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摘要：
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本文根据摄动随机有限元模拟开挖过程的计算程序,计算了软粘土土坡的可靠度指标,并将其与极限平衡法计算得到的可靠度指标进行了分析比较;计算结果显示对于开挖形成的软粘土土坡随机有限元计算得到的可靠度指标较简化毕肖普法得到的可靠度指标要高。在程序中为了减少计算量对局部平均随机场采用了特征正交化技术,开挖模拟采用了应力静力平衡的方法。
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The reliability indexes for a soft clayey slope are calculated with a computer programme using perturbative stochastic finite element method to simulate the process of exacvation and are compared with the reliability indexes resulted from the limit equilibrium calculations.The calculated results show that ,for the excavated soft clayey slope,the reliability index derived from stochastic finite element calculations is higher than that derived from the simplified Bishop method.To minimize the volume of computations,the computer programme adopts the technique of characteristic orthogonalization for the local average stochastic fields and the excavation simulations adopt the method of stressstatic equilibrium
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作者简介：
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参考文献：
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