Pier collision avoidance structural body and design method thereof

Abstract

The invention discloses a pier collision avoidance structural body and a design method thereof. In order to overcome the defects of the existing pier collision avoidance device, such as high falling damage possibility, noneconomic processing cost, inconvenience in installation and maintenance and the like, the invention first provides the pier collision avoidance structural body. The pier collision avoidance structural body designed by the method belongs to the design of an eccentric structure and comprises an inner pipe and an outer pipe which are connected together with one sleeved inside the other, the inner pipe is eccentrically sleeved with the outer pipe, and the inner pipe and the outer pipe are parallel in the axial direction; a damping material layer is filled between the inner pipe and the outer pipe, and the thickness of the damping material layer is maximum delta in the multiple vehicle collision direction; the inner pipe is connected with a pier through the grouting of a fine aggregate concrete layer; the inner pipe and the outer pipe are optimally connected by an imbrex structure; the outer pipe is round or elliptical. The invention further provides the design method for the eccentric round or eccentric elliptical structural body. The product has the advantages of simple structure, high safety, excellent protection effect, material saving and cost reduction. The principles of the design method are reliable, scientific and simple.

Description

technical field [0001] The invention relates to a safety protection structure, in particular to a bridge pier anti-collision structure and a design method thereof, and belongs to the field of safety devices for decelerating, reversing or stopping driving vehicles. Background technique [0002] Overpasses, as a way of road and bridge with high traffic efficiency, are increasingly used to reduce traffic congestion, especially in urban traffic congestion. With the construction and use of a large number of overpasses, the safety problems of bridges have become increasingly prominent. In accident-prone areas, the impact of accident vehicles on bridge piers directly affects the operation safety and service life of bridges. At present, the protection of bridge piers in the road and bridge system mainly includes two technical solutions: strengthening the bridge piers and adding additional protective structures. Add specialized anti-collision protection structural parts outside the...

AI Technical Summary

Problems solved by technology

The pier anti-collision device with this structure has three technical defects: one is that the centers of the inner and outer protection circles overlap, and anti-collision structures are also installed on some parts where no vehicle collision will occur, resulting in waste of materials and uneconomical; The ring and the bridge pier are directly connected by connecting parts, so that it is impossible to fully fit the inner protection ring and the outer surface of the bridge pier, resulting in the ineffective and uniform transmission of the impact force of the vehicle, which eventually causes the anti-collision device to fall off easily and the connecting parts of the bridge pier to be easily damaged; the third is to prevent If the building device needs to be replaced after installation, it needs to be replaced as a whole, and the maintenance cost is high

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