Interaction behaviour of steel grid reinforcements in a clayey sand

被引：34

作者：

Bergado, D.T. ^{[1
]}

Shivashankar, R. ^{[1
]}

Alfaro, M.C. ^{[1
]}

Chai, Jin-Chun ^{[1
]}

Balasubramaniam, A.S. ^{[1
]}

机构：

[1] Asian Inst of Technology, Bangkok, Thailand

来源：

Geotechnique | 1993年 / 43卷 / 04期

关键词：

Bearing capacity - Clay - Compaction - Composite materials - Foundations - Mechanical testing - Moisture - Reinforcement - Sand - Steel;

D O I：

10.1680/geot.1993.43.4.589

中图分类号：

学科分类号：

摘要：

The interaction behaviour between steel grid reinforcements and a clayey sand has been studied in laboratory and field pullout tests. The clayey sand is potentially useful as cheap, low quality, locally available and cohesive-frictional backfill in the construction of mechanically stabilized earth walls and embankments, especially in coastal areas. The laboratory tests were conducted under undrained conditions at three compaction moisture conditions. The field tests were conducted on dummy reinforcements embedded at different elevations in a full-scale test embankment resting on soft clay foundation. The laboratory tests revealed that the moisture content of the compacted soil, compaction stress, applied normal stress level, diameter and spacing to diameter ratios of the transverse members of the steel grid, all affect the soil-reinforcement interaction, and thereby, also the magnitudes of the pullout resistances. Interferences between the bearing transverse members of the grid were found to be less significant for spacing to diameter ratios above 75. The laboratory tests, in general, gave conservative values of the pullout resistances as compared with the field tests. The proposed prediction equations agreed well with the experimental data.

引用

页码：589 / 603