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我国的高速公路路基压实作业的基本情况
网址:http://www.dhfjx.cn    发布时间:2019-03-29
我国的高速公路路基施工周期短,高填方,没有自然沉降期;路基压实作业难以停止,下面由为大家提高一下路基压实作业的根本状况。
China's highway subgrade construction cycle is short, high filling, no natural settlement period; subgrade compaction work is difficult to stop, the following is to improve the basic situation of subgrade compaction work for everyone.
首先,路基压实的难点:
Firstly, the difficulties of subgrade compaction are as follows:
1、受场地和作业条件限制,传统压实只能采用小区间逐段落施工,冲击式压路机压本质量难以保证。
1. Due to the limitation of site and working conditions, traditional compaction can only be carried out in small areas, and the quality of impact roller is difficult to guarantee.
2、路基填料大多因地制宜,资料自身成分复杂,现场含水量难于控制,压本质量难于保证。
2. The roadbed fillings are mostly tailored to local conditions. The data itself is complex, the water content in the field is difficult to control, and the quality of pressure is difficult to guarantee.
3、改扩建工程新旧路基存在不平均沉降,给路面带来质量隐患。
3. The uneven settlement of the old and new Subgrade in the reconstruction and expansion project brings hidden quality hazards to the pavement.
4、高填方路基工后沉降难以控制。
4. Post-construction settlement of high fill subgrade is difficult to control.
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然后,路基压实缺乏的危害:
Then, the harm of lack of compaction of roadbed:
1、路基压实缺乏是水泥混凝土路面断板的主要因之一。
1. Lack of subgrade compaction is one of the main causes of cement concrete pavement slab breakage.
2、高速公路四改八扩建工程新建路基拓宽段不允许呈现沉降,否则新旧路面接合部必然呈现纵向裂痕和台阶,严重影响行车舒透性,平安性和运用寿命 。
2. Settlement is not allowed in the new roadbed widening section of the Fourth-to-Eighth Extension Project of Expressway. Otherwise, longitudinal cracks and steps will inevitably appear in the joints of the old and new pavement, which will seriously affect the driving permeability, safety and service life.
3、路基压实缺乏是沥青路面整体下沉、塌陷、裂痕的主要因之一。
3. The lack of roadbed compaction is one of the main reasons for the overall subsidence, collapse and cracks of asphalt pavement.
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