Pier vehicle impact prevention device

Abstract

This invention discloses a bridge pier anti-vehicle collision device, comprising a biomimetic honeycomb column thin-walled structure installed on the bridge pier and an anti-collision structure installed on the biomimetic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a constraint plate arranged in a closed loop around the panel, shear studs arranged inside the panel, and ribs arranged on the inner wall of the constraint plate and extending into the panel. The panel of this invention contains ribs and shear studs to enhance the interfacial bonding force between the ultra-high performance concrete panel and the constraint plate, making them tightly bonded together. The ultra-high performance concrete anti-collision structure and the biomimetic honeycomb column thin-walled structure are combined to form an ultra-high performance concrete-biomimetic honeycomb column thin-walled composite structure, which can efficiently absorb vehicle kinetic energy to resist vehicle impact, reduce the degree of damage to the bridge pier, and ensure the normal use performance of the bridge. It creatively solves the problems of low protection efficiency, easy local damage, and poor reusability of existing anti-collision structures.

Description

Technical Field

[0001] This invention relates to the field of bridge pier protection devices, and in particular to a bridge pier anti-vehicle collision device. Background Technology

[0002] Although my country has made significant progress in bridge pier collision protection over the past decade, with many anti-collision structures widely used in engineering projects, some significant problems remain: 1) Conventional rubber materials have limited energy absorption due to their elastic deformation, generally only suitable for side impact protection of piers with relatively small impact energy and angles. 2) Single composite materials used for structural protection are prone to fracture during collisions due to their brittleness, resulting in severe localized damage and low overall energy absorption capacity. The mechanical properties of composite materials limit their applicability to supporting structures. 3) Simple metal sandwich structures can avoid collisions and absorb energy, but their overall structural strength is insufficient, and the metal materials are prone to premature failure and instability, and are susceptible to corrosion when exposed to the elements. Considering the increasingly serious problem of bridge vehicle collisions and the insufficient research on bridge vehicle collision protection devices, there is an urgent need to research and design new, high-performance anti-collision structures to replace traditional vehicle collision protection facilities, protect bridge structures, and ideally, be reusable to reduce maintenance costs.

[0003] To address the aforementioned problems, this invention provides a bridge pier anti-vehicle collision device to solve the issues of low protection efficiency, susceptibility to localized damage, and poor reusability of existing anti-collision structures. Summary of the Invention

[0004] The purpose of this invention is to provide a bridge pier anti-vehicle collision device to improve the protection efficiency of the bridge pier anti-vehicle collision device.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A bridge pier anti-vehicle collision device includes a biomimetic honeycomb column thin-walled structure disposed on the bridge pier and an anti-collision structure disposed on the biomimetic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a constraint plate disposed on the circumference of the panel and forming a closed loop, a shear stud disposed inside the panel, and a rib plate disposed on the inner wall of the constraint plate and extending into the interior of the panel.

[0007] Preferably, the shear studs are all perpendicular to the plane of the panel, and the ribs are perpendicular to the constraint plate.

[0008] Preferably, the constraint plate is rectangular.

[0009] Preferably, the rib is T-shaped.

[0010] Preferably, at least three ribs are provided at equal intervals on each inner wall of the vertical plate.

[0011] Preferably, the shear stud is disposed at the intersection of the lines connecting the ribs located on opposite surfaces.

[0012] Preferably, the panels are made of ultra-high performance concrete.

[0013] Preferably, the biomimetic honeycomb column thin-walled structure includes a thin wall and biomimetic honeycomb columns disposed within the cavity enclosed by the thin wall.

[0014] Preferably, the dimensions of the panel are the same as the cross-sectional dimensions of the cavity enclosed by the thin wall.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] 1. The panel of this invention contains ribs and shear studs to enhance the interfacial bonding force between the ultra-high performance concrete panel and the restraint plate, making them tightly bonded together. It combines the ultra-high performance concrete anti-collision structure and the biomimetic honeycomb column thin-walled structure to form an ultra-high performance concrete-biomimetic honeycomb column thin-walled composite structure, which can efficiently absorb vehicle kinetic energy to resist vehicle impact, reduce the degree of damage to bridge piers, and ensure the normal use performance of bridges. It creatively solves the problems of low protection efficiency, easy local damage, and poor reusability of existing anti-collision structures. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal structure of the panel of the present invention;

[0019] Figure 2 This is a schematic diagram of the biomimetic honeycomb column thin-walled structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the bridge pier anti-vehicle collision device of the present invention;

