01551349

Component

Wire mesh gabions are widely used for river bank and slope protection or retaining applications. A better wire mesh construction pattern would reduce the replacement of the gabion and increase the safety of hydraulic structures. The objective of this study is to investigate the engineering behavior of two different hexagonal wire mesh weaving patterns loaded in the longitudinal or transverse direction to provide technical information for engineers for future design applications. Three half-turn (Type A) and four half-turn (Type B) hexagonal wire mesh panels with and without one center cut were used for tensile tests in this study. The panel opening was 120 mm by 150 mm. The test tensile loads were applied either parallel (in the longitudinal direction) or perpendicular (in the transverse direction) to the twist wire sections. The study results indicated that the ultimate tensile strength for Type A and hexagonal wire mesh panels without one center cut with the load in the longitudinal or transverse direction were similar. However, the four half-turn hexagonal wire panels showed better tensile resistance after one wire broke at the panel center for either longitudinal or transverse direction loads. This implied that the presence of broken wires within the four half-turn hexagonal wire mesh (Type B) showed a slight influence on the panel’s tensile strength. In general the tensile strengths for the test conditions for loads in the longitudinal direction were about double those loaded in the transverse direction. In conclusion, four half-turn (Type B) hexagonal wire mesh is a better structural pattern than a three half-turn (Type A) hexagonal wire mesh for slope stability and river bank protection applications. To place the wire panel with the twist sections parallel to the load direction will provide better tensile resistance behavior for engineering applications.

This paper was sponsored by TRB committee AFP10 Engineering Geology.

01550057

15-1755

English

22p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; Photos; References

Bank protection; Design; Gabions; Slope stability; Tensile strength; Wire mesh

Taiwan

Design; Geotechnology; Highways; I42: Soil Mechanics

Transportation Research Board Annual Meeting 2015 Paper #15-1755

TRIS, TRB, ATRI

Dec 30 2014 12:38PM