旧水泥路面共振破碎技术的施工环境效应研究

Research on Construction Environmental Effects of Resonance Crushing Technology for Old Cement Pavement

摘要:

共振破碎技术作为面向旧路面改造加铺的处治技术，将旧混凝土板块充分破碎形成紧密嵌挤、具有较高承载力的共振破碎层。但共振破碎技术的环境效应尚不明确。以上海和赣州多条由共振破碎技术改建加铺的旧混凝土路面为依托，对共振破碎施工的振动、噪声等环境效应进行研究，明晰其分布特征与衰减规律，并提出了相应的防护措施。结果表明：在距离振源0~5 m范围内共振破碎造成的环境振动的影响达到最大，距离振源15 m外时环境振动带来的影响可以忽略不计。在共振破碎施工噪声源20 m范围内，环境噪声达到100 dB以上，会对人体听力造成严重损伤；在100 m范围内，噪声值达到85 dB以上，影响沿线居民的正常生活；100 m外为昼间环境噪声可接受范围；300 m外为夜间环境噪声的可接受范围。

Abstract:

As a treatment technology for the reconstruction and overlaying of old pavement, the resonance crushing technology is used to fully crush the old concrete slabs to form a resonance crushed layer with the tight embedded and high bearing capacity. However, the environmental effects of resonance crushing technology are not yet clear. Relying on the old concrete pavements reconstructed and overlaid by the resonance crushing technology in Shanghai and Ganzhou, the environmental effects of vibration and noise during the resonance crushing construction are studied to clarify the distribution characteristics and attenuation laws of the effects, and the corresponding protective measures are proposed. The results show that the impact of environmental vibration caused by resonance crushing reaches its maximum within a range of 0~5 m from the vibration source, and the impact caused by the environmental vibration can be ignored at 15 m away from the vibration source. Within a 20 m range of resonance crushing construction noise source, the environmental noise will reach over 100 dB, which will cause serious damage to human hearing. Within a 100 m range, the noise level reaches over 85 dB, which affects the normal life of residents along the route. The environmental noise outside 100 m during the day can be accepted, and the environmental noise outside 300 m at night can be accepted.