钢结构

Discussion on Catastrophe Risks in China from Earthquake and Tsunami in the Indian Ocean ;2. Preliminary study on appropriate environmental parameters for bigeye tuna longline fishery in the Indian Ocean ;3. The "charge/discharge" roles of the basin-wide mode of the Indian Ocean SST anomaly——influence on the South Asian High in summer

印度矿粉由于其高铁低硅，并且价格低廉，因此受到国内多个钢铁厂的青睐，为了充分发挥其优势，从不同品味的印度矿粉出发，得出其各自的烧结特点，找出不同品位印度矿粉对烧结矿的冶金性能的不同影响，并通过对烧结矿的显微结构和矿物组成分析了微观组织结构的变化规律，找出内外部条件的依存关系，有效指导了天钢烧结生产。

The elastic stress diagram design method is behind the times and cant meet the command in practice.In the paper the author collected and analyzed a large amount of data about the SLRCP on several typical domestic model experiments and the projects in practice. By summarizing and analyzing the data, the author set up a typical computing model and analyzed the model by the software ANSYS, by reading the output data of the stress and the crack from the program, combined with the experimental results, the author summarized the destroy procession of the stock. The paper also discussed the influence of other main factors to the crack and the stress besides the internal water pressure, such as the concrete material, the dimension of stock and the way of laid-out steel bars.

本文通过对大量实际工程中的坝后背管资料的收集、归纳和分析，选取了具有代表性的计算模型；用有限元软件ANSYS计算了典型坝后背管结构在实际内水压力作用下的应力分布和裂缝发展情况；以国内几个有代表性的模型试验和有限元计算的成果为依据，分析了在内水压力作用下钢衬钢筋混凝土压力管道管壁裂缝的特点，并尝试总结出此种管道的裂缝出现的原因及其发展规律，同时确定了坝后背管结构极限状态的新的定义方式——以坝后背管的裂缝宽度来定义。

According to displacement overrun failure criterion and structure instability failure criterion, integral seismic capacity of structures is obtained. Verification of the optimal structure from pushover analysis can be performed by comparing each structure\'s integral seismic capacity.

本文分析结果表明：增大巨型梁高更能有效地进步结构抗震能力；部分采用防屈曲支撑改变了巨型钢框架的失效模式，不仅进步了结构弹性极限能力，而且使得抗震性能得到明显的改善。

Through onflow κ-ε equation and structuralization are not even reseau, the simulation of model of numeric wind tunnel that uses test and verify of wind tunnel experiment 4 punch position is different, but the light steel architecture with same size, be based on load of above model wind to distributing the configuration that puts forward to defy wind actively.

通过湍流κ-ε方程和结构化非均匀网格，采用风洞实验验证的数值风洞模型模拟了4个开洞位置不同，但尺寸相同的轻钢建筑，并基于以上模型风荷载分布提出主动抗风的结构形式。

On the basis of advantages of the two materials FRP and steel,combined with the structural characters of ribbon pontoon bridge ,the idea of using FRP/steel composite structure in developing new type ribbon pontoon bridge is discussed.

根据玻璃钢和钢材这两种材料的优点及现行带式舟桥的结构特点，论述了采用玻璃钢/钢复合结构研制新型带式舟桥的构想。

RUGGED, RELIABLE CONSTRUCTION - Enclosures are door-in-door, NEMA Type 3R, raintight, weatherproof, 14 gauge welded steel, primed and painted.

坚固耐用、稳定可靠的结构-外壳是双层结构，NEMA类型3R，防雨，耐气候变化，14级焊接钢，表面整洁，并经过涂漆。

It is 72.5%lighter than that of the reticulated shell,which depends on the stiffness of the supporting strcture.

在第一阶段研究中，反射面支承结构采用传统的网壳结构，并分别由钢和铝合金两种材料制作。

And common steel roof truss mill building is widely used in heavy-duty steel-structure factory for its great rigidity and entirety.

其中普通钢屋架结构厂房以其刚度大，整体性好的特点，广泛应用于重钢厂房结构。

Lost foam process is one of the most advanced casting crafts, and it can be applied in different materials, sizes castings such as steel ,iron, aluminum castings.High-quality of casting with precise size and smooth-faced; no special requirement for material; reduced trimming work and mechanical processing; Fewer inner flaws, and more compact structure.Environmental-protecting. Working conditions could be improved greatly; at the same time reduced labor intensity and decreased energy consuming could also be achieved.

消失模铸造工艺充分汇集了实型、法铸造工艺的优点为一体适应于钢、铁、铝等各种牌号各种材质不同结构的大、中、小型各类铸件利用干砂固型复制原型原样铸件几何尺寸的精密度高无飞边、毛刺、冷隔均匀一致表面光洁度接近精密铸造铸件内部结构稳定排除了砂眼、气空、缩松等铸造缺陷该工艺充分利用了环保理念且投资少整个生产过程没有污染。

Combined with the analysis of recovered fragments,dynamic behaviors and spallation phenomena of these materials were studied.

研究表明，在实验加载压力范围内DT2和FeMnNi样品的自由面速度历史呈现包括相变波在内的典型三波结构，而对HR2钢，尽管金相分析显示其加载前后样品的相组织已发生变化，但速度剖面呈现的仅是典型的弹塑性双波结构。

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。