工程科学学报，第39卷，第9期：1443-1452,2017年9月 Chinese Journal of Engineering,Vol.39,No.9:1443-1452,September 2017 D0l:10.13374/j.issn2095-9389.2017.09.019;htp:/journals.ustb.edu.cn 设防烈度对框架一核心筒结构受力性能和材料用量 的影响 牟在根)四，杨雨青)，马万航2)，范重2) 1)北京科技大学土木与资源工程学院，北京1000832)中国建筑设计研究院，北京100044 ☒通信作者，E-mail:gmu@ces.usth.cdu.cm 摘要为了考察设防烈度对钢筋混凝土框筒结构受力性能、材料用量的影响，在充分调研了目前我国100m以上已建或在 建超高层建筑的基础上，选择150~300m范围内钢筋混凝土框架一核心筒办公类超高层作为代表性研究对象，建立了12个 不同烈度、不同高度下的计算模型，详细分析了其结构的周期比、剪重比、刚重比、地震作用和风荷载影响等结构受力性能以 及结构的用钢量、混凝土用量随设防烈度的变化情况.研究结果表明，对于济南恒大国际金融中心工程，随着设防烈度的提 高，结构自振周期减小，扭转周期滞后于平动周期，扭转效应减小，而结构剪重比明显增加：低烈度地区结构受重力二阶效应 的影响较大，整体稳定性成主要安全控制因素：地震作用的影响随设防烈度的增加而增大：6度区建筑超过200m后，用钢量 明显增加，而8度区用钢量随建筑高度呈线性增长：6度和7度区单位面积混凝土用量接近，而8度区混凝土用量增幅约为 19%左右，所以设防烈度对结构工程材料用量影响显著. 关键词框架一核心筒；设防烈度；受力性能：用钢量：混凝土折算厚度 分类号·TU973 Influence of fortification intensity on structural performance and material dosage of frame-tube structures MU Zai-gen,YANG Yu-qing,MA Wan-hang,FAN Zhong 1)School of Civil and Resource Engineering.University of Science and Technology Beijing,Beijing 100083,China 2)China Architecture Design and Research Group,Beijing 100044,China Corresponding author,E-mail:zgmu@ces.ustb.edu.cn ABSTRACT To determine the effect of fortification intensity on the mechanical properties and amount of material used in reinforced concrete frame-tube structures,high-rise buildings over 100 m in height that were either built or being built were researched.12 mod- els of high-rise office buildings ranging from 150m to 300m in height and with different seismic intensities were analyzed,with respect to their period ratios,shear-weight ratios,stiffness-weight ratios,earthquake and wind-load influences,and the costs of steel and con- crete for different fortification intensities.The results show that for the Jinan International Finance Center Landmark Tower,with in- creasing fortification intensity,the natural vibration period of the structure decreases,the torsion period lags behind the vibration peri- od,the torsional effect reduces,and the shear-weight ratio significantly increases.Structures with low fortification intensities are great- ly influenced by gravity as a second-order effect and their entire stability becomes the main safety control factor.The influence of earth- quake action increases with increased fortification intensity.In the region with seismic fortification intensity 6(0.05 g),steel con- sumption for buildings over 200 m in height increases significantly and in the intensity region 8(0.20g),steel consumption has linear growth with height.The concrete dosage in unit area in intensity region 6(0.05g)is close to that in intensity region 7(0.10g),and increases by about 19%in intensity region 8(0.20g).As such,the influence of fortification intensity is significant with respect to 收稿日期：2016-10-17 基金项目：国家自然科学基金资助项目(51578064)：北京市自然科学基金项目(8172031)工程科学学报,第 39 卷,第 9 期:1443鄄鄄1452,2017 年 9 月 Chinese Journal of Engineering, Vol. 39, No. 9: 1443鄄鄄1452, September 2017 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2017. 09. 019; http: / / journals. ustb. edu. cn 设防烈度对框架—核心筒结构受力性能和材料用量 的影响 牟在根1) 苣 , 杨雨青1) , 马万航1,2) , 范 重2) 1)北京科技大学土木与资源工程学院, 北京 100083 2) 中国建筑设计研究院, 北京 100044 苣通信作者, E鄄mail: zgmu@ ces. ustb. edu. cn 收稿日期: 2016鄄鄄10鄄鄄17 基金项目: 国家自然科学基金资助项目(51578064); 北京市自然科学基金项目(8172031) 摘 要 为了考察设防烈度对钢筋混凝土框筒结构受力性能、材料用量的影响,在充分调研了目前我国 100 m 以上已建或在 建超高层建筑的基础上,选择 150 ~ 300 m 范围内钢筋混凝土框架—核心筒办公类超高层作为代表性研究对象,建立了 12 个 不同烈度、不同高度下的计算模型,详细分析了其结构的周期比、剪重比、刚重比、地震作用和风荷载影响等结构受力性能以 及结构的用钢量、混凝土用量随设防烈度的变化情况. 研究结果表明,对于济南恒大国际金融中心工程,随着设防烈度的提 高,结构自振周期减小,扭转周期滞后于平动周期,扭转效应减小,而结构剪重比明显增加;低烈度地区结构受重力二阶效应 的影响较大,整体稳定性成主要安全控制因素;地震作用的影响随设防烈度的增加而增大;6 度区建筑超过 200 m 后,用钢量 明显增加,而 8 度区用钢量随建筑高度呈线性增长;6 度和 7 度区单位面积混凝土用量接近,而 8 度区混凝土用量增幅约为 19% 左右,所以设防烈度对结构工程材料用量影响显著. 关键词 框架—核心筒; 设防烈度; 受力性能; 用钢量; 混凝土折算厚度 分类号 TU973 Influence of fortification intensity on structural performance and material dosage of frame鄄tube structures MU Zai鄄gen 1) 苣 , YANG Yu鄄qing 1) , MA Wan鄄hang 1,2) , FAN Zhong 2) 1) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) China Architecture Design and Research Group, Beijing 100044, China 苣Corresponding author, E鄄mail: zgmu@ ces. ustb. edu. cn ABSTRACT To determine the effect of fortification intensity on the mechanical properties and amount of material used in reinforced concrete frame鄄鄄tube structures, high鄄rise buildings over 100 m in height that were either built or being built were researched. 12 mod鄄 els of high鄄rise office buildings ranging from 150 m to 300 m in height and with different seismic intensities were analyzed, with respect to their period ratios, shear鄄weight ratios, stiffness鄄weight ratios, earthquake and wind鄄load influences, and the costs of steel and con鄄 crete for different fortification intensities. The results show that for the Jinan International Finance Center Landmark Tower, with in鄄 creasing fortification intensity, the natural vibration period of the structure decreases, the torsion period lags behind the vibration peri鄄 od, the torsional effect reduces, and the shear鄄weight ratio significantly increases. Structures with low fortification intensities are great鄄 ly influenced by gravity as a second鄄order effect and their entire stability becomes the main safety control factor. The influence of earth鄄 quake action increases with increased fortification intensity. In the region with seismic fortification intensity 6 (0郾 05 g), steel con鄄 sumption for buildings over 200 m in height increases significantly and in the intensity region 8 (0郾 20 g), steel consumption has linear growth with height. The concrete dosage in unit area in intensity region 6 (0郾 05 g) is close to that in intensity region 7 (0郾 10 g), and increases by about 19% in intensity region 8 (0郾 20 g). As such, the influence of fortification intensity is significant with respect to