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1、 Seismic design of building structures in the world of serious mistakes mechanics theory First, tie the internal forces of the structural system seismic 1, the current anti-seismic building structures (theoretical) technology, there is an error: The World countries to adopt the earthquake resistance
2、 of buildings damaged basic types of objects are to absorb the seismic energy-based plug-in the overall structure (in terms of the Earth), about the construction objects of the foundation and superstructure design is absolutely integral rigid insert the Earth, thus the building to resist earthquakes
3、 destructive force analysis and design, will have to consider the overall structural seismic performance of buildings, the earthquake was destructive of the land layer and the rock base and the impact of buildings will impact directly passed to the upper structure of the upper structure of the force
4、 (load) plus the internal forces generated by an earthquake on the basis of further reaction, thus building the basis of the strength of the design requirements, should be the seismic force and the upper structure of the superposition of reaction. Destructive earthquake is to review the level of she
5、ar force, the upper structure of the reaction is perpendicular to the ground. This two directions perpendicular to each other, and the impact of state forces in motion in a plane will be paid. Destructive earthquake with a strong follow-up to the level of the driving force to promote the (seize) the
6、 level of the building foundation to do follow-up campaigns, and thus can easily analysis, these two forces will be referred to the surface, in essence, form a much larger than the earthquake the destructive shear force to the cover. Therefore, the building earthquake-resistant capacity of the overa
7、ll structure of the plug-in is very difficult to achieve a practical seismic design requirements, the existing buildings are generally inclined to the conservative ideal of the design and construction, and thus investment is greatly increased, even so, in The actual earthquake, the building remains
8、the extent of damage is very serious, and thus can not get rid of and the reduction of earthquake disasters, to the peoples lives and property caused by huge losses. The lessons of history enough to have been fully demonstrated that plug-in architecture structure system to a severe test, that seems
9、pretty good for the Earth inertial reference system, in turn building objects into the Earth, forming an integral rigid body. In the past years, the building is still in the lower range, the problem is not serious, but in the modern high-rise, heavy construction, we still are using plug-in just hoop
10、 tie the internal forces of the structure, the actual earthquake disasters there is a serious hidden. Plug-in the overall structure of the building system in normal circumstances, that is, non-seismic static state, there is no problem, and in the earthquake broke out, plug-in overall force structure
11、 of the building system, transmission power line, apparently confused, building structural design an extremely important mechanical principles: (1), whether in any case, the structure of power transmission lines must be clear. (2) to the most adverse external factors, the local basis for the design,
12、 such as might occur in many areas must be considered the greatest destructive earthquakes. This means that the building to resist earthquake damage in the right conditions are: the movement to pass structural internal forces must be properly and clearly. Plug-in the whole building structures in the
13、 earthquake, it will be directly passed to the destructive earthquake in the upper structure, so that the upper structure of shaking, as the upper bound hoop structure is just the structure of internal forces, thus shaking the tremendous energy generated there is no release point, while theforced to
14、 return to base, the earthquake has been the impact of quickly building the foundation structure of the Department transfer seismic energy upward. This forces the return of the upper structure, the earthquake came with the base internal forces collide, collision of the most powerful focal point is t
15、he breakthrough point of the release of energy concentration, but also structural damage points, usually at the base and the upper surface of the structure of cross - to undermine the form of shear failure, rather than the collapse of the entire building is tilted. At present, many countries in the
16、high-rise buildings in earthquake-resistant design has been the emergence of new structures, such as: New Yorks 42-story high-rise buildings, building lies in the basis of separation of 98 rubber spring, the Japanese built in the curved steel bar anti-seismic buildings, built in the former Soviet Union and the sand cushion on the basis of separation of buildings, as well as in China, has received the United State
