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A platform for research: civil engineering, architecture and urbanism
Construction method of pier bearing platform steel sheet pile cofferdam
The invention discloses a construction method of a pier bearing platform steel sheet pile cofferdam. The construction method comprises the following steps that 1, construction of a drilled pile is completed, and a riverbed is leveled; brackets are welded to a steel casing; steel sheet piles are inserted and driven to be closed; a truss structure is formed; 2, a hanging system is installed on the steel casing, the brackets are cut off, and the hanging system lowers a bottom layer inner support and a middle layer inner support; 3, original brackets are welded to the steel casing again; a top layer inner support is installed; 4, the riverbed is cleaned; 5, a bottom sealing platform is erected on the steel casing, and underwater bottom sealing pouring is carried out; and 6, after the strength of bottom sealing concrete meets the requirement, water in the cofferdam is pumped out, the steel casing is cut off, a leveling layer is constructed, the steel casing is cut off, and construction of pile head breaking and bearing platform construction is carried out. The construction method has the beneficial effects that the Larsen steel sheet pile cofferdam is adopted for supporting, the construction period can be effectively shortened, and risks are reduced.
本发明公开了一种墩承台钢板桩围堰的施工方法，该施工方法包括以下步骤：步骤一、完成钻孔桩施工，河床整平；在钢护筒上焊接牛腿；插打钢板桩至合龙；形成桁架结构；步骤二、在钢护筒上安装吊挂系统，割除牛腿，吊挂系统将底层内支撑、中层内支撑下放；步骤三、在钢护筒重新焊接原牛腿；安装顶层内支撑；步骤四：清理河床；步骤五：在钢护筒上搭设封底平台，水下封底浇筑；步骤六：待封底混凝土强度达到要求后，将围堰内的水抽干，割除钢护筒；施工找平层，割除钢护筒、进行破桩头、承台的施工。本发明的有益效果有：采用拉森钢板桩围堰支护，能有效缩短施工工期，降低风险。
Construction method of pier bearing platform steel sheet pile cofferdam
The invention discloses a construction method of a pier bearing platform steel sheet pile cofferdam. The construction method comprises the following steps that 1, construction of a drilled pile is completed, and a riverbed is leveled; brackets are welded to a steel casing; steel sheet piles are inserted and driven to be closed; a truss structure is formed; 2, a hanging system is installed on the steel casing, the brackets are cut off, and the hanging system lowers a bottom layer inner support and a middle layer inner support; 3, original brackets are welded to the steel casing again; a top layer inner support is installed; 4, the riverbed is cleaned; 5, a bottom sealing platform is erected on the steel casing, and underwater bottom sealing pouring is carried out; and 6, after the strength of bottom sealing concrete meets the requirement, water in the cofferdam is pumped out, the steel casing is cut off, a leveling layer is constructed, the steel casing is cut off, and construction of pile head breaking and bearing platform construction is carried out. The construction method has the beneficial effects that the Larsen steel sheet pile cofferdam is adopted for supporting, the construction period can be effectively shortened, and risks are reduced.
本发明公开了一种墩承台钢板桩围堰的施工方法，该施工方法包括以下步骤：步骤一、完成钻孔桩施工，河床整平；在钢护筒上焊接牛腿；插打钢板桩至合龙；形成桁架结构；步骤二、在钢护筒上安装吊挂系统，割除牛腿，吊挂系统将底层内支撑、中层内支撑下放；步骤三、在钢护筒重新焊接原牛腿；安装顶层内支撑；步骤四：清理河床；步骤五：在钢护筒上搭设封底平台，水下封底浇筑；步骤六：待封底混凝土强度达到要求后，将围堰内的水抽干，割除钢护筒；施工找平层，割除钢护筒、进行破桩头、承台的施工。本发明的有益效果有：采用拉森钢板桩围堰支护，能有效缩短施工工期，降低风险。
Construction method of pier bearing platform steel sheet pile cofferdam
一种墩承台钢板桩围堰的施工方法
ZHOU JIANG (author) / CHU BING (author) / WAN GUOPING (author) / HUANG ZIYANG (author) / XU YONGQIU (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Rectangular steel sheet pile cofferdam structure of bearing platform
| European Patent Office | 2024