Results 61 to 70 of about 5,915,569 (299)

The effect of the number of response cycles on the behaviour of reinforced concrete elements subject to cyclic loading [PDF]

, 2012
The development of damage in reinforced concrete (RC) structures is a cumulative process. Some damage indices used to quantify damage make use of the number of response cycles as an Engineering Demand Parameter (EDP) relating with damage development ...
Varum, H., Rossetto, T., Borg, R. C.
core  

Comparative structural response of two steel bridges constructed 100 years apart [PDF]

, 2011
This paper presents a comparative numerical analysis of the structural behaviour and seismic performance of two existing steel bridges, the Infiernillo II Bridge and the Pinhao Bridge, one located in Mexico and the other in Portugal. The two bridges have
Aníbal Costa, Delgado, Walter, Varum, Humberto, Jose J. Álvarez, Álvarez, Jose J., Fernandes, Catarina, Jara, Jose M., Humberto Varum, Romain Sousa, Costa, Anibal, Manuel Jara, Jara, Manuel, Jara, José, Álvarez, Jesús, Jose M. Jara, Catarina Fernandes, Sousa, Romain, Walter Delgado   +17 more
core   +1 more source

Ukraine Rapid Damage and Needs Assessment, August 2022

, 2022
The Russian Federation’s invasion of Ukraine, which began February 24, 2022, has caused significant civilian casualties and damage to infrastructure and has taken a severe human, social, and economic toll. As
World Bank, European Commission, Government of Ukraine   +2 more
core   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Uncertainty Analysis of Seismic Effects on Cultural Relics in Collections: Integrating Deep Learning and Reinforcement Strategies

Applied Sciences
Due to the unpredictability of seismic and the complexity of collection environments, significant uncertainty exists regarding their impact on cultural relics.
Lin He, Zhengyi Xu, Mengting Gong, Weikai Wang, Xiaofei Yang, Jianming Wei   +5 more
doaj   +1 more source

Fluid‐induced slip on a rate‐and‐state fault during co‐ and post‐injection: The interplay of fluid pressure diffusion and poroelastic stress

Deep Underground Science and Engineering, EarlyView.
Fault slip can occur ahead of the injection pressure front due to poroelastic stress. Our model captures the interaction of pressure, stress, and friction, providing new insights into injection‐induced seismicity and post‐injection fault slip. Shut‐in operations can either mitigate or accelerate seismic events depending on fault conditions and ...
Qifeng Xie, Lei Wang, Qi Li
wiley   +1 more source

Damage Identification and Seismic Vulnerability Assessment of a Historic Masonry Chimney

Annals of Geophysics, 2017
The present paper deals with the dynamic characterisation of a historical masonry chimney aimed at identifying the structural damage and assessing its seismic performance. The structure was severely damaged by a lightning accident and in-depth repair works were executed to re-instate its sound configuration.
Masciotta, M. G., Ramos, L. F., Lourenco, P. B. ., VASTA, Marcello   +3 more
openaire   +4 more sources

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

Deep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Seismic vulnerability of deep tunnels influenced by chloride ion corrosion

Shenzhen Daxue xuebao. Ligong ban
Chloride ion erosion adversely affects the seismic performance of tunnels, making it essential to study the seismic vulnerability of tunnels in corrosive environments for a comprehensive seismic assessment over their entire lifecycle.
GUAN Minsheng, ZHANG Jing, LI Yuan, CHEN Xiangsheng   +3 more
doaj   +1 more source