摘要
填料压实质量是机场高填方工程成败的关键。振动碾压、冲击压实是目前机场高填方填料分层填筑压实的两种常见处理方法,它们具有不同的工作性能。针对西南某山区高填方机场中风化块碎石填料的压实处理,采用振碾及冲压两种工法进行压实试验,并分别进行了沉降量检测、压实度检测、经济效益等方面的综合对比分析,以确定合适的压实方法和施工参数。研究表明冲压处理的施工单价比振碾处理稍高,但其处理效果和工艺效益均优于振碾处理:振碾有效影响深度为60 cm,最大压实度仅为90.3%;冲压有效影响深度为120 cm,冲压20-30遍后压实度达到93%,且施工速度快。由此,确定了用于指导整个工程填筑施工的冲压施工参数,该施工参数在工程应用中取得了良好的压实效果和经济效益。
The compaction quality of filling is very crucial to high - fill airport construction. In recent years the vibration compaction and impacting compaction are two common compaction methods for treating the stone filling of high - fill airport, and they have different working capability. For treating the stone filling of high - fill airport in southwest mountainous areas, the methods of vibration compaction and impacting compaction are adopted to perform compaction test, furthermore, the economic effect and the compaction results of settlement observation,compacting degree test are compared and analyzed synthetically in order to determine an appropriate treating method and working parameters. The experiment results indicate that the economic unit price of the impacting compaction is a bit higher than that of the vibration compaction, but the treating effect of it is better than that of the vibration compaction for this project： the valid effect depth of the vibration compaction is 60cm, and the biggest compaction degree is only 90.3% ; the valid effect depth of the impacting compaction is 120cm, and the compaction degree of 93% can be obtained when treating 20 to 30 times, what＇s more, the treating speed is faster. Thus, the impacting compaction method is taken in use and the reasonable working parameters are defined, which bring both a good compaction effect and an obvious economic benefit in the project practice.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2008年第4期20-24,共5页
Journal of Air Force Engineering University(Natural Science Edition)
关键词
机场工程
填料
振碾
冲压
试验
施工参数
airport engineering
filling
vibration compaction
impacting compaction experiment
working parameter
