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A simplified design procedure for seismic retrofit of earthquake-damaged RC frames with viscous dampers
simplified seismic design procedure viscous damper RC frame energy dissipation equivalent damping ratio
2014/4/10
The passive energy dissipation technology has been proven to be reliable and robust for recent practical applications. Various dampers or energy dissipation devices have been widely used in building s...
SPIE leaders express condolences to people of Japan following earthquake and tsunami
SPIE massive tsunami hitting coastal nuclear-powered electrical plants
2011/4/21
SPIE Members in Japan are among those assessing damage and looking for the way forward after Friday's 8.9-magnitude earthquake northeast of Tokyo that triggered a massive tsunami hitting coastal areas...
Shaking table test of the effects of multi-unit particle dampers attached to an MDOF system under earthquake excitation
analytical modeldiscrete element methodimpactparticle damperpassive vibration controlshaking table test
2014/4/10
This paper presents the results of an experimental and analytical/computational study of the performance of multi-unit particle dampers with an MDOF system. A series of shaking table tests of a three-...
Active TLCGD control of plane asymmetric buildings under earthquake excitation
Asymmetric building Earthquake excitation Active control LQR algorithm
2012/2/29
The sealed, tuned liquid column gas damper (TLCGD) with gas-spring effect extends the frequency range of application and efficiently increases the modal structural damping. Active tuned liquid column ...
An Example of Applying Wood Piles as a Countermeasure against Liquefaction during the 1964 Niigata Earthquake
civil engineering greenhouse gases liquefaction utilization of wood wood pile
2009/11/23
Increasing the utilization of wood on a long-term basis is considered one of the effective solutions in reducing greenhouse gases. Realizing its potential, construction of highly durable wooden houses...
Earthquake Reliability of Lifeline Networks
Network reliability lifelines earthquake seismic hazard analysis spatial correlation
2009/10/14
Lifelines such as pipelines, transportation, communication and power transmission systems are networks
which extend spatially over large geographical regions. The quantification of the reliability (s...
Semiactive Control of Earthquake-Excited Structures
Semiactive control Structural control Optimal control
2009/10/14
A new semiactive closed loop control algorithm is developed using an actuator with variable stiffness and damping to suppress structural vibrations caused by unknown disturbances such as earthquakes. ...
Investigation of Hydrodynamic Effects on Linear and Nonlinear Earthquake Responses of Arch Dams by the Lagrangian Approach
Hydrodynamic effect Dam-water-foundation interaction Linear and nonlinear analysis
2009/10/12
The linear and nonlinear responses of a selected arch dam subjected to earthquake ground motion are presented in this study. The hydrodynamic e ects on the dynamic response of arch dams are investigat...
A Critical Review on Electromagnetic Precursors and Earthquake Prediction
Critical Review Electromagnetic Precursors Earthquake Prediction
2009/7/28
Seismo-electromagnetic precursory-based earthquake prediction studies are criticized in terms of their scientific content, problem complexity, signal excitation and propagation, causal relations with ...
Disaster Monitoring by ALOS for May 12, 2008 Sichuan Earthquake in China
ALOS PALSAR AVNIR-2 PRISM China Sichuan Earthquake
2010/11/24
Disaster Monitoring by ALOS for May 12, 2008 Sichuan Earthquake in China。
Origin of gushed natural gas induced by the 2003 Tokachi-oki Earthquake at Izumisato in Chitose city, central Hokkaido
2003 Tokachi-oki Earthquake microbial natural gas archaea CO2-reduction
2009/5/7
The 2003 Tokachi-oki Earthquake induced natural gas to gush out at several points in the Izumisato area of Chitose city, central Hokkaido, on September 26th. Four gas samples were taken on October 2...
A model for earthquake generation and volcano formation in the NE Japan subduction zone
earthquake generation mechanism subduction zone asperity model dehydration
2009/5/6
I introduce a model for generation of interplate, intraslab and shallow inland earthquakes in the NE Japan subduction zone and for magma genesis and ascent within the mantle wedge beneath the arc. Wa...
Earthquake-proof Reinforcement of Deteriorated Framing of Existing Wooden Houses with Shear-Resistant Components
existing wooden house earthquake-proof reinforcement deterioration shear-resistant component anchor joint
2009/3/4
A practical earthquake-proof reinforcement of existing wooden houses was proposed. This study focused on deteriorated framing at the sills and columns of external walls of Japanese conventional houses...
Response spectrum modelling for regions lacking earthquake records
Seismic design response spectrum Component Attenuation Model moderate seismicity regions
2009/2/20
The design response spectrum is typically the starting point of most codified seismic design and assessment procedures and is predominantly used to prescribe the applied inertia forces induced by eart...
Accelerograms for Dynamic Analysis under the New Australian Standard for Earthquake Actions
Artificial Accelerograms Time-history Earthquake Seismic loading Australia
2009/2/18
The new Australian Standard for Earthquake Actions requires buildings exceeding 50 m in height and located in areas with hazard factor of Z ≥ 0.08 (which applies to most capital cities including Canbe...