确定履带式起重机下地基承载力的方法  

Method of Determining the Bearing Capacity of Subgrade for Crawler Cranes

作　　者：林隆[1] 张淑华[1] 陆金虎 许娇娇[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《江南大学学报（自然科学版）》2014年第5期591-595,共5页Joural of Jiangnan University (Natural Science Edition)　

摘　　要：针对履带式起重机的地基承载力,将履带式起重机的偏心荷载等效成均布荷载,同时以履带式起重机的允许沉降量来确定地基承载力特征值。经过理论验证以及有限元模拟表明,等效均布荷载可以代替偏心荷载,履带式起重机的允许沉降要求比相对沉降法荷载板确定地基承载力的要求更加苛刻,这种方法理论上是安全的,可以为实际的工程设计提供参考。Few studies have been carried out on the bearing capacity of subgrade for crawler cranes. Because of the specific characteristics of crawler cranes to calculate the bearing capacity of crawler cranes directly by the formula of the bearing capacity of foundation of the building is not appropriate. This paper makes eccentric load equivalent to uniformly distributed load and determines the characteristic value of subgrade bearing capacity by the allowable settlement of crawler cranes. Through theoretical and finite element simulation, the equivalent uniformly distributed load can replace eccentric load. Crawler crane allowable settlement is more stringent than relative sedimentation load plate to determine the bearing capacity of foundation,so in theory this method is safe,and can provide a reference for practical engineering design.

关 键 词：地基承载力特征值 履带式起重机 偏心荷载 等效均布荷载 

分 类 号：TU312[建筑科学—结构工程]