Centrifuge modeling of batter pile foundations in laterally spreading soil. Issue 135 (August 2020)

• Record Type: Journal Article
• Authors: Zhang, Shuai; Wei, Yingqi; Cheng, Xiaohui; Chen, Tingting; Zhang, Xuedong; Li, Zheng
• Is Part Of: Soil dynamics and earthquake engineering. Issue 135(2020)
• Publication Date: 2020-08
• Subjects: Dynamic centrifuge tests -- Soil pile interaction -- Batter pile foundation -- Liquefaction -- Lateral spreading; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2020.106166
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: Batter piles are widely used in geotechnical engineering construction. Observations regarding the performance of batter piles in seismic hazards are controversial, and few studies have evaluated batter piles in liquefiable and laterally spreading ground. Three centrifuge experiments were performed to gain a better understanding of the performance of batter piles in liquefiable ground and to reveal the influence of the overlying nonliquefiable layer on the batter pile foundation design. The results reveal that for symmetrically placed batter piles, the bending moment of the front pile is greater than that of the rear pile, as a result of the liquefaction-induced lateral deformation in all three cases, and the bending moment reaches its maximum value at the middle of the pile. The presence of the overlying nonliquefiable dense sand layer reduces the potential for liquefaction and lateral spreading of the underlying ground, the settlement and bending moments of the batter piles. Highlights: Dynamic response of batter piles in level liquefiable and laterally spreading soil. Batter piles show the great resistance to lateral spreading in the model case. The bending moment of the front pile is greater than that in the rear pile. The presence of the top dense sand layer reduces the potential of liquefaction. The total settlement in lateral spreading ground is greater than that in level ground.