国家地震局工程力学研究所同美国加州大学(Davis),自1981年以来,就砂土液化问题,进行了合作研究,其间,1981和1982年在天津市区进行了现场试验,包括标准贯入试验,静力触探试验和剪切波速测定,同时也采取了土样,在双方试验室进行了物理力学试验;1984年又在营口市区进行了一次类似的试验。根据取得的试验结果,验证了以标准贯入试验N值为判据的我国建筑抗震设计规范液化判别式,同时也探讨了 The Institute of Engineering Mechanics of the State Seismological Bureau and the University of California (Davis) have conducted cooperative research on sand liquefaction since 1981. During this period, field tests were conducted in Tianjin city in 1981 and 1982, including standard penetration. Tests, static penetrating test and shear wave velocity measurements, as well as soil samples were taken. Physical and mechanical tests were performed in both laboratories. In 1984, a similar test was conducted in Yingkou city. Based on the test results obtained, the liquefaction discriminant for China’s building seismic design code based on the criterion of standard penetration test N was verified.