Results 81 to 90 of about 20,919 (268)

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
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

RESPONSE OF INTERIOR OBJECTS TO EARTHQUAKES

PROCEEDINGS OF THE JSCE EARTHQUAKE ENGINEERING SYMPOSIUM, 1995
Shaking table tests were conducted to investigate the response of rectangular wooden blocks and block assemblies of various sizes and slenderness to harmonic and earthquake base excitation. The shaking tests were followed by an analytical and a numerical study of response of single blocks and block assemblies.
WINKLER, Tibor, MEGURO, Kimiro, YAMAZAKI, Fumio   +2 more
openaire   +2 more sources

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Seismic Fragility Analysis of Monolithic Precast RC Frames Based on Joint-Level Hysteretic Parameter Identification

Buildings
Monolithic precast reinforced concrete (RC) frames with cast-in-place joint cores and grouted-sleeve splices are increasingly adopted in seismic regions, yet connection degradation is not carried through to system-level fragility: existing studies take ...
Xuefeng Hu, Defeng Xu, Haiying Wang, Yuan Li, Jiaqi Yang, Xinyu Yin, Bo Wang   +6 more
doaj   +1 more source

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

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

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 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

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