【摘要】 <正> 完成了立式直管、卧式直管和立式U型管三种典型热交换器的地震响应分析和试验。对U型管管束和卧式直管管束做了模态试验。在有水和无水条件下进行了该三台热交换器的地震响应试验,测得了热交换器中各重要部件的加速度、位移和应变响应值。采用管-梁线性有限元数学模型计算了结构自振特性和地震响应。试验数据和计算结果符合得很好,从更多还原

【Abstract】 Seismic response analysis and tests for three typical types of heat exchangers, i. e. vertical straight tube one, horizontal straight tube one and vertical U-tube one have been done. Additionally, modal tests have been carried out for horizontal tube bundle and U-tube bundle. Acceleration, displacement and strain response from seismic tests for all main parts of the three types of heat exchangers were measured under both conditions with and without water. Structural free vibration characterization and seismic response are calculated by means of tube-beam mathematical model of finite element method. Calculation results fairly meet test data. Thus effectiveness of the mathematical model is further verified.更多还原