(1 河北省土木工程灾变控制与灾害应急重点实验室, 廊坊 065201; 2 华北科技学院建筑工程学院, 廊坊 065201; 3 中原工学院建筑工程学院, 郑州 450007;4 北京工业大学空间结构研究中心, 北京 100124)

摘要: 斜拉金属薄板空间结构是一种新型的预应力空间结构,将金属薄板以受拉构件的形式应用于结构中,既可充分发挥金属板材的抗拉强度,又可以将受力构件与围护构件合二为一。 以斜拉金属薄板空间结构为背景,提出了 4种适合该结构的施工成形方法。 为了进一步验证施工成形方法的可行性,并确定最优的施工成形方法,对实际工程进行 1:10 的缩尺,采用模型成形试验和有限元软件模拟对比初始态位移变化来确定最优的施工成形方法;再以最优施工成形方法为参照组,对比另外 3 种施工成形方法在结构构件中产生的应力值,对比 3 种方法的优劣。 结果表明:张拉斜索法是最优的施工成形方法,不仅相对于初始态位移变化较小,而且施工便捷。 另外 3 种施工成形方法,若为了控制应力变化,则选择顶升钢柱法;若为了施工便捷,则选择张拉背索法;直接张拉薄板法不推荐使用。

关键词: 斜拉金属薄板; 空间结构; 成形试验; 施工成形方法

中图分类号:TU399 文献标志码:A 文章编号:1002-848X(2022)23-0126-06

DOI:10. 19701 / j. jzjg. LS220183

Forming test research on cable-stayed sheet metal spatial structure

QIN Jie1,2, LIU Cong3, CAO Wei2, WU Jinzhi4, HUI Cun3, JIANG Peihua2

(1 Hebei Key Laboratory of Civil Engineering Catastrophe Control and Disaster Emergency Response, Langfang 065201,China; 2 Architectural Engineering Institute, North China Institute of Science and Technology, Langfang 065201, China;3 Architectural Engineering Institute, Zhongyuan University of Technology, Zhengzhou 450007, China;4 Spatial Structures Research Center, Beijing University of Technology, Beijing 100124, China)

Abstract: The cable-stayed sheet metal spatial structure is a new type of prestressed spatial structure. The application ofsheet metal in the structure in the form of tensile members can not only give full play to the tensile strength of sheet metal,but also combine the stressed members with the enclosure members. Based on the cable-stayed sheet metal spatialstructure, four construction forming methods suitable for the structure were put forward. In order to further verify thefeasibility of the construction forming methods and determine the optimal construction forming method, a scale of 1􀏑10 wasmade for the actual project, and the model forming test and finite element software simulation were used to compare theinitial displacement changes to determine the optimal construction forming method. Then, taking the optimal constructionforming method as the reference group, the stress values of the other three construction forming methods in the structuralmembers were compared, and the advantages and disadvantages of the other three methods were compared. The resultsshow that the tension inclined cable method is the best construction forming method, which not only changes little relative tothe initial displacement, but also is convenient for construction. For the other three construction forming methods, thejacking steel column method is selected to control the stress change. For the convenience of construction, the tension backcable method is selected. The direct tension sheet metal method is not recommended.

Keywords:cable-stayed sheet metal; spatial structure; forming test; construction method

∗河北省重点研发计划(22375410D)。

第一作者:秦杰,博士,教授,主要从事大跨空间结构等方面研究,Email:qjcumt@ 263. net。

[引用本文] 秦杰,刘聪,曹伟,等. 斜拉金属薄板空间结构成形试验研究[ J]. 建筑结构,2022,52(23):126-131,138. QIN Jie,LIU Cong,CAO Wei,et al. Forming test research on cable-stayed sheet metal spatial structure[J]. BuildingStructure,2022,52(23):126-131,138.