] 2) The expansion device of the present application does not need to close the traffic for a long time, can relieve the traffic pressure and reduce the influence on driving safety;

[0018] 3) The expansion device of the present application can change the way of overall removal and replacement according to the original type and model, reduce the economic and social cost;

[0019] 4) The expansion device of the present application can reduce the consumption of manpower and time in the construction process of maintenance and replacement according to the original way;

[0020] 5) The device can effectively reduce the environmental pollution caused by noise and dust when the concrete in the anchor area is removed, and can correspondingly change the original frequent maintenance and serious damage to the concrete structure at the end of the beam body, reduce the damage to the service life of the main structure of the bridge. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural diagram of the present application.

[0022] Figure 2 For Figure 1 A-A sectional view;

[0023] Figure 3 Supporting box structure in the present application. DETAILED DESCRIPTION

[0024] The present application will be further illustrated below in conjunction with the drawings and specific embodiments, which are implemented on the premise of the technical scheme of the present application, and it should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application.

[0025] As Figure 1 , Figure 2 and Figure 3 shown, a high-speed split segment replaceable modular bridge expansion joint comprises two side corresponding supporting boxes 5, two side corresponding supporting boxes 5 are correspondingly installed with supporting beams 6, the upper end of the supporting beam 6 is correspondingly installed with an intermediate beam 7, and the two sides of the intermediate beam 7 are provided with position corresponding side beams 8, and a plurality of evenly spaced anchor assemblies 12 are further provided between adjacent supporting boxes 5, and the two side beams 8 are supported and fixed through the provided anchor assemblies 12.

[0026] The intermediate beam 7 is located between the two side supporting boxes 5, and the upper end of the supporting box 5 is further provided with a detachable top cover plate 1, and the two side beams 8 are further provided with a split beam body 81 separated from the side beam 8, the split beam body 81 is located corresponding to the position of the top cover plate 1 at the upper end of the supporting box 5, and the split beam body 81 and the top cover plate 1 are welded into one body, when the top cover plate 1 is detached, the split beam body 81 is also detached.

[0027] The upper end of the top cover plate 1 is flush with the upper end of the side beam 8 and the upper end of the intermediate beam 7; four vertical elongated screw seats 2 are provided in the supporting box 5, the top cover plate 1 is detachably installed on the supporting box 5 through the elongated screw seat 2 and the matching bolt 3; and a rubber waterproof gasket 4 is further provided at the position where the bolt 3 is installed.

[0028] The upper end and the lower end of the supporting beam 6 in the supporting box 5 are correspondingly provided with supporting elastic elements 10; a rib plate 9 is further installed between the supporting beam 6 and the intermediate beam 7, the intermediate beam 7 is fixed on the supporting beam 6 through the rib plate 9; a shear pin 11 is further installed on the supporting box 5; the bridge expansion joint is a split segment structure, and each 7.5m is set as a segment.

[0029] The device exposes the support box body of the traditional integral buried in concrete to the road surface, and the top cover plate of the support box body is exposed to the surface of the concrete, and the top cover plate is connected by high-strength bolts instead of being integrally welded, so that the top cover plate is changed from being closed by welding to being openable, and buffer materials are arranged around the top cover plate to prevent the surrounding concrete from cracking.

[0030] The support box body is provided with elongated screw seats at four corners, which are fixed to the four corners of the box body by welding, so as to improve the overall connection strength of the bolts, and the top cover plate is connected to the support box body by bolts, and the screw cap is provided with a rubber waterproof gasket to prevent rainwater from penetrating into the box body through the gap between the bolts, so as to achieve the effect of sealing and waterproofing.

[0031] The entire telescopic device is processed in segments, each segment being 7.5 m long (2-lane width), so as to facilitate replacement according to the length of the lane; the overall strength is improved by adding displacement control boxes and reducing the distance between the control boxes; the distance between the outermost control box of each segment and the end of the segment is reduced, thereby reducing the cantilever length of the intermediate beam, reducing the rebound phenomenon of the intermediate beam caused by the compression bending of the beam end due to the pulling load, and sealing the connection between the intermediate beams of each segment with a silicone-based adhesive material during installation to achieve the purpose of waterproofing.

[0032] In the device, the side beam at the position of the support box is cut off and separated, and the separated beam body after cutting is welded with the top cover plate at the upper end of the support box to form an integral whole, which is convenient for opening as a whole, and the cut-off part of the side beam is sealed with a silicone-based adhesive material during installation to achieve the purpose of waterproofing.

[0033] In the device, the combination part of the support beam and the intermediate beam in the support box body is provided with a rib plate and welded for structural reinforcement design to improve the redundancy of the intermediate beam; and the support elastic element is optimized in design, the structure size of the elastic element is increased, and the mechanical properties of the elastic element are improved to enhance the fatigue life of the elastic element, and the maintenance unit is advised to replace the period, so as to realize preventive maintenance.

[0034] The above specific embodiments are only a preferred embodiment of the present application, and are not intended to limit the implementation and scope of claims of the present application. Any equivalent changes and modifications made in accordance with the scope of the patent protection of the present application should be included in the scope of the patent application.

Claims

1. A high-speed, modular bridge expansion joint with easily replaceable split segments, characterized in that: It includes support boxes (5) arranged on both sides, support beams (6) are installed between the support boxes (5) on both sides, and a middle beam (7) is installed on the upper end of the support beam (6). Side beams (8) are arranged on both sides of the middle beam (7), and several evenly spaced anchoring components (12) are arranged between adjacent support boxes (5). The side beams (8) on both sides are supported and fixed by the anchoring components (12). The intermediate beam (7) is located between the two support boxes (5), and the upper end of the support box (5) is also provided with a detachable top cover plate (1), and the side beams (8) on both sides are also provided with separate beam bodies (81) that are separate from the side beams (8). The position of the separate beam body (81) corresponds to the position of the top cover plate (1) at the upper end of the support box (5), and the separate beam body (81) is welded to the top cover plate (1) as a whole. When the top cover plate (1) is disassembled, the separate beam body (81) is also disassembled. The upper end of the top cover plate (1) is flush with the upper end of the side beam (8) and the upper end of the middle beam (7); The support box (5) is provided with four vertical extended screw seats (2), and the top cover plate (1) is detachably installed on the support box (5) by the extended screw seats (2) and the matching bolts (3); and a rubber waterproof gasket (4) is also provided at the installation position of the bolts (3).

2. The high-speed, modular bridge expansion joint with easily replaceable split segments as described in claim 1, characterized in that: The upper and lower ends of the support beam (6) inside the support box (5) are respectively provided with support elastic elements (10).

3. The high-speed, modular bridge expansion joint with easily replaceable split segments as described in claim 1, characterized in that: A rib plate (9) is also installed between the supporting beam (6) and the intermediate beam (7), and the intermediate beam (7) is fixed to the supporting beam (6) by the rib plate (9).

4. The high-speed, modular bridge expansion joint with easily replaceable split segments as described in claim 1, characterized in that: Shear studs (11) are also installed on the support box (5).

5. A high-speed, modular bridge expansion joint with easily replaceable split segments as described in claim 1, characterized in that: The bridge expansion joint is a segmented structure, with each segment consisting of 7.5m sections.

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