摘要
为了研究弹性模量对边坡安全系数和滑动面的影响,建立均质土坡数值模型,在不同工况下(无锚和有锚),分别改变弹性模量,分析它与安全系数和滑动面的关系.结果表明:(1)无锚时,E_s对其安全系数的影响十分微小,并且各个滑动面的位置也基本重合.(2)有锚情况,当E_s小于锚杆弹性模量E_b时,E_s对边坡安全系数的影响较小.当E_s等于E_b和10 E_b时,边坡的安全系数明显减小;继续增大E_s,边坡安全系数逐渐减小,且幅度也不断减小.
In order to study the effect of elastic modulus Es to the safety factor and slip plane of slope, a numerical model is founded in plane strain mode for homogeneous soil slope. The safety factor and slip plane are obtained for different elastic modulus, and the relationship of Es , safety factor and slip plane are analyzed under different situations （slope with bolt reinforcement and slope without bolt reinforcement）. The results show that （1） without bolt in slope. Es affect little in the safety factor and slip plane; （2） with bolt in slope. Es is smaller than Eb , which is the elastic modulus of boh. When Es equals to Eb and 10 Eb , F decreases abruptly; but the trend become slowly.
出处
《怀化学院学报》
2008年第11期152-154,共3页
Journal of Huaihua University
基金
福建省自然科学基金项目(D0540006)
莆田市科技局项目(2004S11)
关键词
边坡
强度折减
滑动面
安全系数
弹性模量
slope
strength reduction
slip plane
safety factor
elastic modulus
