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.
出处
《土木工程学报》
EI
CSCD
北大核心
1998年第1期10-19,共10页
China Civil Engineering Journal
关键词
竖向排水井
固结
软粘土地基
砂井
地基加固
vertical drain well, viscoelastic characteristics, consolidation, well resistance, smear, free strain, equal strain.
