Isolated set is installed between the foundation and building the barrier to large earthquakes on buildings shaking. Strong seismic isolators used to support building the pipeline, and to reduce the shaking of an earthquake. Isolated building by an important pipeline drainage, air, fire and other isolation layer, for absorbing the relative displacement of the site and buildings, the disaster occurs to maintain the normal operation of the pipeline. Applies through the isolation layer or joints of water supply and drainage, air conditioning, fire and other horizontal line and vertical line and double-circuit line is important.