超薄水泥混凝土路面荷载应力分析
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摘要
超薄水泥混凝土(UTW)路面是指在已严重恶化的旧沥青路面铣刨后的表面铺筑一层50～100mm厚的高早强、纤维增强混凝土形成的路面结构。作为一种新型、有效、快速、经济且简便的旧沥青路面维修技术，虽自Lousiville试验路后在美国已进行了大量试验路研究，但在路面结构荷载应力分析方面尚属空白。本文采用三维有限元法分析了UTW路面荷载应力，确定了路面板的临界荷位，得出了板接缝间距、厚度、板与地基模量比(Ec／Es)和层间接触状况对应力的影响规律。利用弹性三层体系，分析了沥青层对应力的影响规律。通过大量计算，提出了UTW路面荷载应力实用计算方法。最后，介绍了我国第一条UTW路面试验路的修筑情况。
Ultra-Thin Whitetopping Pavement is a recently developed,low-cost, effective, quickly and fairly simple rehabilitation technique in which a 50 to 100mm thick layer of high-early strength, fiber-reinforced concrete is placed over a milled surface of distressed asphalt concrete pavement. Since the Louisville UTW experiment, although, some UTW experimental projects have been built in United State, the loading stress of UTW pavement has not been analyzed by theoretical calculation.
In this paper, A three dimensional finite element analysis has been used to analyse the loading stress of UTW pavement. The critical loading position of UTW plate and the rules of the effect of the joint spacing of plate, the thickness of overlay, Ec/Es and the interface conditions between concrete overlay and existing AC on the stress are provided. The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system. On the basis of a great deal of calculation, a simple and rational calculation method of the loading stress of UTW Pavement is brought forward. In the end, first UTW experimental project in China is introduced.
Ultra-Thin Whitetopping Pavement is a recently developed,low-cost, effective, quickly and fairly simple rehabilitation technique in which a 50 to 100mm thick layer of high-early strength, fiber-reinforced concrete is placed over a milled surface of distressed asphalt concrete pavement. Since the Louisville UTW experiment, although, some UTW experimental projects have been built in United State, the loading stress of UTW pavement has not been analyzed by theoretical calculation.
In this paper, A three dimensional finite element analysis has been used to analyse the loading stress of UTW pavement. The critical loading position of UTW plate and the rules of the effect of the joint spacing of plate, the thickness of overlay, Ec/Es and the interface conditions between concrete overlay and existing AC on the stress are provided. The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system. On the basis of a great deal of calculation, a simple and rational calculation method of the loading stress of UTW Pavement is brought forward. In the end, first UTW experimental project in China is introduced.
引文
1．胡长顺、王秉纲．复合式路面设计原理与施工技术．北京：人民交通出版社，1999．
2．王秉纲、胡长顺．碾压混凝土加铺沥青层复合式路面结构设计理论与方法研究．西安公路交通大学．国家自然科学基金资助项目研究报告集，1995．
3. James K.Cable, James D.Grove, Melinda Heyer. Ultrathin Pavements making the grade.
4. Jamshid M. Armaghani, Diep Tu. Performance of Ultra-Thin Whitetopping in Florida.
5. Lawrence W.Cole. Pavement condition surveys of ultrathin whitetopping projects.
6. Charles J.Churilla. Ultra-Thin Whitetopping. Public Roads, Vol.62, No.2, 1998.
7．聂新跃．碾压混凝土与沥青混凝土复合式路面结构荷载应力分析．西安公路学院，[硕士论文]，1994．
8．陈鹏．路桥过渡段路面结构设计与施工方法研究．西安公路交通大学，[硕士论文]，1998．
9．王勖成、邵敏．有限单元法基本原理和数值方法．北京：清华大学出版社，1997．
10．申爱琴．水泥与水泥混凝土．北京：人民交通出版社，2000．
11．中华人民共和国行业标准．公路水泥混凝土路面设计规范(JYJ012-94)．北京：人民交通出版社，1994．
12．中华人民共和国行业标准．公路养护技术规范(JTJ073-96)．北京：人民交通出版社，1996．
13．中华人民共和国行业标准．公路路基路面现场测试规程(JTJ059-95)．北京：人民交通出版社，1995．
14．中华人民共和国行业标准．公路工程水泥混凝土试验规程
(JTJ053-94)．北京：人民交通出版社，1994．
15．姚祖康．路面(公路设计手册)．北京：人民交通出版社，1993．
16．贾玉钧、胡长顺、王秉纲．复合式路面荷载应力的统一分析方法．西安公路交通大学学报，No．4，1995．
17. Speakman, J.N.Sott Ⅲ. Ultra-Thin, Firber Reinforeed Overlays for urban Intersections. Transportation Research Record, TRB, National Research Council, Washington, D.C, 1996.
