【正文】 civil from the brick necessary for the development trend 【 Abstract】 Earthquakes are inevitable natural disasters,but the choice of building structures which can effectively reduce the losses caused by the current seismic zone in construction, particularly in economically underdeveloped areas of the brick building structure, but its poor ability to contribute to the seismic earthquake39。s power and prestige, while the frame structure in the earthquake39。 framework。 cost China is located in the world39。s precast concrete floor) caused disaster is particularly tragic. 1. Housing a number of reasons for the collapse Houses collapsed in the earthquake, so many casualties so heavy, what the problem is where? One view is that: Since the earthquake strength, housing guard, the design did not strictly enforce the standards, plus there are some jerrybuilding phenomenon. For this reason man is undeniable, it is the administrative mechanism and the building construction behavior of the loophole is people own issues. Another view, less developed Wenchuan area, building houses and more traditional brickbased, and fell into disrepair, has been unable to cope with more than magnitude 7 earthquake, in fact, a large number of brick and concrete structure building collapsed, causing heavy casualties phenomenon, already on the 1976 Tangshan earthquake occurred. This view from the building itself be analyzed structure, we need to deal with earthquake science, the structural seismic performance seriously strengthen and maintain the building is not down, e to minimize casualties, at least not as it is now present in people before such terror. Overseas Chinese Affairs department in Sichuan Province is located in the hardest hit of 69 overseas Heart School, the survey found. 41 damaged schools, including severely damaged 18 of 23 slightly damaged, none of the overseas Chinese schools collapsed heart. According to experts in emergency assessment of back stress, all brick structure for the casting slab and add columns and by formal design and the quality of the good did not collapse, much less steel frame structure and a. Seismic structure is the last line of defense, this view of the structure of choice for building seismic performance of unusual. 2. Earthquake with the choice of structure Earthquake collapsed houses, brick and concrete structure accounts for most of the first analysis of the masonry structure. Brickconcrete structure is a hybrid structure, with brick walls to load, due to the construction, low construction costs because, for decades has been the traditional form of Chinese civil, more suitable for deep bay into a small housing area is small, multi or lowrise buildings. Good pression performance is one big advantage, but also highlight its shortings: Since the major, low intensity, so that masonry structures subject to earthquake forces is relatively increased。 clay amount of large, often occupying farmland, affecting agricultural production。 and vertical shear stress in the joint