On the basis of analysis previous experiment data , it is conclusion that allowable value of drift angle of elastic and elastic - plastic is 1 / 550 and 1 / 75 respectively , which is applicable to r . c . frame structure with special - shaped column is given out . the conclusion explains that the deformabiliry of r . c . frame structure with special - shaped column lies between rectangle column frame structure and shear wall structure . the calculating formula of allowable value of axial load ratio of special - shaped column is derived , it is compared with that of equaling areas rectangle column 根据对前人试验数据的统计分析，给出了适用于异形柱框架结构的弹性和弹塑性层间位移角限值分别为1 550和1 75 ；指出了异形柱框架结构的层间变形能力介于普通矩形柱框架结构和剪力墙结构之间；以t形柱为例，推导了异形柱轴压比限值的计算公式，通过与等面积矩形柱的对比分析，认为异形柱的轴压比限值与其截面尺寸的比例关系有关；当腹板受压或翼缘受压时， t形柱轴压比限值存在较大差异；不同的荷载角作用，轴压比限值变化较大；矩形柱的轴压比限值要大于异形柱的轴压比限值。
This article proposes the adaptive algorithm based on equal snr signal noise ratio , and applies it in adaptive ofdm system . in frequency selective fading channel , compared with the traditional ofdm system based on equal power allocation , the system outperforms in ber bit error ratio performance 提出了一种基于最小平均误码率的自适应预处理算法，并将该算法应用于自适应ofdm系统，在频率选择性衰落信道条件下，与等功率分配的ofdm系统相比，误比特性能有了很大程度的提高。
The investigation of this paper has grate actual and expansive significance and offer methods for the application of rigid frame . the investigation indicate that the ripple web plate ' s critical stress has great improvement than ordinary flat plate and ripple web plate variable cross - section has a rather superiority than constant cross - section portal rigid frame 本论文所做的研究工作具有很强的现实意义和推广意义，为门式刚架的应用提供了思路。通过研究表明：波纹腹板的临界应力比普通的平板有很大提高，而波纹腹板变截面门式刚架与等截面门式刚架进行对比也有较大的优越性。
