1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou Guangdong 510641, China;
2. Guangdong provincial Highway Administration Bureau, Guangzhou Guangdong 510075, China;
3. CCDI Exploration & Design Consultant CO., Ltd., Suzhou Jiangsu 215123, China
Mechanical Sensitivity Analysis of BFRP Reinforced CRCP under the Void below Concrete Slab Condition
ZHANG Li-juan1, XU Xue-jun2, MING En-nong3, HUANG Jian-wu1
1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou Guangdong 510641, China;
2. Guangdong provincial Highway Administration Bureau, Guangzhou Guangdong 510075, China;
3. CCDI Exploration & Design Consultant CO., Ltd., Suzhou Jiangsu 215123, China
摘要This study proposes a finite element model to simulate traffic loads on continuously reinforced concrete pavement (CRCP) by using basalt fiber reinforced polymer (BFRP) bars considering the void below the concrete slab and the load transfer efficiency (LTE) at the transverse cracks of the slab. Sensitivity analysis of mechanical responses and LTE at the transverse cracks of the BFRP-reinforced CRCP slab under the void below concrete slab condition is conducted using the following parameters: slab thickness and elastic modulus, base elastic modulus, elastic modulus and design of BFRP bars, and foundation modulus. Results show that (1) the mechanical condition of the concrete slab can be significantly improved by increasing the thickness, not the elastic modulus, of the slab. (2) In the case of wide width of the void area below the concrete slab, the mechanical condition of the slab may be worsened by increasing the base elastic modulus. (3) The mechanical condition of the concrete slab can be slightly improved by increasing the elastic modulus of BFRP bars and the percentage of longitudinal reinforcement. (4) The maximum transverse tensile stress on top of the loading slab increases, whereas LTE at the transverse cracks significantly decreases with increasing foundation modulus; these phenomena damage the concrete slab near the transverse cracks in BFRP-reinforced CRCP.
Abstract：This study proposes a finite element model to simulate traffic loads on continuously reinforced concrete pavement (CRCP) by using basalt fiber reinforced polymer (BFRP) bars considering the void below the concrete slab and the load transfer efficiency (LTE) at the transverse cracks of the slab. Sensitivity analysis of mechanical responses and LTE at the transverse cracks of the BFRP-reinforced CRCP slab under the void below concrete slab condition is conducted using the following parameters: slab thickness and elastic modulus, base elastic modulus, elastic modulus and design of BFRP bars, and foundation modulus. Results show that (1) the mechanical condition of the concrete slab can be significantly improved by increasing the thickness, not the elastic modulus, of the slab. (2) In the case of wide width of the void area below the concrete slab, the mechanical condition of the slab may be worsened by increasing the base elastic modulus. (3) The mechanical condition of the concrete slab can be slightly improved by increasing the elastic modulus of BFRP bars and the percentage of longitudinal reinforcement. (4) The maximum transverse tensile stress on top of the loading slab increases, whereas LTE at the transverse cracks significantly decreases with increasing foundation modulus; these phenomena damage the concrete slab near the transverse cracks in BFRP-reinforced CRCP.
基金资助:Supported by the Transportation Science and Technology Project (Guangdong Province of No.2013-02-015); the Science and Technology Project from the Administration Bureau for Highway of Guangdong Province (No.2013-5)
通讯作者:
ZHANG Li-juan
E-mail: tczljuan@scut.edu.cn
引用本文:
张丽娟, 许薛军, 明恩农, 黄建武. 板底脱空下BFRP筋连续配筋混凝土路面力学敏感性分析[J]. Journal of Highway and Transportation Research and Development, 2017, 11(2): 1-8.
ZHANG Li-juan, XU Xue-jun, MING En-nong, HUANG Jian-wu. Mechanical Sensitivity Analysis of BFRP Reinforced CRCP under the Void below Concrete Slab Condition. Journal of Highway and Transportation Research and Development, 2017, 11(2): 1-8.
[1] GE Qian-ru, HUANG Zhi-yi, WANG Jin-chang, et al. Reinforcement Design of Composite Pavement Continuously Reinforced with Basalt Fiber Reinforced Plastics Bars[J]. Journal of Zhejiang University:Engineering Science Edition, 2015, 49(1):186-192. (in Chinese).
[2] GU Xing-yu, DONG Qiao. Laboratory Test and Numerical Simulation of Bond Performance between Basalt Fiber Reinforced Polymer Rebar and Concrete[J]. Journal of Testing and Evaluation, 2012, 40(7):1-8.
