This paper focuses on the design and research of bolt connection about prefabricated utility tunnel in Xiong'an New Area.The prefabricated pipe joints were connected with 10.9 grade high-strength bolts,and 8 bolts are set along the armpits of the two tank pipe galleries.During construction,12 oil cylinders evenly distribu-ted around the tunnel were used to synchronously push and compress the sealing rubber strip.After achieving the optimal compression rate of the sealing rubber strip,high-strength bolts were used to lock the tension.Under static working condition,it was concluded that 8 M42 grade 10.9 bolts were required for the connection of prefabricated pipe joints between the two compartments to meet the requirements.Under seismic condition the bolts were not yielding and were in an elastic working state.This paper can be used as reference for similar projects.
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