| 摘要 |
<p>For controlling a roller machine having a vibrating drum (7) in the compaction of a ground material the roller is moved over a segment of the ground while the shear modulus (G) and a plastic parameter (p) of the passed segment are determined. From these determined values, in particular the value of the shear modulus (G), new values of the frequency and/or of the amplitude of the vibration and/or of the rolling velocity of the roller are determined, which are used for adjusting the roller machine. In the measurement of the shear modulus two accelerometers (3, 5) are used for determining, during the passing of a segment of the ground, the acceleration of the roller drum (7) in at least an essentially vertical direction. The amplitude and the phase position of the eccentric system in relation to the acceleration are determined by using, among other things, a pulse sensor (2). Therefrom and from fixed data of the roller and the eccentric system, in particular the mass (md) of the roller and the mass and the amplitude of the eccentric system, the shear modulus (G) of the ground is determined by means of integration of state equations. Then the plastic parameter (p) is also obtained.</p> |
