基于高差差异较大的山地建筑场地类别判别方法  

Site Classification Method at a Building Site Near Mountain with Significant Elevation Difference

作　　者：徐有娜 王文哲 XU Youna;WANG Wenzhe(Construction Comprehensive Survey,Research and Design Institute Co.,Ltd.,,Bejing 100007,China;Longyuan(Beijing)Wind Power Engineering Design Consulting Co.,Ltd.,Bejing 100032,China)

机构地区：[1]建设综合勘察研究设计院有限公司,北京100007 [2]龙源(北京)风电工程设计咨询有限公司,北京100032

出　　处：《土工基础》2022年第3期387-390,共4页Soil Engineering and Foundation

基　　金：国家自然科学基金项目(41572269);2021年度东城区优秀人才培养资助项目(2021-dchrcpyzz-48)。

摘　　要：平原地区的建筑的钻孔波速测试和覆盖层厚度分析均是基于相对现状地表标高进行的,而针对场地地表高差较大的山地区域,建筑方案实施时,对大部分楼座部位将出现高挖低填的情况,因此可能会改变该处楼座所在场地受地震作用时地震效应的传递规律,也即改变了该处的建筑场地类别。根据建筑方案实施后各楼座±0.00标高、竣工后周边场地标高和基底标高,核实建筑物所受地震效应的真实影响计算覆盖层厚度,并进一步细分判定各楼座所处场地建筑场地类别,为山地地区高差差异较大的建筑场地类别判别提供一种新方法。Borehole shear wave velocity measurement and thickness of overburden soil estimation for buildings in plain regions are based on the relative depth to the surface elevation.For the site preparation of construction projects in mountainous area,the foundations for a lot of buildings would experience cut or fill conditions.Therefore,the seismic site class might be changed,site seismic performance would be therefore different,so that the site seismic class might also be different at the project site.In this paper,based on datum at each building after the site preparation,and the proposed ground surface elevations adjacent to the proposed buildings,the average overburden soil thickness is re-estimated so that that the site seismic class at each building could be estimated.This paper provides a new method for the site seismic classification for building sites with significant elevation differences in the mountainous areas.

关 键 词：高差 建筑场地类别 覆盖层厚度 钻孔波速测试 判别方法 

分 类 号：P642[天文地球—工程地质学]