压实能量与室内振动压实机械参数关系研究
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摘要
室内振动压实机械参数对道路材料压实效果有直接影响,开展压实能量与室内振动压实机械参数关系研究对制定合理压实方法有重要意义。文章对水泥稳定碎石进行了室内压实试验,结合机械—土弹跳模型计算振动压实能量,阐明了机械参数变化过程中振动压实能量和激振力的变化规律,分析了压实密度与压实机能量的关系以及机械参数对压实能量的影响。结果表明:振动能量可以较好的反映压实能力,振动压实能量宜大于30 J;压实能量随振动频率和激振力的增大而先增大后减小,偏心角增大导致最大振动压实能量降低而最佳激振力不变,偏心块夹角应小于90°,当偏心块夹角增大时,需提高振动频率和减少配重,振动频率范围为24~32 Hz;压实机械的激振力随频率的提高而增大,激振力5000~7000 N为最佳范围。
Mechanical parameters have direct influence on the road material compaction effect,confirming the influence of mechanical parameters is the basis of reasonable indoor vibration compaction method. The indoor vibrate compaction was carried out,and the vibrate compaction energy was calculated based on bounce model,the relation between compaction effect and compaction energy was analyzed,and the relation between compaction energy and mechanical parameter was researched in further. The results show that vibration energy can reflect the compaction effect better,and that vibration compaction energy should be greater than 30 J. With the increase of vibration frequency and vibration force,the maximum compaction energy increases first and then decreases,under some cases it may increase again. The maximum vibration compaction energy will decease while the best exciting force will remain with the increase of eccentric block angle. The eccentric block angle should be less than 90°,and if the eccentric block angle becomes lager,the frequency should be higher and the balancing weight should be reduced. The normal frequency is 24 Hz ~ 32 Hz. The exciting force increases with the increase of vibrate frequency,and 5000 ~ 7000 N is reasonable exciting force range.
Mechanical parameters have direct influence on the road material compaction effect,confirming the influence of mechanical parameters is the basis of reasonable indoor vibration compaction method. The indoor vibrate compaction was carried out,and the vibrate compaction energy was calculated based on bounce model,the relation between compaction effect and compaction energy was analyzed,and the relation between compaction energy and mechanical parameter was researched in further. The results show that vibration energy can reflect the compaction effect better,and that vibration compaction energy should be greater than 30 J. With the increase of vibration frequency and vibration force,the maximum compaction energy increases first and then decreases,under some cases it may increase again. The maximum vibration compaction energy will decease while the best exciting force will remain with the increase of eccentric block angle. The eccentric block angle should be less than 90°,and if the eccentric block angle becomes lager,the frequency should be higher and the balancing weight should be reduced. The normal frequency is 24 Hz ~ 32 Hz. The exciting force increases with the increase of vibrate frequency,and 5000 ~ 7000 N is reasonable exciting force range.
引文
[1]胡力群.半刚性基层材料结构类型与组成设计研究[D].西安:长安大学,2004.
[2]滕云楠.若干振动机械系统的振动摩擦动力学特性及实验研究[D].沈阳:东北大学,2011.
[3]陈忠良.西德劳森豪森公司选择振动压实机械振动参数的有关力学原理和计算方法[J].建筑机械,1982(6):17-23.
[4]王天林,蒋应军.沥青混合料试件振动成型方法[J].武汉理工大学学报(交通科学与工程版),2014,38(3):558-561.
[5]张浩,刘江,胡江洋,等.陕北地区毛乌素沙漠公路风积沙工程特性研究[J].合肥工业大学学报(自然科学版),2015,38(8):1103-1108.
[6]王龙,解晓光.振动压实能力与道路基层材料可压实性评价[J].同济大学学报(自然科学版),2013,41(2):203-207.
[7]洪亮,刘涛,杨三强.水泥稳定砾石骨料振动与击实成型对比试验[J].重庆交通大学学报(自然科学版),2014,33(6),63-67.
[8]代红娟,付玉涛,张燕.基于振动台法的弱盐渍土振动压实研究[J].中外公路,2014,34(2):64-69.
[9]魏文澜.振动压路机振动轮振幅的探讨[D].西安:长安大学,2013.
[10]曹周阳.秦巴山区变质软岩路堤填料路用性能及振动压实工艺研究[D].西安:长安大学,2013.
[11]周浩.水泥稳定碎石材料振动压实效应研究[D].西安:长安大学,2013.
[12]龚创先.振动压路机压实性能研究与优化[D].湘潭:湘潭大学,2013.
[13]李炜光,申爱琴,张玉斌.二灰砂砾振动压实参数[J].长安大学学报(自然科学版),2007,27(4):10-13.
[14]卢艳坤.室内振动压实成型机的动态测试与动力学分析[J].公路交通科技(应用技术版),2008(S1):346-349.
[15]胡力群,沙爱民.室内振动压实机结构及利用振动法确定水泥稳定碎石压实标准应注意的问题[J].公路,2010(6):132-135.
[2]滕云楠.若干振动机械系统的振动摩擦动力学特性及实验研究[D].沈阳:东北大学,2011.
[3]陈忠良.西德劳森豪森公司选择振动压实机械振动参数的有关力学原理和计算方法[J].建筑机械,1982(6):17-23.
[4]王天林,蒋应军.沥青混合料试件振动成型方法[J].武汉理工大学学报(交通科学与工程版),2014,38(3):558-561.
[5]张浩,刘江,胡江洋,等.陕北地区毛乌素沙漠公路风积沙工程特性研究[J].合肥工业大学学报(自然科学版),2015,38(8):1103-1108.
[6]王龙,解晓光.振动压实能力与道路基层材料可压实性评价[J].同济大学学报(自然科学版),2013,41(2):203-207.
[7]洪亮,刘涛,杨三强.水泥稳定砾石骨料振动与击实成型对比试验[J].重庆交通大学学报(自然科学版),2014,33(6),63-67.
[8]代红娟,付玉涛,张燕.基于振动台法的弱盐渍土振动压实研究[J].中外公路,2014,34(2):64-69.
[9]魏文澜.振动压路机振动轮振幅的探讨[D].西安:长安大学,2013.
[10]曹周阳.秦巴山区变质软岩路堤填料路用性能及振动压实工艺研究[D].西安:长安大学,2013.
[11]周浩.水泥稳定碎石材料振动压实效应研究[D].西安:长安大学,2013.
[12]龚创先.振动压路机压实性能研究与优化[D].湘潭:湘潭大学,2013.
[13]李炜光,申爱琴,张玉斌.二灰砂砾振动压实参数[J].长安大学学报(自然科学版),2007,27(4):10-13.
[14]卢艳坤.室内振动压实成型机的动态测试与动力学分析[J].公路交通科技(应用技术版),2008(S1):346-349.
[15]胡力群,沙爱民.室内振动压实机结构及利用振动法确定水泥稳定碎石压实标准应注意的问题[J].公路,2010(6):132-135.