Development of new prediction model for capacity of combined pile-raft foundations

被引：73

作者：

Kumar, Ashutosh ^{[1
]}

Choudhury, Deepankar ^{[1
,2
]}

机构：

[1] Indian Inst Technol, Dept Civil Engn, Bombay 400076, Maharashtra, India

[2] Acad Sci & Innovat Res AcSIR, CSIR Campus, New Delhi, India

来源：

COMPUTERS AND GEOTECHNICS | 2018年 / 97卷

关键词：

Piled raft; Rafts; Bearing capacity; Design; Finite-element modeling; BEARING CAPACITY; CIRCULAR FOOTINGS; SETTLEMENT; DESIGN; SANDS; BASE;

D O I：

10.1016/j.compgeo.2017.12.008

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The complex soil-structure interaction factors to estimate load bearing capacity of a combined pile-raft foundation (CPRF) is scarce. A new prediction method is proposed to estimate both Ultimate Limit State (ULS) and Serviceability Limit State (SLS) bearing capacity of CPRF by evaluating the pile-raft and raft-pile interaction factors. The developed model is validated with available experimental results. The simplified expressions for the evaluation of load-sharing ratio and a mobilized factor of safety of CPRF considering the serviceability requirement of the structure are also proposed. It provides a simple design solution for CPRF subjected to vertical loading condition.

引用

页码：62 / 68

页数：7

共 31 条

[11] On the definition of raft-soil stiffness ratio for rectangular rafts [J].

Horikoshi, K ;

Randolph, MF .

GEOTECHNIQUE, 1997, 47 (05) :1055-1061

[12]

Katzenbach R., 2000, Design Applications of Raft Foundations, P323, DOI [DOI 10.1680/DAORF.27657, DOI 10.1680/DAORF.27657.0013]

[13]

Ketzenbach R, 2016, FDN SYSTEMS HIGH RIS, P1

[14]

Kumar A., 2015, DISASTER ADV, V8, P33

[15]

Kumar A, 2017, GEOTECH ENG, V48, P95

[16] Soil-structure interaction in a combined pile-raft foundation - a case study [J].

Kumar, Ashutosh ;

Patil, Milind ;

Choudhury, Deepankar .

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING, 2017, 170 (02) :117-128

[17] Effect of Earthquake on Combined Pile-Raft Foundation [J].

Kumar, Ashutosh ;

Choudhury, Deepankar ;

Katzenbach, Rolf .

INTERNATIONAL JOURNAL OF GEOMECHANICS, 2016, 16 (05)

[18] DSSI analysis of pile foundations for an oil tank in Iraq [J].

Kumar, Ashutosh ;

Choudhury, Deepankar .

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-GEOTECHNICAL ENGINEERING, 2016, 169 (02) :129-138

[19]

Lee J, 2005, J GEOTECH GEOENVIRON, V131, P442, DOI 10.1061/(ASCE)1090-0241(2005)131:4(442)

[20] Determination of pile base resistance in sands [J].

Lee, JH ;

Salgado, R .

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 1999, 125 (08) :673-683

← 1 2 3 4 →