【摘要】 通过对旧水泥混凝土路面冲击破碎的动力响应特性的分析,在旧水泥混凝土路面改建工程中,采用冲击破碎方法使原路面结构沉降趋于稳定。利用三维叠层有限元建立路面动力模型,模拟新旧路面之间的动力耦合现象,以GB722-86和DIN4150中的标准安全振速峰值为参考标准,计算出道路分幅两侧的路面结构振动的速度和振幅。由此给出路面和其它结构物的安全振动速度和相应确保安全的处理措施和界定标准。更多还原

【Abstract】 The vibration resonance character is analyzed on impacting old PCC pavement to break it into smaller pieces and to make the settlement stabilized during the pavement rehabilitation process.A pavement structure dynamic model is founded by 3-D overlay FEM(finite element method).The model can simulate the dynamic coupling phenomenon between old and new pavement.According to GB722-86 and DIN4150 standard safety vibration velocity peak value,dual carriageway pavement structure’s vibration velocity and amplitude are calculated.The pavement and other construction’s safety vibration velocity are concluded.And safety measure and decision standard are suggested.更多还原