查静枝;王霞明;顾平;程才林;
ZHA Jing-zhi,WANG Xia-ming,GU Ping,CHENG Cai-lin(Zhejiang Jing-An Blasting Co.Ltd.,Hangzhou 310005,China)

• 1:浙江京安爆破工程有限公司

摘要(Abstract)：

介绍了一组高耸桥墩的爆破拆除工程实例。该桥墩由于砼体标号高、布筋密集,定向倾倒难度很大,在爆破设计方案中采用了大定向窗倾角、大定向窗尺寸、大爆破切口截面以及大炸药单耗,并辅以对称配重的牵拉,确保了桥墩的顺利倒塌及定向的准确性。这些经验具有实际应用价值。
This paper introduced an example of blasting demolition of a set of high bridge piers.Because of the high strength concrete,large number of vertical reinforcing steels,they were difficult to directional topple down.So,in the blasting design,we not only adopted the large angle and dimensions of directional window,large blasting cut and large specific charge,but also took advantage of pulling force.These measures ensured the pair of bridge piers to collapse smoothly and with an accurate direction.This experience has the great practical application value.

关键词(KeyWords)： 桥墩;爆破切口;定向窗;炸药单耗;对称配重牵拉定向法
Bridge pier;Blasting cut;Directional window;Specific charge;Directional method with symmetrical pulling force

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 查静枝;王霞明;顾平;程才林;
ZHA Jing-zhi,WANG Xia-ming,GU Ping,CHENG Cai-lin(Zhejiang Jing-An Blasting Co.Ltd.,Hangzhou 310005,China)

参考文献(References)：

• (1)中华人民共和国标准.爆破安全规程(GB6722-2003)[S].北京:中国标准出版社,2004.
• (2)金骥良,顾毅成,史雅语.拆除爆破设计与施工[M].北京:中国铁道出版社,2004.
• (3)王霞明,程才林,王海潮,等.十五层多边形框剪大楼的爆破拆除[J].工程爆破,2004,10(4):35-39.
• (4)程才林,查静枝.施工组织实施方案[R].浙江京安爆破工程有限公司,2009.