路基沖擊碾壓施工實施方案.doc

路基沖擊碾壓施工實施方案

   項目公司在20**年3月26日邀請省內公路行業的知名專家,對“高速公路的路基填土沖擊碾壓方法和工藝”,進行了研討論證,根據專家研討論證的意見,結合阿深高速公路長垣至封丘段的實際情況,對于本項目全線路基填土高度大于3米的路段進行沖擊碾壓,改善因路基不均沉降而帶來的病害,減少路基完工后的總沉降量,提高路基的整體強度,保證高速公路的使用質量。
一、 原理
  沖擊碾壓是利用沖擊式壓路機低頻大振幅沖擊力作用于填土，并快速連續周期性地作用，產生強烈的沖擊波向下深層傳播，對路基填土進行沖擊碾壓，提高填土的密實度，減少工后沉降。
二、 沖擊碾壓原則
對于路基填土高度在3— 6米者，進行沖擊碾壓一次，路基填土高度在6—10米者，進行沖擊碾壓2次，每次沖擊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時沖擊第一次，填筑到路床頂20厘米補強層底面時沖擊第二次。路基填土高度在3米以上，6米以下的路段，在路基填筑至路床頂20厘米補強層底面時進行沖碾一次。
三、 沖擊碾壓前的準備工作
當路基填土高度達到沖擊高度后，路基表面用平地機整平，以保證均勻傳遞較大的沖擊力，使沖擊碾壓達到
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

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