Results 21 to 30 of about 1,157 (159)
Dizhen xuebao, 2020 首先基于有限断层破裂下的运动学震源模型，对比验证了三维谱元法对于近场地震动的模拟精度。 进而通过含盆地模型与不含盆地的一维水平成层模型的地震动强度之间和放大系数分布特征之间的对比，详细研究了直下型断层的破裂速度对盆地地震效应的影响。结果表明，盆地的存在会显著改变近断层地震动的分布特征，同时盆地内不同分量强地震动的分布特征变化较大。断层破裂速度对盆地地震效应影响显著，随破裂速度的增大盆地地震动强度逐渐增加，但不同分量上地震动强度的增加速率显著不同，受盆地效应的影响，放大系数表现出与强地震动不同的分布特征 ...
Tiancheng Han, Yanyan Yu, Haiping Ding
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Seismic Response Analysis of Small Modular Reactor Containment Based on LRB and FPS Isolation Strategies [PDF]
Small modular reactor (SMR) refers to a new generation of reactors with a unit power output of less than 300 MW. These reactors utilize innovative technologies for modular design and rapid on-site assembly.
JI Xiaoyu1, CHEN Nanyu1, CHEN Mufeng2, ZHANG Shuaijun1, HOU Gangling1, CAI Xuesong1
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Benchmark-problem investigation for seismic response of a large-span cable-stayed bridge based on nonlinear stochastic optimal control [PDF]
, 2016 大跨度斜拉桥Benchmark问题的振动控制研究是当前国际结构控制研讨会的重要议题之一。以美国Bill Emerson Memorial斜拉桥第二阶段Benchmark模型为研究对象,在非线性随机动力学与控制的拟哈密顿理论体系框架下,运用基于随机平均法和随机动态规划原理的非线性随机最优(NSO)控制策略,对地震作用下的Benchmark模型进行MATLAB仿真分析。将最优控制力和性能评价指标与线性二次型Gauss(LQG)控制的计算结果进行对比 ...
余友熙 +3 more
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Authoritarianism and the Emergence of Parallel State Dynamics: Evidence From the Syrian Earthquake
Digest of Middle East Studies, Volume 34, Issue 1, Winter 2025.ABSTRACT This article investigates the Syrian regime's strategic manipulation of the February 2023 earthquake to reaffirm its authority and maintain legitimacy. The regime's response to the disaster is analyzed to understand how authoritarian states leverage natural disasters for political gains. It argues that the Assad regime's survival is not merely
Rahaf Aldoughli
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Seismic dynamic response analysis for tunnels considering coseismic displacement [PDF]
Fault dislocation is a form of dynamic impact load that induces permanent deformation of the stratum in the vicinity of the fault. Based on the finite-fault source and crustal velocity model, coseismic displacement is computed according to the layered ...
FENG Jun1, 2 , ZHAO Boming1, 2 , WANG Zijun1, 2
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Research on Liquefaction Resistance of Bucket Foundation for Offshore Wind Turbines [PDF]
, 2023 [Introduction] With the increasing demand for clean energy, the offshore wind power sector has seen a spurt of progress in recent years, and the bucket foundation has become the preferred choice for offshore wind turbines considering its good economy ...
Conghuan LE +4 more
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The Modern Language Journal, Volume 108, Issue 1, Page 222-242, Spring 2024.Abstract In response to the issue of Chinese language teacher attrition in Myanmar, this study aimed to examine the professional commitment of these teachers, with a focus on how their commitment is constructed and shaped within the local context. The study adopted a theoretical lens of positive psychology and utilized a hermeneutic phenomenological ...
Yue Peng, Kaiyang Lou, Tao Xiong
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Dizhen xuebao为研究速度脉冲地震动在平动分量与扭转分量联合作用下对钢框架结构的不利影响，本文选取向前方向性效应脉冲地震动、滑冲效应脉冲地震动以及无脉冲地震动作为初始平动记录，通过频域法生成相应的扭转分量。随后，将不同类型的脉冲地震动与扭转分量组合，对按照我国建筑抗震设计规范设计的五层钢框架结构进行了罕遇水平地震下的动力响应分析。结果表明：相较无脉冲的平动地震动，在仅考虑速度脉冲地震动时，向前方向性效应脉冲地震动对结构层间位移角的影响最大，增幅达44%；仅考虑扭转分量时，角柱的层间位移角增大24%，而中柱几乎无变化 ...
Miao Han +3 more
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Study On Structure Mechanics Analysis Of High - rise Isolated Buildings In Moderate Earthquake Intensity And High Wind Pressure Area [PDF]
, 2017 隔震建筑经历了实际地震的考验，表现出了优良的减震性能；目前，人们对于高层隔震建筑的减震原理并未清晰，高层隔震建筑也存在结构倾覆稳定的问题，隔震技术并未广泛的应用于高层建筑中。高层隔震建筑在减震与抗风方面对隔震层刚度的要求存在矛盾之处，结构减震效应与风控的均衡，尤其是中烈度高风压地区，是个很有研究价值的课题。 本文对高层隔震建筑隔震层的设计展开了详细的介绍，输入三维地震波，验算了本文研究案例隔震层设计的可行性。从模态分析与反应谱分析的角度，研究了高层隔震建筑的减震原理；分析了高层隔震建筑在设防烈度为7度 ...
廖才振
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Seismic motion input methods of viscous-elastic boundary and numerical simulation of seismic response on large diameter tunnels [PDF]
To determine the selection of input wave field at the bottom of the viscous-elastic boundary, and study the seismic response of two parallel large-diameter shield tunnels, corresponding numerical models were established for analysis.
Liping Jing +3 more
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