The Research Of Single Cable Surface And Double-layer Cable-stayed Bridge Construction Control

Cable-stayed bridge has become one kind of bridge types which develop faster and appear highly competitive in modern bridge engineering because of its superior capacity, reasonable force system and the new structure With the increased size of cable-stayed bridge construction and structure of novel, brought to the design and construction of many new subjects,cable-stayed bridge construction control currently has become one research topic of common interest and study for the majority of the scholars and bridge engineers.Bridge construction control is based on simulation analysis of the construction, through simulation analysis to determine a reasonable construction state, mainly using the initial cable tension and camber to guide the actual construction of the bridge to meet the design expectations to ensure the safety of structures in construction process.This paper first outlines the development of cable-stayed ridge .introduces the status of the domestic and foreign cable-stayed bridge construction control, then details the construction control of cable-stayed bridge of content, methods, principles and factors that affect the construction control of cable-stayed bridge, analysis the bridge construction simulation theory, and the determining method of a reasonable completion and construction state and details the forward iterative method. of determining the reasonable construction state.And then to Mianyang hui ke ting yi hao cable-stayed bridge as a background,establishing finite element modeling and simulating the whole construction process to determine one reasonable construction through forward iteration method of bridge designed cable tension as a reasonable state.Combination the double-deck features of the bridge, analysising the pedestrian bridge cable change and its impact on the car dealers, the main beam aximum cantilever state stability Summarizes the causes of error in construction control stage,Analysis the influence of weight error girder.Finally detailing the pylon monitoring work during the construction and Enumerates some of the test results but also carrying out the element analysis for the steel tower lifting of the important facilities in the steel lifting.