首页|自行式水中管桩移动施工平台设计与应用

自行式水中管桩移动施工平台设计与应用

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顶推法跨越河流临时支墩基础施工时,多采用钢平台或筑岛工艺辅助进行,该方法施工周期长、成本高,对河流通行及泄洪能力影响较大,施工完成后恢复工程量大,不符合环保要求,存在应用局限性.结合学府路东延跨太平河桥梁顶推临时支墩基础施工,提出采用浮箱联拼水上移动施工平台进行水中管桩施工的新技术.采用规范简化分析方法对水上施工浮箱移动平台抗倾覆能力,起吊龙门架强度、稳定性及刚度进行了计算分析,表明符合安全和使用要求.对自行式水中管桩移动施工平台组拼安装技术及依托该平台进行水中管桩基础承载力检测进行了介绍,形成了一套适用于水中管桩施工的新工法,通过工程应用证明该方法具有工期短、安全经济、环保节能等优点,具有推广应用价值.
Design and Application of Self-Propelled Underwater Pipe Pile Mobile Construction Platform
When constructing temporary pier foundations for the bridge across rivers using the pushing method,steel platforms or island building techniques are often used as auxiliary methods.This method has a long construction period,high cost,and a significant impact on river traffic and flood discharge capacity.After construction is completed,the amount of restoration work is large,which does not meet environmental requirements and has application limitations.Based on the construction of temporary support pier foundation for the push of Xuefu Road East Extension Bridge over Taiping River,a new technology of using floating box joint assembly water mobile construction platform for underwater pipe pile construction is proposed.This article adopts a standardized and simplified analysis method to calculate and analyze the anti-overturning capability,lifting gantry strength,stability,and stiffness of the floating box mobile platform for underwater pipe pile construction,indicating that it meets safety and usage requirements.Moreover,it introduces the assembly and installation technology of a self-propelled mobile construction platform for underwater pipe piles,as well as the testing of the bearing capacity of underwater pipe pile foundations based on this platform.A new construction method suitable for underwater pipe pile construction has been developed in this article.Through engineering applications,it has been proven that this method has advantages such as short construction period,safety and economy,environmental protection and energy conservation,and has promotion and application value.

mobile construction platform for underwater pipe pilesfloating box joint assemblyanti-overturning capabilitypipe pile driving

朱建锋

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中铁二十局集团第六工程有限公司 陕西西安 710032

水中管桩移动施工平台 浮箱联拼 抗倾覆能力 管桩插打

中铁二十局集团有限公司科研计划项目

YF2306QL02B

2024

铁道建筑技术
中国铁道建筑总公司

铁道建筑技术

影响因子:0.539
ISSN:1009-4539
年,卷(期):2024.(7)
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