Study on Dynamic Structure-Soil-Structure Interaction of Three Adjacent Tall Buildings Subjected to Seismic Loading

Abstract

The dynamic structure-soil-structure interaction (SSSI) involving three adjacent structures with pile-raft foundations arranged along the east-west direction in a viscoelastic half-space is numerically studied under earthquake excitation. The direction of earthquake excitation is perpendicular to the direction of the structural arrangement. In the simulation, the Davidenkov model of the soil skeleton curve is assumed for soil behavior, and the viscous-spring artificial boundary is adopted. In order to investigate the effects of SSSI, the clear distance between structures, structure types, structure heights, and the first natural periods of structures are considered, and a series of numerical simulations are conducted. The peak floor displacement and the peak inter-story shear force of structures are examined to determine the SSSI effects. Results show that SSSI effects change significantly with these factors. Furthermore, the structural seismic response could be increased or reduced as a result of SSSI, depending mainly on the structural characteristics, rather than the location of the structures. These results are significant for studying the effects of SSSI and the sustainable development of cities, especially for the seismic design of dense urban buildings.

Dynamic structure-soil-structure interaction of piled high-rise buildings under earthquake excitations II: Influence of key parameter

“…, the SSSI effect should be considered. This separation distance is slightly larger than Gan's work [2] . This is mainly due to the frequency components of the seismic wave, which is one of the main influencing factors in the SSSI problem.…”

Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings

“…Some researchers have explored these effects in the context of three or more buildings [4,6,[15][16][17], demonstrating that these effects are more pronounced compared to situations with only two adjacent buildings. Aldaikh et al [16] revealed that SSSI effects are more severe when buildings are in close proximity, and these effects can be considered negligible when the spacing between buildings is more than 2.5 times the foundation width [15].…”

Numerically study of SSSI effect on nuclear power plant on layered soil

“…Based on the beneficial effect of SSSI mechanism, a novel device was developed for seismic vibration control (Cacciola et al, 2015). Recent research shows that the structure seismic response of SSSI is mainly dependent on the structural characteristics, rather than the location of the structures (Gan et al, 2019). Bybordiani and Arici (2019) studied the effects of the prominent factors such as the distance between the structures, soil moduli, and the number of structures on the dynamic through-soil interaction of adjacent buildings using rigorous finite element models in the frequency domain in a twodimensional setting.…”