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A platform for research: civil engineering, architecture and urbanism
Pipe-jacking circular open caisson drainage sinking construction method
The invention provides a pipe-jacking circular open caisson drainage sinking construction method which comprises the steps that according to the diameter of an open caisson and the size of a foundation pit, double rows of jet grouting waterproof curtain piles are arranged outside the open caisson foundation pit, and underground water outside the open caisson is separated; three rows of jet grouting sinking stopping piles are arranged at the blade foot bottom of the open caisson, and hollow piles are arranged above the blade foot to prevent the open caisson from sinking excessively; the double rows of jet grouting reinforcing piles are arranged at the reserved hole of the jacking pipe, collapse after the reserved hole is chiseled away is prevented, the sinking height of the open caisson is reduced, and the soil taking efficiency of dry operation is high. A small excavator can be arranged in the well when the height-increasing open caisson sinks and borrows soil, a small excavator can be arranged in the well when the height-increasing open caisson sinks and borrows soil through manual cooperation, and manual cooperation is achieved; three rows of jet grouting sinking stopping piles are arranged at the blade foot bottom of the open caisson, double rows of jet grouting reinforcing piles are arranged at a reserved hole of a jacking pipe, drainage holes in the well assist in drainage, the treatment procedures of sinking stopping of the open caisson and reserved pipeline holes are preposed, the construction cost is low, the sinking precision of the open caisson is high, and the construction period is short.
本发明提供一种顶管圆形沉井排水下沉施工方法，根据沉井直径、基坑尺寸，在沉井基坑外设置双排旋喷止水帷幕桩，隔断沉井外地下水；在沉井刃脚底设置3排旋喷止沉桩，刃脚以上为空桩，防止沉井超沉；在顶管预留洞口设置双排旋喷加固桩，防止预留洞口凿除后坍塌，减少沉井下沉的高度，干作业取土效率高。接高沉井下沉取土可在井内布置小型挖掘机、人工配合作业接高沉井下沉取土可在井内布置小型挖掘机、人工配合作业；沉井刃脚底布置三排旋喷止沉桩，顶管预留洞口布置双排旋喷加固桩，井内泄水孔辅助排水，将沉井止沉、预留管道洞口处理工序前置，施工成本低，沉井下沉精度高，工期短。
Pipe-jacking circular open caisson drainage sinking construction method
The invention provides a pipe-jacking circular open caisson drainage sinking construction method which comprises the steps that according to the diameter of an open caisson and the size of a foundation pit, double rows of jet grouting waterproof curtain piles are arranged outside the open caisson foundation pit, and underground water outside the open caisson is separated; three rows of jet grouting sinking stopping piles are arranged at the blade foot bottom of the open caisson, and hollow piles are arranged above the blade foot to prevent the open caisson from sinking excessively; the double rows of jet grouting reinforcing piles are arranged at the reserved hole of the jacking pipe, collapse after the reserved hole is chiseled away is prevented, the sinking height of the open caisson is reduced, and the soil taking efficiency of dry operation is high. A small excavator can be arranged in the well when the height-increasing open caisson sinks and borrows soil, a small excavator can be arranged in the well when the height-increasing open caisson sinks and borrows soil through manual cooperation, and manual cooperation is achieved; three rows of jet grouting sinking stopping piles are arranged at the blade foot bottom of the open caisson, double rows of jet grouting reinforcing piles are arranged at a reserved hole of a jacking pipe, drainage holes in the well assist in drainage, the treatment procedures of sinking stopping of the open caisson and reserved pipeline holes are preposed, the construction cost is low, the sinking precision of the open caisson is high, and the construction period is short.
本发明提供一种顶管圆形沉井排水下沉施工方法，根据沉井直径、基坑尺寸，在沉井基坑外设置双排旋喷止水帷幕桩，隔断沉井外地下水；在沉井刃脚底设置3排旋喷止沉桩，刃脚以上为空桩，防止沉井超沉；在顶管预留洞口设置双排旋喷加固桩，防止预留洞口凿除后坍塌，减少沉井下沉的高度，干作业取土效率高。接高沉井下沉取土可在井内布置小型挖掘机、人工配合作业接高沉井下沉取土可在井内布置小型挖掘机、人工配合作业；沉井刃脚底布置三排旋喷止沉桩，顶管预留洞口布置双排旋喷加固桩，井内泄水孔辅助排水，将沉井止沉、预留管道洞口处理工序前置，施工成本低，沉井下沉精度高，工期短。
Pipe-jacking circular open caisson drainage sinking construction method
顶管圆形沉井排水下沉施工方法
MA RONGZENG (author) / WANG YANG (author) / YE JUNXIONG (author) / LIU SUNYUAN (author) / YANG ZESONG (author) / CHEN YANLIN (author) / LU CHENGXIANG (author) / LI LIHUA (author) / LYU ERYAN (author)
2023-03-07
Patent
Electronic Resource
Chinese
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