The presented computation methods are also applicable to stability analysis of catch drain, impended wall, open caisson and other excavation works during construction.
所述计算原则和方法也适用于分析截水槽、倒挂井、沉井及其他土石开挖工程在施工期的稳定性。
A series of measures such as open caisson, thickening protective wall and decreasing length, etc. are taken to overcome problems of sand drafting, collapse and water gushing, which get better effect.
施工中采用沉井法、增加护壁厚度、减小长度等一系列措施，克服了流砂、坍孔、涌水等难点，取得了较好的效果。
The method of using thin-wall caisson as the supporting structure is quick and economical.
采用薄壁沉箱作为开挖的支护结构，施工快捷又经济合理。
The steel bar of midspan also come to the yield strength when the load increased. At this time, the caisson has been destroyed, because the partition wall has already been a variable body system.
两端加强角处钢筋首先达到屈服，形成塑性铰，荷载继续增大时，中间钢筋也达到屈服，此时沉箱隔墙已相当于一个可变体系，可认为结构已经破坏。
The steel bar of midspan also come to the yield strength when the load increased. At this time, the caisson has been destroyed, because the partition wall has already been a variable body system.
两端加强角处钢筋首先达到屈服，形成塑性铰，荷载继续增大时，中间钢筋也达到屈服，此时沉箱隔墙已相当于一个可变体系，可认为结构已经破坏。
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