高层钢筋混凝土斜交网格结构振动台试验研究
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摘要
为对高层钢筋混凝土斜交网格结构的破坏机理及抗震性能进行深入研究,对一高层钢筋混凝土斜交网格建筑进行了1/25的模型模拟振动台试验。在试验中针对模型进入非线性后,相似关系中的弹性模量比并非定值的问题,采用了分级相似关系,使试验结果能更贴近原型反应。研究了模型结构的动力特性和在不同地震烈度作用下的加速度反应及关键位置的应变变化情况,探究造成结构破坏的原因,找出模型结构破坏的薄弱环节。根据斜交网格结构的受力特点,结合模型破坏形态,总结高层钢筋混凝土斜交网格建筑的优缺点,并为高层斜交网格建筑的平面形式设计及材料选择提出建议。
In order to study failure mechanism and aseismic performance of a high-rise diagonal frame structure,a shaking table test for a high-rise diagonal frame building model with 1/25 scale was conducted.Because Young modulus of the model material varied after it entered nonlinear stage,hierarchical similarity relation was used to make the result more accurate.The dynamic characteristics,acceleration response under different seismic intensities and strain variation in key locations of the model were studied.Meanwhile,the vulnerable segment and the failure reason of the model were analyzed.According to the mechanical characteristics and cracking pattern of the high-rise diagonal frame building model,the advantages and shortcomings of this kind of building were summarized.Some suggestions were presented for selection of material and engineering design of a high-rise diagonal frame building.
In order to study failure mechanism and aseismic performance of a high-rise diagonal frame structure,a shaking table test for a high-rise diagonal frame building model with 1/25 scale was conducted.Because Young modulus of the model material varied after it entered nonlinear stage,hierarchical similarity relation was used to make the result more accurate.The dynamic characteristics,acceleration response under different seismic intensities and strain variation in key locations of the model were studied.Meanwhile,the vulnerable segment and the failure reason of the model were analyzed.According to the mechanical characteristics and cracking pattern of the high-rise diagonal frame building model,the advantages and shortcomings of this kind of building were summarized.Some suggestions were presented for selection of material and engineering design of a high-rise diagonal frame building.
引文
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[2]周建,汪大绥.高层斜交网格结构体系的性能研究[J].建筑结构,2007,37(5):87-91.
[3]傅学怡,吴兵,陈贤川,等.卡塔尔某超高层建筑结构设计[J].深圳大学学报,2007,24(1):1-8.
[4]黄襄云,周福霖,金建敏,等.广州新电视塔结构模型振动台试验研究[J].土木工程学报,2010,43(8):21-29.
[5]韩小雷,唐剑秋,黄艺燕,等.钢管混凝土巨型斜向网格筒体非线性分析[J].地震工程与工程振动,2009,29(4):77-84.
[6]黄超,韩小雷,王传峰,等.斜交网格结构体系的参数分析及简化计算方法研究[J].建筑结构学报,2010,31(1):70-77.
[7]刘成清.钢管混凝土斜交网格柱外筒混合结构抗震性能研究[D].上海:同济大学,2009.
[8]张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.
[9]Meng Q L,Zhang M Z,Guo X.Dynamic simulation experimental method study about RC structure's[J].Nonlinear Performance in Earthquake Simulation Tests,2004,(11):30-35.
[10]黄思凝.钢筋混凝土结构小比例尺模型相似性研究[D].哈尔滨:中国地震局工程力学研究所,2008.
[11]赵作舟,管桦,钱稼茹.欠人工质量缩尺振动台试验结构模型设计方法[J].建筑结构学报,2010,31(7):78-85.
[12]朱杰江,吕西林,邹昀.上海环球金融中心模型结构振动台试验与理论分析的对比研究[J].土木工程学报,2005,38(10):18-26.
[13]LU X L,Fu G K,Shi W X,et al.Shake table model testing and its application[J].Structural Design of Tall and Special Buildings,2008,17(1):181-201.
[14]施卫星,李振刚,李素珍,等.深圳罗湖商务大厦模型振动台对比试验[J].同济大学学报,2008,36(1):12-16.
[15]何敏娟,梁峰,马人乐.大型超高钢结构电视塔模拟地震振动台试验研究[J].振动与冲击,2010,29(1):77-80.
[16]周颖,卢文胜,吕西林.模拟地震振动台模型实用设计方法[J].结构工程师,2003,38(3):30-33.
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