Abstract:Abstract : Research purposes : The ship - bridge collision happens sometimes,which usually causes the damage of the bridge structure,service life and the security,even some catastrophic consequences like bridge collapse and death.
According to accident investigation and analyses,it has been one of the tough questions in bridge engineering that ship - bridge collision may probably destroy the bridge. The data from America and all over the world shows 10; bridges were
destroyed by ship collision. And it is predicted that the percentage will become bigger in the future. Thus,preventing
bridge from ship collision becomes an international issue,and gets more and more attention from governments,scholars
and engineering. Bridge structures must be capable of resisting ship and barge collision loads, and bridge design
specifications employ equivalent static design loads due to vessel impact as an alternative to conducting fully dynamic
impact analyses. To study dynamic responses of whole bridge installed lead rubber bearing( LRB) to barge impact,the
ANSYS finite element code is presented in this paper. In the finite element model,barge - bridge collision process is
simulated by impact element,and components of bridge,such as beam,pier and pile,are modeled by spatial beam
elements. Therefore, a scientific basis is provided to improve the ability of anti - collision and safety in bridge
engineering design.
Research conclusions :( 1) In this paper,linear viscous damping is considered the energy loss while impacting between
barge and bridge. Results indicate that impact loads calculated by this paper method are about 80; of values which are based on full perfect elasticity collision model. (2) Lead rubber bearing can prevent impact energy transmitting from impacted pier to superstructure of bridge, which reduce the superstructure responses. In this paper, the isolation - rate of example is more than 70;. (3 ) It provides a basis for the ship speed and operation, the design and constructing of ship beam and pier, even for solving some maritime disputes.
张艳军. 通航桥梁对船撞击动力响应研究[J]. 铁道工程学报, 2016, 33(10): 77-82.
ZHANG Yan-jun. Research on the Dynamic Response of Isolated Bridge to Barge Impact. Journal of Railway Engineering Society, 2016, 33(10): 77-82.