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管柱基础是世界上最新的深基础施工方法。我国首创地成功地在武汉长江大桥釆用后,很快得到了广泛的应用。但大型管柱在深的复盖层和不同地质条件下进行震动下沉时,管壁中应力分布状态,还不清楚,因而用作设计依据的资料,也个够充分和可靠。为了解决这个问题,我院桥隧系同其他协作单位,在郑州黄河大桥工程进行中,对大型管柱(φ3.6M)在深复盖层下震动下沉时,管壁应力分布状态,进行了有系统的试验和研究,发现了一些问题,得到了一些成果,对今后大型管柱设计及进一步的应力试验和研究,打下了有益的和良好的基础。本文就是这次试验研究的中间报告。
The foundation of the column is the newest deep foundation construction method in the world. China’s first successful in Wuhan Yangtze River Bridge preclude the use of, has been widely used. However, it is unclear whether the stress distribution in the pipe wall when the large pipe string vibrates and sinks under the deep overburden and under different geological conditions. Therefore, the information used as design basis is also sufficient and reliable. In order to solve this problem, our hospital bridge and tunnel cooperated with other cooperating units during the project of Zhengzhou Yellow River Bridge. When the large pipe string (φ3.6M) vibrated and sunk under the deep cover, the stress distribution of the pipe wall was carried out Systematic experiments and research have been carried out. Some problems have been found and some achievements have been obtained. This has laid a good foundation for the future design of large-scale pipelines and further stress tests and studies. This article is the middle of this pilot study.