周颖
复杂高层结构抗震性能研究,型钢钢筋混凝土结构抗震性能研究,基于性态的抗震设计方法研究。
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- 姓名:周颖
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学科领域:
土木建筑结构
- 研究兴趣:复杂高层结构抗震性能研究,型钢钢筋混凝土结构抗震性能研究,基于性态的抗震设计方法研究。
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【期刊论文】SHAKING TABLE MODEL TEST AND NUMERICAL ANALYSIS OF A COMPLEX HIGH- RISE BUILDING
周颖, XILIN LU, YING ZHOU, WENSHENG LU
THE STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS/ Struct. Design Tall Spec. Build. 16. 131-164(2007),-0001,():
-1年11月30日
Owing to commercial or aesthetic considerations, the shapes of high-rise city buildings are becoming increasingly unique and complicated. This brings challenges to structural engineers in analyzing and predicting their dynamic responses, which are crucial to the safety of the buildings. For these buildings in China, a detailed study, sometimes including shaking table testing, is required to verify the safety and rationality of their design. This paper presents results of a study performed for a high-rise building with a large space in the ground floor and large openings in elevation. The maximum responses of acceleration and deformation were measured and evaluated, as well as the dynamic characteristics, cracking pattern and failure mechanism of the building. In addition, a 3D finite element analysis was carried out and the analytical results were compared with experimental ones to gain a better understanding of the structural behavior. Suggestions regarding the design of this type of structure were also derived from the test results.
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【期刊论文】An applied model for steel reinforced concrete columns
周颖, Xilin Lu, Ying Zhou
Structural Engineering and Mechanics, Vol.27, No.6(2007) 697-711,-0001,():
-1年11月30日
Though extensive research has been carried out for the ultimate strength of steel reinforced concrete(SRC) members under static and cyclic load, there was only limited information on the applied analysis models. Modeling of the inelastic response of SRC members can be accomplished by using a microcosmic model. However, generally used microcosmic model, which usually contains a group of parameters, is too complicated to apply in the nonlinear structural computation for large whole buildings. The intent of this paper is to develop an effective modeling approach for the reliable prediction of the inelastic response of SRC columns. Firstly, five SRC columns were tested under cyclic static load and constant axial force. Based on the experimental results, normalized trilinear skeleton curves were then put forward. Theoretical equation of normalizing point (ultimate strength point) was built up according to the load-bearing mechanism of RC columns and verified by the 5 specimens in this test and 14 SRC columns from parallel tests. Since no obvious strength deterioration and pinch effect were observed from the load-displacement curve, hysteresis rule considering only stiffness degradation was proposed through regression analysis. Compared with the experimental results, the applied analysis model is so reasonable to capture the overall cyclic response of SRC columns that it can be easily used in both static and dynamic analysis of the whole SRC structural systems.
steel reinforced concrete(, SRC), , applied model, ultimate bearing strength, skeleton curve, hysteresis rule.,
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【期刊论文】Shaking Table Test and Numerical Analysis of RC Frames with Viscous Wall Dampers
周颖, Xilin Lu , Ying Zhou , Feng Yan
JOURNAL OF STRUCTURAL ENGINEERING ASCE JANUARY 2008,-0001,():
-1年11月30日
This paper presents a comprehensive investigation on viscous wall dampers (VWD) used for seismic response mitigation of reinforced concrete (RC) frames. First, a shaking table test on a large-scaled three-story RC frame with VWD and another identical three-story RC frame without any dampers was carried out. A total of three types of earthquake excitations were inputted to the shaking table to evaluate the effects of VWD on seismic response mitigation. The influence of different earthquake input intensities on seismic performance of VWD were also examined. From the experiment, this paper further assessed the performance of VWD on seismic retrofitting of a partly damaged RC frame. The test results show that the main effect of installing VWD is to provide a large amount of supplemental damping to the RC frame, and at the same time the stiffness of the structure is also raised moderately as an accessorial effect. As a result, the displacement responses of the RC frame can always be reduced significantly, while the acceleration responses and the base shear of the RC frame were reduced in some test cases, but increased in other cases. The test results of seismic retrofit also show that seismic responses of the damaged RC frame can be alleviated evidently by the installation of VWD and, therefore, installing VWD is an effective retrofitting approach for RC frames. After test investigation, elastic and inelastic seismic responses of the RC frame were numerically simulated using finite element software Sap2000 and Canny99, respectively. A good agreement of experimental results and analysis results verified the analytical method and model used for RC structures with VWD.
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【期刊论文】CYCLIC STATIC TESTS OF STEEL ENCASED RC TUBES AND COUPLED WALLS
周颖, XILIN LU , YING ZHOU , MINGANG WU
,-0001,():
-1年11月30日
Composite members and hybrid systems are to be widely used in the high-rise buildings to make full use of structural steel and concrete. By employing the steel reinforced concrete (SRC) wall system, structural engineers expect to obtain the increase of stiffness, strength, ductility and fire resistance capacity; the compact cross-section of high-rise systems; and the reduction of construction cost and time. Due to the deficiencies in the present codes and in the research base, however, better rules for determining shear carrying capacity of SRC walls are needed. This paper is focusing on the tests and formulations of SRC coupled walls (SCW) and SRC tubes (ST). Three 1/5 scaled specimens of SCW were tested under cyclic loading and constant axial force, while three ST specimens were subjected to reversed loading without axial force. These specimens were measured with the time history and observed failing in shear. The formulae of ultimate shear strength of SCW and ST were then established on the basis of the shear-bearing mechanism analysis of RC structural walls. Predictions of shear strength from the proposed method are compared with experimental results. Taking the safety margin of the design into consideration, formulae of SRC walls proposed here are suitable for the implementation in a code of practice.
