Seismic Analysis on the Large Span Exchanging Building

2012 ◽  
Vol 256-259 ◽  
pp. 784-787
Author(s):  
Hai Yan Lin
Keyword(s):  
Seismic Performance ◽  
Seismic Analysis ◽  
Frame Structure ◽  
Original Structure ◽  
Functional Requirements ◽  
Regulatory Requirements ◽  
Large Space ◽  
Large Span ◽  
Irregular Structure ◽  
Conference Center

The conference center of the original structure of the frame structure, the ground floors.Now transform the functional requirements to construction, pumping column to the top of the structure to form a large space,Causing the vertical elements intermittent floors stiffness mutation irregular structure system.The basis for reinforced superstructure using SATWE conducted a multi-case earthquake under Elastic Compute using SAP elastoplastic analysis for validation.The analysis results show that the irregular structure, when reasonable structural arrangement, to take appropriate structural measures, the seismic performance to meet the regulatory requirements.

Study on Earthquake Resistant Performance of a Large Span Structure Strengthened with HADAS

2013 ◽  
Vol 405-408 ◽  
pp. 933-939
Author(s):  
Dai Guo Chen ◽  
Yong Yao ◽  
Yong Jun Deng ◽  
Hai Jun Wang
Keyword(s):  
Seismic Performance ◽  
Plastic Hinge ◽  
Large Earthquake ◽  
Internal Force ◽  
Weak Links ◽  
Original Structure ◽  
Large Span ◽  
Before And After ◽  
Under Construction ◽  
Rare Earthquake

Seismic fortification intensity has been adjusted in some areas which were affected in The Wenchuan-earthquake. It was seismic strengthening for most of the buildings especially the public buildings after the adjustment. In order to ensure the seismic performance of the structure after reinforcement ,the analysis method based on performance is gradually applied in the large and complex engineering structure analysis .The paper uses a large span Sports Training Center under construction as background. According to the situation that the fortification intensity by 6 degrees improved to 7 degrees ,the paper uses Push-over method to analysis elastic-plastic of the finite element models ,which including the mild steel damper before and after reinforcement ,under the action of the rare earthquake of 7 degrees. The paper is studying the internal force,deformation and destruction of the structure in the action of the rare earthquake,comparing the dynamic characteristics and seismic performance of the models, and researching distribution of weak links and plastic hinge of the models under the large earthquake. The results show that the models can meet collapse resistant checks less than 7 degrees of the rare earthquake before and after reinforcement. The second floor is relatively weak of the original structure,and can emerge local damage easily. But the structures stiffness is more uniformly after reinforcement, and has large resistance of the collapsed ability.

Analysis on Reinforcement and Design of a Historic Building Retrofitting Project

2013 ◽  
Vol 671-674 ◽  
pp. 622-625
Author(s):  
Ming Liu ◽  
Xin Hai Fan ◽  
Lin Liu
Keyword(s):  
Seismic Performance ◽  
Frame Structure ◽  
Original Structure ◽  
Construction Process ◽  
Exterior Wall ◽  
Historic Building ◽  
Retaining Structure ◽  
Concrete Frame ◽  
Reinforcement Design ◽  
Design And Construction

Retrofitting and reinforcement project of a historic hotel building are introduced in article. The method of increasing new concrete frame structure in original structure interior and the original exterior wall considered as a retaining structure was adopted in the retrofitting and reinforcement project. The structure subjecting to the force was clear and the reinforcement construction process was relatively simple after the retrofitting and reinforcement. Design and construction of the structure strengthened are according to the existing code completely and can ensure the safety and the seismic performance of the structure.

