Technical solutions to reduce the risk of subsoil compaction: effects of dual wheels, tandem wheels and tyre inflation pressure on stress propagation in soil

被引:93
作者
Keller, T [1 ]
Arvidsson, J [1 ]
机构
[1] Swedish Univ Agr Sci, Dept Soil Sci, SE-75007 Uppsala, Sweden
关键词
soil stress; subsoil compaction; stress calculation; dual wheels; tandem wheels; tyre inflation pressure; contact stress;
D O I
10.1016/j.still.2004.07.008
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
The use of heavy machinery is increasing in agriculture, which induces increased risks of subsoil compaction. Hence, there is a need for technical solutions that reduce the compaction risk at high total machine loads. Three field experiments were performed in order to study the effects of dual wheels, tandem wheels and tyre inflation pressure on stress propagation in soil. Vertical soil stress was measured at three different depths by installing probes into the soil horizontally from a dug pit. In one experiment, also the stress distribution below the tyre was measured. Beneath the dual wheels, vertical stresses at 0.15 and 0.3 m depth were lower between the two wheels than under the centre of each wheel, despite the gap between the wheels being small (0.1 m). At 0.5 m depth, vertical stress beneath the wheels was the same as between the two wheels. The stress interaction from the two wheels was weak, even in the subsoil. Accordingly, measured stresses at 0.3, 0.5 and 0.7 m depth were highest under the centre of each axle centre line of tandem wheels, and much lower between the axles. For a wheel load of 86 kN, tyre inflation pressure significantly affected stress at 0.3 m depth, but not at greater depths. Stress directly below the tyre, measured at 0.1 m depth, was unevenly distributed, both in driving direction and perpendicular to driving direction, and maximum stress was considerably higher than tyre inflation pressure. Calculations of vertical stress based on Boussinesq's equation for elastic materials agreed well with measurements. A parabolic or linear contact stress distribution (stress declines from the centre to the edge of the contact area) was a better approximation of the contact stress than a uniform stress distribution. The results demonstrate that stress in the soil at different depths is a function of the stress on the surface and the contact area, which in turn are functions of wheel load, wheel arrangement, tyre inflation pressure, contact stress distribution and soil conditions. Soil stress and soil compaction are a function of neither axle load nor total vehicle load. This is of great importance for practical purposes. Reducing wheel load, e.g. by using dual or tandem wheels, also allows tyre inflation pressure to be reduced. This reduces the risk of subsoil compaction. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:191 / 205
页数:15
相关论文
共 54 条
[1]   Prevention strategies for field traffic-induced subsoil compaction: a review Part 1. Machine/soil interactions [J].
Alakukku, L ;
Weisskopf, P ;
Chamen, WCT ;
Tijink, FGJ ;
van der Linden, JP ;
Pires, S ;
Sommer, C ;
Spoor, G .
SOIL & TILLAGE RESEARCH, 2003, 73 (1-2) :145-160
[2]   Persistence of soil compaction due to high axle load traffic .1. Short-term effects on the properties of clay and organic soils [J].
Alakukku, L .
SOIL & TILLAGE RESEARCH, 1996, 37 (04) :211-222
[3]  
[Anonymous], 1988, World soil Resources Report No 60
[4]  
[Anonymous], 1953, GRUNDL LANDTECH
[5]  
Arvidsson J, 2002, ADV GEOECOL, V35, P331
[6]  
Arvidsson J., 1997, P 14 ISTRO C PUL POL, P47
[7]   Influence of the axle load, tyre size and configuration on the compaction of a freshly tilled clayey soil [J].
Botta, GF ;
Jorajuria, D ;
Draghi, LM .
JOURNAL OF TERRAMECHANICS, 2002, 39 (01) :47-54
[8]  
Boussinesq J, 1885, Application des potentiels a l'etude de l'equilibre et du mouvement des solides elastiques
[9]   TRACTIVE DEVICE EFFECTS ON SOIL PHYSICAL-PROPERTIES [J].
BROWN, HJ ;
CRUSE, RM ;
ERBACH, DC ;
MELVIN, SW .
SOIL & TILLAGE RESEARCH, 1992, 22 (1-2) :41-53
[10]  
BURT EC, 1992, T ASAE, V35, P401