Field Studies on the Bearing Mechanism of Belled Columns Formed by Jet Grout

›› 2012, Vol. 26 ›› Issue (1): 70-73.

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Field Studies on the Bearing Mechanism of Belled Columns Formed by Jet Grout

LI Bing1，GUO Kecheng1，JIANG Chong2, Hu Yifu2

(1.Qiancheng Geotechnical engineering corp. wuhan 430062;2.School of Resources and Safety Engineering, Central South University, Changsha 410083)

Received:2011-11-10 Online:2012-02-20 Published:2012-03-23

Abstract

Abstract: This case study presents the results of column supported foundation by both the conventional jet grout and the jet grout expanded bases in a soil improvement project for a food storage garages and yards. The ground surface settlements, soil mass deformations, lateral deflections of soil around the columns, excessive pore pressures and the stress ratioes were monitored by the geotechnical instrumentations. The site was also tested by the field vane shear, cone penetration and static plate loading tests before and after the soil improvement. The results indicate that the belled column has a better performance compared with the conventional jot grout columns.

Key words: column supported foundation, composite ground, belled columns formed by jet grout, bearing mechanism, field testing

LI Bing1，GUO Kecheng1，JIANG Chong2, Hu Yifu2. Field Studies on the Bearing Mechanism of Belled Columns Formed by Jet Grout[J]. , 2012, 26(1): 70-73.

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Field Studies on the Bearing Mechanism of Belled Columns Formed by Jet Grout

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