徐鹏飞;盖四海;张英才;
XU Peng-fei;GAI Si-hai;ZHANG Ying-cai;School of Civil Engineering,Henan Polytechnic University;Henan Schindler Blasting Co.,Ltd.;

• 1:河南理工大学土木工程学院
• 2:河南迅达爆破有限公司

摘要(Abstract)：

连霍高速公路路面拓宽,需要对洛阳至三门峡段原有跨线桥进行拆除爆破。跨线桥为门式结构,主要承重构件内钢筋布置密集,为了防止出现"爆而不塌"的现象,制定了分块解体拆除爆破和切割拆除爆破两种切实可行的爆破方案并对其进行了受力情况分析。通过比较,采用聚能切割钢筋和钻孔爆破相结合的拆除爆破技术实施爆破并采取相应的预处理措施,在严密的安全防护措施下,拆除爆破取得了理想的效果,可为类似工程提供参考。
The original bridge had to be removed by blasting due to the road to be extended from Luoyang to Sanmenxia in Lianhuo highway.It's a bridge of door structure which containing intensive reinforcement in the main bearing component.In order to prevent the phenomenon of "blasting and not collapse",two feasible blasting programs of block disintergration and cutting blasting were made and the stress distribution was analyzed.Comparing with the two programs,the technology which combination of cutting by collecting energy and drilling blasting was used.Because of making the corresponding pretreatment measures and strict safety protection measures,an ideal blasting effect was achieved.It provided a reference for the similar projects.

关键词(KeyWords)： 跨线桥;控制爆破;聚能切割;受力分析;安全措施
Flyover;Control blasting;Cutting by collecting energy;Stress analysis;Security measures

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 徐鹏飞;盖四海;张英才;
XU Peng-fei;GAI Si-hai;ZHANG Ying-cai;School of Civil Engineering,Henan Polytechnic University;Henan Schindler Blasting Co.,Ltd.;

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