随机荷载作用下刚性路面动态响应研究

PDF(1906 KB)

振动与冲击 ›› 2015, Vol. 34 ›› Issue (19) : 126-130.

论文

随机荷载作用下刚性路面动态响应研究

张献民，胡鹏

作者信息 +

Dynamic response of rigid pavement under random load#br#

ZHANG Xian-min, HU Peng

Author information +

文章历史 +

摘要

为了研究车辆随机荷载作用下刚性路面的动态响应，基于ANSYS软件，应用1/4车辆模型，得出其在路面不平度激励下的随机荷载，简化了荷载的求解，建立了路面三维有限元模型，讨论了在随机荷载作用下结构层参数对路面动位移幅值及面层层底拉应力幅值的影响规律。结果表明，面层厚度和土基模量对路面动位移幅值影响最大，当面层厚度超过30cm、土基模量超过60MPa时，继续增大以上结构层参数路面动位移幅值不再有明显减少；当土基模量小于60MPa继续减少时，要实现路面动位移幅值的不变，需要增加的面层厚度幅度逐渐变大；面层模量及厚度对面层层底拉应力幅值影响最大

Abstract

In order to study the dynamic response of rigid pavement under the vehcle random load ,a random load excited by pavement surface roughness was obtained with the application of 1/4 vehicle model using ANSYS, which simplified the solution of load. Then a 3D finite element model of pavement is established to discuss the influences of structural parameters on maximum dynamic displacement and maximum bottom tensile stress of the surface layer. The calculated results indicate, subgrade modulus and surface layer thickness have significant effects on maximum dynamic displacement, when surface layer thickness is more than 30 cm, subgrade modulus is more than 60 MPa, continue to increase the above parameters the maximum dynamic displacement does not decrease obviously； when subgrade modulus is less than 60 MPa , it needs a greatly increase of surface layer thickness to obtain a same maximum dynamic displacement caused by the reduce of subgrade modulus; For the maximum tensile stress of the surface layer, the surface layer modulus and thickness influence most.

导出引用

张献民，胡鹏. 随机荷载作用下刚性路面动态响应研究[J]. 振动与冲击, 2015, 34(19): 126-130

ZHANG Xian-min, HU Peng. Dynamic response of rigid pavement under random load#br#[J]. Journal of Vibration and Shock, 2015, 34(19): 126-130

参考文献

[1] JTGD40-2002.公路水泥混凝土路面设计规范[S].北京:人民交通出版社，2002
     JTJD40—2002.Specification of cement concretes pave-ment design for highway[S]. Beijing :China Communic-ations Press, 2002.
[2] 邓学钧. 车辆-地面结构系统动力学研究[J]. 东南大学学报,2002,32(3):474-479.
    Deng Xuejun. Dynamics of vehicle-ground pavement structure system study [J]. Journal of Southeast Universi-ty, 2002,32(3):474-479.
[3] 侯芸,郭忠印,田波等. 动荷作用下沥青路面结构的变形响应分析[J]. 中国公路学报,2002, 15 (3):6-10.
    HOU Yun, GUO Zhong-yin, TIAN Bo, et al. Dynamic deflection response of layered pavement structure subj-ected to dynamic load [J]. China Journal of Highway and Transport,2002,15 (3) : 6-10.
[4] 张文斌,王祁,马松林等. 刚性路面动态应变响应的变换域分析[J]. 交通运输工程学报,2007,7(4):48-53.
Zhang Wen-bin,Wang Qi, Ma Song-lin, et all. Transform domain analysis of rigid pavement dynamic strain response[J]. Journal of Traffic and Transportation Engin-
eerxing,2007, 7(4): 48~53.
[5] 周玉民,谈至明,刘伯莹. 1/4车-路耦合动力学模型研究[J]. 同济大学学报:自然科学版,2012,40(3):408-413
Zhou Yu-Min,Tan Zhi-ming,Liu Bo-ying.Study on the quartered vehicle-road coupling dynamics models[J].Jour-Nal of Tongji University:Nature Science,2012,40(3):408-413.
[6] Liu Xiao-yun,Shi Chun-juan,Chen Shui-jing.A theory research of asphalt pavement dynamic response under ve-hicle random stimulation[J].Applied Mechanics and mate-
rials,2012,105(1):13-19
[7] 卢正,姚海林,胡智. 基于车辆-道路结构耦合振动的不平整路面动力响应分析[J]. 岩土工程学报,2013,35(1):232-238.
Lu Zheng,Yao Lin-hai,Hu Zhi. Dynamic response anal-ysis of rough pavement under vehicle-road systemcou-pled vibration[J]. Chinese Journal of Geotechnical Engi-
neering,2013,35(1): 232-238.
[8] 苏世毅. 考虑路面平整度因素的车辆—道路耦合系统动力特性分析[D].重庆交通大学,2008.
    Su Shi-yi. Dynamic response analysis of rough paveme-nt under vehicle-road systemcoupled vibration[D]. Cho-ngqing: Chongqing University,2008.
[9] 李皓玉. 车辆与路面相互作用下路面结构动力学研究[D].北京交通大学,2011.
    LI Hao-yu. Research on dynamics of pavement structure   due to vehicle and pavement interaction [D]. Beijing:Beijing Jiaotong University,2011.
[10] 郑元勋,蔡迎春,张亚敏. 沥青混凝土路面动力特性数值模拟研究[J]. 公路,2012,3(3):84-89.
Zheng Yuan-xun,Cai yin-chun,Zhang Ya-min. The dyna-mic characteristics of asphalt concrete pavement nume-rical simulation research[J]. Highway,2012,3(3): 84-89.
[11] 李皓玉,杨绍普,李韶华. 车、路的相互作用下沥青路面动力学特性分析[J]. 振动与冲击,2009,28(4) :87-89
Li Hao-yu,Yang shao-pu,Li shao-hua. Dynamical analysis of an asphalt pavement due to vehicle-road interaction[J]. Journal of Vibration and Shock.2009,28(4),87 -89.
[12] WU C P,SHEN P A,Dynamic Analysis of concrete pavements subjected to moving loads[J].Journal of Transportation Engineering,1996,122(5):367-373.
[13] 于宝明,姚祖康. 混凝土路面临界荷位分析[J]. 中国公路学报,1989,2(1):1-10.
Yu bao-ming,Yao zu-kang.A study of critical loading posi- tion for concrete pavements[J]. China Journal of Highway and Transport,1989,2(1):1-10
[14] 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,2010,06:58-62.
Fu Xin. The finite element analysis of cement concrete pavement under dynamic load [J].EAST CHINA HIGH-WAY,2010, 06:58-62.