Abstract:In this paper, the series jack tensioning system is briefly used as the power device of the following projects: the tensioning of long prestressed tendons, the continuous jacking of PC box girder, the horizontal rotation of bridge, the cable and tensioning of cable-stayed bridge, the climbing mode lifting, lifting and hoisting, etc. It shows that the hydraulic lifting and jacking method has wide applicability in the construction of Bridges and buildings.

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Abstract:This paper introduces the equipment and technology of the whole hydraulic synchronous lifting of steel roof truss in Shanghai Grand Theatre, especially the bearing system, hydraulic system and synchronous control system and their technology.

Abstract:The prestressed steel structure of the steel gate building of the main station of Beijing West Railway Station has a self-weight of 1800t and a total load of 6000t. The upper and lower strings of the steel frame are respectively provided with prestressed bundles, which are divided into two tensioned. The lifting installation of the steel door building adopts a hydraulic integral lifting device.

Abstract:This paper introduces a hydraulic continuous lifting technology for the construction of long-span bridge components, and discusses the feasibility, performance characteristics and application prospects of the technology based on the steel box girder hoisting construction of Humen Bridge.

Abstract:In the operation of Guiliu Expressway in Guangxi, the pavement cracks and the roadbed slides. According to the actual situation of the project, OVM tension and compression dispersive anchor cable is adopted to strengthen the subgrade. The effect is obvious and the safety of highway subgrade is guaranteed.