高速夯实机在台背路基回填中应用的技术研究
发布时间：2018-11-05 07:31
【摘要】：近年来,随着我国国民经济的快速发展,我国的高速公路建设也在蓬勃发展。在高速公路的运营期间,由于车辆的载重大、行驶的速度快,会有许多工程问题暴露出来,尤其是路桥连接处出现的桥头跳车现象。如果台背填土的质量不能满足施工要求,就会导致在台背处出现较大不均匀沉降,严重威胁行车的安全性和舒适性。由于该类结构的施工中,台背、涵侧墙背填筑是在构造物完成后进行的,在填筑时既要考虑压实设备的冲击能量和冲击范围不损坏构造物,同时又要满足路基规范在台背处的密实度要求,这为公路台背回填施工提出了更严格的技术要求。实际操作中,由于工作面比较狭窄,大型压实机械往往运行不便,效率低,且对一些操作死角难以精细压实;而小型夯实设备通常又难以保证回填达到规定的压实度,因此,施工难度较大。目前,通常使用台背检测数据来评定桥涵台背的回填质量。台背回填质量检测已经成为了台背路基施工控制和施工质量管理的基础性和关键性的方法,会对施工的质量以及施工进度产生很大影响,国外已经开始对台背回填逐渐的重视起来。合理的对台背回填质量进行检测可以有效的提高施工质量和进度。但是,我国还没有对台背路基回填的检测方法加以重视,导致了大量的台背回填不满足施工要求,致使出现桥头跳车现象。因此,为了满足我国公路建设的发展需求,必须得对桥头台背回填施工质量加以控制,保证我国公路质量,促进我国公路行业的蓬勃发展。本文探讨了高速夯实机在台背路基回填中的应用,并探讨了高速夯实机的基本工作原理和施工方法,通过软件模拟和现场试验,全面分析了高速夯实机对桥头台背路基进行夯击时的作用效果以及影响。通过高速夯实机处理台背路基的现场试验,还得到详细、可靠的数据,通过对这些数据进行分析,总结归纳了高速夯实机的作用机理、施工效果以及高速夯实机的施工方法。此外,本论文分析高速夯实机对台背路基夯实的施工质量检测,提出了满足施工要求的施工技术参数和施工工艺。
[Abstract]:In recent years, with the rapid development of China's national economy, highway construction in China is booming. During the operation of freeway, many engineering problems will be exposed due to the heavy load of vehicles and the high speed of driving, especially the phenomenon of bridgehead jumping at the junction of road and bridge. If the quality of the backfill can not meet the construction requirements, it will lead to a large uneven settlement at the back of the abutment, which will seriously threaten the safety and comfort of driving. In the construction of this kind of structure, the backfill of abutment back and culvert wall is carried out after the completion of the structure, so it is necessary to consider the impact energy and impact range of compaction equipment without damaging the structure. At the same time, it is necessary to meet the compactness requirement of roadbed code at the back of abutment, which puts forward more strict technical requirements for backfill construction of highway abutment back. In practical operation, because of the narrow working face, the large compaction machinery is often inconvenient and inefficient, and it is difficult to fine compaction for some operation dead angles. However, it is difficult to ensure that the backfill can reach the specified compaction degree, so the construction is difficult. At present, the backfill quality of bridge and culvert abutment is usually evaluated by abutment test data. The quality detection of backfill on abutment has become the basic and key method of subgrade construction control and construction quality management, which will have a great impact on the construction quality and construction progress. Foreign countries have begun to pay attention to the backfill gradually. Reasonable check of backfill quality of abutment backfill can effectively improve construction quality and progress. However, our country has not paid much attention to the detection method of subgrade backfill on the back of abutment, which leads to a large number of backfill of abutment backfill not meeting the construction requirements, which leads to the phenomenon of bridge-head jumping. Therefore, in order to meet the development needs of highway construction in China, it is necessary to control the backfill construction quality of bridgehead abutment, ensure the quality of highway in our country, and promote the vigorous development of highway industry in our country. This paper discusses the application of high speed ramming machine in the backfill of embankment on the back of abutment, and discusses the basic working principle and construction method of the high speed ramming machine through software simulation and field test. The effect and influence of high-speed ramming machine on the roadbed at the back of bridge abutment are analyzed. The detailed and reliable data are obtained through the field test of treating the roadbed on the back of the platform by the high-speed ramming machine. Through the analysis of these data, the working mechanism, the construction effect and the construction method of the high-speed ramming machine are summarized. In addition, this paper analyzes the construction quality inspection of high speed ramming machine for the roadbed on the back of the platform, and puts forward the construction technical parameters and construction technology to meet the construction requirements.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.1
本文编号：2311352
[Abstract]:In recent years, with the rapid development of China's national economy, highway construction in China is booming. During the operation of freeway, many engineering problems will be exposed due to the heavy load of vehicles and the high speed of driving, especially the phenomenon of bridgehead jumping at the junction of road and bridge. If the quality of the backfill can not meet the construction requirements, it will lead to a large uneven settlement at the back of the abutment, which will seriously threaten the safety and comfort of driving. In the construction of this kind of structure, the backfill of abutment back and culvert wall is carried out after the completion of the structure, so it is necessary to consider the impact energy and impact range of compaction equipment without damaging the structure. At the same time, it is necessary to meet the compactness requirement of roadbed code at the back of abutment, which puts forward more strict technical requirements for backfill construction of highway abutment back. In practical operation, because of the narrow working face, the large compaction machinery is often inconvenient and inefficient, and it is difficult to fine compaction for some operation dead angles. However, it is difficult to ensure that the backfill can reach the specified compaction degree, so the construction is difficult. At present, the backfill quality of bridge and culvert abutment is usually evaluated by abutment test data. The quality detection of backfill on abutment has become the basic and key method of subgrade construction control and construction quality management, which will have a great impact on the construction quality and construction progress. Foreign countries have begun to pay attention to the backfill gradually. Reasonable check of backfill quality of abutment backfill can effectively improve construction quality and progress. However, our country has not paid much attention to the detection method of subgrade backfill on the back of abutment, which leads to a large number of backfill of abutment backfill not meeting the construction requirements, which leads to the phenomenon of bridge-head jumping. Therefore, in order to meet the development needs of highway construction in China, it is necessary to control the backfill construction quality of bridgehead abutment, ensure the quality of highway in our country, and promote the vigorous development of highway industry in our country. This paper discusses the application of high speed ramming machine in the backfill of embankment on the back of abutment, and discusses the basic working principle and construction method of the high speed ramming machine through software simulation and field test. The effect and influence of high-speed ramming machine on the roadbed at the back of bridge abutment are analyzed. The detailed and reliable data are obtained through the field test of treating the roadbed on the back of the platform by the high-speed ramming machine. Through the analysis of these data, the working mechanism, the construction effect and the construction method of the high-speed ramming machine are summarized. In addition, this paper analyzes the construction quality inspection of high speed ramming machine for the roadbed on the back of the platform, and puts forward the construction technical parameters and construction technology to meet the construction requirements.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.1
【参考文献】
相关期刊论文 前2条
1 陈切顺;;ANSYS在道路工程中的应用[J];中国公路;2013年09期
2 胡云,王崇绪;压实技术的发展与应用[J];西部探矿工程;2005年02期
，本文编号：2311352
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