不同轨道结构形式下地铁隧道振动传递特性试验研究  

Experimental Research of Vibration Transmission Characteristics of Subway Tunnels with Different Track Structures

作　　者：吴宝游 宋立忠 艾永飞 刘全民 刘天宇 WU Baoyou;SONG Lizhong;AI Yongfei;LIU Quanmin;LIU Tianyu(China Railway Electrification Bureau Group Co.,Ltd.,Beijing 100036,China;MOE Engineering Research Centre of Railway Environmental Vibration and Noise,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]中铁电气化局集团有限公司,北京100036 [2]华东交通大学铁路环境振动与噪声教育部工程研究中心,南昌330013

出　　处：《噪声与振动控制》2022年第2期124-127,142,共5页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(52008169、52068030、U1934208);江西省主要学科学术和技术带头人资助项目(20194BCJ22009)。

摘　　要：为探明不同轨道结构形式下地铁隧道的振动传递特性及减振效果,以南昌地铁3号线为工程背景,分别选取普通板式轨道地段、双层非线性减振扣件轨道地段、隔离式减振垫轨道地段,开展现场锤击试验。基于现场测试结果,研究不同轨道结构形式下地铁隧道的振动传递特性,并分析不同轨道结构的减振效果。结果表明:隔离式减振垫轨道的减振效果最佳,其次是双层非线性减振扣件轨道,普通板式轨道减振效果最差;双层非线性减振扣件轨道在80 Hz~170 Hz范围内表现出良好的减振特性,隔离式减振垫轨道则在30 Hz以上频段均表现出显著的减振特性;与普通板式轨道相比,双层非线性减振扣件轨道和隔离式减振垫轨道的减振效果分别约为5.6 dB和10 dB。The vibration transmission characteristics and vibration reduction effects of subway tunnels with different track structures are investigated. Taking Nanchang Metro Line 3 as the engineering background, and selecting the common slab track section, the double-layer nonlinear fastener track section and the isolated damping pad track section, the field hammer excitation tests are carried out respectively. Based on the field test results, the vibration transmission characteristics of subway tunnels with different track structures are studied, and the vibration reduction effects of different track structures are analyzed. The results show that the isolated damping pad track has the best vibration reduction effect, followed by the double-layer nonlinear fastener track and the common slab track. The double-layer nonlinear fastener track shows good vibration reduction characteristics in the range of 80 Hz-170 Hz, while the isolated damping pad track shows significant vibration reduction characteristics in the frequency band above 30 Hz. Compared with the common slab track, the vibration reduction effects of the double-layer nonlinear fastener track and the isolated damping pad track are about 5.6 dB and 10 dB respectively.

关 键 词：振动与波 振动传递特性 减振效果 轨道结构 锤击试验 地铁隧道 

分 类 号：O329[理学—一般力学与力学基础] U231[理学—力学]