自适应式平衡调整模块探讨     

杨桂芳 《淮南职业技术学院学报》2007,7(4):93-96

模块在机构上继承了在静态步态中使用的结构,并在此基础上加入了一套独立设计的平衡调整模块,设计了自适应式动态步态模块,对模块的进行了探讨,对步行机器人实现仿人的步行方式具有意义。  相似文献   

Approach for analyzing the ultimate strength of concrete filled steel tubular arch bridges with stiffening girder   总被引：2，自引：0，他引：2  

ZHANG Zhi-cheng XIE Xu ZHANG He CHEN Heng-zhi 《浙江大学学报(A卷英文版)》2007,8(5):682-692

A convenient approach is proposed for analyzing the ultimate load carrying capacity of concrete filled steel tubular (CFST) arch bridge with stiffening girders. A fiber model beam element is specially used to simulate the stiffening girder and CFST arch rib. The geometric nonlinearity, material nonlinearity, influence of the construction process and the contribution of prestressing reinforcement are all taken into consideration. The accuracy of this method is validated by comparing its results with experimental results. Finally, the ultimate strength of an abnormal CFST arch bridge with stiffening girders is investigated and the effect of construction method is discussed. It is concluded that the construction process has little effect on the ultimate strength of the bridge.  相似文献   

阶梯教室部分预应力框架梁工程的设计     

冯晓彤 《金陵科技学院学报(社会科学版)》2001,16(1):21-23

通过本工程的预应力设计实例 ,简要介绍部分预应力框架梁的设计步骤和要点及对施工的要求  相似文献   

碳纤维布加固钢筋砼吊车梁抗弯疲劳性能试验     

石启印  李爱群  惠卓 《东南大学学报》2007,23(4):561-565

为研究碳纤维布(CFRP)对加固后钢筋混凝土梁的抗弯疲劳性能的影响,进行了3根CFRP加固梁及1根对比梁的抗弯疲劳试验.研究了碳纤维布加固方式、构件使用荷载等参数对碳纤维布加固损伤钢筋混凝土吊车梁的抗弯疲劳性能影响.试验研究表明:采用碳纤维布加固后,构件裂缝的宽度减小50.2%~66%,发展速度也得到控制,钢筋应力减小24.1%~28.2%,构件的刚度提高14.9%~16.1%.依据试验结果,从现有规范中关于构件刚度计算方法出发,进行了CFRP加固钢筋混凝土吊车梁的疲劳刚度计算分析,该计算方法可用于吊车梁加固工程设计.最后给出了CFRP加固梁的疲劳设计的合理化建议.  相似文献   

Performance measurement of broadband, wide-angle polarizing beam splitter   总被引：2，自引：1，他引：2  

CHEN Wei-bin ZHENG Zhen-rong GU Pei-fu ZHANG Yue-guang 《浙江大学学报(A卷英文版)》2007,8(2):176-179

INTRODUCTION A polarizing beam splitter (PBS) cube is an op- tical element used in projection display systems where light must be spatially separated into or- thogonal linear polarizations. PBS is a key component in any liquid crystal projectors, whether they are transmitting or reflective. In reflective mode liquid crystal light valve projector, PBS is often used as both polarizer and analyzer. PBS transmits p-polarized light and reflects s-polarized light (You et al., 2005). The im…  相似文献   

高托、蜂窝式、钢——砼组合梁的计算特点     

杨兰新  康伟志 《茂名学院学报》1996,(1)

该文为“高托、蜂窝式钢—砼组合梁的试验分析”一文的姐妹篇,在前文的基础上,着重论述了该新型组合梁体的计算特点及理论与实验数据对比.  相似文献   

A/r/tography as a Pedagogical Strategy: Entering Somewhere in the Middle of Becoming Artist     

Daniel T. Barney 《The International Journal of Art & Design Education》2019,38(3):618-626

A/r/tography is often considered to be an arts and education practice‐based research methodology, but this author explores a/r/tography as a pedagogical strategy that has informed the author's artistic practice and pedagogical experiments. The author tracks his own journey of entering into an a/r/trographic world and where that entering has positioned him as an artist and educator and then moves on to speculate a possible arts education as his a/r/tography contorts into conceptual doings. Walking is used as a concept, as a process or method to generate more concepts, and as an art form with pedagogical potential within several undergraduate and one graduate course at the author's university. The author also investigates alongside or in concert with the courses he gives. The author equates artistic concepts, like walking, with theoretical and philosophical arguments, assertions and propositions. Artistic processes are equated with methods and methodological concerns, even though these systems of inquiry and knowing may be idiosyncratic in artistic inquiry. And finally, an art form can be understood in research terms as a type of research product or creation, that can be an event, performance, or a continuation of these as write ups or presentations, that are shared with the general or a particular public.  相似文献   

多功能气候试验室模拟效果研究   总被引：1，自引：0，他引：1  

王建东  张俊芝  鲁列  沈妙金  曾凡信 《实验技术与管理》2011,28(4):42-45

采用多功能气候试验室模拟自然条件下的腐蚀环境,将钢筋混凝土梁放入试验室,进行不同时间段的腐蚀试验,测出氯离子在混凝土不同深度处的含量,再与现场水工混凝土中氯离子的分布情况进行比较。结论表明,多功能气候试验室模拟自然环境的试验完全可行,而且效果比较好。  相似文献   

植物启动子克隆技术     

尹振君  王秋平  吴延东  李合祥  田景汉 《实验技术与管理》2011,(8)

启动子作为基因表达调控的重要元件,成为分子生物学研究领域的热点。随着PCR技术的发展,从已知序列出发,克隆未知序列的方法日益成熟。综述了近年来植物启动子克隆技术的发展情况,介绍了基于PCR的染色体步行技术,包括:反向PCR(Inverse PCR)、随机引物PCR(randomly primed PCR)、连接介导PCR(ligation-mediated PCR)等方法,重点介绍了TAIL-PCR技术,并对该技术方法的优点及局限性进行了探讨。  相似文献   

独柱墩匝道桥抗倾覆能力分析和构造措施研究     

施颖  林龙  陈国永  荆伟伟 《科技通报》2015,(7)

滨海区域河网密布,傍河路堤十分多见。由于地基十分软弱,沿河路堤在建成过程中各种工程病害如滑移、裂缝等十分常见,并经常导致工期拖延,造价增加。本文针对工作上碰到的一些典型案例,对病害的成因、稳定分析技术、预防与控制技术等要素进行了归纳总结,以资借鉴。  相似文献