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(中國中元國際工程有限公司, 北京 100089)

摘要: 海口雙子塔?南塔結(jié)構(gòu)體系為設(shè)置加強(qiáng)層的巨型支撐框架?核心筒混合結(jié)構(gòu),其中腰桁架采用折線型布置,其與在同一平面內(nèi)布置的常規(guī)直線型腰桁架在受力性能、桿件布置和節(jié)點(diǎn)構(gòu)造上均有較大不同. 通過對不同弦桿夾角腰桁架結(jié)構(gòu)模型算例的計(jì)算分析,得到了折線型腰桁架桿件的彎曲變形、剪切變形、軸向變形和扭轉(zhuǎn)變形分量分別引起的結(jié)構(gòu)側(cè)向變形的比例關(guān)系,及主要變形分量引起的結(jié)構(gòu)側(cè)向變形與折線型腰桁架弦桿夾角的關(guān)系,提出了影響折線型腰桁架抗側(cè)剛度的主要影響因素與變化規(guī)律,折線型腰桁架的抗側(cè)剛度與腰桁架弦桿夾角正弦的平方近似為線性關(guān)系. 根據(jù)折線型腰桁架的特點(diǎn)提出了桿件布置和節(jié)點(diǎn)設(shè)計(jì)的原則,對于復(fù)雜空間結(jié)構(gòu)桁架合理設(shè)置腹桿角度可以使節(jié)點(diǎn)設(shè)計(jì)簡單、傳力可靠.

關(guān)鍵詞: ?？陔p子塔; 超高層建筑; 加強(qiáng)層; 腰桁架; 抗側(cè)剛度

中圖分類號(hào):TU398. 7 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002?848X(2022)16?0022?04

DOI:10. 19701 / j. jzjg. ZJ200033

Study on fold?line?shaped belt truss of Haikou Twin Towers?South Tower

ZHANG Song, ZHANG Tongyi, WANG Ning, XIAO Ziqiang, ZHANG Zhe, LUO Youxin, ZHANG Te

(China IPPR International Engineering Co. , Ltd. , Beijing 100089, China)

Abstract: The structural system of Haikou Twin Towers?South Tower is mixed structure of mega brace frame?corewall withstrengthened?stories. Compared with the conventional linear belt truss arranged in one space, the belt trusses are differentin the mechanical performance, the arrangement of the members and the joints construction. Through the calculation andanalysis of the model examples of belt truss structures with different chord angles, the proportional relationship of the lateraldeformation of the structure caused by the bending deformation, shear deformation, axial deformation and torsionaldeformation components of the fold?line?shaped belt truss members, and the relationship between the lateral deformation ofthe structure caused by the main deformation components and the chord angle of the fold?line?shaped belt truss, the maininfluencing factors and the changing law of the lateral stiffness of the fold?line?shaped belt truss were put forward. Thelateral stiffness of the fold?line?shaped belt truss is approximately linear with the square of the sine of the chord angle of thebelt truss. According to the characteristics of the fold?line?shaped belt truss, the principles of member arrangement andjoint design were put forward. For complex space structure truss, reasonable setting of the web member angle can make thejoint design simple and the force transmission reliable.

Keywords:Haikou Twin Towers; super high?rise building; strengthened?stories; belt?truss; lateral stiffness

∗企業(yè)橫向科研基金項(xiàng)目(S2016013R).

第一作者:張松,博士,教授級高級工程師,一級注冊結(jié)構(gòu)工程師、注冊土木工程師(巖土),主要從事復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究,Email:zhangsong@ ippr. net.

[引用本文] 張松,張同億,王寧,等. ?？陔p子塔?南塔折線型腰桁架設(shè)計(jì)研究[ J]. 建筑結(jié)構(gòu),2022,52(16):22?25,6. ZHANG Song,ZHANG Tongyi,WANG Ning,et al. Study on fold?line?shaped belt truss of Haikou Twin Towers?SouthTower[J]. Building Structure,2022,52(16):22?25,6.