岩土力学Issue(12)：3567-3572,3579,7.
预应力锚杆柔性支护喷射混凝土面层上的土压力
Earth pressure on shotcrete of flexible retaining method with prestressed anchor
摘要
Abstract
A new earth pressure expression is derived to calculate the earth pressure on the shotcrete of flexible retaining method with prestressed anchor in order to solve the computation model of earth pressure on the shotcrete in the anchor shotcrete support design on the base of two-dimensional soil arch. And the distribution of earth pressure on the shotcrete along the depth is established. The values of earth pressure from this paper are compared with those calculated by silo method from the Specifications of design for geological hazard stabilization for different soil parameters, such as soil cohesion c , soil internal friction angle, soil-shotcrete friction angle and horizontal distance l between the adjacent anchors. The results show that the earth pressure on the shotcrete increases with decreasing ; and values are greater than those calculated by silo method for a small . The maximum earth pressure is proportional to l while c has no effect on the maximum earth pressure. Variation in parameter has a significant effect on the earth pressure and should not be neglected for engineering design because of the contribution for decreasing the earth pressure on the shotcrete. Finally, a simplified expression for calculating earth pressure on shotcrete is provided.关键词
土拱效应/喷射混凝土/土压力/锚杆Key words
soil arching effects/shotcrete/earth pressure/anchor分类
交通工程引用本文复制引用
涂兵雄,贾金青,王海涛,蔡燕燕,俞缙..预应力锚杆柔性支护喷射混凝土面层上的土压力[J].岩土力学,2013,(12):3567-3572,3579,7.基金项目
国家自然科学基金项目（No.51308234）；福建省自然科学基金项目（No.2013J05079）；厦门市科技计划项目（No.3502Z20133021）；泉州市科技计划项目（No.2012Z92）。 （）
