摘要
降强法与超载法相结合的地质力学模型综合法试验是研究高拱坝坝肩及坝基整体稳定性的有效途径,但降强法中的升温降强阶段所产生的附加温度场会对综合法试验的结果产生一定影响。以锦屏一级高拱坝地质力学模型为研究对象,采用数值模拟法研究附加温度场对综合法试验的影响,即运用ANSYS数值计算软件模拟了是否计入附加温度场两种方案。结果表明,附加温度场对综合法试验的坝体、坝肩位移影响的变化率分别为10.13%~16.54%、10.20%~10.99%、对应力影响变化率为0.57%~8.70%,对综合稳定安全度的影响很小,说明附加温度场对综合法模型试验结果的影响较小。
The geomechanical model test combined with the methods of strength reduction and overloading is an effective way to study the whole stability of high arch dam abutments and dam foundation.However,additional temperature field caused by the rise of temperature in strength reduction method has impact on the results of comprehensive method test.Taking the JinpingⅠ-level high arch dam geomechanical model for the research object,numerical simulation method was used to study the impact of additional temperature field on comprehensive method test.ANSYS software was used to simulate the two schemes,that is considering the additional temperature field or not.The results show that the percentage of impact of additional temperature field on the displacement of dam body is 10.13% -16.54%and that of dam abutment displacement is 10.20 % - 10.99%,the percentage of the impact on the stress is 0.57% - 8.70%;the impact on the comprehensive stability is very small,which indicates that the additional temperature field has little impact on the results of the comprehensive model test.
出处
《水电能源科学》
北大核心
2018年第3期80-82,75,共4页
Water Resources and Power
基金
国家重点研发计划(2016YFC0401908)
国家自然科学基金青年基金项目(51409179
51609163)
关键词
附加温度场
地质力学模型
综合法试验
ANSYS计算软件
additional temperature fields geomechanical models integrated tests ANSYS calculation software