18. Cole, L. Ultra-Thin Research Advances Whitetopping Technology. Concrete Construction Magazine, No.6, 1995.
19. Cole, L.w.and J.P.Moshen. Ultra-thin Concrete Overlays on Asphalt. Paper prepared for presentation at 1993 Transportation Association Annual conference, ACPA, 1993.
20．交通部水泥混凝土路面推广组．水泥混凝土路面研究．北京：人民交通出版社，1995．
21．武和平．高等级公路路面结构设计方法．北京：人民交通出版社，1999．
22．周德云、姚祖康．旧水泥混凝土路面上沥青加铺层结构的三维有限元分析．中国公路学报，No．3，1990．
23．李红、傅智．如何在老沥青路面上加铺水泥混凝土路面．国外公路．No．6，1997．
24．戴建国、黄承逵．网状聚丙烯纤维混凝土的试验研究．混凝土与水泥制品，No．4，1999．
25. Lawrence W.Cole. Performance of Ultrathin Whitetopping Roadways. Fifth American Society of Civil Engineers Materials Engineering Congress May 10-12,1999 Cincinnati, Ohio,1999.
26. Lawrence W. Cole and James W. Mack. The U.S. Experience with Ultra-Thin Whitetopping. ACPA,1997.
2．王秉纲、胡长顺．碾压混凝土加铺沥青层复合式路面结构设计理论与方法研究．西安公路交通大学．国家自然科学基金资助项目研究报告集，1995．
3. James K.Cable, James D.Grove, Melinda Heyer. Ultrathin Pavements making the grade.
4. Jamshid M. Armaghani, Diep Tu. Performance of Ultra-Thin Whitetopping in Florida.
5. Lawrence W.Cole. Pavement condition surveys of ultrathin whitetopping projects.
6. Charles J.Churilla. Ultra-Thin Whitetopping. Public Roads, Vol.62, No.2, 1998.
7．聂新跃．碾压混凝土与沥青混凝土复合式路面结构荷载应力分析．西安公路学院，[硕士论文]，1994．
8．陈鹏．路桥过渡段路面结构设计与施工方法研究．西安公路交通大学，[硕士论文]，1998．
9．王勖成、邵敏．有限单元法基本原理和数值方法．北京：清华大学出版社，1997．
10．申爱琴．水泥与水泥混凝土．北京：人民交通出版社，2000．
11．中华人民共和国行业标准．公路水泥混凝土路面设计规范(JYJ012-94)．北京：人民交通出版社，1994．
12．中华人民共和国行业标准．公路养护技术规范(JTJ073-96)．北京：人民交通出版社，1996．
13．中华人民共和国行业标准．公路路基路面现场测试规程(JTJ059-95)．北京：人民交通出版社，1995．
14．中华人民共和国行业标准．公路工程水泥混凝土试验规程
(JTJ053-94)．北京：人民交通出版社，1994．
15．姚祖康．路面(公路设计手册)．北京：人民交通出版社，1993．
16．贾玉钧、胡长顺、王秉纲．复合式路面荷载应力的统一分析方法．西安公路交通大学学报，No．4，1995．
17. Speakman, J.N.Sott Ⅲ. Ultra-Thin, Firber Reinforeed Overlays for urban Intersections. Transportation Research Record, TRB, National Research Council, Washington, D.C, 1996.
18. Cole, L. Ultra-Thin Research Advances Whitetopping Technology. Concrete Construction Magazine, No.6, 1995.
19. Cole, L.w.and J.P.Moshen. Ultra-thin Concrete Overlays on Asphalt. Paper prepared for presentation at 1993 Transportation Association Annual conference, ACPA, 1993.
20．交通部水泥混凝土路面推广组．水泥混凝土路面研究．北京：人民交通出版社，1995．
21．武和平．高等级公路路面结构设计方法．北京：人民交通出版社，1999．
22．周德云、姚祖康．旧水泥混凝土路面上沥青加铺层结构的三维有限元分析．中国公路学报，No．3，1990．
23．李红、傅智．如何在老沥青路面上加铺水泥混凝土路面．国外公路．No．6，1997．
24．戴建国、黄承逵．网状聚丙烯纤维混凝土的试验研究．混凝土与水泥制品，No．4，1999．
25. Lawrence W.Cole. Performance of Ultrathin Whitetopping Roadways. Fifth American Society of Civil Engineers Materials Engineering Congress May 10-12,1999 Cincinnati, Ohio,1999.
26. Lawrence W. Cole and James W. Mack. The U.S. Experience with Ultra-Thin Whitetopping. ACPA,1997.