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【期刊论文】SEISMIC PERFORMANCE OF A MULTI- TOWER HYBRID STRUCTURE
周颖, Ying Zhou , Xilin Lu
,-0001,():
-1年11月30日
In China, the irregular high-rise buildings are beconung more extensive. Considering the irregularities and complexities of these buildings, it is significant to verify the safety and rationality of their seismic design through effective means including small scale dynamic model tests, refined numerical analysis and large scale joint tests. The target building of this paper is Shanghai International Design Center (SHIDC), which has two different-height connected towers designed by Japanese Architect Tadao Ando. The hybrid system of reinforced concrete core walls in conjunction with perimeter steel frames is out of Chinese code in the plan and elevation layouts. Thus, scaled model was carefully tested on the shaking table to obtain the weak position, dynamic characteristics, inter-story drift, and shear force of the structure. A linear dynamic analysis by ETABS was performed to compare, check, and support the experimental results. On the basis of those results, the seismic performance of the complex irregular structure was evaluated and the suggestions to the same type of structural design were given.
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【期刊论文】立面开人洞短肢剪力墙—筒体结构的动力试验研究及有限元计算分析
周颖, 吕西林, 卢文胜
建筑结构学报2004年10月第25卷第5期/ Journal of Building Structures Oct., 2004 Vol.25, No.5,-0001,():
-1年11月30日
高层住宅结构为满足建筑功能多样化、美观等要求,出现了底部大空间、立面大洞口等特殊效果的短肢剪力墙—筒体结构形式,对该复杂结构体系整体抗震性能的评估,需进行专门的试验研究和计算分析。本文针对具有上述结构特点的某高层结构整体模型,进行了模拟地震振动台试验和三维有限元分析,得到了结构的动力特性,以及在7度多遇、基本、罕遇烈度地震作用下的加速度反应、惯性力分布和位移反应等。结果表明,在地震作用下该结构底部墙肢中仅少数构件出现反弯点甚至不出现反弯点;除结构出屋面部分鞭梢效应明显外,其余部分均可以满足现行规范的抗震设防要求;工程设计中宜改善端部筒体以及转换大梁与筒体连接处的强度和延性。
短肢剪力墙—筒体, 整体模型振动台试验, 有限元分析
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周颖, 吕西林
地震工程与工程振动2008年2月第28卷第1期/ JOURNAL OF EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION Feh. 2008 Vol.28 No.1,-0001,():
-1年11月30日
本文针对某平面不规则、立面开大洞、带高位转换层的超限复杂高层结构,首先建立了整体模型结构的非线性计算模型,根据振动台试验结果选择了材料非线性参数,进行了弹塑性时程分析,并对模型结构及参数进行了验证。用验证过的模型和参数对原型结构进行了弹塑性时程分析,并对该结构作出整体抗震性能评价。通过本文分析表明,按照试验微粒混凝土材性试验数据,考虑附加质量建立的计算模型,能较好地捕捉到整体结构初始时的频率、振型等动力特性;选择现有的软件确定构件的本构关系,将其输入通用程序进行弹塑性时程分析,能够获得结构的非线性动力反应;通过模型乃至原型结构的弹塑性时程分析,可以对该立面开大洞复杂结构整体抗震性能作出合理评价。
复杂高层, 模型结构, 原型结构, 振动台试验, 弹塑性时程分析, 抗震性能
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周颖, 卢文胜, 吕西林
结构工程师2003(3)/Structural Engineers 2003;(3),-0001,():
-1年11月30日
本文根据振动台模型试验的经验,介绍了模拟地震振动台试验设计的实用流程和设计思路;提出了不用明确求出π数表达式的似量纲分析法,来求解各相似常数;并阐明考虑模型混凝土强度和钢筋强度之间采用不同的相似系数的原则以及模型设计中的一些注意事项。
模拟地震振动台, 相似常数, π数, 似量纲分析法
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周颖, 吕西林, 卢文胜
结构工程师2006年8月第22卷第4期/ Structural Engineers Aug. 2006 Vol.22, No.4,-0001,():
-1年11月30日
为解决在钢筋混凝土结构、钢结构的振动台试验模型中,相似理论与实际模型设计之间的差异问题,以实现对原型结构合理模拟进行的研究,针对不同材料结构按构件等效设计的原则,分别得到钢筋混凝土结构、钢结构模型的设计计算公式,并给出计算实例,以指导振动台试验模型设计。
振动台试验, 模型设计, 模型材料, 钢筋混凝土结构, 钢结构
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周颖, 吕西林
结构工程师2004年12月第20卷第6期/ Structural Engineers Dec. 2004 Vol.20, No.6,-0001,():
-1年11月30日
为建立空腹式劲性钢筋混凝土(LSRC)柱的恢复力模型,本文通过五个LSRC柱的低周反复荷载试验,分析了试验现象和试验机理;以统计同类试验结果为基础,建立了LSRC柱的斜截面抗剪极限点、屈服点等关键点以及延性系数的计算公式;形成了考虑试件轴压比等影响因素的骨架曲线,统计了LSRC柱在低周反复荷载作用下的强度退化、刚度退化、以及滑移等滞回特征,从而构造了LSRC柱的恢复力模型,此模型可用于对结构进行Pushover分析和弹塑性时程反应分析。
空腹式劲性钢筋混凝土(LSRC), 恢复力模型, 骨架曲线, 滞回规律
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