Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"Seismic Analysis"”.
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Dynamic simulation tool for seismic analysis
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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Seismic analysis of inclined shallow granular deposits
In the last decades many attempts for understanding the cyclic and dynamic behaviour of soft soils have been devoted by the scientific community. The aim of this thesis consists to investigate the mechanical response of two granular material (Hostun and Toyoura sand) in cyclic/dynamic conditions. …
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Seismic analysis of pipelines with yielding supports
… separately when the structure is subjected to seismic type loading. The pipeline is modelled with various types of supports, such as a rigid support or an elastic support. The pipeline is analysed and designed so that stresses in the pipeline and at the supports are acceptable. When the …
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Seismic analysis of a large size underground cavern
… Then a systematic approach for the dynamic analysis of large size underground openings such as powerhouses and hydroelectric caverns is presented.
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Seismic Analysis and Assessment of Historic Unreinforced Masonry Structures
… which include heritage construction to seismic hazards.
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Seismic Analysis and Response of Highway Bridges with Hybrid Isolation
… is proposed as an alternative to (full) seismic isolation for minimizing bridge damage in strong earthquakes. In this technique isolators are only used at the abutments, and monolithic or pinned connections remain at the piers. Both full and hybrid isolation can be shown to reduce the …
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Improved seismic analysis of unreinforced masonry buildings with flexible diaphragms
… challenge for the assessment of their seismic vulnerability. When diaphragms are flexible, different parts of a structure can interact with each other dynamically, in a way not typically encountered in modern structures with rigid diaphragms. As a result, the seismic analysis methods …
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Effective Width of Floor Systems for Application in Seismic Analysis
… floor systems have been developed for use in the analysis of frames subjected to lateral seismic loads. The results cover a wide range of the governing nondimensional parameters, and are applicable to floor slabs with supporting beams as well as to flat slabs.
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Seismic Analysis and Isolation Strategies for Spent Fuel Dry Storage Cask Systems
… and insightful investigation into the long-term seismic safety of spent nuclear fuel dry storage casks (DSCs) and their internal fuel components. It underscores the critical need for robust containment of radioactive materials over extended operational periods to prevent damage and mitigate any …
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Seismic Analysis of a United States Navy Structure Using Finite Element Modeling
… to disengage from the structure due to seismic activity. A concern about the seismic loading of the structure was raised by an inspection team. The concern was that, in the event of an earthquake, the lifting rod would disengage from the structure due to vertical seismic actions. In …
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Nonlinear seismic analysis of quasi-isolation systems for earthquake protection of bridges
Quasi-isolation is a modern bridge seismic design philosophy where nonlinearity is permitted to occur in specific bearing components such that forces transferred into the substructure are reduced and isolation is achieved by sliding of the bearings. The system is a pragmatic approach for providing …
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An analytical model for the seismic analysis of reinforced concrete frame structures
… The implementation of the model into a frame analysis computer program is discussed. Special attention is devoted to the solution strategies and numerical algorithms employed in the computer program. The model is shown to perform satisfactorily when compared to experimental results. A …
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Seismic analysis and an improved seismic design procedure for gravity retaining walls
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1982.
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Seismic analysis of Fire Station No. One: a historic unreinforced masonry building
Recent seismic events have confirmed the long-standing belief that unreinforced masonry structures are critically vulnerable to failure during earthquakes. A substantial number of older structures in the United States have unreinforced masonry construction. Among these are important historic …
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Assessment of modeling sensitivity for nonlinear seismic analysis of highway bridges in Illinois
… Highway and Transportation Officials (AASHTO) seismic provisions were updated in 2008. These provisions increased the design earthquake return period from 500 to 1000 years, eventually demanding special structural systems to counteract seismic forces and therefore increasing construction costs. …
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Frequency- and pressure-dependent dynamic soil properties for seismic analysis of deep sites
… dependent. Using a modified linear iterative analysis with frequency- and depth-dependent moduli and attenuation, a 1-km deep model for the Mississippi embayment near Memphis, Tennessee, is successfully analyzed. The seismograms computed at the surface not only satisfy causality (which cannot …
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Exact modal synthesis methods for seismic analysis of primary and multiply supported secondary systems
… obtained via a second order matrix perturbation analysis of the algebraic eigenvalue problems. Once the eigenvalues are known, the eigenvectors can be calculated with closed-form expressions without solving any simultaneous equations. Several variants of the methods are developed to consider …
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