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路基防沉降压实设备及工法研究路基压实现状分析
网址:http://www.dhfjx.cn    发布时间:2019-06-03
公路的压实作业是公路施工的重点工作,下面路基设备租赁厂家给大家分析一下关于路基施工和路基设备的一些知识,希望对大家有所帮助!
Highway compaction is the key work of highway construction. The following roadbed equipment rental manufacturers will give you some knowledge about roadbed construction and roadbed equipment, hoping to help you!
1.路基压实的难点
1. Difficulties of Subgrade Compaction
1、路基填料大多就地取材,材料本身成分复杂,现场含水量难于控制,压实质量难于保证。
1. Subgrade fillers are mostly made from local materials. The composition of the material itself is complex, the water content in the field is difficult to control, and the compaction quality is difficult to guarantee.
2、高填方路基工后沉降难以控制。
2. Post-construction settlement of high fill subgrade is difficult to control.
3、改扩建工程新旧路基存在不均匀沉降,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、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,冲击式压路机压实质量难以保证。
4. Due to the limitation of site and working conditions, traditional compaction can only be carried out in small areas, and the compaction quality of impact roller can not be guaranteed.
2.传统路基压实设备的局限性
2. Limitations of traditional subgrade compaction equipment
1、打击型夯锤效率低,会对路基造成裂缝,仅适用于桥头局部小面积压实、补强。
1. The impact rammer is inefficient and can cause cracks in subgrade. It is only suitable for local compaction and reinforcement of small area at bridge head.
2、塔吊式强夯,效率极低,灵活性差,均匀性差,转场困,费时费工。
路基设备租赁
2. Tower-crane dynamic compaction, with low efficiency, poor flexibility, poor uniformity, difficult transition, time-consuming and labor-consuming.
3、小吨位振动压路机无法满足大粒径填料和大厚度压实的要求,压实质量难以保证,效率低。冲
3. Small-tonnage vibratory roller can not meet the requirements of large-size filler and large-thickness compaction, compaction quality is difficult to guarantee, and efficiency is low. punching
4、击式压路机采用牵引车拖动,以一定的速度运动才能产生冲击压实力,无法适应小区间逐段落施工的要求。
4. Percussive roller is driven by tractor, which can produce impact strength only when it moves at a certain speed. It can not meet the requirements of section-by-section construction in different districts.
3.路基压实不足的危害
3. Harm of insufficient compaction of Subgrade
1、路基压实不足是水泥混凝土路面断板的主要因之一。
1. The insufficient compaction of subgrade is one of the main reasons for the breakage of cement concrete pavement.
2、高速公路四改八扩建工程新建路基拓宽段不允许出现沉降,否则新旧路面接合部必然出现纵向裂缝和台阶,严重影响行车舒透性,安全性和使用寿命 。
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 joint of the old and new pavement, which will seriously affect the driving permeability, safety and service life.
3、路基压实不足是沥青路面整体下沉、塌陷、裂缝的主要因之一。
3. The insufficient compaction of subgrade is one of the main reasons for the overall subsidence, collapse and cracks of asphalt pavement.
以上就是由路基设备租赁厂家的小编给我们整理提供的精彩内容了,大家可以收藏我们的网站:http://www.dhfjx.cn!了解更多行业前沿资讯,谢谢大家的支持!
Above is the wonderful content provided to us by the subgrade equipment rental manufacturer's small edition, you can collect our website: http://www.dhfjx.cn! To learn more about the industry frontier information, thank you for your support!
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