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A platform for research: civil engineering, architecture and urbanism
Rapid excavation and support construction method for pipe-jacking comprehensive well in complex stratum
The invention belongs to the technical field of municipal engineering, and relates to a rapid excavation and support construction method for a pipe-jacking comprehensive well in a complex stratum. The rapid excavation and support construction method is mainly suitable for construction of the comprehensive well and similar comprehensive well engineering under the complex stratum condition, D1000@1200 mm cast-in-situ bored piles and D600@1200 mm jet grouting piles are mainly adopted as a foundation pit support and a waterproof curtain, gaps between the piles are reduced, the precipitation pressure is reduced, and the situation that water bursts to carry sand due to the fact that the precipitation effect is not ideal is prevented. After construction of an enclosure structure is completed, layered excavation is carried out from top to bottom, net hanging and spraying protection reinforcement between the piles are carried out, a foundation pit inner supporting system is completed from top to bottom till excavation is carried out to the bottom elevation of the foundation pit, finally, a main body engineering reinforced concrete structure is completed from bottom to top, foundation pit inner supports are sequentially dismantled layer by layer from bottom to top after the strength meets the requirement, and finally, the construction of the comprehensive well main body building is completed.
本发明专利属于市政工程技术领域，涉及一种复杂地层顶管综合井快速开挖支护施工方法。本发明施工方法主要适用于复杂地层条件下的综合井及类似综合井工程的施工，本方法主要采用D1000@1200mm钻孔灌注桩+D600@1200mm旋喷桩作为基坑围护及止水帷幕，减少桩间空隙，降低降水压力，防止降水效果不理想造成涌水带沙。在围护结构施工完成后，自上而下分层开挖，桩间挂网喷护补强，自上而下完成基坑内支撑系统后直至开挖至基坑底高程，最后自下而上完成主体工程钢筋混凝土结构，在强度满足要求后再自下而上依次逐层拆除基坑内支撑，最后完成综合井主体建筑建构。
Rapid excavation and support construction method for pipe-jacking comprehensive well in complex stratum
The invention belongs to the technical field of municipal engineering, and relates to a rapid excavation and support construction method for a pipe-jacking comprehensive well in a complex stratum. The rapid excavation and support construction method is mainly suitable for construction of the comprehensive well and similar comprehensive well engineering under the complex stratum condition, D1000@1200 mm cast-in-situ bored piles and D600@1200 mm jet grouting piles are mainly adopted as a foundation pit support and a waterproof curtain, gaps between the piles are reduced, the precipitation pressure is reduced, and the situation that water bursts to carry sand due to the fact that the precipitation effect is not ideal is prevented. After construction of an enclosure structure is completed, layered excavation is carried out from top to bottom, net hanging and spraying protection reinforcement between the piles are carried out, a foundation pit inner supporting system is completed from top to bottom till excavation is carried out to the bottom elevation of the foundation pit, finally, a main body engineering reinforced concrete structure is completed from bottom to top, foundation pit inner supports are sequentially dismantled layer by layer from bottom to top after the strength meets the requirement, and finally, the construction of the comprehensive well main body building is completed.
本发明专利属于市政工程技术领域，涉及一种复杂地层顶管综合井快速开挖支护施工方法。本发明施工方法主要适用于复杂地层条件下的综合井及类似综合井工程的施工，本方法主要采用D1000@1200mm钻孔灌注桩+D600@1200mm旋喷桩作为基坑围护及止水帷幕，减少桩间空隙，降低降水压力，防止降水效果不理想造成涌水带沙。在围护结构施工完成后，自上而下分层开挖，桩间挂网喷护补强，自上而下完成基坑内支撑系统后直至开挖至基坑底高程，最后自下而上完成主体工程钢筋混凝土结构，在强度满足要求后再自下而上依次逐层拆除基坑内支撑，最后完成综合井主体建筑建构。
Rapid excavation and support construction method for pipe-jacking comprehensive well in complex stratum
一种复杂地层顶管综合井快速开挖支护施工方法
SHI HONGWEI (author) / XIAO LIANG (author) / FAN XINGLI (author) / LI YUNLEI (author) / LU HUILIN (author) / CAO HUHU (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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