边坡开挖后，原有应力平衡遭破坏，若边坡过高、过陡，将产生失稳。
After the digging of a slope, its original stress equilibrium was broken. The slope would lose stability if the slope was high and steep enough.
应力平衡法以主梁弯矩合理为目标，通过主梁上下缘应力平衡来求得拉索索力。
The stress balance method aims at the girders' reasonable moment, getting the cable forces by balancing the stress in girder's upper and lower margin.
这种模型满足二维应力平衡条件、莫尔应变协调条件和混凝土双轴软化本构关系。
The model satisfies the two dimensional stress equilibrium, Mohr's cricular strain compatibility and softened biaxial constitutive laws of concrete.
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