摩擦与粘性流体耗能器串联体系动力分析

采用粘性屈服模型来模拟摩擦耗能器的力－速度关系，建立了摩擦与粘性流体耗能器串联耗能体系的动力分析方法．为考虑框架杆件和支撑材料的几何非线性，采用增量型Ｒｏｓｅｎｂｒｏｃｋ二级三阶半隐式Ｒｕｎｇｅ－Ｋｕｔｔａ法求解动力方程．比较了仅有摩擦耗能器体系与串联组合耗能体系的减振效果，分析了粘性流体耗能器参数对组合耗能体系减振效果的影响。     

摩擦与粘性流体耗能器串联体动力分析

采用粘性屈服模型来模拟摩耗能器的力－速度关系，建立了摩擦与粘性流体耗能器串联耗能体系的动力分析方法，为考虑框架杆件和支撑材料的几何非线性，采用增量型Rosenbrock二级三阶半隐式Runge-Kutta法求解动力方程，比较了仅有摩擦耗能器体系与串联组合耗能体系的减振效果，分析了粘性流体耗能器参数对组合耗能体系减振效果的影响。     

钢屈服—摩擦复合耗能器的性能研究

本文提出了“综合利用不同耗能原理和机制来设计新型耗能器”的思想,研究开发了钢屈服－摩擦复合耗能器,并对其进行了性能试验和对比试验,考察了耗能器的工作性能和耗能性能。给出了耗能器的恢复力模型,研究结果表明,钢屈服－摩擦复合耗能器利用钢屈服滞回和摩擦两种机制耗能,具有稳定的工作性能,耗能能力强且可调节,构造简单,形状紧凑,体积小,造价低,制作与安装方便,是一种有广阔应用前景的新型耗能减震装置。     

高层拟粘滞摩擦耗能结构的试验与参数研究

首先对一座安装有拟粘滞摩擦耗能器的１：８的１６层三跨钢结构模型、该结构未装耗能器的空框架以及装有普通支撑的框架模型进行了振动台地震模拟试验和动力特性试验,试验结果表明拟粘滞摩擦耗能器有良好的减振效果。然后对影响耗能体系减振效果的主要参数进行了数值研究,讨论了支撑刚度、初始起滑力和耗能器接触刚度对减振效果的影响。     

拟粘滞摩擦耗能器的性能试验与分析

在分析粘滞耗能器的优缺点和Ｐａｌｌ摩擦耗能器构造特点的基础上,提出了拟粘滞摩擦耗能器,进行了拟粘滞摩擦耗能器的滞回特性试验和疲劳性能试验,试验结果表明,拟粘滞摩器基本实现了粘滞耗能器的主要力学特征：在试验结果的基础上建立了拟粘滞摩擦耗能器的恢复力模型。     

软钢屈服耗能器的疲劳性能和设计准则

通过Ｘ形钢板屈服耗能器的疲劳试验研究和理论分析，建立了耗能器钢板的弹塑性应变分析方法。在选择恰当的疲劳模型的基础上，确定了应变疲劳参数，建立了Ｘ形和三角形钢板耗能器的疲劳设计准则，为这两种钢板屈服耗能器的参数设计提供了依据。     

摩擦型与软钢屈服型耗能器的性能与减振效果的试验比较

本文通过两类四种百余个耗能器（其中摩擦类型的两种，普遍摩擦型和Ｐａｌｌ摩擦型；软钢屈服类型的两种：Ｘ钢板和三角钢板屈服型）的静力反复加载和低周疲劳试验，进一步了解这些耗能器的滞回特性和疲劳性能。其次，通过分别安装上述四种耗能器的单层剪切型钢框架模型在输入地震动分别为ＥＩＣｅｎｔｒｏ、Ｔａｆｔ和天津记录等五十余种工况下的振动台试验，较全面地揭示了这些耗能器的减振效果。最后，在试验的基础上较好地建立了     

