土建外文翻譯--地震帶民用建筑由磚混向框架發(fā)展的必要趨勢-建筑結(jié)構(gòu)-全文預(yù)覽
【正文】 res. The brick structure has the following damage of housing characteristics: (1) wall damage, the level of earthquake to masonry shear walls in bending. When the direction and level of seismic crosssection parallel to the wall for high aspect ratio close to 1, wall to shear deformation of the main。s two most active seismic zones in the middle on the east Pacific seismic belt, west and southwest is the Eurasian seismic zone after areas, is one of many earthquakes in the world, for we must strengthen the Earthquake Research and prevention. Damage caused by the earthquake in theory, three main factors: the level of the ground motion acceleration, resonance, and energy of inclusiveness. In fact, the earthquake itself is difficult to pose a threat to the safety of human life, most casualties are affected by the earthquake which caused the collapse or destruction of buildings, usually accounting for 95% casualties in the earthquake. Only less than 5% of casualties directly caused by the earthquake and the earthquake floods, landslides cause secondary disasters such as, but not seismic retrofit measures for concrete structure (walls plus not Rachel39。s strength is especially evident, although the price higher, but with the masonry to more cost effective. As more seismic capacity frame shear wall structure, its high price and low popularity is difficult to build largescale. 【 Key words】 masonry。s power and prestige, while the frame structure in the earthquake39。 cost China is located in the world39。 clay amount of large, often occupying farmland, affecting agricultural production。 parison of height to width when the wall for hours, then in the middle of a horizontal wall cracks. (2) vertical and horizontal wall joints damaged. Vertical and horizontal wall joints are a weak link in masonry, earthquake interaction between vertical and horizontal walls, cracks in the transition out of, resulting in vertical wall outward tilt or collapse. (3) to highlight a subsidiary of the roof structural damage. Prominent roof between the roof, parapets and other ancillary structures, due to earthquakes, whipside effect effect, the horizontal displacement is large, and the structure of the lack of a reliable connection, often collapsed damage. Damage statistics show that in the strong earthquake, the multistorey masonry wall is mainly connected with the destruction of ponents, and housingstorey big, thick layers, a relatively more serious damage. The structure of housing limited to masonry materials due to their characteristics (poor ductility), coupled with structural integrity is relatively poor, under the earthquake prone to cracking, damage or even collapse phenomenon. Previous earthquakes has proven this earthquake is a costly show! The frame structure, it is by the beams and columns, of three ponents based on the mon loadbearing, frame by the beam and floor structure connected together into a whole, only for filling wall partitions, not force, so the room layout flexibility and size of windows
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