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大桥支撑系的合理计算是目前还没有得到解决的问题。我们为此选定武汉长江大桥[1]的断面支撑系为例进行了模型试验。模型是用有机玻璃作成的。用电阻丝测得模型在荷载下的各杆件的应力,并对实验结果进行了分析研究。实验结果证明,在竖直荷载作用下,断面支撑系杆件所受内力很大,因此,对断面支撑系的计算问题,提出了初步意见,并对今后研究工作,提出建议。
The reasonable calculation of the bridge support system is a problem that has not been solved so far. We chose the Wuhan Yangtze River Bridge [1] section support system as an example to conduct a model test. The model is made of plexiglass. The resistance of the model under load was measured by resistance wire, and the experimental results were analyzed. The experimental results show that under the vertical load, the internal forces of the support members of the section support system are very large. Therefore, preliminary opinions are put forward on the calculation of the support system of the section, and suggestions are put forward for the future research work.