Results 31 to 40 of about 1,245 (158)
Anti-earthquake Analysis of Nuclear-class UPS Based on HyperWorks [PDF]
, 2016 核级UPS是核电站的重要设备之一,对核电厂的安全稳定运行起重要作用。为保证设备质量和可靠性,核级UPS需要进行抗震强度分析确保其通过抗震试验鉴定,使其满足当电厂实际发生地震的烈度在鉴定试验抗震响应谱的包络范围内设备能够安全运行。使用HyperWorks软件对核级UPS进行结构抗震强度分析,以确保其结构设计满足核级设备的抗震要求。The nuclear-class( 1E class) UPS,as the significant power supply in nuclear power plant ...
付明星, 孟超, 李静, 许本福
core
Analysis on the response of the dip slope with weak layer to earthquake [PDF]
Taking the down-slope with weak strata in the south of Fushun west open-pit mine as the reference prototype, numerical simulations of the down-slope with weak strata were conducted through FLAC3D software, which included the simulation of actual ground ...
Laigui WANG +3 more
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, 2018 针对高层建筑在中烈度地震时减震系数值较大以及在高风压下可能引起其隔震支座受拉等原因导致中烈度高风压地区基础隔震高层建筑的研究较少的问题,以一栋处于初步设计阶段的基础隔震高层建筑为研究对象,详细分析了该高层建筑在达到不同设防水准的地震和不同重现期风荷载的作用下,上部结构以及隔震支座的各种响应和减震效果.结果表明,在中烈度高风压地区,可以设计安全可靠的基础隔震高层建筑 ...
庄佳坤, 廖才振, 张建国
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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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Dizhen xuebao2008年汶川MS8.0地震现场的震害调查资料显示，河流阶地地形对建筑物震害分布的影响规律表现为：阶地前缘冲洪积层较厚区域的建筑物遭受了严重的破坏，而阶地后缘坡积层较薄区域受损则相对较轻，总体上呈现出前缘震害显著大于后缘的特征。为研究该震害特征的机制，利用有限差分软件FLAC3D构建三维阶地模型，模拟分析了脉冲荷载作用下阶地模型的地震动响应。结果表明：各级阶地前缘的地震动水平均显著高于后缘，同时随着上覆土层的增厚，峰值加速度、相对持时值、反应谱平台值以及放大系数均呈现上升趋势；随着阶地级数的减小 ...
Wen Xiong +6 more
doaj +1 more source
Gaoya dianqi, 2022 变压器—套管体系作为电力系统中重要的一环，在地震中受损较严重。为探究变压器—套管体系的地震易损性和地震失效风险，建立某±800 kV特高压换流变压器—套管体系有限元模型，对其进行不确定性分析和易损性分析，并评估该体系的地震失效风险。结果表明：各类不确定性对套管动力响应均有一定影响，其中认知偏差不确定性对体系动力响应影响较大。体系地震失效风险与场地因素有关，地震危险性低的区域，地震失效风险有可能较高。在进行换流变设备抗震设计时，建议考虑多重不确定性对变电站设备的地震易损性和地震失效风险的影响。
叶旭琛, 朱阳, 何畅, 谢强
doaj
Seismic Response Analysis and Damage Evaluation of Curved Continuous Rigid Frame Bridge [PDF]
, 2015 曲线桥具有线形适应性强、造型美观等优点，在我国的公路和城市桥梁中得到了广泛的运用。而连续刚构的形式因为能合理调整结构的受力情况，且避免设置支座，也深受设计者的青睐。近年来，地震频发，曲线桥与相同跨径的直线桥相比震害显著，连续刚构桥也显示出一些自身的震害特点。本文在总结曲线桥抗震研究进展、常见震害特点以及地震反应计算理论与损伤评估方法的基础上，以一座曲线连续刚构桥为工程背景，进行反应谱分析与时程分析，研究该桥在地震作用下的响应以及对其进行地震作用下的损伤评估。首先通过计算对比 ...
林灏
core
Comparative Analysis on Seismic Base Isolation for Integrated Fast Reactor Nuclear Power Plant [PDF]
The fast reactor is one of the principal reactor types in the fourth generation of nuclear power technologies worldwide. The integrated closed-cycle fast reactor nuclear energy system (referred to as the integrated fast reactor) is a nuclear energy ...
MIAO Xin, ZHANG Botao, LIU Yizhe, LIU Linding
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Gaoya dianqi, 2022 特高压换流变压器是换流站的关键设备,套管是影响换流变抗震性能的一个重要组件。为评估换流变套管的抗震性能,建立了±800 kV换流变—套管体系的精细化有限元模型,获得了体系的动力特性和地震响应,研究了套管内部导电杆预拉力对套管动力特性和地震响应的影响。结果表明:当套管内导电杆所受预拉力较小时,结构基本振型表现为导电杆的振动,加大预拉力可有效提升套管自振频率;适当增加导电杆预拉力,可以显著减小地震作用下导电杆与套管内壁的相对位移响应,有利于提高套管电气性能,且对套筒应力响应无明显影响 ...
陈星 +5 more
doaj
Characteristics of Cenozoic volcanic edifices in the Pingnan area, Xihu Sag [PDF]
Significance Igneous rocks are well-developed in the southern Pinghu slope zone, Xihu Sag, East China Sea Shelf Basin. In this zone, the increased local geotemperature caused by magmatic activity produced significant impacts on the thermal evolution of ...
Donghui JIANG +5 more
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