Rebuilding Old Cement Concrete Pavement Structural Design And Analysis

Cement concrete pavement with high stiffness and load capacity, the tensile strength and durability, stronger, better economic performance, long life and other advantages, but also flat after method is on reaching the age of comfort, maintenance difficulties and other shortcomings. In recent years, with regional economic quickly development, highway development also with of quickly mengjin, small to village village pass road, and big to country province route Highway, and City Road, high grade of and larger of traffic density, traffic volume growth quickly, especially overload vehicles on road of effect, many cement concrete road appeared has crack, and broken Board, and wrong Taiwan, and explicit, and Board end of void, disease, has effect has road of normal using function, effect has local masses of normal travel, serious restricted has place economic of development. At home, the total mileage of about 1.65 million kilometers of cement concrete pavement construction,72% per cent of total mileage of paved roads, large proportion of cement concrete pavement. Most of the concrete pavement has reached its design life, pavement maintenance and renovation is imminent. Weihai of Shandong province, as well as a large number of cement concrete pavement, repair works in Shandong province Transport Department proposed life-cycle, green, low-carbon, resource conservation context, reference to maintenance of cement concrete pavement reconstruction is of great significance and value., Weihai city, Shandong province, the paper relies on G309 MI Shan Zhen Rong Lan line section between cross village and GE Jia Zhen Hang Gezhuang design of cement concrete pavement reconstruction as an example, through surveys, analysis of causes for defects of technology, traffic volume forecast and the proposal of the programme design, comparison and selection of relevant programmes. To further determine the pavement maintenance program, this paper analyses the programmes, and have put forward a programme of cement concrete pavement "gravel" after paving asphalt surface. The programme and the two programmes: repaving and removed directly compared the new, through the recycling of waste materials generated by the social and economic benefit and application effect analysis, through the performance of pavement, construction, durability, environmental protection and other aspects of its merits, the gravel plan is superior to the other scheme is obtained. Test road paving made of cement concrete pavement construction parameter, and test road paving to determine technical parameters, and finally testing data to determine the implementation of the programme. Last through established model for has mechanical analysis and calculation, through simulation "gravel of Hou of road structure layer, analysis research gravel of Hou respectively as new road grass-roots and end of grass-roots different structure layer Shi of may appeared crack of estimates, and respectively is located in grass-roots and end of grass-roots different of back play die volume estimates, and as grass-roots and end of grass-roots different of using years, for Weihai cement concrete road gravel of transformation technology application provides important according to and reference.