土质层状地基与相应桩端持力层极限承载力差异性研究  

Study on differences between ultimate bearing capacity on natural foundations and on pile tips in layered soil strata

作　　者：周爱其[1] 

机构地区：[1]杭州市勘测设计研究院,浙江杭州310012

出　　处：《岩土工程学报》2007年第4期608-611,共4页Chinese Journal of Geotechnical Engineering

摘　　要：本文研究与比较了土质地基中地基极限承载力和相应桩端持力层极限承载力两者在概念、破坏模式、假设条件等方面的不同,并基于Meyerhof极限承载力破坏模式,讨论并提出了土质层状地基极限承载力与相应桩端持力层极限承载力破坏模式;指出了两者的本质差异,并对影响极限端承力发挥的若干情况进行了讨论,得出若干结论,对具体工程勘察设计具借鉴意义。Differences between the ultimate bearing capacity on natural foundations and on pile tips in soil strata were studied and compared in respect of concept, mode of failure, assumed conditions and so on. Based on the Meyerhof failure mode of the ultimate bearing capacity, the mode of failure in layered soil strata was discussed and proposed, and the essential difference between the ultimate bearing capacity on natural foundations and on pile tips was indicated. Some conclusions were drawn which could be used as references for some practical engineering projects.

关 键 词：土质层状地基 Meyerhof极限承载力破坏模式 刚塑性体 极限平衡条件 等代自由面 抗剪强度动用系数 

分 类 号：TU473[建筑科学—结构工程]