Study On The Key Construction Technology Of Continuous Beam Swivel

The bridge of bridge construction technology originated in the 1940 s.It is to point to make the position of the bridge structure in the axis design,the girder casting after forming,using s mall turn table or slide friction coefficient and the reasonable structure of rotary table,through the swivel in place of a kind of construction method.Its characteristics are: less construction equipment used,device has the advantages of simple construction and construction process than ordinary beam body;Can be combined with the existing terrain features,prefabricated convenient;The traffic is not affected by construction;Construction materials is less;Construction quickly.It can be placed on the obstacle of bridge structure in a store or near the ground operation,so as to reduce the risk of security,reduces the construction difficulty.Twist beam is not only suitable for single span and three span Bridges,Bridges used can also,in the deep valley,but also adapt the plains and city bridge crossing.Many countries in recent years at ho me and abroad using such method to build the bridge.With the rapid development of national high-speed railway,across different main traffic roads and land is widely used in bridge construction the existing railways of big span prestressed concrete continuous beam.Based on the new ShiJiaZhuang to JiNan railway passenger dedicated line construction across the shide railway bridge on 48 + 80 + 48 m of continuous beam construction as the background,this paper introduces the current situation of the development of twist beam construction,construction method,construction procedure and technological process.Elaborated the swivel construction method in construction of continuous beam span both Business line,for in the engineering practice of drilling piles,pile caps,swivel structure,pier and key construction process of the upper structure etc in detail,and the friction coefficient of the construction of construction has carried on the design and calculation,such as for bridge construction provides a theoretical basis and practical guidance.