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武汉地区直立开挖的市政基坑一般采用灌注桩结合内支撑支护,或者采用SMW工法桩结合内支撑支护。两种方法造价均较高,工期较长,并且会破坏地下水的渗透路径和自然补给。若采用组合钢板桩结合内支撑支护,在技术上具有可行性,在经济和工期上也具有很大优势。组合钢板桩支护体系可完全回收,不会对地下水的渗透路径和自然补给造成破坏,值得推广应用。
Municipal excavation of upright excavation in Wuhan generally use bored piles combined with the support within the support, or with SMW pile method combined with the support within the support. Both methods have higher costs and longer lead times, and can destroy groundwater infiltration paths and natural recharge. If the combination of steel sheet piles combined with the support within the support, technically feasible, in terms of economy and duration also has great advantages. Combined steel sheet pile support system can be completely recovered, will not cause damage to the infiltration path of groundwater and natural recharge, which is worth popularizing and applying.