Construction Control And Performance Analysis Of Continuous Rigid Frame Bridge Of Railway High Pier

With the rapid development of high-speed railway,the railway bridge in the western mountainous area is also speeding up construction.The high pier continuous rigid frame bridge is widely used.In order to adapt to the special terrain in the mountainous area,the height and span of the pier are increasing constantly,and the static and dynamic characteristics of the analysis structure are very important.In order to meet the requirements of high-speed trains driving,security and durability of the railway bridge in operation stage is more demanding,so the bridge construction monitoring is very important,to ensure the bridge construction quality and meet the design requirements.In this paper,the construction of the continuous rigid frame bridge(the great bridge of guizhou river)is constructed and the construction monitoring of the bridge is carried out.In order to study the performance of the bridge,the difference between the static and dynamic characteristics of the continuous rigid frame bridge(shapingba water kut bridge)with the same main span and span is used as the reference.Mainly completed the following work:(1)analyze the construction control of the railway bridge,and compare the difference between the theoretical value and the measured value of the key control indicators;(2)comparing the basic design parameters of railway Bridges and road Bridges,mainly including structural dimensions and material consumption;(3)comparing the stress and deformation characteristics of the main girders of railway Bridges and road Bridges during construction and bridge stage;(4)the influence degree of the thrust force,the overall temperature change and the concrete shrinkage creep effect on the force and deformation of the bridge pier and the bridge pier;(5)compare the dynamic characteristics of railway Bridges and road Bridges.