Numerical Study on Dam-Foundation-Dam Interaction

As dams approach the end of their design life periods, retrofitting of dams is needed in many cases. For the retrofitting procedure of building a new dam close to the existing old dam without demolishing it, the interaction between the two dams and the unbounded foundation is an important issue to be investigated. The influence of the existing dam on the dynamic response of the newly built dam is examined. Two systems are analyzed, i.e., the new dam-foundation system and the dam-foundation-dam system. For the two systems, modal analysis and time history analysis using the viscous-spring artificial boundary are performed. It’s found that there’re much more vibration frequencies for the dam-foundation-dam system as compared to the new dam-foundation system within the same frequency range. The existence of the old dam also induces one more peak and a wider plateau in the response spectrum of the acceleration time history of the dam crest. However, the maximum stress distribution is not influenced much by the old dam.

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Application of Earthquake Resistance Analysis Technique in the Design of Constructional Engineering

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.4482 ◽

2013 ◽

Vol 756-759 ◽

pp. 4482-4486

Author(s):

Chun Gan ◽

Xue Song Luo

Keyword(s):

Response Spectrum ◽

Structural Response ◽

Time History ◽

Economic Losses ◽

Element Analysis ◽

Architectural Engineering ◽

Analysis Technique ◽

History Analysis ◽

Earthquake Resistant ◽

History Of

In recent years, frequent earthquakes have caused great casualties and economic losses in China. And in the earthquake, damage of buildings and the collapse is the main reason causing casualties. Therefore, in the design of constructional engineering, a seismicity of architectural structure is the pressing task at issue. Through time history analysis method, this paper analyzes the time history of building structural response and then it predicts the peak response of mode by response spectrum analysis. Based on this, this paper constructs a numerical simulation model for the architecture by using finite element analysis software SATWE. At the same time, this paper also calculates the structure seismic so as to determine the design of each function structure in architectural engineering design and then provides reference for the realization of earthquake-resistant building.

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Review on Seismic Analysis of Multistoried Building in Hilly Region

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.39185 ◽

2021 ◽

Vol 9 (12) ◽

pp. 73-79

Author(s):

Harsh Joshi

Keyword(s):

Seismic Analysis ◽

Response Spectrum ◽

Center Of Mass ◽

Time History ◽

Lateral Loads ◽

Base Shear ◽

Building Frames ◽

Building Frame ◽

History Analysis ◽

Hilly Region

Abstract: Due to sloping land and high seismically active zones, designing and construction of multistory buildings in hilly regions is always a challenge for structural engineers. This review paper focuses to establish a review study on the Possible Types of building frame configuration in the hilly region and he behavior of Such building frames under seismic loading conditions, and (3) The recent research and developments to make such frames less vulnerable to earthquakes. This paper concludes that the dynamics characteristics of such buildings are significantly different in both horizontal and vertical directions, resulting in the center of mass and center of stiffness having eccentricity at point of action and not vertically aligned for different floors. When such frames are subjected to lateral loads, due to eccentricity it generates torsion in the frame. Most of the studies agree that the buildings resting on slanting ground have higher displacement and base shear compared to buildings resting on plain ground and the shorter column attracts more forces and undergoes damage when subjected to earthquake. Keywords: Building frame configuration, Seismic behavior, Dynamic characteristics, Response spectrum analysis, time history analysis.

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Direct Displacement Procedure for Performance-Based Seismic Design of Mid-Rise Wood-Framed Structures

Earthquake Spectra ◽

10.1193/1.3158932 ◽

2009 ◽

Vol 25 (3) ◽

pp. 583-605 ◽

Cited By ~ 18

Author(s):

Wei Chiang Pang ◽

David V. Rosowsky

Keyword(s):

Seismic Design ◽

Response Spectrum ◽

Design Procedure ◽

Time History ◽

Time History Analysis ◽

Nonlinear Time History Analysis ◽

Framed Structures ◽

History Analysis ◽

Performance Based Seismic Design ◽

Nonlinear Time History

This paper presents a direct displacement design (DDD) procedure that can be used for seismic design of multistory wood-framed structures. The proposed procedure is applicable to any pure shear deforming system. The design procedure is a promising design tool for performance-based seismic design since it allows consideration of multiple performance objectives (e.g., damage limitation, safety requirements) without requiring the engineer to perform a complex finite element or nonlinear time-history analysis of the complete structure. A simple procedure based on normalized modal analysis is used to convert the code-specified acceleration response spectrum into a set of interstory drift spectra. These spectra can be used to determine the minimum stiffness required for each floor based on the drift limit requirements. Specific shear walls can then be directly selected from a database of backbone curves. The procedure is illustrated on the design of two three-story ATC-63 archetype buildings, and the results are validated using nonlinear time-history analysis.

