Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
River bank cofferdam structure dismantling construction method
The invention discloses a river bank cofferdam structure dismantling construction method. The river bank cofferdam structure dismantling construction method comprises the following steps that a foundation pit is filled with water, and a second supporting layer is dismantled; the foundation pit is filled with water till the water level in the foundation pit is flush with the water level outside a plain concrete wall; a cofferdam outer layer and the plain concrete wall are dismantled in a layered mode; a soil layer below the cofferdam outer layer and the remaining plain concrete wall are dismantled to be below the elevation line; a first supporting layer and constructional columns are dismantled; soil and concrete around steel pipe piles are removed, and the steel pipe piles are cut and hoisted out of the foundation pit; and bed sweeping detection is conducted. The foundation pit is filled with water, the internal and external pressure difference of a cofferdam structure is balanced through water, the cofferdam structure is prevented from collapsing in the dismantling process, and safety is improved; and the foundation pit does not need to be filled with earthwork, the geotechnical operation amount can be reduced, accordingly, the total construction amount in the dismantling process can be reduced, the construction cost is reduced, and the construction time can be shortened.
本发明公开了河岸围堰结构拆除施工方法，其包括如下步骤：基坑灌水并将第二支撑层拆除；基坑内灌水直至基坑内的水位与素混凝土墙外的水位持平；围堰外层和素混凝土墙分层拆除；对围堰外层下方的泥土层和剩余素混凝土墙拆除至标高线以下；将第一支撑层和构造柱进行拆除；清除钢管桩周围的泥土和混凝土，切割钢管桩并将其吊出基坑；扫床检测。通过在基坑内灌水，通过水来平衡围堰结构的内外压差，避免围堰结构在拆除过程中发生崩塌，提高安全性；不需要在基坑内填筑土方，能够减少土工作业量，从而可降低拆除过程中的施工总量，降低施工成本，且能够减少施工时间。
River bank cofferdam structure dismantling construction method
The invention discloses a river bank cofferdam structure dismantling construction method. The river bank cofferdam structure dismantling construction method comprises the following steps that a foundation pit is filled with water, and a second supporting layer is dismantled; the foundation pit is filled with water till the water level in the foundation pit is flush with the water level outside a plain concrete wall; a cofferdam outer layer and the plain concrete wall are dismantled in a layered mode; a soil layer below the cofferdam outer layer and the remaining plain concrete wall are dismantled to be below the elevation line; a first supporting layer and constructional columns are dismantled; soil and concrete around steel pipe piles are removed, and the steel pipe piles are cut and hoisted out of the foundation pit; and bed sweeping detection is conducted. The foundation pit is filled with water, the internal and external pressure difference of a cofferdam structure is balanced through water, the cofferdam structure is prevented from collapsing in the dismantling process, and safety is improved; and the foundation pit does not need to be filled with earthwork, the geotechnical operation amount can be reduced, accordingly, the total construction amount in the dismantling process can be reduced, the construction cost is reduced, and the construction time can be shortened.
本发明公开了河岸围堰结构拆除施工方法，其包括如下步骤：基坑灌水并将第二支撑层拆除；基坑内灌水直至基坑内的水位与素混凝土墙外的水位持平；围堰外层和素混凝土墙分层拆除；对围堰外层下方的泥土层和剩余素混凝土墙拆除至标高线以下；将第一支撑层和构造柱进行拆除；清除钢管桩周围的泥土和混凝土，切割钢管桩并将其吊出基坑；扫床检测。通过在基坑内灌水，通过水来平衡围堰结构的内外压差，避免围堰结构在拆除过程中发生崩塌，提高安全性；不需要在基坑内填筑土方，能够减少土工作业量，从而可降低拆除过程中的施工总量，降低施工成本，且能够减少施工时间。
River bank cofferdam structure dismantling construction method
河岸围堰结构拆除施工方法
OU ZHIYONG (Autor:in) / LIAO WEIPING (Autor:in) / WANG XIFENG (Autor:in) / ZHONG YUMING (Autor:in) / LIU YONGCHENG (Autor:in) / YANG LEQUAN (Autor:in) / ZHAO TAOTAO (Autor:in)
13.10.2020
Patent
Elektronische Ressource
Chinesisch
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