期刊论文、会议论文

Field test on behaviours of marine soft soil foundation treated with plastic drainage plate and sand column combined with surcharge preloading

中文

岩土力学

1000-7598

2015

36

S2

551-558

第十二届全国桩基工程学术会议

第十二届全国桩基工程学术会议论文集

2015-10-14

重庆

中国土木工程学会<&wdkj&>中国工程建设标准化协会

10.16285/j.rsm.2015.S2.077

国家自然科学基金(No.51308198) 湖南省教育厅资助科研项目(No.14B034) 湖南省科技计划项目(No.2014SK3180)

本校为第一机构

针对场地内夹杂岸堤、塘埂和人行道路网的深厚海相软土地基处理,提出塑料排水板和袋装砂井联合堆载预压加固方法,并通过现场试验研究该类地基在路堤填筑及堆载预压过程中的地表及深层沉降特性、超孔隙水压力消散机制和地基水平位移规律等工作性状。结果表明,采用该方法处理深厚海相软土地基具有良好的加固效果,地基沉降大部分在填筑期和预压期间发生,有效降低了场地的工后沉降和施工工期,可为沿海深厚复杂海相软土地基加固处理提供参考;塑料排水板和袋装砂井联合堆载预压处理地基的沉降-时间曲线呈多级式发展,袋装砂井处理部位的沉降量小于塑料排水板处;软基上部土体的排水效果明显优于中、下部...

In order to solve the technical difficulties to reinforce the deep marine soft soil foundation that including walkway network, the reinforcing technology by plastic drainage plate and sand column combined with surcharge preloading is proposed to reinforce the large scale complex deep marine soft soil foundation. The mechanical behaviors of the reinforced soft soil foundation during embankment filling and preloading are studied including the surface settlement and deep settlement characteristics, the excess pore water pressure dissipation mechanism, and the horizontal displacement law by field ...