| 水泥混凝土路面嵌缝料复数剪切模量测试条件 |
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| 引用本文： | 孙艳娜,李立寒,耿韩,吕天华.水泥混凝土路面嵌缝料复数剪切模量测试条件[J].中国公路学报,2010(2). |
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| 作者姓名： | 孙艳娜 李立寒 耿韩 吕天华 |
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| 作者单位： | 同济大学道路与交通工程教育部重点试验室; |
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| 基金项目： | 国家西部交通建设科技项目(200731822301-9) |
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| 摘 要： | 进行了水泥混凝土路面嵌缝料剪切受力状态的理论分析和室内模拟试验,在此基础上,确定了嵌缝料剪切试验中的剪切应变和剪切频率等测试条件。理论分析结果表明:考虑板底脱空状态,嵌缝料在水泥混凝土路面中剪切应变为0.002~0.01;车轮荷载对混凝土板的振动频率小于混凝土板的固有频率,不会发生共振现象,嵌缝料的剪切频率由车轮荷载对混凝土板的振动频率决定,剪切频率范围为10~40 Hz。室内模拟试验结果表明:在5℃下,嵌缝料线性粘弹性应变为0.005,实验室可实现的应变为0.004。综合两者,确定水泥混凝土路面嵌缝料复数剪切模量的测试条件为:剪切应变0.004,剪切频率2~50 Hz。
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| 关 键 词： | 道路工程 水泥混凝土路面 室内模拟试验 复数剪切模量 嵌缝料 剪切应变 剪切频率 |
Research on Testing Condition of Complex Shear Modulus of Joint Sealant for Cement Concrete Pavement |
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| SUN Yan-na,LI Li-han,GENG Han,LU Tian-hua.Research on Testing Condition of Complex Shear Modulus of Joint Sealant for Cement Concrete Pavement[J].China Journal of Highway and Transport,2010(2). |
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| Authors: | SUN Yan-na LI Li-han GENG Han LU Tian-hua |
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| Institution: | SUN Yan-na,LI Li-han,GENG Han,LU Tian-hua (Key Laboratory of Road , Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China) |
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| Abstract: | Theoretical analysis of shear force of joint sealant for cement concrete pavement and the laboratory simulated test were carried out.The shear strain and the shear frequency of joint sealant could be confirmed.Theoretical analysis results show that considering void beneath slab,the shear strain of joint sealant for cement concrete pavement is 0.002 to 0.01.The vibrating frequency caused by load is less than the natural frequency of cement concrete slab,so there is no resonance phenomenon and the shear frequ... |
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| Keywords: | road engineering cement concrete pavement laboratory simulated test complex shear modulus joint sealant shear strain shear frequency |
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