| The construction of transportation infrastructure was promoted by the development of science and technology and the progress of the society. The bridges ware built such as bamboo shoots after a spring rain in the motherland. The disease appeared at shallow foundation bridge in Liao Ning Urban, Because of survey and design, construction management, maintenance and so on. Large quantities of bridge need to be checked and repaired and reinforced. It is important that how to understand and analysis the disease of bridge reasonably, and then provide effective reinforcement scheme.This paper takes the existing shallow foundation bridge in Liao Ning urban as the background; in order to survey and analysis the diseases of foundation of shallow foundation bridge. Put forward the reinforcement scheme with root piles. The main subjects are summarized as follow:1. Based on the relevant literatures in home and abroad, introduce the disease of foundation and reinforcement at home and abroad.2. At first we should analyze the damage causes based on the research of shallow foundation bridge in Liao Ning urban, then concluded and summarized, put forward the reinforcement scheme to common problem.3. Safety evaluation models of shallow foundation bridge in Liao Ning urban are built with AHP, the factors such as design standard and construction period, integrity degree of foundation, bearing capacity of this structural, appearance evaluation, the corrosion of reinforced concrete are considered respectively. The weight value of capability such as: importance, magnitude, reparative, difficult degree, degree of stability and developmental. This paper summarized key factor that affect the disease of foundation of shallow foundation bridge in Liao Ning urban, so that we can repair and reinforce the foundation of bridge on the basis it. At last conclude the basic principle and reinforcement method for existing shallow foundation bridge in Liao Ning urban.5. The advantage and consolidation theory of root piles are introduced in detail. The foundation of shallow foundation bridge repaired and reinforced by root piles. This paper analyze common problem in construction process. Put forward some guidance suggestion for shallow foundation bridge when the foundation ware repaired by root piles. |
