Open AccessUnderreamed Anchor with Geotextile Bag and Its Hyperbolic Load versus Displacement Model for Capacity Prediction
Author(s) -
Gang Guo,
Aiping Tang,
Zhong Guang,
Zhong Liu,
Xiaochen Hu
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/5/052077
Subject(s) - geotextile , geotechnical engineering , displacement (psychology) , muck , borehole , engineering , structural engineering , range (aeronautics) , civil engineering , geology , psychology , aerospace engineering , soil science , psychotherapist
Underreamed ground anchor technologies have been developed to increase the capacity of ground anchors referring to reamed piles worldwide. To solve the problem of low anchor cement strength caused by muck and slag in the borehole for a traditional underreamed anchor, this paper introduces an underreamed ground anchor with a geotextile bag. Its structure and installation process are both discussed in detail. Based on the test data from 24 underreamed anchors with geotextile bags at 6 construction sites all over China, a hyperbolic model of the relationship between the load and displacement is presented to predict the capacity of a cylindrical underreamed anchor. Compared with the measured values, the predicted capacities of pointed displacements out of the tested range were sufficiently accurate for engineering practice.