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作者:: 郝云鹏¹; 冯利飞²; 毛晨曦^1; (1.中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨 150080; 2.大连理工大学建设工程学部,辽宁大连 116024)

Author(s):: HAO Yunpeng¹; FENG Lifei²; MAO Chenxi¹; (1.Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)(2.Dalian University of Technology Faculty of Infrastructure Engineering,Dalian 116024,Liaoning,China)

Keywords:: telecommunication cabinet and equipment; shaking table test; damage characteristics; communication function

摘要:: 以振动台试验为手段,研究一种典型通信机柜的抗震性能,同时为后续该机柜的准确数值模拟和地震易损性分析提供基础。考虑机柜参数的随机性和地震动输入的随机性对机柜地震反应的影响,试验中对3台同样规格尺寸的机柜和内部设备共输入9条地震动; 逐渐增大地震动幅值,直至机柜严重破坏,观察机柜和设备在地震作用过程中的破坏模式和特征,记录其地震反应。试验结果表明:各机柜在PGA达到0.4～0.5 g后开始出现损伤,表现为机柜内钢框架的立柱与底部横梁间的焊缝开裂; 在PGA达到0.9 g后,机柜内底部和顶部横梁也开始出现弯曲; 试验结束后,机柜完全破坏,不可再使用。最后,建议为提升机柜的抗震性能,应严格控制焊缝质量。

Abstract:: A commonly used telecommunication cabinet in base transceiver stations was investigated in this study through shaking table tests.The tests results can be used to calibrate numerical model of the cabinets in following works.Shaking table tests for three cabinets(with telecommunication equipment in it)with the same specification were carried out.To consider the influence of randomness of earthquakes on seismic responses of the cabinets,three various earthquake records were input for each cabinet.The intensity of the earthquakes was increased until the cabinets were completely damaged.The damage mode and characteristics of the cabinets during the tests were observed and the seismic responses of the cabinets were recorded.The test results indicated that the cabinets begin to damage when the PGA of an earthquake reached 0.4～0.5 g.Weld between columns and beams of the steel frame in the cabinet began to crack at this moment.When the PGA of an earthquake reached 0.9 g,the beams at the bottom and top plates began to buckle.After the tests,the cabinets were totally damaged and could not be used.Through the tests,the seismic damage characteristics of this typical communication cabinet were known,and suggestions for improving the seismic performance of the cabinet were put forward.