- 摘 要
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(湖南省建筑設(shè)計院集團股份有限公司, 長沙 410012)
摘要: 某項目中兩棟高層住宅通過型鋼桁架連接組成連體結(jié)構(gòu),下部主體采用剪力墻結(jié)構(gòu),型鋼桁架與兩端主樓采用剛性連接。 考慮豎向地震作用,對整體結(jié)構(gòu)進行了抗震性能分析,結(jié)果表明,整體結(jié)構(gòu)和構(gòu)件性能均能滿足預(yù)設(shè)的性能目標要求。 分析了連體結(jié)構(gòu)混凝土樓板在大震作用下的工作性能和連體結(jié)構(gòu)在中震和大震作用下的受力性能,同時對型鋼桁架兩端與主樓連接的連接節(jié)點進行了有限元分析,分析結(jié)果表明,鋼桁架在中震和大震作用下均處于彈性狀態(tài),連體結(jié)構(gòu)樓板在大震作用下的受力滿足要求。 考慮到連體結(jié)構(gòu)跨度較大,對其進行了人致激勵下的加速度響應(yīng)分析,并采用拆除構(gòu)件法對連體結(jié)構(gòu)進行了抗連續(xù)倒塌分析,結(jié)果表明,連體結(jié)構(gòu)舒適度可以滿足要求,且連接結(jié)構(gòu)能夠滿足抗連續(xù)倒塌要求。
關(guān)鍵詞: 連體結(jié)構(gòu); 型鋼桁架; 彈塑性時程; 舒適度分析; 抗連續(xù)倒塌分析
中圖分類號:TU318 文獻標志碼:A 文章編號:1002-848X(2022)22-0072-07
DOI:10. 19701 / j. jzjg. ZJ220083
Discussion on key issues in structural design of a conjoined residence
YANG Chengchao, LUO Lie, WANG Siqing, MA Liming, PENG Zhiwei
(Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)
Abstract: In a project, two high-rise residential buildings are connected by section steel truss to form a conjoinedstructure. The lower main body adopts the shear wall structure, and the section steel truss is rigidly connected to the mainbuildings at both ends. Considering the vertical earthquake action, the seismic performance analysis of the whole structurewas carried out. The results show that the performance of the whole structure and components can meet the presetperformance target requirements. The working performance of the conjoined structure concrete floor under the action of therare earthquake and the mechanical performance of the conjoined structure under the action of the fortification earthquakeand the rare earthquake were analyzed. At the same time, the finite element analysis was carried out on the connectionnodes between the two ends of the section steel truss and the main building. The results show that the steel truss is in anelastic state under the action of the fortification earthquake and the rare earthquake, and the stress of the floor slab of theconjoined structure under the action of the rare earthquakes meets the requirements. Considering the large span of theconjoined structure, the acceleration response analysis under human-induced excitation was carried out, and the antiprogressive collapse resistance analysis of the conjoined structure was carried out by using the member removal method. Theresults show that the comfort of the conjoined structure can meet the requirements, and the conjoined structure can meet therequirements of anti-progressive collapse resistance.
Keywords:conjoined structure; section steel truss; elastic-plastic time history; comfort analysis; anti-progressive collapseresistance analysis
∗湖南省建筑設(shè)計院集團股份有限公司科技研發(fā)課題(KY0300-0000-2021-0204)。
第一作者:楊承超,碩士,高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)設(shè)計工作,Email:106004025@ qq. com。
[引用本文] 楊承超,羅列,王四清,等. 某連體住宅結(jié)構(gòu)設(shè)計關(guān)鍵問題探討[J]. 建筑結(jié)構(gòu),2022,52(22):72-78.YANG Chengchao,LUO Lie,WANG Siqing,et al. Discussion on key issues in structural design of a conjoined residence[J]. Building Structure,2022,52(22):72-78.
