马鞍山立交桥台背回填综合处治

Comprehensive way to refill at the abutment back walls of Maanshan Interchange

台背回填设计是公路桥梁设计的重要组成部分。针对桥梁台背特定的工程条件,提出“粉煤灰混合料震捣法”回填工艺及土工格栅加筋综合处治措施,并成功应用于内蒙古赤峰市马鞍山立交桥台背回填施工中。通过对该桥台背沉降数据的观测与分析,验证台背回填综合处治效果,为类似工程设计提供参考依据。

The design of refilling at abutment backwalls is na important part of highway bridge design, In the view of the particular engineering conditions of the back walls of bridges, this article put forward to some comprehensive measures, for refilling technology of shock method for fly-ash mixture and reinforced with geogrids, which measures have been successfuly applied at the abutment back walls of Ma＇anshan Interchange. Based on the observation and the data analysis on the settlement of back walls, the comprehensive way to refill at the back walls has been proven to be effective, thus providing a basis for the similar project design as reference.