周祥磊,陈德志,罗鹏,李本伟,胡浩川,周应军,李克菲,陈晨

• 1:中钢集团武汉安全环保研究院有限公司

摘要(Abstract)：

针对在市区复杂环境下爆破拆除独塔单索面预应力斜拉桥,采用桥面原地坍塌爆破技术与主塔定向控制爆破技术相结合的手段成功爆破拆除金婺大桥。重点介绍大桥主塔、主墩和梁块的爆破参数、起爆网路以及安全防护措施。通过主塔钻孔预切割、桥面机械破除的预处理方式,采用孔内、孔外相结合的延时起爆技术,并采取立体防护措施和混合缓冲垫层,使大桥解体充分,取得了良好的爆破效果。爆破飞石、冲击波和爆破振动均在安全允许范围内,未对周围建(构)筑物造成损害。

关键词(KeyWords)： 独塔单索面预应力斜拉桥;控制爆破;原地坍塌;预处理;混合缓冲垫层

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周祥磊,陈德志,罗鹏,李本伟,胡浩川,周应军,李克菲,陈晨

参考文献(References)：

• [1] 王浩,李爱群.ANSYS大跨度桥梁高等有限元分析和工程实例[M].北京.中国建筑工业出版社,2014:62- 63.
• [2] 高黎,张英才,袁绍国.连霍高速天桥爆破拆除技术[J].爆破,2014,31(3):110-113.GAO Li,ZHANG Ying-cai,YUAN Shao-guo.Explosive demolition of Lian-huo highway overpass bridge[J].Blasting,2014,31(3):110-113.(in Chinese)
• [3] 甄梦阳,李本伟,陈德志,等.1160 m长城市高架桥爆破拆除[J].爆破,2017,34(2):91-95.ZHEN Meng-yang,LI Ben-wei,CHEN De-zhi,et al.Explosive demolition of 1160 m long urban viaduct[J].Blasting,2017,34(2):91-95.(in Chinese)
• [4] 张勤彬,程贵海,刘思远,等.跨航道桥梁的爆破拆除[J].爆破,2018,35(4):78-83.ZHANG Qin-bin,CHENG Gui-hai,LIU Si-yuan,et al.Blasting demolition of bridges across channels[J].Blasting,2018,35(4):78-83.(in Chinese)
• [5] 刘国军,梁锐,杨元兵.复杂环境下钢筋混凝土简支梁式桥爆破拆除[J].爆破,2017,34(4):115-119.LIU Guo-jun,LIANG Rui,YANG Yuan-bing.Explosive demolition of reinforced concrete simply supported beam bridge under complex environment[J].Blasting,2017,34(4):115-119.(in Chinese)
• [6] 池恩安.下承式80 m拱肋公路桥组合爆破拆除技术[J].爆破,2010,27(1):72-75.CHI Enan.The 80 m under-supported arch rib road bridge constitute blasting demolition technology[J].Blasting,2010,27(1):72-75.(in Chinese)
• [7] 茆恒阳,郑德明,廖和平,等.复杂环境下350 m钢筋砼桥梁爆破拆除[J].爆破,2019,36(4):108-111.MO Heng-yang,ZHENG De-ming,LIAO He-ping,et al.Blasting demolition of a 350 m reinforced concrete simply supported beam bridge in complex environment[J].Blasting,2019,36(4):108-111.(in Chinese)
• [8] 王春玲,张英才,李壮文.黑石渡浏阳河大桥控制爆破技术[J].爆破,2013,30(3):96-99.WANG Chun-ling,ZHANG Ying-cai,LI Zhuang-wen.Control blasting technology in blackstone Kuantu Liu-yang River Bridge[J].Blasting,2013,30(3):96-99.(in Chinese)
• [9] 李本伟,周祥磊,王琪,等.钢结构锅炉框架爆破排险[J].爆破,2020,37(2):97-102.LI Ben-wei,ZHOU Xiang-lei,WANG Qi,et al.Danger removal by blasting for steel structure boiler frame[J].Blasting,2020,37(2):97-102.(in Chinese)
• [10] 赵明生,龙源,贾永胜,等.预应力混凝土连续梁桥控制爆破拆除[J].爆破,2015,32(4):103-109.ZHAO Ming-sheng,LONG Yuan,JIA Yong-sheng,et al.Control blasting technology for bridge with prestressed continuous concrete beams[J].Blasting,2015,32(4):103-109.(in Chinese)
• [11] 王琪,李本伟,陈德志,等.台州电厂210 m钢筋混凝土烟囱40 m高切口爆破拆除[J].爆破,2016,33(2):92-96.WANG Qi,LI Ben-wei,CHEN De-zhi,et al.Explosive demolition of 210 m high reinforced concrete chimney with blast cut at 40 m height in Taizhou power plant[J].Blasting,2016,33(2):92-96.(in Chinese)
• [12] GB6722—2014爆破安全规程[S].北京:中国标准出版社,2014.