分离式减隔震技术在系杆梁拱组合体系拱桥中抗震效果研究-防灾减灾工程及防护工程专业论文.docxVIP

西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 西安建筑科技大学硕士学位论文 万方数据 万方数据 万方数据 万方数据 Investigation on the seismitic effect of the separate shaking and shock attenuation technology Specialty: Disaster Prevention and Reduction Engineering, Protective Engineering Name: YanYang Instructor: Prof. GaoDafeng Abstract In the transportation system the bridge structure is an indispensable partner. In the earthquake, the bridge structure is especially prone to damage, what’s more it also takes a long time to be repaired, so to ensure the normal using of bridge structure is the key of the rescue. In recent years, a lot of bowstring arch bridges were built, because of its elegant and economic. However, in order to having the good seismic performance, seismic design of bowstring arch bridge is an important measure. The separate shaking and shock attenuation technology as a new method of seismic isolation technology, it is necessary to study the seismic effect of the method. When the separate shaking and shock attenuation technology is used in the bowstring arch bridge, it is necessary to study the effect of the separate shaking and shock attenuation technology. seismic isolation. And in general, the separate shaking and shock attenuation technology is applied to the bridge structure. Based on analyzing the domestic and foreign literature, With xian dongfeng Bahe bridge as the engineering example, through the finite element analysis software, seting up three conditions: the common seismic, seismic isolation and the separate shaking and shock attenuation technology. With analysing on three kinds of model, the effect of the separate shaking and shock attenuation technology was got by comparing the three kinds of results. The primary contents are as follows: The three models of bahe bridge were established by the finite element software midas/civil, by the analysis the vibration modes was obtained. In this paper the first five vibration modes were studied and provided some basis for th