排水固结加固高速公路深厚软基工后沉降  

Study on post-construction settlement of thick soft roadbed improved by drainage preloading

作　　者：赵维炳[1] 艾英钵[2] 张静 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]河海大学岩土工程研究所,江苏南京210098 [3]南京市地下铁道总公司,江苏南京210024

出　　处：《水利水运工程学报》2003年第1期28-33,共6页Hydro-Science and Engineering

基　　金：国家自然科学基金资助项目 (5 0 2 790 2 1)

摘　　要：结合广珠东线高速公路深厚软基堆载预压和真空联合堆载预压两现场试验段 ,应用固结、流变和损伤理论对路基工后沉降规律进行有限元分析 .结果表明 ,下卧层的主固结压缩和整个路基的次固结压缩是高速公路路基工后沉降的主要组成 。By using finite element method and theory of consolidation, rheology and damage, the post construction settlement of thick soft roadbed improved by surcharge preloading and vacuum surcharge preloading is calculated considering two in situ experiments in Guang Zhu Expressway. Calculation results show that the primary consolidation of underlying stratum and the second consolidation of roadbed are major factors of the total post construction settlement of expressway roadbed, so the post construction settlement must be controlled in foundation improvement.

关 键 词：软基 真空联合堆载预压法 堆载预压法 工后沉降 有限单元法 高速公路 

分 类 号：TU433[建筑科学—岩土工程]