Interlayer combination state of double-layer continuous paving semi-rigid base
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摘要: 为了提高寒冷地区道路基层使用寿命, 研究了半刚性基层层间黏结机理, 设计了适用于基层试件的直剪模具, 对基层层间抗拉强度和抗剪强度进行试验, 分析了不同摊铺方法对基层层间结合效果的影响。运用BISAR3.0软件, 设定了不同的层间摩擦因数, 在不同层间结合状态下计算了各结构层层底拉应力分布情况, 提出了适用于北方寒冷地区沥青混合料与水稳碎石混合料的疲劳方程, 计算了双层连续摊铺工艺下路面的使用寿命。计算结果表明: 采用双层连续摊铺时, 基层试件层间抗拉性能较传统试件提高了1.8倍, 但仅达到了标准试件抗拉强度的37.9%, 双层连续摊铺距离层间结合理想状态(完全连续)还有一定的差距; 在抗剪强度上, 双层连续摊铺相比于传统摊铺工艺提高了7.3倍, 采用双层连续摊铺施工可以有效改善基层路用性能; 随着层间摩擦因数的提高, 各结构层层底拉应力不断减小。可见, 双层连续摊铺可以有效提高半刚性基层层间结合效果, 改善层底应力分布, 使路面结构寿命提高了16.1%~47.4%。Abstract: In order to improve the service life of road base in cold area, the bonding mechanism of semirigid base was studied, and the direct shear mould for base layer specimen was designed.Based on the tests of tensile strength and shear strength of base layer, the influences of different paving methods on the combination effect of base layer were analyzed.By using software BISAR3.0, different interlayer friction coefficients were set, the distributions of tensile stress at the bottom of each structure were calculated under different interlayer combination states.The fatigue equations of asphalt mixture and water stable crushed stone mixture suitable for northern cold area were put forward, and the service lifeof pavement under double-layer continuous paving process was calculated.Calculation result indicates that when using double-layer continuous paving, the tensile property of base layer specimen increases by 1.8 times compared with traditional specimen, but only 37.9% of the tensile strength of standard specimen is achieved.There is a certain gap between double-layer continuous paving and ideal state(completely continuous).For the shear strength, the effect of double-layer continuous paving increases by 7.3 times compared with traditional paving process.The performance of road base is effectively improved by using double-layer continuous paving construction.With the increase of interlayer friction coefficient, the tensile stress at the bottom of each structure decreases.Therefore, the combination effect of semi-rigid base layer can be effectively improved by using double-layer continuous paving, which can improve the stress distribution of the bottom of layer and increase the service life of pavement structure by 16.1%-47.4%.
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[1] 平国超. 水泥稳定碎石基层双层连续摊铺施工工艺与质量控制[D]. 天津: 河北工业大学, 2013.PING Guo-chao. Construction technique and quality control of double layers continous paving of cementstabilized macadam base[D]. Tianjin: Hebei University of Technology, 2013. (in Chinese). [2] CANESTRARI F, FERROTTI G, PARTL M N, et al. Advanced testing and characterization of interlayer shear resistance[J]. Transportation Research Record, 2005(1929): 69-78. [3] DAS S, HARDT S. Electric-double-layer potential distribution in multiple-layer immiscible electrolytes[J]. Physical Review E: Statistical Nonlinear and Soft Matter Physics, 2011, 84(1): 1572-1586. [4] MOHAMMAD L N, HASSAN M, PATEL N. Effects of shear bond characteristics of tack coats on pavement performance at the interface[J]. Transportation Research Record, 2011(2209): 1-8. [5] 王选仓, 王吉昌, 杨育生, 等. 