›› 2005, Vol. 26 ›› Issue (S1): 193-197.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Extruded sand-gravel column with sleeve valve grouting to remedy the slant of large diameter cylinder piers on the sea due to mud interlayer within foundation

HE Kai-sheng1, TONG Xu-dong2, ZHOU Rong-guan1, WANG Cheng-ming３   

  1. 1.Geotechnical Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China; 2.China Communications Planning and Designing Institute for Water Transportation, Beijing 100007, China; 3. Hainan Minsheng Gas Corporation, Haikou 570208, China
  • Received:2005-02-24 Published:2005-12-15

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Abstract: For the slant problem of large diameter cylinder piers on the sea due to remained mud interlayer between the enrockment bedding and bedrock, a new remedy method is put forward and designed. It is extruded sand-gravel column with sleeve valve grouting, formed by pouring sand-gravel into boring hole, aiguille extruding them into the soft clay interlayer and enrockment, then grouting with sleeve valve. The inspection results after construction indicate that the diameter of pure sand-gravel column in mud and silt reaches 55 to 82 cm, the boring core sample strength of grouting column reaches 4.3 to 11.4 MPa at 28 days. Now the remedy project is completed for 1 year, the good state of large diameter piers shows that the suggested method is very successful.

Key words: wharf, large diameter cylinder pier, enrockment bedding, extruded sand-gravel column with sleeve valve grouting

CLC Number: 

  • TU 43
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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