In order to implement the requirements of Decree No.744 of the State Council on promoting the use of isolation technology in ＂two zones and eight categories of buildings＂,and promote the healthy development of isolation technology,a investigation was done on the earthquake damage of two isolation buildings located at the epicenter of Luding earthquake.The causes of earthquake damage of dampers,connectors and piers in the isolation layer in a teaching administration building were analyzed.The damage situation of isolation bearings in a dormitory building was introduced.The shortcomings of seismic damage caused by unreasonable structural treatment such as seismic isolation joints of two buildings were comprehensively and systematically summarized.The improvement suggestions were proposed that the design of seismic isolation buildings should be fully coordinated to avoid setting too many seismic isolation joints to divide the building too fragmented.The pier connected with the damper needs to undergo shear-torsion verification caculation.The flexible connection of equipment pipelines passing through the seismic isolation layer should be set with a U-shaped segment to reserve the deformation length,and the seismic isolation joints with a large width should pay attention to the design and construction of anti-fall and traffic requirements.And relevant requirements for the construction of seismic isolation structure,product inspection,acceptance and responsibility of construction units were put forward.
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