Results 31 to 40 of about 25,946 (168)
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
RISK MANAGEMENT OF CHIMNEY FAILURE AS A RESULT OF SEISMIC IMPACT [PDF]
, 2023 В данном исследовании представлена методика оценки воздействия землетрясений на дымовые трубы в сочетании с подходом к управлению рисками. Степень повреждений классифицируется путем определения индикаторов повреждений.
Fomin, N. +3 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley +1 more source
, 2011 超限高层建筑是指超过国家现行规范规定的适用高度或结构类型、及体型特别不规则的高层建筑。本文针对不同类型的超限高层建筑提出了结构的抗震设计原则和设计要点,以泉州浦西万达广场超高层住宅和江西南昌绿地中央广场为例,讨论了高度超限的复杂高层建筑。利用弹塑性时程分析的结果,对工程的结构抗震性能进行评估,并就结构的受力特性提出了抗震加强措施 ...
林树枝, 许泽瑶
core
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, EarlyView.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
, 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
core
Partisans' evaluations of unconstitutional legislative activity
Policy Studies Journal, EarlyView.Abstract In this research note, we examine whether public evaluations of a policy depend on the constitutionality of the process by which that policy was passed. We observe whether people's views depend on accusations that a policy was passed in violation of a state constitution's single subject rule, and whether the effect of that accusation depends ...
Kevin K. Banda +2 more
wiley +1 more source
Jixie chuandong, 2007 在对修形量产生的回程误差深入分析的基础上,提出了一种适用于高精度针摆传动最佳修形齿廓的概念,对采用”负等距+正移距”修形方法获得最佳修形齿廓的原理进行了深入探讨,根据编制的相应计算软件,可以方便地迭代出满足预定几何回程角时的修形量。基于传动承载时摆线轮针齿啮合、柱销柱销孔啮合时变形协调原理,完成了整个传动过程的动态回程误差分析,完善了回程误差分析计算数学模型。
张东生, 关天民
doaj
Policy Studies Journal, EarlyView.ABSTRACT This study examines the evolution of climate change discourse in the United States Congress from 1987 to 2017, employing natural language processing (NLP) techniques to analyze floor speeches. Using a la carte (ALC) word embeddings, we investigate how Democratic and Republican members of Congress frame climate change, focusing on denialist ...
Joseph Charles Van Matre +2 more
wiley +1 more source
Dianci bileiqi对电气设备地震动响应分析应用较多的主要有两种方法——振型分解反应谱法和动力时程法，其中某些关键动力参数的取值在电气设备抗震相关规范中并没有具体规定，实际分析时往往凭个人经验，致使分析结果因人而异、不尽准确。为了在计算分析阶段通过对关键动力参数准确取值，尽可能真实获取结构动力响应，本研究以特高压支柱式电气设备颇具代表性的两种材质的结构本体及加装减隔震装置后的结构为分析对象，在非线性时程分析方面，通过对动力时程法主要参数：振型参与阶数、地震波及峰值加速度的影响对比分析 ...
陈忆前, 潘飞, 彭伟, 刘洋
doaj +2 more sources