海口市世纪大桥工程场地土层的地震影响评估

Estimate of Earthquake Effect on Soil Layer of Working Site of the Century Bridge,Haikou City

以海口世纪大桥场址危险性分析给出的基岩峰值加速度、基岩加速度反应谱、人工合成地震波及工程场地勘察资料为基础,结合世纪大桥边墩和水中主塔墩孔位的土层剪切波速测试与土动力三轴试验结果,对海口世纪大桥工程场地土层进行了地震反应分析,对土层地震影响效应的评估可作为海口世纪大桥抗震设防的依据。

Based on the rock peak acceleration,rock acceleration response spectrum and artificial earthquake waves,which are determined by earthquake risk analyzing at site of the century bridge of Haikou city,the soil layer responses analysis under seismic load of the bridge′s engineering field is carried on.In the analysis mentioned above,the detail prospecting materials of the working site are used and the soil dynamic parameters,such as shear wave velocity and varying curves of shear modulus to strain and damping ratio to strain,are gained according to the results of on \|the \|spot test and dynamic triaxle test .The estimate of earthquake effect on soil layer of the bridge's engineering field can be used as the basis for the anti\|seismic fortifying of the century bridge.