In situ test is the most reliable and objective way to obtain pile design parameters and realize pile mechanical property. During the marine pile static load test, strain measurement may be carried out simultaneously through the electric resistance strain chip mounted on steel pipe pile. The strain values of axial forces of piles in different strata may be measured. By analyzing the law of load transmission between pile and soil layer, the following can be obtained, I.e. The pile side frictional resistances, pile tip bearing capacities and flexural moment distribution of pile under horizontal load in different strata.%原位试验是获取桩基设计参数和了解桩基力学行为最客观、可靠的方法.在进行海上桩基静载试验时,通过预先设在钢管桩上的电阻应变片进行应变测量,获得桩身在各土层中应变的变化,从而获得桩身轴力的变化、分析桩-土间的荷载传递规律,测定各土层的桩侧摩阻力、桩端阻力和水平荷载作用下桩身弯矩的分布规律.
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