波形钢腹板箱梁桥的腹板沿纵向具有褶皱效应,因此能够提高预应力的施加效率。为了明确所提高的预应力效应的程度,利用有限单元法对相同截面尺寸的波形钢腹板箱梁和混凝土腹板箱梁施加相同的预应力,对产生的轴向应力进行对比分析。结果表明:预应力引起的波形钢腹板箱梁轴向应力与混凝土腹板箱梁轴向应力的比值k和混凝土箱梁截面面积与波形钢腹板箱梁有效截面面积的比值η接近。 The web of the corrugated steel web box girder has a corrugation effect in the longitudinal direction, so that the application efficiency of the prestress can be increased. In order to clarify the extent of the increased prestressing effect, the same prestressing force was applied to the corrugated steel box girder and the concrete box girder of the same section size by finite element method, and the axial stress generated was compared and analyzed. The results show that the ratio of the axial stress of corrugated steel web box beam to the axial stress of concrete box girder and the ratio of the cross-sectional area of ​​concrete box girder to the effective cross-sectional area of ​​corrugated steel web box girder are close to each other.