Πλοήγηση ανά Θέμα "Seismology"
Αποτελέσματα 1-20 από 39
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Analysis and design of buried steel water pipelines in seismic areas
(2017)This paper offers an overview of available methodologies and provisions for the structural analysis and mechanical design of buried welded steel water pipelines subjected to earthquake action. Both transient (wave-shaking) ... -
Bayesian optimal estimation for output-only nonlinear system and damage identification of civil structures
(2018)This paper presents a new framework for output-only nonlinear system and damage identification of civil structures. This framework is based on nonlinear finite element (FE) model updating in the time-domain, using only the ... -
Cellular-solid shear walls under seismic excitations
(2010)Cellular solids with deterministic periodic topologies show great potential for applications as response modification elements within structural systems, due to their ultra-light and good thermal properties. Response ... -
Design and assessment of steel and steel-concrete composite structures: Efficacy of EN1998 design procedure
(2013)Design codes for seismic constructions allow the realization of structures able to dissipate energy through cyclic plastic deformations localized in specific zones, selected to involve the largest number of structural ... -
Effect of spatial variability of soil properties on the stability and permanent seismic displacements of highway slopes
(2019)The effect of spatial variability of soil properties, slope inclination and excitation characteristics on the development of permanent displacements is investigated using random fields, created by the Local Average Subdivision ... -
Effective-stress seismic analysis of a gravity multi-block quay wall
(2018)The seismic performance of an existing gravity quay wall consisting of concrete blocks is investigated using effective stress analysis. The study focuses on the effect of the uncertainty associated with the spatial variability ... -
Evaluation of seismic slope displacement techniques in term of engineering criteria and financial restrictions
(2021)Whether a slope is naturally occurring or constructed, its stability is a critical situation. During the designing part of a construction, engineers can use a variety of tools in order to dimension slope stability and ... -
Experimental Investigation of Steel Lap Welded Pipe Joint Performance under Severe Axial Loading Conditions in Seismic or Geohazard Areas
(2020)Welded lap joints are commonly used in large-diameter steel pipelines for water transmission. Their structural performance constitutes a key consideration for safeguarding pipeline integrity with no loss of pressure ... -
EXPERIMENTAL RESEARCH ON IMPROVEMENT OF THE DUCTILITY OF R/C SEISMIC WALLS THROUGH SLIP PREVENTION WITH THE USE OF STEEL RHS
(2022)Several researchers propose placing diagonal reinforcing bars at the base of the wall to treat the shear slip, while others have suggested various ways to address this problem associated with halting the effects incurred ... -
Experimental Results of Steel Lap Welded Pipe Joints in Seismic Conditions
(2018)Welded lap joints are commonly used in large-diameter steel pipelines for water transmission. Their structural performance constitutes a key issue for safeguarding pipeline structural integrity with no loss of pressure ... -
Finite element analysis of sloshing in horizontal-cylindrical industrial vessels under earthquake loading
(2005)The present paper presents a finite-element formulation for earthquake-induced sloshing in horizontal-cylindrical industrial vessels. Assuming small-amplitude free-surface elevation, a linearized sloshing problem is obtained, ... -
Finite Element Analysis of Steel Lap Welded Joint Behavior under Severe Seismic Loading Conditions
(2019)The present paper extends the experimental and numerical research presented at the ASCE 2018 conference. The paper is numerical, based on a shell finite element simulation of the welded lap joint subjected to internal ... -
Geophone networks and environmental studies: Application to landslides
(2016)Seismic surveys are a non-invasive method for exploring the geological structure of the Earth. Their purpose is to identify the composition of the subsoil. This information can be used to indicate the presence of potential ... -
Influence of variability of material mechanical properties on seismic performance of steel and steel–concrete composite structures
(2017)Modern standards for constructions in seismic zones allow the construction of buildings able to dissipate the energy of the seismic input through an appropriate location of cyclic plastic deformations involving the largest ... -
Joint Strength or "Efficiency" Factors of Steel Lap Welded Joints for Use in Water Conveyance
(2019)Joint "efficiency" factors are proposed for pressure vessels, piping, and pipelines by ASME standards. For the particular case of non-radiographically-tested lap-welded joints, a low value of joint "efficiency" is proposed. ... -
Low-cycle fatigue of base-plate-to-shell connection in uplifting liquid storage tanks under seismic loading
(2019)Unanchored steel tanks, subjected to strong seismic loading, may exhibit base plate uplifting. Under repeated uplifting, the welded connection of the tank base plate with the tank shell (a fillet-welded connection) is ... -
Low-cycle fatigue of fillet-welded steel plate connections
(2021)The present study focuses on the mechanical behavior of fillet-welded steel plated joints and the development of a strain-based fatigue assessment procedure, motivated by the seismic response of unanchored steel tanks that ... -
Newly Developed Seismic Resilient Steel Pipe Joint Safeguards: Pipeline Structural Integrity during Severe Geohazard Events
(2020)The mechanical performance of lap welded joints is essential for safeguarding the structural integrity of steel water pipelines, after a severe earthquake or other geohazard loadings. Over the past 4 years, an extensive ... -
A non-seismic data interpretation of gas seepage in the mesohellenic basin in Greece
(2020)Oil and gas seeps on the Earth’s surface are important in exploration since they potentially indicate the presence of hydrocarbons on the subsurface structure. They are influenced by the geological and tectonic structures ... -
A Nonlinear Model Inversion Method for Joint System Parameter, Noise, and Input Identification of Civil Structures
(2017)This paper presents a framework for nonlinear system identification of civil structures using sparsely measured dynamic output response of the structure. Using a sequential maximum likelihood estimation (MLE) approach, the ...