Study of seismic dynamic damage on pile-supported wharf with different#br#
types of piles by shaking table test
Song Bo1,2 Xie Minglei1,2 Li Jiren1,2
1. University of Science and Technology Beijing, Beijing 100083, China; 2. Beijing International Cooperation Base for Science
and Technology Aseismic Research of the Rail Transit Engineering in Strong Motion Area, Beijing 100083, China
Abstract： In order to study the dynamic response characteristics and the failure mode of pile-supported wharf with different types of piles, taking a pile-supported wharf with steel pipe piles as the research object. And based on similarity criterion, shaking table test was drawn up. The results show: far-field ground motion has great influence on the structure of straight pile wharf, while the batter pile structure is more sensitive to the near-field ground motion. Under the earthquakes, the model with all vertical piles has no obvious damage sign, while the model with batter piles breaks at the top of batter pile and suffers buckling damage at the consolidation mud surface. The causes of the damage can be summarized as follows: under the constant strong earthquakes, while accompanied by large deformation, the batter piles which have larger rigid bear greater earthquake, and the bending moment at the top of piles gradually increase. These result in the fracture of the batter pile and lead to the brittle failure of the structure. Based on the research, it is suggested that the batter pile can be used in pile-supported wharf when the peaking ground acceleration is below 400Gal.
宋 波 谢明雷 李吉人. 不同桩基形式高桩码头地震动力损伤振动台试验研究[J]. 土木工程学报, 2018, 51(S2): 28-34.
Song Bo Xie Minglei Li Jiren. Study of seismic dynamic damage on pile-supported wharf with different#br#
types of piles by shaking table test. 土木工程学报, 2018, 51(S2): 28-34.
