泉州市规划区场地抗震性能与土地适宜性分区研究  

Study on the site earthquake resistance and feasibility zone in Quanzhou city

作　　者：徐国栋[1] 马东辉[2] 吴共湖 刘文儒 王卫红 

机构地区：[1]北京师范大学资源学院,北京100875 [2]北京工业大学地震工程与结构诊治北京重点试验室,北京100022 [3]福建省泉州市建设局,福建泉州362000

出　　处：《世界地震工程》2007年第4期153-162,共10页World Earthquake Engineering

基　　金：泉州市规划区抗震防灾规划项目资助

摘　　要：在泉州市土地适宜性分区规划的编制过程中,建立了比较详细的钻孔资料数据库,给出了泉州规划区内不同土类的剪切波速按埋置深度进行修正的经验公式,并用这些经验公式计算了无实测波速资料的钻孔的等效剪切波速。文中按等效剪切波速和覆盖层厚度进行了场地类别的划分;采用震后残余应变和软化模量的思想和分层总和方法,综合考虑了软土厚度、埋深、地下水位对软土震陷量的影响,使软土震陷量计算结果更为合理。在充分考虑规划区内地形地貌、工程地质条件、场地类别、砂土液化、软土震陷、砂层及软弱土层的厚度分布、滑坡崩塌等对场地抗震性能影响的基础上,给出了更适合规划区的场地抗震性能评价标准,绘制了泉州场地抗震性能与土地适宜性分区图。In the course of developing the site earthquake resistance and utilization zoning plan in Quanzhou city, an integrated database of bore-hole records is established. A experiential statistical formula of shear-wave velocity of different soils is obtained by the statistical analysis, which is modified by the embedded depth of soil layer. The equivalent shear-wave velocity of drillings without shear-wave velocity data is calculated by the experiential formula, then according to the equivalent shear-wave velocity and the thickness of overlying soil, the site classifications are determined on which the bore-hole lies. The fluence of the thickness and the depth of soft soil and the ground water level on earthquake-induced settlement of the soft soil is considered synthetically by the layer-wise summation method and the idea of softened module and residual strain of soil. On the basis of analyzing thoroughly the effect of the topography and relief, the seismic engineering geology, the site classes, the liquefaction of sand, the earthquake-induced settlement of the soft soil after earthquake, the depth and thickness of the sand and the soft soil, the slope and landslip, and so on, a more feasible evaluation criterion of the site earthquake resistance in the zoning area is put forward. According to the criterion, the site utilization zoning plan is developed.

关 键 词：抗震防灾 剪切波速 软化模量 软土 震陷 场地抗震性能 

分 类 号：P315[天文地球—地震学]