【作者】 王元清； 王综轶； 杜新喜； 衡月昆； 宗亮； 秦中华；

【Author】 WANG Yuan-qing;WANG Zong-yi;DU Xin-xi;HENG Yue-kun;ZONG Liang;QIN Zhong-hua;Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering, Tsinghua University;School of Civil and Architectural Engineering, Wuhan University;Institute of High Energy Physics, CAS;

【机构】 清华大学土木工程安全与耐久教育部重点实验室； 武汉大学土木建筑工程学院； 中国科学院高能物理研究所；

【摘要】 江门中微子实验是继大亚湾中微子实验之后的第二期工程,该探测器规模巨大,直径将达35.5 m。本文针对江门中微子探测器的设计工况和要求,提出了有机玻璃球+双层不锈钢网壳支撑的方案,完成了结构的初步设计,并且在此基础上对杆件截面、撑杆布置等方面进行了优化。通过ABAQUS软件进行的数值分析可知,优化方案可降低有机玻璃球的应力、撑杆的轴力和结构的位移,这对于结构非常有利。提升内液面的高度、升高温度均能减小有机玻璃的应力;节点失效对于结构影响不大,而地震作用导致支柱过大的应力可以通过增加斜向撑杆来降低。更多还原

【Abstract】 After the Daya Bay neutrino experiment, the Jiangmen neutrino experiment is the second phase of the project to detect neutrinos. The scale of the Jiangmen neutrino central detector is large and its diameter will reach 35.5 m. This paper has proposed the scheme of an acrylic ball supported by a double-layer stainless steel latticed shell, based on the design conditions and requirements. The preliminary design of this scheme has been conducted and the optimization about the sections of components and distribution of braces has been implemented. From the numerical analysis with ABAQUS, it is known that stresses on the acrylic ball, axial forces of braces and structural displacement of the optimized scheme are decreased, which is beneficial to the structure. Raising the liquid level inside the acrylic ball and elevating the temperature are capable of reducing the stress on the acrylic. Meanwhile, the joint invalidation has little influence on the structure and the seismic action can be resisted by adding diagonal braces.更多还原