CAJ | 학술논문

介绍了采用控制爆破技术成功拆除钢筋混凝土双曲拱桥的典型实例. 该桥采用定向倒塌爆破法 ,根据大桥的特点 ,合理布置炮孔并计算单孔装药量 ,搭设钻孔操作平台 ,采用孔内外延时起爆网路 ,设计不同的起爆顺序成功实现了桥墩、墩帽、立墙和拱脚、拱顶的依次起爆 ,同时做好爆破安全防护措施 ,使爆破飞石及爆破振速得到有效控制 ,取得了理想的爆破效果.
개소료채용공제폭파기술성공탁제강근혼응토쌍곡공교적전형실례. 해교채용정향도탑폭파법 ,근거대교적특점 ,합리포치포공병계산단공장약량 ,탑설찬공조작평태 ,채용공내외연시기폭망로 ,설계불동적기폭순서성공실현료교돈、돈모、립장화공각、공정적의차기폭 ,동시주호폭파안전방호조시 ,사폭파비석급폭파진속득도유효공제 ,취득료이상적폭파효과.
The typical example was introduced that reinforced concrete double curved arch bridge was demolished successfully by controlled blasting technology. Directional collapse blasting method was ap-plied to the bridge. According to the characteristics of the bridge ,blasting holes were arranged reasonable-ly and the single hole charge weight was calculated ,a drilling operation platform was set up ,inside and outside holes millisecond blasting network was used. Pier ,pier cap ,vertical wall ,arch foot and arch were blasted successfully.While blasting safety protection measures were well done ,the blasting flying rocks and vibration velocity were effectively controlled ,an ideal blasting result was achieved .