Single-girder bridge by a single main beam and in the end beamspan both sides of the composition, dual-beam bridge consists of two main beams and side beams formed.
单主梁桥架由单根主梁和位于跨度两边的端梁组成，双梁桥架由两根主梁和端梁组成。
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Based upon dozens of analysis cases on gabled frames with different beamspan, column height and roof grade, the behavior or influence of tension rod to frame stress and frame stability is determined.
In this dissertation, the shear lag effect for large span box-section beam structure and the structural nonlinear anti-seismic capability have been theoretically and experimentally investigated.