| 引用本文: | 张君,陈切顺,王振波,陈崇哲,郭自力,傅玉勇.无切缝水泥混凝土路面设计与建造[J].哈尔滨工业大学学报,2017,49(3):68.DOI:10.11918/j.issn.0367-6234.2017.03.011 |
| ZHANG Jun,CHEN Qieshun,WANG Zhenbo,CHEN Chongzhe,GUO Zili,FU Yuyong.Design and construction of jointless concrete pavement[J].Journal of Harbin Institute of Technology,2017,49(3):68.DOI:10.11918/j.issn.0367-6234.2017.03.011 |
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| 无切缝水泥混凝土路面设计与建造 |
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张君1,陈切顺2,王振波1,陈崇哲2,郭自力1,傅玉勇3
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(1.结构安全与耐久教育部重点实验室(清华大学), 北京 100084; 2.河北省廊坊市交通公路工程有限公司, 河北 廊坊 065000; 3. 天津华夏建筑设计有限公司, 天津 300000)
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| 摘要: |
| 水泥混凝土路面具有使用寿命长、养护工作量小、能耗低、施工简便等优点，但是水泥混凝土路面行车舒适度不如沥青混凝土路面.而舒适度不佳最主要原因是切缝的存在，使行车时产生“咯噔”跳车现象.此外，切缝的存在也将严重影响混凝土路面的耐久性，增加维修维护费用.针对上述问题，提出并实践了无切缝水泥混凝土路面设计与建造技术.设置高延性低干缩纤维增强水泥基复合材料 (low shrinkage engineered cementitious composites) 延性段取代传统混凝土路面切缝，LSECC可形成多条细微裂纹吸收两侧混凝土路面板的收缩和温度变形.通过施工现场模具和工艺设计，实现了界面锚固钢筋的定位和LSECC后浇空间预留及反射裂缝的定位，模具拆除后进行LSECC材料浇筑，实现了无缝路面的设计理念.
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| 关键词: 水泥混凝土路面 无切缝 延性段 设计 建造 |
| DOI：10.11918/j.issn.0367-6234.2017.03.011 |
| 分类号:TU997 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51278278) |
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| Design and construction of jointless concrete pavement |
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ZHANG Jun1,CHEN Qieshun2,WANG Zhenbo1,CHEN Chongzhe2,GUO Zili1,FU Yuyong3
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（1.Key Laboratory of Structural Safty and Durability(Tsinghua University), Ministry of Education, Beijing 100084, China; 2.Langfang Transportation and Highway Engineering Co., Ltd., Langfang 065000, Hebei, China; 3.Tianjin Huaxia Architecture Design Co., Ltd.,Tianjin 300000, China）
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| Abstract: |
| Concrete pavement is widely used due to its long service life, low maintenance requirements, low energy consumption and simple construction. However, the driving comfort of concrete pavement is normally lower than that of asphalt pavement due to the existence of cutting joints. Meanwhile, the cutting joints may reduce the durability of concrete pavement that in turn increases the maintenance cost as well. In order to solve these problems, this paper presents a novel construction technique of concrete pavement, called jointless concrete pavement. By setting low shrinkage engineered fiber reinforced cementitious composite (LSECC) strips at the place of cutting joints of conventional concrete pavement, it is possible to localize the fine cracks into the LSECC strip instead of cracking in adjacent concrete slabs. The design methods for length of the ductile strip and the parameters of anchoring bars were proposed. The concept and design method of jointless concrete pavement was successfully used in practice.
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| Key words: concrete pavement jointless ductile strip design construction |
