水泥混凝土路面MHB法碎石化环境影响分析与评价
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摘要
为了掌握既有水泥混凝土路面MHB法碎石化改造时对周围环境的振动特点与影响范围,采用高精度震动测试仪对水泥混凝土路面MHB法碎石化时的施工振动特点、影响范围等进行了现场施工监测。对试验段现场振动测试的振动加速度时程曲线、加速度衰减特性曲线和加速度峰值随振中距衰减曲线的变化进行了对比、分析。表明采用MHB法对旧混凝土路面碎石化施工时所产生的机械振动加速度衰减速度很快,且具有冲击和瞬态振动的特点,对以填方为主在路堤边坡和挖方路堑边坡的安全影响范围与岩土体性质密切相关。通过试验建立了填方路基和挖方边坡的水平加速度和垂直加速度与MHB法碎石化振中距间的负指数和对数关系式,确定了混凝土路面MHB法碎石化振动对填方路基下边坡和挖方路堑上边坡上建筑物影响范围和最小安全距离,分别为5.5 m和25 m。
In order to analyze the characteristics and influence area of vibration during rubblization of old cement pavement by Multiple Head Breaker(MHB),the acceleration course,typical attenuation curve of vibrational acceleration and attenuation curve of accelerational peak value along with attenuation distance were compared and analyzed on the basis of vibration data acquired using seismograph.It is shown that(1)the vibrational acceleration attenuates fast and takes on some traits of concussion and instantaneous vibration;(2)the safe influence area of MHB is associated with characteristic of slope soil.The relationship between vibrancy distance and vertical/horizontal vibration acceleration such as negative exponential and logarithm were established.The influence area and safe distance of fill slop and cut slop are 5.5 m and 25 m respectively.
In order to analyze the characteristics and influence area of vibration during rubblization of old cement pavement by Multiple Head Breaker(MHB),the acceleration course,typical attenuation curve of vibrational acceleration and attenuation curve of accelerational peak value along with attenuation distance were compared and analyzed on the basis of vibration data acquired using seismograph.It is shown that(1)the vibrational acceleration attenuates fast and takes on some traits of concussion and instantaneous vibration;(2)the safe influence area of MHB is associated with characteristic of slope soil.The relationship between vibrancy distance and vertical/horizontal vibration acceleration such as negative exponential and logarithm were established.The influence area and safe distance of fill slop and cut slop are 5.5 m and 25 m respectively.
引文
[1]THOMPSON M.Hot-mix Asphalt Overlay Design Concepts forRubblized Portland Cement Concrete Pavements[J].Transpo-rtation Research Record,1999,1 684:147-155.
[2]BEMANIAN S,SEBAALY P.Cost-effective Rehabilitation ofPortland Cement Concrete Pavement in Nevada[R].Transpo-rtation Research Record,1999,1 684:156-164.
[3]KSAIBATI K,MILEY W,ARMAGHANI J.Rubblization ofConcrete Pavements[R].Transportation Research Record1999,1 684:165-171.
[4]Galal K A,Coree B J,Haddock E,et al.Structural Adequa-cy of Rubblized Portland Cement Concrete Pavement[R].Transportation Research Record,1999,1 684:172-177.
[5]李昶,张玉宏,张建.冲击压实与MHB类设备对水泥混凝土路面破碎效果的对比[J].公路交通科技,2004,21(11):17-19.LI Chang,ZHANG Yu-hong,ZHANG Jian.Comparison of Land-pac and MHB Used for Breaking of Cement Pavement[J].Jou-rnal of Highway and Transportation Research and Development,2004,21(11):17-19.
[6]侯利国,洪秀敏,马建青,等.碎石化技术在旧水泥路面改造加铺沥青路面中的应用[J].中外公路,2005,25(5):41-44.HOU Li-guo,HONG Xiu-min,MA Jian-qing,et al.Appl-ication of Rubblization of Old PCC for Asphalt Overlay[J].China and Foreign Countries Highway,2005,25(5):41-44.
[7]王松根,张玉宏,曹茂坤,等.水泥混凝土路面碎石化改造技术应用与探讨[J].华东公路,2004(3):7-9.WANG Song-gen,ZHANG Yu-hong,CAO Mao-kun,et al.Application and Discussion of Rubblizing Cement Pavement[J].East China Highway,2004,(3):7-9.
