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Showing 1 to 20 of 20 for “"Earthquake motions"”.
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Probabilistic Evaluation of Liquefaction of Sand Under Earthquake Motions
Made available in DSpace on 2014-12-13T19:31:35Z (GMT). No. of bitstreams: 1 7709011.pdf: 6914595 bytes, checksum: fef036f5311228debd3e7af6eea85b5f (MD5) Previous issue date: 1976
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Approximate Modal Analysis of Bilinear Mdf Systems Subjected to Earthquake Motions
Made available in DSpace on 2014-12-13T19:31:49Z (GMT). No. of bitstreams: 1 7913633.pdf: 6590063 bytes, checksum: ccad4f776dfabf747294fb71c86b7b18 (MD5) Previous issue date: 1978
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Analysis of Reinforced Concrete Frame-Wall Structures for Strong Earthquake Motions
Made available in DSpace on 2014-12-13T19:31:51Z (GMT). No. of bitstreams: 1 7915342.pdf: 5744281 bytes, checksum: f604ab75b68cf7ffc8e38ef2abe71551 (MD5) Previous issue date: 1979
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An experimental study of the response of reinforced masonry building systems to earthquake motions
… wall structures were subjected to simulated earthquake motions on a shaking table. A third was tested using conventional static methods to provide insight into differences in behavior of systems that are subjected to artificial static forces and those allowed to develop natural inertial …
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Experimental Study of Frame-Wall Interaction in Reinforced Concrete Structures Subjected to Strong Earthquake Motions
Made available in DSpace on 2014-12-13T19:31:53Z (GMT). No. of bitstreams: 1 8004118.pdf: 12151656 bytes, checksum: 2f34e6c0422f80eb52b0f9a872e82de6 (MD5) Previous issue date: 1979
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Experiments to study seismic drift of reinforced concrete structures
Earthquake-simulation tests of fifteen reinforced concrete single-degree-of-freedom systems were made to provide benchmark data for studying nonlinear drift response. Test variables included strength and initial period of the specimen, and frequency content and intensity of simulated earthquake …
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Optimal design strategies for base-isolated bridges
… defense against the damaging effects of earthquakes. For this design strategy, flexible supports are placed between the deck and substructure. This changes the lowest periods of vibration of the bridge and shifts it to a period where little energy is present in the earthquake motions.
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IMPROVEMENT OF DYNAMIC PROPERTIES AND SEISMIC RESPONSE OF CLAY USING FIBER REINFORCEMENT
… and Environmental Engineering In recent years, earthquakes have caused heavy damage to buildings and infrastructure. One of the causes of heavy damage due to earthquake motions is the role of soft clay in amplifying bedrock ground motions. Improving the soil conditions at a site in order to …
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Frequency- and pressure-dependent dynamic soil properties for seismic analysis of deep sites
… the response of soil deposits to strong earthquake motions employ numerical methods, initially developed for the solution of linear elastic, small - strain problems. Various attempts have been made to modify these methods to handle nonlinear stress - strain behavior induced by moderate to …
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A study of the maximum transient response of simple fully yielding structures
… study was undertaken within the context of the earthquake engineering field. The investigation shows up certain basic characteristics of the transient response of fully yielding structures which appear to be common for widely varying types of exciting function. It also shows that the response of …
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Influence of Diaphragm Flexibility on the Out -of -Plane Dynamic Response of Unreinforced Masonry Walls
… masonry bearing walls in buildings subjected to earthquake motions. Results from a set of shake table tests reveal that, in general, the walls performed very well despite the intensity of the base motion and the slenderness of the wall. This was due to the formation of a hinge at the base of each …
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ΜΕΛΕΤΗ ΤΗΣ ΣΕΙΣΜΙΚΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΚΑΤΑΣΚΕΥΩΝ Ο.Σ. ΣΕ ΜΟΡΦΗ ΟΜΟΙΩΜΑΤΩΝ ΥΠΟ ΚΛΙΜΑΚΑ ΚΑΘΩΣ ΚΑΙ ΣΕ ΠΡΩΤΟΤΥΠΟ ΜΕΓΕΘΟΣ ΜΕ ΤΥΠΟΠΟΙΗΜΕΝΗ ΜΟΡΦΗ
… SCALE 1:7,32 WAS TESTED UNDER SIMULATED EARTHQUAKE GROUND MOTIONS, USING THE EARTHQUAKE SIMULATOR FACILITY OF THE ARISTOTLE UNIVERSITY OF THESSALONIKI. CORRELATIONS WERE MADE BETWEEN THE EXPERIMENTAL RESULTS FROM THE PRESENT STUDY AND THOSE OBTAINED FROM A SIMILAR STUDY THAT WAS MADE IN …
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Performance of Steel Braced Frame Reinforced with Shape Memory Alloy Wires
… large deformations that would occur during large earthquake motions. Three frames were designed and tested; one control steel braced frame and two SMA-reinforced steel braced frames. Examination of the systems under a free vibration test and a quasi-static cyclic test was conducted to study the …
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Topography effects in the 1999 Athens earthquake : engineering issues in seismology
… motion. Macroseismic observations of destructive earthquakes often show higher damage intensity at the tops of hills, ridges and canyons than at lower elevations and on flat areas. Systematic seismic motion amplification over convex topographies has been confirmed by instrumental studies and also …
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Seismic Performance of Square Nickel-Titanium Reinforced ECC Columns with Headed Couplers
… the performance of the columns under various earthquake motions. Dynamic analysis showed that SMA/ECC columns can dissipate more energy than steel RC columns due to their higher displacements. Parametric studies were conducted using Xtract software for moment curvature analysis on SMA/ECC beam …
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Soil-Structure Interaction for low damage Seismic Rocking Systems
In earthquake prone areas, stakeholders now ask for low damage systems that can be easily repaired, following even earthquakes of catastrophic potential. Seismic protection of structures by means of rocking isolation is becoming increasingly popular, since allowing uplift is an inexpensive way to …
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Seismic behaviour of shallow foundations on layered liquefiable soils
Earthquakes have been historically perceived as one of the most damaging<br/>natural hazards. Seismic soil liquefaction is often one of the major sources of<br/>damage and disruptions, and has been observed to severely affect key lifelines.<br/>Settlement and tilting of shallow foundations resting …
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Seismic behavior of semi-rigid steel frames
… damage to welded connections during recent earthquakes led to the investigation of alternatives for the construction of steel frames in seismic areas. Bolted semi-rigid connections have been recognized as an attractive alternative to welded connections. However, existing knowledge on the …
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Seismic Response of Structures with Added Viscoelastic Dampers
… systems to mitigate structural damage caused by earthquakes. The solid viscoelastic dampers are among such passive energy dissipation systems. To examine the response reducing effectiveness of these dampers, it is necessary that engineers are able to conduct response analysis of structures …