材料参数对高拱坝动力响应影响研究OACSTPCD

The operating environment of high dam systems is complex and often has a relatively large difference from the design state.Taking Xiluodu Arch Dam as an example,three-dimensional finite element model is firstly used to invert the material parameters of dam body and foundation based on the field measured data,and then the dynamic responses of dam body under the design parameters and inversion parameters are compared.The results show that the selection of material parameters has a significant impact on the dynamic response of dam-foundation system.Compared with the dynamic response of arch dam using the inversion parameters,when the design parameters are used,the dynamic relative displacement of the dam body increases significantly,the opening of transverse joint at the dam abutment increases but the opening of joints in the middle of dam decreases,and the damage at the foundation surface,the orifice and the dam heel increases.It is recommended that the design parameters should be used for seismic safety analysis of arch dams.