Open AccessResearch on the Long-term Tensile Strength of Geogrid in Reinforced Soil Structure
Author(s) -
Bin Liu
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 - 10.1088/1755-1315/310/2/022068
Subject(s) - geogrid , ultimate tensile strength , creep , geotechnical engineering , materials science , strength reduction , high density polyethylene , reinforcement , geosynthetics , tensile testing , durability , composite material , structural engineering , polyethylene , geology , engineering , finite element method
The long-term tensile strength of reinforcement in geogrid reinforced soil structure is an important design parameter. The reduction factors of geogrid, such as installation damage, creep, chemical and micro-biological degradation during construction and operating in the soil must be considered to decide the long-term tensile strength. According to the lab test results, the strength of geogrid in soil and air is compared, and the tensile properties of HDPE geogrid with different strain rates have been studied. In addition, the installation damage reduction factors in five poorly-graded granular fill have been put forward. The creep test method and creep reduction factor have been raised. Finally, the durability reduction factor is discussed in this paper. These results can be used as a reference for future design of geogrid reinforced soil structure.