中部桥梁爆破拆除对相邻两侧桥梁下部结构安全性影响分析

Analysis of influence of central bridge demolition blasting on safety of lower structure at two adjacent sides of the bridge

在磨滩河大桥中部石拱桥的爆破拆除工程中,为有效地保护好两侧紧邻桥梁下部结构安全,对相邻桥梁下部结构采用了挡墙保护措施,并验算了最不利情况下挡墙抗滑稳定性、抗倾覆稳定性及抗破坏稳定性,顺利实现爆破拆除。

During demolition blasting engineering of the central stone arch bridge of the Moran River Bridge, in order to protect the safety of lower structures ad- jacent to the two sides of the bridge, the retailing wall protection measures were adopt- ed for the lower structures adjacent to the bridge ,the retaining wall anti-slide stabili- ty, anti-overturning stability and resistance to damage stability under the most adverse conditions were calculated and checked, and blasting demolition was realized success- fully.