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(湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司, 長沙 410012)

摘要: 山西景觀平臺(tái)采用帶斜索的鋼結(jié)構(gòu)平臺(tái),懸挑尺度大,自索塔懸挑近 50m,采用預(yù)應(yīng)力索,整體結(jié)構(gòu)受力復(fù)雜。 為了研究其整體受力狀態(tài)和工作性能,進(jìn)行了整體結(jié)構(gòu)的靜力分析、施工階段分析、線彈性屈曲分析、抗連續(xù)倒塌分析、振動(dòng)舒適度分析、關(guān)鍵節(jié)點(diǎn)的有限元細(xì)部分析。 分析結(jié)果表明:結(jié)構(gòu)整體參數(shù)較為合理,豎向撓度和水平位移均滿足設(shè)計(jì)要求;所有鋼構(gòu)件在施工過程中整體應(yīng)力水平較低,滿足施工要求;斷索后所有鋼構(gòu)件均未產(chǎn)生塑性鉸,均處在彈性階段,安全冗余度高,可滿足抗連續(xù)倒塌的要求;人致激勵(lì)作用下的舒適度可滿足要求;節(jié)點(diǎn)細(xì)部分析結(jié)果表明,節(jié)點(diǎn)等效應(yīng)力整體水平較低,小于鋼材的設(shè)計(jì)強(qiáng)度。

關(guān)鍵詞: 大懸挑景觀平臺(tái); 靜力分析; 施工階段分析; 舒適度分析; 屈曲分析; 抗連續(xù)倒塌分析

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)22-0029-06

DOI:10. 19701 / j. jzjg. ZJ220085

Structural design and analysis of a landscape platform in Shanxi

YANG Chengchao, WANG Siqing, LIU Jianwen, CAO Kezhou, LIU Yincen

(Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)

Abstract:Steel platform with diagonal cable is used on shanxi landscape platform and it has a large cantilever scale nearly50m cantilevered from the tower. The prestressed cable is used, and the entire structure is subjected to complex forces. Inorder to study its overall stress state and working performance, the static analysis, construction stage analysis, linear elasticbuckling analysis, continuous collapse resistance analysis, vibration comfort analysis, and finite element detail analysis ofkey nodes of the overall structure were carried out. The results show that the overall parameters of the structure arereasonable, and the vertical deflection and horizontal displacement both meet the design requirements. The overall stresslevel of all steel members during construction is low, meeting the construction requirements. After the cable broken, allsteel members have no plastic hinges, they are in the elastic stage with high safety redundancy, which can meet therequirements of continuous collapse resistance. The comfort degree under the effect of human stimulation can meet therequirements. The results of the joint detail analysis show that the overall level of the equivalent stress of the joint is lowerthan the design strength of the steel.

Keywords:large cantilever landscape platform; static analysis; construction stage analysis; comfort analysis; bucklinganalysis; continuous collapse resistance analysis

∗湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司科技研發(fā)課題(KY0300-0000-2021-0158)。

第一作者:楊承超,碩士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)設(shè)計(jì)工作,Email:106004025@ qq. com。

[引用本文] 楊承超,王四清,劉建文,等. 山西某景觀平臺(tái)結(jié)構(gòu)設(shè)計(jì)與分析[J]. 建筑結(jié)構(gòu),2022,52(22):29-34.YANG Chengchao,WANG Siqing,LIU Jianwen,et al. Structural design and analysis of a landscape platform in Shanxi[J].Building Structure,2022,52(22):29-34.