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土工静力-动力液压三轴-扭转多功能剪切仪研发及应用
引用本文:栾茂田,郭莹,李木国,王静,王栋,崇金著.土工静力-动力液压三轴-扭转多功能剪切仪研发及应用[J].大连理工大学学报,2003,43(5):670-675.
作者姓名:栾茂田  郭莹  李木国  王静  王栋  崇金著
作者单位:大连理工大学,土木水利学院,辽宁,大连,116024;大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024
基金项目:国家自然科学基金资助项目(50179006),教育部跨世纪优秀人才培养计划研究基金资助项目(教技函[1999]2号).
摘    要:为模拟波浪荷载条件下土的动力变形与强度特性,研制开发了能够实施复杂应力路径试验的土工设备土工静力—动力液压三轴—扭转多功能剪切仪。该设备能够实现多种固结条件、多种静力与循环剪切的复杂应力路径试验,具有广泛的适用性。对设备研制与开发及技术参数确定中的若干具体问题进行了探讨,有关经验对于类似土工设备研制具有一定的参考价值。初步的试验结果表明:竖向—扭转双向耦合循环剪切试验能够较好地模拟主应力轴连续旋转的复杂应力路径条件;采用内置式的荷载传感器和微小位移传感器,能够较大地提高试验测量精度。

关 键 词:土工试验  土工静力—动力液压三轴—扭转多功能剪切仪  土动力变形  土体强度  土工设备  复杂应力路径
文章编号:1000-8608(2003)05-0670-06

Development and application of soil static and dynamic universal triaxial and torsional shear apparatus
Abstract:In order to simulate dynamic behavior of soils under transient or cyclic loading induced by earthquake shaking or ocean wave, the soil static and dynamic universal triaxial and torsional shear apparatus is designed. This apparatus can reproduce complex stress conditions and stress paths including continuous rotation of principal stress axes during cyclic loading and also can be used to perform various soil experimental tests of sands or clays under complex consolidation condition. Some key issues related to the determination of the overall technical properties and controlling parameters of this complicated testing system are discussed. The experience gained in the development of the system will be helpful to developing other types of new soil test devices.
Keywords:soil tests  universal triaxial and torsional shear apparatus  complex stress path  coupling shear
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