Abstract:This paper is the first part of the test and research report of the S-shaped curve prestressed continuous box girder bridge on the branch line of Shugang Road East No. 1 Bridge in Dalian City, and introduces the test and research of the prestressed friction loss of the bridge in detail.

Abstract:This paper introduces the structure of prestressed concrete continuous rigid frame box girder, pier girder joint and hollow high pier column of the main bridge of Qingshuihe Bridge of Nankun Railway, and discusses some problems considered in the design of prestressed system of rigid frame beam.

Abstract:Self-anchored suspension bridge is a popular urban landscape bridge in China recently. This paper mainly introduces the construction technology of the suspension structure installation of Ziyahe Bridge in Tianjin.

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Abstract:This paper introduces a novel superstructure construction method of self-anchored suspension bridge, which breaks through the construction technology of traditional self-anchored suspension bridge with beam and cable at the back, and focuses on the construction of the superstructure of Suzhou Zhuyuan Bridge.

Abstract:The upper structure of the non-navigable hole of Donghai Bridge adopts the equal span 70m prestressed concrete continuous box girder. This paper introduces the structural design, anti-corrosion measures, pier top joint, structural calculation analysis and prefabrication of 70m span prestressed concrete box girder with full hole prefabrication.

Abstract:Through the application of OVM porous coupler in prestressed continuous box girder, the function of porous coupler in prestressed box girder is explained, and its application method and precautions in construction are introduced.

Abstract:Beijing Huangcun overpass is located in the Jingkai Expressway, the traffic load is heavy, after 2 years of use, the round plate rubber at the abutment position has different degrees of deviation. On the premise of not blocking the traffic, using YBD250-18 flat special jack successfully completed the reset or replacement of 24 rubber bearings.