爆破地震波作用下框架结构与地基基础协同工作时程分析
|
摘要
爆破地震波荷载不同于构造地震波荷载。本文采用ANSYS有限元分析程序,分别对爆破地震波作用下框架结构在考虑基础固结及考虑地基基础协同工作两种情况进行了空间对比时程分析;并针对协同工作体系,研究了其在爆破地震波和构造地震波作用下的动力特性。分析结果表明:基础固结模型的位移响应较之协同工作模型要小得多,但其内力响应却有所增大,局部还存在突变的情形;此外还得出了两种波作用下结构的动力反应存在较大差异。
Blasting seismic wave loads are different from constructing seismic wave loads.The spatial time-history contrastive analyses are conducted for the frame structure,which considered by coordinated action model and foundation fixed model under the blasting seismic wave by adopting the FEA program ANSYS,respectively.In addition,the dynamic property for the coordinated action system under the blasting seismic wave and constructing seismic wave is investigated,respectively.The results indicate that the displacement response of the foundation fixed model is much smaller than that of the coordinated action model,however,the former internal force response is much larger than the latter,and the local singularity situation is come into being.Furthermore,the seismic responses induced by two kinds of seismic waves are very distinctive.
Blasting seismic wave loads are different from constructing seismic wave loads.The spatial time-history contrastive analyses are conducted for the frame structure,which considered by coordinated action model and foundation fixed model under the blasting seismic wave by adopting the FEA program ANSYS,respectively.In addition,the dynamic property for the coordinated action system under the blasting seismic wave and constructing seismic wave is investigated,respectively.The results indicate that the displacement response of the foundation fixed model is much smaller than that of the coordinated action model,however,the former internal force response is much larger than the latter,and the local singularity situation is come into being.Furthermore,the seismic responses induced by two kinds of seismic waves are very distinctive.
引文
[1]Krauthammer T,Assadi-Lamouki A,Shanaa H M.Analysisof Impulsively Loaded Reinforced Concrete Elements-I Theory[J].Computers and Structures,1993,48(5):851~860
[2]方秦,柳锦春,张亚栋,等.爆炸荷载作用下钢筋混凝土梁破坏形态有限元分析[J].工程力学,2001,2:1~8
[3]娄建武.工程爆破中的建筑物振动监测[J].解放军理工大学学报,2000,1(5):58~62
[4]张齐,林大超,白春华,等.爆炸地震波评价地震损伤效应的实验研究[J].爆炸与冲击,2002,22(1):92~95
[5]瓦尔夫J P著,吴世明译.土-结构动力相互作用[M].北京:地震出版社,1980
[6]魏文晖,卢哲安.爆破地震波作用下框架结构与地基共同工作的非线性动力分析[J].世界地震工程,2004,20(2):95~100
[2]方秦,柳锦春,张亚栋,等.爆炸荷载作用下钢筋混凝土梁破坏形态有限元分析[J].工程力学,2001,2:1~8
[3]娄建武.工程爆破中的建筑物振动监测[J].解放军理工大学学报,2000,1(5):58~62
[4]张齐,林大超,白春华,等.爆炸地震波评价地震损伤效应的实验研究[J].爆炸与冲击,2002,22(1):92~95
[5]瓦尔夫J P著,吴世明译.土-结构动力相互作用[M].北京:地震出版社,1980
[6]魏文晖,卢哲安.爆破地震波作用下框架结构与地基共同工作的非线性动力分析[J].世界地震工程,2004,20(2):95~100
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