间歇式拌和楼二次筛分生产合成级配矩阵模型及参数研究

doi:10.3969/j.issn.1674-0696.2014.06.15

摘要/Abstract

摘要： 沥青混合料生产级配具有变异性，其动态规律分析有赖于基于过程机理的计算模型。拌和楼内集料经历冷料合成-风选分离-二次筛分-热料合成4个阶段，其中两次分离结果的算法是建立生产级配模型的关键。用通过率向量描述集料级配，利用生产试验研究粉尘级配与除尘量变化规律，并以此计算热提料级配；通过二次筛分假设建立各规格热料级配算法，并用热筛统计数据分析参数取值，最后进行模型验证和应用。研究表明：试验工况下浇注式混合料的除尘量占上料总质量的7.6%~13.5%，粉尘级配与除尘量无关；上层筛网筛分效率低于下层筛网，混合料粒径越大则筛分效率越低；热料粒径越小则粉尘附着量越大；按模型计算的生产级配与2种现有方法差异不大；适用于不同生产参数的级配变化规律分析。

关键词: 道路工程, 级配模型, 合成级配, 沥青混合料, 路面

Abstract: he gradation of asphalt mixture is variable and its dynamic analysis should be based on mechanism model. Aggregate is synthesized，winnowing separated， sieved and synthesized in asphalt plant. Gradation of twice separation products has not been calculated for complexity of mechanism. The gradation was represented by pass rate vector. The dust gradation and quantity study was carried out in asphalt plants，which was used to calculate the hot material gradation in elevator. Hot aggregate gradation was modeling based on two hypothesis of vibrating screens, and its model parameter was studied and selected based on hot aggregate gradation statistics. The results show that ratio of dust and raw material is 7.6%~13.5%，which is independent of dust gradation. Screening efficiency of upper screens is higher than lower screens. The larger the aggregate size is, the lower the screening efficiency and is; the smaller the particle size is ,the much the dust is.The construction gradation obtained by matrix model has little difference with two existing methods. Matrix model is suitable for gradation analysis based on varied parameter.

Key words: road engineering, gradation model, synthetic gradation;asphalt mixture, pavement

中图分类号:

U411

刘克. 间歇式拌和楼二次筛分生产合成级配矩阵模型及参数研究[J]. 重庆交通大学学报（自然科学版）, 2014, 33(6): 68-78.

Liu Ke. Job-Mix Formula Gradation Matrix Model and Parameter Study on Asphalt Batching Plant with Vibrating Screens[J]. Journal of Chongqing Jiaotong University(Natural Science), 2014, 33(6): 68-78.

参考文献

［1］王春平.沥青混合料拌和楼控制精度及其影响研究［J］.公路,2011(6):48-51.
Wang Chunping.Research on control accuracy and factors of asphalt plant［J］.Highway,2011(6):48-51.
［2］ Hudson S B,Waller H F.Evaluation of construction control procedures:aggregate gradation variations and effects［R］// NCHRP Report.U.S.:Transportation Research Board,1969.
［3］王旭东.一种基于原材料级配变异性的矿料级配范围的确定方法:中国,201110313054.X［P］.2012-06-20.
Wang Xudong.Method for Determining Mineral Aggregate Gradation Range Based on Gradation Variability of Raw Materials:China,201110313054.X［P］.2012-06-20.
［4］沙庆林.重载交通长寿命沥青路面关键技术研究［R］.长沙:长沙理工大学,2009:76-77.
Sha Qinglin.Research on Key Technology of Heavy-Load Traffic Long-Life Asphalt Pavement［R］.Changsha:Changsha University of Science and Technology,2009:76-77.
［5］ Sivileviius H.The influence of the unload mode of asphalt concrete mixing plant hot bin on the homogeneity of screened fractions［J］.Transport,2004,19(3):141-147.
［6］ Sivileviius H,Vislaviius K.Stochastic simulation of the influence of variation of mineral material grading and dose weight on the homogeneity of hot-mix asphalt［J］.Construction and Building Materials,2008,22(9):2007-2014.
［7］ Alba F.On-line real-time measurement and control of aggregate gradation in asphalt plants［R］//Nchrp-Idea Program Project Final Report.U.S.:Transportation Research Board,2013.
［8］李振国,王玉果.沥青拌和站一级回收粉系统改造［J］.交通标准化,2010（9）:35-38.
Li Zhenguo,Wang Yuguo.Reconstruction of primary dust recovery system in asphalt mixing plant［J］.Transport Standardization,2010(9):35-38.
［9］刘继先.浅谈沥青拌和设备除尘系统与回收粉的利用［J］.公路,2002(6):54-55.
Liu Jixian.Discussion on asphalt plant dust removal system and its powder recycling［J］.Highway,2002(6):54-55.
［10］王铁庆,杨勇.间歇式沥青混合料搅拌设备振动筛筛网配置研究［J］.筑路机械与施工机械化,2005,22(3):15-17.
Wang Tieqing,Yang Yong.Research on configuration of vibrating screen cloth for batch asphalt mixing plant［J］.Road Machinery & Construction Mechanization,2005,22(3):15-17.
［11］姚运仕,宋红年,冯忠绪.双频合成振动筛试验［J］.中国公路学报,2008,21(4):122-126.
Yao Yunshi,Song Hongnian,Feng Zhongxu.Experiment on double-frequency composed vibrating screen［J］.China Journal of Highway and Transport,2008,21(4):122-126.
［12］薛昕,王民,高博,等.复合改性沥青浇筑式混凝土性能研究［J］.重庆交通大学学报:自然科学版,2010,29(3):387-390.
Xue Xin,Wang Min,Gao Bo,et al.Study on the performance of compound modified bitumen guss asphalt［J］.Journal of Chongqing Jiaotong University:Natural Science,2010,29(3):387-390.
［13］范虎彪,胥志宏.环氧沥青混合料拌和楼生产级配控制技术［J］.筑路机械与施工机械化,2009,26(10):44-45.
Fan Hubiao,Xu Zhihong.Gradation control technology of epoxy asphalt mixture mixer plant production［J］.Road Machinery & Construction Mechanization,2009,26(10):44-45.
［14］张晨晨,王旭东,黄英强,等.沥青混合料生产配合比均衡设计方法［J］.中外公路,2013,33(1):253-255.
Zhang Chenchen,Wang Xudong,Huang Yingqiang,et al.Balanced design method of asphalt mixture job-mix formula［J］.Journal of China & Foreign Highway,2013,33(1):253-255.
［15］JT/T 270—2002 强制间歇式沥青混合料搅拌设备［S］.北京:人民交通出版社,2002.
JT/T 270—2002 Batch Type Asphalt Mixing Plant［S］.Beijing:China Communications Press,2002.

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