关于路桥地基基础沉降处治技术
2016-10-21华英杰
华英杰
摘要: 随着高速公路的发展,以及高速路程的延长,人们在公路行驶上对舒适度要求也随之升高,桥头跳车现象是公路路桥上的普遍问题,影响了行车过程中的舒适性,并给行车的安全性带来隐患。产生此现象的主要原因是公路桥过渡段的差异沉降,而差异沉降的产生大多数是因为地基出现沉降现象导致的,在处理此现象的过程中,也不得不面对地基处理等问题。由于公路已经运营过了一段时间,地基绝大多数已经固结,所以针对地基进行施工费时费力,很少采取此种处理方法。但是地基的地质如果是软土等不良地基,并且施工后没完成沉降,那就必须采取对地基处理的方案。
Abstract: With the development of the expressway, and the extension of the high-speed road, people also set higher requirements on comfort when driving on expressway. Vehicle dumpping phenomenon is a common problem on the highway bridge, which affects the driving comfort, and brings safety risk of driving. The principal cause of this phenomenon is the differential settlement road bridge transition section, and the main cause of differential settlement is foundation settlement, so foundation treatment is necessary in dealing with this phenomenon. Because the road has been operating for a period of time, the foundation has been solidified, so foundation construction is hard and labor consuming. But if the foundation is soft soil and has been completely settled after the construction, foundation treatment scheme is a must.
关键词: 地基沉降;处治方法;复合式地基;强化地基
Key words: foundation settlement;treatment method;composite foundation;strengthen the foundation
中图分类号:U416.1 文献标识码:A 文章编号:1006-4311(2016)09-0092-02
0 引言
路桥交通运输行业的发展对人们生活水平的提升有很大的影响,因此,我国对路桥施工非常重视。路桥施工中存在着很多的问题,其中,路基不均匀沉降会对路桥正常运营产生严重的影响,会导致路面结构出现过度破坏,给行车安全带来很大的隐患,同时也会增加一大笔养护和维修费用。本文对路桥施工中路基不均匀沉降问题进行了简要分析,结合工程实例,详细解析一套更完善的路桥地基基础沉降处理技术及施工措施,并结合施工效果验证本方案的可行性,以期形成可供参照的技术资料。
1 常见地基类型的处治方法
在对地基处理的过程中,主要是针对岩体土的处理,岩体土的特点是复杂多变。……
