土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (6): 644-647.

• 工程实录 • 上一篇    下一篇

液化场地高塔桩基设计研究

顾翠莲   

  1. （中建中环工程有限公司，南京 210036）
  • 收稿日期:2020-07-09 修回日期:2020-07-15 出版日期:2020-12-30 发布日期:2020-12-25
  • 作者简介:顾翠莲（1981-），女，硕士，工程师，研究方向为电力以及环保方面结构设计。

Pile Design forA High Tower Foundation in Liquefiable Sites

GU Cuilian   

  1. (China Construction Power and Environment Engineering Co. Ltd., Nanjing 210036)
  • Received:2020-07-09 Revised:2020-07-15 Online:2020-12-30 Published:2020-12-25

摘要： 内蒙某吸收塔是建造在高烈度震区且液化场地的工程，合理进行桩基设计是关系到工程成败的主要因素。基于塔设备基础设计规范及PKPM软件，分析了塔基设计所需的上部风、地震等荷载效应，以及在正常和地震液化时单桩承载力抗压、抗拔承载力特征值，并进行了正常操作、充水试压、停产检修和地震作用四种荷载工况组合，得出地震作用是液化场地高烈度地区高塔桩基设计的控制工况，以及桩基的厚承台效应对工程的影响，为同类工程设计提供参考。

关键词: 液化场地, 高烈度, 高塔, 桩基, 厚承台, 风荷载, 地震荷载

Abstract: The high absorption tower is constructed in 8 degree high intensity seismic zone and liquefaction site in Inner Mongolia.Designing the pile foundation correctly is the main factor of the engineering success. The wind and seismic load effect which is needed in tower foundation design and the characteristic value of bearing capacity of single pile during normal and seismic liquefaction is analysed, and The load combination of normal operation, waterfilled pressure test, shutdown maintenance and earthquake action is calculated based on Design Code and PKPM Software. It is concluded that seismic action is the control condition of pile foundation design in high intensity area of liquefaction site. As well as the influence of pile foundation thick cap effect on engineering. The results can be reference for the similar projects.    

Key words: LiquefiableSite, High Seismic Intensity, High Tower, Pile Supported Foundations, Thick PileCap, Wind Loads, Seismic Loads

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