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Study on Seismic Performance of Reinforced Concrete Masonry High-Rise Building

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.166-169.2164 ◽

2012 ◽

Vol 166-169 ◽

pp. 2164-2170

Author(s):

Xu Jie Sun ◽

Hou Zhang ◽

Da Gang Lu ◽

Feng Lai Wang

Keyword(s):

Reinforced Concrete ◽

Response Spectrum ◽

Pushover Analysis ◽

Time History ◽

Time History Analysis ◽

Masonry Building ◽

Analysis Method ◽

Concrete Masonry ◽

History Analysis ◽

Earthquake Action

The design process of the 100 m high reinforced concrete masonry building in China was firstly presented, deformation check calculation under earthquake action by mode-superposition response spectrum method and time-history analysis method were detailed and deformation under wind load was also checked. Then elastic-plastic deformation under earthquake action was checked by time-history analysis method and pushover analysis method with both under uniform load and reverse triangle load. The conclusion is construct 100 m high office building built in Fortification intensity 6 by reinforced concrete masonry is feasible. Then the building was redesigned as built in fortification 7, the same check was performed as that have been done in fortification 6, it is feasible too.

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Structural Response and Pounding of Andalas University Hospital Building Using New Indonesian Seismic Code SNI 1726-2012

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.845.274 ◽

2016 ◽

Vol 845 ◽

pp. 274-282

Author(s):

Fauzan ◽

Febrin Anas Ismail ◽

Zev Al Jauhari

Keyword(s):

Response Spectrum ◽

Structural Response ◽

Time History ◽

Analysis Time ◽

University Hospital ◽

Seismic Code ◽

History Analysis ◽

Internal Forces ◽

Hospital Building ◽

Analytical Result

Keywords: Earthquake, Internal Forces, Displacement, Response Spectrum Analysis, Time History Analysis, PoundingAbstract. Teaching Hospital is an educational facilitiy for students in the Faculty of Medicine and also as a health services for the general public. The hospital building must be built in accordance with earthquake-safe building standards, so that buildings are not damaged in an earthquake. Andalas University Hospital was built at Padang in 2014 which was designed using Indonesian Seismic Code SNI 03-1726-2002 with quakes zone 6. Since 2012, a new Seismic Code, SNI 1726-2012, was issued and all the buildings should be designed by using the new code. Therefore, the authors are interested in analyzing the structural response of the hospital building by using new seismic code SNI 1726-2012. The results, then, were compared with the responses of the structure which calculated by using SNI 03-1726-2002.The results of analysis show that the structural responses in the internal forces and displacement by using SNI 1726-2012 was higher than those using SNI 03-1726-2002. In this study, an analysis of potential Pounding was also conducted by using dynamic analysis Time History method. The analytical result shows that there is no pounding between adjacent buildings at Andalas University Hospital Buildings.

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Passive Control of Seismic Response of Piping Systems

Journal of Pressure Vessel Technology ◽

10.1115/1.2217969 ◽

2005 ◽

Vol 128 (3) ◽

pp. 364-369 ◽

Cited By ~ 3

Author(s):

Y. M. Parulekar ◽

G. R. Reddy ◽

K. K. Vaze ◽

K. Muthumani

Keyword(s):

