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基于OpenSees摇摆防屈曲支撑钢框架抗震性能分析 被引量:7
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作者 张国伟 孙祚帅 +2 位作者 赵紫薇 陈鹏 吴继丰 《工程抗震与加固改造》 北大核心 2019年第2期20-24,共5页
为研究摇摆防屈曲支撑钢框架抗震性能,采用Open Sees有限元软件,基于防屈曲支撑钢框架(BRBSF)和摇摆防屈曲支撑钢框架(RBRBSF)拟静力试验建立试验框架数值模型,采用多细分基于刚度法的梁柱单元模拟钢梁与钢柱,梁端削弱截面处用零长度截... 为研究摇摆防屈曲支撑钢框架抗震性能,采用Open Sees有限元软件,基于防屈曲支撑钢框架(BRBSF)和摇摆防屈曲支撑钢框架(RBRBSF)拟静力试验建立试验框架数值模型,采用多细分基于刚度法的梁柱单元模拟钢梁与钢柱,梁端削弱截面处用零长度截面单元模拟塑性铰出现,并采用缝(Gap)单元与桁架(Truss)单元模拟摇摆柱脚,对比模拟结果与试验结果,验证模型正确性,并进一步分析RBRBSF响应,结果表明:模型能准确预测BRBSF和RBRBSF抗震性能,摇摆柱脚可减轻主体框架损伤风险。 展开更多
关键词 摇摆防屈曲支撑钢框架 数值模拟 Open sees 零长度截面单元 缝单元
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基于OpenSees绿色高性能纤维增强水泥基复合材料柱抗震性能研究 被引量:5
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作者 邵方诚 李秀领 《混凝土》 CAS 北大核心 2020年第4期78-83,88,共7页
利用Open Sees对绿色高性能纤维增强水泥基复合材料(Green High Performance Fiber Reinforced Cementitious Composites,GHPFRCC)柱在低周反复荷载作用下的抗震性能进行数值模拟,得到了C30柱、GHPFRCC柱、火损GHPFRCC柱和加固火损GHPF... 利用Open Sees对绿色高性能纤维增强水泥基复合材料(Green High Performance Fiber Reinforced Cementitious Composites,GHPFRCC)柱在低周反复荷载作用下的抗震性能进行数值模拟,得到了C30柱、GHPFRCC柱、火损GHPFRCC柱和加固火损GHPFRCC柱的滞回曲线和骨架曲线,并与试验结果进行对比分析。模拟不同加固厚度、不同压应变值和不同的积分点数量GHPFRCC柱的性能变化,得出结论。Open Sees软件能很好地模拟GHPFRCC结构,加固厚度越大,极限承载力越大;极限压缩应变选值在-0.002^-0.006之间最为合适,在模拟过程中,选择积分点为5模拟的更精准。 展开更多
关键词 OPEN sees 绿色高性能纤维增强水泥基复合材料 柱子 抗震性能 加固火损 数值模拟
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基于Open Sees的FRP加固RC圆柱拟静力实验数值分析 被引量:1
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作者 丁辉 顾冬生 《山东农业大学学报(自然科学版)》 北大核心 2019年第2期216-220,共5页
纤维增强塑料(Fiber Reinforced Polymer简称FRP)加固钢筋混凝土圆柱(Reinforced Concrete简称RC)提高其抗震性能得到广泛运用,模拟FRP加固钢筋混凝土圆柱动力荷载作用下的非线性滞回反应是桥梁抗震研究的重要内容。以6个FRP加固圆形钢... 纤维增强塑料(Fiber Reinforced Polymer简称FRP)加固钢筋混凝土圆柱(Reinforced Concrete简称RC)提高其抗震性能得到广泛运用,模拟FRP加固钢筋混凝土圆柱动力荷载作用下的非线性滞回反应是桥梁抗震研究的重要内容。以6个FRP加固圆形钢筋混凝土桥墩柱的拟静力实验结果为依据,基于Open Sees中的非线性梁柱单元、零长度单元,建立了考虑弯曲变形、粘结滑移变形的桥墩柱抗震数值分析模型,同时考虑FRP及箍筋对混凝土的共同约束作用,选用吴刚强化模型作为混凝土强度依据,在对实验验证的基础上,进行参数分析。数值模拟结果与实验结果对比表明:吴刚强化模型计算的混凝土应力应变合理,纤维单元模型对加固柱的滞回曲线有较好的模拟,且能体现柱在加载过程中刚度、强度的变化,FRP加固量、轴压比、剪跨比对加固柱的承载力及破坏位移角有一定的影响。 展开更多
关键词 FRP加固钢筋混凝土圆柱 轴压比 OPEN sees 纤维模型
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基于OpenSees的RC柱数值模拟与验证 被引量:2
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作者 张松柏 《四川建材》 2014年第6期67-69,共3页
利用Open Sees有限元分析软件对已有的钢筋混凝土柱低周往复试验进行数值模拟,选择不同轴压比和不同配箍特征值的钢筋混凝土柱,将数值模拟结果和试验结果进行对比分析,最终得到采用Open Sees有限元分析软件模拟钢筋混凝土柱时,材料模型... 利用Open Sees有限元分析软件对已有的钢筋混凝土柱低周往复试验进行数值模拟,选择不同轴压比和不同配箍特征值的钢筋混凝土柱,将数值模拟结果和试验结果进行对比分析,最终得到采用Open Sees有限元分析软件模拟钢筋混凝土柱时,材料模型和分析模型的适用性。为钢筋混凝土构件数值模拟提供一定的参考依据。 展开更多
关键词 Open sees 钢筋混凝土柱 低周反复 数值模拟
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基于OpenSees的墩柱CFRP抗震加固研究 被引量:1
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作者 李晓蒙 《山西建筑》 2016年第16期29-31,共3页
以某墩柱的拟静力试验为基础,通过Open Sees软件,总结了CFRP抗震加固方法,对采用不同层数CFRP加固的墩柱的抗震性能进行了分析,结果表明,采用含纤特征值来表述CFRP加固量的方法简单、有效、合理,经CFRP加固后墩柱的水平承载力、延性水... 以某墩柱的拟静力试验为基础,通过Open Sees软件,总结了CFRP抗震加固方法,对采用不同层数CFRP加固的墩柱的抗震性能进行了分析,结果表明,采用含纤特征值来表述CFRP加固量的方法简单、有效、合理,经CFRP加固后墩柱的水平承载力、延性水平均得到了改善,但增加值不与CFRP层数成正比。 展开更多
