Feasibility Analysis on Application of Modified Concrete Contains Rubber Powder of Straddle Type Monorail Train Waste Tire

Abstract

As a kind of solid waste, the straddle type monorail vehicle waste tire was not only increased the operating costs, but also brought environmental pollution problems; while at the same time the rigidity value of bridge-subgrade transition section in existing monorail system was relative big and the settlement difference still exists between transition section and subgrade, these problems would resulted in tensile failure of the transition section under monorail train loads. In order to solve those problems, an idea that using the modified concrete contains rubber powder of straddle type monorail train waste tire as the material of bridge-subgrade transition section is proposed. The finite element software Midas/GTS was being used to analyse the stress and settlement of bridge-subgrade transition section under static and dynamic load. These results shown that, when the rubber concrete was filled above the reference concrete, the maximum stress of bridge-subgrade transition section reduces significantly, the average reduction value is 34.82%.at the same time according to the fact, this new methods will save more than one million operating costs per year of Chongqing monorail transit system.