VEHICLE COLLISION PREVENTION DEVICE FOR BRIDGE PIER

Abstract

Provided is a vehicle collision prevention device for a bridge pier, which includes a bionic honeycomb column thin-walled structure arranged on the bridge pier and an anti-collision structure arranged on the bionic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a restraint plate arranged in a circumferential direction of the panel and forming a closed loop, shear nails arranged in an interior of the panel and rib plates arranged on inner walls of the restraint plate and extending into the interior of the panel. In the present disclosure, the panel includes the rib plates and the shear nails, so that an interface bonding force between the ultra-high performance concrete panel and the restraint plate is enhanced, which makes them closely bonded together. The ultra-high performance concrete anti-collision structure and the bionic honeycomb column thin-walled structure are combined together to form a combined structure composed by them.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims the benefit and priority of Chinese Patent Application No. 202411277086.2 filed with the China National Intellectual Property Administration on Sep. 12, 2024, the disclosure of which is incorporated by reference herein in its entirety as part of the present application.

TECHNICAL FIELD

The present disclosure relates to the technical field of bridge pier protection devices, and in particular to a vehicle collision prevention device for a bridge pier.

BACKGROUND

Although China has made significant progress in vehicle collision prevention of bridge piers in recent ten years, and many anti-collision structures of the bridge piers have been widely used in engineering, some obvious problems still exist. 1) Conventional rubber materials, relying on their elastic deformation, are limited in energy absorption, and are thus generally only suitable for side collision protection of pier bodies with low impact energy and relatively small impact angles. 2) A single composite material used for structural protection is prone to fracture in a collision due to its brittleness, causing serious local damage to the structure and resulting in a low overall energy absorption capacity. The mechanical properties of the composite material determine that the material is only suitable for supporting the structure. 3) A simple metal sandwich structure can be used for avoiding collision and absorbing energy but is insufficient in overall structural strength, and a metal material is prone to premature destruction and instability, and is also prone to corrosion when exposed outside. In view of the current increasingly serious problem of bridges being collided by vehicle and insufficient research on vehicle collision protection devices for the bridges, there is an urgent need to research and design some novel anti-collision structures with excellent performance to replace traditional vehicle collision protection facilities, so as to protect bridge structures, and the novel anti-collision structures are preferably reusable to reduce the maintenance cost.

In order to solve the above-mentioned problems, the present disclosure provides a vehicle collision prevention device for a bridge pier to solve the problems that an existing anti-collision structure is low in protection efficiency, prone to local damage and poor in reusability.

SUMMARY

An objective of the present disclosure is to provide a vehicle collision prevention device for a bridge pier, so as to achieve the purpose of improving the protection efficiency of the vehicle collision prevention device for the bridge pier.

To achieve the above objective, the present disclosure provides the following solutions.

A vehicle collision prevention device for a bridge pier includes a bionic honeycomb column thin-walled structure arranged on the bridge pier and an anti-collision structure arranged on the bionic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a restraint plate arranged in a circumferential direction of the panel and forming a closed loop, shear nails arranged in an interior of the panel and rib plates arranged on inner walls of the restraint plate and extending into the interior of the panel.

In an embodiment, the shear nails are perpendicular to a plane where the panel is located, and the rib plates are perpendicular to the restraint plate.

In an embodiment, the restraint plate is rectangular.

In an embodiment, the rib plates are T-shaped.

In an embodiment, at least three rib plates are arranged at equal intervals on each inner wall of vertical plates of the restraint plate.

In an embodiment, the shear nails are arranged at intersections of connecting lines of the rib plates located on opposite faces of the restraint plate.

In an embodiment, the panel is made of ultra-high performance concrete.

In an embodiment, the bionic honeycomb column thin-walled structure includes a thin wall and bionic honeycomb columns arranged inside a cavity enclosed by the thin wall.

In an embodiment, dimensions of the panel are the same as sectional dimensions of a cavity enclosed by a thin wall.

