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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 following steps that fender posts of the foundation pit are constructed, and a top foundation pit section is excavated; the interior of the top foundation pit section is constructed to form a concrete support connected with the fender posts; the remaining earthwork to be excavated is divided into multiple layers from top to bottom to be excavated, each layer of earthwork is divided into multiple sections in the direction from one side of the foundation pit to the other side of the foundation pit to be excavated section by section, after each section of earthwork is excavated, concrete supports connected with fender posts are constructed immediately, after the concrete support corresponding to each section reaches the design strength, earth excavation of the next layer of the layer where the section is located is started; and after the top-layer earthwork is excavated to the position of the pit wall of the preset foundation pit, the rest layers of earthwork are integrally excavated to form a back-pressure soil body. The excavation construction method has the advantages of being simple in process, easy to implement, short in construction period, low in cost, high in construction quality and safety and the like.
本发明公开了一种地铁站明挖区间基坑的开挖施工方法，包括以下步骤施工完成基坑的围护桩，开挖出顶部基坑段；在顶部基坑段内施工形成与围护桩连接的混凝土支撑；将剩余待开挖土方由上至下分为多层进行开挖，每层土方沿基坑一侧向另一侧方向分为多段进行逐段开挖，每段土方开挖完成后立即施作与围护桩连接的混凝土支撑，每段所对应的混凝土支撑达到设计强度后再开始该段所在层的下一层土方开挖；当顶层土方开挖至预设基坑坑壁的位置后，将其余各层土方整体开挖形成反压土体的步骤。该开挖施工方法具有工艺简单、易于实施、工期短、成本低、施工质量和安全性高等优点。
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 following steps that fender posts of the foundation pit are constructed, and a top foundation pit section is excavated; the interior of the top foundation pit section is constructed to form a concrete support connected with the fender posts; the remaining earthwork to be excavated is divided into multiple layers from top to bottom to be excavated, each layer of earthwork is divided into multiple sections in the direction from one side of the foundation pit to the other side of the foundation pit to be excavated section by section, after each section of earthwork is excavated, concrete supports connected with fender posts are constructed immediately, after the concrete support corresponding to each section reaches the design strength, earth excavation of the next layer of the layer where the section is located is started; and after the top-layer earthwork is excavated to the position of the pit wall of the preset foundation pit, the rest layers of earthwork are integrally excavated to form a back-pressure soil body. The excavation construction method has the advantages of being simple in process, easy to implement, short in construction period, low in cost, high in construction quality and safety and the like.
本发明公开了一种地铁站明挖区间基坑的开挖施工方法，包括以下步骤施工完成基坑的围护桩，开挖出顶部基坑段；在顶部基坑段内施工形成与围护桩连接的混凝土支撑；将剩余待开挖土方由上至下分为多层进行开挖，每层土方沿基坑一侧向另一侧方向分为多段进行逐段开挖，每段土方开挖完成后立即施作与围护桩连接的混凝土支撑，每段所对应的混凝土支撑达到设计强度后再开始该段所在层的下一层土方开挖；当顶层土方开挖至预设基坑坑壁的位置后，将其余各层土方整体开挖形成反压土体的步骤。该开挖施工方法具有工艺简单、易于实施、工期短、成本低、施工质量和安全性高等优点。
Excavation construction method of subway station open-cut interval foundation pit
地铁站明挖区间基坑的开挖施工方法
YANG FEI (author) / ZHOU HAO (author) / PAN CHUTIAN (author) / MIN JIAN (author) / WU HAO (author)
2021-04-23
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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