箱梁临时支座拆除技术  

Demolition Technology of the Temporary Supports for Box Girder

作　　者：金勇 

机构地区：[1]绍兴安盛爆破工程有限公司,浙江省绍兴市312000

出　　处：《煤矿爆破》2012年第3期33-35,共3页Coal Mine Blasting

摘　　要：根据箱梁临时支座的结构特点,分析硫磺砂浆热熔法与预留炮孔爆破法拆除箱梁临时支座的技术特点。硫磺砂浆热熔法效果不理想,耗费人力物力较多;选用控制爆破法拆除方案,能够保证箱梁结构完整,不被破坏,临时支座结构破碎效果好,拆除周期短。Based on the structure characteristic of the temporary supports of box girder, the technology characteristic of the sulfer-mortar thermal-smelt method and the blasting method with pre-molded hole are analyzed. The sulfer-mortar thermal-smelt method is not so good which consumes more manpower and material resources, while control blasting demolition method can ensure the box girder structure integrity not being destroyed and the fragmentation effect of temporary supports is satisfactory and the demolition cycle is short.

关 键 词：临时支座 爆破拆除 微差爆破 箱梁 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]