Compared with the prior art, the present disclosure has the following technical effects.

According to the present disclosure, the panel includes the rib plates and the shear nails, so that an interface bonding force between the ultra-high performance concrete panel and the restraint plate is enhanced, the ultra-high performance concrete panel and the restraint plate are closely bonded together, and the ultra-high performance concrete anti-collision structure and the bionic honeycomb column thin-walled structure are combined together to form a combined structure composed by ultra-high performance concrete and bionic honeycomb column thin-wall, which can effectively absorb kinetic energy of vehicle to resist vehicle collision, reduce the degree of damage to the bridge pier, and guarantee the normal service performance of the bridge, thus creatively solving the problems that an existing anti-collision structure is low in protection efficiency, prone to local damage and poor in reusability.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the technical solutions in the present disclosure or in the prior art more clearly, the following will make a brief introduction to the drawings required in the embodiments. Apparently, the drawings in the following description merely illustrates some of the embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an interior of a panel according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a bionic honeycomb column thin-walled structure according to an embodiment of the present disclosure; and

FIG. 3 is a schematic structural diagram of a vehicle collision prevention device for a bridge pier according to an embodiment of the present disclosure.

Reference numerals in drawings: 1—Restraint plate; 2—Rib plate; 3—Shear nail; 4—Thin wall; 5—Bionic honeycomb column; 6—Panel; and 7—Bionic honeycomb column thin-walled structure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Technical solutions in embodiments of the present disclosure are clearly and completely described below in combination with drawings in the embodiments of the present disclosure. Apparently, the embodiments described are merely some rather than all of the embodiments of the present disclosure. On the basis of the embodiments of the present disclosure, all other embodiments that can be obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present disclosure.

An objective of the present disclosure is to provide a vehicle collision prevention device for a bridge pier, so as to achieve the purpose of improving the protection efficiency of the vehicle collision prevention device for the bridge pier.

To make the above objective, features and advantages of the present disclosure clearer and more comprehensible, the present disclosure is further described in detail below with reference to the drawings and specific implementations.

Referring to FIGS. 1 to 3, a vehicle collision prevention device for a bridge pier includes a bionic honeycomb column thin-walled structure arranged on the bridge pier and an anti-collision structure arranged on the bionic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a restraint plate arranged in a circumferential direction of the panel and forming a closed loop, shear nails arranged inside the panel and rib plates arranged on inner walls of the restraint plate and extending into the panel. According to the present disclosure, the panel includes the rib plates and the shear nails, so that an interface bonding force between an ultra-high performance concrete panel and the restraint plate is enhanced, the ultra-high performance concrete panel and the restraint plate are closely bonded together, and the ultra-high performance concrete anti-collision structure and the bionic honeycomb column thin-walled structure are combined together to form a combined structure composed by the ultra-high performance concrete and the bionic honeycomb column thin-wall, which can effectively absorb kinetic energy of vehicle to resist vehicle collision, reduce the degree of damage to the bridge pier, and guarantee the normal service performance of the bridge, thus creatively solving the problems that an existing anti-collision structure is low in protection efficiency, prone to local damage and poor in reusability.

The bionic honeycomb column thin-walled structure has an excellent energy absorption efficiency and is used as an inner layer for high energy absorption. In addition, the ultra-high performance concrete is used as the panel in a low-energy-absorption scenario to protect a honeycomb sandwich structure of the inner layer.

The anti-collision structure includes two parts, namely the ultra-high performance concrete panel and the restraint plate. The ultra-high performance concrete panel, mainly by virtue of its excellent strength and impact resistance, plays the roles of protecting the sandwich structure of the inner layer and transmitting and diffusing a local impact force on the panel, so that the impact force can be dispersed relatively uniformly onto the entire structure to allow more members to participate in energy dissipation. Steel fibers in the ultra-high performance concrete also have considerable energy dissipation capacity when subjected to plastic deformation. In one aspect, the restraint plate can limit deformation of the ultra-high performance concrete within a certain range, so that the ultra-high performance concrete is subjected to multi-directional pressure. In another aspect, a restraint device itself is made of a material with a certain energy-dissipating capacity, and plastic deformation of the restraint device occurring in impact may also consume a certain amount of energy. In addition, the rib plates and the shear nails installed on the restraint device allow the ultra-high performance concrete panel to be closely bonded to the restraint device.