耗能减震结构的抗震设计原则与设计方法

根据国内外耗能减震器和耗能减 研究成果,结合我国正在修订的建筑结构抗震设计规范,提出了耗能减震结构的实用抗震设计方法。     

钢筋砼摩擦耗能支撑框架结构的单元刚度和力学模型分析

为研究钢筋砼摩擦耗能支撑框架结构的动力反应性能 ,对其中的摩擦耗能器单元和框架杆单元的单元刚度和力学模型做了分析。钢筋砼摩擦耗能支撑单元由支撑杆单元和钢板—橡胶摩擦耗能器单元组成 ,支撑单元可取空间杆单元 ,摩擦耗能器单元为平面应力矩形单元。摩擦耗能器单元的剪切恢复力曲线为理想的弹塑性曲线 ,根据耗能器单元的力学模型 ,可确定其在每一时刻的刚度 ;框架结构空间杆单元的恢复力模型采用双线型模型 ,根据杆单元的力学模型 ,可确定其在每一时刻的刚度。并利用所编制的程序对十层单榀两跨空间普通框架和摩擦耗能支撑框架在地震作用下进行了弹塑性反应时程分析 ,结果表明耗能支撑框架的顶层最大位移明显小于普通框架     

振戎中学食堂楼耗能减震分析与设计(Ⅰ)一反应谱法

本文采用耗能减震技术，根据建筑结构抗震规范规定的反应谱法，利用ＣＴＡＢ程序对云南省洱源县振戎中学食堂进行了抗震计算分析和设计验算．首先对未加耗能减震装置的空框架结构进行了小震下的位移和强度验算以及大震下的位移验算；其次，介绍了本工程选用的Ｔ字芯板摩擦耗能器的工作原理，并对耗能器进行了足尺性能试验；第三，根据工程结构的环境特点和建筑使用功能要求，确定了耗能减震方案；最后，对耗能减震结构进行了抗震验算和分析，结果表明，附加耗能器后的工程结构抗震性能得到了明显改善．     

Dynamic analysis of structures with Maxwell model

A numerical method has been developed for the dynamic analysis of a tall building structure with viscous dampers. Viscous dampers are installed between the top of an inverted V‐shaped brace and the upper beam on each storey to reduce vibrations during strong disturbances like earthquakes. Analytically, it is modelled as a multi‐degree‐of freedom (MDOF) system with the Maxwell models. First, the computational method is formulated in the time domain by introducing a finite element of the Maxwell model into the equation of motion in the discrete‐time system, which is based on the direct numerical integration. Next, analyses for numerical stability and accuracy of the proposed method are discussed. The results show its numerical stability. Finally, the proposed method is applied to the numerical analysis of a realistic building structure to demonstrate its practical validity.     

耗能减震结构的受力分析与层间弹塑性变形简化计算方法

本文研究了安装粘弹性耗能器结构在常遇地震作用下层间最大剪力的分配情况 ,给出了层间最大剪力在结构构件与耗能器之间按刚度分配原则进行假想分配后 ,所得假想层间构件力与层间最大构件力之间的关系 ,以及假想层间附加力与层间最大附加力之间的关系 ,探讨了罕遇地震作用下安装粘弹性耗能器结构与安装软钢耗能器结构的层间弹塑性变形简化计算方法。     

摩擦消能支撑钢框架结构的弹塑性地震反应时程分析

本文分析了摩擦消能支撑及框架主体结构弹塑性本构关系，并给出了动力时程分析的计算方法。同时，对六层钢框架模型做了各种工况下的地震反应时程分析。结果表明，摩擦消能支撑钢框架（FEDBF）比抗弯钢框架（MRF）的地震作用明显降低，尤其在强震作用下效果更加明显。     

Dynamic analysis method of a combined energy dissipation system and its experimental verification

A combined energy dissipation system is developed in this paper. In this system lead rubber dampers and their parallel connection with oil dampers are used in the braces of a structural frame. A dynamic analysis method of the system, including the modelling of the lead rubber damper and the oil damper, is proposed. In the analysis method, the restoring force characterestics of the lead rubber damper is simulated by the Bouc–Wen hysteretic model, and the behaviour of the oil damper is simulated by a velocity and displacement‐related model in which the contributions of the oil damper to the damping force and stiffness of the system are considered. A series of shaking table tests of a three‐storey steel frame with the combined energy dissipation system are carried out to evaluate the performance of the system and to verify the analysis method. The test and analysis show that the performance of the combined energy dissipation system is quite satisfactory and there is a good agreement between the analysis and test results, which indicates that the analysis method proposed in this paper is valid and suitable for the dynamic analysis of the combined energy dissipation system. Copyright © 2002 John Wiley & Sons, Ltd.     

