884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(1 同濟(jì)大學(xué)建筑工程系, 上海 200092; 2 南京市建筑設(shè)計(jì)研究院有限責(zé)任公司, 南京 210037)

摘要: 為滿足建筑立面效果和使用功能的要求,某高層建筑結(jié)構(gòu)存在扭轉(zhuǎn)不規(guī)則、樓板不連續(xù)、尺寸突變、構(gòu)件間斷、承載力突變和局部不規(guī)則共 6 項(xiàng)不規(guī)則,是典型的特別不規(guī)則超限高層建筑結(jié)構(gòu)。 該工程的設(shè)計(jì)重難點(diǎn)是需要針對(duì)每一個(gè)不規(guī)則項(xiàng)進(jìn)行專項(xiàng)分析研究,提出針對(duì)性的結(jié)構(gòu)方案和加強(qiáng)措施。 對(duì)穿層柱進(jìn)行彈性屈曲分析,復(fù)核穿層柱的真實(shí)計(jì)算長(zhǎng)度;對(duì)轉(zhuǎn)換構(gòu)件進(jìn)行多方案比選,做到傳力清晰并避免“米”字形復(fù)雜節(jié)點(diǎn),降低施工難度;對(duì)豎向收進(jìn)部位上、下層進(jìn)行加強(qiáng)并控制層間位移角比值來(lái)減少剛度突變;對(duì)大懸挑構(gòu)件配置預(yù)應(yīng)力筋控制梁的裂縫和撓度;對(duì)樓板大開(kāi)洞部位,通過(guò)樓板應(yīng)力分析考察樓板能否有效傳遞水平作用,并根據(jù)應(yīng)力結(jié)果進(jìn)行補(bǔ)強(qiáng)。結(jié)構(gòu)整體彈性和彈塑性分析結(jié)果表明,通過(guò)專項(xiàng)分析加強(qiáng)后主體結(jié)構(gòu)能達(dá)到預(yù)定的性能目標(biāo),且結(jié)構(gòu)關(guān)鍵構(gòu)件在罕遇地震下不屈服,具有良好的延性。

關(guān)鍵詞: 特別不規(guī)則高層建筑; 桁架轉(zhuǎn)換; 體型收進(jìn); 樓板應(yīng)力分析; 穿層柱; 預(yù)應(yīng)力懸挑梁; 抗震性能化設(shè)計(jì)

中圖分類號(hào):TU375 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)23-0092-08

DOI:10. 19701 / j. jzjg. LS202066

Structural design and analysis of a particularly irregular high-rise building

HU Daohang1,2

(1 Department of Building Engineering, Tongji University, Shanghai 200092, China; 2 Nanjing ArchitecturalDesign & Research Institute Co. , Ltd. , Nanjing 210037, China)

Abstract: In order to meet the requirements of building facade effect and use function, a high-rise building structure hassix irregularities, including torsion irregularity, slab discontinuity, size mutation, member discontinuity, bearing capacitymutation and local irregularity. It is a typical particularly irregular out-of-code high-rise building structure. The key anddifficult point of the design of the project is to carry out special analysis and research for each irregular item, and proposetargeted structural schemes and strengthening measures. The elastic buckling analysis of the cross-layer column was carriedout, and the real calculated length of the cross-layer column was checked. Multiple schemes were compared and selectedfor the transfer components to ensure clear force transmission, avoid the complex double-cross-shaped nodes, and reducethe construction difficulty. The vertical setback part was strengthened and the ratio of interlayer displacement drift wascontrolled to reduce the stiffness change. For large cantilevered members, prestressed reinforcement was used to control thecrack and deflection of the beam. The slab stress analysis was conducted to investigate whether the slab could effectivelytransfer the horizontal action in the large opening parts of the slab, and the reinforcement was carried out according to thestress results. The results of elastic and elastic-plastic analysis show that the main structure can reach the predeterminedperformance target after the above special analysis and the key components of the structure do not yield under the rareearthquake, and it has good ductility.

Keywords:particularly irregular high-rise building; truss transfer; vertical setback; slab stress analysis; cross-layercolumn; prestressed cantilevered beam; performance-based seismic design

第一作者:胡道航,碩士,工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事超高層、復(fù)雜建筑結(jié)構(gòu)設(shè)計(jì),Email:290310207@ qq. com。

[引用本文] 胡道航. 某特別不規(guī)則高層建筑結(jié)構(gòu)設(shè)計(jì)與分析[ J]. 建筑結(jié)構(gòu),2022,52(23):92-99. HU Daohang.Structural design and analysis of a particularly irregular high-rise building[J]. Building Structure,2022,52(23):92-99.