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对于钢箱梁桥面铺装早期破坏严重的问题,国内外进行了大量研究以寻求解决办法,如采用造价昂贵的环氧沥青、增加钢箱梁顶板厚度等,但问题依旧未能从根本上解决。以广州珠江黄埔大桥悬索桥的钢箱梁铺装体系为例,从经济性和易于工程实施角度出发,提出在钢箱梁顶板纵向加劲肋之间加设横向加劲小肋,以优化铺装体系受力,并对加劲肋形状的影响进行了比较分析。结果表明,该方法可以有效减小铺装层的危险应力,同时钢箱梁的受力状况没有明显变化,且箱梁重量增加较小。该方案已在珠江黄埔大桥的部分梁段进行了实践,经工程测试表明该方案达到了预期目的。
In the early stage of steel box girder bridge deck devastating problem, a great deal of research has been carried out at home and abroad to find solutions, such as using expensive epoxy asphalt and increasing the thickness of steel box girder roof, but the problem still fails to fundamentally solve. Taking the steel box girder pavement system of the Guangzhou Zhujiang Huangpu Bridge as an example, from the perspective of economy and easy engineering implementation, it is proposed to add transverse stiffening ribs between the longitudinal stiffeners of the steel box girder roof to optimize the pavement system Force, and the impact of the stiffener shape were analyzed comparatively. The results show that this method can effectively reduce the dangerous stress of pavement, while the steel box girder stress conditions did not change significantly, and the box girder weight increase is small. The program has been carried out in the Pearl River Huangpu Bridge part of the beam section, the project tests show that the program has achieved its intended purpose.