Optimum PVD installation depth for two-way drainage deposit

被引：12

作者：

Chai, J. -C. ^{[1
]}

Miura, N. ^{[2
]}

Kirekawa, T. ^{[2
]}

Hino, T. ^{[3
]}

机构：

[1] Saga Univ, Dept Civil Engn, Saga 8408502, Japan

[2] Inst Soft Ground Engn Co Ltd, Saga 8400811, Japan

[3] Saga Univ, Inst Lowland Technol, Saga 8408502, Japan

来源：

GEOMECHANICS AND ENGINEERING | 2009年 / 1卷 / 03期

关键词：

prefabricated vertical drain (PVD); ground improvement; vacuum consolidation; laboratory test; pre-loading; soft clayey deposit;

D O I：

10.12989/gae.2009.1.3.179

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

For a two-way drainage deposit under a surcharge load, it is possible to leave a layer adjacent to the bottom drainage boundary without prefabricated vertical drain (PVD) improvement and achieve approximately the same degree of consolidation as a fully penetrated case. This depth is designated as an optimum PVD installation depth. Further, for a two-way drainage deposit under vacuum pressure, if the PVDs are fully penetrated through the deposit, the vacuum pressure will leak through the bottom drainage boundary. In this case, the PVDs have to be partially penetrated, and there is an optimum installation depth. The equations for calculating these optimum installation depths are presented, and the usefulness of the equations is studied by using finite element analysis as well as laboratory model test results.

引用

页码：179 / 191

页数：13

共 10 条

[1] Proposed criteria for discharge capacity of prefabricated vertical drains [J].