Bridge Transition Section Differential Settlement Treatment Measures Study

Disease often occurs at the transition section between bridge abutment and embankment. The bump at the approach abutment is one of the difficult problems of worrying the highway construction, the harmfulness of which is being taken into account increasingly by the people working in highway filed.This paper begins with the harmful analysis of the bump at the approach abutment, and analyses the cause of differential settlement at the transition section between bridge abutment and embankment, and gives the calculation method of differential settlement and treatment length. By analyzing and studying the treatment mechanism and compatibility of approach slab, lime-loess replacement, lime and fly-ash mixture replacement, geogrid reinforced clay, geocell flexible approach slab, light filling and semi-rigid compaction pile composit foundation etc. treatment methods, the author summarizes the practicable range of common treatment methods, and on this bases, the author puts forward the engineering design methods of common treatment measure and gives the methods of how to ascertain the parameters, and at the same time, summarizes each feature. At last, combined with the engineering example, the author discusses the economical efficiency, rationality and effectivity of design scheme.