the paper deduces the iterative calculation formulas of slenderness ratio matching the design conditions, and presents the corresponding computer programs of cross-section optimization for the axia.

推导出了符合设计条件的长细比的迭代计算公式，编写了相应的轴心受压柱截面优化计算机程序。

the results show that the plastic extension would not occur in tensile region until eccentricity is large and slenderness ratio is small.

研究结果表明：除相对偏心率很大及长细比很小的情况外，工字形截面偏心压桿受拉翼缘不会进入塑性状态；

also analyzed are the influences of cfrp ratio, angle steel ratio, slenderness ratio and eccentricity to the mechanical properties of the columns.

同时在此基础上分析了长细比、含角钢率、含碳纤维布率和偏心距等因素对复合加固偏压柱力学性能的影响。

uniform design method is used to design the test plan. tests of columns with different steel ratio and slenderness ratio under bias compression are carried out.

利用均匀设计方法设计试验方案，进行了不同偏心率、不同长细比的钢管煤矸石砼偏心受压构件的试验研究，指出了均匀设计的优越性；

bounds slenderness ratio among axial compression short columns, middle long columns and long columns were determined.

确定了钢管煤矸石混凝土轴心受压短柱与中长柱以及中长柱与长柱的界限长细比；

the calculation formula for the conversion slenderness ratio of the crisscross section column composed of cfst and the increasing coefficient of the stability of the steel tube is determined.

在此理论基础上，确定了十字形截面方钢管混凝土组合异形柱换算长细比的计算公式和钢管稳定性提高系数。

tests show that the strength of column decreases as its slenderness ratio increases.

试验表明，这种柱子的承载能力随长细比的增大而显着下降。

meanwhile the effects of slenderness ratio and load eccentricity on the ultimate load-capacity of slender composite columns are numerically analyzed and discussed in detail.

同时就柱子长细比、荷载偏心距对长柱极限承载力的影响进行了较详细的数值分析和讨论。

it was found that, in general, ascending time ratio, fire load ratio, cross-section dimension and slenderness ratio have a significant influence on residual strength.

得出结论：升温时间比、火灾荷载比、截面边长以及长细比是影响火灾全过程作用后圆钢管混凝土柱剩余承载力的主要影响参数。

in this paper, the bearing capacity and failure modes of long angle steel truss concrete columns with different eccentricities and slenderness ratio are studied.

本文对不同偏心距和长细比的内含角钢桁架混凝土长柱在偏心荷载作用下的承载力和破坏情况进行了研究。

it is confirmed that both rise-to-span ratio and slenderness ratio influence the elastic buckling load.

指出了必须同时考虑长细比和矢跨比对屈曲荷载的影响。

the calculation model of cable tension tested by frequency method for tied-arch bridge is analysed, the effects law of slenderness ratio on calculation precision are also analysed.

对基于频率法测试系桿拱桥吊桿索力的计算模型的选用进行了研究，重点分析了吊桿长细比对模型计算精度的影响规律。

the analytical and numerical results show that the deflection change caused by crack is increasing with the decrease of slenderness ratio or the increase of eccentricity.

理论分析和数值结果表明：在其它条件不变的情况下，柱的长细比越小或偏心距越大，裂纹引起的挠度增量越明显。

test results show that not only the slenderness ratio and eccentricity ratio affect the load-carrying capacity of columns, but also the end moments as well.

试验结果表明，除了长细比和偏心率对试件承载能力有显着的影响外，端弯矩比对承载能力也有显着的影响。

the approach of equivalent slenderness ratio is recommended for calculation purpose.

计算方法宜采用换算长细比法。

this paper presents the test results of 26 concentrically loaded long concrete-filled steel tubular columns with slenderness ratio ( l/d ) varying from 3 to 50.

本文报导了26根长细比（l/d）从3到50的钢管混凝土长柱轴心受压的试验结果。

the relation formular of neutral axle and deflection changing with steel ratio and slenderness ratio in ultimate state are put forward.

推导出了极限状态时偏心受压构件中截面的中性轴、挠度与偏心距和长细比之间的关系式。

author has suggested to limit the slenderness ratio of member instead of limiting the axial compressive ratio.

建议限制构件的长细比可以不控制构件的轴压比。

impact of diameter-thickness ratio of steel tube and slenderness ratio of pier on extension, bearing capacity and energy absorbing of steel pier is studied as well.

目的研究钢管径厚比和桥墩柱长细比参数对外置钢管补强圆形钢桥墩承载力、延性和吸收能量的影响。

slenderness ratio is one of the most important factors that have great effect on the ductility of concrete-filled steel tubular frames.

长细比是影响钢管混凝土框架结构延性的重要因素。

the flexural buckling and flexural-torsional buckling modes of a monosymmetric section column are presented and the equivalent slenderness ratio for flexural-torsional buckling is derived.

阐述单轴对称截面轴心受压构件弯曲屈曲和弯扭屈曲两种失稳形式，以及绕截面对称轴弯扭屈曲换算长细比的计算方法和应用实例。