Performance-Based Seismic Analysis of Infilled Wall Frames Structure

2012 ◽  
Vol 226-228 ◽  
pp. 1132-1135
Author(s):  
Shu He Wang ◽  
Jin Long Wang ◽  
Zai Gen Mu ◽  
Ju Bing Zhang ◽  
Ya Ting Liu
Keyword(s):  
Seismic Performance ◽  
Performance Index ◽  
Seismic Analysis ◽  
Element Model ◽  
Paper Analysis ◽  
Frame Structure ◽  
Wall Structure ◽  
Brick Wall ◽  
Displacement Angle ◽  
Earthquake Action

In the practical engineer, the infilled-wall frame structure is widely used by its economy and applicability. Under the project research, the paper establishes a finite element model for infilled-brick-wall structure based on the infilled-wall frame structure performance and after Pushover's analyses,it obtains the inter-story displacement angle, which is anti-seismic performance index to the point each floor of the infilled-wall structure under the different earthquake action . The paper analysis and assesses the infilled-wall frame structure anti-seismic performance based on the anti-seismic performance index and it provides a reference and basis for anti-seismic standard's development towards based-performance direction.

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 on Aseismatic Reinforcement of a Frame Structure Energy Dissipation and Shock Absorption

2011 ◽  
Vol 255-260 ◽  
pp. 2492-2495
Author(s):  
Hui Ji ◽  
Hong Sheng Zhao
Keyword(s):  
Seismic Performance ◽  
Structural Design ◽  
Simulation Analysis ◽  
Dynamic Performance ◽  
Frame Structure ◽  
Original Structure ◽  
Friction Damper ◽  
Earthquake Intensity ◽  
Design Engineers ◽  
Structure Simulation

This paper presents a seismic reinforcement approach to a frame structure, which was added from four-storey to six-storey, and is located at degree-8 earthquake intensity zone and type-II site, by using the Friction Damper. Firstly, the dynamic performance of the original structure had been tested and the performance parameters had been gotten, which were used to build up the F.E. model and to check its accuracy. Secondly, the structure simulation analysis was conducted by using the constructed F.E. model. Finally, the seismic strengthening of the frame structure being added to six-story was analyzed and calculated by using Friction Damper. This has effectively improved the structure seismic performance and the seismic performance of the reinforced structure meets well with the seismic code requirements. This approach will be helpful for the structural design engineers and the researchers.

Study on Rational Ratios of Lateral Stiffness for Masonry Building with Frame Structure at First Two Stories

2012 ◽  
Vol 174-177 ◽  
pp. 2012-2015
Author(s):  
Xiao Long Zhou ◽  
Ying Min Li ◽  
Lin Bo Song ◽  
Qian Tan
Keyword(s):  
Seismic Performance ◽  
Time History ◽  
Shear Wall ◽  
Calculation Model ◽  
Frame Structure ◽  
Wall Structure ◽  
Masonry Building ◽  
Lateral Stiffness ◽  
Stiffness Ratio ◽  
Lateral Stiffness Ratio

There are two typical seismic damage characteristics to the masonry building with frame shear wall structure at first two stories, and the lateral stiffness ratio of the third storey to the second storey is one of the key factors mostly affecting the seismic performance of this kind of building. However, some factors are not considered sufficiently in current Chinese seismic codes. According to the theory of performance-based seismic design, the seismic performance of this kind of structure is analyzed in this paper by taking time-history analysis on models which with different storey stiffness ratios. The results show that when the lateral stiffness ratio controlled in a reasonable range, the upper masonry deformation can be ensured in a range of elastic roughly, and the bottom frame can be guaranteed to have sufficient deformation and energy dissipation capacity. Finally, according to the seismic performance characteristics of masonry building with frame shear wall structure at first two stories, especially the characteristics under strong earthquakes, a method of simplified calculation model for the upper masonry is discussed in this paper.

Analysis on the Seismic Behavior of Extended End-Plate Connections of Steel Frame Structure

2012 ◽  
Vol 193-194 ◽  
pp. 1405-1413 ◽  
Author(s):  
Zhu Ling Yan ◽  
Bao Long Cui ◽  
Ke Zhang
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Frame Structure ◽  
End Plate ◽  
Rigid Connection ◽  
Extended End Plate ◽  
Plate Connections ◽  
Steel Frame Structure

This paper conducts analysis on beam-column extended end-plate semi-rigid connection joint concerning monotonic loading and cyclic loading of finite element through ANSYS program, mainly discussed the influence of parameters such as the form of end plate stiffening rib on anti-seismic performance of joint.

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