Experimental evaluation of dynamic characteristics of seesaw energy dissipation system for vibration control of structures

Seesaw energy dissipation system (SEDS), a vibration control system used to provide enhanced seismic protection, has been proposed and investigated numerically. Because of its complicated arrangement, verification experiments are necessary to demonstrate the SEDS damping capacity. This paper presents the results of experimental investigation of the SEDS using fluid viscous dampers. Free vibration tests are conducted to demonstrate the SEDS damping capacity. Results of the free vibration test show that the SEDS has sufficient damping capacity for reduction of the seismic response of the frames. Parametric experimental investigations of the SEDS were conducted, the results of which demonstrate the effects of the system parameter on the damping capacity. Copyright © 2014 John Wiley & Sons, Ltd.     

消能支撑框架结构的低周往复水平荷载试验仿真分析方法

本文提出了低周往复水平荷载试验仿真分析方法，该法既不同于弹塑性地震反应时程分析，又不同于常见的弹塑性静力分析。它能模拟低周往复水荷载试验的过程，既避免了地震波频谱的影响又体现了水平荷载的往复作用，可用于计算结构和构件的滞回曲线、截面的屈服顺序及相应的荷载和位移，尤其适用于分析消能支撑框架结构等耗能减震结构。本文用此方法分析了在框架柱轴压比超过限值要求时消能支撑的作用。     

Simplified seismic fragility analysis of structures with two types of friction devices

This paper presents a method and results of seismic fragility estimation of frame structures with friction devices and with friction devices and restrictors. The seismic intensity parameter, defined as the mean value of the pseudovelocity spectrum in a specified periods band, is proved to allow the use of linear regression analysis of the response parameters of the considered non‐linear structures on seismic intensity. A simplified method of fragility estimation is proposed, based on the concept of ‘mean seismic excitation’ and linear regression of the seismic response parameters on seismic intensity parameter. The key risk contributors for the system with friction devices and for the system with friction devices and restrictors are identified on the basis of the fragility analysis, and recommendations for improvement of the seismic response of the respective systems are derived. The results of the fragility study show that when the initial ‘bare’ frame is retrofitted by rigidly connected bracings the effect is much lower than in the case of connecting the bracings by friction devices and especially by friction devices and restrictors. Copyright © 2000 John Wiley & Sons, Ltd.     

消能支撑框架结构设计方法探讨

本文提出了一种新的消能支撑框架结构设计方法，该方法能够实现罕遇地震下结构的目标位移控制，其主要设计思路是框架主体结构按非抗震设计或降低烈度进行抗震设计，消能支撑则由罕遇烈度地震下满足给定层间位移角限值的优化计算来确定。本文还给出了一个15层框架结构的设计算例，并把本文方法的设计结果与按常规方法的设计结果进行了比较。     

非线性黏滞阻尼减震结构基于位移的设计方法

结合我国抗震设计规范,提出非线性黏滞阻尼减震结构基于位移的设计方法.根据减震结构的特点,将其性能划分为使用良好、人身安全和防止倒塌3个水平,并用层间位移角限值予以量化;以简化的方法计算非线性黏滞阻尼器的等效阻尼比.在此基础上将结构转化为等效单自由度体系,利用基于位移的设计方法对非线性黏滞阻尼减震结构进行设计,通过算例,介绍用该方法对框架结构进行非线性黏滞阻尼减震设计的设计过程.实例分析表明,提出的非线性黏滞阻尼减震结构基于位移的设计方法是可行的,并且与时程分析得出的平均结果吻合较好,而且该方法简单实用,便于操作,能够控制减震结构在不同强度水准地震作用下的性能.