Ansys simulation analysis of cement concrete pavement bearing capacity under extra heavy load

doi:10.3969/j.issn.1000-1565.2017.06.001

Abstract

Abstract: The finite element model of small deflection elastic thin plate was used to carry out the numerical simulation analysis of the bearing capacity by means of dynamic detection, automatic dropping hammer and other testing methods.The results show that the maximum deformation of cement concrete pavement on the wheel is between 0.375 4—0.657 9 mm at the same special heavy load, different thickness and different strength grades. The maximum deformation of the road surface at the wheel will be significantly reduced when the thickness of concrete slab is 10—25 cm and the strength is C30—C50. Thick concrete slab of C40 and 25 cm is used according to the life of the road design cycle. The results can provide theoretical support for the design of cement concrete pavement under extra heavy loads.

Key words: heavy load, cement concrete pavement, ultimate bearing capacity, finite element simulation analysis

CLC Number:

U419.91

YANG Sanqiang,WU Wenxiu,LIU Na,FAN Xiaoyu. Ansys simulation analysis of cement concrete pavement bearing capacity under extra heavy load[J]. Journal of Hebei University (Natural Science Edition), 2017, 37(6): 561-566.

References

[1] 陈亚莉.基于ANSYS的水泥路面弯沉影响因素有限元分析[J].中外公路,2009,29(02):87-89.DOI:10.3969/j.issn.1617-2579.2009.02.002. CHEN Y L.Finite element analysis of influencing factors of cement pavement deflection based on ANSYS[J].Journal of China & Foreign Highway,2009,29(02):87-89.DOI:10.3969/j.issn.1617-2579.2009.02.002.
[2] 付欣.动荷载作用下水泥混凝土路面的有限元分析[J].华东公路,2010(6):58-62. FU X.Finite element analysis of cement concrete pavement under dynamic load[J].East China Highway,2010(6):58-62.
[3] 杨三强,刘娜,张帅,杜二霞.荒漠地区耐久性沥青路面结构设计指标与路面结构力学分析[J].河北大学学报(自然科学版),2016,36(6):574-582.DOI:10.3969/j.issn.1000-1565.2016.06.003. YANG S Q,LIU N,ZHANG S,et al.Ansys of design index and structural mechanics of durable asphalt pavement in desert areas[J].Journal of Hebei University( Natural Science Edition),2016,36(6): 574-582.DOI:10.3969/j.issn.1000-1565.2016.06.003.
[4] 杨三强,刘娜,李志农,等.荷载、速率效应对路基受力变形的影响研究[J].中外公路,2016,4(36):47-50.DOI:10.14048/j.issn.1671-2579.2016.04.010. YANG S Q,LIU N,LI Z N,et al.Effect of load and velocity on deformation of subgrade subjected to force[J].Journal of China & Foreign Highway,2016,4(36):47-50.DOI:10.14048/j.issn.1671-2579.2016.04.010.
[5] 李镇.重载交通水泥混凝土路面结构设计与施工关键技术研究[D].西安:长安大学,2012.DOI: 10.7666/d.D235562. LI Z.Study on structure design and construction of key technology of Heavy Traffic cement concrete pavement[D].Xi’an: Chang’an University,2012.DOI: 10.7666/d.D235562.
[6] 许志鸿,邓云纲,吴美发.重载耐久性沥青路面结构力学分析[J].中外公路,2007,27(1):40-44.DOI:10.3969/j.issn.1671-2579.2007.01.011. XU Z H,DENG Y G,WU M F.Structural mechanics analysis of heavy-duty durability asphalt Pavement[J].Journal of China & Foreign Highway,2007,27(1):40-44.DOI:10.3969/j.issn.1671-2579.2007.01.011.
[7] 王海龙.道路刚度识别理论及仿真研究[D].南京:南京理工大学,2014. WANG H L.Study on the theory and simulation of road stiffness identification [D].Nanjing: Nanjing University of Science and Technology,2014.
[8] YU W,ZHANG Y N,WANG X C,et al.Analysis on bearing capacity of heavy-load cement concrete pavement[J].Applied Mechanics & Materials,2014,505-506(1):200-203.DOI:10.4028/www.scientific.net/amm.505-506.200.