沥青路面双层摊铺与传统摊铺等效厚度转换试验研究[J]. 公路交通科技, 2014, 31(1): 21-25. doi: 10.3969/j.issn.1002-0268.2014.01.005WANG Xuan-cang, WANG Ji-chang, YANG Yu-sheng, et al. Experimental study on asphalt pavement thickness equivalent conversion between double-layer paving and traditional paving[J]. Journal of Highway and Transportation Research and Development, 2014, 31(1): 21-25. (in Chinese). doi: 10.3969/j.issn.1002-0268.2014.01.005 [6] 任福松, 傅志强. 双层连续摊铺水泥稳定碎石基层[J]. 交通标准化, 2010(3): 163-166. doi: 10.3869/j.1002-4786.2010.02.03.035REN Fu-song, FU Zhi-qiang. Continuous double layer paving cement stabilized macadam base[J]. Communications Standardization, 2010(3): 163-166. (in Chinese). doi: 10.3869/j.1002-4786.2010.02.03.035 [7] 丛林, 郭忠印, 暨育雄, 等. 半刚性基层材料性能参数的试验研究[J]. 建筑材料学报, 2001, 4(4): 385-390. doi: 10.3969/j.issn.1007-9629.2001.04.015CONG Lin, GUO Zhong-yin, JI Yu-xiong, et al. Experimental study on the performance of semi-rigid base coarse materials[J]. Journal of Building Materials, 2001, 4(4): 385-390. (in Chinese). doi: 10.3969/j.issn.1007-9629.2001.04.015 [8] 严二虎, 沈金安. 半刚性基层与沥青层之间界面条件对结构性能的影响[J]. 公路交通科技, 2004, 21(1): 38-41. doi: 10.3969/j.issn.1002-0268.2004.01.012YAN Er-hu, SHEN Jin-an. Structural influence of boundary condition between asphalt layer and semi-rigid base[J]. Journal of Highway and Transportation Research and Development, 2004, 21(1): 38-41. (in Chinese). doi: 10.3969/j.issn.1002-0268.2004.01.012 [9] 张久鹏, 武书华, 裴建中, 等. 基于剪切弹性柔量的基-面层间接触状态及路面力学响应分析[J]. 公路交通科技, 2013, 30(1): 6-11, 16. doi: 10.3969/j.issn.1002-0268.2013.01.002ZHANG Jiu-peng, WU Shu-hua, PEI Jian-zhong, et al. Analysis of interlayer contact condition between base and mechanical response ofasphalt pavement and surface course based on shear elastic compliance[J]. Journal of Highway and Transportation Research and Development, 2013, 30(1): 6-11, 16. (in Chinese). doi: 10.3969/j.issn.1002-0268.2013.01.002 [10] LIU Zhen-ya, LIU Jing-yu, WANG Qing-zhi, et al. Compressive strength and frost heave resistance of different types of semirigid base materials after freeze-thaw cycles[J]. Sciences in Cold and Arid Regions, 2015, 7(4): 365-369. [11] 赵殿鹏, 杨平, 张豪. 基层层间状态对沥青路面荷载应力与疲劳性能的影响[J]. 森林工程, 2015, 31(5): 96-99. doi: 10.3969/j.issn.1001-005X.2015.05.022ZHAO Dian-peng, YANG Ping, ZHANG Hao. Effects of base course's interfacial bond on load stress and fatigue of asphalt pavement[J]. Forest Engineering, 2015, 31(5): 96-99. (in Chinese). doi: 10.3969/j.issn.1001-005X.2015.05.022 [12] HERNANDO D, VAL M A D. Guidelines for the design of semi-rigid long-life pavements[J]. International Journal of Pavement Research and Technology, 2016, 9(2): 121-127. doi: 10.1016/j.ijprt.2016.03.003 [13] LI Yu-chao, CLEALL P J. Analytical solutions for contaminant diffusion in double-layered porous media[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2010, 136(11): 1542-1554. doi: 10.1061/(ASCE)GT.1943-5606.0000365 [14] 武海燕. 水稳碎石基层双层连铺技术在某高速中的应用[J]. 