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A platform for research: civil engineering, architecture and urbanism
Large-area deep foundation pit supporting system and construction method
According to the large-area deep foundation pit supporting system and the construction method, a three-axis cement-soil mixing pile waterproof curtain is adopted for supporting parts around a foundation pit for water stopping, cement mixing piles are adopted for PRC construction method pile sections for forming a closed waterproof curtain for water stopping, the upper ends of the supporting parts around the foundation pit are connected with a top beam, and reinforcing piers are arranged at certain intervals; the reinforcing pier is connected with a steel lattice inclined strut, and the inclined strut is inserted into a foundation pit soil body by forming a 45-degree angle with a reference surface; according to the supporting structure, the PRC pipe piles are inserted into the three-shaft mixing piles, the angle braces, the steel lattice inclined struts and the local inclined struts are reinforced and combined to form a supporting system, the safety requirement of a large-area deep foundation pit can be met, site construction steps are greatly simplified, and therefore the construction period is shortened; and a large number of building materials and manpower input are reduced, and the construction cost is greatly reduced.
本发明提供了一种大面积深基坑支护体系及施工方法，基坑四周支护部位采用三轴水泥土搅拌桩止水帷幕止水，PRC工法桩段采用水泥搅拌桩形成封闭的止水帷幕止水，基坑四周支护部位上端连接冠梁，相隔一定间距设置加强墩，加强墩连接钢格构斜撑，斜撑与基准面呈45度角插入基坑土体内；本发明的支护结构由三轴搅拌桩内插PRC管桩、角撑、钢格构斜撑、局部斜撑加固组合形成支护体系，不仅可满足大面积深基坑安全要求，并且大幅度简化现场施工步骤，从而缩短工期，另外相比于传统的钢筋混凝土对撑，减少了大量的建筑材料和人工的投入，极大地降低施工成本。
Large-area deep foundation pit supporting system and construction method
According to the large-area deep foundation pit supporting system and the construction method, a three-axis cement-soil mixing pile waterproof curtain is adopted for supporting parts around a foundation pit for water stopping, cement mixing piles are adopted for PRC construction method pile sections for forming a closed waterproof curtain for water stopping, the upper ends of the supporting parts around the foundation pit are connected with a top beam, and reinforcing piers are arranged at certain intervals; the reinforcing pier is connected with a steel lattice inclined strut, and the inclined strut is inserted into a foundation pit soil body by forming a 45-degree angle with a reference surface; according to the supporting structure, the PRC pipe piles are inserted into the three-shaft mixing piles, the angle braces, the steel lattice inclined struts and the local inclined struts are reinforced and combined to form a supporting system, the safety requirement of a large-area deep foundation pit can be met, site construction steps are greatly simplified, and therefore the construction period is shortened; and a large number of building materials and manpower input are reduced, and the construction cost is greatly reduced.
本发明提供了一种大面积深基坑支护体系及施工方法，基坑四周支护部位采用三轴水泥土搅拌桩止水帷幕止水，PRC工法桩段采用水泥搅拌桩形成封闭的止水帷幕止水，基坑四周支护部位上端连接冠梁，相隔一定间距设置加强墩，加强墩连接钢格构斜撑，斜撑与基准面呈45度角插入基坑土体内；本发明的支护结构由三轴搅拌桩内插PRC管桩、角撑、钢格构斜撑、局部斜撑加固组合形成支护体系，不仅可满足大面积深基坑安全要求，并且大幅度简化现场施工步骤，从而缩短工期，另外相比于传统的钢筋混凝土对撑，减少了大量的建筑材料和人工的投入，极大地降低施工成本。
Large-area deep foundation pit supporting system and construction method
一种大面积深基坑支护体系及施工方法
YAO HONGYU (author) / RU RUICHUN (author) / DI YANGYANG (author) / ZHANG ZHAOQIAN (author) / TANG TIANYU (author) / GAO FEI (author) / CAO YUANYUAN (author) / HAN YI (author)
2024-07-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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