01011092

Component

https://doi.org/10.3141/1913-20

http://scholar.google.com...dger&publication_year=2005

Wire mesh and cable net slope protection have been in use for more than 50 years along North American highways to control rockfall on actively eroding slopes. The basic design of these systems is comparatively similar throughout North America. It consists of a top horizontal cable suspended by regularly spaced anchors, typically a perimeter or widely spaced grid of horizontal and vertical support cables, and double-twisted, hexagonal wire mesh laced to the support ropes. To date, the design of the slope protection systems has been based primarily on empirical methods, engineering judgment, and experience. Although these systems generally perform well, there is some consensus among geotechnical specialists that some elements in the system may be overdesigned or even unnecessary. In addition, system failures under a variety of loading conditions within the past few decades indicate that certain design elements may in fact be underdesigned for their desired application. Analytical and numerical models to evaluate the stability of slope protection systems are presented. The inclusion of interior horizontal support ropes in addition to the top horizontal rope does not reduce the stress within the mesh and accordingly provides no mechanical benefit. Results also show that the stresses on the vertical support rope are much smaller than the top horizontal support rope. Therefore, the vertical ropes do not need to be as strong as the top horizontal rope. Further, some useful design charts for the design of slope protection system are presented.

01011073

English

pp 205-213

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093864

Print

Figures (8) ; Photos (1) ; References (7) ; Tables (5)

Design; Design charts; Mathematical models; Mooring anchors; Rock slopes; Rockfalls; Rope; Spacing; Stresses; Wire mesh

Cable netting; Slope protection systems

Design; Geotechnology; Highways; I43: Rock Mechanics

TRIS, TRB, ATRI

Dec 7 2005 10:58AM

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