The principle of anti-seismic work

The principle of anti-seismic work is to reduce casualties and reduce earthquake losses. In order to achieve this goal, the earthquake resistance of existing buildings must be identified to provide a theoretical basis for seismic strengthening and reconstruction, so that the existing buildings are more economically reasonable during the seismic strengthening process.When an earthquake comes, with the vibration of the ground layer, the earthquake action is transferred to the main body of the building structure through the foundation.If the main structure does not meet the seismic fortification requirements, it will surely cause serious earthquake disasters. Some of the existing building structures were built in the last century, or most of them could not meet the requirements of the latest specifications, and did not consider the seismic fortification requirements.With the progress of earthquake-resistant technology, the update of some earthquake-resistant codes has caused the original earthquake-resistant fortification of some structures to be low, which is not conducive to the requirements of today's earthquake-resistant codes. Through the appraisal of the buildings that were seriously damaged after the earthquake and the above-mentioned earthquake damage experience study, it can be concluded that the existing buildings are used for seismic analysis of existing buildings, and most of the structures do not meet the specifications. Therefore, measures must be taken for seismic strengthening, which is one of the effective measures to reduce earthquake losses.