房建外文资料翻译--钢结构在土木工程中的研究应用(编辑修改稿)

房建外文资料翻译--钢结构在土木工程中的研究应用(编辑修改稿)内容摘要：

seismic design parameters, The earthquake surviving building directly dependent on the experience large inelastic deforma tion the hysteresis energy consumption when the main structural framework. Steel structure can be said is the most widely used, one of the toughest engineering materials. However, the inherent ductility of the material does not always into the inherent ductility of the structure of the building, so to fully recognize this and take appropriate design strategies and reliable, stable stagnation of consumer mechanism. Usually a design has the ductility response there should be enough material crosssection, material ductility and ductility of the structure and ductility. The capabilities and needs of the ductility values to the variable level of ductility, curvature ductility (ductility) and displacement ductility (ductility) match. Although strain ductility of the steel structure is relatively high, but because of the uneven force stability flexural members, member curvature ductility is often insufficient. 、 Toughness Toughness absorb energy and plastic deformation indicators measure the material before breaking toughness. It can resist a notch portion unstable crack propagation. Resilience usually means that the steel structure can withstand a relatively large industrial deformation in the manufacture, installation and use of the process, the steel structure is a very important feature. Precisely because of the toughness of the steel members to reduce the possibility of cracks in the production process of bending, shearing, punching, forging, drilling. Must have sufficient fracture toughness of the steel structure, in particular by the alternating load and impact load of the building structure to have this feature. The fracture toughness of the steel structure is very sensitive to temperature conditions, and decreases as the temperature decreases. Design of steel structures in cold weather areas, we must first consider the toughness. Relatively speaking, lowcarbon the niobium steel is high carbon steel ingredients steel is more improved toughness. 、 Overall Overall from the foregoing, either from the stiffness, strength and ductility, steel structure is better than the reinforced concrete and steel structures can be relatively easy to construct exotic architectural forms, usually steel system can provide the best designflexibility and maximum space utilization. Another advantage of the steel structure is: it is an ideal cantilever construction system. Appropriate application fasting steel bracket and ponent web openings for pipes and other supply line channel, not only reduces the height of the floor, and increased aesthetic appeal. Steel frame like the steel structure, which is used to extend the existing concrete building structure or increase the floor. During the construction and assembly of steel structures construction workers is much less than the required number of concrete building structures。 pared with the concrete building, installation of steel structures and the production of quality should be more reliable and easy. Modify, steel than concrete structures easier, less costly, especially when you want to attach a support system, steel structure can speed up the construction progress. The disadvantage of steel structures Of course, each material is not perfect, so the application of steel structure and construction there are also some disadvantages, its mainly for the following parties and: 、 Material shortings Although the rigidity of the steel structure is much greater than the c。