超高薄壁桥墩爆破拆除  

Explosive Demolition of Ultrahigh and Thin Shelled Pier Building

作　　者：李本平[1] 金正勇[1] 

机构地区：[1]第二炮兵指挥学院工程系,武汉430012

出　　处：《爆破》2013年第1期86-89,共4页Blasting

摘　　要：介绍了复杂环境条件下钢筋混凝土超高薄壁桥墩爆破拆除的实例。对原地坍塌、折叠爆破和定向倒塌三种爆破方案进行了分析、比较。爆破方案的确定应在认真分析其结构特点的基础上,根据现场实际情况,结合质量、工期及特殊要求综合确定。对于超高薄壁筒体结构,可采用分次爆破的方式,在保证结构安全的情况下,预先爆破倒塌方向的墙体,降低其整体刚度,确保顺利倒塌。A practical explosiye demolition of ultrahigh and thin-shelled pier structure with reinforced concrete in complex environment was introduced. Three blasting schemes, such as vertical collapse blasting, folding blasting and directional blasting, were analyzed and compared. The pier structure feature should be highly considered to determine the scheme, combined with quality, project duration and some other special requirements. The method of multiple blasting for ultrahigh and thin-shelled tubular structure, by reducing the overall rigidity and preliminary demolishing the walls in the dumping direction, can keep the collapse right under safe structure condition.

关 键 词：超高建筑 薄壁结构 桥墩 爆破拆除 

分 类 号：TU746.5[建筑科学—建筑技术科学]