Reliability Analysis of RC Freely Supported Beam Bridge with Intermediate State and Failure-dependence
According to the degradation in strength and deformation of structure with intermediate state, failure-dependence and the theory of reliability vector, an assessment of seismic reliability of bridge engineering structures is brought forward, which assumed there is a three-stage work mode of safety, intermediate and failure. Freely supported beam bridge can be reduced to serial parallel systems of piers and girders. Using base shear of piers and displacement of girders as calculation indexes, models of three-levels of reliability vector are put forward to calculate the reliability vector of piers, girders and bridges respectively. A practical method for dealing with failure-dependence of anti-seismic engineering systems is put forward by considering dependence parameter. The reliability of RC freely supported beam bridge can be effectively predict by the proposed approach. Thus, it can provide theoretical basis for the assessment of durable and seismic performance and offer accurate datum that are needed for the reinforcement of bridge, so as to the potential disaster of lifeline engineering can be prevented or decreased.
Intermediary state Base shear RC freely supported beam bridge Serial system Reliability vector Failure-dependence
Peng Zhang Chuan Jing Hou Ming Li
School of Civil Engineering and Architecture, Southwest Petroleum University,Chengdu, 610500, China
国际会议
上海
英文
1255-1259
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）