大厚度水稳基层双层连续摊铺塑性变形分析
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摘要
为了得到大厚度连续摊铺下基层的塑性变形规律,解决大厚度基层连续摊铺技术缺乏施工平整度控制标准的问题。采用D-P屈服准则,研究改进了增量弹性Duncan-Chang模型;利用三轴剪切试验及现场试验段检测得到未养生水稳混合料的屈服极限为220kPa,确定初始切线模量为500kPa,得到了未养生水泥稳定碎石基层施工期内的变形值预估公式;其次计算了路面最不利位置下重复荷载作用次数,并引入Wolff和Visser永久变形预估模型得到下承层施工位移预估模型;最后通过研究平整度传递规律及施工车辆对双层连续摊铺下基层扰动的影响,提出了连续摊铺平整度控制原则:连续摊铺层中、下层应按下一级层位施工标准进行平整度控制,其它层位按照传统摊铺施工标准进行控制。
In order to obtain the plastic deformation law of the base under large thickness continuous paving,and find solution to the problem of lack of relevant control standards for the construction smoothness of large thickness continuous paving technology,the incremental elastic Duncan-Chang model is studied and improved by using D-P yield criterion.The yield limit of uncured water-stable mixture is220 kPa by triaxial shear test and field test,and the initial tangent modulus is determined to be 500 kPa,from which a prediction formula for deformation value of uncured cement stabilized macadam base during construction period is obtained.Then the number of repeated loads in the most unfavorable position of the pavement is calculated,and the Wolff and Visser permanent deformation prediction model is introduced to establish the construction displacement prediction model of the lower bearing stratum.Finally,by studying the smoothness transfer law and the disturbance effect of the construction vehicles on the base stratum under the double-layer continuous paving,the smoothness control principle of the continuous paving is proposed.The smoothness of middle and lower layers of continuous paving layer should be controlled according to the construction standard of the lower layer,and that of the other layers should be controlled according to the traditional paving construction standard.
In order to obtain the plastic deformation law of the base under large thickness continuous paving,and find solution to the problem of lack of relevant control standards for the construction smoothness of large thickness continuous paving technology,the incremental elastic Duncan-Chang model is studied and improved by using D-P yield criterion.The yield limit of uncured water-stable mixture is220 kPa by triaxial shear test and field test,and the initial tangent modulus is determined to be 500 kPa,from which a prediction formula for deformation value of uncured cement stabilized macadam base during construction period is obtained.Then the number of repeated loads in the most unfavorable position of the pavement is calculated,and the Wolff and Visser permanent deformation prediction model is introduced to establish the construction displacement prediction model of the lower bearing stratum.Finally,by studying the smoothness transfer law and the disturbance effect of the construction vehicles on the base stratum under the double-layer continuous paving,the smoothness control principle of the continuous paving is proposed.The smoothness of middle and lower layers of continuous paving layer should be controlled according to the construction standard of the lower layer,and that of the other layers should be controlled according to the traditional paving construction standard.
引文
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[13]蒋应军,陈浙江,李寿伟,等.级配碎石塑性变形特性及其安定行为的数值模拟[J].同济大学学报(自然科学版),2015,43(06):872-876.JIANG Yingjun,CHEN Zhejiang,LI Shouwei,et al.Plastic deformation characteristics and numerical simulation of shakedown behavior of graded broken stone[J].Journal of Tongji University(Natural Science),2015,43(06):872-876.(in Chinese)
[14]郑春婷,蔡燕燕,戚志博,等.基于回归分析法的改进Duncan-Chang模型研究[J].武汉理工大学学报,2012,34(04):108-112.ZHENG Chunting,CAI Yanyan,QI Zhibo,et al.Use regression analysis to study the improved Duncan-Chang model[J].Journal of Wuhan University of Technology,2012,34(04):108-112.(in Chinese)
[15]王伟,卢廷浩,周干武.黏土非线性模型的改进切线模量[J].岩土工程学报,2007,29(3):458-462.WANG Wei,LU Tinghao,ZHOU Ganwu.Improved tangent modulus of nonlinear soil model[J].Chinese Journal of Geotechnical Engineering,2007,29(3):458-462.(in Chinese)
[16]Mazaheripour H,Rui F,Ye G,et al.Microstructure-based prediction of the elastic behaviour of hydrating cement pastes[J].Applied Sciences,2018,8(3):442.
[17]马建,赵祥模,贺拴海,等.路面检测技术综述[J].交通运输工程学报,2017,17(05):121-137.MA Jian,ZHAO Xiangmo,HE Shuanhai,et al.Review of pavement detection technology[J].Journal of Traffic and Transportation Engineering,2017,17(05):121-137.(in Chinese)
[2]Grossmann S,Weyrauch T,Saal S,et al.Internal electrical field distribution in double layer polymer stacks as studied by electroabsorption[J].Optical Materials,1998,9(4):236-239.