关键词 拟静力试验 CFRP Open sees 抗震加固
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有关互动电影游戏的文本分析——以《She Sees Red》为例 被引量:1
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作者 王艺伟 《科技传播》 2021年第15期101-103,共3页
互动电影兼具游戏性与电影质感,是电影与数字融合趋势下的代表产物。2019年7月,真人惊悚互动游戏《She Sees Red》在Steam上正式发售,热度颇高。文章以《She Sees Red》为例,主要从该游戏的叙事结构、脚本设计、镜头剪辑3个方面及该游... 互动电影兼具游戏性与电影质感,是电影与数字融合趋势下的代表产物。2019年7月,真人惊悚互动游戏《She Sees Red》在Steam上正式发售,热度颇高。文章以《She Sees Red》为例,主要从该游戏的叙事结构、脚本设计、镜头剪辑3个方面及该游戏存在的不足进行分析研究,探讨互动电影游戏制作时的提升技巧以及未来的发展前景。 展开更多
关键词 互动电影 游戏 《She sees Red》
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Job Creation Sees Global Cooperation
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作者 Jean-Louis Gregoire 《China's Foreign Trade》 2016年第5期17-,共1页
I am very impressed by President Xi Jinping’s speech.He talked a lot about innovation,greenness and economic growth,and raising people’s expectations for the future.What is more interesting to me is that China will ... I am very impressed by President Xi Jinping’s speech.He talked a lot about innovation,greenness and economic growth,and raising people’s expectations for the future.What is more interesting to me is that China will not grow alone.It will work hard with other countries to promote economic recovery and create more jobs. 展开更多
关键词 MORE Job Creation sees Global Cooperation
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ZTE Sees Sizable Increases in Worldwide Patent Applications in 2009 and Tops China's Patent Application Ranking List
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作者 ZTE Corporation 《ZTE Communications》 2010年第1期F0002-F0002,共1页
ZTE Corporation has reported that the Patent Protection Association of China (PPAC) recently released patent application rankings for 2009 with ZTE, Huawei and Hongfujin claiming the top three spots on the ranking l... ZTE Corporation has reported that the Patent Protection Association of China (PPAC) recently released patent application rankings for 2009 with ZTE, Huawei and Hongfujin claiming the top three spots on the ranking list. 展开更多
关键词 ZTE sees Sizable Increases in Worldwide Patent Applications in 2009 and Tops China’s Patent Application Ranking List PPAC
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An "Ordinary" Man Sees Extraordinary Changes
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作者 By staff reporter LI FUGEN 《China Today》 1999年第10期34-35,共2页
关键词 Man sees Extraordinary Changes AN Ordinary
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IMF Sees Long Path to Asian Recovery
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《China Textile》 2009年第6期50-52,共3页
The global crisis has hit Asia hard,and it may take some time before the region’s economies recover,the International Monetary Fund(IMF) commented in its latest report on Asia and the Pacific.