[8]闫宝杰,陈荣生.城市水泥混凝土路面改造工破裂稳固技术的应用[J].公路交通科技,2005,22(12):20-34.YAN Bao-jie,CHEN Rong-sheng.Application of Breaking andStabilizing Technology in Concrete Pavement Reconstruction inUrban Area[J].Journal of Highway and Transportation Re-search and Development,2005,22(12):20-34.
[9]熊帆,黄晓明,贾栋,等.碎石化技术在水泥混凝土老路改建中的应用[J].交通科技,2004(6):52-54.XIONG Fan,HUANG Xiao-ming,JIA Dong,et al.Rubbl-ization of Old PCC Slabs[J].Transportation Science&Tech-nology,2004(6):52-54.
[10]张玉宏,王松根,李昶.国外水泥混凝土路面碎石化技术简介[J].公路,2003(9):94-97.ZHANG Yu-hong,WANG Song-gen,LI Chang.Introductionof Foreign Technics for Crushing Cement Concrete Pavement[J].Highway,2003(9):94-97.
[11]GB50011-2001建筑抗震设计规范[S].GB50011-2001,Code for Seismic Design of Buildings[S].
[12]JTJ004-89,公路工程抗震设计规范[S].JTJ004-89,Code for Seismic Design of Highway Engineering[S].
[13]GB/T17742-1999,中国地震烈度表[S].GB/T17742-1999 Earthquake Intensity Table of China[S].
[2]BEMANIAN S,SEBAALY P.Cost-effective Rehabilitation ofPortland Cement Concrete Pavement in Nevada[R].Transpo-rtation Research Record,1999,1 684:156-164.
[3]KSAIBATI K,MILEY W,ARMAGHANI J.Rubblization ofConcrete Pavements[R].Transportation Research Record1999,1 684:165-171.
[4]Galal K A,Coree B J,Haddock E,et al.Structural Adequa-cy of Rubblized Portland Cement Concrete Pavement[R].Transportation Research Record,1999,1 684:172-177.
[5]李昶,张玉宏,张建.冲击压实与MHB类设备对水泥混凝土路面破碎效果的对比[J].公路交通科技,2004,21(11):17-19.LI Chang,ZHANG Yu-hong,ZHANG Jian.Comparison of Land-pac and MHB Used for Breaking of Cement Pavement[J].Jou-rnal of Highway and Transportation Research and Development,2004,21(11):17-19.
[6]侯利国,洪秀敏,马建青,等.碎石化技术在旧水泥路面改造加铺沥青路面中的应用[J].中外公路,2005,25(5):41-44.HOU Li-guo,HONG Xiu-min,MA Jian-qing,et al.Appl-ication of Rubblization of Old PCC for Asphalt Overlay[J].China and Foreign Countries Highway,2005,25(5):41-44.
[7]王松根,张玉宏,曹茂坤,等.水泥混凝土路面碎石化改造技术应用与探讨[J].华东公路,2004(3):7-9.WANG Song-gen,ZHANG Yu-hong,CAO Mao-kun,et al.Application and Discussion of Rubblizing Cement Pavement[J].East China Highway,2004,(3):7-9.
[8]闫宝杰,陈荣生.城市水泥混凝土路面改造工破裂稳固技术的应用[J].公路交通科技,2005,22(12):20-34.YAN Bao-jie,CHEN Rong-sheng.Application of Breaking andStabilizing Technology in Concrete Pavement Reconstruction inUrban Area[J].Journal of Highway and Transportation Re-search and Development,2005,22(12):20-34.
[9]熊帆,黄晓明,贾栋,等.碎石化技术在水泥混凝土老路改建中的应用[J].交通科技,2004(6):52-54.XIONG Fan,HUANG Xiao-ming,JIA Dong,et al.Rubbl-ization of Old PCC Slabs[J].Transportation Science&Tech-nology,2004(6):52-54.
[10]张玉宏,王松根,李昶.国外水泥混凝土路面碎石化技术简介[J].公路,2003(9):94-97.ZHANG Yu-hong,WANG Song-gen,LI Chang.Introductionof Foreign Technics for Crushing Cement Concrete Pavement[J].Highway,2003(9):94-97.
[11]GB50011-2001建筑抗震设计规范[S].GB50011-2001,Code for Seismic Design of Buildings[S].
[12]JTJ004-89,公路工程抗震设计规范[S].JTJ004-89,Code for Seismic Design of Highway Engineering[S].
[13]GB/T17742-1999,中国地震烈度表[S].GB/T17742-1999 Earthquake Intensity Table of China[S].
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