摘要
浅埋地铁下穿越引起建筑物的振动噪声已成为大城市严重的环境污染。针对上海地区某受浅埋地铁下穿越影响的建筑场地,通过现场实测,分析浅埋地铁的振动传播特性。现场测试表明,振动超限的测点大多靠近地铁站点,在早晚高峰时段超限尤为明显。地下连续墙对振动具有明显的阻隔作用,地下连续墙以外测点位置的分频最大振级通常分布在30～50 dB。研究所得结论对于其他类似工程具有一定的参考价值。
The vibration induced by shallow embedded metro becomes seriously environmental pollution.For a construction site influenced by a shallow embedded metro in Shanghai city,field testing is applied to study the vibration characters induced by metro.The measuring results show that most positions exceeding the vibration standard are adjacent to the metro station,especially in morning and evening rush hours.It is also shown that the diaphragm wall has an obvious barrier effect of the vibration.The frequency maximum magnitude of vibration outside the diaphragm wall are usually in the range of 30~50 dB.
出处
《结构工程师》
2011年第3期46-50,共5页
Structural Engineers
基金
上海市科技攻关计划项目资助(09231200900)
关键词
浅埋地铁
振动特性
分频最大振级
阻隔效应
shallow embedded metro
vibration characters
frequency maximum magnitude of vibration
barrier effect
