Analysis Of Stabilization For High Pier And Long Span Continuous Rigid Frame Bridge

High pier and long span continuous frame bridge is widely used in the landform of high chase-mountain valley nearly years. many long-span PC continous rigid frame bridges with tall piers have been built in our country, especially in northwest part. As more and more such bridges are built. the continuous rigid frame bridges develop rapidly and grow towards long span and moreflexibility. It makes the analysis of the stability more important. So it is necessary to study the stability of the continuous rigid frame bridge with long span and high piers.The text consulted the massive literature material, introduced Continuous rigid frame bridge working characteristic, as well as the development present situation and the future development tendency, and through introduced the domestic and foreign some bridges destroy example, proposed the stable analysis in the actual project significance; The detailed structure theory and the corresponding computational method has been expounded; It has been expatiateed for bridge structure temperature effect theory and the consideration temperature effect stable analysis method, and has studied the different temperature change to the bridge structure influence by taking the Luohe bridge as the example.The text studies the different temperature change to the bridge structure influence; the relations between the non-linearized theory and the stability theory is detail elaborated, the non-linearity to the stable computation influence has confirmed; The article studied the tie beam quantity and the double thin wall pillar spacing to the bridge structural stability influence. The Luohe bridge analysis computation model has established to analysis the stability coefficient about bare pillar, the biggest bracket, the order cross closed up, becomes the bridge four constructions stages, The task is to sought the construction stage most disadvantageous condition through the contraststability coefficient and will provide the reference for from now Continuous rigid frame bridge design and the construction stability analysis.