后期大面积填土工程勘察液化计算问题探讨  

Discussion on liquefaction calculation for large-area landfill sites in the later period

作　　者：王世岐 梁海 Wang Shiqi;Liang Hai(CIGIS(CHINA)LIMITED,Beijing 100007,China)

机构地区：[1]建设综合勘察研究设计院有限公司,北京100007

出　　处：《工程勘察》2022年第4期21-24,78,共5页Geotechnical Investigation & Surveying

摘　　要：对勘察之后进行场地大面积填土的工程进行研究,认为后期填土对场地液化判别计算结果有影响。首先应该从大的区域性概念来判断填土的形式,重点判断其对地下水长期涵养条件的影响,从而调整水位相关数据。提出的结论及建议为:液化计算起始标高应选用填土后的地面标高;应调整液化判定计算公式的参数取值;应重视后期填土材料自身的可液化性及其对标贯击数提高的长期影响问题,条件允许时应进行补充勘察。The large-area landfill sites in the later period after the survey are studied, and it is considered that the fillings have effects on the results of liquefaction determination. Firstly, the model of filling should be judged from the large regional concept, and its effect on the long-term conservation conditions of groundwater should be judged, so as to adjust the groundwater level data. The conclusions and recommendations are put forward that the ground elevation after filling should be selected for the starting elevation of liquefaction calculation;the parameter values of the calculation formula for liquefaction determination should be adjusted;the potential liquefaction of the filling material and its long-term influence on the improvement of the hit numbers of SPT should be paid attention to, and additional surveys should be carried out when the conditions permit.

关 键 词：后期大面积填土场地 地下水位 液化计算 

分 类 号：TU441[建筑科学—岩土工程]