加层减震砌体结构动力时程分析
|
摘要
对于砌体结构提出具体的加层减震措施.由于在该程序中无现成的单元来模拟隔震层,根据程序特点和研究问题的本质,用组合单元和约束条件来模拟隔震层.隔震层采用双线性库仑摩擦阻尼恢复力模型和粘滞阻尼恢复力模型.用程序针对一栋4层砌体结构直接加层进行了动力时程分析.得出在地震作用下该房屋直接加层各层的最大位移和加速度.得出各层的位移和加速度动力时程曲线.对该房屋加层减震进行了动力时程分析.得出在地震作用下加层减震结构各层的最大位移和加速度.得出加层减震结构各层的位移和加速度动力时程曲线.最后,对计算结果进行了分析,得出一些有意义的结果和结论.
Concrete measures for the masonry structure with added storey and seismic response decrease were put forward.Because no ready-made element can be used to simulate the isolation storey in the program,so according to the characteristics of the program and the essence of the analysis,combined elements and restrained factor were used to simulate the isolation storey.The bi-linear Coulomb damping hysteresis model and the viscous damping hysteresis model were used for the isolation storey.The dynamic time history was analyzed by the program on a four-storey masonry structure with direct storey-increasing.The maximum displacement and acceleration of every storey in the structure with direct storey-increasing under earthquake were given.And the time history curve of the displacement and acceleration of every storey in the structure were also obtained.The dynamic time history was analyzed on the masonry structure with added storey and seismic response decrease.Getting the maximum displacement and acceleration of every storey in the structure with added storey and seismic response decrease under earthquake.Getting the time history curve of the displacement and acceleration of every storey in the structure.At last,the calculation result was analyzed.Some useful results and conclusions were given.
Concrete measures for the masonry structure with added storey and seismic response decrease were put forward.Because no ready-made element can be used to simulate the isolation storey in the program,so according to the characteristics of the program and the essence of the analysis,combined elements and restrained factor were used to simulate the isolation storey.The bi-linear Coulomb damping hysteresis model and the viscous damping hysteresis model were used for the isolation storey.The dynamic time history was analyzed by the program on a four-storey masonry structure with direct storey-increasing.The maximum displacement and acceleration of every storey in the structure with direct storey-increasing under earthquake were given.And the time history curve of the displacement and acceleration of every storey in the structure were also obtained.The dynamic time history was analyzed on the masonry structure with added storey and seismic response decrease.Getting the maximum displacement and acceleration of every storey in the structure with added storey and seismic response decrease under earthquake.Getting the time history curve of the displacement and acceleration of every storey in the structure.At last,the calculation result was analyzed.Some useful results and conclusions were given.
引文
[1]矢岛秋彦,中田宜男.中间阶免震の施工とその注意点[J].施工,1998,390:72-77.
[2]徐忠根,周福霖.底部二层框架上部多塔楼底隔震数值模拟与试验研究[J].地震工程与工程振动,2005(1):126-132.
[3]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004(12):114-120.
[4]赵昕,李杰.层间隔震结构隔震垫的有限元模拟[J].建筑结构,2001(11):66-68.
[5]朱玉华,吕西林.组合基础隔震系统地震反应分析[J].土木工程学报,2004(4):76-81.
[2]徐忠根,周福霖.底部二层框架上部多塔楼底隔震数值模拟与试验研究[J].地震工程与工程振动,2005(1):126-132.
[3]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004(12):114-120.
[4]赵昕,李杰.层间隔震结构隔震垫的有限元模拟[J].建筑结构,2001(11):66-68.
[5]朱玉华,吕西林.组合基础隔震系统地震反应分析[J].土木工程学报,2004(4):76-81.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心