Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lassen steel sheet pile cofferdam construction method
The invention relates to the technical field of cofferdam construction, and discloses a Larsen steel sheet pile cofferdam construction method which comprises the steps of field investigation, island building cofferdam filling, survey lofting, lead hole rotary drilling, lead hole replacement filling, steel sheet pile sinking, grouting, foundation pit excavation and drainage, waist beam and inner support installation, construction monitoring, main body structure construction and cofferdam dismantling. When water stop cofferdam construction is conducted under the bed rock earthing condition with the high underground water level, firstly, island building cofferdam construction is conducted, a rotary drilling rig is selected according to the model and specification of Larsen steel sheet piles, and it is guaranteed that the Larsen steel sheet piles enter the bed rock through rotary drilling guide holes; basic constraints are established for temporary stability of the steel sheet pile by taking the penetration of the Larsen steel sheet pile into the bedrock and the backfilling of sandy soil in the rock-entering range as elements; then, a seepage path is prolonged through bottom grouting, and a good water stopping effect is achieved; and finally, according to the excavation depth of the foundation pit, a waist beam and an inner support are arranged while excavation is conducted, water collection and pumping drainage are conducted after excavation is conducted to the bottom, and a good operation environment is provided for main structure construction.
本发明涉及围堰施工技术领域，公开了一种拉森钢板桩围堰施工工法，包括：现场调查、筑岛围堰填筑、测量放样、旋挖钻引孔、引孔换填、钢板桩施沉、注浆、基坑开挖排水、腰梁及内撑安装、施工监测、主体结构施工和围堰拆除。本发明在地下水位较高的基岩覆土条件下进行止水围堰施工时，首先筑岛围堰施工，结合拉森钢板桩型号规格等选用旋挖钻机，通过旋挖引孔保证拉森钢板桩进入基岩；以拉森钢板桩贯入基岩和入岩范围内的砂性土回填为要素，为钢板桩的临时稳定建立基本约束；然后通过底部注浆延长渗流路径，起到良好的止水效果；最后根据基坑开挖深度，边挖边设置腰梁及内撑，开挖至底后集水抽排，为主体结构施工提供良好作业环境。
Lassen steel sheet pile cofferdam construction method
The invention relates to the technical field of cofferdam construction, and discloses a Larsen steel sheet pile cofferdam construction method which comprises the steps of field investigation, island building cofferdam filling, survey lofting, lead hole rotary drilling, lead hole replacement filling, steel sheet pile sinking, grouting, foundation pit excavation and drainage, waist beam and inner support installation, construction monitoring, main body structure construction and cofferdam dismantling. When water stop cofferdam construction is conducted under the bed rock earthing condition with the high underground water level, firstly, island building cofferdam construction is conducted, a rotary drilling rig is selected according to the model and specification of Larsen steel sheet piles, and it is guaranteed that the Larsen steel sheet piles enter the bed rock through rotary drilling guide holes; basic constraints are established for temporary stability of the steel sheet pile by taking the penetration of the Larsen steel sheet pile into the bedrock and the backfilling of sandy soil in the rock-entering range as elements; then, a seepage path is prolonged through bottom grouting, and a good water stopping effect is achieved; and finally, according to the excavation depth of the foundation pit, a waist beam and an inner support are arranged while excavation is conducted, water collection and pumping drainage are conducted after excavation is conducted to the bottom, and a good operation environment is provided for main structure construction.
本发明涉及围堰施工技术领域，公开了一种拉森钢板桩围堰施工工法，包括：现场调查、筑岛围堰填筑、测量放样、旋挖钻引孔、引孔换填、钢板桩施沉、注浆、基坑开挖排水、腰梁及内撑安装、施工监测、主体结构施工和围堰拆除。本发明在地下水位较高的基岩覆土条件下进行止水围堰施工时，首先筑岛围堰施工，结合拉森钢板桩型号规格等选用旋挖钻机，通过旋挖引孔保证拉森钢板桩进入基岩；以拉森钢板桩贯入基岩和入岩范围内的砂性土回填为要素，为钢板桩的临时稳定建立基本约束；然后通过底部注浆延长渗流路径，起到良好的止水效果；最后根据基坑开挖深度，边挖边设置腰梁及内撑，开挖至底后集水抽排，为主体结构施工提供良好作业环境。
Lassen steel sheet pile cofferdam construction method
一种拉森钢板桩围堰施工工法
22.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
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