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楔形构件
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  tapered member
     The Element Striff Matrix of Thin-Wall Tapered Member
     薄壁楔形构件单元刚度矩阵
短句来源
     Element stiffness matrix which is applied in stability calculation of I - section thin - wall tapered member is deduced.
     推导了工字形截面薄壁楔形构件的稳定计算中的单元刚度矩阵,通过分析对比得出在楔形构件的稳定计算中,如果是弯扭失稳,则必须采用楔形单元矩阵。
短句来源
     Using the conception of equivalent cross-section, the formula of elastic carrying capacity at the larger end of the tapered member is suggested.
     采用楔形构件等效截面特性的概念,结合我国规范推导出以大头截面为计算截面的受弯稳定性计算公式;
短句来源
  tapered members
     Plastic Analysis of Frames with Tapered Members
     采用楔形构件框架的塑性分析(英文)
短句来源
     The utility of this approach in structural analysis not only consider the effects of axial force and shear deformation, but also reduce the number of element and degree of freedom. In other words, it can improve the accuracy and speed of structural analysis comprising tapered members.
     运用此方法,除可以考虑轴力和剪切变形的影响外,还可以减少结构分析中的单元数和自由度,提高包含楔形构件的结构分析的精度和速度。
短句来源
     The displacement mode of a tapered beam is derived according to the tapered members with I sections used very often for steel structures, on the basis of which corresponding shape function and stiffness matrix are obtained by finite element theory and a symbolic software.
     针对钢结构中常用的工字形截面楔形构件 ,推导出了楔形梁的位移模式 ,并在此基础上 ,用有限元原理 ,通过符号计算软件 ,求得相应的形函数与刚度矩阵。
短句来源
     The rotational restraints of beams to columns are derived when the portal frame buckles in a non-sway mode. The beams may be composed of multiple segments of tapered members.
     根据单段楔形构件的四个约束刚度系数,对单段、两段、三段变截面构件组成的钢梁在刚架发生无侧移失稳时对钢柱的转动约束进行分析,给出了高精度的计算公式。
短句来源
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  tapered element
To monitor the initial stage of the MWNTs growth process, we used a tapered element oscillating microbalance (TEOM).
      
Daily sampling of atmospheric PM10 particulate was carried out using a continuously weighing, Tapered Element Oscillating Microbalance (TEOM) equipped with a PM10 size selective inlet.
      
In addition, much finer time resolution measurements (minimum sampling frequency of 30 minutes) are made using a tapered element oscillating microbalance (TEOM) PM10 mass monitor.
      
Particle mass was measured using a Tapered Element Oscillating Microbalance (TEOM).
      
Tapered element oscillating microbalance measured the particle mass concentration and Fourier transform infrared spectroscopy was used to monitor relevant gas phase species.
      
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  tapered members
Current procedures for estimating effective length factors for web-tapered members rely heavily on the use of charts and graphs.
      
This modification allows the expression to be applied to web-tapered members with good accuracy.
      
The FRP glulam covered in this criteria is limited to solid prismatic or tapered members bonded with full-length reinforcements without pre-tension.
      


In this paper an approximate moment of inertia is used to take over the real value of tapered member,so as to avoid the dis -advantageous factors of taperednmember.With the approximate moments of inertia the stiff matrix of tapered member is obtained .It is very easy to calculate the internal forces of frame with tapered members.

利用近似截面惯性矩代替楔形杆的实际惯性矩,从而可直接得到楔形构件的单元刚度矩阵,便于计算带楔形构件的刚架的内力.

With the study of the two Regulations for Light weight Steel already published and combined with the engineering practices,this article has been written in an attempt to tackle the main methods leading to lightening of the light weight steel structures,mainly the portal frames,including the plastic designs,the utilization of post buckling strength of I shaped cross section webs,the application of tapered members and the variable cross section members,the employment of rocking columns in multiple span frames...

With the study of the two Regulations for Light weight Steel already published and combined with the engineering practices,this article has been written in an attempt to tackle the main methods leading to lightening of the light weight steel structures,mainly the portal frames,including the plastic designs,the utilization of post buckling strength of I shaped cross section webs,the application of tapered members and the variable cross section members,the employment of rocking columns in multiple span frames and also considering the mutual restricted effect of the structural systems and the skin effect,etc.

通过对已颁布的二本轻钢规程的学习,并结合工程实践,试论述轻钢结构,主要是门式刚架设计轻量化的若干主要途径,包括塑性设计,工形截面腹板屈曲后强度利用,楔形构件和变截面构件的应用,把中柱设计成摇摆柱,考虑结构系统相互约束作用和蒙皮效应等。

Elastic out-of-plane buckling of doubly symmetric hinged I-column with tapered web is studied in this paper.Previous formulae [1,2] took the web ratio factor into the coefficient of length,regarding web-tapered member as a uniform one with the same cross-section of the small end.In this paper,the method of equivalent cross-section character is introduced,remaining the coefficient of length unchanged.Elastic out-of-plane buckling under axial load,eccentric load,or different end moments are studied.Furthermore,a...

Elastic out-of-plane buckling of doubly symmetric hinged I-column with tapered web is studied in this paper.Previous formulae [1,2] took the web ratio factor into the coefficient of length,regarding web-tapered member as a uniform one with the same cross-section of the small end.In this paper,the method of equivalent cross-section character is introduced,remaining the coefficient of length unchanged.Elastic out-of-plane buckling under axial load,eccentric load,or different end moments are studied.Furthermore,a relevant formula of elastic out-of-plane buckling under combined loads is presented.These formulae are testified by the numerical result of FEM.They are not only brief but also accurate.

本文针对腹板的高度线性渐变的变截面工字钢简支构件 ,进行了平面外弹性失稳临界荷载的研究。以往的公式[1,2 ] 采用将楔杆等效为以小端截面作为等直杆的截面、将渐变的影响计入计算长度系数的方法 ;本文提出了楔杆的等效截面特性概念 ,而将计算长度系数保持不变。先分别研究了在轴心受压、偏心受压及只受端弯矩作用受力条件下楔杆的平面外稳定 ,进而得出在受轴力及端弯矩联合作用下楔杆的平面外稳定临界荷载的相关公式。以有限单元法所得数值对这些公式进行校核。所得公式形式简明 ,物理概念清晰 ,用于工程设计中验算楔形构件的稳定性精度佳

 
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