发明授权
- 专利标题： Determination of subgrade modulus and stiffness of pavement layers for measurement of bearing capacity under fast moving wheel load
- 专利标题（中）： 确定快速移动轮荷载下测量承载力的路面层的路基模量和刚度
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申请号： US12906913申请日： 2010-10-18
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公开(公告)号： US08892367B2公开(公告)日： 2014-11-18
- 发明人: Per Ullidtz
- 申请人： Per Ullidtz
- 申请人地址： DK Glostrup
- 专利权人： Dynatest International A/S
- 当前专利权人： Dynatest International A/S
- 当前专利权人地址： DK Glostrup
- 代理机构： Koppel, Patrick, Heybl & Philpott
- 主分类号： G01L5/00
- IPC分类号： G01L5/00 ; G01B21/20 ; G01M5/00 ; G01B21/32 ; G01B21/08
摘要：
The present invention directed to rolling weight deflectometers having sensors to measure pavement deflection, and to provide test data to determine the subgrade modulus and equivalent thickness of pavements. This information is then utilized to determine more than deflection and according to the present invention is utilized to determine critical strain parameters that can be applied to predict bearing capacity, rutting and roughness characteristics of pavements. This invention enhances the value of pavement testing while at the same time allowing for testing systems having fast moving wheel loads. The collected data can be used to determine vertical compressive strain and horizontal tensile strain, which can be more valuable for the prediction of remaining life time and recommendations for repair and maintenance.
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