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结合北京市科委、规委联合下达的科研课题“桩基工程差异沉降分析” ,我院于 1999年在北京市西郊开展了一项大型的钻孔灌注群桩现场足尺试验 ,共完成了单桩、三桩、六桩 (桩长 10m ,桩径 0 4 0m)载荷试验各两组 ,并利用多种元件和仪器进行了多项目的观测 ,并获得了比较全面可靠的数据。通过这次试验的设计、施工、测试以及数据的整理分析这一完整研究过程 ,积累了一些有关大型桩基载荷试验的经验 ,希望对以后进行此类试验起到一定的借鉴作用。
Combined with the scientific research project jointly issued by Beijing Municipal Science and Technology Commission and the State Planning Commission, “Analysis of Differential Settlement of Pile Foundation Engineering”, our institute conducted a large-scale field full-scale test of bored pile groups in 1999 in the western suburbs of Beijing. A total of single pile, three pile, six pile (pile length 10m, pile diameter 0 40m) load test of two groups, and the use of a variety of components and instruments for multi-project observation and obtained more comprehensive and reliable data . Through the complete research process of the design, construction, testing and data analysis of the test, some experiences about the load test of the large pile foundation have been accumulated, hoping to make some reference for such tests in the future.