Seismic Design and Analysis of Tall Shear Wall-Frame Structure Using Viscous Damping Wall

2013 ◽  
Vol 275-277 ◽  
pp. 1553-1559
Author(s):  
Qiang Zhang ◽  
Wen Guang Liu ◽  
Wen Fu He ◽  
Yang Liu
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Damping Ratio ◽  
Shear Wall ◽  
Frame Structure ◽  
Viscous Damping ◽  
Seismic Region ◽  
Story Drift ◽  
Earthquake Action ◽  
Rare Earthquake

The design and analysis procedures of a viscous damping wall for a tall shear wall-frame structure in a high seismic region are briefly introduced. Design method and theoretical basis of viscous damping wall are described, and then the layout scheme is put forward. Under frequent and rare earthquake action, the analysis results of damping structure show that the responses can be reduced perfectly. The maximum story drift angle of viscous damping structure can satisfy the limitations of the seismic code and the additional damping ratio is increased to 3%, all of them can satisfy the target of damping performance.

Seismic Displacement Design Method Comparison between Chinese, American, European and Japanese Seismic Design Codes

2013 ◽  
Vol 859 ◽  
pp. 43-47
Author(s):  
Gui Ming Zhang ◽  
Wen Feng Liu ◽  
Zhi Hong Chen
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Method Comparison ◽  
Chinese American ◽  
Frame Structure ◽  
Design Codes ◽  
Reinforced Concrete Frame ◽  
Seismic Displacement ◽  
Story Drift ◽  
Earthquake Action

Seismic displacement design method and allowable values of story drift are compared between Chinese, American, European and Japanese seismic design codes. An engineering example's seismic displacement is calculated in the methods given by the four codes, and story drift are compared. Researches show that allowable story drift of Chinese code under rare earthquake action is approximately close to that of American with a 10% probability of exceedance in 50 years, and allowable story drift of Japanese code is more rigorous than other three codes. For three-story three-span reinforced concrete frame structure, in the condition of same intensity, displacement of Chinese under the earthquake action with 2~3% exceeding probability of 50-year is greater than that of American and European with 10% exceeding probability of 50-year. However, intensity plays no role in Japan's displacement calculation, and the calculation result of displacement of Japanese code is less than other three codes.

A Practical Design Method for Energy Dissipation Structure

2012 ◽  
Vol 204-208 ◽  
pp. 1150-1153
Author(s):  
Min Chen ◽  
Guo Jing He ◽  
Chang Liu
Keyword(s):  
Energy Dissipation ◽  
Design Method ◽  
Damping Ratio ◽  
Time History ◽  
Structure Design ◽  
Frame Structure ◽  
Seismic Region ◽  
History Analysis ◽  
Dissipation Structure ◽  
Supplemental Damping

Energy dissipation structure is favored by designers because the earthquake energy can be dissipated by the dampers, which can avoid or reduce the damage caused by earthquake. However, the energy dissipation structure design is complex and the most domestic designers can not master it easily. In this paper, a simple and practicable design method for viscous damper dissipation structure by using the PKPM design software is proposed based on a 7-storey frame structure in highly seismic region. Firstly, lower half or one degree for the design intensity to design out an uncontrolled structure. Secondly, determine the supplemental damping ratio required for the fortification intensity via modal analysis method of PKPM software, and identify the numbers of the required dampers as well as their corresponding installation positions in line with the methods in the seismic code of China. Finally, the ETABS program is adopted to conduct the time-history analysis of the designed dissipation structure, showing that the proposed method in this paper can produce a satisfied result.

Displacement-Based Seismic Design Method of Steel Moment Frame

2012 ◽  
Vol 166-169 ◽  
pp. 640-644
Author(s):  
Qian Zhang ◽  
Ya Feng Yue ◽  
Ergang Xiong
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Steel Frame ◽  
Frame Structure ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
Displacement Based ◽  
Seismic Design Method ◽  
Steel Frame Structure ◽  
Displacement Based Seismic Design

According to lots of documents previously studied, a seismic design method is put forward based on displacement for steel moment frame. This method is established in condition that the yield displacement of steel frame can be determined by its geometrical dimension; then the objective displacement (ultimate displacement) can be determined in light of performance level of the structure, and the corresponding coefficient of ductility can be obtained. Thereafter, the design base shear of steel frame structure can be calculated by the use of reduced elastic spectrum. Thus, the design of stiffness and capacity can be conducted on steel frame structure. The analysis of case study indicates that the displacement-based seismic design method addressed herein is of reasonable safety and reliability, and of operational convenience, which can still realize the seismic design of steel frame structure at different performance levels.

