Experimental results indicate that the strength capacity , stiffness of columns have a certain extent increasing as a result of the action of cfrp , repaired columns " cracks show little and distribute uniformly . the ultimate strength and ductility of column improved due to the transverse strengthening with cfrp and display more distinct benefit when strengthened by the combined action of the longitudinal and the transverse straps of cfrp . in addition , many parameters including anchorage length of cfrp , thickness of cfrp are considered on the effects of cfrp on strength , and failure modes of columns 试验结果表明，大偏心受压柱受拉面纵向粘贴碳纤维布后，偏压柱承载力和抗弯刚度有一定程度的提高，裂缝宽度减小且分布均匀；碳纤维布横向粘贴偏压柱对偏压柱的承载力和延性有一定的提高；纵横向混合粘贴大偏压柱加固效果更显著；混凝土强度低于c20级时，不适合采用碳纤维布粘贴加固。
According to the force balance equations , the values and distributions of bond stress between steel shape flange and concrete in eccentric loading columns were established by statistically regression with experiment data . and the influence of the factors such as relative eccentricity e0 / h , the slenderness ratio l0 / h on the bond - slip properties was analyzed 利用力的平衡方程，通过对试验数据统计回归，得到了偏压柱型钢两侧翼缘与混凝土的粘结应力的大小及分布规律，并分析了偏压柱长细比、偏心距对其的影响。
Based on the tests of 23 rc columns , the strength capacity , stiffness of the columns strengthened with cfrp have been researched ; ductility , the distribution of cracks and failure modes of retrofitted columns have been analyzed . this paper investigated the degree of cfrp function on different eccentricities , and discussed the influence to strengthening effect on the basis of different strengthening mode and concrete strength 本文完成了23根钢筋混凝土柱的试验研究，研究了粘贴碳纤维布偏压柱承载力和刚度的变化；分析了碳纤维布粘贴对柱延性、裂缝分布及破坏形态的影响；研究了在不同偏心距下碳纤维布的作用发挥程度；比较了不同粘贴方式和不同混凝土强度对加固效果的影响。
Introduced the second order analysis of the thin - walled members based on the theory of the rotation of a cross section around a fixed axis , and discussed the general methods of the loading capacity and the space stability coefficient for the thin - walled columns . used a programme , a large amount of space stability coefficient of t - shaped and l - shaped axes columns with a initial bend was computed to gain the curves of the columns . the procedure of the computation behaved the simplification and the convenience of the method 介绍了以定轴转动理论为基础的薄壁柱空间稳定二阶分析方法，初步论证了以此为基础的薄壁柱空间稳定承载力的验算及空间稳定系数的计算方法，并借助程序对具有初弯曲的各种“ t ”形和“ l ”形轴压柱的空间稳定系数进行了计算，作出其柱子曲线图，从而验证了此方法的可行性和简便性，同时提出以此为基础对钢结构截面优化的方法。
Based on the above experiments , the 18 rpc filled circular steel tube were completed , which has yielded some positive fruits : 1 . this paper collects the test data on the stain deformation and ultimate loading capacity , describe the change of figure and the failure patterns of the specimens , and analyze the characteristic of it ' s load - deformation curve and the all course of work 在材料性能试验研究基础上，又进行22根圆钢管rpc短柱轴压试验，取得了以下的初步成果： 1 、测试采集了各级荷载下试件的应变、位移和极限承载力等实验数据,描述了圆钢管rpc轴压柱在加载过程中的外形变化和破坏特征,分析了圆钢管rpc轴压柱的荷载-变形曲线的特点及其整体工作全过程。
An elastic - plastic and geometrically nonlinear finite element method is developed to analyze ultimate strength of h - shape steel columns under axial compressive loading . initial imperfections including residual stress due to hot - rolled and initial overall deflections of columns are considered . an experiment study of 21 h - shape steel columns with slenderness parameter of ranging from 40 to 120 is conducted to verify the theory results 本文通过弹塑性和几何非线性的有限单元法理论分析，在长细比范围在40 ? 120的21根国产h型钢轴心受压柱的承载力试验中进一步证实了这一理论的合理性和有效性。
After the comparison of the stability checking computations and the section categorised situation both at home and abroad the current standard , some problems was discussed in the standard of our country . contraposed these questions , the paper computed the space stability coefficient of some general t - shaped and l - shaped sections and all the sections of t - shaped , l - shaped and 2 - angle iron t - shaped in the formed - steel - table , and worked out the curves . according to the comparison of the curves the paper got and the curve in the standard , some simple conclusions was put 对国内外现行规范轴压柱稳定验算方法及柱子曲线截面分类情况进行了对比，讨论了我国规范曲线中存在的一些问题，并针对这些问题，以规范初始弯曲值对任意“ t ”形和“ l ”形截面和型钢表中所有t型钢、 l型钢、双角钢t形钢截面的空间稳定系数进行了计算，作出其与规范曲线的比较图，通过计算结果的分析对各类截面归类情况作了简单的评述，其中提出的一些建议可以作为规范修订的参考依据；同时，这些计算结果也进一步证明了本文的柱子空间稳定分析方法的正确性。
In this thesis , the experimental research of the behavior of high strength concrete axial compression columns and eccentric compression columns under non - uniform temperature field are conducted . from the experimental analysis , the variational regularity of ultimate load capacity and deformation of high strength concrete compression - flexure members under non - uniform temperature field is obtained . the influences of different factors including temperature , stirrup contents , strength grade of concrete , pre - loading level , eccentricity and different loading - temperature paths to refractory capability of members are investigated 文中还对高强混凝土轴心受压柱和偏心受压柱在不均匀温度场下的力学性能进行了试验研究，通过试验分析了高强混凝土压弯构件极限承载力和变形在不均匀温度场下的变化规律，考察了不同升温温度、箍筋用量、混凝土强度等级、预加荷载水平、荷载偏心以及荷载?温度途径等对构件耐火性能的影响，通过试验量测，得到了构件的截面温度场。
Based on the reasonable model of bond - slip , theoretical calculating about slip and slip strain was done . and then the influence of it between steel shape flange and concrete on stiffness deflection of eccentric loading columns was conducted and a simple calculating formula about stiffness of eccentric loading columns was built 在建立合理的粘结滑移模型的基础上，对型钢与混凝土的滑移，及滑移应变进行了理西安建筑科技大学博士学位论文论计算，并进一步推导出型钢与混凝土的滑移效应对偏压柱刚度、变形的影响程度，建立了简化的偏压柱刚度计算公式。
By conducting the degree of influence of slip strain on average strain of a member section , some parameters of corrected even section were accurately calculated , which made the corrected even section more reasonable . and then a calculating model of bearing capacity for eccentric loading columns was proposed by using limit balance equations 通过推导滑移应变对构件截面平均应变的影响，准确确定出修正平截面中的一些参数，使修正平截面更趋合理性，再利用极限平衡方程，建立了src偏压柱受压承载力计算模型。
