Characteristics of soft roadbed of highway and reinforcement methods;

Evaluation of different reinforcement methods for treating a barged-in fall sandy soil foundation;

Common architectural structure strengthening methods selection and the merits and defaults;

According to actual requirements,some strengthening methods such as steel tie rod,sticking steel,steel brace and steel bearing are chosen to reinforce the cantilevers.

The paper analysed the characters of current old-bridges;and researched some general strengthening methods and its mechanism and researched the principles of choosing strengthening method.

The foundation reinforcing method to existing building

This paper expounds the reinforcing methods and the fracture repairing of the concrete structures,and connecting with the engineering examples,introduces the application of the steel-gluing method in the fracture repairing.

Several types of contained in common bridge need be strengthened were generalized,the common bridge reinforcing method and respective application scope,merits and drawbacks were introduced,so as to recovery and enhance old bridge bearing capacity by adopting effective reinforcement measures,therefore satisfied applied requirements.

The defects of the prestressed concrete T shaped rigid frame bridges with suspended beams in service are analysed, and some strengthening methods are proposed In connection with the living examples, the feasible and effective methods are introduced \