关键词 IMF sees Long Path to Asian Recovery ASIA PATH THAN LONG
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Islamabad Sees Deals With China
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《China Textile》 2009年第12期17-17,共1页
China and Pakistan are discussing a variety of deals, including a possible investment by China Petrochemical Corp. in a major Pakistani coal reserve, a senior Pakistani government official said Tuesday.
关键词 LINK Islamabad sees Deals With China
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Ringing in the Changes Unprecedented State Council restructuring sees creation, cuts and merges of ministries
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作者 Yuan Yuan 《ChinAfrica》 2018年第4期16-17,共2页
China's Xinhua News Agency calls it the "biggest government reshuffle in years" in what is seen as a dra matic continuation of the previous seven rounds of cabinet restructuring that began in 1982.
关键词 Ringing in the Changes Unprecedented State Council restructuring sees creation cuts and merges of ministries
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Korea's Textile and Clothing Industry still Sees China as a Major Trading Partner
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作者 Dennis K.Zhao 《China Textile》 2009年第6期36-41,共6页
On June 2-3,International Textile and Clothing Bureau held its inaugural meeting for Private Sector Consultative Committee(PICC)in Geneva on June 2-3 to discuss the issues of common concerns and impacts that challenge... On June 2-3,International Textile and Clothing Bureau held its inaugural meeting for Private Sector Consultative Committee(PICC)in Geneva on June 2-3 to discuss the issues of common concerns and impacts that challenged textile and clothing sectors against global economic recession. 展开更多
关键词 Internation Meeting with Mr.Myeng-keun Ha V.Chairman of Korea Federation of Textile industries at the First Private Sector Consultative Committee’s Meeting chaired by ITCB Korea’s Textile and Clothing Industry still sees China as a Major Trading Partner
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Domestic E-commerce Logistics Sees Rapid Growth
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作者 Richard Zhu 《China's Foreign Trade》 2014年第5期42-42,共1页
Due to strong consumer de-mand,favorable policies,and large-scale capital in-flow,domestic e-commerce logistics is seeing rapid growth,accord-ing to a recent report by Roland Berger Strategy Consultants.
