与在河道下深打桥墩基础的短跨距相比，长跨距对航运更好更经济。
Wider spans are more economical and better for the navigation of shipping than shorter ones between piers with deep foundations penetrating the bed of the waterway.
该桥桥墩基础位于水流湍急的深水区，基础施工、桁梁的架设均有很大的难度。
The bridge pier bases locate deep water region where the water flow is rushing, so, the construction of bases and truss beams was difficult.
软弱地基上的重力式桥墩，在强烈地震作用下， 有可能会发生桥墩基础提离现象。
The gravity bridge pier built on weak ground base may be lifted off the base during strong earthquake event.
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