桥头跳车是影响山区高速公路行车安全舒适的重要因素之一,而且行车冲击会对构造物产生不良影响,究其原因主要是桥台背回填出现不均匀沉降的质量缺陷问题造成的。台背回填质量已成为高速公路质量管理的重点,本文以永宁高速公路清流段这一山岭重丘段的桥梁台背填筑施工为背景,从检测角度分析了影响台背回填质量的因素,并提出质量控制办法。实践证明这些控制办法是可行的。 Bridgehead jumping is one of the most important factors affecting the driving safety and comfort of highway in mountainous area, and the traffic impact will have an adverse effect on the structure. The main reason is the quality defect caused by the uneven settlement of backfills. Backfill backfill quality has become the focus of expressway quality management. In this paper, the Yongning Expressway Qingliangdu section of the bridge backfill construction as the background, from the test point of view analysis of the backfill backfill quality factors Put forward quality control measures. Practice has proved that these control methods are feasible.