1) stiffness reduction factor
刚度折减系数
1.
The simplified structural analysis and design method employing stiffness reduction of member bars,has been accepted by Chinese Standard, in which second-order effects already been considered through elastic finite element analysis,and its accuracy mostly depends on the rationality of the stiffness reduction factor.
鉴于该规范尚缺乏确定排架柱相应折减刚度的分析研究成果,以单跨工业厂房变阶排架柱为研究对象,通过对一系列典型排架结构算例进行最不利荷载条件下的非弹性有限元全过程模拟,并采用折减刚度的弹性二阶分析所得柱顶侧向位移与非弹性有限元模拟的柱顶位移等效为条件,选定了适用于排架柱的刚度折减系数后,再以所选刚度折减系数完成的弹性二阶分析所求得的各控制截面内力与非弹性有限元模拟结果的相符性证实了初选排架柱刚度折减系数的合理性。
2.
In the proper ascertainment of the value of stiffness reduction factor considering non-elastic characteristic, it is advisable to properly choose the checking computation method of the stiffness reduction on the basis of a comprehensive analysis of RC frame.
考虑非弹性特征的钢筋混凝土框架杆件刚度折减系数的合理取值应以钢筋混凝土框架非弹性分析为基础,按框架顶点位移和各层层间位移相近似的原则来确定。
2) coefficient of the link beam's stiffness
连梁刚度折减系数
3) discounting coefficients of the bend stiffness
抗弯刚度折减系数
4) Stiffness degradation
刚度折减
1.
The "element disappear" technique is abandoned and the stiffness degradation of matrix and yarns are both in particular orientations.
分析中抛弃了以往损伤研究中采用的"单元消失"技术,对破坏的基体单元和纤维束单元均按特定方向进行刚度折减。
5) stiffness reduction
刚度折减
1.
The iterative calculation method of stiffness reduction for steel-concrete with cracks was obtained.
针对双曲拱桥普遍开裂状况,基于截面平衡法原理,通过建立开裂截面内部平衡方程,并结合有限元通用程序,推导出钢筋混凝土开裂截面刚度折减的迭代计算方法。
2.
Based on evaluation of the basic principle and error of the modal pushover analysis method,an improved method is suggested by selecting rational values of stiffness reduction parameters of beams and columns in a reinforced concrete frame corresponding to the global target displacement ductility ratio.
在对Modal Pushover方法的原理及误差进行评价的基础上,结合与整体目标位移延性系数相对应的钢筋混凝土框架构件刚度折减系数的合理取值,提出了Modal Pushover的改进方法。
6) reduced rigidity
折减刚度
1.
A new method is presented in which the slip effect is taken into account based on the reduced rigidity method of composite beams.
在钢-混凝土组合梁挠度计算的折减刚度法基础上,考虑组合板自身的受力特点,提出了考虑滑移效应的组合板折减刚度公式。
补充资料：轧机刚度系数
轧机刚度系数
rigidity coefficient of rolling mill
zhalj gongdu xishu轧机刚度系数(rigidity eoeffieient of rollingmill)使轧机产生纵向单位弹性变形所需施加的轧制力。其几何意义为轧机弹性曲线直线段的斜率，记作 dP K~~共气 “m ds式中d尸为轧制力增量;ds为辊缝增量;Km为轧机刚度系数，其量纲为kN/mm。因此，某一轧机的刚度系数可根据轧机的弹性曲线的斜率计算确定。实际上，由于轧制时轧棍和整个车L机在负荷作用下温度升高，辊缝发生变化而成为一个变值，轧辊的圆度和安装偏差会造成轧件的纵向厚度偏差呈高频周期性变化，轧件、一公淤叮派李点- 翻~香爪~~咋今粉~ 轧钢机按机架排列分类 a一单机架;吞一横列式;一顺列式;d一棋盘式;~半连续式;了一连续式宽度也会影响轧辊的弯曲弹性变形等，所以为了提高轧件厚度控制的精确度，轧机的刚度系数一般都通过现场实测方法得到。但也可以在用解析方法分别算出轧辊的刚度系数K，、机架的刚度系数KZ、安全臼的刚度系数K3、压力传感器的刚度系数K4等之后，按下式计算 1 K，~— 1 .1 .1 .1 分+分十含+亡 K:1 KZ’K3’K4因此，K。又称等效刚度。 (赵以相)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条