نتایج جستجو برای: seismic assessment
تعداد نتایج: 595130 فیلتر نتایج به سال:
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...
A conceptual framework for the probabilistic performance-based seismic assessment of building structures that considers both model uncertainty and response sensitivity to ground motion modification is presented in this paper. A new damage model is proposed for the assessment of building performance to seismic loads. The model is derived at the material level and combined at the element, story a...
Infills can highly influence the seismic response of a Reinforced Concrete (RC) building: generally speaking, their presence leads to an increase in global stiffness and strength, but their brittle behavior can result in an increase of displacement demand if a certain threshold of seismic intensity is overcome. Moreover, presence of infills often leads to a change in the collapse mechanism comp...
Codes for design and constructions of pressure-vessel provide a number of loading conditions that have to be considered. Pressures are primary loadings that are applied either internally or externally over the surface of the vessels; applied forces act either at local points or throughout the mass of the vessel. Among applied loads, inertial forces due to ground motion can be relevant when indu...
The main objective of this research project is to residual deformation and collapse mechanism of structural system and to assess the seismic demand of this system. In this study three major works are developed: a. Develop a physical-based inelastic hysteretic model which contains stiffness and strength degradation, pinching and residual deformation, b. Based on the proposed model the seismic de...
Seismic hazard assessment like many other issues in seismology is a complicated problem, which is due to a variety of parameters affecting the occurrence of an earthquake. Uncertainty, which is a result of vagueness and incompleteness of the data, should be considered in a rational way. Using fuzzy method makes it possible to allow for uncertainties to be considered. Fuzzy inference system,...
Seismic hazard and risk are fundamentally different concepts. Seismic hazard describes phenomena generated by earthquakes that have potential to cause harm, but seismic risk is the likelihood (chance) of experiencing a specified level of seismic hazard in a given time exposure. Seismic hazard occurs naturally and can be evaluated from instrumental, historical, and geological observations. Seism...
this study was conducted to investigate the impact of portfolio assessment as a process-oriented assessment mechanism on iranian efl students’ english writing and its subskills of focus, elaboration, organization, conventions, and vocabulary. out of ninety juniors majoring in english literature and translation at the university of isfahan, sixty one of them who were at the same level of writing...
A 3D marine seismic survey of the Odoptu license area off northeastern Sakhalin Island, Russia, was conducted by DalMorNefteGeofizika (DMNG) on behalf of Exxon Neftegas Limited and the Sakhalin-1 consortium during mid-August through early September 2001. The key environmental issue identified in an environmental impact assessment was protection of the critically endangered western gray whale (E...
dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...
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