Development laws of transverse cracking for continuously reinforced concrete pavement
-
摘要: 为了了解连续配筋混凝土路面(CRCP) 横向开裂的实际发展规律, 对湖南省耒宜高速公路CRCP试验路进行了5.5a的跟踪调查与检测, 对裂缝间距和裂缝宽度的测试结果进行了统计分析。分析结果表明: 随着龄期的增长, CRCP横向开裂按产生速度的快慢可分为硬化开裂期、过渡开裂期和稳定开裂期, 裂缝间距和裂缝宽度的变异系数一般分别在0.30~0.35和0.20~0.25之间, 平均裂缝间距与龄期之间呈现良好的幂函数关系, 平均裂缝宽度与气温之间存在良好的线性关系, 裂缝间距服从正态分布规律。Abstract: In order to understand the real development laws of transverse cracking for continuously reinforced concrete pavement (CRCP), a CRCP trial road on Leiyang-Yizhang expressway of Hunan Province had been investigated and tested for 5.5 a, and the test results of crack space and crack width were analyzed by using statistical method.Analysis result shows that CRCP transverse cracking can be divided into 3 periods with its age increase according to cracking development speed, including hardened cracking, transition cracking and stabilized cracking; in general, the variance coefficients of crack space and crack width are respectively 0.30~0.35 and 0.20~0.25;there is a fine power function relation between average crack space and CRCP age, there is a good linear function relation between average crack width and air temperature, and crack space accords with normal distribution.
-
Key words:
- pavement engineering /
- CRCP /
- transverse cracking /
- crack space /
- crack width
-
表 1 横向开裂调查结果
Table 1. Investigating result of transverse cracking
序号 观测时间 龄期t/d 气温T/℃ 裂缝数N/条 裂缝间距 裂缝宽度 平均值l/m 标准差σl/m 变异系数δl 平均值w/mm 标准差σw/mm 变异系数δw 1 2001-05-27 20 22 31 29.67 22.22 0.749 0.294 0.065 0.223 2 2001-05-29 22 20 62 17.87 13.65 0.764 0.325 0.084 0.258 3 2001-06-20 44 34 79 14.50 8.57 0.591 0.249 0.068 0.271 4 2001-06-25 49 31 82 13.96 8.63 0.618 0.270 0.102 0.378 5 2001-07-19 73 32 84 13.18 7.56 0.574 0.318 0.063 0.199 6 2001-09-05 121 25 126 9.13 5.98 0.655 0.327 0.076 0.233 7 2001-11-23 200 13 189 6.14 4.05 0.660 0.476 0.105 0.221 8 2002-06-04 393 29 228 4.87 1.70 0.349 — — — 9 2003-01-23 626 12 247 4.45 1.55 0.348 0.546 0.190 0.348 10 2003-10-02 878 22 284 3.87 1.29 0.333 — — — 11 2004-10-03 1 245 25 325 3.38 1.12 0.331 — — — 12 2005-10-03 1 610 21 356 3.09 1.01 0.327 — — — 13 2006-12-29 2 062 3 378 2.91 0.94 0.323 — — — 
下载: 导出CSV
表 2 概率分布检验
Table 2. Test of probability distribution
变量 样本数 平均值 标准差 统计值D 临界值Dn 检验结论 l/m 228 4.87 1.70 0.076 4 0.089 2 符合正态分布 ln (l) 228 1.51 0.40 0.114 5 0.089 2 不符合对数正态分布
下载: 导出CSV
-
[1] 胡长顺, 曹东伟. 连续配筋混凝土路面结构设计理论与方法研究[J]. 交通运输工程学报, 2001, 1 (2): 57-62.Hu Chang-shun, Cao Dong-wei. On the design theory andmethod of continuously reinforced concrete pavement (CRCP)[J]. Journal of Traffic and Transportation Engineering, 2001, 1 (2): 57-62. (in Chinese) [2] 查旭东, 王燕, 韩春华. 欧洲水泥混凝土路面综述[J]. 国外公路, 1999, 19 (3): 16-22.Zha Xu-dong, Wang Yan, Han Chun-hua. Summary of cement concrete pavement in Europe[J]. Journal of Foreign Highway, 1999, 19 (3): 16-22. (in Chinese) [3] 查旭东, 张起森, 李宇峙, 等. 高速公路连续配筋混凝土路面施工技术研究[J]. 中外公路, 2003, 23 (1): 1-4.Zha Xu-dong, Zhang Qi-sen, Li Yu-shi, et al. Study of construction technology for continuously reinforced concrete pavement in expressway[J]. Journal of China and Foreign Highway, 2003, 23 (1): 1-4. (in Chinese) [4] JTG D40—2002, 公路水泥混凝土路面设计规范[S]. [5] AASHTO. AASHTO Guide for Design of Pavement Structures[M]. Washington DC: AASHTO, 1993. [6] 曹东伟, 胡长顺. 连续配筋混凝土路面温度应力分析[J]. 西安公路交通大学学报, 2001, 21 (2): 1-5.Cao Dong-wei, Hu Chang-shun. Analysis of thermal stress for continuously reinforced concrete pavement (CRCP)[J]. Journal of Xi'an Highway University, 2001, 21 (2): 1-5. (in Chinese) [7] 田寅春, 胡长顺, 王秉纲. 连续配筋混凝土路面荷载应力分析[J]. 西安公路交通大学学报, 2000, 20 (3): 6-10.Tian Yin-chun, Hu Chang-shun, Wang Bing-gang. Analysis of load stress of continuously reinforced concrete pavement (CRCP)[J]. Journal of Xi'an Highway University, 2000, 20 (3): 6-10. (in Chinese) [8] 陈云鹤, 邓学钧, 周早生. 连续配筋混凝土路面温度应力的弹性解[J]. 应用力学学报, 2000, 17 (4): 76-80.Chen Yun-he, Deng Xue-jun, Zhou Zao-sheng. Elastic solution for thermal stress in continuously reinforced concrete pavement (CRCP)[J]. Chinese Journal of Applied Mechanics, 2000, 17 (4): 76-80. (in Chinese) [9] 肖秋明, 查旭东, 张起森. 连续配筋混凝土路面一维非线性力学分析[J]. 长沙交通学院学报, 2004, 20 (3): 20-26.Xiao Qiu-ming, Zha Xu-dong, Zhang Qi-sen. One-dimensional nonlinear analysis of continuously reinforced concrete pavements[J]. Journal of Changsha Communications University, 2004, 20 (3): 20-26. (in Chinese) [10] Kohler E, Roesler J. Crack spacing and crack width investigation from experimental CRCP sections[J]. International Journal of Pavement Engineering, 2006, 7 (4): 331-340. [11] Suh Y C, Mccullough B F. Factors affecting crack width of continuously reinforced concrete pavement[C]∥TRB. Transportation Research Record 1449. Washington DC: TRB, 1994: 134-140. [12] Gharaibeh N G, Darter MI, Heckel L B. Field performance of continuously reinforced concrete pavement in Illinois[C]∥TRB. Transportation Research Record 1684. Washington DC: TRB, 1999: 44-50. -
点击查看大图
图(4) / 表(2)
计量
- 文章访问数: 272
- HTML全文浏览量: 82
- PDF下载量: 263
- 被引次数: 0
