›› 2011, Vol. 32 ›› Issue (12): 3561-3565.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Field test study of load distribution of anchoring section of pressure dispersed anchor cables

YE Guan-bao1, 2, HE Zhi-yu1, 2, GAO Yan-bin1, 2, MA Dong-mei3, ZHONG Wei-tao3   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 3. Lianyungang Waterway Administration Office, Lianyungang, Jiangsu 222004, China
  • Received:2010-06-08 Online:2011-12-10 Published:2011-12-13

Abstract: According to the design concept of pressure dispersed anchor cables, load distribution and effective compression anchorage length of pressure dispersed anchor cables of each unit body are tested under the effect of external load, so as to provide design reference for anchorage support design of anchor cables. In field test, the experimental anchor cables have the total length of 32 m, anchoring section’s length of 18 m which is divided into four segments; and have 200 mm diameter hole. By the method of installing micro strain sensor with high sensitivity at the position of anchoring section, load transfer law and distribution of anchoring section are obtained. Test results show that: each unit body of pressure dispersed anchor cables did not shared external load uniformly in accordance with the required standards of the existing regulation. With the increase of external load, load value which located at the position of the second unit body and the third unit body is significantly higher than the load value located at the position of the first unit body and the fourth unit body. The condition of anchoring section is not completely compressed; and the effective compressed anchoring length is also not equal, which the effective length of the first unit body, second unit body, third unit body and fourth unit body are respectively 1.9 m, 2.9 m, 2.8 m and 4.5 m. The distribution law of effective compressed anchoring length of each unit body is the first unit body the second unit bod the fourth unit body, and the effective compressed anchoring length of the second unit body is close to the third unit body.

Key words: pressure dispersed anchor cables, unit body, load value, effective compressed anchoring length

CLC Number: 

  • TU 317
[1] WANG Han-peng , WANG Qi , LI Hai-yan , LI Wei-teng , ZHANG Dun-fu . Development of flexible uniform pressure loading system for model test and its application [J]. , 2012, 33(7): 1945-1950.
[2] CHI Fu-dong, WANG Jin-ting, JIN Feng, WANG Qiang. Real-time dynamic hybrid testing for soil-structure-fluid interaction analysis [J]. , 2010, 31(12): 3765-3770.
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