[3] ZOLLINGER D G, BUCH N, XIN D, et al. Performance of CRCP Volume 6:CRCP Design, Construction, and Performance, HWA-RD-97-151[R]. Washington, D.C.:Department of Transportation, 1998.
[4] ZOLLINGER D G, BARENBERG E J. Continuously Reinforced Pavements:Punchouts and Other Distresses and Implications for Design, Project IHR-518[R]. Springfield, Illinois:University of Illinois at Urbana-Champaign, 1990.
[5] SELEZNEVA O, RAO C, DARTER M I, et al. Development of a Mechanistic-Empirical Structural Design Procedure for Continuously Reinforced Concrete Pavements[J]. Transportation Research Record, 2004, 1896:46-56.
[6] NCHRP. Guide for the Design of Pavement Structure of New and Rehabilitated Pavement Structures. Appendix LL:Punchouts in Continuously Reinforced Concrete Pavements, NCHRP 1-37A[R]. Washington, D. C.:National Cooperative Highway Research Program, 2003.
[7] FAN Liu-jun, LIU Jie. Punchout Distress of Continuously Reinforced Concrete Pavement and Its Prevention Measures[J]. Journal of China & Foreign Highway, 2014(6):75-78. (in Chinese)
[8] JOHNSTON D P, SURDAHL R W. Effects of Design and Material Modifications on Early Cracking of Continuously Reinforced Concrete Pavements in South Dakota[J].Transportation Research Record, 2008, 2081:103-109.
[9] JU Suo-ji, LI Yu-zhi. Load Stress Analysis of CRCP with Weak Support[J]. Journal of Highway and Transportation Research and Development, 2005, 22(5):34-37. (in Chinese)
[10] CHEN Xiao-bing. Structural Design Method of CRCP Based on Formation Rule of Cracking[D]. Nanjing:Southeast University, 2013. (in Chinese)
[11] ZHANG Hong-liang, ZUO Zhi-wu. Continuously Reinforced Concrete Pavements[M]. Beijing:China Communications Press, 2011. (in Chinese)
[12] HUANG Y H. Pavement Analysis and Design[M]. 2nd. ed. London:Pearson Prentice Hall, 2003.
[13] ABAQUS Inc. Abaqus 6.12 Analysis User's Manual[M]. Providence, US:ABAQUS Inc., 2011.
[1]
李宁, 马骉, 李瑞, 司伟. 基于PUMA的单级和多级加载模式下级配碎石性能研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 1-12.
[2]
许海亮, 任合欢, 何兆才, 何炼. 车路耦合条件下沥青混凝土路面变形特性时域分析[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 13-19.
[3]
杜健欢, 艾长发, 黄超, 郭玉金, 蒋运兵. 界面水对沥青复合小梁疲劳性能的影响试验[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 1-7.
[4]
姚国强, 言志信, 龙哲, 翟聚云. 基于岩质边坡相似材料的锚固界面剪应力分布规律研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 8-15.
[5]
刘泽, 何矾, 黄天棋, 蒋梅东. 车辆荷载在挡土墙上引起的附加土压力研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 16-23.
[6]
邱欣, 徐静娴, 陶钰强, 杨青. 路面结冰条件判别标准及SVM预测分析研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 1-9.
[7]
高伟, 崔巍, 李秀凤. 半刚性基层表面抗冲刷性能试验与分析[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 10-17.
[8]
张向东, 任昆. 煤渣改良土路基的动弹性模量及临界动应力试验研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 25-32.
[9]
刘栋, 尚小亮, 杨西海. 垃圾焚烧炉渣中可溶盐对水泥稳定材料性能的影响[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 18-24.
[10]
李龙海, 杨茹. 多次加铺的复合道面疲劳寿命分析[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 7-15.
[11]
蔡旭, 李翔, 吴旷怀, 黄文柯. 基于旋转压实的水泥稳定再生集料设计方法研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 1-6.
[12]
李金路, 冯子强, 吴佳杰, 魏姗姗, 葛智. 环境及疲劳荷载作用下碳纳米管水泥基复合材料压敏性能研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 16-21.
[13]
田小革, 韩海峰, 李新伟, 吴栋, 魏东. 半刚性路面中双层半刚性基层的倒装效应[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 22-27.
[14]
邢磊, 雷柏龄, 陈忠达, 戴学臻. 彩色沥青路面胶凝材料的制备技术[J]. Journal of Highway and Transportation Research and Development, 2018, 12(2): 1-6.
[15]
方薇, 陈向阳, 杨果林. 带齿格栅加筋挡墙工作机理的数值模拟研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(2): 7-13.
2017, Vol. 11 
