Abstract With the current guiding opinion for ingathering of municipal pipelines into the utility tunnel, the subhigh and high pressure gas pipeline would not be accommodated in utility tunnel. Considering the different position relations between directly buried gas pipeline and utility tunnel, multiple engineering conditions are set and the earthquake dynamic response of directly buried gas pipeline in each condition are calculated by numerical simulation in this research. The calculation results indicate that: (1) the utility tunnel could weaken the earthquake dynamic response of nearby directly buried gas pipeline, in other word, the seismic behavior of gas pipeline buried nearby utility tunnel is better; (2) under the action of earthquake, if the directly buried gas pipeline locates on the right above of utility tunnel, the decreasing extents of earthquake acceleration, displacement and stress are the highest,and the larger the spacing the smaller the amplitude if the gas pipeline locates at two sides of utility tunnel. Thus some suggestions are given to the location of directly buried gas pipeline: (1) if the utility tunnel locates right below the municipal road, the gas pipeline should buried within the central green belt; (2) if the utility tunnel locates un?
derneath the non-motorway at two sides of road, the gas pipeline should buried within the green belts at two sides of road.
Abstract：
With the current guiding opinion for ingathering of municipal pipelines into the utility tunnel, the subhigh and high pressure gas pipeline would not be accommodated in utility tunnel. Considering the different position relations between directly buried gas pipeline and utility tunnel, multiple engineering conditions are set and the earthquake dynamic response of directly buried gas pipeline in each condition are calculated by numerical simulation in this research. The calculation results indicate that: (1) the utility tunnel could weaken the earthquake dynamic response of nearby directly buried gas pipeline, in other word, the seismic behavior of gas pipeline buried nearby utility tunnel is better; (2) under the action of earthquake, if the directly buried gas pipeline locates on the right above of utility tunnel, the decreasing extents of earthquake acceleration, displacement and stress are the highest,and the larger the spacing the smaller the amplitude if the gas pipeline locates at two sides of utility tunnel. Thus some suggestions are given to the location of directly buried gas pipeline: (1) if the utility tunnel locates right below the municipal road, the gas pipeline should buried within the central green belt; (2) if the utility tunnel locates un?
derneath the non-motorway at two sides of road, the gas pipeline should buried within the green belts at two sides of road.
ZENG Gehua1,
2
.Aseismic Performance-based Optimal Analysis on the Installation Location of Directly Buried Gas Pipeline beyond the Utility Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(5): 177-183
2020, Vol. 57 