The application and durability of the arch bridge rely on the hinge core of the two-hinged arch bridge.In this essay,considering the engineering project replacing the traditionally-designed lead-hinge core by reinforced concrete hinge core,the author give us an overall analysis of the construction process and principle.After following-up and investigation over one year,application of reinforced con-crete hinge core leads to effective result eventually.

This paper respectively carried out test comparison on sub-sealing course of modified emulsified bitumen added with and without fiber via test methods such as shearing text, pull-out test, impermeability test and braking test. It summarized the superiority of adding fiber bonding sub-sealing course; and contrastively analyzed the test results of shearing and pull-out of such two kinds of sub-sealing courses and the actual influence. The results show that the performance of fiber reinforced bonding sub-sealing course has more superiority as compared to that of general bonding sub-sealing course.

Due to the special force of vehicle braking, starting and steering, there frequently occurs rut in pavements near road intersections. Based on laboratory tests, this paper studies the road performance of high modulus asphalt mixture in rut prevention. Combined with engineering practice, the application effect is assessed. The study results show that high modulus asphalt used in road intersections will be able to effectively improve road pavement rut performance.