Passive Control ◽

Response Spectrum ◽

Time History ◽

Time History Analysis ◽

Nonlinear Time History Analysis ◽

Equivalent Linearization ◽

Piping System ◽

Equivalent Damping ◽

History Analysis ◽

Piping Systems

Passive energy dissipating devices, such as elastoplastic dampers (EPDs) can be used for eliminating snubbers and reducing the response of piping systems subjected to seismic loads. Cantilever and three-dimensional piping systems were tested with and without EPD on shaker table. Using a finite element model of the piping systems, linear and nonlinear time-history analysis is carried out using Newmark’s time integration technique. Equivalent linearization technique, such as Caughey method, is used to evaluate the equivalent damping of the piping systems supported on elastoplastic damper. An iterative response spectrum method is used for evaluating response of the piping system using this equivalent damping. The analytical maximum response displacement obtained at the elastoplastic damper support for the two piping systems is compared with experimental values and time history analysis values. It has been concluded that the iterative response spectrum technique using Caughey equivalent damping is simple and results in reasonably acceptable response of the piping systems supported on EPD.

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The Comparative Analysis on Calculation Methods of Vertical Seismic Response to Suspended-Dome Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.351-352.849 ◽

2013 ◽

Vol 351-352 ◽

pp. 849-853

Author(s):

Lan Chen ◽

De Long Lu ◽

Xiao Gang Yin

Keyword(s):

Response Spectrum ◽

Time History ◽

Seismic Effect ◽

Time History Analysis ◽

Vertical Acceleration ◽

Analysis Method ◽

Calculation Methods ◽

Acceleration Response ◽

History Analysis ◽

Acceleration Response Spectrum

Based on the vertical seismic information, the vertical seismic response spectrum was calculated by Matlab Lsim function. The seismic effect of Kiewitt-Lamella suspended-dome was measured by dynamic to static ratio. According to the EL-Centro seismic wave, it analyzed and compared the dynamic to static ratios which were calculated by the following four vertical seismic calculation methods respectively: the simplified method of specification, the mode-superposition response spectrum methods based on the horizontal earthquake affecting coefficients and the vertical acceleration response spectrum respectively, and the time history analysis method. Analysis shows that: For the seismic effect, the time history analysis method is larger than the other three methods, and the method based on the vertical acceleration response spectrum is closer to the time history analysis method. Owing to large difference of the four methods for seismic effect, various methods should be adopted to ensure the safety of vertical seismic design.

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Seismic Fragility Analysis of Mid-Story Isolation and Reduction Structures Based Two Directions

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.739.309 ◽

2013 ◽

Vol 739 ◽

pp. 309-313 ◽

Cited By ~ 2

Author(s):

Pei Ju Chang

Keyword(s):

Fragility Curves ◽

Response Spectrum ◽

Time History ◽

Longitudinal Axis ◽

Seismic Intensity ◽

Seismic Fragility ◽

Infill Wall ◽

Intensity Index ◽

History Analysis ◽

Masonry Infill Wall

This study focus on derivation of such fragility curves using classic mid-story isolation and reduction structures (MIRS) in China metropolis. This study focus on derivation of such fragility curves using conventional industrial frames with masonry infill wall. A set of stochastic earthquake waves compatible with the response spectrum of China seismic code selected to represent the variability in ground motion. Dynamic inelastic time history analysis was used to analyze the random sample of structures. MIRS seismic capability of longitudinal and transversal orientation is different. Stochastic damage scatter diagrams based different seismic intensity index are obtained. Seismic fragility of longitudinal axis (Y axis) is larger than transversal axis (X axis) of frames under major earthquake obviously.

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Seven Mega Floor MSCSS Modal Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.2210 ◽

2013 ◽

Vol 353-356 ◽

pp. 2210-2215

Author(s):

Jun Jun Wang ◽

Lu Lu Yi

Keyword(s):

Modal Analysis ◽

Response Spectrum ◽

Time History ◽

Response Analysis ◽

Superposition Method ◽

Response Spectrum Analysis ◽

Mode Superposition Method ◽

History Analysis ◽

Basic Performance ◽

Dynamic Time

Modal analysis is also known as dynamic analysis for mode-superposition method. In the seismic response analysis of linear structural systems, it is one of the most commonly used and the most effective ways. Through the modal analysis of building structure, we can get some basic performance parameters of the structure. These parameters can help us make qualitative judgments for the respond of a structure first, and can help us judge whether they meet demands for conceptual design. Modal analysis is also the basis of other dynamic response analysis, including dynamic time history analysis and response spectrum analysis.

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