Simplified Soil–Structure Interaction Analysis for High-Tech Industrial Buildings Subjected to Forced Vibrations

Abstract

To implement a safe and reliable design for high-tech industrial buildings, the system response should be accurate enough to include the e®ect of soil-structure interaction (SSI). This study proposed a simpli¯ed building-soil system to analyze the dynamic responses, using parameters that are representative of the practical design values for typical semiconductor fab structures in Taiwan. The responses of the simpli¯ed building-soil system subjected to dynamic horizontal loadings are veri¯ed in the frequency domain and time domain. The dynamic responses of the simpli¯ed building-soil system are found to agree very well with those of the complete system obtained by the half-space theory and by the numerical analysis program. It is shown that the proposed simpli¯ed system can e®ectively analyze the coupled SSI e®ects in the translational and rotational directions. It is also found that the structural responses may deviate signi¯cantly by neglecting the coupling of horizontal and rocking motions as the building has a deeper embedded foundation and a sti®er upper structure. The proposed method can be applied to the vibration analysis of high-tech industrial buildings subjected to dynamic loadings.

Seismic Analysis for Building Structures Under Dynamic Soil-Pile Interaction Using Simplified Models

“…where Ub is the horizontal displacement at the foundation top and b is the rotation angle of the foundation. Further details could be found in the previous work [20]. As the building system is undergoing harmonic horizontal excitations, the transfer function for the horizontal response can be derived from the structural dynamics, as given below.…”

Dynamic Soil–Structure Interaction Effects in Buildings Founded on Vertical Reinforcement Elements

“…The unbalanced forces are applied to the main grid, thus forcing the free-field motion at the boundary. The unbalanced forces from the secondary grid are applied to the main grid boundary, with its normal, in the direction of the x-axis, given by the following Equations ( 4)- (6). Artificial boundaries are used to represent in a correct way the semi-infinite nature of the soil deposits [32].…”

“…Dealing with simplified geometries, numerous studies solved the soil-pile-structure interaction through systems that adopt the Winkler method and numerical techniques [2][3][4][5][6][7][8]. However, the use of numerical models becomes a unique alternative solution when the systems are non-linear or have a 3D geometry.…”