极端冰雪灾害条件下建筑地基沉降分析探讨  

Foundation Settlement Analysis of Buildings Considering Extreme Ice Disasters

作　　者：宋西成[1] 张永兴[1,2] 王桂林[1,2] 

机构地区：[1]重庆大学土木工程学院重庆,400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400030

出　　处：《重庆工商大学学报（自然科学版）》2010年第4期394-398,共5页Journal of Chongqing Technology and Business University:Natural Science Edition

基　　金：国家科技支撑计划项目(2008BAC47B02)

摘　　要：介绍了冰雪冻融作用下建筑地基沉降的研究现状,在考虑极端冰雪灾害条件下修正了已有的建筑物地基沉降公式,根据试验结果分析了冻融循环对地基沉降的影响程度,最后通过一个典型实例计算出在极端冰雪灾害影响下修正压缩模量后的地基沉降量。结果表明:当压缩模量发生明显变化时建筑地基受影响地层沉降量变化明显,整体沉降增加;当压缩模量受影响变化不大时,沉降量变化很小,可以不把极端冰雪灾害的影响作为主要因素考虑。Firstly,the research status of the foundation settlement under the effect of freezing and thawing was introduced.Secondly,the formula of building foundation settlement was corrected when extreme snow disaster was considered,and analysis of influence on foundation settlement from freeze-thaw cycles was finished.Finally,a calculation example in condition of corrected compressibility modulus had been done.The results show that the settlement of the foundation in affected soil layers increases significantly and the total settlement increases and the compressibility modulus changes significantly;when it changes little,settlement changes little,the impact of extreme snow disaster is not the main factor of foundation settlement.

关 键 词：极端冰雪灾害 地基沉降 压缩模量 

分 类 号：TU43[建筑科学—岩土工程]