Abstract：Research purposes: The bridge foundation position on high-steep slope has great effect on stability of slope and bridge; it also affects the technical index and cost of bridge. The bridge foundation position on high-steep slope is not specified definitely in current corresponding norms or hand books.
Research methods: The mechanical behavior characteristics of rock mass of slope under load are the basis of bridge foundation position determining. In this paper, the influences of load on rock mass stress in different geometric conditions of slope are analyzed with numerical method.
Research results: According to the change characteristics of influence range of rock mass stress under load, a principle of determining safe bridge foundation position on high steep slope is put forward. The stress influence range of rock mass slope is mainly related with load intensity, bride foundation width, slope angle, bridge foundation position. According to the relations between the maximum influence coefficients of rock mass stress on sloping surface and each influencing factor, a formula determining safe bridge foundation position on high steep slope is put forward at last when the influence coefficient of rock mass stress is limited by rock mass quantity.
Research conclusions: Engineering practice shows the method of determining bridge foundation on high-steep slope in this paper is convenient and applicable.
赵文，谢强，李娅. 高陡边坡桥基安全距离研究[J]. 铁道工程学报, 2006, 23(6): 47-50.
ZHAO Wen, XIE Qiang, LI Ya. Research on the Safe Bridge Foundation Position on High Steep Slope. 铁道工程学报, 2006, 23(6): 47-50.
2006, Vol. 23 
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