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深层混凝土过渡板处治桥头跳车主要是通过深置搭板来减小近桥头处搭板下的地基应力,从而有效地使沉降平滑过渡到搭板上,以避免桥头的不均匀沉降。通过将深层混凝土过渡板简化为在Winkler地基上双向受力的弹性地基板模型,结合弹性地基梁理论,推导了均布荷载作用下具有特定边界条件的弹性地基板挠度曲线及板底地基反力的解析解。通过理论与实测数据的分析发现近桥台处深层过渡板下方土体压力降低显著,有利于桥头沉降差的减小。
Deep concrete transition plate treatment Bridge head bump is mainly through the depth of the board to reduce the bridge head near the slab under the ground stress, so as to effectively make the transition to a smooth transition to the slab, in order to avoid uneven subsidence of the bridge. Through the simplification of the deep concrete transition plate to the elastic foundation plate model with bidirectional stress on the Winkler foundation and the elastic foundation beam theory, the deflection curves of the elastic foundation plate and the reaction force of the bottom soil foundation under the uniform load are deduced. Analytical solution. Through the analysis of the theoretical and experimental data, it is found that the soil pressure beneath the deep transitional plate near the abutment decreases obviously, which is beneficial to the decrease of the settlement difference of bridgehead.