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(北京三磊建筑設(shè)計(jì)有限公司， 北京 100048)

[摘要]某綜合體商業(yè)樓地上主體結(jié)構(gòu)3~5層，二層、三層平面大凹凸，四層中部開大洞，屋頂為鋼桁架采光玻璃頂，下部樓層多處較大跨度平臺(tái)端部不允許設(shè)墻柱，局部端頭懸臂最大約15.1m。針對(duì)結(jié)構(gòu)布置十分不利的建筑方案要求，設(shè)計(jì)采用高強(qiáng)鋼棒懸吊下部平臺(tái)，通過(guò)桁架再將荷載傳遞至周邊框柱。重點(diǎn)介紹了結(jié)構(gòu)的體系選擇與設(shè)計(jì)思想、采取的加強(qiáng)措施、施工順序的合理確定及關(guān)鍵節(jié)點(diǎn)設(shè)計(jì)。

[關(guān)鍵詞]高強(qiáng)鋼棒； 防屈曲支撐； 施工順序； 舒適度； 防連續(xù)倒塌； 節(jié)點(diǎn)

中圖分類號(hào)： TU318    文獻(xiàn)標(biāo)識(shí)碼： A    文章編號(hào)： 1002-848X(2015)S2-0325-07 

Structural design of a complex commercial buildings on the ground

Nie Qilin

(Beijing Sunlay Design Group, Beijing 100048， China)

Abstract: A complex commercial building′s upper main structure has 3~5 stories. The second and third stories′ plans are convex and concave, the fourth plan has a big middle hole, the roof is a steel truss lighting glass roof. At the ends of the lower floors of multiple large span platforms do not allow wall or columns，and the local end has a maximum cantilever of about 15m. In view of such layout requirement which is harmful to the structure, design adopts high strength steel bar suspension lower platforms, through the truss transfers load to the surrounding frame columns. The design ideas, system structure, strengthen measures, reasonable construction sequence and key nodes were focused on.

Keywords: high strength steel bar; buckling restrained brace; construction sequence; comfortable dgree; anti continuous collapse; node

作者簡(jiǎn)介：聶其林，碩士，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Emial：nql80@126.com。