The Evaluation Of Overall Safety Of Span Continuous Beam Five Piled Overhead Port Structure

Sea Terminal With Huge Water Fluctuation most nearly 10 years of use in Inland River,and in the construction of the wharf uses a lot of new materials, new structure type, and load environment becomes more and more complex.This making it work traits compared with the traditional structure have great changes, but there is no unified analysis and evaluation system. Under this premise,this essay combining the research project named “The Application of Key Technology About Sea Terminal With Huge Water Fluctuation in Chongqing” was based on first-stage construction of container pier in Cun Tan, Chongqing, studied the most unfavorable loading conditions and the failure mode under horizontal load about span continuous beam five piled overhead port. The study will provide the references for the professionals to evaluate the global safety performances about the same structure port in reservoir area. It contained some main jobs as followed.First,the essay combining the research project calculated the plane frame about span continuous beam five piled overhead port in different loading conditions. It also analyzed the results and proposed the association of most unfavorable loading conditions about each main member in the same port structure under two kinds of ultimate states. The analysis will offer the references for the designers to design the similar overhead port.Second,the essay did the finite element static analysis on the structure in the association of most unfavorable loading conditions. According to the results, we knew the stress conditions of the whole structure and the mechanical property of each main member. This provided basis for the collocation of transverse bent and the size of cross section.Third,the essay using the finite element software confirmed the order and developing process of plastic hinge according to the pushover analysis about t he plane frame of port structure in seven kinds of horizontal conditions. It also knew the transmission path of structure capacity and the evolution of mechanism. The essay found the failure mode of port structure in seven kinds of level impinges. This proposed the references for the optimization design and security assessment.At last,the essay according to the results of pushover analysis and the control index of the displacement about security level analyzed the elastic and plastic stages of port structure in seven kinds of level impinges. It got the impact loads of the port structure under different security levels. The essay proposed the references for the further study on securities of the port structure.