Impact Analysis and Damage Assessment and Mitigation of Bridge Piers Subjected to Barge Impact Loads
Bridges across navigable waterways are under the threats of accidental impact loads generated by passing vessels.Vessel collisions are deemed to be an important issue in bridge design as such accidents can result in severe casualties and huge financial losses.Therefore it is of vital importance to prevent and protect bridg es from vessel impact damages.Many experimental and numerical research works have been conducted to quantify barge impact load with respect to barge crush depth.Since the experimental tests are both time con suming and expensive, numerical analyses are widely used to simulate the barge-pier impact.However, in previous numerical studies, bridge piers are modeled by either elastic or rigid materials that ignored the pier plastic deformation and damage, which may greatly affect the barge-pier interaction.Moreover, there is no efficient method to quantitatively assess the bridge conditions after a barge impact accident.It is also impor tant to strengthen the bridge pier to against possible barge impact loads.This paper reports some of our re cent results of the effects of nonlinear pier response and damage, as well as strain rate on barge-pier interac tion; the feasibility of using structural health monitoring techniques to quantitatively assess the bridge condi tions after a vessel impact accident, and the effectiveness of using CFRP to strengthen bridge piers to against vessel impact loads.
Hong Hao Yanyan Sha
School of Civil and Resource Engineering, the University of Western Australia, Perth, Australia
国际会议
哈尔滨
英文
23-39
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）