数值模拟了上拔荷载、桩上拔位移与时步的关系，并与宏观物理实物试验的实测结果作了对比分析；
The relations between uplifting load , displacement and time were simulated numerically and compared with the results of actual pile tests, and the ultimate uplifting bearing capacity was defined.
研究了极限上拔承载力和抗拔桩的破坏机理。
The ultimate uplift bearing capacity, failure mechanism of piles were studied.
结果表明，DX桩的抗拔承载力明显大于同等条件下的等截面桩，且DX桩的荷载-上拔位移关系呈缓变形；
The results show that the tension bearing capacity of DX pile is apparently higher than that of the pile with constant section, and the curve of load-displacement of DX pile is slowly varying.
通过使用ANSYS软件，对桩-桶基础上拔试验进行有限元数值模拟。
Numerical simulation of finite element method for pile-bucket foundation under uplifting load were conducted by making use of ANSYS software.
提出了在地下车库内增设抗拔桩和剪力墙的加固方案，计算结果显示，增设剪力墙后桩基所受上拔力大幅度降低。
The reinforcement scheme which add tension piles and shear walls in the garage was put forward. The calculation results show that the uplift load of the pile greatly reduced after adding shear walls.
扩底桩的上拔破坏模式随埋深增大由桩周土体倒圆锥台形破坏变为扩底圆周土体局部破坏。
The failure pattern of the soil around the pile changed from inverted truncated cone slip-surface to local failure around the enlarged base with the increase of embedment ratio.
在现场试验基础上，研究沉管干振挤密抗拔防浮碎石桩在拉压循环荷载和拉拔循环荷载下单桩及其抗拔钢筋的性状。
Based on the in-situ tests, the behaviors of single diving dry-vibrated compacted and anti-pull stone column with steel bars are studied during the compression-uplift cyclic loading.
承受上拔荷载是杆塔基础的主要功能之一，而以往对软土地基上微型桩抗拔特性的研究较少。
Being subjected to pullout is one of main functions of transmission tower foundation, but there are few researches on the characteristics of micropiles pullout behavior in soft ground.
承受上拔荷载是杆塔基础的主要功能之一，而以往对软土地基上微型桩抗拔特性的研究较少。
Being subjected to pullout is one of main functions of transmission tower foundation, but there are few researches on the characteristics of micropiles pullout behavior in soft ground.
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