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(1 河北省土木工程災(zāi)變控制與災(zāi)害應(yīng)急重點(diǎn)實(shí)驗(yàn)室, 廊坊 065201; 2 華北科技學(xué)院建筑工程學(xué)院, 廊坊 065201; 3 中原工學(xué)院建筑工程學(xué)院, 鄭州 450007;4 北京工業(yè)大學(xué)空間結(jié)構(gòu)研究中心, 北京 100124)

摘要: 斜拉金屬薄板空間結(jié)構(gòu)是一種新型的預(yù)應(yīng)力空間結(jié)構(gòu),將金屬薄板以受拉構(gòu)件的形式應(yīng)用于結(jié)構(gòu)中,既可充分發(fā)揮金屬板材的抗拉強(qiáng)度,又可以將受力構(gòu)件與圍護(hù)構(gòu)件合二為一。 以斜拉金屬薄板空間結(jié)構(gòu)為背景,提出了 4種適合該結(jié)構(gòu)的施工成形方法。 為了進(jìn)一步驗(yàn)證施工成形方法的可行性,并確定最優(yōu)的施工成形方法,對(duì)實(shí)際工程進(jìn)行 1:10 的縮尺,采用模型成形試驗(yàn)和有限元軟件模擬對(duì)比初始態(tài)位移變化來(lái)確定最優(yōu)的施工成形方法;再以最優(yōu)施工成形方法為參照組,對(duì)比另外 3 種施工成形方法在結(jié)構(gòu)構(gòu)件中產(chǎn)生的應(yīng)力值,對(duì)比 3 種方法的優(yōu)劣。 結(jié)果表明:張拉斜索法是最優(yōu)的施工成形方法,不僅相對(duì)于初始態(tài)位移變化較小,而且施工便捷。 另外 3 種施工成形方法,若為了控制應(yīng)力變化,則選擇頂升鋼柱法;若為了施工便捷,則選擇張拉背索法;直接張拉薄板法不推薦使用。

關(guān)鍵詞: 斜拉金屬薄板; 空間結(jié)構(gòu); 成形試驗(yàn); 施工成形方法

中圖分類號(hào):TU399 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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

∗河北省重點(diǎn)研發(fā)計(jì)劃(22375410D)。

第一作者:秦杰,博士,教授,主要從事大跨空間結(jié)構(gòu)等方面研究,Email:qjcumt@ 263. net。

[引用本文] 秦杰,劉聰,曹偉,等. 斜拉金屬薄板空間結(jié)構(gòu)成形試驗(yàn)研究[ J]. 建筑結(jié)構(gòu),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.