Construction Techniques Of Highway Interchange In AnKang Mountainous Areas

Interchange is an important transportation infrastructure during highway construction by using three-dimensional space to eliminated plane intersection point.In recent year highway interchange becoming more and more common and its scale is bigger and more complicated.This paper studied the C of interchange ramp cast-in-place beam,five high slope and C ramp tunnel construction technology and engineering quality and safety control measures Because of cast-in-situ C interchange ramp cast-in-place beam construction process across the main line,local road reconstruction and D ramp bridge,therefore,research process,the original design of full framing,change to Berea steel truss.Due to the five comprehensive high slope steep slope rate,poor geological conditions,through the stability analysis and evaluation,to hammer will be the original design loose blasting excavation,and put forward the flexible active defend net,to anchor frame beam protection.For through 5 C ramp platform is the first step on the slope of the tunnel construction,the original design by new Austrian method by the route of imports to tunneling to exports,with five effects cross slope construction,instead of from the export to entry by new Austrian method principle alone head driving,and uses the hammer broken out of the hole.Through this topic research and put forward a series of construction key technology,including high slope excavation and protection technology,anchor bars Berea cross steel truss support,slope and tunnel construction technology,etc.Ensure that five of the slope stability,improve the way of tunnel excavation and construction method,solve the problems of side slope and tunnel construction,it can meet the actual needs of the construction and open to traffic,ensure the construction goal smooth realization.In order to guarantee the engineering quality and safety,by analyzing the construction process where is easy to occurred interchange of quality and safety problems,summarizes the quality control standards and implementation measures and security measures,on the one hand,it can help to promote the smooth implementation of this project,on the other hand it also can help to promote the development of regional economy and serve as a reference for similar projects.