Calculation and Analysis of a Tall Building Seismic Isolation Design

2013 ◽  
Vol 353-356 ◽  
pp. 2177-2180
Author(s):  
Hao Ming Cai ◽  
Zhong Tao ◽  
Xin Li Cao
Keyword(s):  
Seismic Design ◽  
Seismic Isolation ◽  
Time History ◽  
Tall Building ◽  
Wall Structure ◽  
Analysis Method ◽  
History Analysis ◽  
Story Drift ◽  
Rare Earthquake ◽  
Building Project

In this paper, we calculate and analyze a tall building project of seismic isolation design. It is a frame-shear wall structure, which has twelve stories on the ground. And then, we use the time history analysis method to calculate the isolation structure. It is found that isolation equipment can extend the period of the structure, reduce the story drift in frequency earthquake. And it also can control the response of the structure. In rare earthquake, the story drift can meet the demand of unclasped; the displacement and force of the equipment can satisfy the demand of the code for seismic design of building.

The Damage Characteristic Influence and the Seismic Measure Research on the Frame Structure by the Filler Wall

2011 ◽  
Vol 243-249 ◽  
pp. 447-452
Author(s):  
De Jian Yang ◽  
Sai Lan Mao
Keyword(s):  
Adverse Effects ◽  
Seismic Performance ◽  
Design Method ◽  
Shear Wall ◽  
Frame Structure ◽  
Wall Structure ◽  
Related Research ◽  
Weak Layer ◽  
Current Design ◽  
Damage Characteristic

The paper analyses the damages of the frame structure with bottom weak layer considering of Wenchuan earthquake. The analysis result indicates the current design method "pure frame" is imperfect. The related research shows that important reason for the bottom weak layer’s breakage is the stiffness mutation which is caused by the filler wall. If we arranged partial shear wall structure in the bottom weak layer, the adverse effects of stiffness mutation will be decreased, and improve the seismic performance of the frame structure with bottom weak layer.

Effect of Connection Deficiency on Seismic Performance of Precast Concrete Shear Wall-Frame Structures

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940005 ◽  
Author(s):  
Zijian Cao ◽  
Quanwang Li
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Precast Concrete ◽  
Shear Wall ◽  
Frame Structure ◽  
Occurrence Rate ◽  
Point Estimate ◽  
Seismic Reliability ◽  
Point Estimate Method ◽  
Seismic Design Code

The quality of precast concrete (PC) component connections is one of the main factors that affect the seismic reliability of PC structures. China is developing PC structures in high seismic regions, and it is important to assess the effect of connection deficiency on seismic performance of PC structures. This paper presents a comprehensive method to assess the seismic reliability of PC shear wall-frame structure whose wall panels are assembled through grouted sleeve connections which are susceptible to insufficient grouting. Considering the uncertainties associated with the number, locations and loading behavior of defected sleeve connections, the probabilistic behavior of PC shear wall with defected connections is estimated through point estimate method using simulation results of the experiment-validated finite element model. Then, a simple shear wall-frame building, designed for the seismic intensity of 8 according to China’s seismic design code, is modeled on platform of OpenSees. Static pushover analyses and seismic fragility analyses are performed on the structure with different degrees of connection deficiency, to investigate the effect of deficiency occurrence rate on seismic performance. The seismic performance is significantly affected by connection deficiencies; it no longer meets the requirement of seismic design as the deficiency occurrence rate exceeds 25%, so the occurrence rate of defected connections should be controlled carefully in construction site.

