A flexible honeycomb structure anti-collision device

Abstract

The invention belongs to the field of safety protective devices in bridge engineering building, in particular to a flexible honeycomb structure anti-collision device. The flexible honeycomb structure anti-collision device comprises an inner layer anti-collision ring and an outer layer anti-collision ring which sequentially coat the periphery of a bridge pier. A master structure of the inner layer anti-collision ring comprises two flexible plates which are coaxially arranged in a sleeved mode and a honeycomb structure sandwiched between the two flexible plates, and the honeycomb structure is made from a flexible material and is formed by tightly arranging a plurality of polygonal hole bodies; and the outer layer anti-collision ring is wrapped with a layer of rigid material, and the inner layer anti-collision ring and the outer layer anti-collision ring are fixed at an interface in a connected mode through a connecting unit. The anti-collision device has good stiffness and flexibility, generates a large deformation effect and an excellent energy-absorbing effect during collision, meanwhile protects the bridge pier and a vehicle, can automatically adapt the bridge piers of different types, is rapid in installation and convenient to install, greatly reduces time and economic cost and is particularly suitable for anti-collision design of the bridge piers of different types.

Description

technical field [0001] The invention belongs to the field of safety protection equipment in bridge engineering construction, and more specifically relates to a flexible honeycomb structure anti-collision device, which can simultaneously protect bridge piers and vehicles, and can actively adapt to bridge piers of various shapes and sizes. Background technique [0002] With the vigorous development of my country's transportation industry, there are more and more bridges such as flyover bridges. While alleviating traffic pressure, it also brings many hidden dangers of traffic accidents. For example, it is not uncommon for high-speed cars to collide with bridge piers. . Therefore, it is very meaningful and necessary to study the vehicle collision prevention device for bridge piers. [0003] At present, most of the domestic mainstream anti-collision devices are elastic deformation anti-collision facilities and crushing deformation anti-collision facilities. The basic principle i...

AI Technical Summary

Problems solved by technology

However, most of the main body of the existing device is made of steel, and the deformation during collision is often too small or insufficient, the energy absorption effect is not ideal, and because the overall rigidity is too large, the protection effect on the vehicle is limited

Moreover, the design and installation of the existing anti-collision devices need to be carried out according to multiple factors such as the position of the pier itself, the shape, the traffic flow, and the surrounding environmental conditions.

Therefore, the bridge anti-collision devices at this stage must be customized according to the specific conditions of the corresponding bridge, and most of the devices are directly welded on the base, which brings a series of disadvantages such as high cost, high maintenance cost, and high maintenance cost. Since design and production often take a lot of time, it also increases a lot of time costs invisibly.

The cost of common bridge anti-collision devices is in the millions or even tens of millions. However, such a high-cost device will receive irreversible damage after an impact, which has caused great economic losses. loss of value

[0004] All in all, in the existing technology, the main bodies of most of the anti-collision devices are composed of structures such as steel boxes with high rigidity. Although this ensures the rigidity of the anti-collision devices, there are still the following defects and deficiencies: (1) The structural deformation of the traditional anti-collision device is small during the collision, and the energy absorption effect is average, so that the traditional anti-collision device can meet the requirements for the protection effect of the pier, but the protection ability for the vehicle is insufficient. (2) The anti-collision device with the traditional structure It needs to be designed and manufactured in advance according to the various parameters of the pier, which takes a long time and has high economic costs. (3) The traditional structure generally has disadvantages such as inconvenient installation due to its shape characteristics and its own material properties

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