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.
Results
Showing 1 to 13 of 13 for “"Seismic codes"”.
-
Quantifying Seismic Risk for Portable Ground Support Equipment at Vandenberg Air Force Base
… develops a quantitative method to evaluate the seismic risk for portable GSE at Vandenberg Air Force Base. Using the latest probability data available from the USGS, risk thresholds are defined for portable GSE having the potential to cause a catastrophic event. Additionally, an example tool for …
-
Evaluation of Strength Reduction Factor for Concentrically Braced Frames Based on Nonlinear Single Degree-of-Freedom Systems
… design of lateral force resisting systems under seismic loading. R-Factors allow for a reduction in design base shear demands, leading to more economical designs. The reduction of strength is remedied with ductile behavior in members of proper detailing. Modern seismic codes and provisions …
-
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 …
-
Inelastic seismic behavior of stiffening systems : multi-span simply-supported (MSSS) bridges
… consistent with pushover analysis based on the seismic codes. However, considering many other damage indices like dissipated hysteretic energy and low-cycle fatigue damage index, it is quite likely that a stiffening system would sustain more damage than an elastic-plastic system. At the end, …
-
Development of a Comprehensive Linear Response History Analysis Procedure for Seismic Load Analysis
… the American Standard ASCE-7 as well as in other seismic codes. It presents a detailed analysis of the variables influencing the scaling of ground motions, and it suggests a new scaling technique for linear response history analysis. The assumptions made establishing the flexibility of the …
-
Method of reliability-based calibration of seismic structural design parameters
Structural design under seismic load requires proper consideration of uncertainties associated with loads and resistance as well as the limited ability of analytical models to describe the response of a structure. To account for these uncertainties, the design parameters in current seismic codes …
-
Estimation of Earthquake Input Energy, Hysteretic Energy and its Distribution in MDOF Structures
<p>Current seismic codes for building design often utilize a force or a displacement-based approach in their implementation. In a force-based approach, a structure is designed to ensure it possesses sufficient strength to resist the maximum forces imparted to it by an earthquake. In a …
-
Stochastic model for the simulation of synthetic main shock-aftershock ground motion sequences
According to the current seismic codes, structures are designed to resist the first damaging earthquake during their service life. However, after a strong main shock, a structure may still face damaging aftershocks. The main shock-aftershock sequence may result in major damage and eventually the …
-
Numerical Analysis of Human-Informed Topology Optimized Lateral-Load-Resisting Systems of Tall Buildings under Seismic Excitation
… similar to how structures are analyzed in seismic codes. The designs are evaluated quantitatively, comparing natural periods, modal displacements, sum of modal compliances using modal decomposition, as well as computation time. They are also evaluated qualitatively, as HiTop is used to …
-
Modelling the Post-Peak Response of Existing Reinforced Concrete Frame Structures Subjected to Seismic Loading
… designed according to older, less stringent seismic codes are often vulnerable to shear or flexure-shear failure followed by axial failure. Thus, such substandard R/C structures are susceptible to vertical collapse, which pertains to the exceedance of vertical resistance of columns and …
-
Integrated seismic assessment and design of plan-irregular structures
… of plan-irregular structures requires advanced seismic assessment and design guidelines which address torsional effects. This study aims to provide advanced and improved seismic assessment and design guidelines for plan-irregular structures. Furthermore, this study aims to develop an integrated …
-
Analysis of Code Procedures for Seismic Assessment of Existing Buildings: Italian Seismic Code, EC8, ATC-40, FEMA356, FEMA440
… of damage in existing buildings located in seismic regions. This vulnerability has been attributed to several reasons, such as insufficient strength and stiffness, poor detailing, irregularities in plan and elevation, domination of brittle failure modes over ductile ones, etc. On account of …
-
ΔΙΕΡΕΥΝΗΣΗ ΤΗΣ ΑΝΕΛΑΣΤΙΚΗΣ ΣΕΙΣΜΙΚΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΠΟΛΥΟΡΟΦΩΝ ΚΤΙΡΙΩΝ ΑΠΟ ΟΠΛΙΣΜΕΝΟ ΣΚΥΡΟΔΕΜΑ
… THAT THE DESIGN CODE PHILOSOPHY HAS ON THE SEISMIC BEHAVIOUR OF R/C BUILDING STRUCTURE. THE CODES CONSIDERED INCLUDE THE CURRENT GREEK CODES, AS WELL AS THE CEB-FIP MODEL CODES FOR THE DESIGN OF CONCRETE STRUCTURES (UNDER NORMAL AND SEISMIC LOADING). R/C FRAME STRUCTURES, AS WELL AS DUAL …