Abstract
In order to improve the efficiency of water transport, avoid energy waste and protect the environment of the ocean and river, the protection of large transport vessels is particularly important. With the continuous development of waterway regulation and the continuous improvement of navigation conditions, the number of ships sailing in the Yinzhouhu section is increasing, and the risk of bridges being hit by ships is also gradually increasing. There are two common ways of bridge anti-collision: independent anti-collision system and its own anti-collision system. The former often adopts the form of independent anti-collision pier, which is generally used in the anti-collision area of old bridges, New bridges generally do not use this method, the latter mainly uses the method of improving the structural firmness of piers to achieve anti-collision, which is the most commonly used and more economical anti-collision method at present. In order to select a more reasonable standard of ship impact force and lay out reasonable anti-collision facilities, the anti-collision facilities of left branch main pier (55, 56) and right branch main pier (76, 77) of ZhongKai Yinzhouhu super-large bridge are studied and designed to provide reference for bridge design.
Highlights
With the development of science and technology, the increasing demand of human life, marine pollution is becoming more and more serious
1) The structure layout is greatly affected by the wave direction and occurrence probability, so the wave environmental conditions should be fully considered in the layout of anti-collision protection structure; 2) The fatigue life of most internal bone materials is much longer than 20 years, but there is obvious stress concentration at the joint of bone materials; It is necessary to increase the elbow plate in this area, which is necessary to be added in the relevant structural specifications of marine structures such as ships
3) The fatigue life of most internal plates is much longer than 20 years due to the boundary constraint effect; The fatigue life at the boundary is less than 20 years, which is mainly due to the finite element analysis method and can be ignored
Summary
With the development of science and technology, the increasing demand of human life, marine pollution is becoming more and more serious. In order to save energy, protect the marine environment from pollution and ensure the safety of human life and property, it is urgent to study the safety protection of large transport vessels. In order to protect the safety of ships and bridges, special research on bridge anticollision and anti-collision and impact safety risk assessment are carried out in complex waters and navigation areas, In order to improve the safety and reliability of the bridge engineering within the scope of reasonable cost and economic and reasonable bridge anticollision design, provide technical support for the ship navigation and the construction of the project itself during and after the bridge construction
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