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（1 青海建筑職業(yè)技術(shù)學(xué)院建筑工程系， 西寧 810012； 2 北京首鋼國(guó)際工程技術(shù)有限公司，北京 100043；  3 北京住總集團(tuán)人力資源部， 北京 100045）

［摘要］某商業(yè)區(qū)城市綜合體西塔北立面6～8層的空中四合院導(dǎo)致上方豎向構(gòu)件不連續(xù)，為實(shí)現(xiàn)建筑立面效果，從8層頂至13層頂設(shè)置了42m跨6層疊層空腹桁架。結(jié)構(gòu)設(shè)計(jì)時(shí)，結(jié)合建筑立面幕墻分格要求，對(duì)比研究了多個(gè)結(jié)構(gòu)方案、多種材料、多種布置方式等，并針對(duì)桁架關(guān)鍵節(jié)點(diǎn)連接做法采用ABAQUS進(jìn)行了有限元分析。施工階段，采用SAP2000針對(duì)多個(gè)施工方案進(jìn)行了全過(guò)程施工模擬分析，得到了施工過(guò)程中不同階段下的桿件內(nèi)力、變形等數(shù)據(jù)，對(duì)施工方案提出了關(guān)鍵控制要求。結(jié)果表明，疊層空腹桁架受力均勻，整體性和抗震性好，能滿(mǎn)足建筑及結(jié)構(gòu)需求； 采用相鄰兩層組合形成三組單層空腹桁架的“疊層”施工方案，避免了逐層施工時(shí)弦桿在整體桁架形成前受力較大、與一次性加載的桿件內(nèi)力和變形有很大差異的弊端。

［關(guān)鍵詞］大跨結(jié)構(gòu)； 疊層空腹桁架； 施工控制； 有限元分析; 施工模擬

中圖分類(lèi)號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)20-0071-06

Study on structural design and construction control of vierendeel truss structure for a tower building

ZHOU Ying1, LI Jungang 2, ZHOU Xiang1, LIU Guangjun3

（1 Department of Construction Engineering, Qinghai Architectural Vocational and Technical College, Xining 810012， China； 2 Beijing Shougang International Engineering Technology Co., Ltd., Beijing 100043， China；  3 Beijing Zhuzong Group Co., Ltd., Beijing 100045， China)

Abstract:The 6～8 storey sky courtyard in the north elevation of the west tower of an urban complex in a commercial area caused discontinuity in the vertical members above, and in order to achieve the effect of the building elevation, 42m span 6 storey laminated vierendeel trusses were installed from the top of 8 storeys to the top of 13 storeys. In the structural design, multiple structural solutions, multiple materials and multiple arrangement methods were compared and studied in conjunction with the requirements of the building fa-ade curtain wall grid, and ABAQUS was used to conduct finite element analysis for the connection of key truss nodes. At the construction stage, SAP2000 was used to carry out the whole process construction simulation analysis for a number of construction schemes, and the data on the internal force and deformation of the rods at different stages of the construction process were obtained, which put forward the key control requirements for the construction schemes. The results show that the laminated vierendeel truss can meet the architectural and structural requirements with its uniform force, good integrity and seismic resistance. The “laminated” construction scheme, in which two adjacent layers are combined to form three single-layer laminated vierendeel truss, avoids the disadvantages of the large force on the chord bar before the whole truss is formed and the great difference between the internal force and deformation of the one-time loading rod.

Keywords:large span structure; laminated vierendeel truss; construction control； finite element analysis; construction simulation

*青藏高寒地區(qū)裝配式生態(tài)廁所與太陽(yáng)能耦合技術(shù)研究與示范（2018-NN-150）。

作者簡(jiǎn)介：周瑩，本科，副教授，高級(jí)工程師，一級(jí)注冊(cè)造價(jià)工程師，注冊(cè)咨詢(xún)工程師，Eamil：z_y333@163.com。