等效时间计算方法研究  

Study on the calculation methods of equivalent time

作　　者：刘吉福[1,2,3] 郑刚[1] 安关峰[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]广州市市政集团有限公司,广东广州510060 [3]广东省航盛建设集团有限公司,广东广州511442

出　　处：《广西大学学报（自然科学版）》2012年第1期160-164,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51078263)

摘　　要：公路工程通常采用超载预压减少路基的工后次固结沉降,利用等效时间可以合理考虑超载预压减少工后次固结沉降的作用。为此,对等效时间的计算方法进行了研究,在等效时间已有计算方法的基础上提出了简化计算方法。算例计算结果表明,简化方法的计算结果与已有计算方法的基本相同,而且简单适用,有利于等效时间理论的推广应用和工后沉降的控制。Surcharge preloading is often used to decrease post-construction secondary consolidation settlement of highway embankment. This effect of surcharge preloading can be taken into account reasonably by use of equivalent time. In order to consider the effect of surcharge preloading, calculation methods of equivalent time are studied. A simplified method to calculate equivalent time is proposed based on present methods. The results given by the simplified method are nearly equal to those from present methods. The simplified method will benefit the application of equivalent time theory and the control of post-construction settlement.

关 键 词：等效时间 工后次固结沉降 超载预压 

分 类 号：TU433[建筑科学—岩土工程]