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在工业与民用建筑及交通工程地基中,做《规范》下限规定的有限数量桩的静载试验不能完全反应管桩基础在不同地质条件下的承载性能.增加试验桩数又需要耗费大量资金和时间.为缓解上述矛盾,用量纲分析法,推导了相似判据,并应用到管桩模型实验当中,获得了模型实验的相关参数;通过材料配合比实验优化了模型管桩材料配合比;发明了一套模型管桩钢模板及加载装置,并阐述了使用方法;将所有室内实验成果应用于长沙市开福区学府华庭建设小区管桩基础项目当中,进行了管桩模型实验,获得了模型管桩基础荷载-沉降曲线,并由此推导了现场管桩试验的承载力;对模型管桩的侧阻和端阻进行了测试和讨论,效果良好,期望能给工程界参考并得到推广.
In industrial and civil buildings and traffic engineering foundation, the static load test of a limited number of piles that meet the lower specification requirements can not fully reflect the bearing capacity of the pile foundation under different geological conditions. Increasing the number of test piles requires a large amount of capital and Time.In order to alleviate the above contradiction, the similarity criterion was deduced by using the dimensional analysis method, and applied to the experiment of the pipe pile model, the relevant parameters of the model experiment were obtained. The material pipe mixing ratio was optimized by the material mix ratio experiment. A set of model pipe pile steel template and loading device, and describes the use of methods; all indoor experimental results are applied to Changsha Kaifu District School District Court building sub-pipe pile foundation project, the pipe pile model experiments, obtained Model pile foundation load-settlement curve, and deduced the bearing capacity of on-site pipe pile test. The lateral resistance and the end resistance of the model pipe pile were tested and discussed with good results. The expectation was given to the engineering community for reference and popularized .