Abstract
Various cases of two adjacent multi-story buildings with different numbers of floors and equal or unequal foundation levels under earthquake loading and considering soil-structure interaction (SSI) are investigated. A two-dimensional model for each case of the two adjacent unequal buildings without separation distance is used and a special arrangement of contact elements in the contact zone is employed to fulfil all possible deformation contact modes which take place under seismic loading. The soil is modelled by two-dimensional 4-node elements which are in contact with the foundations of the two adjacent buildings. This paper studies the earthquake-induced double pounding that takes place between the two adjacent unequal height buildings in some upper points at superstructure in the contact zone and also at foundation level, considering soil-structure interaction (SSI). The double pounding and the soil-structure interaction (SSI) effects should be taken into consideration in the seismic analysis of adjacent buildings especially those with different heights and different foundation levels.
Highlights
Impacts due to earthquake-induced pounding transmit short duration, high amplitude forces to the impacting structures and may occur at any level of the colliding structures and at any location along the impacting levels or collision at the foundation level. double pounding denotes the pounding which may take place between superstructure levels and foundation levels of the two adjacent buildings.Pounding between adjacent buildings during earthquakes has attracted considerable interest, see, for example: Anagnostopoulos [1,2], Anagnostopoulos and Spiliopoulos [3], Karayannis and Favvata [4,5], Anagnostopoulos and Karamaneas [6], Efraimiadou et al [7,8]
This paper studies the seismic response of various cases of two adjacent buildings with different numbers of floors and equal or unequal foundation levels subjected to double pounding and considering soil-structure interaction (SSI)
FEM 2D models were created for the soil and the two adjacent buildings of different heights and foundation levels without separation distance in order to study the phenomena of double pounding, which may take place in some upper points at superstructure in the contact zone and at foundation levels, between the two buildings subjected to earthquake and considering SSI
Summary
Impacts due to earthquake-induced pounding transmit short duration, high amplitude forces to the impacting structures and may occur at any level of the colliding structures and at any location along the impacting levels (in the case of different story heights of the adjacent buildings resulting in slab-column impacts) or collision at the foundation level. Naserkhaki et al [24] investigated the earthquake induced building pounding problem for various separation gaps and for two foundation conditions, fixed-based and structure-soil-structure interaction (SSSI). Ghandil and Aldaikh [32] investigated the probable seismic pounding effects on the response of adjacent symmetric buildings considering inelastic structure-soil-structure interaction. This paper studies the seismic response of various cases of two adjacent buildings with different numbers of floors and equal or unequal foundation levels subjected to double pounding and considering soil-structure interaction (SSI). FEM 2D models were created for the soil and the two adjacent buildings of different heights and foundation levels without separation distance in order to study the phenomena of double pounding, which may take place in some upper points at superstructure in the contact zone and at foundation levels, between the two buildings subjected to earthquake and considering SSI
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