基于包头某项目不同液化判别方法的对比分析  

作　　者：张小蕾 

机构地区：[1]上海京海工程技术有限公司,上海200137

出　　处：《科技创新与应用》2023年第12期93-97,共5页Technology Innovation and Application

摘　　要：地震液化严重威胁建(构)筑物的安全,岩土工程勘察中对拟建场地的液化判别是一项非常重要的工作。我国现阶段对砂土液化判别的规范很多,不同规范之间液化判别的方法、标准也不尽相同,判别出的结果也有一定差异性。该文通过采用《建筑抗震》《铁路抗震》和《公路抗震》等规范对包头某项目场地液化判别进行对比。在判别深度的划分上面,《建筑抗震》和《公路抗震》根据各自建(构)筑物的结构形式和地基基础划分更为合理;3种规范的判别公式各不相同,综合来看《建筑抗震》公式采用拟合曲线表现形式,更为合理;不同规范对同一场地的液化判别可能不同,各规范有自己的适用范围和侧重点,液化判别过程中可以一种规范为主,参考其他规范综合评判,提高可靠性。Earthquake liquefaction is a serious threat to the safety of construction structures.In geotechnical engineering investigation,the liquefaction discriminant is a very important work.At present in our country,there are many norms of liquefaction discriminant,the method and standard of liquefaction discriminant between different norms are not the same,and the result that discriminant also has some difference.This paper compares the liquefaction discrimination of a project site in Baotou using"Building Seismic Resistance","Railway Seismic Resistance"and"Road Seismic Resistance".In the division of discriminant depth,"Building Seismic Resistance"and"Road Seismic Resistance"are more reasonable according to the structure form and foundation of their respective structures;The discriminant formulas of the three codes are different.In summary,it is more reasonable for the formula of"Building Seismic Resistance"to use the form of fitting curve;and Different specifications may differ in the liquefaction judgment of the same site,and each specification has its own scope of application and focus.In the process of liquefaction judgment,one specification can be the main criterion,and comprehensive evaluation can be made by referring to other specifications to improve reliability.

关 键 词：液化判别 原位测试 对比分析 地基基础 工程勘察 

分 类 号：TU195[建筑科学—建筑理论]