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| Research on the Safe Bridge Foundation Position on High Steep Slope |
| ZHAO Wen1, XIE Qiang1, LI Ya2 |
| 1.Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2.Xihua University, Chengdu, Sichuan 610039, China |
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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.
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Received: 20 October 2005
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| [3] |
谢强.铁路岩石边坡研究[D].成都:西南交通大学,1998.
|
| [5] |
Bienlawski Z. T. The Geomechanics Classification in Rock Engineering Applications[A]. Proc. 4th int. cong. On rock mech, 1979, (1):55-95.
|
| [1] |
李秉生.水体对铁路岩石边坡岩体质量及坡度设计的影响[J].西南交通大学学报, 1991,(2):30-33.
|
| [4] |
Bienlawski Z. T. Engineering Rock Mass Classification[M]. Intercience Publication, Viley, New York, 1993.
|
| [2] |
谢强.道路岩石边坡坡度确定方法的研究[J].中国公路学报,2000,13(2):24-26.
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2006, Vol. 23 