The Seismic Performance Analysis of Light Steel Story-Adding on Steel Frame

2014 ◽  
Vol 501-504 ◽  
pp. 1573-1579
Author(s):  
Hao Chen ◽  
Jiu Ping Wei ◽  
Tian Wang ◽  
Ting Ting Ma
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Damping Ratio ◽  
Great Influence ◽  
Steel Structure ◽  
Steel Frame ◽  
Frame Structure ◽  
Irregular Structure ◽  
Holistic Analysis ◽  
Layer Steel

It is common for using light steel structure as an upper layer to alter the multi-layer frame structure. But it is easy to form vertical irregular structure of rigid upper and flexible bottom. And the mass, stiffness, period and damping ratio are change after layer-adding. So it should take a holistic analysis of the structure. By using sap2000 to simulate a two-layer steel frame with a portal frame added, the seismic performance was analyzed. The result shows: transfer floor was relatively weak, it requires attention when seismic design; damping ratio has a great influence to seismic, it should been chose reasonably.

Research of Seismic Design Method of RC Frame Structure Retrofitted by FRP

2014 ◽  
Vol 919-921 ◽  
pp. 1007-1011
Author(s):  
Dian Zhong Yang ◽  
Ya Ping Peng ◽  
Qun Xie
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Engineering Application ◽  
Frame Structure ◽  
Future Research ◽  
Seismic Action ◽  
Rc Frame ◽  
Rc Frame Structure ◽  
Seismic Design Method ◽  
Reinforcement Design

According to the research data and achievements home and abroad, this paper puts forward the practical seismic design process and method of RC frame structure retrofitted by FRP, to promote the application of FRP in the field of RC frame retrofitting. And the ductility design of the column, the reinforcement design of the node area and the structures integral seismic action are discussed, providing a reference for future research and engineering application.

scholarly journals Constant Ductility Site-Specific Yield Point Spectra for Seismic Design

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Duofa Ji ◽  
Weiping Wen ◽  
Changhai Zhai
Keyword(s):  
Yield Point ◽  
Seismic Design ◽  
Iterative Process ◽  
Design Method ◽  
Damping Ratio ◽  
Prediction Equation ◽  
Specific Yield ◽  
Stiffness Ratio ◽  
Vibration Period ◽  
Strength And Stiffness

Displacement-based seismic design (DBSD) is an iterative process because the strength and stiffness of a structure are needed to be adjusted in order to achieve a specific performance level, which is extremely inconvenient for designers in practice. Yield point spectra-based seismic design is treated as an alternative design method in which yield displacement as a basic parameter will not lead to an iterative process even though the lateral strength or stiffness of a structure changes during the whole design process. Along this line, this study focuses on investigating the yield point spectra (YPS) for structures located at different soil sites. YPS are computed for EPP systems under 601 earthquake ground motions. YPS for four soil sites are quantitatively analyzed by considering the influence of the vibration period, ductility factor, damping ratio, postyield stiffness ratio, and P-delta effect. The results indicate that compared with the effects of the damping ratio, the effects of the postyield stiffness ratio and P-delta effect on YPS are more profound. Finally, a prediction equation is proposed accounting for four soil sites and six ductility factors.

Applied Research of the Steel Frame-Shear Wall System in the Primary and Secondary Schools

2013 ◽  
Vol 671-674 ◽  
pp. 1335-1340
Author(s):  
Mo Zhu ◽  
Zhong Tao ◽  
Min Zhang ◽  
Ling Xu Li
Keyword(s):  
Applied Research ◽  
Stress Ratio ◽  
Shear Wall ◽  
Steel Frame ◽  
Wall Structure ◽  
Disaster Prevention ◽  
Seismic Region ◽  
Story Drift ◽  
Overturning Moment ◽  
Wall System

Steel frame - shear wall structure of the teaching building has been by the software PKPM respectively in the design basic acceleration of ground motion of 7~9 degrees, include story drift, component stress, overturning moment and the amount of steel. Comparative analysis shows that the main factors affect the stress ratio is related to the sectional dimension, and has little to do with the intensity. By calculating the overturning moment, it proved that in 9 degree 0.4g and 8 degree 0.3g, the frame with shear wall structure combined with a relatively close. The structure not only meeting the earthquake disaster prevention requirements of the teaching building in highly seismic region, but also the structure has good economic applicability.

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