Deformation properties of asphalt mixtures for steel bridge deck through repeated load triaxial test
-
摘要: 为了研究钢桥面铺装材料的高温变形特性及其车辙预估方法, 针对MA及SMA两种钢桥面铺装混合料, 采用三轴重复加载试验评价其高温性能, 并根据试验结果, 通过多元线性回归得到材料的非线性计算模型参数, 使用ABAQUS有限元软件, 模拟三轴试验过程, 将计算变形与实测变形相比较。发现两种混合料高温变形发展规律以及对不同荷载条件的响应方式不同, SMA具有优异的高温抗变形能力; 有限元模拟的误差约为10%。分析结果表明: 采用三轴重复加载试验和多元线性回归确定材料的非线性计算模型参数的方法可靠, 模型参数可用于沥青桥面铺装的车辙变形预估。Abstract: In order to study the deformation properties of steel deck pavement under high temperature and their rutting predictions, two types of asphalt mixtures, mastic asphalt(MA) and stone mastic asphalt(SMA), were invited, and their high temperature performances were evaluated through repeated load triaxial test(RLTT). Through the multivariate linear regressive analysis of test result, the nonlinear parameters of asphalt mixtures were obtained, finite element software ABAQUS was applied to simulate the process of RLTT, and the calculalted deformation and measured deformation were compared. It is found that the natures of high temperature deformation developments for two mixtures, as well as the response manners to different load conditions, are completely different, SMA has an overwhelmingly excellent deformation resistance, and the calculation error of FEM is about 10%. The result indicates that it's reasonable to get the nonlinear parameters through multivariate linear regressive analysis from RLTT result, and it's qualified to apply these parameters to conduct the rutting prediction of asphalt pavement on steel bridge.
-
图 9 计算及实测变形发展
Figure 9. Developments of calculated deformation and measured deformation
-
[1] 沈金安. 沥青与沥青混合料路用性能[M]. 北京: 人民交通出版社, 2001. [2] 陈忠达, 袁万杰, 薛航, 等. 沥青混合料高温性能评价指标[J]. 长安大学学报: 自然科学版, 2006, 26(5): 1-4. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200605000.htmCHEN Zhong-da, YUAN Wan-jie, XUE Hang, et al. High temperature stability index of hot mixed asphalt[J]. Journal of Chang an University: Natural Science Edition, 2006, 26(5): 1-4. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XAGL200605000.htm [3] 岳学军, 黄晓明. 沥青混合料高温稳定性评价指标的试验研究[J]. 公路交通科技, 2006, 23(10): 37-40. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200610008.htmYUE Xue-jun, HUANG Xiao-ming. Experi ment research on high-temperature deformation indexes of asphalt mixtures[J]. Journal of Highway and Transportation Research and Deve-lopment, 2006, 23(10): 37-40. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200610008.htm [4] BARKSDALE R D, MILLER J H. Development of equip-ment andtechniques for evaluatingfatigue and rutting charac-teristics of asphalt concrete mixes[R]. Atlanta: Georgia In-stitute of Technology, 1977. [5] KALOUSH K E. Si mple performance test for permanent de-formation of asphalt mixtures[D]. Tempe: Arizona State University, 2001. [6] 邓学钧. 中国江阴长江大桥桥面沥青铺装层高温稳定性[J]. 交通运输工程学报, 2002, 2(2): 1-7. http://transport.chd.edu.cn/article/id/200202001DENG Xue-jun. Asphalt pavement stability at high-tempera-ture for the Jiangyin bridge in China[J]. Journal of Traffic and Transportation Engineering, 2002, 2(2): 1-7. (in Chi-nese). http://transport.chd.edu.cn/article/id/200202001 [7] 张祥, 李洪涛, 赵永军. 江阴长江公路大桥钢桥面铺装设计[J]. 铁道标准设计, 2005, 49(5): 68-71. https://www.cnki.com.cn/Article/CJFDTOTAL-TDBS20050500P.htmZHANG Xiang, LI Hong-tao, ZHAO Yong-jun. Pavement design of Yangtze river highway bridge in Jiangyin[J]. Rail-way Standard Design, 2005, 49(5): 68-71. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDBS20050500P.htm [8] 吴光蓉, 牟建波, 陈仕周, 等. 钢桥桥面铺装方案环道试验研究[J]. 公路, 2001, 46(1): 20-23. https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL200101005.htmWU Guang-rong, MUJian-bo, CHENShi-zhou, et al. Study on circular track test of steel deck pavement scheme[J]. Highway, 2001, 46(1): 20-23. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL200101005.htm [9] BROWN S F, COOPER K E. The Mechanical properties of bituminous materials for road bases and base courses[J]. Journal of the Association of Asphalt Paving Technologists, 1984, 53(4): 10-15. https://trid.trb.org/view/725969 [10] 黄菲. 沥青路面永久变形数值模拟及车辙预估[D]. 南京: 东南大学, 2006. -
下载:
点击查看大图
图(9) / 表(8)
计量
- 文章访问数: 390
- HTML全文浏览量: 160
- PDF下载量: 519
- 被引次数: 0
