Construction methods and systems for grade separation structures
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United States of America Patent
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Oct 8, 2019
Grant Date -
Feb 14, 2019
app pub date -
Feb 1, 2017
filing date -
Feb 12, 2016
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Abstract
A cut and cover method of constructing grade separation structures includes partially burying precast substructure elements with associated trench boxes under live traffic. Once the precast substructure elements are buried, the substructure is completed and the bridge span is installed. Other methods include installing precast superstructure elements with a formwork system and forming a bridge substructure and excavating underneath the superstructure once the superstructure is formed.
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