Results 51 to 60 of about 211,232 (337)

Synergistic combination of systems for structural health monitoring and earthquake early warning for structural health prognosis and diagnosis [PDF]

, 2012
Earthquake early warning (EEW) systems are currently operating nationwide in Japan and are in beta-testing in California. Such a system detects an earthquake initiation using online signals from a seismic sensor network and broadcasts a warning of the ...
Beck, James L., Wu, Stephen
core   +1 more source

Seismic Fragility Analysis of Buildings Based on Double-Parameter Damage Models considering Soil-Structure Interaction

Advances in Materials Science and Engineering, 2019
Most conventional seismic fragility analyses of RC buildings usually ignore or greatly simplify the soil-structure interaction (SSI), and the maximum interstory drift ratio (MIDR) is often adopted to establish seismic fragility curves.
Panpan Zhai, Peng Zhao, Yang Lu, Chenying Ye, Feng Xiong   +4 more
doaj   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Computationally efficient seismic fragility analysis of geostructures

Computers & Structures, 2009
Seismic fragility analysis is considered nowadays as a very efficient computational tool for determining the structural behaviour over a range of seismic intensity levels. There are two approaches for developing fragility curves, either based on the assumption that the structural response follows the lognormal distribution or using reliability analysis
Nikos Lagaros (), Yiannis Tsompanakis (), Prodromos Psarropoulos (), Evaggelos C. Georgopoulos()   +3 more
openaire   +2 more sources

Cost-Effectiveness of Stronger Woodframe Buildings [PDF]

, 2005
We examine the cost-effectiveness of improvements in woodframe buildings. These include retrofits, redesign measures, and improved quality in 19 hypothetical woodframe dwellings.
Beck, James L., Porter, Keith A., Scawthorn, Charles R.   +2 more
core   +2 more sources

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

A structural demand model for seismic fragility analysis based on three-parameter lognormal distribution

, 2021
Seismic fragility analysis, which quantitatively describes the dynamic relationship between earthquake intensity and structural failure probability, plays an important role in the overall seismic risk assessment.
Fang-Wen Ge, Ming-Na Tong, Yan-Gang Zhao
semanticscholar   +1 more source

PEER Testbed Study on a Laboratory Building: Exercising Seismic Performance Assessment [PDF]

, 2005
From 2002 to 2004 (years five and six of a ten-year funding cycle), the PEER Center organized the majority of its research around six testbeds. Two buildings and two bridges, a campus, and a transportation network were selected as case studies to ...
Beck, James L., Chang, Stephanie E., Chaudhuri, Samit Ray, Comerio, Mary C., Falit-Baiamonte, Anthony, Holmes, William T., Hutchinson, Tara, Konstantinidis, Dimitrios, Lee, Tae-Hyung, Makris, Nicos, Mosalam, Khalid, Porter, Keith A., Shaikhutdinov, Rustem, Smith, Ryan, Somerville, Paul, Stallmeyer, John C.   +15 more
core  

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Adjusting Fragility Analysis to Seismic Hazard Input

Journal of Disaster Research, 2010
This paper shows that the results of contemporary probabilistic seismic hazard analysis (PSHA), uniform hazard spectra, and hazard curves are inconsistent with the fragilitymethod used for seismic probabilistic risk assessment (PRA). The calculation used in PSHA is based on the evaluation of the probability of exceeding specified acceleration levels ...
Jens-Uwe Klügel, Richard Attinger, Shobha Rao   +2 more
openaire   +1 more source