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长细比

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Base on the analysis of superposition theory, a new calculation theory of the column of CFST is brought forward and the calculation formula is derived. Under the deformation compatibility condition, the calculation formula for distribution coefficient of axial compression is derived.

在分析现有叠加理论计算方法的基础上,提出了新的方钢管混凝土柱计算理论,并推导了计算公式;同时在变形协调条件下,推导了其轴压力分配系数计算公式;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。

The wall has no support during the construction stage and the calculationbased on the national standard GB 50018-2002 (Technical code of cold-formedthin-wall steel, structures) should be reliable and safe. The crankle destabilizationof the studs with cold-formed channel section should be taken into account whencalculating the load-carrying capacity. The warpings at both ends of the sectionshould be calculated without any constraint when converting the crankledestabilization into the slenderness rationλ_w.

墙体在施工阶段基本为无墙体支撑,此时,按现行国标《冷弯薄壁型钢结构技术规程》(GB 50018-2002)规定计算是可靠、偏安全的,在计算其承载能力时应考虑单轴对称冷弯卷边槽钢截面立柱弯扭失稳,在计算立柱弯扭失稳换算长细比λ_w时,截面两端翘曲宜按不受到约束条件计算。

In-plane stability capacity of I-section aluminum alloy bars under eccentric compressions was investigated with FEA program of ANSYS. The stability of the bars with different slenderness ratio and eccentricity was analyzed and the influence of initial crookedness and residual stresses on the stability was emphatically discussed.

动用ANSYS软体对常用的铝合金压型材偏心压杆的平面内稳定承载力进行了研究,分析了不同长细比和偏心率杆件的稳定性能,并讨论了残余应力与初弯曲对杆件承载力的影响。

On the basis of analyzing forces on the self-supported column,the superposition method in mechanics of material was used to calculate the steady deflection at top of the high column under both of weight and distributed wind pressure.

在对自支承式塔设备建立合理的力学模型并进行受力分析的基础上,采用材料力学中的叠加法,计算了高塔设备在均布风载荷、自重联合作用下的塔顶静挠度,提出对于自重和长细比均较大的高塔,塔体自重对塔顶挠度的影响不可忽视,并推导出了计算这种影响的表达式。

On the basis of analyzing forces on the self-supported column, the superposition method in mechanics of material was used to calculate the steady deflection at top of the high column under both of weight and distributed wind pressure. The results show that the effect of weight to top deflection of the heavy weight high column can not be ignored and a formulation is deduced to express this effect.

在对自支承式塔设备建立合理的力学模型并进行受力分析的基础上,采用材料力学中的叠加法,计算了高塔设备在均布风载荷、自重联合作用下的塔顶静挠度,提出对于自重和长细比均较大的高塔,塔体自重对塔顶挠度的影响不可忽视,并推导出了计算这种影响的表达式。

It is found that changes in diameter have a certain influence on compressive strength and shear strength of GFRP bars.

试验结果表明,直径的变化对GFRP筋的抗压强度和剪切强度均有一定影响,肋间距和长细比的影响则不明显。

The bearing capacity and the ductility of a FRP-confined concrete column decrease with the increase of slenderness ratio.

随着长细比的增加,FRP约束混凝土柱的承载力和延性有降低的趋势。

The transverse shearing deformation decreased obviously with the increase of the slenderness ratio and increased with the increase of total beam deformation.

横向剪切变形随梁的长细比增大而显著减小,随变形程度的增大而增大。

According to different axial compression ratio and slenderness ratio, this paper designs 12 types of square section column and 12 types of I section column single-story steel frame structures, and gives overall dimensions and characteristic parameters, then provides data for establishing ANSYS finite element models.

按照不同的轴压比和长细比分别设计 12 种柱截面为方形的单层钢框架和 12 种柱截面为工字形的单层钢框架,给出了单层钢框架体系的总体尺寸及特性参数,为 ANSYS 有限元分析提供建模数据。

Influences of several parameters, such as axial compression ratio, slenderness ratio, steel ratio and strength of the materials on the hysteresis behavior of the beam-columns are analyzed.

基于理论分析模型,分析了各参数,如构件轴压比、长细比、截面含钢率和材料强度等因素对圆钢管混凝土压弯构件P-△滞回关系曲线的影响。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

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但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。