Results 41 to 50 of about 21,312 (304)

Nonlinear Time History Analysis for Seismic Effects on Reinforced Concrete Building

open access: yesNigerian Journal of Technological Development, 2022
A typical Reinforced Concrete (RC) building frame comprising of RC columns and connecting beams that participates in resisting the earthquake forces.
A. Hasan   +3 more
doaj   +2 more sources

Method and application of extending seismic vibrator bandwidth toward low frequency

open access: yesAdvances in Mechanical Engineering, 2019
Low-frequency content of the output signal is very helpful in seismic exploration. In this study, method and application are conducted to extend the bandwidth of a seismic vibrator toward low frequency. Factors limiting vibrator’s low-frequency extension
Gang Li   +6 more
doaj   +1 more source

Numerical models for seismic analysis of arch dams [PDF]

open access: yes, 2022
This paper presents a study on the seismic behaviour of large arch dams under strong earthquakes. The numerical simulations are carried out using DamDySSA, a 3D finite element program developed for dynamic analysis of concrete dams, which includes ...
Carvalho, Ezequiel   +5 more
core  

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

open access: yesDeep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski   +4 more
wiley   +1 more source

An Experimental Study on Dynamic Mechanical Properties of Fiber-Reinforced Concrete under Different Strain Rates

open access: yesApplied Sciences, 2018
Fiber-reinforced concrete (FRC) has a great advantage in earthquake-resistant structures, as compared with regular concrete. However, there are many difficulties in the construction and maintenance of concrete structures due to the high density and easy ...
Yuexiu Wu   +3 more
doaj   +1 more source

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

open access: yesDeep 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   +6 more
wiley   +1 more source

Dynamic response of offshore wind turbine monopile foundations in layered soils under wind, wave and earthquake actions

open access: yesApplied Ocean Research
Earthquakes occur frequently in China’s southeast coastal areas. Therefore, in this region, offshore wind turbine (OWT) structures are highly likely to be simultaneously affected by wind, waves and earthquakes. Firstly, based on the wave theory and Snell’
Zhibo Chen   +4 more
doaj   +1 more source

Sub-Rectangular Tunnel Behavior under Seismic Loading

open access: yesApplied Sciences, 2021
Circular and rectangular tunnel shapes are usually chosen when excavating at shallow depths in urban areas. However, special-shaped tunnels such as sub-rectangular tunnels have recently been used to overcome some drawbacks of circular and rectangular ...
Van Vi Pham, Ngoc Anh Do, Daniel Dias
doaj   +1 more source

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao   +3 more
wiley   +1 more source

Analysis of Pile–Soil Interaction Mechanisms for Wind Turbine Tower Foundations in Collapsible Loess Under Multi-Hazard Coupled Loading

open access: yesBuildings
This study investigates the stability of high-rise wind turbine tower foundations in collapsible loess regions through finite element analysis. The mechanisms by which wind load, extreme rainfall load, and seismic load interact during the dynamic ...
Kangkai Fan   +5 more
doaj   +1 more source

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