Bearing capacity improvement of square footing by micropiles

被引：25

作者：

Bhattacharjee, Arup ^{[1
]}

Mittal, Satyendra ^{[2
]}

Krishna, A. Murali ^{[3
]}

机构：

[1] Jorhat Engn Coll, Dept Civil Engn, Jorhat, Assam, India

[2] Indian Inst Technol Roorkee, Dept Civil Engn, Roorkee, Uttar Pradesh, India

[3] Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, India

来源：

INTERNATIONAL JOURNAL OF GEOTECHNICAL ENGINEERING | 2011年 / 5卷 / 01期

关键词：

Bearing capacity; improvement; micropile; settlement; vertical reinforcement;

D O I：

10.3328/IJGE.2011.05.01.113-118

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Micropiles are have been effectively used in many ground improvement applications to increase the bearing capacity and reduce settlement, particularly in strengthening existing foundations. This paper presents the results of laboratory model tests on the behavior of a square footing supported on micropiles. The parameters varied in the study include micropile diameter, length, spacing between the micropiles and distance of micropile from the edge of the footing. Bearing capacity of unreinforced and reinforced footings is determined and bearing capacity improvement factor and settlement reduction factors are evaluated. The results are then analyzed to study the effect of each parameter. The improvement of bearing capacity is noticed when the diameter and length of micropile increases and spacing between the micropiles and distance of micropile from edge of footing decreases.

引用

页码：113 / 118

页数：6

共 13 条

[1]

AKINMUSURU JO, 1981, J GEOTECH ENG-ASCE, V107, P819

[2]

Basett R.H., 1978, P S EARTH REINF, P202

[3]

Binquet J., 1975, J GEOTECH ENG, V101, P1257, DOI DOI 10.1061/AJGEB6.0000220

[4]

Binquet J., 1975, J GEOTECHNICAL ENG D, V101, P1241, DOI [10.1061/AJGEB6.0000219, DOI 10.1061/AJGEB6.0000219]

[5]

*FHWA, 1997, FHWARD96016 US DEP T, V1

[6]

FRAGASZY RJ, 1984, J GEOTECH ENG-ASCE, V110, P1500, DOI 10.1061/(ASCE)0733-9410(1984)110:10(1500)

[7]

Hari Krishna P., 2000, IGC 2000 MILL C, P325

[8] BEARING CAPACITY TESTS ON STRIP FOOTING RESTING ON REINFORCED SAND SUBGRADES [J].

MAHMOUD, MA ;

ABDRABBO, FM .

CANADIAN GEOTECHNICAL JOURNAL, 1989, 26 (01) :154-159

[9]

MANDAL JN, 1995, CONSTR BUILD MATER, V9, P35, DOI DOI 10.1016/0950-0618(95)92858-E

[10]

Milovic D., 1977, P 9 INT C SOIL MECH, V1, P651

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