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| 水泥混凝土路面板角脱空状态下最不利荷位转移规律 | |
| 引用本文： | 曾小军,曾胜,许佳,龚先兵.水泥混凝土路面板角脱空状态下最不利荷位转移规律[J].重庆交通大学学报(自然科学版),2009,28(5):865-869. |
| 作者姓名： | 曾小军 曾胜 许佳 龚先兵 |
| 作者单位： | 1. 广东交通集团,检测中心,广东广州,510420 2. 长沙理工大学,交通运输工程学院,湖南,长沙410076 3. 湖南省高速公路管理局,湖南,长沙410001 |
| 基金项目： | 湖南省自然科学基金项目 |
| 摘 要： | 通过计算板角不同脱空尺寸时纵边中部与板角荷载作用下受荷点的荷载应力,分析脱空混凝土板的最不利荷位转移规律,进行水泥混凝土路面板底脱空对面板疲劳使用寿命的影响研究。研究结果表明:路面板角脱空后,随着脱空区域的增大,最大应力位置由板纵边中部逐渐向板角区域转移,当脱空尺寸Lv>0.7 m,板角脱空区与未脱空区边界(即三角形脱空区域的斜边)成为面板受力的最不利荷位,并建议脱空尺寸超过0.4 m的路面板及时进行加固处治,以防止板块断裂。 |
| 关 键 词： | 道路工程 水泥混凝土路面 脱空 最不利荷位 转移规律 |
Metastatic Pattern of the Worst Loading Position at Slab Corner of Cement Concrete Pavement under Voidage |
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| ZENG Xiao-jun,ZENG Sheng,XU Jia,GONG Xian-bing.Metastatic Pattern of the Worst Loading Position at Slab Corner of Cement Concrete Pavement under Voidage[J].Journal of Chongqing Jiaotong University,2009,28(5):865-869. | |
| Authors: | ZENG Xiao-jun ZENG Sheng XU Jia GONG Xian-bing |
| Institution: | ZENG Xiao-jun1,ZENG Sheng2,XU Jia2,GONG Xian-bing3(1.Test Center of Guangdong Province Communication Group,Guangdong Guangzhou 5l0420,China,2.School of Traffic & Transportation Engineering,Changsha University of Science & Technology,Hunan Changsha 410076,3.Hunan Expressway Administration Bureau,Hunan Changsha 410001,China) |
| Abstract: | Based on the calculation of the loading stresses at both the middle of longitudinal joint and the slab corner when the void size is varied,the metastatic pattern of the worst loading position of slab under voidage is analyzed.And the effect of voidage beneath cement concrete pavement slab on the service life of the slab is also studied.The research result shows that with the enlargement of voidage,the maximum stress position transfers from the middle at longitudinal joint to the slab corner.The boundary of ... |
| Keywords: | pavement engineering cement concrete pavement voidage worst loading position metastatic pattern |
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