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Combined construction method for steel trestle, steel working platform and steel sheet pile cofferdam
The invention provides a combined construction method of a steel trestle, a steel working platform and a steel sheet pile cofferdam. The combined construction method comprises the following steps that S1, firstly, an island is built, an earth and stone working platform is filled, pier construction is conducted through a pile-first and weir-second method, and in other words, main pier drilling pile construction is firstly completed through the island building platform in the dry season; s2, a rotary drilling rig is adopted for drilling holes in the slate foundation for trestle trestle buttress stand columns and steel operation platform stand columns; s3, earth and stone in the cofferdam are excavated, bearing platform concrete is poured, and pier body construction is completed in the dry season as much as possible; s4, the island building platform is excavated before the flood season comes, and a supporting system of the steel trestle, the steel operation platform and the steel sheet pile cofferdam is completed. If factors such as river characteristics, the construction period, the season and the surrounding environment can be combined for comprehensive analysis in the underwater bridge construction period, a feasible underwater pier deep foundation pit cofferdam supporting scheme is reasonably optimized and formulated; the construction difficulty can be reduced, the construction progress can be accelerated, energy conservation and environmental protection are achieved, and meanwhile good economic and social benefits can be obtained.
本发明提出一种钢栈桥、钢作业平台、钢板桩围堰组合施工方法：包括以下步骤：S1、首先筑岛填筑土石作业平台、先桩后堰法进行桥墩施工，即在枯水期利用筑岛平台先完成主墩钻孔桩施工；S2：采用旋挖钻机在板岩地基上钻孔套眼打设钢板桩围堰、钢栈桥支墩立柱、钢作业平台立柱；S3：再挖除围堰内土石方浇筑承台混凝土，尽量在枯水期完成墩身施工；S4：在汛期来临前挖除筑岛平台，完成钢栈桥、钢作业平台和钢板桩围堰的支撑体系，本发明在水中桥梁施工期间如果能够结合河流特点、工期、季节、周边环境等因素综合分析，合理优化和制定切实可行的水中桥墩深基坑围堰支护方案，既可以降低施工难度、加快施工进度，又节能环保，同时可获得较好的经济和社会效益。
Combined construction method for steel trestle, steel working platform and steel sheet pile cofferdam
The invention provides a combined construction method of a steel trestle, a steel working platform and a steel sheet pile cofferdam. The combined construction method comprises the following steps that S1, firstly, an island is built, an earth and stone working platform is filled, pier construction is conducted through a pile-first and weir-second method, and in other words, main pier drilling pile construction is firstly completed through the island building platform in the dry season; s2, a rotary drilling rig is adopted for drilling holes in the slate foundation for trestle trestle buttress stand columns and steel operation platform stand columns; s3, earth and stone in the cofferdam are excavated, bearing platform concrete is poured, and pier body construction is completed in the dry season as much as possible; s4, the island building platform is excavated before the flood season comes, and a supporting system of the steel trestle, the steel operation platform and the steel sheet pile cofferdam is completed. If factors such as river characteristics, the construction period, the season and the surrounding environment can be combined for comprehensive analysis in the underwater bridge construction period, a feasible underwater pier deep foundation pit cofferdam supporting scheme is reasonably optimized and formulated; the construction difficulty can be reduced, the construction progress can be accelerated, energy conservation and environmental protection are achieved, and meanwhile good economic and social benefits can be obtained.
本发明提出一种钢栈桥、钢作业平台、钢板桩围堰组合施工方法：包括以下步骤：S1、首先筑岛填筑土石作业平台、先桩后堰法进行桥墩施工，即在枯水期利用筑岛平台先完成主墩钻孔桩施工；S2：采用旋挖钻机在板岩地基上钻孔套眼打设钢板桩围堰、钢栈桥支墩立柱、钢作业平台立柱；S3：再挖除围堰内土石方浇筑承台混凝土，尽量在枯水期完成墩身施工；S4：在汛期来临前挖除筑岛平台，完成钢栈桥、钢作业平台和钢板桩围堰的支撑体系，本发明在水中桥梁施工期间如果能够结合河流特点、工期、季节、周边环境等因素综合分析，合理优化和制定切实可行的水中桥墩深基坑围堰支护方案，既可以降低施工难度、加快施工进度，又节能环保，同时可获得较好的经济和社会效益。
Combined construction method for steel trestle, steel working platform and steel sheet pile cofferdam
一种钢栈桥、钢作业平台、钢板桩围堰组合施工方法
CHEN YUBO (author) / ZHAO HAIBO (author) / GUO JIANJUN (author) / LIU CHENGHONG (author) / MA LIANG (author) / LI XUELEI (author) / WANG YINGMEI (author)
2023-07-14
Patent
Electronic Resource
Chinese
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