Study of Pullout Tests on Plastic Geogrids with Vertical Stiffener Ribs of Aluminum Angles

FANG Wei; ZHOU Peng; WANG Jiao; SHEN Hongyu

doi:10.3724/j.gyjzG22092708

Volume 54 Issue 5

May 2024

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FANG Wei, ZHOU Peng, WANG Jiao, SHEN Hongyu. Study of Pullout Tests on Plastic Geogrids with Vertical Stiffener Ribs of Aluminum Angles[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 205-211. doi: 10.3724/j.gyjzG22092708

Citation:

FANG Wei, ZHOU Peng, WANG Jiao, SHEN Hongyu. Study of Pullout Tests on Plastic Geogrids with Vertical Stiffener Ribs of Aluminum Angles[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 205-211. doi: 10.3724/j.gyjzG22092708

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Study of Pullout Tests on Plastic Geogrids with Vertical Stiffener Ribs of Aluminum Angles

doi: 10.3724/j.gyjzG22092708

1. School of Traffic Transportation of Engineering, Changsha University of Science & Technology, Changsha 410114, China;
2. Changsha Ligong Detection and Consulting Co., Ltd., Changsha 410076, China

Received Date: 2022-09-27
Available Online: 2024-06-22

Abstract

Abstract

To improve the interfacal strength between ordinary plastic geogrids and fillers, a new type of three-dimensional reinforcement materials —plastic geogrids with vertical ribs of aluminum angles was constructed by fixing aluminum angles as vertical stiffener ribs on the top of the transverse ribs of plastic geogrids. The pullout resistance characteristics and their parameter features of plastic geogrids with vertical stiffener ribs of aluminum angles in sandy fillers were explored by indoor pullout tests in different combined working cases. The results indicated that:1) the pullout curves had an obvious peak value in the stage of lower normal compressive stress, which were characterized by strain softening within the observed range; 2) with the increase in normal compressive stress, the ultimate pullout resistance of plastic geogrids with vertical stiffener ribs of aluminum angles increased obviously. Under the same normal stress, the ultimate pullout resistance was approximately linearly and positively correlated with the height of the vertical stiffener ribs of aluminum angles. 3)The reinforcement effect coefficient, interface shear strength parameter, friction-like coefficient, and pullout coefficient of plastic geogrids with vertical ribs of aluminum angles increased with the increase in the height of the vertical stiffener ribs of aluminum angles, which indicated that three-dimensional reinforcement materials with vertical stiffener ribs of aluminum angles could effectively improve the pullout rasistance strength of the reinforced soil complex, and had positive significance for improving the stability of soil.
- road engineering,
- reinforced soil,
- pullout test,
- plastic geogrid with vertical stiffener rib of aluminum angles

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References(26)

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