Comparative study on nonlinear earthquake response of girder isolated bridges with LRB and model shaking table test
The thesis is aimed to study the characteristics nonlinear seismic response of the isolated continuous girder bridges with LRB. In order to achieve the aim, force-deformation properties of the LRB is considered as bilinear first, the bouc-wen model is adopted to imitate the force nonlinear deformation behavior of LRB, and by using1 Finite element method, the motion equation of the Isolation system of continuous girder bridge is established, then some shaking table tests towards the model of isolated continuous girder bridges with LRB is done.On this basis of it, by. comparing the experimental results and calculation results, such as the acceleration and displacement of deck, vertical force of bearing, and the relationship between the Isolation layer displacement and the Level force displacement of the Bearing, we can see that the difference between the analytical results and the experimental results are very small. The results show that the calculation method can analyze Nonlinear Seismic Response of isolated continuous girder bridges with LRB efficiently. But when the vertical earthquake component is larger,whether the results of the Vertical tension are produced or not, designing the Rubber bearings should be considered.
isolated bridge nonlinear seismic response shaking table test Lead-Rubber-Bearing (LRB) numerical simulation
ZHAN Jiedong LI Xintong LI Yang
Hei Longjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering Northeast Qingdao Technological University Qingdao Shandong 266033,China Hei Longjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering;Northeast
国际会议
三峡
英文
2238-2242
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）