Abstract
Collapsible scissor bridge is a portable bridge that can be deployed during emergency state to access remote areas that are affected by disaster such as flood. The objective of this research is to design a collapsible scissor bridge which is able to be transported by a 4x4 vehicle and to be deployed to connect remote areas. The design is done by using Solidworks and numerical analysis for structural strength is conducted via ANSYS. The research starts with parameters setting and modelling. Finite element analysis is conducted to analyze the strength by determining the safety factor of the bridge. Kutzbach equation is also analyzed to ensure that the mechanism is able to meet the targeted degree of motion. There are five major components of the scissor structure; pin, deck, cross shaft and deck shaft. The structure is controlled by hydraulic pump driven by a motor for the motions. Material used in simulation is A36 structural steel due to limited library in ANSYS. However, the proposed material is Fiber Reinforced Polymer (FRP) composites as they have a high strength to weight ratio. FRP also tends to be corrosion resistance and this characteristic is useful in flooded area.
Highlights
Flood is one of the common disasters in tropical countries
Malaysia East Coasts Environmental Research Institute of University Sultan Zainal Abiden (USZA) claimed that 29,800 km2 of vulnerable area to this disaster sourcing from a few numbers of river basins in peninsular Malaysia and almost 4.82 million residents are at risk especially during monsoon seasons [1]
It is mentioned in the report that they would have to increase logistics capabilities such as adding more equipment and have more boats and trucks to standby for this disastrous phenomenon. This suggestion might not be the best solution to this problem in accessing remote areas
Summary
Flood is one of the common disasters in tropical countries. Malaysia East Coasts Environmental Research Institute of University Sultan Zainal Abiden (USZA) claimed that 29,800 km of vulnerable area to this disaster sourcing from a few numbers of river basins in peninsular Malaysia and almost 4.82 million residents are at risk especially during monsoon seasons [1]. According to the Annual Report 2014 by Malaysia Rescue Team or BOMBA, it is suggested that they revise their existing disaster Standard Operating Procedure [2]. It is mentioned in the report that they would have to increase logistics capabilities such as adding more equipment and have more boats and trucks to standby for this disastrous phenomenon. This suggestion might not be the best solution to this problem in accessing remote areas.
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