Influence of construction machinery eccentric load on stability of trench excavation

FANG Ming; YANG Junjie; XU Guohui; TOYOSAWA Y; HORIYI N; ITOH K

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Volume 30 Issue 5

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Chinese Journal of Geotechnical Engineering > 2008 > 30(5): 705-711.

FANG Ming, YANG Junjie, XU Guohui, TOYOSAWA Y, HORIYI N, ITOH K. Influence of construction machinery eccentric load on stability of trench excavation[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(5): 705-711.

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Influence of construction machinery eccentric load on stability of trench excavation

1.College of Environmental Science and Engineering Ocean University of China Qingdao 266100 China 2.Key Lab of Marine Environmental Science and Ecology Ministry of Education Ocean University of China Qingdao 266100 China 3.The National Institute of Industrial Safety Tokyo 1138656 Japan

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Published Date: May 14, 2008

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Abstract

Abstract

The influence of the construction machinery eccentric load on trench stability was studied by centrifuge model tests simulating the process of trench excavation.It was shown that the failure mechanism agreed well with that under the central load of construction machine.Therefore,the simplified expression for the upper-bound of excavation depth under the central load could be applied to that under the construction machinery eccentric load.The validity of the results from the simplified expression for the upper-bound solution was confirmed by comparing with the centrifuge test results.It was indicated that the influence of eccentricity on excavation depth increased with the increase of contact pressure.
- construction machinery eccentric load,
- excavation,
- trench,
- stability,
- centrifuge model test,
- upper-bound solution