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.

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.

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.

The influence of construction joint on the seismic behavior of reinforced concrete frame structure

2016 ◽  
Vol 20 (7) ◽  
pp. 1125-1138 ◽  
Author(s):  
Jing Yu ◽  
Xiaojun Liu ◽  
Xingwen Liang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Behavior ◽  
Numerical Models ◽  
Time History ◽  
Frame Structure ◽  
Nonlinear Time History Analysis ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Construction Joint ◽  
Story Drift

A new model that can simulate the behavior of construction joint subjected to seismic forces was proposed. Nonlinear time-history analysis was carried out for reinforced concrete regular frame structures designed in different seismic intensity regions as well as with different height-to-width ratios. Two kinds of numerical models are adopted to simulate the seismic behavior of each frame, one with construction joint using the new proposed model and the other without construction joint using the conventional model. Results show that the influence of construction joint on the seismic behavior of reinforced concrete frame is strongly related to structural nonlinearity. It may increase the top displacement and the inter-story drift, change the inter-story drift distributions, and exacerbated the local reaction of key members. The influence of construction joint cannot be ignored for structures with low emergency capacity against major earthquake. Seismic design suggestions are proposed from the aspect of calculation analysis method.

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.

Push-over Analysis on the Failure Mechanism of Reinforced Concrete Frame Structure

2013 ◽  
Vol 663 ◽  
pp. 42-48
Author(s):  
Tie Cheng Wang ◽  
Xiao Hui Gu ◽  
Hai Long Zhao
Keyword(s):  
Reinforced Concrete ◽  
Failure Mechanism ◽  
Constitutive Relations ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Plastic Hinges ◽  
Concrete Frame ◽  
Weak Beam ◽  
Story Drift ◽  
Height Increase

A reinforced concrete frame model was designed by PKPM software and then a push-over analysis is performed in this paper. Values of plastic hinges were calculated by Section Builder software, which based on constitutive relations of material and the section forms, then the data was written into corresponding components in the model to carry out push-over analysis. The plastic hinges first appeared at the ends of beams in the first story ,spread to the second story and the ends of columns in the first story. At last plastic hinges spread to the top story. The story drift and interstory displacement rotation of the model in different cases tended to decrease as structural height increase. It can be demonstrated that failure mechanism satisfies the design requirements of strong column weak beam.

scholarly journals Seismic Behavior of Turbine-Generator Foundation under Strong Earthquake Action in Different Directions

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Dong An ◽  
Tie-jun Qu
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Seismic Behavior ◽  
Turbine Generator ◽  
Maximum Displacement ◽  
Scaled Model ◽  
Seismic Displacement ◽  
Limit Value ◽  
Seismic Design Code ◽  
Story Drift

In order to study seismic behavior of half-speed turbine-generator foundation under horizontal earthquake loading in different directions, the 1/10 scaled model was designed and fabricated. The rigid foundation of half-speed turbine-generator sets can be seen as a complex space frame system. The tests were conducted under eight earthquake waves in two directions separately. The loading directions were along the axis of longitudinal and transverse. The seismic response of displacement and story drift was investigated by a pseudodynamic test. The hysteresis behavior and crack propagation were analyzed. From the research, it is shown that the maximum displacement of the foundation under the earthquake of intensity 7 is 15.20 mm (longitudinal), basically in the range of elastic deformation. The seismic response of earthquake input in different directions is obviously different. Under the same earthquake input, the seismic displacement along the axis of longitudinal is larger than that of transverse. Under the rarely earthquake of intensity 8, the foundation still keeps good working condition. The maximum elastic-plastic story drift is 1/191 under the limit value 1/50 provided in the Code for Seismic Design of Buildings. The deformation capacity of the structure meets the requirements of the current seismic design code of China.

