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对德国4种干砂试样进行了共振柱与弯曲元对比试验，旨在分析弯曲元法测定砂土最大剪切模量时存在问题和解决方法。研究表明：时域初达法判定的剪切波传播时间较其他方法具有更好的稳定性；弯曲元试验测定最大剪切模量输入电压脉冲频率的减小而减小，衰减程度因砂土类型而异，该影响随围压的增大而减弱；对比分析表明，弯曲元与共振柱试验测定的最大剪切模量具有良好的线性关系，对柏林砂和不伦瑞克砂，存在一个临界最大剪切模量，小于该临界值时，弯曲元测值大于共振柱测值，而大于该临界值时，前者小于后者，两者差值随土样刚度增大而增大。对比研究指出，弯曲元试验尽可能采用合适高频脉冲电压作为激发电压，实践中应事先与共振柱试验进行对比。“,”The problems and solutions of applying the bender element method to determine the maximum shear modulus （Gmax） of sand are investigated by conducting resonant column （RC） and bender element （BE） tests on four dry sands obtained from Germany. The study indicates that the start-to-start method is more reliable to identify the time of shear wave propagation in specimens compared to other methods. In BE tests, the excitation frequency of input waves has influence on the tested Gmax, and this influence is dependent on soil types and reduced by increasing confining pressure. A comparison between RC and BE tests shows that Gmax by both methods may be well expressed as a linear equation; for the Berlin sand and Braunschweig coarse sand, there exists a threshold Gmax below which Gmax by BE tests （Gmax （BE）） is greater than that by RC tests （Gmax （RC））, however beyond which the Gmax （BE） is smaller than Gmax （RC） and the distance between both increases with increasing stiffness soil. In practice, it is suggested that the input voltage with proper high frequency is preferred for BE tests, as compared with RC tests.