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Seismic Analysis Articles & Analysis
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We’ve currently published a publication which comes back to a relationship between attenuation and velocity dispersion of body waves which replaces the measurement of the amplitude characteristics of seismic signals by a frequency dependent velocity function. The implementation of this method has previously shown to be difficult because of the very small levels of ...
We’ve currently published a publication which comes back to a relationship between attenuation and velocity dispersion of body waves which replaces the measurement of the amplitude characteristics of seismic signals by a frequency dependent velocity function. The implementation of this method has previously shown to be difficult because of the very small levels of ...
Project Description The Udhampur-Srinagar-Baramulla Rail Link (USBRL) project is a railway line linking the Kashmir Valley to the rest of India through the Himalayas. At 110 km long, this section consists of 88 km through tunnels and 11 km over bridges and viaducts. The Chenab River Bridge will be a concrete-filled truss steel arch bridge 359 m above the river valley, with a main span of 467 m ...
The building is supported by piers extending all the way into the Franciscan Complex bedrock. A nonlinear seismic soil-structure interaction analysis was required to estimate racking displacements, in-structure response, and load on the west wall due to any lateral soil spreading. ...
Project Description As part of evaluation of seismic performance of this 175-foot high hydraulic fill dam located at a confidential site in the southeast Appalachia region, Geosyntec hired Itasca Consulting Group (Itasca) to perform deformation analyses for seismic loading of the dam using numerical modeling. Prior to the deformation analyses, Itasca also assisted Geosyntec with numerical ...
Strata’s innovative solution After critical analysis of the site, Strata’s technical team of civil engineers designed an innovative and the most appropriate solution- the StrataSlope System (geogrid-reinforced steep slopes with wire-basket facing). ...
Preliminary results from the stimulation were presented at the American Geophysical Union Annual Meeting in December, and the poster summary from the meeting can be found here: (link AGU poster). The analysis of the pressure, flow, seismicity and water data will continue over the next few months. The reports generated from the dataset will inform planning, ...
Dampers are the first elements in structures which respond to seismic forces, prevent from destructive damage to other main elements of structure and reduce the costs related to structural improvement. ...
In the following, seven near–field signals scaled in agreement with the design spectrum of the Italian code (NTC, 2008) have been adopted to perform a nonlinear analysis on a six–story frame. The response has also been determined for the same frame protected once with hysteretic–type energy dissipaters and once with base isolators. The aim of the present study is to acquire ...
In this paper, attention is focused on the modelling and nonlinear seismic analysis of framed structures equipped with friction, metallic yielding, viscoelastic and viscous dampers. A design procedure is proposed for proportioning damped braces in order to attain, for a specific level of seismic intensity, a designated performance level of the ...
In assessing the safety of existing buildings, the specific actions dedicated to the knowledge of the structure delineate the parameters of the linear or non–linear analysis aimed at identifying the most appropriate structural intervention. In this context, the present paper collects the seismic analysis of a school building in reinforced ...
In Japan, earthquake resistance improvement (earthquake proofing) of drinking water infrastructure is not as developed as for other types of infrastructure such as gas and electricity. To facilitate earthquake proofing, it is important for water utilities to encourage customers to better understand its importance and effectiveness. So that water consumers could instinctively understand the ...
As part of the geotechnical study, GeoView, Spotlight Geophysics and ATI Panamericana were tasked to provide seismic P-wave and S-wave velocity structure of the subsurface. The consortium collected seismic refraction and multi-channel analysis of surface waves (MASW) data along survey transects approximately 4 kilometers in length. ...
Pipeline generally extends over long distances traversing through wide variety of different soils, geological conditions and regions with different seismicity. Most analytical models developed in the past for pipeline fault crossing are of limited usage as models developed were useful only for strike slip fault. ...
The main purpose of this study is to propose an evaluation method that can be used for analysing the time–dependent seismic reliability of reinforced concrete (RC) buildings located in a corrosive environment with high seismic hazard. ...
Keywords: earthquake damage investigations, response spectra, ground motion levels, forensic engineering, seismology, GMPE, ground motion prediction equations, seismic intensity, structural analysis, expert witnesses, epistemic uncertainty, Bayesian updating, structural failure, legal disputes, structural design, poor design, poor construction, common ...
Increases in usable landfill volume can be achievedwhen side slopes are steepened with geosynthetic reinforcement. Stability analysis was performed using currently available design programs which analyzed internal stability, compound stability, direct sliding and deep seated analysis. Seismic stability analysis was also ...
Two interior connections, representing the first floor column and beam sizes, were tested under cyclic loading to evaluate the effects of energy dissipation and PT load and on the seismic behaviour. A full–scale one–story two–bay specimen frame, which was a substructure of the three–story PT building, was then built and tested. ...
However, the existing relationship is based on the actual earthquake data, and has not yet been verified by numerical analysis. In addition, there is little data on pipeline damage by high-level seismic ground motion from the 1995 Kobe earthquake, and we cannot compare those in the other earthquakes. Therefore, this study was conducted to analyse the damage ...
This paper presents a framework to integrate several sources of spatial information to derive a map of seismic vulnerability for the city of Arica, Chile, which has been historically affected by this natural hazard. ...