The performance and validity of cbfs and ebfs are evaluated and their design method and course is presented on the basis of the experimental research and analysis 在试验研究和分析的基础上，讨论了中心支撑体系和偏心支撑体系各自的适用范围和受力特点，提出了中心支撑和偏心支撑的设计过程与方法。
2 a systematic research is done on the lateral behavior of braced steel frame system and the nonlinear behavior of concentrically braced frames ( cbfs ) and eccentrically braced frames ( ebfs ) is analyzed 2对支撑体系的抗侧力性能进行了系统的研究，对中心支撑体系和偏心支撑体系的非线性性能进行了简化分析。
Nonlinear analysis are conducted on cbfs and ebfs with numerical technology in this paper , discussed stress of frame under varial loading conditions . link can dissipate 90 percent of seismic energy 本文还通过数值模拟对中心支撑框架和偏心支撑框架进行非线性分析，讨论各个受力阶段框架的应力分布情况，完善试验研究。
Analyzed the stiffness , strength , ductility and dissipation of frame , etc . the performance and validity of cbfs and ebfs are evaluated and their design method and course is presented on the basis of the experimental research and analysis 研究中心支撑框架和偏心支撑框架在低周往复荷载作用下的抗侧力性能，分析框架的刚度、强度、延性以及耗能能力等。
Eccentrically braced frames have the advantages of both moment - resisting frames and concentrically braced frames . this system can provide high elastic stiffness and large inelastic energy dissipation capacity in resisting lateral loads caused by seismic activity 偏心支撑框架综合了抗弯框架和中心支撑框架的优点，能够提供很大的弹性刚度和非弹性能量耗散能力，以抵抗地震作用产生的侧向力。
Eccentrically braced frames ( ebfs ) combines the strength and stiffness of concentrically braced frames ( cbfs ) with the inelastic behavior and energy dissipation of moment - resisting frames , especially inelastic deformation of link absorbs seismic energy 偏心支撑框架结合了中心支撑框架的强度、刚度高和普通抗弯框架的延性、耗能性能好的优点，通过耗能梁段的非弹性变形耗散大量输入结构的地震能量。
In order to improve the buckling performance of brace , make in earthquake occurrence , no buckling of brace will take place , as to traditional concentrically braced frame put forward a new system can avoid brace buckling , called buckling restrained braced frame 为了改善支撑的屈曲性能,使得在地震作用时,支撑不发生侧向屈曲,相对于传统中心支撑框架提出了一种新的可以避免支撑屈曲的体系,称为防屈曲支撑框架。
On the basis of experimental data , this paper presents an empirical criterion with its algorithm patterns , which may be included in the dynamic analysis of concentrically braced structures to predict the fracture of welded i - section bracing members 本文在焊接工字形钢支撑低周疲劳试验研究基础上，提出了一种可用于框架中心支撑体系非线性动力时程分析中钢支撑疲劳损伤评估的经验方法，并给出了相关步骤的算法流程。
On this basis , the further research of anti - seismic of buckling restrained braced frame is performed . derive additional damping and influence of buckling restrained brace to column axis strength . example proved , as to concentrically braced frame , buckling restrained braced frame has better anti - seismic performance 在此基础上,将此种支撑应用于框架中,对防屈曲支撑框架的抗震性能作了进一步的研究,推导了防屈曲支撑的附加阻尼比以及防屈曲支撑对柱附加轴力的影响,并且通过对一个算例进行非线性时程分析验证了相对于普通中心支撑框架,防屈曲支撑框架具有更好的抗震性能。
In this paper , embedded system will be introduced firstly , including the definition of the embedded system , development and application of microprocessor in embedded system , the category , history and development of the embedded operation system . architecture of the system will be discussed secondly , including the service of the operation system and the function of all models ; the file server system which bases on flash is the core model , the paper describes its design purpose , architecture and function . the driver software model , especially on lcd , keyboard will be described too ; finally i will discuss the mmi engine that provides the service for the mmi programmer to complete the menu function 本文首先介绍了嵌入式系统，嵌入式处理器的发展与应用，嵌入式操作系统，嵌入式系统的发展，国内移动终端的发展近况以及本文的理论与实践背景；接着阐述了系统的总体结构，概略介绍了嵌入式操作系统提供的服务和各个模块的功能；随后详细介绍了基于flash的嵌入式文件系统的目标、功能、设计思想和实现，外围设备的驱动程序的设计与实现，重点介绍了lcd 、键盘的驱动程序的目标、功能和设计以及本系统人机接口( mmi )的中心支撑软件模块mmi引擎的设计与实现，它为mmi程序员完成菜单功能的实现提供了有力的支持。
