地震动荷载作用下大理三塔塔基变形机理研究
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摘要
以大理三塔中的南小塔为例,在收集大理崇圣寺三塔保护区的工程地质资料并对塔基土体进行室内试验的基础上,对南小塔实体进行抽象概化,建立地质力学模型,选用合理的地基土层力学参数,及EICentro波作为地震波输入,利用动力有限元理论对塔基在地震动荷载作用下变形机理进行数值模拟分析。通过计算分析,得出南小塔的倾斜是由不均匀沉降和多次强烈地震引起的等相关结论,为类似古建筑的抗震保护设计提供有益的指导。
Connected with the example of south small pagoda belonged to Dali three pagodas,based on the collecting the engineering geological data of Dali three pagodas and testing the physical and mechanical properties of the stratum,the paper abstracts generalization the entity of south small pagoda,sets up geomechanical model,chooses reasonable physical and mechanical parameters of the stratum and EI-Centro seismic wave for loading the model,studies on deformation of the pagoda foundation under seismic dynamic load with the use of the theory of dynamic finite element. Through the calculation and analysis,some conclusion is that uneven settlement and several strong earthquakes lead south small pagoda to incline,and it will provide favorable guidance with the seismic protection design of the ancient architecture.
Connected with the example of south small pagoda belonged to Dali three pagodas,based on the collecting the engineering geological data of Dali three pagodas and testing the physical and mechanical properties of the stratum,the paper abstracts generalization the entity of south small pagoda,sets up geomechanical model,chooses reasonable physical and mechanical parameters of the stratum and EI-Centro seismic wave for loading the model,studies on deformation of the pagoda foundation under seismic dynamic load with the use of the theory of dynamic finite element. Through the calculation and analysis,some conclusion is that uneven settlement and several strong earthquakes lead south small pagoda to incline,and it will provide favorable guidance with the seismic protection design of the ancient architecture.
引文
[1]魏俊亚.古塔建筑的抗震保护研究[D].西安:西安建筑科技大学,2005.
[2]任重.ANSYS实用分析教程[M].北京:北京大学出版社,2003.
[3]方云,林彤,谭松林.土力学[M].武汉:中国地质大学出版社,2001.
[4]王伟.二维弹塑性土层的波动数值模拟[R].哈尔滨:中国地震局工程力学研究所,2005.
[5]Zheng Zhou,Madara Ogot,Lillian Schwartz.A finite element of the effects an increasing angle on the tower of Pisa[J].Finite Element in Analysis and Design,2001(37):901-1001.
[6]杨荆舟.云南地质与矿产[M].昆明:云南人民出版社,1984.
[2]任重.ANSYS实用分析教程[M].北京:北京大学出版社,2003.
[3]方云,林彤,谭松林.土力学[M].武汉:中国地质大学出版社,2001.
[4]王伟.二维弹塑性土层的波动数值模拟[R].哈尔滨:中国地震局工程力学研究所,2005.
[5]Zheng Zhou,Madara Ogot,Lillian Schwartz.A finite element of the effects an increasing angle on the tower of Pisa[J].Finite Element in Analysis and Design,2001(37):901-1001.
[6]杨荆舟.云南地质与矿产[M].昆明:云南人民出版社,1984.
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