路基冲击碾压施工实施方案.doc

路基冲击碾压施工实施方案

   项目公司在20**年3月26日邀请省内公路行业的知名专家,对“高速公路的路基填土冲击碾压方法和工艺”,进行了研讨论证,根据专家研讨论证的意见,结合阿深高速公路长垣至封丘段的实际情况,对于本项目全线路基填土高度大于3米的路段进行冲击碾压,改善因路基不均沉降而带来的病害,减少路基完工后的总沉降量,提高路基的整体强度,保证高速公路的使用质量。
一、 原理
  冲击碾压是利用冲击式压路机低频大振幅冲击力作用于填土，并快速连续周期性地作用，产生强烈的冲击波向下深层传播，对路基填土进行冲击碾压，提高填土的密实度，减少工后沉降。
二、 冲击碾压原则
对于路基填土高度在3— 6米者，进行冲击碾压一次，路基填土高度在6—10米者，进行冲击碾压2次，每次冲击12遍。路基填土高度大于6米的路段，在路基高度填筑到一半时冲击第一次，填筑到路床顶20厘米补强层底面时冲击第二次。路基填土高度在3米以上，6米以下的路段，在路基填筑至路床顶20厘米补强层底面时进行冲碾一次。
三、 冲击碾压前的准备工作
当路基填土高度达到冲击高度后，路基表面用平地机整平，以保证均匀传递较大的冲击力，使冲击碾压达到
Construction of embankment impact rolling implementation plan

   Project in 20 years on March 26 ** invited well-known provincial highway industry experts, the "rolling highway embankment construction methods and technology impact," argues for a discussion, according to the views of experts to discuss the argument, combined with A Shenzhen Expressway Placanticline to the actual situation Fengqiu section, across the board for this project embankment height greater than 3 m sections of impact rolling, to improve the uneven settlement due to embankment caused by diseases, to reduce the total after the completion of subgrade settlement, increase the overall strength of subgrade, to ensure the quality of highway use.
1, Principles
  Impact rolling is to use low impact roller impact force on the filling of large amplitude and fast continuous function periodically, resulting in strong shock waves deep down the spread of the impact of the embankment fill is compacted to enhance the density of filling to reduce the settlement after.
Second, the principle of impact rolling
For roadbed filling height in the 3 - 6 meters, for an impact rolling, roadbed fill height of 6-10 meters, to impact rolling to 2 times 12 times the impact. Roadbed fill height is greater than 6 m section of a high degree of filling in the roadbed to the impact of the first half, filling to the top 20 cm reinforced road bed when the bottom layer of the second impact. Embankment height of 3 meters, 6 meters below the road, embankment filling to the road bed in the top 20 cm layer of bottom reinforcement when an impact rolling.
Third, the impact of the preparatory work before rolling
When the impact of embankment height to height, the subgrade surface leveling with graders, to ensure even greater impact delivered to impact rolling to