山西建筑, 2011, 37(34): 146-147. doi: 10.3969/j.issn.1009-6825.2011.34.086WU Hai-yan. Application of water-bound foundation doublelayer paving technique in Pingyang Highway[J]. Shanxi Architecture, 2011, 37(34): 146-147. (in Chinese). doi: 10.3969/j.issn.1009-6825.2011.34.086 [15] 李炜光, 彭加武, 项柳福, 等. 层间状态对厚层水稳基层使用性能影响研究[J]. 武汉理工大学学报, 2010, 32(14): 53-57. doi: 10.3963/j.issn.1671-4431.2010.14.012LI Wei-guang, PENG Jia-wu, XIANG Liu-fu, et al. Research on the service performances effect of states between layers on thick cement stabilized base[J]. Journal of Wuhan University of Technology, 2010, 32(14): 53-57. (in Chinese). doi: 10.3963/j.issn.1671-4431.2010.14.012 [16] 穆柯. 沥青路面面层双层一体摊铺技术研究[D]. 西安: 长安大学, 2012.MU Ke. Research on double-layer paving technology for asphalt pavement[D]. Xi'an: Chang'an University, 2012. (in Chinese). [17] 武书华. 半刚性基层沥青路面基面层间剪切疲劳特性及接触状态评价研究[D]. 西安: 长安大学, 2013.WU Shu-hua. Study on shearing fatigue property and evaluation of interlayer contact condition between base course and surface course for semi-rigid base asphalt pavement[D]. Xi'an: Chang'an University, 2013. (in Chinese). [18] SUO Li-jun, WANG Xin-wu. Analysis of load stress for asphalt pavement of lean concrete base[J]. Physics Procedia, 2012, 24(1): 404-411. [19] THAI H T, UY B, KANG W H, et al. System reliability evaluation of steel frames with semi-rigid connections[J]. Journal of Constructional Steel Research, 2016, 121: 29-39. doi: 10.1016/j.jcsr.2016.01.009 [20] 王宏畅, 黄晓明, 傅智. 半刚性基层材料路用性能的试验研究[J]. 公路交通科技, 2005, 22(11): 45-49. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200511011.htmWANG Hong-chang, HUANG Xiao-ming, FU Zhi. Experimental study on the performance of semi-rigid base course materials[J]. Journal of Highway and Transportation Research and Development, 2005, 22(11): 45-49. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200511011.htm [21] WU Jian-min, LIANG Jia-ping, ADHIKARI S. Dynamic response of concrete pavement structure with asphalt isolating layer under moving loads[J]. Journal of Traffic and Transportation Engineering: English Edition, 2014, 1(6): 439-447. [22] LI Sheng, LIU Xing-wu, LIU Zhao-hui. Interlaminar shear fatigue and damage characteristics of asphalt layer for asphalt overlay on rigid pavement[J]. Construction and Building Materials, 2014, 68: 341-347. [23] 裴旭东. 沥青面层与基层层间黏结强度和耐久性变化规律研究[D]. 西安: 长安大学, 2013.PEI Xu-dong. Research on variation of bond strength anddurability between asphalt pavement surface and base[D]. Xi'an: Chang'an University, 2013. (in Chinese). [24] 徐静. 水泥稳定碎石基层抗弯拉性能试验研究[D]. 大连: 大连理工大学, 2013.XU Jing. The experimental study on flexural tensile performance ofcement stabilized macadam base[D]. Dalian: Dalian University of Technology, 2013. (in Chinese). [25] 李长城, 刘小明, 荣建. 不同路面状况对路面摩擦系数影响的试验研究[J]. 公路交通科技, 2010, 27(12): 27-32. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK201012007.htmLI Chang-cheng, LIU Xiao-ming, RONG Jian. Experimental study on effect of road condition on pavement friction coefficient[J]. Journal of Highway and Transportation Research and Development, 2010, 27(12): 27-32. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK201012007.htm -
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