Maintenance Planning of Qinglian Expressway Based on Its Life Cycle
|School||Xi'an University of Architecture and Technology|
|Course||Bridge and Tunnel Engineering|
|Keywords||Cement Concrete Pavement Preventive Maintenance Decay forecast Maintenance Decisions The best preventive maintenance timing Conservation effect Dynamic Programming|
At present , China has recognized the importance of preventive maintenance on the road , but the effectiveness of preventive maintenance , preventive maintenance , and integration of the existing pavement management system is limited to theoretical analysis , preventive maintenance decisions for new pavement overall macro - planning , yet the national preventive conservation measures in the design and construction guidelines , which led directly can not really grasp the timing of preventive maintenance , resulting in a lot of preventive maintenance does not achieve the desired results . The overall dynamic programming from the point of view of how to take the best preventive conservation measures for specific sections of road network , in order to get the maximum benefit . First , relying on the actual situation of Qinglian Expressway , to establish pavement performance decay equation on the basis of the existing model , and pavement performance decay prediction . Then, we proposed cement concrete pavement preventive maintenance indicators , determined on the basis of domestic research information , cement concrete pavement preventive maintenance road condition standard . Again based on the Pavement Condition Index - international roughness index method to determine the best preventive maintenance timing , quantitative analysis and evaluation of preventive maintenance effect , the development of preventive maintenance life cycle to take measures within the scope of each time . The combined decay predicted results each time period preventive maintenance measures to be taken for life cycle cost analysis to determine the different time periods, the same disease that should be taken reasonable measures , and to determine the life cycle of Qinglian Expressway can be taken including daily preventive conservation strategies . Finally, road maintenance funds dynamic programming, to develop the best conservation strategy embodiment .