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随着现代桥梁跨度和宽度的不断增加,剪力滞效应对带翼缘板的T梁和箱梁的影响日益得到工程人员的重视。因为剪力滞效应的存在会引起T梁和箱梁截面的局部应力集中,造成梁的裂缝和局部破坏。而且由于剪力滞效应的存在,桥梁的内力和挠度发生改变,影响桥梁的正常使用,甚致造成桥梁结构破坏。因此对剪力滞效应的认识与研究具有重要的现实意义和实用价值。
With the increasing span and width of modern bridges, the effect of shear lag effect on T-beams and box girders with flange plates is increasingly valued by engineers. Because of the existence of shear lag effect will cause the T beam and box girder section of the local stress concentration, resulting in the beam crack and local damage. Moreover, due to the existence of shear lag effect, the internal force and deflection of the bridge change, affecting the normal use of the bridge, it even caused the destruction of the bridge structure. Therefore, it is of great practical and practical significance to understand and study shear lag effect.