双壳体核电厂空间减震结构的竖向动力试验研究  

Vertical dynamic test research on space damping structure of double shell nuclear power plant

作　　者：刘文光[1] 王宇端 张强[1] LIU Wenguang;WANG Yuduan;ZHANG Qiang(School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学力学与工程科学学院,上海200444

出　　处：《地震工程与工程振动》2024年第1期158-167,共10页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51778355)。

摘　　要：为降低核电厂内安全壳的竖向加速度,提出了一种双壳体空间减震结构,基于该结构的力学特性建立了简化三质点三自由度动力模型,进一步给出了结构响应传递函数并进行了参数分析,明确了结构质量比、阻尼比和频率比对结构竖向地震响应的影响规律,完成了双壳体空间减震结构的缩尺振动台动力试验。结果表明:双壳体空间减震结构可减小内安全壳的竖向加速度,减震率为12.23%~27.84%。双壳体空间减震结构的振动台试验响应结果与理论计算值吻合较好,验证了所提出的双壳体空间减震结构简化模型的准确性以及双壳体空间减震系统的有效性。A double shell space damping structure is introduced to reduce the vertical accelerations of the containment in the nuclear power plant.Based on the mechanical characteristics of the structure,a simplified three particle and three degree of freedom dynamic model is established,the structural response transfer functions are further given and the parameter analysis was conducted.The influence rules of the structural mass ratios,damping ratios and frequency ratios on the vertical response of the structure are clarified.The scale shaking table dynamic test of the double shell space damping structure is completed.The test results show that the double shell space damping structure can reduce the vertical accelerations of the inner containment,and the damping ratios are 12.23%~27.84%.The theoretical calculation results are in good agreement with the experimental results.The double shell space damping structure can effectively reduce the vertical acceleration response of the containment in the nuclear power plant.

关 键 词：双壳体核电厂 空间减震 传递函数 振动台试验 竖向减震 

分 类 号：TU352.1[建筑科学—结构工程]