Analysis and study of the initial stiffness of top-seat angles connections 顶底角钢连接初始刚度的分析和研究
Influence of initial stiffness of contact element on deformation of deep foundation pit in soft soil 接触元初始刚度系数对软土深基坑变形的影响分析
The relations of m-r, initial stiffness, the yield strength, failure models, ultimate strength, seismic behaviors and characteristic of dissipation of energy were gained in this test 通过试验得到了各种连接在循环荷载作用的m-_r关系、连接初始刚度、连接屈服荷载、破坏形式、破坏荷载、抗震性能和耗能特性。
The relations of m-r, initial stiffness, the yield strength, failure models, ultimate strength, seismic behaviors and characteristic of dissipation of energy were gained in this test 通过试验得到了各种连接在循环荷载作用下的弯矩?转角关系、连接初始刚度、连接屈服荷载、破坏形式、破坏荷载、抗震性能和耗能特性。
But results from studis of r . hansan and n . kishi have shown that only when the initial stiffness of connection is more than 105.05 kn-m / rad, the joint is considered as rigid connection, otherwise it should be dealt with semi-rigid connction 但根据r.hansan和n.kishi等人的研究表明,当螺栓端板连接的初始连接刚度大于10~(5.05)kn-mrad时,这种连接才可以看作是刚性连接,否则就应将其视作半刚性连接。
The present findings of semi-rigid connections, the method for design of beam-to-column connections in the codes from china and other countries, and the character about semi-rigid connections, were briefly introduced in this paper . the simulated method of the m-r relation curve of semi-rigid connections, the computing equations about the initial stiffness and moment capacities of two kinds of top-seat angle connections, with and without double web-angle, were discussed 本文简要地介绍了半刚性节点的研究现状、各国规范梁柱连接的设计计算内容和方法、梁柱连接的类型和半刚性连接的特性,探讨了顶、底角钢、顶、底角钢带双腹板角钢两种半刚性连接的m-_r特征曲线及其拟合方法,顶底角钢连接、带双腹板顶底角钢连接初始刚度以及弯矩承载力的计算公式。
Based on the results, the eccentrically braced frame has the advantage of higher initial stiffness, load-bearing and energy consume ability . through the limit state analysis principle, the limit load was calculated by assuming the same destroy pattern of braced frame as that in the experiment . comparing the theory limit load with the measured, a good agreement was founded . it shows that the limit state analysis is really a practicable way analysed the reinforced concrete frame braced with eccentric steel 应用极限分析中的极值原理对偏心角钢支撑钢筋砼框架进行极限分析时,首先拟定与试验结果相一致的结构倒塌破坏模式,然后根据虚功原理建立了结构在极限状态时极限承载力的计算公式,从所求的权限荷载的理论值与实测值的比较来看,理论计算值与试验的实测值基本吻合,这说明利用本文拟定的结构破坏模式对偏心角钢支撑框架结构进行极限分析是一条可行的途径。
The component methodintroduced in eurocode3 are adopted mainly to analyse the behaviour of the joints . thebending bearing capacity and initial stiffness of connections are obtained by calculating andanalysing each component of joint . the calculating result is compared with that of experimentand finite element software ansys, and the comparison result indicates a good agreement . changing the parameter of each component, the effects of each parameter of joint on thebending bearing capacity and initial rotational stiffness of connections are analysed 主要采用欧洲规范ec3介绍的组件分析方法对节点性能进行分析研究,通过对各组件的受力性能分析计算得出整个节点的抗弯承载力及初始转动刚度,并将计算结果与试验结果及通用有限元分析软件ansys的分析结果进行了对比分析,计算结果与试验结果及有限元分析结果吻合较好。
So this paper includes some titles, such as : l . on the base of comparatively analysis about various design method to beam-to-column connections, some modified computing equations about the initial stiffness and ultimate moment capacities are presented, and the main factors influencing upon the behavior of connections are summed up 为此,本文的研究主要有以下几个方面:1在广泛分析研究国内外现行钢框架梁柱连接的受力机理的基础上,综合并修改了各种连接初始刚度以及弯矩承载力的计算公式。同时还介绍了影响各种连接类型性能的主要因素。