![]() ![]() For example, will the underpass construction impact the existing railway operations? How to maintain the construction safety in both rail and highway operations? This paper brings construction technology using I-girder systems to provide a solution for highway underpass projects constructing beneath the existing rail corridors. It is concluded the method of I-girder systems is capable of supporting railway dynamic movements during highway underpass construction.Ībstract = "In metropolitan areas, when a highway underpass project is being planned to go beneath an existing railway corridor, there are a number of concerns that could have an impact on the project. ![]() This paper further discusses strategies that were used to mitigate the potential building collapses and foundation failures. During the construction of underpass, the contractor encountered geotechnical issues that had a severe impact on the construction safety and the integrity of foundation. A case study is used to demonstrate the applicability of I-girder systems in ensuring underpass construction smoothly while maintaining existing railway operations in a safety manner. This paper describes the construction procedures of the I-girder systems installation and daily inspection processes. Depending on the spans of underpass structures, a contractor can decide the number of I-girder units to be assembled and installed on site. This type of I-girder systems has been widely used in several countries as a temporary "bridge" structure in support of dynamic rail movements during underpass construction. The I-girder systems have been proved as a reliable method for highway underpass construction without the interruption of railway operations. ![]() In metropolitan areas, when a highway underpass project is being planned to go beneath an existing railway corridor, there are a number of concerns that could have an impact on the project. ![]()
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