软土地区地下室增层开挖对既有桩基沉降性状的影响OA北大核心CSCDCSTPCD
Settlement analysis of building piles associated with excavation beneath existing basement in soft soil
首先,通过荷载传递法建立轴向荷载作用下单桩的受力模型并得到其控制方程,然后引入桩侧软化及桩端双曲线荷载传递函数,同时给出极限侧摩阻力及极限端阻力的表达式。在此基础上,结合工程实例,通过自编的迭代程序得出单桩的p−s曲线,并与已有的计算方法进行比较,验证提出计算方法的可行性。研究开挖深度对若干关键问题的影响,如桩侧极限摩阻力、桩端极限阻力及基桩承载性状。最后结合案例分析增层开挖施工前后,单桩在极限承载力及工作荷载作用下产生的沉降量。研究结果表明:不…查看全部>>
Firstly, an axially-loaded pile model and a governing equation of single pile were established by the load transfer method. The skin friction softening model and pile tip load transfer model were then introduced, and the expression of ultimate skin friction and ultimate end resistance were derived. On this base, a case history was analyzed by employing an iterative process, thus the p−s curve of single pile was obtained. The feasibility of the proposed metho…查看全部>>
单华峰;夏唐代;俞峰;郑晴晴
浙江大学 滨海和城市岩土工程研究中心,浙江 杭州,310058 浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州,310058浙江大学 滨海和城市岩土工程研究中心,浙江 杭州,310058 浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州,310058
建筑与水利
软土开挖既有建筑桩基沉降极限阻力
soft soilexcavationexisting buildingpile settlementultimate resistance
《中南大学学报(自然科学版)》 2016 (6)
软土地区地下室增层开挖条件下既有桩基承载性状研究
1995-2000,6
国家自然科学基金资助项目(41472284,51378463)(Projects(41472284,51378463) supported by the National Natural Science Foundation of China)
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