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预应力连续箱桥梁采用的是纵向直线预应力和竖向预应力结合,采用此种结合法建造出来的桥梁具有横纵竖向刚度大、变形小、抗扭性好等特点,适合现代交通中高速重载的发展要求。同时箱梁内部能够很好的满足管线等公共设施的布置,所以预应力连续箱梁桥得到了广泛的应用。但是,随着预应力连续箱梁的大量修建,出现了不少问题。本文要探讨的是预应力连续箱梁腹板裂缝的成因及其加固的研究。
The prestressed continuous box bridge adopts a combination of longitudinal linear prestress and vertical prestress. The bridge constructed by this combination method has the advantages of large longitudinal and longitudinal rigidity, small deformation and good torsional resistance, which is suitable for modern transportation High-speed heavy load development requirements. At the same time, the interior of the box girder can well meet the layout of public facilities such as pipeline, so the prestressed continuous box girder bridge has been widely used. However, with the massive construction of prestressed continuous box girders, many problems have arisen. This paper will discuss the causes of prestressed continuous box girder web cracks and its reinforcement.