谭灵,唐献述
TAN Ling,TANG Xian shu (Engineering Institute of Engineering Corps,University of Science And Technology of PLA,Nanjing 210007,China)

• 1:解放军理工大学工程兵工程学院
• 2:解放军理工大学工程兵工程学院 南京210007
• 3:南京210007

摘要(Abstract)：

跨线人行天桥是一特殊的预应力拱形构筑物 ,用控制爆破法拆除。根据待爆破部分的结构和条件 ,具体设计布孔和装药结构。用防护棚和铺设湿草袋的方法阻挡飞石。用车道板和袋装土保护浅埋管线以及迎宾大道的路面。整个工程 ,包括搭建防护物、铺设车道板、装药爆破、清碴等 ,仅用 13h就全部完成。
The overhead crossing bridge,a special pre stressed arched construction,was demolished by controlled blasting method.According to the structure and conditions of the parts to be blasted,the concrete blasthole pattern and charging structure were worked out.The protection shed and covered wet matting were used for stopping of the flying rock.The shallow buried pipes and cables and the pavement of the Guest met Highway were protected by use of the lane safeguarding plates and packaged earth.The whole project including construction of protection matters,laying of the lane safeguarding plates,charging and blasting,cleaning of broken stones and others was completed for only 13 hours.

关键词(KeyWords)： 控制爆破;人行天桥;拆除;预应力拱桥
Controlled blasting; Overhead crossing bridge; Demolition; Pre stressed arched bridge

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 谭灵,唐献述
TAN Ling,TANG Xian shu (Engineering Institute of Engineering Corps,University of Science And Technology of PLA,Nanjing 210007,China)

参考文献(References)：

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