Analysis And Research On Construction Control Of Long-span Cable-stayed Bridge

With the development and improvement of modern science and technology and electronic computer gradually,and with the quick development and extensive application of modern large construction mechnical equipments and construction architectural material,the construction of long-span cable-stayed bridge is not only proved to be true and feasible,but also has been taken into reality.Although construction and construction control procedure of long-span cable-stayed bridge is a very complicated work,at present,analysis and research on construction control of long-span cable-stayed bridge have become an important problem that many bridge engineers and researchers pay an attention to.First,this paper describes the concept , features, importance, development trend of construction control of long-span cable-stayed bridge. Following, the establishment of construction control system of long-span cable-stayed bridge are introduced. Third,this paper makes an elaborate analysis and research on construction control (monitoring and control) in the construction stage of Ion-span cable-stayed bridge,which is the most important part in this paper.In the first, main theories and main methods that are specificly executed in the course of construction control of long-span cable-stayed bridge construction stage,and relative problems of adjustment and optimization of cable stress are discussed in the construction of long-span cable-stayed bridge,Kalman filter wave method and influence matrix method of cable stress optimization are especially analyzed during the course of construction control.In the last,in view of the successful experiences in the construction control of Anqing Changjiang River Highway Bridge, especially construction control in the construction stage of long-span cable-stayed bridge is further analyzed and researched. The goal to analyze and study construction control of long-span cable-stayed bridge is how to select scientific, valid, economical construction technics and construction methods ;at the same time,To make scientific, valid organization and construction for every detail and every program during the course of the construction of long-span cable-stayed bridge,and to do scientific, strict, valid mornitoring and control to the construction,which makes cable stress, line style, main height and tower top displacement etc parameters meet the need of design in the construction of long-span cable-stayed bridge,and guarantee the construction safety and construction quality of long-span cable-stayed bridge.Therefore,to analyze and do research on construction control of long-span cable-stayed bridge is very essential,and it makes a difference.