关键词 COMMERCE favorable LOGISTICS Berger SEEING OPERA c
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China's Economy Sees Stable Growth in H1
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作者 Zhu Zijun 《China's Foreign Trade》 2014年第8期8-9,共2页
China’s economy is seeing a stable growth in the first half of 2014 amid challenges after a bumpy start in the beginning of this year.Data from the National Bureau of Statistics(NBS)shows that China’s GDP in the fir... China’s economy is seeing a stable growth in the first half of 2014 amid challenges after a bumpy start in the beginning of this year.Data from the National Bureau of Statistics(NBS)shows that China’s GDP in the first half of this year reached 26,904.4 billion yuan,up7.4 percent year on year.Growth in the second quarter accelerated to 7.5percent,up from 7.4 percent in the first quarter. 展开更多
关键词 QUARTER SEEING BEGINNING challenges BUREAU expande
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Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory
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作者 Sizhong Zou Zhenyu Jin +2 位作者 Kaifan Ji Jun Xu Lei Yang 《Astronomical Techniques and Instruments》 CSCD 2024年第2期128-139,共12页
Strong atmospheric turbulence reduces astronomical seeing,causing speckle images acquired by ground-based solar telescopes to become blurred and distorted.Severe distortion in speckle images impedes image phase deviat... Strong atmospheric turbulence reduces astronomical seeing,causing speckle images acquired by ground-based solar telescopes to become blurred and distorted.Severe distortion in speckle images impedes image phase deviation in the speckle masking reconstruction method,leading to the appearance of spurious imaging artifacts.Relying only on linear image degradation principles to reconstruct solar images is insufficient.To solve this problem,we propose the multiframe blind deconvolution combined with non-rigid alignment(MFBD-CNRA)method for solar image reconstruction.We consider image distortion caused by atmospheric turbulence and use non-rigid alignment to correct pixel-level distortion,thereby achieving nonlinear constraints to complement image intensity changes.After creating the corrected speckle image,we use the linear method to solve the wavefront phase,obtaining the target image.We verify the effectiveness of our method results,compared with others,using solar observation data from the 1 m new vacuum solar telescope(NVST).This new method successfully reconstructs high-resolution images of solar observations with a Fried parameter r0 of approximately 10 cm,and enhances images at high frequency.When r0 is approximately 5 cm,the new method is even more effective.It reconstructs the edges of solar graining and sunspots,and is greatly enhanced at mid and high frequency compared with other methods.Comparisons confirm the effectiveness of this method,with respect to both nonlinear and linear constraints in solar image reconstruction.This provides a suitable solution for image reconstruction in ground-based solar observations under strong atmospheric turbulence. 展开更多
关键词 Astronomical seeing Solar telescopes Solar observatories Astronomy image processing Phase error DECONVOLUTION
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Who Is Doing The Threatening? Japanese foreign minister sees China as a threat while China issues its white paper on peaceful development
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作者 NI YANSHUO 《Beijing Review》 2006年第4期10-13,共4页
On entering the new century, Sino-Japanese relations are at their lowest level in the 33 years since the two countries normalized their diplomatic relations in 1972. Bilateral high-level exchanges have been suspended ... On entering the new century, Sino-Japanese relations are at their lowest level in the 33 years since the two countries normalized their diplomatic relations in 1972. Bilateral high-level exchanges have been suspended for nearly five years for a variety of reasons. 展开更多
关键词 Japanese foreign minister sees China as a threat while China issues its white paper on peaceful development Who Is Doing The Threatening
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Xinjiang Sees Rapid Progress
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《Beijing Review》 2009年第39期47-47,共1页
White paper emphasizes national unity and stability are the "lifeblood" for Xinjiang’s development The Chinese Government on September 21 published a white paper on development and progress in northwest Ch... White paper emphasizes national unity and stability are the "lifeblood" for Xinjiang’s development The Chinese Government on September 21 published a white paper on development and progress in northwest China’s 展开更多
关键词 Xinjiang sees Rapid Progress
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NBAA Sees Benefits with East Coast Airspace Redesign
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作者 Kerry Lynch 《今日民航》 2019年第5期96-96,共1页
The FAA’s airspace optimization initiative on the U.S.East Coast is expected to bring incremental relief to constraints in business aviation travel beginning with changes taking place this month,according to NBAA.Und... The FAA’s airspace optimization initiative on the U.S.East Coast is expected to bring incremental relief to constraints in business aviation travel beginning with changes taking place this month,according to NBAA.Under the FAA’s Northeast Corridor Atlantic Coast Routes (NEC ACR) initiative,"operators will see significant changes ahead of the project’s targeted November 2020 completion date,"the association said. 展开更多
关键词 NEC FAA NBAA sees BENEFITS with EAST COAST Airspace REDESIGN
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George Sees Stars (IV)
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《考试与评价(英语七年级专刊)》 2009年第10期27-28,共2页
关键词 中学 英语教学 教学方法 阅读 英语考试 《George sees STARS
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