Results 41 to 50 of about 2,538 (232)

Resilience-Based Seismic Optimization of Buildings Using Tuned Mass Dampers

Buildings
A multi-objective tuning framework for optimizing Tuned Mass Damper (TMD) systems is presented. This framework optimizes the controlling parameters of TMDs while considering building resilience. The employed optimizer is the multi-objective HBA.
Lixin Wang, Jianfu Lin, Sijian Lin, Zihan Zhou, You Dong, Jafar Jafari-Asl, Jiaxin Zhang   +6 more
doaj   +1 more source

Research and policy suggestions on the popularization of science after the great Tangshan earthquake

地震科学进展, 2020
With increasing attention paid by the state to the popularization of science for earthquake prevention and disaster reduction, the construction of natural disaster monitoring and early warning system, and the modernization of natural disaster prevention ...
Yuxin Zhou, Yin Zhang, Zhiqing Yang, Binqiao Duan, Zeshu Li   +4 more
doaj   +1 more source

An assessment of stress and production rate of sucker rod heat pipes in oil well pumping system

Deep Underground Science and Engineering, EarlyView.
The sucker rod pumping system is the preferred oil extraction technique. The concept about equipping the hollow vacuum space in solid sucker rods with heat pipe has been scrutinized in terms of stress and oil production evaluation. Abstract The implementation of the heat pipe concept in sucker rods for oil pumping systems negates the requirement for an
R. S. Anand, Ang Li, Wenbo Huang, Juanwen Chen, Qingshan Ma, Fangming Jiang   +5 more
wiley   +1 more source

Seismic response reduction analysis of large chassis base-isolated structure under long-period ground motions

Earthquake Research Advances, 2021
Long-period structures (e.g. Isolated structures) tend to produce pseudo-resonance with low frequency components of long-period ground motions, resulting in the increase in damage.
Feiyan Li, Linjian Wang, Yingxiong Wu
doaj   +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

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Analysis and optimization of the reform status of Yunnan seismic monitoring center stations

地震科学进展, 2023
The seismic monitoring center station is the basic unit of the seismic monitoring system. In the face of the new situation of reform and development and the establishment of a comprehensive emergency disaster relief system, the Yunnan Earthquake Agency ...
Zhirou Zhao, Yan Zhuang, Yanmei Wu, Zhen Li   +3 more
doaj   +1 more source

Thoughts on popular science propaganda for earthquake prevention and disaster reduction in Guizhou Province in the new era

地震科学进展, 2022
In recent years, several moderate earthquakes with great influence have occurred in Guizhou Province. Guizhou people pay more attention to earthquakes and have an unprecedented demand for earthquake knowledge. In order to improve the public’s ability to deal with earthquake disasters, combined with the current practices of popular science propaganda ...
Yafang Shi, Peng Li, Lin Wang, Deyu Li, Yu Liu   +4 more
openaire   +1 more source

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source