Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improved double-side-wall pilot tunnel construction method for urban super-large-section shallow-buried station
The invention discloses an improved double-side-wall pilot tunnel construction method for an urban super-large-section shallow-buried station, which divides a double-side-wall pilot tunnel to be excavated into an upper step, a middle step and a lower step, and comprises the following steps: step A, excavating left and right pilot tunnels of the upper step, and then constructing a main body structure support I and a temporary support; b, upper step core soil is excavated, and then a second main body structure support is built; c, a middle step is excavated; middle step core soil right facing the upper step core soil is excavated to form a pull groove, and then a middle step left pilot tunnel and a middle step right pilot tunnel are excavated in sequence; d, a lower step is excavated; lower step core soil located under the middle step core soil is excavated, and a lower step left pilot tunnel and a lower step right pilot tunnel continue to be excavated in sequence; and E, inverted arch construction is conducted, excavation and propelling continue to be conducted in the front-back direction of the pilot tunnel, and the method has the advantages of being safe, reliable, easy to operate and implement, good in construction quality, fast in construction progress and capable of reducing the engineering cost and the construction cost.
本发明公开了一种城市超大断面浅埋车站的改进型双侧壁导洞施工方法，将待开挖双侧壁导洞分成上台阶、中台阶和下台阶，包括以下步骤：步骤A、开挖上台阶左右导洞，然后施作主体结构支护一和临时支护；步骤B、开挖上台阶核心土，然后建设主体结构支护二；步骤C、开挖中台阶；先开挖正对上台阶核心土的中台阶核心土形成拉槽，然后先后开挖中台阶左导洞和中台阶右导洞；步骤D、开挖下台阶；开挖位于中台阶核心土正下方的下台阶核心土，继续先后开挖下台阶左导洞和下台阶右导洞；步骤E、进行仰拱施工，继续沿导洞前后方向开挖推进，具有安全可靠、易于操作实施、施工质量好、施工进度快、降低工程造价、减少施工成本的特点。
Improved double-side-wall pilot tunnel construction method for urban super-large-section shallow-buried station
The invention discloses an improved double-side-wall pilot tunnel construction method for an urban super-large-section shallow-buried station, which divides a double-side-wall pilot tunnel to be excavated into an upper step, a middle step and a lower step, and comprises the following steps: step A, excavating left and right pilot tunnels of the upper step, and then constructing a main body structure support I and a temporary support; b, upper step core soil is excavated, and then a second main body structure support is built; c, a middle step is excavated; middle step core soil right facing the upper step core soil is excavated to form a pull groove, and then a middle step left pilot tunnel and a middle step right pilot tunnel are excavated in sequence; d, a lower step is excavated; lower step core soil located under the middle step core soil is excavated, and a lower step left pilot tunnel and a lower step right pilot tunnel continue to be excavated in sequence; and E, inverted arch construction is conducted, excavation and propelling continue to be conducted in the front-back direction of the pilot tunnel, and the method has the advantages of being safe, reliable, easy to operate and implement, good in construction quality, fast in construction progress and capable of reducing the engineering cost and the construction cost.
本发明公开了一种城市超大断面浅埋车站的改进型双侧壁导洞施工方法，将待开挖双侧壁导洞分成上台阶、中台阶和下台阶，包括以下步骤：步骤A、开挖上台阶左右导洞，然后施作主体结构支护一和临时支护；步骤B、开挖上台阶核心土，然后建设主体结构支护二；步骤C、开挖中台阶；先开挖正对上台阶核心土的中台阶核心土形成拉槽，然后先后开挖中台阶左导洞和中台阶右导洞；步骤D、开挖下台阶；开挖位于中台阶核心土正下方的下台阶核心土，继续先后开挖下台阶左导洞和下台阶右导洞；步骤E、进行仰拱施工，继续沿导洞前后方向开挖推进，具有安全可靠、易于操作实施、施工质量好、施工进度快、降低工程造价、减少施工成本的特点。
Improved double-side-wall pilot tunnel construction method for urban super-large-section shallow-buried station
城市超大断面浅埋车站的改进型双侧壁导洞施工方法
XIAO MINGHUA (Autor:in) / HU QIFAN (Autor:in) / GUO YANJUN (Autor:in) / HU SHIQUAN (Autor:in) / LIU MINGHUI (Autor:in) / REN PENG (Autor:in) / WANG LEI (Autor:in) / MA YANFEI (Autor:in) / CHEN CHENG (Autor:in) / PENG ZHENGUI (Autor:in)
10.06.2022
Patent
Elektronische Ressource
Chinesisch
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