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强震区桥梁墩台岸坡往往在地震作用下产生坍塌滑坡,造成墩台后倾滑移以及台后路面坍塌,其导致交通线通道中断。文章介绍一种桥台墩台减载支撑加固技术,用于解决桥梁岸坡滑移问题,从理论上研究了墩台震动破坏机制,得出桥台岸坡滑动面应变速度以及与滑动线夹角,以及作用于岸坡外力做功和塑性流动消耗能量,依据能量准则推导出岸坡最大地震主动土压力及所对应滑动面倾角,最后建立了此技术相应计算方法、设计方法。
In the strong earthquake area, the abutment and bank slope of bridge abutment often produce collapses and landslides under the earthquake, resulting in the abutment slip and the road surface collapses which lead to the interruption of the traffic lane. In this paper, a kind of abutment abutment abutment reinforcement technology is introduced to solve the problem of bank slope slip. The mechanism of pier abutment vibration is studied in theory. The relationship between the strain rate of slip surface of abutment abutment and the sliding clamp Angle and the acting energy and plastic flow energy of the external forces acting on the bank. According to the energy criterion, the maximum seismic active earth pressure on the bank and the corresponding slip plane inclination are deduced. Finally, the corresponding calculation methods and design methods of this technology are established.