Study on semi-active control of highway bridge pounding under seismic excitations;

Structural test and evaluation of in-service highway bridges;

Maintenance and management of highway bridges;

The development and application of road bridge maintained management system;

Prevention technology and measure of bumping at bridge head on road bridge

Through consulting references about bridge reinforcing and on-the-spot survey of damage on bridge,this paper introduces the common disadvantages on road bridge and the importance of reinforcing old road bridge.

The strengthening and regulating work of the Goutou short bankhead in Lianggong Dyke adopted the comprehensive treatment technology such as strengthening the short bankhead,dumped rockfill and bank protection and the triangular taper penetrating frames.

Introduction and example of preliminary seismic evaluation of highway bridges in USA;

This paper discusses the principal factor,the structural damping ratio affecting response spectrum in code of seismic design of highway bridges.

As one part of work in an expert system for the evaluation of seismic resistance of highway bridges, the probability and degree of deformation and structural strength damage caused by earthquake in highway bridges are specifically analyzed.