نتایج جستجو برای: seismic hazard level

تعداد نتایج: 1169261  

Journal: :Nucleation and Atmospheric Aerosols 2021

Bengkulu City is an area in Indonesia that has a high seismic intensity. This very vulnerable to undergo earthquakes. Therefore, there necessity study the hazard assessment this area. paper presents vulnerability based on ground response analysis combined with probabilistic assessment. The soil profiles around are investigated using geophysical survey by microtremor and analysis. motion of soft...

2015
Brendon A Bradley Lynne S Burks Jack W Baker

This paper examines four methods by which ground motions can be selected for dynamic seismic response analyses of engineered systems when the underlying seismic hazard is quantified via ground motion simulation rather than empirical ground motion prediction equations. Even with simulation-based seismic hazard, a ground motion selection process is still required in order to extract a small numbe...

Journal: :فیزیک زمین و فضا 0
الهام بوستان استادیار، گروه زمین شناسی دانشگاه آزاد اسلامی واحد کرج، ایران نوربخش میرزائی دانشیار، مؤسسه ژئوفیزیک دانشگاه تهران، ایران مرتضی اسکندری قادی دانشیار، گروه علوم پایه مهندسی دانشکده فنی دانشگاه تهران ، ایران علی شفیعی استادیار، پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله، تهران، ایران

seismic hazard assessment like many other issues in seismology is a complicated problem, which is due to variety of parameters affecting the occurrence of earthquake. uncertainty, which is a result of vagueness and incompleteness of the data, should be considered in a rationale way. herein, fuzzy set theory is used to take into account the uncertainty existed in the seismic hazard analysis. the...

2004
I. D. Gupta

The seismic hazard analysis is concerned with getting an estimate of the strong-motion parameters at a site for the purpose of earthquake resistant design or seismic safety assessment. For generalized applications, seismic hazard analysis can also be used to prepare macro or micro zoning maps of an area by estimating the strong-motion parameters for a closely spaced grid of sites. Two basic met...

2017

Submit Manuscript | http://medcraveonline.com Abbreviations: EQ: Earthquake; CS: Complex System; AE: Acoustic Emission; ETAS: Epidemic-Type Aftershock Sequence; B-G: Boltzman-Gibbs; PSHA: Probabilistic Seismic Hazard Analysis; SHA: Seismic Hazard Assessment; SOC: Self-Organized Criticality; NESM: Non-Extensive Statistical Mechanics; IFS: Iterated Function Systems; RP: Recurrent Plots; RQA: Recu...

2014
A. Kamali Asl

Seismic hazard analysis of vulnerable countries on the Alpine-Himalayan belt has great importance to be considered. Recently, Iran as one of the countries located on the stated belt has experienced a few number of severe earthquakes. A wellestablished index of how earthquakes affect buildings is by assessing probable Peak Ground Acceleration (PGA) which can be estimated by past events. For this...

According to Iranian code of practice for seismic resistant design of buildings standard No. 2800, Yazd is located in the place with the medium earthquake hazard [1]. Due to the position of Yazd with many historical and important buildings, maintaining these traditional heritages is an important task in civil engineering field. On account of these mentioned valuable buildings and region potenti...

H.E. Estekanchi, M. Mashayekhi,

Endurance Time Method (ET) is a dynamic analysis in which structures are subjected to intensifying accelerograms that are optimized in a way that seismic performance of structures can be estimated at different hazard levels with the best possible accuracy. For the currently available ET accelerograms, regardless of the shaking characteristic, an excitation level is recognized as a representativ...

2007
Giuliano Augusti Marcello Ciampoli

Performance-based design is an efficient strategy for assessing and reducing the risk that a construction violates some performance requirement. In this paper, a procedure for performance-based assessment of seismic risk is illustrated with reference to a composite steel-concrete frame structure. Such risk is conventionally evaluated in a simplified formulation, i.e. as the mean annual frequenc...

2015
Yu Dang Jianping Han Yongtao Li

This paper proposes an indicator of seismic performance based on life-cycle cost of a building. It is expressed as a ratio of lifetime damage loss to life-cycle cost and determines the seismic performance of isolated buildings. Major factors are considered, including uncertainty in hazard demand and structural capacity, initial costs, and expected loss during earthquakes. Thus, a high indicator...

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