高原地区卧式金属储罐热应力规律及解耦测试方法研究  

tudy on thermal stress law and decoupling test method of industrial tank in plateau area

作　　者：王少康 周帆 武金模 朱玉成 WANG Shaokang;ZHOU Fan;WU Jinmo;ZHU Yucheng(College of Civil Engineering,Anhui Jianzhu University,Hefei Anhui 230601,China;不详)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]清华大学合肥公共安全研究院,安徽合肥230601

出　　处：《工业安全与环保》2024年第8期43-49,共7页Industrial Safety and Environmental Protection

基　　金：安徽省自然科学基金(2108085QE242)。

摘　　要：为研究卧式金属储罐在高原地区环境下的热应力分布规律,通过构建罐体热-力耦合模型并获取西宁市某5 d气象数据进行仿真模拟。研究了罐体外壁热应力分布特征,分析了罐体在设定工况下的热应力分布规律并针对罐体热应力提出一种通过S域信号变换的解耦测试方法且对其数值验证。结果表明:在西宁气象环境下,罐体外壁于第3天下午2点达到最高温度为95.9℃,该天下午4点在罐体底面两固定点处产生极值应力1 878.9 MPa;罐体在太阳辐射区和非辐射区分界处存在明显温度梯度和较大热应力;对于所提出的S域解耦测试方法,罐体应力的耦合与解耦数据均方根误差值较小,该方法可根据环境温度、辐射单一工况模拟结果计算得到环境温度-辐射复合环境下的模拟测试结果。In order to study the mechanism of thermal stress distribution of horizontal metal storage tank under the environment of plateau area,a model of tank was constructed and five days of historical meteorological data of Xining City were obtained for simulation.The characteristics of thermal stress distribution on the outer wall of the tank were studied,the thermal stress distribution law of the tank was analyzed under the given working conditions,and a deco upling test method through S-domain signal transformation was proposed and numerically verified for the thermal stress of the tank.The results show that under the meteorological environment of Xining,the outer wall of the tank re ached a maximum temperature of 95.9°C at 2:00 p.m on the third day,and the extreme stress of 1878.9 MPa is gen erated at the two fixed points on the bottom surface of the tank body at 4:00 p.m on the same day;there are obvious temperature gradients and large thermal stresses at the demarcation between the solar radiation area and the non-radi ation area of the tank body;for the S-domain decoupling test method,the coupling and decoupling data root mean square error values of the tank stresses are small,the method can be calculated based on the simulation results of the single working condition of the ambient temperature and radiation to obtain the simulation test results in the composite environment of the ambient temperature and radiation.

关 键 词：金属储罐 高原地区 热应力 解耦测试方法 

分 类 号：TQ053.2[化学工程]