Based on ANSYS Buckling-Restrained Brace Frame Structure Shock Absorption Analysis

2013 ◽  
Vol 477-478 ◽  
pp. 651-654
Author(s):  
Li Jun He ◽  
Yong Yao ◽  
Yun Peng Chu
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Structural Damage ◽  
Structural Response ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Story Drift ◽  
Design Earthquake ◽  
Rare Earthquake

Whether the design of new structure or reinforcement of the existing projects, structure earthquakereduction design is always the focus of research at home and abroad. The buckling restrained braces won the unanimous endorsement of the engineering sector with good energy dissipation capacity and simpleeasy construction process. This Paper based on the ANSYS analysis the structural response through simulated the bucklingrestrained brace frame structure and the general reinforced concrete frame on effect of the rare earthquake or design earthquake, and analysis the bucklingrestrained braces on the seismic performance of reinforced concrete frame structure. The analysis results show that the seismic performance of reinforced concrete frame with bucklingrestrained braces well, it can effectively reduce the maximum story drift and control structural damage. Therefore, Bucklingrestrained Brace should be used extensively to reinforced concrete framework .

Multi-Target Optimization Design of Earthquake-Resistant Structure Taking Ductility and Cost into Account

2010 ◽  
Vol 163-167 ◽  
pp. 2415-2419 ◽  
Author(s):  
Hong Sheng Zhao ◽  
Hui Ji
Keyword(s):  
Reinforced Concrete ◽  
Structural Design ◽  
Optimization Design ◽  
Design Method ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Earthquake Resistant ◽  
Reinforced Concrete Frame Structure ◽  
Design Result

Using the conventional structural design methods, the design result is usually not the most economical and the most reasonable. While, using the single target structural optimization design method, duo to the only one target function to be optimized, the design result often can not meet with the multiple requirements of structural designing, furthermore its optimizing efficiency is low. So its application is limited. This paper proposes multi-target earthquake-resistant optimization design method for reinforced concrete frame structure under earthquake loading. In the optimization design approach, the ductility and cost which are two factors contradictory each other in structure designing are simultaneously taken as the target functions, and the function relation formula between them has been established, giving simultaneous consideration to the structural economy, safety and practicability. Using this design approach, the optimum cross-sectional dimensions, with the largest ductility and the lowest cost, of the reinforced concrete frame structure which is optimized under earthquake loading, can be obtained by computer. The practical examples of structure design, which have been optimized by using this approach, show that the cost of construction has been cut down by about 10% comparing with the conventional designing. The optimization process presented in this paper conforms entirely to the China national standards: “Code for Design of Reinforced Concrete Structures” (GB50010-2002) and “Code for Earthquake-resistant Design of Buildings” (GB50011). The theory and methods presented in this paper, having not only their theory meanings but their practical values, will be helpful for the structural design engineers and the researchers.

scholarly journals Refined Seismic Design Method for RC Frame Structures to Increase the Collapse Resistant Capacity

2020 ◽  
Vol 10 (22) ◽  
pp. 8230
Author(s):  
Mengmeng Gao ◽  
Shuang Li
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Frame Structure ◽  
Elastic Response ◽  
Frame Structures ◽  
Rc Frame ◽  
Structural Collapse ◽  
Damage State ◽  
Rc Frame Structures ◽  
Seismic Design Method

In current structural design codes, elastic vibration modes are used for seismic design. However, when a structure is subjected to strong earthquakes and inelastic response or even when collapse damage is observed, the damage state is always unevenly distributed along the height of the structure. Such a phenomenon implies the materials of stories with elastic response and slight damage are not fully utilized. In this paper, a new practical and effective method, which improves collapse resistant capacity by making full use of materials, is proposed for reinforcement concrete (RC) frame structures at a structural collapse state. In this method, incremental dynamic analysis (IDA) is used to evaluate the structural collapse capacity. Tangent_ratio (TR) is formulated based on the IDA curves, and the longitudinal reinforcement of columns is modified based on the TR to achieve uniform distribution of damage along the height of building. Fewer variables are optimized and constraints of the provisions in current codes are considered, which makes the proposed procedure more computationally efficient and practical. The proposed method is employed on a 5-story RC frame structure to illustrate its feasibility and practicality. Comparison work indicates that the refined seismic design method can significantly increase the collapse resistant capacity and decrease the maximum inter-story drift ratio response under strong ground motion in a few iterative steps without a cost increase.

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