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A platform for research: civil engineering, architecture and urbanism
Construction technology of variable-height steel box girder floating and dragging method
The invention provides a construction technology of a variable-height steel box girder floating support dragging method. The construction technology comprises the following steps that a lower-layer steel box girder, rails and guide beams are installed, dragging systems are installed on the two rails respectively, temporary supports between an upper-layer steel box girder and the rails are replaced with sliding shoes, floating supports are installed, and a floating boat and a plurality of supports are adopted; the upper-layer steel box girder is dragged, the upper-layer steel box girder is moved to a preset position through a dragging system, and at the moment, the front end of a girder body of the upper-layer steel box girder is in a cantilever state; the pontoon sinks after being filled with water, is fixed after being moved to a preset position below the upper-layer steel box girder, and is drained and jacked; when the steel box girder reaches the position above the girder falling point, the floating support sinks after being injected with water, and the floating pontoon is separated from the girder bottom of the upper-layer steel box girder; and the upper-layer steel box girder and the lower-layer steel box girder are combined, and construction is finished. The floating support is used as a movable support, so that the problems that a bracket needs to be erected and the construction period is long in an in-situ hoisting method are solved; and by controlling the synchronism in the implementation process, the problem that a wide pontoon needs to be utilized in a floating method is solved.
本发明提供了变高度钢箱梁浮托拖拉法施工技术，包括以下步骤：安装下层钢箱梁、轨道及导梁，分别在两条轨道上安装好拖拉系统，将上层钢箱梁与轨道间的临时支撑换为滑靴，安装浮托，采用浮船及若干支架构成；拖拉上层钢箱梁，采用拖拉系统将上层钢箱梁移动至预设位置，此时上层钢箱梁的梁体前端为悬臂状态；浮船加水下沉，移动至上层钢箱梁的下方的预定位置后固定，排水顶升；当钢箱梁到达落梁点上方，浮托注水下沉，浮船开离上层钢箱梁的梁底；落梁合并上层钢箱梁和下层钢箱梁，施工结束。通过浮托作为移动支撑，解决了原位吊装法需要搭设支架、施工周期长的问题；通过实施过程中对同步性的控制，解决了浮托法需要利用宽浮船的问题。
Construction technology of variable-height steel box girder floating and dragging method
The invention provides a construction technology of a variable-height steel box girder floating support dragging method. The construction technology comprises the following steps that a lower-layer steel box girder, rails and guide beams are installed, dragging systems are installed on the two rails respectively, temporary supports between an upper-layer steel box girder and the rails are replaced with sliding shoes, floating supports are installed, and a floating boat and a plurality of supports are adopted; the upper-layer steel box girder is dragged, the upper-layer steel box girder is moved to a preset position through a dragging system, and at the moment, the front end of a girder body of the upper-layer steel box girder is in a cantilever state; the pontoon sinks after being filled with water, is fixed after being moved to a preset position below the upper-layer steel box girder, and is drained and jacked; when the steel box girder reaches the position above the girder falling point, the floating support sinks after being injected with water, and the floating pontoon is separated from the girder bottom of the upper-layer steel box girder; and the upper-layer steel box girder and the lower-layer steel box girder are combined, and construction is finished. The floating support is used as a movable support, so that the problems that a bracket needs to be erected and the construction period is long in an in-situ hoisting method are solved; and by controlling the synchronism in the implementation process, the problem that a wide pontoon needs to be utilized in a floating method is solved.
本发明提供了变高度钢箱梁浮托拖拉法施工技术，包括以下步骤：安装下层钢箱梁、轨道及导梁，分别在两条轨道上安装好拖拉系统，将上层钢箱梁与轨道间的临时支撑换为滑靴，安装浮托，采用浮船及若干支架构成；拖拉上层钢箱梁，采用拖拉系统将上层钢箱梁移动至预设位置，此时上层钢箱梁的梁体前端为悬臂状态；浮船加水下沉，移动至上层钢箱梁的下方的预定位置后固定，排水顶升；当钢箱梁到达落梁点上方，浮托注水下沉，浮船开离上层钢箱梁的梁底；落梁合并上层钢箱梁和下层钢箱梁，施工结束。通过浮托作为移动支撑，解决了原位吊装法需要搭设支架、施工周期长的问题；通过实施过程中对同步性的控制，解决了浮托法需要利用宽浮船的问题。
Construction technology of variable-height steel box girder floating and dragging method
变高度钢箱梁浮托拖拉法施工技术
CHEN XIAOCHENG (author) / HU SHANGYONG (author) / HUANG YONGLIANG (author) / YANG YANG (author) / GE LIANYUN (author) / QIN WEIXING (author) / GAO SHUAI (author) / WANG XIN (author) / DAI YUHAO (author)
2023-11-24
Patent
Electronic Resource
Chinese
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