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(1 中國建筑科學(xué)研究院有限公司, 北京 100013; 2 北京京江國際工程咨詢有限公司, 北京 100086;3 中國建筑第八工程局有限公司, 上海 200135)
摘要: 國家會展中心(天津)工程一、二期之間跨越市政道路的兩座人行天橋均為大跨度人行天橋,外觀及功能相同,但由于 1#人行天橋下市政管線復(fù)雜,相比 2#人行天橋少一個橋墩,其跨度更大,最大跨度達(dá)到 90. 2m,且兩座人行天橋扶梯樓梯等附屬結(jié)構(gòu)多,結(jié)構(gòu)設(shè)計更復(fù)雜. 以較大跨度的 1#人行天橋為例,介紹了鋼結(jié)構(gòu)大跨度人行天橋的主要設(shè)計要點,采用 MIDAS 軟件對 1#人行天橋進(jìn)行了結(jié)構(gòu)受力分析,同時對人行舒適度進(jìn)行驗算. 分析結(jié)果表明:1#人行天橋結(jié)構(gòu)體系剛度均勻,整體性良好,設(shè)計合理;大跨度鋼桁架在跨中和支座處的受力較大,需要適當(dāng)加強;1#人行天橋的各項驗算結(jié)果能夠滿足設(shè)計需求.
關(guān)鍵詞: 國家會展中心(天津); 大跨度人行天橋; 鋼結(jié)構(gòu)設(shè)計; 舒適度分析
中圖分類號:TU997 文獻(xiàn)標(biāo)志碼:A 文章編號:1002?848X(2022)16?0050?05
DOI:10. 19701 / j. jzjg. LS210062
Design of large?span pedestrian bridge in National Convention and Exhibition Center (Tianjin) project
LIU Hao1, ZHAO Jianguo1, LI Ding2, REN Kai2, ZHOU Lei3
(1 China Academy of Building Research Co. , Ltd. , Beijing 100013, China; 2 Beijing Jingjiang InternationalConstruction Consulting Co. , Ltd. , Beijing 100086, China; 3 China Construction Eighth Engineering DivisionCo. , Ltd. , Shanghai 200135, China)
Abstract: The two pedestrian bridges spanning municipal roads between the first and second phases of the NationalConvention and Exhibition Center ( Tianjin) project are long?span pedestrian bridges with the same appearance andfunction, but due to the complexity of municipal pipelines under the 1# pedestrian bridge, there is one less pier and largerspan than 2# pedestrian bridges, the maximum span of the 1# pedestrian bridge reaches 90. 2m. There are many auxiliarystructures such as escalators and stairs on the two pedestrian bridges, and the structural design is more complicated. Takingthe 1# pedestrian bridge with a large span as an example, the main design points of the steel structure long?span pedestrianbridge were introduced. MIDAS was used to analyze the structural force analysis of the pedestrian bridge and the pedestriancomfort was checked. The results show that the 1# pedestrian bridge has uniform stiffness, good integrity and reasonabledesign. The long?span steel truss has a large force at the mid?span and the support, which needs to be properlystrengthened. The verification results of the 1# pedestrian bridge can meet the design requirements.
Keywords:National Convention and Exhibition Center ( Tianjin); large?span pedestrian bridge; steel structural design;comfort analysis
第一作者:劉浩,碩士,工程師,主要從事建筑結(jié)構(gòu)設(shè)計工作,Email:liuhao@ cabr?design. com.
[引用本文] 劉浩,趙建國,李鼎,等. 國家會展中心(天津) 工程大跨度人行天橋設(shè)計[ J]. 建筑結(jié)構(gòu),2022,52(16):50?54,106. LIU Hao,ZHAO Jianguo,LI Ding,et al. Design of large?span pedestrian bridge in National Conventionand Exhibition Center (Tianjin) project[J]. Building Structure,2022,52(16):50?54,106.
