台背回填高速液压夯实机补强路基质量控制标准研究
|
摘要
桥台涵背等路基构造物附近作业面小,不利于大吨位压路机快速压实施工,黄土地区这一问题更加突出。对高速液压夯实机用于台背黄土路基补强夯实中施工参数的确定进行现场试验研究。文章基于波体特性的夯击能传递原理,研究了使用高速液压夯实机对台背回填进行补强夯实作业的最佳施工参数。结果表明:影响高速液压夯实机补强路基效果的主要因素为夯击档位、夯击次数和夯点间距。高速液压夯实机在一般黄土填筑路堤补强夯实时,夯击档位控制在Ⅲ档最佳,夯击次数应控制在12次～18次,夯点中心间距应不超过1.5m。提出了台背回填高速液压夯实机补强路基质量控制标准,可用于指导黄土地区台背路基压实施工质量控制。
The small working area near subgrade structures such as abutment and culvert back is not conducive to the rapid compaction of large-tonnage roller, and this problem is more prominent in Loess area.Field test study was carried out on the determination of the construction parameters in the reinforcement and compaction of the high-pressure hydraulic compactor for the loess roadbedof theabutment back.Based on the principle of slamming energy transfer of wave body characteristics, the paper studies the optimal construction parameters for the reinforcement and compaction operation of backfilling with a high-speed hydraulic tamping machine.The results show that the main factors affecting the effect of high-speed hydraulic compaction machine to strengthen the roadbed are the sniper gear position, the number of slamming times and the distance between the smash points.When the highspeed hydraulic rammer is used to reinforce embankment in general loess, the ramming gear is best in grade III, the number of ramming times should be controlled from 12 to 18, and the center distance of ramming points should not exceed 1.5 m.The quality control standard for the subgrade backfill high-speed hydraulic compaction machine is proposed, which can be used to guide the quality control of the base back pressure in the loess area.
The small working area near subgrade structures such as abutment and culvert back is not conducive to the rapid compaction of large-tonnage roller, and this problem is more prominent in Loess area.Field test study was carried out on the determination of the construction parameters in the reinforcement and compaction of the high-pressure hydraulic compactor for the loess roadbedof theabutment back.Based on the principle of slamming energy transfer of wave body characteristics, the paper studies the optimal construction parameters for the reinforcement and compaction operation of backfilling with a high-speed hydraulic tamping machine.The results show that the main factors affecting the effect of high-speed hydraulic compaction machine to strengthen the roadbed are the sniper gear position, the number of slamming times and the distance between the smash points.When the highspeed hydraulic rammer is used to reinforce embankment in general loess, the ramming gear is best in grade III, the number of ramming times should be controlled from 12 to 18, and the center distance of ramming points should not exceed 1.5 m.The quality control standard for the subgrade backfill high-speed hydraulic compaction machine is proposed, which can be used to guide the quality control of the base back pressure in the loess area.
引文
[1]苗学云,刘贺业,屈耀辉,等.液压夯实工艺在涵洞台背回填中的应用研究[J].公路,2017,62(10):30-35.
[2]王剑英,王选仓,丁龙亭,等.黄土路基大吨位压实参数研究[J].公路交通科技,2018,35(12):48-54+62.
[3]曹斌,刘岩.高速液压夯实机在高速公路路基填筑中的应用[J].公路,2016,61(11):71-75.
[4]王剑英,王选仓,丁龙亭,等.基于超限学习机的黄土高路堤预拱超填研究[J].中国公路学报,2018,31(11):31-41.
[5]张焕新,方建勤,黄水泉.液压夯实技术补强高速公路台背路基施工工艺试验研究[J].公路,2010,(06):140-143.
[6]温高峰.高等级公路桥头台背路基回填处理研究[J].公路交通科技,2004,(06):25-27.
[7]黄写勤,高志伟,王选仓.高速公路拓宽路基差异沉降处治措施[J].筑路机械与施工机械化,2013,30(08):71-75.
[8]宋扬,魏连雨,冯雷.高填方土石混填路基夯实及检测技术研究[J].河北工业大学学报,2014,43(05):88-92.
[9]曹斌,李生汀,吴立坚,等.高速公路新旧路基结合部高速液压夯补强技术探讨[J].公路交通科技:应用技术版,2017,(10):66-67.
[10]庄仲欣.高速液压夯实技术在高速铁路路基工程中的应用研究[J].路基工程,2018,(03).
[11]梁倩,陈治,王永威.台背高填路基对墩桩影响的数值仿真模拟分析[J].内蒙古公路与运输,2017,(03):34-38.
[12]司癸卯,赵建成,邵现田,等.桥台涵背特殊位置路基快速液压夯实技术[J].筑路机械与施工机械化,2017,(09).
[13]崔丽娅,尹志伟.非软弱地基路基沉降变形的分析研究[J].内蒙古公路与运输,2012,(03):33-34.
[14]马宗源,廖红建,徐清清,等.填石路基动力夯实离散元数值分析[J].地下空间与工程学报,2016,12(03):705-711.
[15]钱家欢,殷宗仁.土工原理与计算(第1版)[M].北京:中国水利水电出版社,1996.
[2]王剑英,王选仓,丁龙亭,等.黄土路基大吨位压实参数研究[J].公路交通科技,2018,35(12):48-54+62.
[3]曹斌,刘岩.高速液压夯实机在高速公路路基填筑中的应用[J].公路,2016,61(11):71-75.
[4]王剑英,王选仓,丁龙亭,等.基于超限学习机的黄土高路堤预拱超填研究[J].中国公路学报,2018,31(11):31-41.
[5]张焕新,方建勤,黄水泉.液压夯实技术补强高速公路台背路基施工工艺试验研究[J].公路,2010,(06):140-143.
[6]温高峰.高等级公路桥头台背路基回填处理研究[J].公路交通科技,2004,(06):25-27.
[7]黄写勤,高志伟,王选仓.高速公路拓宽路基差异沉降处治措施[J].筑路机械与施工机械化,2013,30(08):71-75.
[8]宋扬,魏连雨,冯雷.高填方土石混填路基夯实及检测技术研究[J].河北工业大学学报,2014,43(05):88-92.
[9]曹斌,李生汀,吴立坚,等.高速公路新旧路基结合部高速液压夯补强技术探讨[J].公路交通科技:应用技术版,2017,(10):66-67.
[10]庄仲欣.高速液压夯实技术在高速铁路路基工程中的应用研究[J].路基工程,2018,(03).
[11]梁倩,陈治,王永威.台背高填路基对墩桩影响的数值仿真模拟分析[J].内蒙古公路与运输,2017,(03):34-38.
[12]司癸卯,赵建成,邵现田,等.桥台涵背特殊位置路基快速液压夯实技术[J].筑路机械与施工机械化,2017,(09).
[13]崔丽娅,尹志伟.非软弱地基路基沉降变形的分析研究[J].内蒙古公路与运输,2012,(03):33-34.
[14]马宗源,廖红建,徐清清,等.填石路基动力夯实离散元数值分析[J].地下空间与工程学报,2016,12(03):705-711.
[15]钱家欢,殷宗仁.土工原理与计算(第1版)[M].北京:中国水利水电出版社,1996.