›› 2012, Vol. 33 ›› Issue (4): 1006-1012.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Field test and numerical simulation of squeezing effect of pipe pile

LEI Hua-yang1, 2，LI Xiao1，LU Pei-yi1, 2，HUO Hai-feng1, 2   

  1. 1. Department of Civil Engineering, School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China
  • Received:2011-06-17 Online:2012-04-13 Published:2012-04-26

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Abstract: Based on a logistics processing warehouse of phase II and plant project reinforced by PHC pipe pile, the compaction effect of PHC pipe pile in dredger fill ground is analyzed. The changes of pore pressure around pipe and the displacement distribution characteristics of soil during pile-sinking are studied by piezometers and clinometers embedded in advance and with the aid of field test means. It is found that the excess pore water pressure decreases linearly with the increase of the distance to the pile and the area of effect is about 10 times of pile diameter. The maximum soil horizontal displacement occurs at a depth of 0.2-0.4 times of pile length, which is related to the subsoil properties and the depth of the soil. By simulating the field test results effectively with numerical simulation and then promoting the results, the law of the displacement of soil with depth and the radial distance during pile-sinking is got. The numerical simulation results show that the soil displacement field is greatly influenced by the friction feature of pipe-soil interface and the pile diameter.

Key words: PHC pipe pile, squeezing effect, ABAQUS, field test, numerical simulation

CLC Number: 

  • TU 441+.7
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