Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Excavation and support construction method for shallow-buried long-and-large-connector accessory structure foundation pit of subway station
The invention discloses a subway station shallow-buried long and large connector accessory structure foundation pit excavation supporting construction method. The method comprises the following steps that firstly, accessory fender posts, top beams and retaining walls are constructed; secondly, an accessory structure foundation pit is excavated for the first time, and a main body side crown beam and a retaining wall are cut off; 3, excavating for the second time and cutting the main body fender post to the elevation of the top surface of the main body structure top plate; fourthly, steel bars are anchored into the top plate of the main body structure, and reinforced concrete brackets are constructed; 5, excavating for the third time to the positions of a main body structure top plate and an accessory interface lintel, installing a steel enclosing purlin, and erecting a second steel support; and sixthly, the soil body between the grid-connected spraying support piles is circularly excavated to the designed elevation of the base. The method is simple in step, and the unsafe risk of the stress state of the main body crown beam structure is avoided. And the waterproof quality of the underground structure is improved. And some construction risks are avoided, a safe operation platform does not need to be arranged, a supporting structure does not need to be disassembled and supported repeatedly, a main body top beam vertical stress system does not need to be converted, and the construction cost input is low.
一种地铁车站浅埋长大接口附属结构基坑开挖支护施工方法，包括以下步骤：一、施工附属围护桩、冠梁及挡土墙；二、附属结构基坑第一次开挖，切除主体侧冠梁及挡土墙；三、第二次开挖并切割主体围护桩至主体结构顶板顶面高程；四、在主体结构顶板上锚入钢筋，施工钢筋混凝土牛腿；五、第三次开挖至主体结构顶板与附属接口过梁位置，安装钢围檩，架设第二道钢支撑；六、循环开挖并网喷支护桩间土体至基底设计高程。本发明方法步骤简单，避免了主体冠梁结构受力状态不安全风险。提高了地下结构的防水质量。还避免一些施工风险，不用设置安全作业平台，不用反复拆支支撑结构，不用对主体冠梁竖向受力体系进行转换，施工成本投入少。
Excavation and support construction method for shallow-buried long-and-large-connector accessory structure foundation pit of subway station
The invention discloses a subway station shallow-buried long and large connector accessory structure foundation pit excavation supporting construction method. The method comprises the following steps that firstly, accessory fender posts, top beams and retaining walls are constructed; secondly, an accessory structure foundation pit is excavated for the first time, and a main body side crown beam and a retaining wall are cut off; 3, excavating for the second time and cutting the main body fender post to the elevation of the top surface of the main body structure top plate; fourthly, steel bars are anchored into the top plate of the main body structure, and reinforced concrete brackets are constructed; 5, excavating for the third time to the positions of a main body structure top plate and an accessory interface lintel, installing a steel enclosing purlin, and erecting a second steel support; and sixthly, the soil body between the grid-connected spraying support piles is circularly excavated to the designed elevation of the base. The method is simple in step, and the unsafe risk of the stress state of the main body crown beam structure is avoided. And the waterproof quality of the underground structure is improved. And some construction risks are avoided, a safe operation platform does not need to be arranged, a supporting structure does not need to be disassembled and supported repeatedly, a main body top beam vertical stress system does not need to be converted, and the construction cost input is low.
一种地铁车站浅埋长大接口附属结构基坑开挖支护施工方法，包括以下步骤：一、施工附属围护桩、冠梁及挡土墙；二、附属结构基坑第一次开挖，切除主体侧冠梁及挡土墙；三、第二次开挖并切割主体围护桩至主体结构顶板顶面高程；四、在主体结构顶板上锚入钢筋，施工钢筋混凝土牛腿；五、第三次开挖至主体结构顶板与附属接口过梁位置，安装钢围檩，架设第二道钢支撑；六、循环开挖并网喷支护桩间土体至基底设计高程。本发明方法步骤简单，避免了主体冠梁结构受力状态不安全风险。提高了地下结构的防水质量。还避免一些施工风险，不用设置安全作业平台，不用反复拆支支撑结构，不用对主体冠梁竖向受力体系进行转换，施工成本投入少。
Excavation and support construction method for shallow-buried long-and-large-connector accessory structure foundation pit of subway station
一种地铁车站浅埋长大接口附属结构基坑开挖支护施工方法
CHENG MINJIE (Autor:in) / LI JIANGFENG (Autor:in) / PAN CHANGSHENG (Autor:in) / ZHOU ZHUBIAO (Autor:in) / HOU JIANPING (Autor:in) / YANG LING (Autor:in) / LIU BOSI (Autor:in)
29.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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