INNOVATIVE MICRO-DUST REDUCTION TECHNOLOGIES

Background: An optimum design of road facilities, such as cantilever columns for traffic lights, walkway block for the purpose of rainwater harvesting with the development of an integration of pole with foundation of street lights on highways is proposed for solving current significant challenges of air pollution. In this study, we suggested solutions for given problems by determination for the location of minimum principal stress in walkway blocks against moving foot loads to design and verifying the determined location of minimum principal stress. Method: An optimum design with a verification example for determined location of minimum principal stress have been presented in a two-dimensional Block member on elastic foundation for pedestrian walkway for reserving water inside. Results: The minimum value for sum of shear forces is found when x1 is 58.58 mm (30% of total span, 200mm), while the minimum deformation is located at x2= 80 mm (70% of total span, 200mm). In a modified model, when moving boundary condition (walkway foot loads) is located at x1(=0 mm), the location of minimum principal stresses is found at 168 mm (84% of span, 200mm), in which the stress concentration due to the foot load is modelled as two layers of distributed loads (reactions of foundation modelled as springs). Conclusion: Consequently, zero deformed reservoirs for rainwater on the neutral axis (x2=167mm) has been determined in the modified model with three-dimensional FEM analysis verifications.