Design Of Subgrade And Pavement Engineering Of Longkou Qingdao Highway Laixi-Chengyang Section

In this paper, for the dragon to Qingdao road Laixi (Shen Hai) to Chengyang engineering design, to fast track construction of a link between two places in Laixi Chengyang, the transportation between cities is more convenient, so that both to accelerate the flow of material in the process of transportation, reduce expenses, and to places and regions along the the road of economic development, the formation of this road on the multi-dimensional development model.The design of road is an important part of Qinglong expressway, connecting Jimo east line starting point to the small port by using existing crane hill road, a small port east coastal highway section of the four lane highway, the design speed of80km/hour, roadbed width of24.5meters, the coastal highway to the North Han Jia Ling with dual two lane highway standard, the design speed of80km/hour, roadbed width of12meters. Jimo connecting line is full-length18.420km (new road13.148km), permanent covers an area of53.275hectares, roadbed fill540800cubic meters,440700cubic meters of excavation; set up a total of1bridges, bridge3, bridge4, channel2,34culvert. The design of the main content of route plane design, vertical section design, roadbed and pavement, retaining and protection design, pavement structure design, design of bridge culvert design and drainage.The project is located in the eastern low mountain and hill to a part of the district hill plain. The topography is controlled by regional structures, the terrain is generally characterized by low middle high two, high near the Dagu River, the lowest. The relatively flat terrain, landform type is relatively single, stratum structure is relatively simple, although many faults through along the route, but are not new active faults along the landslide; not found, Yan Rong, collapse, debris flow, goaf, ground subsidence and other geological, site stability is good, the overall project area belongs to the engineering geological conditions simple site. Engineering geological conditions are favorable to the construction of the project.The design is combined with the terrain, object to maximize the use of the beautiful alignment, try to bypass the village building dense areas, strengthen the greening and protection embankment, the road and the nature com. Every and crossed the road, sewers, drains, are set to the bridge and channel, in order to reduce soil erosion and the impact on the original water system. In the village of intensive sections along both sides of the proper planting shrubs and trees to beautify the environment, attenuation, noise and air pollution.Qinglong expressway, blank will fill the region in the eastern part of Laixi city is not the north south highway, Qingdao city and five city will enhance the freeway now direct intercommunication, closer to the distance between the northern region of Qingdao urban district and Laixi, Jimo and other time and space. At the same time, Qinglong speed also joined ginger Hill Industrial Park, Laixi Jimo Huashan Industrial Park, Longquan Industrial Park, industrial park and a number of parks, forming a North-South economic corridor, Jimo connecting line directly connected blue Silicon Valley core area, the blue Silicon Valley core areas of development and construction and the future of Aoshan port port has played an important role. In this paper, in order to Longkou to Qingdao road Laixi (Shen Hai) to Chengyang road engineering design as an example, according to the complex situation of the highway construction in China, elaborates the design idea of city road and technical points, learned from the design process of high grade highway in lessons, accumulate experience for the complex design of high grade highway future.