[0021] Among them, 1. constraint plate; 2. rib plate; 3. shear stud; 4. thin wall; 5. biomimetic honeycomb column; 6. panel; 7. biomimetic honeycomb column thin wall structure. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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] The purpose of this invention is to provide a bridge pier anti-vehicle collision device to improve the protection efficiency of the bridge pier anti-vehicle collision device.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] refer to Figures 1 to 3 A bridge pier anti-vehicle collision device includes a biomimetic honeycomb column thin-walled structure installed on the bridge pier and an anti-collision structure installed on the biomimetic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a constraint plate arranged in a closed loop around the panel, shear studs arranged inside the panel, and ribs arranged on the inner wall of the constraint plate and extending into the panel. The panel of the present invention contains ribs and shear studs to enhance the interfacial bonding force between the ultra-high performance concrete panel and the constraint plate, so that they are tightly bonded together. The ultra-high performance concrete anti-collision structure and the biomimetic honeycomb column thin-walled structure are combined to form an ultra-high performance concrete-biomimetic honeycomb column thin-walled composite structure, which can efficiently absorb vehicle kinetic energy to resist vehicle impact, reduce the degree of damage to the bridge pier, ensure the normal use performance of the bridge, and creatively solve the problems of low protection efficiency, easy local damage, and poor reusability of existing anti-collision structures.

[0026] Bionic honeycomb column thin-walled structures have excellent energy absorption efficiency and are used as inner layers that bear high energy absorption; in addition, ultra-high performance concrete is used as the panel in low energy absorption scenarios to protect the inner honeycomb sandwich structure.

[0027] The impact-resistant structure consists of two parts: an ultra-high performance concrete (UHVPC) panel and a restraint plate. The UHVPC panel, primarily due to its superior strength and impact resistance, protects the inner sandwich structure and transmits and diffuses localized impact forces on the panel, distributing the impact force relatively evenly throughout the structure and allowing more components to participate in energy dissipation. The steel fibers in the UHVPC also possess considerable energy dissipation capacity during plastic deformation. The restraint plate, on the one hand, restricts the deformation of the UHVPC within a certain range, placing it under multi-directional compression. On the other hand, the restraint device itself is made of a material with energy-dissipating capabilities, and the plastic deformation during impact also dissipates some energy. Furthermore, the ribs and shear studs installed on the restraint device ensure a tight bond between the UHVPC panel and the restraint device.

[0028] The biomimetic honeycomb column thin-walled structure, as the main energy-dissipating component of the anti-collision device, relies on its own plastic deformation to accumulate energy dissipation, and has the advantage of high energy absorption efficiency.

[0029] refer to Figure 1 The shear studs are all perpendicular to the plane of the panel, and the ribs are perpendicular to the constraint plate.

[0030] refer to Figure 1 The constraint plate is rectangular.

[0031] refer to Figure 1 The ribs are T-shaped.

[0032] refer to Figure 1 At least three ribs are provided at equal intervals on each inner wall of the vertical plate.

[0033] refer to Figure 1 The shear studs are positioned at the intersection of the lines connecting the ribs on opposite surfaces.

[0034] Furthermore, the panels are all made of ultra-high performance concrete.

[0035] refer to Figure 2 The biomimetic honeycomb column thin-walled structure includes a thin wall and biomimetic honeycomb columns disposed within a cavity enclosed by the thin wall.

[0036] Furthermore, the panel's dimensions are the same as the cross-sectional dimensions of the cavity enclosed by the thin wall, ensuring a close fit between the panel and the biomimetic honeycomb column thin-walled structure.

[0037] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0038] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bridge pier anti-vehicle collision device, characterized in that, It includes a biomimetic honeycomb column thin-walled structure installed on the bridge pier and an anti-collision structure installed on the biomimetic honeycomb column thin-walled structure. The anti-collision structure includes a panel, a constraint plate installed on the circumference of the panel and forming a closed loop, a shear stud installed inside the panel, and a rib plate installed on the inner wall of the constraint plate and extending into the interior of the panel. The shear studs are all perpendicular to the plane of the panel, and the ribs are perpendicular to the constraint plates. The panels are all made of ultra-high performance concrete; The biomimetic honeycomb column thin-walled structure includes a thin wall and biomimetic honeycomb columns disposed within the cavity enclosed by the thin wall. The biomimetic honeycomb pillars extend in a direction away from the panel, and a plurality of the biomimetic honeycomb pillars are arranged in a direction parallel to the panel; The panel contains the ribs and shear studs to enhance the interfacial adhesion between the ultra-high performance concrete panel and the constraint plate, combining the ultra-high performance concrete anti-collision structure and the biomimetic honeycomb column thin-walled structure to form an ultra-high performance concrete-biomimetic honeycomb column thin-walled composite structure.

2. The bridge pier anti-vehicle collision device according to claim 1, characterized in that, The constraint plate is rectangular.

3. The bridge pier anti-vehicle collision device according to claim 2, characterized in that, The rib is T-shaped.

4. A bridge pier anti-vehicle collision device according to claim 3, characterized in that, At least three ribs are provided at equal intervals on each inner wall of the constraint plate.

5. A bridge pier anti-vehicle collision device according to claim 4, characterized in that, The shear studs are positioned at the intersection of the lines connecting the ribs on opposite surfaces.

6. A bridge pier anti-vehicle collision device according to claim 1, characterized in that, The dimensions of the panel are the same as the cross-sectional dimensions of the cavity enclosed by the thin wall.

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