翼缘板

In recent years, for its 300,000 tons of annual production for cast iron and 450,000 tons for steel billet, it has become the largest production base for common carbon steel billet in Henan. H-type steels are a kind of light economic section shaped steel with the perpendicular among thin-walls, girths and web plates.

公司是河南省最大的普碳钢坯生产基地，具有年产生铁30万吨，钢坯45万吨的生产能力。H型钢是一种轻型薄壁，翼缘与腹板垂直的经济断面型钢。

Changing the connecting form of side board and beam flange, considering remainder stress, researches on the influence of side board on connections were done.

改变侧板与梁翼缘的连接形式，考虑残余应力分布，研究侧板对节点受力性能的影响。

The results of experiment and calculation are compared. The process how the CFRP stress on flange transfers to web plate of continuous beam is studied.

对A组试件采用ANSYS有限元程序进行分析，分析与试验结果基本一致，主要考察连续梁的承载力和翼缘CFRP应力随距腹板距离的变化情况。

The results show that space finite analysis results are close to test ones, bottom chords suffer axial force and large in-plane bending, and the max stress is nearby each middle internode. The max stress of node crossbeams occurs in No.2 bottom flange, and that of internode crossbeams happens in ones lying in the middle of every internode. The concrete slab is in tension at the longitudinal direction, and also suffers bent at vertical loads. The degree of completely-composite model taking part in the combined actions is about 55%, while that of semi-composite model is 42%-43%. The combination of concrete slab and bottom chord increases the degree of floor system taking part in the combined actions, lightens the burden of bottom chord, and reduces out-of-plane bending of node crossbeams especially the ones near bridgehead. Stress and displacement of main truss can be evaluated by a equivalent plane rigid frame in preliminary design, and effective stiffness of bottom chords are composed of original ones and concrete slab, and the concentrated load from deck can be translated into uniform load.

研究结果表明：空间有限元分析结果与试验结果较吻合；下弦杆受到轴向拉力和较大的面内弯矩作用，各节间最大应力出现在节间中点附近；节点横梁最大应力发生在横梁2的下翼缘，节间横梁最大应力发生在位于端节间中部的小横梁上；混凝土板顺桥向整体受拉，并在竖向集中荷载作用下产生弯曲变形；全结合模型大部分节间内的桥面板参与主桁共同作用的程度为55%左右，半结合模型桥面板的参与程度为42%~43%；桥面板与下弦杆结合能够增加桥面板的参与程度，减轻下弦杆荷载，减少节点横梁尤其是靠近桥头横梁的面外弯曲；对桥梁进行初步设计时，主桁杆件的位移与内力可按照1个等效的平面刚架计算，下弦杆的等效刚度由原下弦杆截面和混凝土桥面板截面组合而成，桥面荷载可转化为均布荷载施加。

Results showed that the ductility of bolt spjice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism.

试验结果表明：螺栓拼接节点的延性远好于梁柱焊缝连接；较弱的拼接节点产生较大的塑性变形；接触面的滑移、螺栓与孔壁的挤压和翼缘拼接板的屈曲都具有良好的耗能能力。

Results showed that the ductility of bolt splice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism.

试验结果表明：螺栓拼接节点的延性远好于梁柱焊缝连接；较弱的拼接节点产生较大的塑性变形；接触面的滑移、螺栓与孔壁的挤压和翼缘拼接板的屈曲都具有良好的耗能能力。

Subsequently, draw some regularity result and give suggested thickness and length of flange connecting plate in actual engineering.

得出了一些规律性的认识，给出了建议的翼缘连接板长度和厚度设计值。

This was due to the heat effect of welding to connect the side plates and the beam flanges, which caused brittle tear of beam flanges in the heat effect zone outside of reinforced part.

主要原因是侧板与梁翼缘的对接焊缝的影响使得加强区外焊接热影响区母材变脆而发生脆性撕裂。

The roller straightening of I Bar is realized in the way that the web is pressed to plastic deformation by adjustable rollers.

工字钢辊式矫直是通过对腹板施以可调辊压使翼缘产生一定的塑性变形来实现的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。