Based on the analysis of existing circumstance of the transition section guardrail of the highway and bridge on high grade highway,this paper discusses and summarizes the existing major problems.

Comparative analysis of the dynamical characteristic of different types of road-bridge transition section;

This paper researches into the settlement of the road-bridge transition section of high-speed railway line,including the comprehensive technical test on Qingshen passenger line for "test and research on the means of setting up the road-bridge transition section".

The reasons and hazards of settlement in road-bridge transition section are analyzed.

Dynamic response properties of two-way subgrade in bridge-subgrade transition section under moving load

Vibration characteristics of high speed railway's bridge-subgrade transition section

According to the field test data of the bridge-subgrade transition section in permafrost regions during 3 years after the construction,the ground temperature variation inside different locations of subgrade and the settlement deformation rules of subgrade basement and subgrade in different locations of the cross and the longitudinal section were analyzed.

Differential settlement control criteria of bridge-approach on ride comfort;

The people-vehicle-road analysis model has been established through the simplification of bridge-approach with the slab when the vehicle passes the transition section.

The authors study on the mechanics of the treatment to transition section between bridge abutment and embankment with the measures of precompression,reducing subsidence and comprehensive measure,also summarize the settlement character and variation law of treating with bridge-approach,and figure that it is better to adopt proper methods of foundation reinforcem.

Estimate and Deformation Regularity Research on Subgrade in Roadbed-bridge Transition Section of ShuoHuang Railway;

Judged from the current expressway operation,there is bumping phenomenon widespread at the roadbed-bridge transition section.

With engineering practice, the article first descries the necessity of setting changeover portion between bridge and road and then introduces in details the structural design and construction experience of the changeover portion set above soft clay.