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A platform for research: civil engineering, architecture and urbanism
Excavation construction method of subway station open-cut interval foundation pit
The invention discloses an excavation construction method of a subway station open-cut interval foundation pit. The excavation construction method comprises the steps that a top foundation pit section is excavated; a concrete support is constructed in the top foundation pit section; the remaining earthwork to be excavated is divided into more than two operation units, each operation unit is divided into a plurality of layers, each layer of earthwork is excavated from one side to the other side or from two sides to the middle part of each operation unit in a segmented manner, a concrete support is constructed after each section of earthwork is excavated, and the excavation of the next layer of earthwork is started after the concrete support reaches the designed strength; after top-layer earthwork of each operation unit is excavated, remaining earthwork is divided into multiple layers to be excavated, each layer of earthwork is excavated from one side to the other side or excavated from the two sides to the middle at the same time, a concrete support is constructed immediately after each layer of earthwork is excavated, and after the concrete support reaches the designed strength, excavation of the next layer of earthwork is started; and until the excavation of the last layer of earthwork is completed. The method is simple in process, easy to implement, short in construction period, low in cost and high in construction quality and safety.
一种地铁站明挖区间基坑的开挖施工方法，包括开挖顶部基坑段；在顶部基坑段内施工混凝土支撑；将剩余待开挖土方分为两个以上作业单元，各作业单元分为多层，每层土方分段从作业单元从一侧向另一侧开挖或者从两侧向中部开挖，每段土方开挖完成后施作混凝土支撑，混凝土支撑达到设计强度后再开始下一层土方开挖；各作业单元的顶层土方开挖完成后，剩余土方分为多层进行开挖，每层土方从一侧向另一侧开挖或者同时从两侧向中部开挖，每层土方开挖完成后立即施作混凝土支撑，混凝土支撑达到设计强度后再开始下一层土方开挖，直至完成最后一层土方的开挖。其工艺简单、易于实施、工期短、成本低、施工质量和安全性高。
Excavation construction method of subway station open-cut interval foundation pit
The invention discloses an excavation construction method of a subway station open-cut interval foundation pit. The excavation construction method comprises the steps that a top foundation pit section is excavated; a concrete support is constructed in the top foundation pit section; the remaining earthwork to be excavated is divided into more than two operation units, each operation unit is divided into a plurality of layers, each layer of earthwork is excavated from one side to the other side or from two sides to the middle part of each operation unit in a segmented manner, a concrete support is constructed after each section of earthwork is excavated, and the excavation of the next layer of earthwork is started after the concrete support reaches the designed strength; after top-layer earthwork of each operation unit is excavated, remaining earthwork is divided into multiple layers to be excavated, each layer of earthwork is excavated from one side to the other side or excavated from the two sides to the middle at the same time, a concrete support is constructed immediately after each layer of earthwork is excavated, and after the concrete support reaches the designed strength, excavation of the next layer of earthwork is started; and until the excavation of the last layer of earthwork is completed. The method is simple in process, easy to implement, short in construction period, low in cost and high in construction quality and safety.
一种地铁站明挖区间基坑的开挖施工方法，包括开挖顶部基坑段；在顶部基坑段内施工混凝土支撑；将剩余待开挖土方分为两个以上作业单元，各作业单元分为多层，每层土方分段从作业单元从一侧向另一侧开挖或者从两侧向中部开挖，每段土方开挖完成后施作混凝土支撑，混凝土支撑达到设计强度后再开始下一层土方开挖；各作业单元的顶层土方开挖完成后，剩余土方分为多层进行开挖，每层土方从一侧向另一侧开挖或者同时从两侧向中部开挖，每层土方开挖完成后立即施作混凝土支撑，混凝土支撑达到设计强度后再开始下一层土方开挖，直至完成最后一层土方的开挖。其工艺简单、易于实施、工期短、成本低、施工质量和安全性高。
Excavation construction method of subway station open-cut interval foundation pit
一种地铁站明挖区间基坑的开挖施工方法
ZHOU YUEWEI (author) / MO CHENG (author) / ZHOU HAO (author) / HUANG YI (author) / YANG FEI (author)
2021-04-23
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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