Analysis of Influence of Sand Parameters on Seismic Performance of PHC Piles

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Ma, Shengxiang^1 ; Liu, Wenbai^1 ; Hu, Runxin^1

College of Ocean Environment and Engineering, Shanghai Maritime University, 1550 Pudong Avenue, Shanghai

200135, China^1

关键词: Finite element software;    High strength concretes;    Horizontal loads;    Hysteresis energies;    Internal friction angle;    Overall stiffness;    Seismic Performance;    Ultimate bearing capacity;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/3/032042/pdf
DOI  :  10.1088/1755-1315/233/3/032042

来源: IOP

【 摘 要 】

In order to study the effect of sand parameters on the seismic behavior of prestressed high-strength concrete (PHC) pipe piles, using the general finite element software ABAQUS6.12, by applying horizontal reciprocating load on the top of the pile, the influence of sand parameters on the seismic behavior of PHC piles under horizontal load is studied. The results show that increasing the relative density of sand increases the degree of hysteresis of PHC pipe pile hysteresis curve and reduces the cumulative hysteresis energy of PHC pipe piles; Increasing the internal friction angle of the sand increases the hysteresis loop area of the PHC pipe pile, and the cumulative hysteresis energy consumption increases; Increasing the initial modulus of sand soil resistance makes the PHC pipe pile stagnation loop shrinkage, and the cumulative hysteresis energy consumption decreases slightly. Increasing the relative density of sand, internal friction angle and initial modulus of soil resistance can increase the overall stiffness of the pile-soil system, increase the horizontal ultimate bearing capacity of PHC piles and reduce the ultimate displacement of PHC piles.