竖向排水井地基粘弹性固结解析理论  

VISCOELASTIC CONSOLIDATION THEORIES OF SOILS WITH VERTICAL DRAIN WELLS

作　　者：刘兴旺[1] 谢康和[2] 潘秋元[2] 曾国熙[2] 

机构地区：[1]浙江省建筑设计研究院 [2]浙江大学

出　　处：《土木工程学报》1998年第1期10-19,共10页China Civil Engineering Journal

摘　　要：本文基于Merchant模型分别推导了自由应变条件和等应变条件下打穿软粘土层的竖向排水井地基粘弹性固结问题解析解,同时考虑了井阻和涂抹作用的影响.并将两种形式的解编制成相应的计算程序,据此对粘弹性参数的变化进行了大量的计算,探讨了竖向排水井地基粘弹性固结的一般规律.最后利用本文的解对杭甬高速公路试验段塑料排水板软基沉降进行了计算,结果表明粘弹性固结理论较现有线弹性固结理论更加接近实际.The rigorous solutions are derived for the consolidation problems of soils with drain wells through soft clay layer by use of the Merchant model under both free strain and equal strain conditions and in consideration of the effects of both well resistance and smear action. With these solutions, the consolidation behavior of soils exhibiting viscoelastic characteristics is analyzed and the influences of every viscoelastic parameter on the consolidation process are discussed. Finally, the settlement of the soft ground improved by band-shaped vertical drain wells underneath Hang-Yong Freeway is calculated using the above theory, it shows that the result is more satisfactory than those given by linear elastic theory.

关 键 词：竖向排水井 固结 软粘土地基 砂井 地基加固 

分 类 号：TU472.33[建筑科学—结构工程] TU446[建筑科学—土工工程]