Seismic response characteristics and optimization analysis of large-span pipe bridge

The large-span pipe bridge is widely applied to long-distance water diversion projects because of its large crossing capacity, strong integrity, and adaptability to complex terrain. However, under the action of an earthquake, the pipe bridge will often produce large displacement, which can lead to large deformation of the whole system and damage to the pipe bridge structure. At present, there are relatively few studies on the seismic response of such pipe bridges for water diversion, and even there is also a lack of special design specifications for pipe bridges. Combined with the construction practice of the KLH long-span pipe bridge, based on the finite element analysis, the seismic response characteristics and dynamic stabilization of the long-span pipe bridge are analyzed, so the structure optimization scheme is proposed for the key parts of the bridge. The research results can provide new ideas for the seismic design of the long-span pipe bridge.