[3]李晋鹏,王伟.大厚度一次整幅摊铺水稳基层施工技术应用研究[J].公路,2016(06):56-61.LI Jingpeng,WANG Wei.Application research on construction technology of large thickness single paving water stabilized base course[J].Highway,2016(06):56-61.(in Chinese)
[4]乔志,王选仓,张志芳,等.半刚性基层双层连续摊铺层间结合状态[J].交通运输工程学报,2016,(03):28-34.QIAO Zhi,WANG Xuancang,ZHANG Zhifang,et al.Interlayer combination state of double-layer continuous paving semi-rigid base[J].Journal of Traffic And Transportation Engineering,2016(03):28-34.(in Chinese)
[5]乔志,王选仓,徐子涛,等.半刚性基层双层连续摊铺施工组织工艺研究[J].中国公路学报,2016,(03):41-47.QIAO Zhi,WANG Xuancang,XU Zitao,et al.Study on construction organization process of continuous double-layer paving semi-rigid base[J].China Journal of Highway and Transport,2016(03):28-34.(in Chinese)
[6]Liu Zh Y,Liu J Y,Wang Zh Q,et al.Compressive strength and frost heave resistance of different types of semi-rigid base materials after freeze-thaw cycles[J].Sciences in Cold and Arid Regions,2015,7(4):365-369.
[7]Herndo,VAL M A D.Guidelines for the design of semi-rigid long-life pavements[J].International Journal of Pavement Research and Technology,2016,9(2):121-1277.
[8]Wu J,Liang J,Adhikari S.Dynamic response of concrete pavement structure with asphalt isolating layer under moving loads[J].Journal of Traffic and Transportation Engineering(English Edition),2014,1(6):439-447.
[9]Hou T S,Wang W,Luo Y S,et al.Mechanical behavior of light-weight soil under consolidated drained shear condition[J].Marine Georesources&Geotechnology,2014,32(3):264-276.
[10]Li Y L,Li S Y,Ding Z F,et al.The sensitivity analysis of Duncan-Chang E-B model parameters based on the orthogonal test method[J].Journal of Hydraulic Engineering,2013,39(S2):79-85.
[11]汪智慧,陈晨.基于扰动状态理论的沈阳砾砂修正邓肯-张模型[J].沈阳建筑大学学报(自然科学版),2017,33(01):68-76.WANG Zhihui,CHEN Chen.The modified Duncan-chang model for gravelly sand in Shenyang based on the disturbed state concept[J].Journal of Shenyang Jianzhu University(Natural Science),2017,33(01):68-76.(in Chinese)
[12]沈启鹏,吴道祥,胡雪婷,等.基于应力应变曲线类型的邓肯张模型修正[J].合肥工业大学学报(自然科学版),2017,40(9):1264-1268.SHEN Qipeng,WU Daoxiang,Hu Xueting,et al.Duncan-chang model modification based on stress-strain curve type[J].Journal of Hefei University of Technology(Natural Science),2017,40(9):1264-1268.(in Chinese)
[13]蒋应军,陈浙江,李寿伟,等.级配碎石塑性变形特性及其安定行为的数值模拟[J].同济大学学报(自然科学版),2015,43(06):872-876.JIANG Yingjun,CHEN Zhejiang,LI Shouwei,et al.Plastic deformation characteristics and numerical simulation of shakedown behavior of graded broken stone[J].Journal of Tongji University(Natural Science),2015,43(06):872-876.(in Chinese)
[14]郑春婷,蔡燕燕,戚志博,等.基于回归分析法的改进Duncan-Chang模型研究[J].武汉理工大学学报,2012,34(04):108-112.ZHENG Chunting,CAI Yanyan,QI Zhibo,et al.Use regression analysis to study the improved Duncan-Chang model[J].Journal of Wuhan University of Technology,2012,34(04):108-112.(in Chinese)
[15]王伟,卢廷浩,周干武.黏土非线性模型的改进切线模量[J].岩土工程学报,2007,29(3):458-462.WANG Wei,LU Tinghao,ZHOU Ganwu.Improved tangent modulus of nonlinear soil model[J].Chinese Journal of Geotechnical Engineering,2007,29(3):458-462.(in Chinese)
[16]Mazaheripour H,Rui F,Ye G,et al.Microstructure-based prediction of the elastic behaviour of hydrating cement pastes[J].Applied Sciences,2018,8(3):442.
[17]马建,赵祥模,贺拴海,等.路面检测技术综述[J].交通运输工程学报,2017,17(05):121-137.MA Jian,ZHAO Xiangmo,HE Shuanhai,et al.Review of pavement detection technology[J].Journal of Traffic and Transportation Engineering,2017,17(05):121-137.(in Chinese)
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