[1] Chen Xiaobing, Zhao Ronglong, Tong Jinhu, Huang Xiaoming, et al. Critical load position for cavities beneath CRCP slabunder vehicle loading [J]. Journal of Southeast University (English Edition), 2016, 32 (1): 78-84. [doi:10.3969/j.issn.1003-7985.2016.01.014]
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Critical load position for cavities beneath CRCP slabunder vehicle loading(
)
车辆荷载作用下脱空连续配筋混凝土路面的临界荷位
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 32
- Issue:
- 2016 1
- Page:
- 78-84
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2016-03-20
Info
- Title:
- Critical load position for cavities beneath CRCP slabunder vehicle loading
- 车辆荷载作用下脱空连续配筋混凝土路面的临界荷位
- Author(s):
- Chen Xiaobing; Zhao Ronglong; Tong Jinhu; Huang Xiaoming; Luo Ruilin
- School of Transportation, Southeast University, Nanjing 210096, China
- Keywords:
- vehicle loading; cavity; continuously reinforced concrete pavement(CRCP); critical load position; finite element method(FEM)
- PACS:
- U416.216
- DOI:
- 10.3969/j.issn.1003-7985.2016.01.014
- Abstract:
- In order to study the critical load position that causes cavities beneath the continuously reinforced concrete pavement(CRCP)slab under vehicle loading, the elliptical load is translated into the square load based on the equivalence principle. The CRCP slab is analyzed to determine the cavity position beneath the slab under vehicle loading. The influences of cavity size on the CRCP slab’s stress and vertical displacement are investigated. The study results show that the formation of the cavity is unavoidable under traffic loading, and the cavity is located at the edge of the longitudinal crack and the slab corner. The cavity size exerts an obvious influence on the largest horizontal tensile stress and vertical displacement. The slab corner is the critical load position of the CRCP slab. The results can be used to assist the design of CRCP in avoiding cavities beneath slabs subject to vehicle loading.
- 为了研究车辆荷载作用下脱空连续配筋混凝土路面的临界荷位, 运用等效原理将椭圆形车辆荷载转化为等效的方形荷载, 分析了车辆荷载作用下连续配筋混凝土路面板板底易脱空的位置, 及脱空尺寸对连续配筋混凝土路面板应力与竖向位移的影响.研究结果表明:车辆荷载作用下连续配筋混凝土路面板板底脱空不可避免, 脱空一般位于纵缝边缘与板角位置.脱空尺寸对板的横向最大拉应力和最大竖向位移影响显著, 板角为车辆荷载作用下脱空连续配筋混凝土路面的临界荷位.分析结果为脱空的连续配筋混凝土路面的结构设计提供了理论基础.
References:
[1] Zhou W J, Choi P, Saraf S, et al. Premature distresses at transverse construction joints(TCJs)in continuously reinforced concrete pavements [J]. Construction and Building Materials, 2014, 55: 212-219. DOI:10.1016/j.conbuildmat.2014.01.042.
[2] Choi S, Ha S, Won M C. Horizontal cracking of continuously reinforced concrete pavement under environmental loadings [J]. Construction and Building Materials, 2011, 25(11): 4250-4262. DOI:10.1016/j.conbuildmat.2011.04.069.
[3] Kohler E, Roesler J. Active crack control for continuously reinforced concrete pavements[J]. Transportation Research Record, 2004, 1900: 19-29.
[4] Ren D Y, Houben L J M, Rens L. Monitoring early-age cracking of continuously reinforced concrete pavements on the E17 at Ghent(Belgium)[C]//Second International Conference on Sustainable Construction Materials: Design, Performance and Application. Wuhan, China, 2013: 30-41.
[5] Selezneva O, Rao C, Darter M, et al. Development of a mechanistic empirical structural design procedure for continuously reinforced concrete pavements[J]. Transportation Research Record, 2004, 1896: 46-56.
[6] Selezneva O, Darter M, Zollinger D, et al. Characterization of transverse cracking spatial variability: Using of LTPP data for CRCP design [J]. Transportation Research Record, 2003, 1849: 147-155.
[7] Won M. Identification of CRCP distress mechanisms and calibration of mechanistic-empirical CRCP design procedures with rigid pavement database [C]//Proceedings of Transportation Research Board 90th Annual Meeting. Washington, DC, USA, 2011: 51-59.
[8] National Cooperative Highway Research Program. Guide for mechanistic-empirical design of new and rehabilitated pavement structures[R].Chicago, USA: NCHRP 1-37A, 2004.
[9] Chen X B. Structural design method of CRCP based on characteristics of cracking [D]. Nanjing: School of Transportation, Southeast University, 2013.(in Chinese)
[10] Cao D W. Study on structure of continuously reinforced concrete pavement [D]. Xi’an: School of Highway, Chang’an University, 2001.(in Chinese)
[11] Zhao J. Theories and methods for the test and evaluation of hollow underneath rigid pavement slabs [D]. Shanghai: School of Traffic and Transportation, Tongji University, 2006.(in Chinese)
[12] Zhang Q. Study on the cement concrete pavement design considering base erosion and cavity beneath slab [D]. Xi’an: School of Highway, Chang’an University, 2009.(in Chinese)
[13] Wang Q, Han X, Yi Z J. Study on identification of cavity area under concrete pavement using transient impulse-response method [J]. Journal of Highway and Transportation Research and Development(English Edition), 2012, 6(1): 8-14. DOI:10.1061/JHTRCQ.0000083.
Memo
- Memo:
-
Biography: Chen Xiaobing(1973—), male, doctor, associate professor, xbchen@seu.edu.cn.
Foundation item: The Science Foundation of Ministry of Transport of the People’s Republic of China(No.200731822301-7).
Citation: Chen Xiaobing, Zhao Ronglong, Tong Jinhu, et al. Critical load position for cavities beneath CRCP slab under vehicle loading[J].Journal of Southeast University(English Edition), 2016, 32(1):78-84. DOI:10.3969/j.issn.1003-7985.2016.01.014.