Results 71 to 80 of about 19,295 (248)

Innovative Seismic Response-Controlled System with Shear Wall and Concentrated Dampers in Lower Stories

Frontiers in Built Environment, 2017
A new structural control system using damper-installed shear walls in lower stories with reduced stiffness is proposed for vibration control of high-rise RC buildings. That system has some design variables, i.e., height of shear wall, degree of stiffness
Tsubasa Tani, Tsubasa Tani, Ryota Maseki, Izuru Takewaki   +3 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Critical Steady-State Response of Single-Degree-of-Freedom Bilinear Hysteretic System under Multi Impulse as Substitute of Long-Duration Ground Motion

Frontiers in Built Environment, 2017
A set of multiple impulses is introduced as a substitute of many-cycle harmonic waves which represent the long-duration earthquake ground motion. A closed-form expression is derived of the elastic–plastic response of a single-degree-of-freedom structure ...
Kotaro Kojima, Izuru Takewaki
doaj   +1 more source

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

Deep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang, Dehao Meng, Thomas Frühwirt, Hao Liu, Yanan Zhao, Qingyou Zhu, Wengang Dang, Mohamed Ismael, Fei Wang   +8 more
wiley   +1 more source

Theoretical Analysis Model of a New Post-Tensioned, Unbonded, Prestressed Beam–Column Connection

Buildings
To investigate the mechanical properties of a new post-tensioned, unbonded, prestressed beam–column connection—including its hysteresis behavior and energy dissipation capacity—a theoretical analysis was conducted.
Hu Qi, Jie Qin, Wenxuan Zhang, Mengke Zhang   +3 more
doaj   +1 more source

Optimal Viscous Damper Placement for Elastic-Plastic MDOF Structures Under Critical Double Impulse

Frontiers in Built Environment, 2019
A new method for optimal viscous damper placement is proposed for elastic-plastic multi-degree-of-freedom (MDOF) structures subjected to the critical double impulse as a representative of near-fault ground motions.
Hiroki Akehashi, Izuru Takewaki
doaj   +1 more source

Post-traumatic stress disorder in medical workers involved in earthquake response: A systematic review and meta-analysis. [PDF]

Heliyon, 2023
Tahernejad S, Ghaffari S, Ariza-Montes A, Wesemann U, Farahmandnia H, Sahebi A.   +5 more
europepmc   +1 more source

Quantification of rheological parameters in deep‐sea mining plumes

Deep Underground Science and Engineering, EarlyView.
This study explores the variations in rheological properties observed during the propagation of deep‐sea mining plumes, utilizing rheological test data obtained from kaolin clay plumes. Subsequently, taking into account the differences in sediment properties, the effects of clay content and clay mineral composition on the rheological parameters of ...
Xiaolei Liu, Yihan Liu, Yonggang Jia, Xingsen Guo   +3 more
wiley   +1 more source

A Refined Multi-Spring Model for Prestressed Precast Concrete Connections

Buildings
Precast concrete with a moment-resisting frame with hybrid beam–column connections (HBC), which is featured by inelastic deformation induced by opening and closing of the interface between precast beam and column, has been emphasized in recent years ...
Hu Qi, Jie Qin, Mengke Zhang, Zhonghao Zhang   +3 more
doaj   +1 more source

Earthquake Response for Students with Different Severe Degrees of Disabilities: An Investigation of the Special Education Classes in Primary Schools in Taipei. [PDF]

Int J Environ Res Public Health, 2022
Chen YF, Ma KC, Lee MH, Chuang MH.
europepmc   +1 more source