水压爆破拆除技术在城区空心板桥中的应用
|
摘要
针对城区复杂环境下空心板桥水压爆破拆除工程,为解决交通组织难度大,确保管线安全,爆破飞石等防护,施工作业面长,施工量大等施工难题,在爆破中采用主桥自中间向两端逐跨原地坍塌爆破拆除、两端引桥桥台及基础弱松动爆破的方案,重点介绍水压爆破原理与计算,通过布置炮孔、计算药量、选择起爆网路等,设计实际爆破参数,制定施工要点与安全防护措施。此次爆破缩短工期,取得显著的经济效益。
For the hydraulic blasting project of box-type bridges in complex urban environment,in order to solve the construction problems such as difficult traffic organization,pipeline safety,blasting and flying atone protection,long construction surface and large construction amount,the main bridge is demolished by collapse blasting from the middle to the two ends of each span in blasting,and the bridge abutment and foundation with weak looseness blasting at both ends are adopted. The principle and calculation of hydraulic blasting are introduced emphatically,and the actual blasting parameters,construction essentials and safety protection measures are designed by means of hole arrangement,calculation of charge and selection of blasting network. The hydraulic blasting method shortens the construction period, and achieves remarkable economic benefits.
For the hydraulic blasting project of box-type bridges in complex urban environment,in order to solve the construction problems such as difficult traffic organization,pipeline safety,blasting and flying atone protection,long construction surface and large construction amount,the main bridge is demolished by collapse blasting from the middle to the two ends of each span in blasting,and the bridge abutment and foundation with weak looseness blasting at both ends are adopted. The principle and calculation of hydraulic blasting are introduced emphatically,and the actual blasting parameters,construction essentials and safety protection measures are designed by means of hole arrangement,calculation of charge and selection of blasting network. The hydraulic blasting method shortens the construction period, and achieves remarkable economic benefits.
引文
[1]中国工程爆破协会.爆破安全规程:GB6722—2014[S].北京:中国标准出版社,2004.
[2]谢先启.城市高架桥精细爆破拆除[M].北京:科学出版社,2013.
[3]罗德丕,池恩安.城市中心公路立交桥的水压爆破拆除[J].矿业研究与开发,2012,32(3):111-114.
[4]范学臣,刘学庆,纪臻,等.胶州湾高速环太原路立交桥水压爆破拆除[J].工程爆破,2011,17(3):62-65.
[5]范学臣,刘学庆.太原路立交桥水压爆破拆除[J].市政技术,2011,29(2):47-49.
[6]朱金华,周风仪.水压爆破拆除钢筋混凝土连续箱梁桥[J].采矿技术,2007(3):125-126,129.
[7]王守伟.复杂环境下钢筋混凝土箱型拱桥的爆破拆除[J].爆破,2018,35(3):98-102.
[8]周明安,贾金龙,李必红,等.岳阳南湖大桥旧桥爆破拆除[J].采矿技术,2018,18(5):143-145,152.
[2]谢先启.城市高架桥精细爆破拆除[M].北京:科学出版社,2013.
[3]罗德丕,池恩安.城市中心公路立交桥的水压爆破拆除[J].矿业研究与开发,2012,32(3):111-114.
[4]范学臣,刘学庆,纪臻,等.胶州湾高速环太原路立交桥水压爆破拆除[J].工程爆破,2011,17(3):62-65.
[5]范学臣,刘学庆.太原路立交桥水压爆破拆除[J].市政技术,2011,29(2):47-49.
[6]朱金华,周风仪.水压爆破拆除钢筋混凝土连续箱梁桥[J].采矿技术,2007(3):125-126,129.
[7]王守伟.复杂环境下钢筋混凝土箱型拱桥的爆破拆除[J].爆破,2018,35(3):98-102.
[8]周明安,贾金龙,李必红,等.岳阳南湖大桥旧桥爆破拆除[J].采矿技术,2018,18(5):143-145,152.