大跨度双向悬索钢屋架结构预应力反张法施工方法与工艺优化

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-14 DOI:10.1155/2024/1668290

Wang Yao, Zhang Hao, Zhang Feng, Li Yang, Li Dong, Bao Min

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引用次数: 0

摘要

针对中小型钢结构体育场馆，为尽量减少施工过程对结构状态的影响，充分利用钢结构固有的弹性变形范围，提出了适合中小型体育场馆的预应力施工工艺。该工艺的主要步骤是先进行主桁架施工。主桁架施工完成后，利用钢缆将其降低到其弹性范围内的某个位置。然后将屋顶格栅连接到主桁架上。所有连接完成后，逐渐释放缆索张力。缆索张力释放后，主桁架会出现一定程度的回弹。在回弹过程中，屋顶网格形成预应力结构，确保主桁架和屋顶之间的稳定性和完整性。通过数值模拟，对该施工过程进行了工艺分析，并提出了最优施工方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Construction Method and Process Optimization of Prestress Reverse Tensioning for Large-Span Bidirectional Suspension Steel Roof Structures

For medium and small-scale steel structure stadiums, in order to minimize the impact of the construction process on the structural state, a prestressing construction process tailored to medium and small stadiums is proposed, taking full advantage of the inherent elastic deformation range of steel structures. The main steps of the process involve the construction of the main truss first. After the main truss construction is completed, it is lowered to a certain position within its elastic range using cables. The roof grid is then connected to the main truss. Once all connections are completed, the cable tension is gradually released. After the cable tension is released, the main truss exhibits a certain degree of rebound. During the rebound process, the roof grid forms a prestressed structure, ensuring stability and integrity between the main truss and the roof. Through numerical simulation, process analysis is conducted on this construction process, and the optimal construction scheme is proposed.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.