钢结构

The dynamic properties of the steel frame with semirigid end-plate connections were discussed, and the influence of semirigid connections on the multistory steel frames design was studied.

结果表明，采用了半刚性端板连接的钢框架结构，相对于理想刚接的情况，结构在多遇和罕遇地震作用下结构的抗震性能明显变化。

In which, the design combined the coping of bored piles construction platform with bottom of steel cofferdam, the lowering as a whole techniques, synchronousness controlling and orientation technology are innovation.

其中，将钻孔桩施工平台与钢吊箱底板结合的结构方案和钢吊箱整体沉放工艺、同步性控制和定位技术具有明显的创新性。

This thesis shows the structural damage of a steel truss girder model bridge by changing its unit rigidity.

通过改变钢桁梁模型桥单元刚度模拟其结构损伤，利用有限元结构动力分析程序对该模型桥在"损伤"前后进行了结构动力分析。

Firstly, the developmental process, present research situation and problems existed of unquenched/untempered steel have been outlined.

但迄今为止非调质钢的研究与应用主要集中在强度、硬度（HRC＜25）要求不高的结构钢领域。

In this paper,a new steel-concrete composite spine girder with large cantilevered beams of corrugated steel web is introduced.

介绍了带波形钢腹板悬臂挑梁的钢—混凝土组合脊骨梁这一新型结构。

The microstructure of G99 is sub structure with refined lath martensite and high dislocation density ,uniform and carbonide particles strengthing matrix distribute on it,establishes good foundation for getting high strength and toughness for this stell.

G99钢的显微组织是具有细化的板条马氏体、高位错密度的亚结构组织、在该组织上分布均匀、细小的炭化物颗粒强化基体，为钢的高强高韧奠定了良好基础。

If a centrically braced steel frame is used, structure"s stiffness can be met easily. However, when the braces buckle under severe earthquake and are out of function, the frame collapses quickly because it can"t support these loads, thus its energy-dissipation capacity and ductility is poor.

如果采用中心支撑钢框架体系，结构的刚度要求很容易满足，但是当支撑在罕遇地震下失稳而退出工作后，结构整体因不能继续承载而很快倒塌，结构的延性和耗能能力就比较差。

An oil supply structure for vortex-type compressor is composed of oil lifter, rotary shaft and its oil channel, and the eccentrical part inserting slot and pin slot on movable vortex disk, and features that said two slots are communicated with each other via through oil hole for decreasing the abrasion between steel pin and pin slot.

通过涡旋式压缩机的供油结构，压缩机运转中通过旋转轴的油路提升喷出的油经过机油通孔向动涡盘的销槽与钢销的销之间供给充分的机油，使动涡盘的销槽与插入在销槽内的钢销的销之间进行顺利的移动，同时降低它们之间的磨损。

It was shown that, the flow pattern in the EMPT was more complex than that in traditional one, that is, in the column chamber, the short circuit flow from the outlet nozzle of the ladle was depressed by the rotating molten steel, and horizontal recurrent flow appeared in rectangular chamber, which prolonged the average staying time of the molten steel, then reduced the volume fraction of inactive area in EMPT.

结果显示，电磁净化中间包的流场比传统中间包的流场复杂：在圆形腔中，旋转运动抑制了大包水口至矩形腔的短路流，而在矩形腔中形成水平环流，从而延长钢液在中间包的平均停留时间，死区减小，电磁净化中间包的上述流场结构及传输行为对钢液中的非金属夹杂物去除非常有利。

Fibered reinforced wide-beam frames exhibit large displacement and large damping ratio after yielding of structure. Steel fibers contributed to causing less damage during high-level ground motion.

钢纤维扁梁框架的最大位移反应和阻尼比均比普通砼扁梁框架要大，钢纤维可以降低预应力砼扁梁框架在剧烈地震运动下的结构损伤。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。