Structural pounding between adjacent multi-story buildings in a row considering soil effects

摘要

Structural pounding between three buildings in a row, where a 8-story building is located between two 6-story exterior buildings which are identical, are investigated using the finite element analysis software SAP2000. Soil-structure interaction is incorporated by including appropriate mass-spring-damper systems at the foundation level. Energy dissipation during collisions is considered by using a gap element together with a link element with both stiffness and viscous damping properties. Two near field earthquakes and two far field earthquakes are considered for input motions. For the earthquake inputs used in this study, results obtained indicate that buildings are more vulnerable to near field earthquakes. The taller building has relatively large shear amplification factors.