JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (4): 89-95.doi: 10.6040/j.issn.1672-3961.0.2015.327

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Development and application of after grouting device for prestressed concrete pipe pile

MI Chunrong, LI Jianming   

  1. Shandong Academy of Building Research, Jinan 250031, Shandong, China
  • Received:2015-10-12 Online:2016-08-20 Published:2015-10-12

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Abstract: To solve the problems that the after grouting devices could only achieve pile bottom grouting or pile side grouting and the structure was irrational, the design and optimization of after grouting device were put forth, and then were used in engineering. 3 kinds of after grouting devices were designed. Structure one was chosen to be optimized by analyzing the effect of grouting and the structure of the form. Reinforcement ratio of structure one was optimized by using finite elements analysis software ANSYS. In addition, the strength and rigidity of the injection channel were checked by the same way. The field application showed that the device performance was stable and reliable. The ultimate vertical bearing capacity of a single pile could be significantly improved. This device also had good effects on improving the performance price ratio of the pile. Compared to other after grouting devices, this device could realize the control of pile end and pile side grouting by pressure control for the first time, which could prevent slurry return and ensure pile end and pile side grouting quantity.

Key words: structure optimization, grouting device, numerical simulation, after grouting

CLC Number: 

  • TU473.1+1
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