Elliptical cylindrical equivalent model of PVD-assisted consolidation under surcharge combined with vacuum preloading and its application

被引：14

作者：

Tian, Yi ^{[1
]}

Jiang, Guosheng ^{[1
]}

Wu, Wenbing ^{[1
,2
,3
,4
,5
]}

Wen, Minjie ^{[3
]}

Zhang, Ziting ^{[1
]}

El Naggar, M. Hesham ^{[1
,5
]}

Mei, Guoxiong ^{[1
,4
]}

Dong, Youkou ^{[1
,2
]}

机构：

[1] China Univ Geosci, Fac Engn, Zhejiang Inst, Wuhan 430074, Hubei, Peoples R China

[2] China Univ Geosci, Coll Marine Sci & Technol, Wuhan 430074, Hubei, Peoples R China

[3] Zhejiang Univ, Res Ctr Coastal Urban Geotech Engn, Hangzhou 310058, Peoples R China

[4] Guangxi Univ, Coll Civil Engn & Architecture, Guangxi Key Lab Disaster Prevent & Struct Safety, Nanning 530004, Guangxi, Peoples R China

[5] Western Univ, Geotech Res Ctr, Dept Civil & Environm Engn, London, ON N6A 5B9, Canada

来源：

COMPUTERS AND GEOTECHNICS | 2021年 / 139卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Foundation improvement; Elliptical cylindrical equivalent model; Prefabricated vertical drain; Analytical solution; Settlement; PREFABRICATED VERTICAL DRAINS; SOFT BANGKOK CLAY; SMEAR ZONE; RADIAL CONSOLIDATION; SOIL IMPROVEMENT; PERFORMANCE; SIMULATION;

D O I：

10.1016/j.compgeo.2021.104389

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

To consider the shape effect of band prefabricated vertical drain (PVD), an elliptical cylindrical equivalent model of PVD-improved foundation including horizontal and vertical drainage is built, and then the analytical solutions of the excess pore-water pressure and the degree of consolidation under a combined vacuum pressure with timedependent surcharge load are derived. For the elliptical cylindrical equivalent model, the determinations of parameters related to well resistance and smear effect are discussed. Based on the present solutions, existing commonly-used methods for settlement prediction are remedied and applied in four cases with different loading histories and known parameters. Satisfactory agreement between predictions and measured data verifies the rationality and adoptability of the present methodology to predict settlement. A comprehensive method to predict settlement is presented for practical application.

引用

页数：18

共 50 条

[1] Equivalent diameter of a prefabricated vertical drain [J].

Abuel-Naga, Hossam ;

Bouazza, Abdelmalek .

GEOTEXTILES AND GEOMEMBRANES, 2009, 27 (03) :227-231

[2]

Asaoka A., 1978, Soils and Foundations, V18, P87, DOI [DOI 10.3208/SANDF1972.18.4_87, 10.3208/sandf1972.18.487]

[3]

BARRON RA, 1948, T AM SOC CIV ENG, V113, P718

[4] SMEAR EFFECTS OF VERTICAL DRAINS ON SOFT BANGKOK CLAY [J].

BERGADO, DT ;

ASAKAMI, H ;

ALFARO, C ;

BALASUBRAMANIAM, AS .

JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE, 1991, 117 (10) :1509-1530

[5] Prefabricated vertical drains (PVDs) in soft Bangkok clay: a case study of the new Bangkok International Airport project [J].

Bergado, DT ;

Balasubramaniam, AS ;

Fannin, RJ ;

Holtz, RD .

CANADIAN GEOTECHNICAL JOURNAL, 2002, 39 (02) :304-315

[6]

Carrillo N., 1942, J MATH PHYS CAMB, V21, P1, DOI DOI 10.1002/SAPM19422111

[7]

Carslow H.S., 1959, Conduction of heat in solids

[8] Vacuum consolidation and its combination with embankment loading [J].

Chai, J. -C. ;

Carter, J. P. ;

Hayashi, S. .

CANADIAN GEOTECHNICAL JOURNAL, 2006, 43 (10) :985-996

[9] Investigation of factors affecting vertical drain behavior [J].

Chai, JC ;

Miura, N .

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 1999, 125 (03) :216-226

[10] Evaluation of Effective Depth of PVD Improvement in Soft Clay Deposit: A Field Case Study [J].

Chen, Jun ;

Shen, Shui-Long ;

Yin, Zhen-Yu ;

Xu, Ye-Shuang ;

Horpibulsuk, Suksun .

MARINE GEORESOURCES & GEOTECHNOLOGY, 2016, 34 (05) :420-430

← 1 2 3 4 5 →