地基土对桥梁索塔抗震设计影响的研究与实践(之二)

Research and Practice of Subsoil Effect on Bridge Tower′s Seismic-Resistance Design (2)

以火箭式激振器为震源对高大结构物 (即云南景洪澜沧江大桥主塔 )进行了现场动力测试和分析 ,利用实测结构体系的动力特性 ,取得了场地土边界元参数 ,在考虑了土与结构相互作用的基础上 ,为选取全桥的抗震设计参数提供合理依据。

Taking the recoil exciter as the epicentre,the local dynamic test and analysis were done for the huge structure (namely Yunnan Jinghong Lantsang Bridge tower).Using the testing dynamic characteristic of structural system,the field soil boundary element parameters is obtained.The interaction of soil and structure is considered for selecting the whole bridge seismic resistant design parameters.