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本文描述三根直径1.2m、长12m穿越无粘性土而进入坚硬的砂质粘土的钻孔灌注桩的双向载荷试验。施加于桩顶的最大载荷为竖向2400KN,侧向160KN,弯矩3120KNm,相当于工作荷载的二倍,试验时量测了桩顶沉降、变位和转角。试验成果说明了一个有趣的情况,即就短时期而言,当桩处于设计荷载时,桩的竖向位移对其侧向性能并无明显的影响。
This paper describes the two-way load test of three bored cast-in-place piles with a diameter of 1.2m and a length of 12m that pass through the non-cohesive soil and enter the hard sandy clay. The maximum load applied to the top of the pile is 2400 KN in the vertical direction, 160 KN in the lateral direction, and 3120 KNm in the bending moment, which is equivalent to twice the working load. The settlement, displacement and rotation angle of the pile top were measured during the test. The experimental results illustrate an interesting situation. For a short period of time, when the pile is under design load, the vertical displacement of the pile has no obvious effect on its lateral performance.