This paper analyzes the vibration reduction characteristics of ladder tracks by numerical simulation and experiments based on the vibration experiments performed in the Laboratory of Tunnels and Underground Works of Beijing Jiaotong University.

Study on the Construction Technology of Ladder Sleeper Vibration Reduction Ballastless Bed on the Urban Rail Viaduct

The paper describes the design of plane layout of ladder sleepers on curve sections with super-elevation and the method of installing super-elevation on curve sections.

The transfer mechanism of longitudinal forces of the rail equipped with ladder sleepers on bridge is different from that of traditional ballastless track because of structural differences.

Analytical solution to concentration distribution discharged from a stream of effluent into trapezoidal channel flow;

A series of experiments are carried on through two kinds of different link transition section(the distortion and the partition wall) as well as the different weir thickness and gap width at the trapezoidal channel.

By means of iteration, a table is achieved for the solution of depth to width ratio and width to depth ratio of trapezoidal channels.

Thirdly,a state of the art and feasible algorithm is implementd to achieve the coordinate adaption and landform adjustment after the full analysis of the different typical movement state on the trapeziform road, so by which a chanllegening goal is achieved that caterpillar tanker will get throug.

The discharge coefficient (C_d) of cylinder flow-measuring flume on the trapezoidal canals has a good correlation with the relative water head (H_s/L) and co.