下横梁支架系统创新设计与施工
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作者:
作者单位:

1.保利长大工程有限公司;2.广东省建设有限公司

作者简介:

通讯作者:

中图分类号:

U445.47

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)


Innovative Design and Construction of Support System for Lower Crossbeam
Author:
Affiliation:

1.Poly ChangDa Engineering Co Ltd Guangzhou China;2.Guangdong Highway Construction Co Ltd

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    深中通道伶仃洋大桥是主跨为1666m的世界最大跨径全离岸海中悬索桥,为解决索塔下横梁体量巨大的施工难题,创新性的提出钻孔灌注桩支架系统的下横梁施工方案。文章详细介绍了该方案的设计体系;采用大型通用有限元软件Abaqus进行了详细的结构受力分析,得出分层浇筑混凝土结构,上层混凝土荷载在下层混凝土与支架中的分配比率,并验证了结构安全性。应用表明:采用钻孔灌注桩支架系统施工大体量下横梁,安全性较高,经济效果明显,可供其他类似工程参考借鉴。

    Abstract:

    The Lingdingyang Bridge in the Shenzhen-to-Zhongshan link is the world's largest full offshore suspension bridge with a main span of 1666m. In order to solve the construction problem of huge quantity of the lower crossbeam, the construction scheme of the bored pile support system is innovatively put forward, the design of which is detailly introduced in the article. The large-scale general finite element software is used to analyze the force of the bored pile support system. By the analysis, the distribution ratio of the upper concrete load between the lower concrete and the support system in the layered concrete structure is drawn up, and the safety of the structure is verified. The application shows that the use of bored pile support system to construct the lower crossbeam with huge quantity has high safety and obvious economic effects, which can be used as a reference for other similar projects.

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引用本文

董春光,王晓佳,罗吉庆,等. 下横梁支架系统创新设计与施工[J]. 科学技术与工程, , ():

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历史
  • 收稿日期:2021-05-31
  • 最后修改日期:2022-05-04
  • 录用日期:2022-05-07
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