岩土工程学报Issue(4)：724-730,7.DOI:10.11779/CJGE201404017
高聚物锚固体与粉土间黏结性能试验研究
Experimental study on bond performance between polymer anchorage body and silt
摘要
Abstract
The bond performance between polymer anchorage body and silt is studied through the ultimate pullout tests on vertical polymer anchors. Based on the field tests, the effects of pore size, density and length of anchorage body on the mean bond strength are investigated. Meanwhile the distribution of axial force of polymer anchor steel bars is also measured, and the distribution of bond stress between polymer anchorage body and silt under various loads is calculated subsequently. The test results show that the size, density and length of anchorage body have great impacts on the bond strength. The bond strength increases with the density and more obviously in low density. With the decreasing length of anchorage body, the bond strength increases, short anchor (2.5~4 m) is optimum to exert the shear strength of soil mass, and long anchor (5 m) still has long effective bond length. The bond strength increases with the reduction of hole size. The concentrated bond stress area existing in the polymer anchor moves and widens to the bottom with the tensile load.关键词
高聚物/锚固体/密度/孔径/长度/粉土/黏结强度/黏结应力分布Key words
polymer/anchorage body/density/pore size/length/silt/bond strength/distribution of bond stress分类
建筑与水利引用本文复制引用
石明生,夏威夷,王复明,刘恒,潘艳辉..高聚物锚固体与粉土间黏结性能试验研究[J].岩土工程学报,2014,(4):724-730,7.基金项目
国家自然科学基金项目（51179175）；国家自然科学基金青年基金项目 （）
