Results 71 to 80 of about 739,630 (342)

Fragility assessment of tunnels in soft soils using artificial neural networks

Underground Space, 2022
Recent earthquakes have shown that tunnels are prone to damage, posing a major threat to safety and having major cascading and socioeconomic impacts. Therefore, reliable models are needed for the seismic fragility assessment of underground structures and
Zhongkai Huang, Sotirios A. Argyroudis, Kyriazis Pitilakis, Dongmei Zhang, Grigorios Tsinidis   +4 more
doaj   +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  

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

Multidimensional Seismic Fragility Study of Intake Towers Based on Incremental Dynamic Analysis

Buildings
Assessing the fragility of intake towers using a single damage index does not allow for accurate evaluation of the potential for structural damage under seismic conditions.
Xiaona Li, Yingjie Zhou, Hemin Zhu, Yuchen Li, Haowen An   +4 more
doaj   +1 more source

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

The analysis of the optimal scalar and vector intensity measurements for seismic performance assessment of deep-buried hydraulic arched tunnels

Underground Space, 2023
The selection of optimal intensity measures (IMs) has been recommended for generating the seismic demand models with different probabilities by researchers since the seismic IMs are closely associated with earthquake risks and structural safety. However,
Benbo Sun, Gangqin Zhang, Binghan Xue, Lei Kou, Liangming Hu, Weiying Liu   +5 more
doaj   +1 more source

Landslide Risk: Economic Valuation in the North-Eastern Zone of Medellin City [PDF]

, 2017
Natural disasters of a geodynamic nature can cause enormous economic and human losses. The economic costs of a landslide disaster include relocation of communities and physical repair of urban infrastructure.
, Chowdhury R., César Augusto Hidalgo, D. T. P. B. R. I., Efron B. T. R., HAZUS, Hidalgo C., Hidalgo C. A., Hidalgo C. A., Johnny Alexander Vega, Leone F., Municipal Cadastral Office of Medellín, Nini Johana Marín, Parra M., Vega J. A.   +14 more
core   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Seismic Damage Probability Assessment of Isolated Girder Bridges Based on Performance under Near-Field Earthquakes

Applied Sciences, 2021
This paper presents a copula technique for developing seismic fragility curves for an RC (reinforced concrete) isolated continuous girder bridge, by considering earthquake damage indicators such as bridge piers, isolated bearing components, and the main ...
Qiang Liu, Chunyan Yang
doaj   +1 more source