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拉盘式桥墩近年来在我国各铁路线上采用很多,但是这种桥墩的应力分布和合理形状问题,还没有进行过足够的研究。本文提供了一些我们所做的试验研究资料。我们做过平面的光弹性模型试验,也做了立体的“冻结法光弹性模型试验。另外,又做了1/20比例尺的石膏模型试验,用电阻应变仪测得表面应力分布。三种不同方法的试验结果大体上是一致的。根据试验结果的分析我们提出了一点初步建议,供有关方面参考。关于托盘式桥墩及顶帽的应力分布问题,今后还需要继续研究。
In recent years, the pull-disc piers have adopted a lot of railway lines in our country. However, the stress distribution and reasonable shape of the piers have not been studied sufficiently. This article provides some of the experimental research we have done. We have done a flat photoelastic model test, also made a three-dimensional "freeze-method photoelastic model test. In addition, they did a 1/20 scale gypsum model test, measured by the resistance strain gauges surface stress distribution. Three different According to the analysis of the test results, we put forward some preliminary suggestions for the reference of the relevant parties.As to the stress distribution of the bridge piers and the top hat, it is necessary to continue to study in the future.