The bionic honeycomb column thin-walled structure, as a main energy-dissipating member of an anti-collision device, relies on its own plastic deformation to make an accumulative energy consumption, and thus has the advantage of high energy absorption efficiency.

Referring to FIG. 1, the shear nails are all perpendicular to a plane where the panel is located, and the rib plates are perpendicular to the restraint plate.

Referring to FIG. 1, the restraint plate is rectangular.

Referring to FIG. 1, the rib plates are T-shaped.

Referring to FIG. 1, at least three rib plates are arranged at equal intervals on each inner wall of vertical plates of the restraint plate.

Referring to FIG. 1, the shear nails are arranged at intersections of connecting lines of the rib plates located on opposite faces of the restraint plate.

In a further embodiment, the panel is made of ultra-high performance concrete.

Referring to FIG. 2, the bionic honeycomb column thin-walled structure includes a thin wall and bionic honeycomb columns arranged inside a cavity enclosed by the thin wall.

In a further embodiment, dimensions of the panel are the same as sectional dimensions of the cavity enclosed by the thin wall, to ensure a fitting connection between the panel and the bionic honeycomb column thin-walled structure.

Adaptive changes made according to actual needs are all within the scope of protection of the present disclosure.

It should be noted that it is obvious to those skilled in the art that the present disclosure is not limited to the details of the above exemplary embodiments, and that the present disclosure can be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Accordingly, in all points of view, the embodiments should be regarded as exemplary and be non-restrictive, the scope of the present disclosure is defined by the appended claims rather than the foregoing description, and it is therefore intended that all changes falling within the meaning and scope of equivalent elements of the claims should be included in the present disclosure. Any reference numeral in the claims should not be considered as limiting the involved claims.

Claims

1. A vehicle collision prevention device for a bridge pier, comprising a bionic honeycomb column thin-walled structure arranged on the bridge pier and an anti-collision structure arranged on the bionic honeycomb column thin-walled structure, wherein the anti-collision structure comprises a panel, a restraint plate arranged in a circumferential direction of the panel and forming a closed loop, shear nails arranged in an interior of the panel and rib plates arranged on inner walls of the restraint plate and extending into the interior of the panel.

2. The vehicle collision prevention device for a bridge pier according to claim 1, wherein the shear nails are perpendicular to a plane where the panel is located, and the rib plates are perpendicular to the restraint plate.

3. The vehicle collision prevention device for a bridge pier according to claim 2, wherein the restraint plate is rectangular.

4. The vehicle collision prevention device for a bridge pier according to claim 3, wherein the rib plates are T-shaped.

5. The vehicle collision prevention device for a bridge pier according to claim 4, wherein at least three rib plates are arranged at equal intervals on each inner wall of vertical plates of the restraint plate.

6. The vehicle collision prevention device for a bridge pier according to claim 5, wherein the shear nails are arranged at intersections of connecting lines of the rib plates located on opposite faces of the restraint plate.

7. The vehicle collision prevention device for a bridge pier according to claim 2, wherein the panel is made of ultra-high performance concrete.

8. The vehicle collision prevention device for a bridge pier according to claim 1, wherein the bionic honeycomb column thin-walled structure comprises a thin wall and bionic honeycomb columns arranged inside a cavity enclosed by the thin wall.

9. The vehicle collision prevention device for a bridge pier according to claim 1, wherein dimensions of the panel are the same as sectional dimensions of a cavity enclosed by a thin wall.