SEISMIC BEARING CAPACITY OF SPREAD FOUNDATIONS ON SLOPING GROUND USING LIMIT ANALYSIS

摘要：

The seismic bearing capacity factors of spread and embedded foundations on sloping ground have been theoretically investigated. The pseudo-static approach was used, and the seismic forces consisted of a horizontal load applied to the foundation and the inertia of the soil mass. The upper-bound method of limit analysis was employed and a non-symmetrical failure mechanism was further proposed. The mechanism was composed of a triangular active wedge, a logarithmic spiral shear zone and a passive wedge. The shear transfer coefficient was introduced to calculate the seismic bearing capacity of spread foundations with variable shear transfer. The validity of the results from the present analysis was confirmed by comparing with other investigators results. Finally, the lowest upper-bound solutions of the seismic bearing capacity factors were presented in the form of design charts for practical use. The seismic bearing capacity factors reduce considerably with the increase of horizontal seismic coefficient. In addition, the magnitudes of bearing capacity factors decrease further with the increase of slope inclination.

关键词： Seismic Bearing Capacity Foundations Limit Analysis Slope

作者: KENTARO YAMAMOTO MIZUKI HIRA NORITAKA ARAMAKI

作者单位: Department of Ocean Civil Engineering, Kagoshima University, Korimoto 1-21-40, Kagoshima, 890-0065, Dept.of Environmental Sciences and Technology, Kagoshima University, Korimoto 1-21-24, Kagoshima, 89 Department of Eco design, Sojo University, Ikeda 4-22-1, Kumamoto, 860-0082,Japan

会议类型: 国际会议

会议名称: 第三届中日岩土工程研讨会(Proceedings of the 3rd Sino-Japan Geotechnical Symposium)

会议地点: 重庆

会议语种:英文

页码: 659-668

在线出版日期: 2007-11-05（万方平台首次上网日期，不代表论文的发表时间）