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Influence of Trailer Tandem-Axle Versus Tridem-Axle on Pavement Damage and Dynamic Performance
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Abstract
This paper reports a study on the effect of a semitrailer’s axle arrangements, tandem-axle versus tridem-axle, on dynamic performance and pavement damage potential of tractor semitrailers. Generally, dynamic performance properties of both tandem and tridem axles tend to deteriorate with increasing axle spread and maximum axle weight limit. Friction demand in particular is sensitive to tridem axle spread. There are maximum spreads and weight limits for both tridem and tandem axles to satisfy the dynamic performance measures. Tridem axle spreads between 2.4m and 3.6m and weight limits less than or equal to 27000kg satisfy the current dynamic performance criteria. Tandem axle spread less than 2.4m and weight less than 20000kg exhibit adequate dynamic performance properties. In the transportation of dense commodities, it is operationally more efficient to use semitrailers with a tridem axle than one with a tandem axle for gross vehicle weights less than 48,000 kg (i.e. tridem axle spread around 3.6m and maximum weight of about 25000 kg). Relative to the tandem axle, operational performance is greatly improved with the tridem trailer axle.
American Society of Mechanical Engineers
Title: Influence of Trailer Tandem-Axle Versus Tridem-Axle on Pavement Damage and Dynamic Performance
Description:
Abstract
This paper reports a study on the effect of a semitrailer’s axle arrangements, tandem-axle versus tridem-axle, on dynamic performance and pavement damage potential of tractor semitrailers.
Generally, dynamic performance properties of both tandem and tridem axles tend to deteriorate with increasing axle spread and maximum axle weight limit.
Friction demand in particular is sensitive to tridem axle spread.
There are maximum spreads and weight limits for both tridem and tandem axles to satisfy the dynamic performance measures.
Tridem axle spreads between 2.
4m and 3.
6m and weight limits less than or equal to 27000kg satisfy the current dynamic performance criteria.
Tandem axle spread less than 2.
4m and weight less than 20000kg exhibit adequate dynamic performance properties.
In the transportation of dense commodities, it is operationally more efficient to use semitrailers with a tridem axle than one with a tandem axle for gross vehicle weights less than 48,000 kg (i.
e.
tridem axle spread around 3.
6m and maximum weight of about 25000 kg).
Relative to the tandem axle, operational performance is greatly improved with the tridem trailer axle.
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