Gibson地基与均匀地基承载力之间的相似关系  

Analogous relationship of bearing capacity to Gibson foundation of homogeneous foundation

作　　者：王海波[1] 吕伟华[1] 刘成[1] WANG Hai-bo,LU Wei-hua, LIU Cheng(School of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Chin)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《兰州理工大学学报》2018年第3期119-122,共4页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51508279);江苏省自然科学基金(BK20150885);江苏省高校优势学科建设工程资助项目(PAPD)

摘　　要：应用弹性理论和太沙基塑性区发展的理论,探讨Gibson非均质地基的承载能力.理论推导在条形均布荷载作用下此类非均匀地基临塑区的边界方程,分析地基的临塑荷载和临界荷载.通过与均匀地基临界荷载的经典解答进行比较,考察此类非均匀地基与均匀地基临界荷载之间的相似性,进而得到各承载力系数之间解答的相似转换关系,给出相应转换系数的解析表达式.借助均匀地基承载力的解答,可将非均匀地基承载力问题求解转化为相似转化系数的计算问题,从而为非均匀地基承载力的求解提供便捷有效的途径,便于工程应用.By means of application of elastic theory and plastic zone development theory,the bearing capacity of Gibson non-homogeneous foundation was explored.The boundary equation of this category of non-homogeneous foundation plastic zone was theoretically deduced and the critical plastic load and critical load upon the foundation were analyzed under strip uniform load.By means of comparing to the classic solution of critical load upon homogeneous foundation,the analogy of critical load between this category of non-homogeneous and homogeneous foundation was investigated,the analogous transformation relation of the solution of every capacity factor coefficients was further obtained,and the analytic expressions of corresponding transformation coefficients were given out.The problem of solutions of bearing capacity of nonhomogeneous foundation can be converted into a computation problem of analogous transformation coefficients,so that providing a easy,quick,and effective way for the solution of bearing capacity of non-homogeneous foundation and conveniencing its application in engineering.

关 键 词：GIBSON地基 地基承载力 临塑荷载 临界荷载 相似关系 

分 类 号：TU470[建筑科学—结构工程] O343.7[建筑科学—土工工程]