复杂海况可回收分块底板钢吊箱围堰施工技术

作者:李习春
单位:中交一公局厦门工程有限公司
摘要:鉴于国内波浪大的复杂海况下高桩承台钢吊箱施工方法工效较低,钢吊箱底板无法回收,结合长平高速公路CPA3项目松下跨海特大桥海中高桩承台施工情况,提出了可完全回收的分块企口拼装型钢底板钢吊箱围堰施工技术,可实现底板钢结构全部回收周转使用,安拆便捷,且刚度大能抵抗波浪的冲击作用,安全可靠,节约大量施工成本、缩短工期。重点介绍了可回收分块底板钢吊箱的工作原理、关键技术和功能特点,并对其在各施工工况下的受力状况进行数值分析,结果表明其能满足施工要求。
关键词:桥梁工程承台围堰钢吊箱施工技术
作者简介:李习春,高级工程师,E-mail:630691151@qq.com。
基金: -页码-:120-123
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Construction Technology of Steel Box Cofferdam with Recyclable Block Bottom in Complex Sea Condition
LI Xichun
(China Communications Construction First Highway Xiamen Engineering Co., Ltd.)
Abstract: In view of the low working efficiency of domestic construction method of high-rise pile cap and unrecyclable steel box bottom under complex sea conditions with huge waves and in combination with sea high-rise pile cap construction of Songxia Cross-sea Bridge of Changping Highway CPA3 Project, a cofferdam construction technology of the partitioned tongue-and-groove assembled steel plate is put forward, which can not only realize the recyclability of all plate steel structure, convenient installation and removal, great stiffness to resist wave impact, but also is safe and reliable and can save a large amount of construction cost, shorten the construction period. The working principle, key technology and functional characteristics of the recyclable block bottom steel hoisting box were introduced in particular and their states of stress under various construction conditions were numerically analyzed and were found to be able to meet the construction requirements.
Keywords: bridges; pile cap; cofferdam; steel hanging box; construction
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