Risk Xinguang Road Overpass South Island Complex Environment Of Steel Box Girder Construction Scheme

Sunbeam South Island Expressway overpass located in Haizhu District of Guangzhou South Central Expressway and Xinguang Road intersection, in the form of a three-tier interchange, this new expansion project is based on the original line on the increase interoperability ramp, increased ramp next to the traffic arteries, rivers, bridges or roads have been built, which relates to a method of lifting a very important part of the construction to be successful on the existing structures.The new integrated technology solutions applied to I and K I0 ~ I8 ramp ramp K0 ~ K2, K5 ~ K8 steel box girder between. Steel box girder structure with single box three rooms, the use of two cross-linking, cross triple, quadruple, etc. across several mounting forms, the total line length of 425 meter and a flat curve, vertical curve. Firstly, the design of the Sunbeam South Island Expressway overpass project management system, developed a project objectives, determine the appropriate project management organization, and the establishment of quality, schedule, cost, and safety management system. Aiming Sunbeam South Island Expressway overpass project difficulty- a complex environment construction, carried out a variety of methods of construction scheme comparison and determine the different terrain choose a different construction program. Paper gives a soft texture suitable for some groups, cross the creek and across the highway terrain, due to site location restrictions, can not be directly crane hoisting, lifting to a position should first and then horizontally or steel box girder vertical sliding in place a complex environment. Paper further analyzes the risk factors exist in a variety of construction methods, and the identified risk factors were assessed, ultimately gives the risk responses.Aiming at the scene complex environment, integrated steel box girder construction technology research and technical research, the application of the technical achievements of construction, construction practices by the project, in a complex environment of urban overpass integrated steel box girder construction areas achieved good experience in construction, to ensure construction safety, cost savings, and full-bridge and linear quality to meet the design and specification requirements, the paper conclusions are conducive Sunbeam South Island Expressway overpass steel box girder construction projects, contributing to project objectives.