Responses of Liquefiable Soils in Pile Group Foundations of Tall Buildings from Shaking Table Tests. Issue 2 (1st May 2016)

• Record Type: Journal Article
• Authors: Li, Peizhen; Yang, Jinping; Lu, Zheng; Lu, Xilin
• Is Part Of: Journal of Asian architecture and building engineering. Volume 15:Issue 2(2016)
• Page Start: 311
• Page End: 318
• Publication Date: 2016-05-01
• Subjects: liquefaction -- sandy soil -- soil-structure interaction -- shaking table test -- system identification; Structural engineering -- East Asia -- Periodicals; Architectural design -- East Asia -- Periodicals; Architectural design; Structural engineering; Periodicals; Electronic journals; 720.95
• DOI: 10.3130/jaabe.15.311
• Languages: English
• ISSNs: 1346-7581

Abstract

Abstract: The responses of liquefiable soils around pile group foundations of tall buildings to earthquakes were measured using acceleration arrays in shaking table tests. System identification techniques were used to analyze the measured accelerations and pore pressures and to calculate the shear stress and shear strain in the soil inside and outside the pile group of a 12-story building as well as the soil shear moduli and damping. The analysis shows that the calculated soil stiffness is similar to the stiffness determined using laboratory tests and that the soil damping is higher. It also shows that pore pressure buildup reduces the shear wave velocity and the soil stiffness.