欢迎来到山东途畅路桥工程有限公司官网!

logo

  1. 专注强夯机租赁,液压冲击夯租赁、强夯工程施工碎石桩等
  2. 地基软基处理于一体的高质量基础工程施工公司

全国施工租赁热线

18264104888

高速公路路基强夯施工技术要点

网址:http://www.sddhfjx.cn/   发布日期:2021-08-06 关注次数:0
高速公路施工中,为了提升路基结构稳定性,使其能够承受行车荷载,避免发生路基沉降,必须采取有效的路基加固施工技术。强夯法是一种有用的路基施工技术,可有用满足路基施工要求,应用范围广泛。因此,对强夯法在高速公路路基施工中的应用进行深入研究迫在眉睫。
In expressway construction, in order to improve the stability of subgrade structure, enable it to bear driving load and avoid subgrade settlement, effective subgrade reinforcement construction technology must be adopted. Dynamic compaction method is a useful subgrade construction technology, which can meet the requirements of subgrade construction and has a wide range of applications. Therefore, it is urgent to study the application of dynamic compaction method in expressway subgrade construction.
高速公路路基强夯施工准备工作包括施工参数选择、施工机械设备选择等。对于夯击施工参数,应综合考虑高速公路工程特点合理选择,确保在对路基进行强夯施工时,能够达到良好的施工效果,具体而言,需对各个夯点的要求进行合理控制,每个夯点在夯击两次沉降量的差值应控制在5cm以内,另外,夯点周围土体的隆起高度应控制在10cm以内。在高速公路路基强夯施工中,需要保证一定的夯实度,提升夯实施工效果。
The preparation for dynamic compaction of Expressway Subgrade includes the selection of construction parameters, construction machinery and equipment, etc. For compaction construction parameters, comprehensive consideration shall be given to the characteristics of Expressway Engineering and reasonable selection shall be made to ensure that good construction effect can be achieved during dynamic compaction of subgrade. Specifically, the requirements of each compaction point shall be reasonably controlled, and the difference of settlement of each compaction point during compaction shall be controlled within 5cm. In addition, The uplift height of soil around the tamping point shall be controlled within 10cm. In the dynamic compaction construction of expressway subgrade, it is necessary to ensure a certain degree of compaction and improve the compaction construction effect.
在强夯施工中,所需要应用的机械设备种类较多,包括起重机械、夯锤、锚系设备等,其中,在起重机类型选择时,应根据夯锤及起重高度合理确定,一般可选择高度在15m以上的起重机,而对于夯锤,则需根据夯能要求合理选择。
In dynamic compaction construction, there are many types of mechanical equipment to be used, including hoisting machinery, rammer, anchor equipment, etc. among them, the type of crane shall be reasonably determined according to the rammer and lifting height. Generally, the crane with a height of more than 15m can be selected, while the rammer shall be reasonably selected according to the requirements of tamping energy.
另外,还需要注意,在对高速公路路基进行强夯施工前,需要对施工场地进行清理,施工现场地表土、种植土等,在清理完成后,还需要对地基土进行土工试验,确定土体的好的含水量以及大干密度,安排技术人员对施工场地以及周边的构造物、地下管线分布情况进行勘察,并结合实际情况采取相应的保护措施。
In addition, it should also be noted that before the dynamic compaction construction of expressway subgrade, the construction site needs to be completely cleaned to remove the surface soil and planting soil on the construction site. After the cleaning, it is also necessary to conduct geotechnical test on the foundation soil to determine the good water content and large dry density of the soil, and arrange technicians to inspect the construction site and surrounding structures Investigate the distribution of underground pipelines, and take corresponding protection measures in combination with the actual situation.
在强夯施工前,对于施工现场地表面,采用推土机进行整平处理,预压施工次数一般在2次以上,需注意合理布置施工现场临时车道,合理设置道路宽度、高度和强度等,保证机械设备能够正常出入施工现场,确保施工的连续性。除此以外,在高速公路路基施工现场,还应设置排水基础设施,避免积水较多而对路基施工质量造成不良影响。
Before the dynamic compaction construction, the ground surface of the construction site shall be leveled by bulldozer first, and the preloading construction times are generally more than 2 times. Attention shall be paid to reasonably arrange the temporary Lane on the construction site, and reasonably set the road width, height and strength, so as to ensure the normal access of mechanical equipment to the construction site and ensure the continuity of construction. In addition, drainage infrastructure shall be set at the subgrade construction site of Expressway to avoid adverse impact on subgrade construction quality due to large amount of ponding.
  • 标签: