Behaviour of Winged PVD and the Method for Calculating Its Induced Degree of Consolidation

被引：8

作者：

Chai, Jinchun ^{[1
]}

Saito, Akinori ^{[1
]}

Hino, Takenori ^{[1
]}

Negami, Takehito ^{[1
]}

机构：

[1] Saga Univ, Fac Sci & Engn, Honjo 1, Saga 8408502, Japan

来源：

INTERNATIONAL JOURNAL OF GEOSYNTHETICS AND GROUND ENGINEERING | 2022年 / 8卷 / 04期

基金：

日本学术振兴会;

关键词：

PVD; Vacuum consolidation; Clay; FEM;

D O I：

10.1007/s40891-022-00394-y

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

To reduce the obstacle effect of apparent clogging around prefabricated vertical drains (PVDs) in vacuum consolidation projects, a method of using a new type PVD, winged-PVD (WPVD) was investigated. First, a new structure of WPVD has been proposed, which is easier to be manufactured and installed into the field. Then the results of finite element analysis (FEA) and laboratory model tests indicate that WPVDs have higher capacity of accelerating the rate of a vacuum consolidation than that of ordinary PVDs, because they can mitigate the effect of apparent clogging. Finally, an explicit method (equation) for calculating a WPVD induced degree of consolidation has been established using equivalent drain diameter concept. The method has been validated by both the results of FEA and laboratory model tests.

引用

页数：11

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