1.前言以前,具有加劲桁梁的长大吊桥的截面形状,以在主横桁梁上弦杆上放置不考虑共同作用的混凝土桥面板或钢桥面板为多,并且,为提高抗风稳定性,常在两侧加劲桁梁和桥面系之间或者在桥面系的中间部分设置格构。 1. INTRODUCTION In the past, the cross-sectional shape of a long-span suspension bridge with stiffening girders had been placed so much on the chords of the main cross-truss that concrete or steel bridge decks that did not account for the synergy were present and, in order to improve wind-induced stability , Often in both sides of the stiffening girder and deck system or in the deck of the middle part of the set of lattice structure.