兴钛石拱桥爆破拆除的数值模拟研究NUMERICAL SIMULATION RESEARCH OF BLASTING DEMOLITION OF XINGTAI STONE ARCH BRIDGE
吴远林,詹振锵,池恩安
WU Yuan-lin1,ZHAN Zhen-qiang1,2
摘要(Abstract)：
针对贵州兴钛石拱桥爆破环境复杂的情况,采用延时起爆技术控制爆破有害效应,将桥体分成4段,5个爆破切口,爆破切口间延时110ms,并利用有限元分析软件ANSYS/LS-DYNA中SOL-ID164体单元建立模型,模拟石拱桥爆破拆除倒塌过程,通过对实际爆破效果和数值模拟倒塌过程进行对比分析,解体过程与爆体触地时间非常吻合,表明数值模拟结果可为实际爆破拆除方案的确定提供参考。
According to the complex surroundings of Xingtai stone arch bridge,the delay initiation was used to control the blasting harm effects.The bridge was divided into four parts,five blasting notches,and the delay time was 110ms.The model was built with the SOLID 164 element of the finite element software ANSYS/LS-DYNA to simulate the collapse process of the stone arch bridge.According to the comparative study of the actual blasting effects and the numerical simulation collapse process,the process of the collapse and the hit ground time were exactly matched,which showed the simulation result could provide reference for actual blasting demolition.
关键词(KeyWords)：
石拱桥;爆破拆除;数值模拟
Stone arch bridge;Blasting demolition;Numerical simulation
基金项目(Foundation):
作者(Author):
吴远林,詹振锵,池恩安
WU Yuan-lin1,ZHAN Zhen-qiang1,2
参考文献(References)：
- (1)龙源,亓秀泉,徐全军,等.控制爆破在江都大桥拆除中的应用[J].工程爆破,2007,13(4):66-68.
- (2)施富强,杨旭升,李文全,等.田庄台辽河公路大桥控制爆破拆除技术分析[J].工程爆破,2009,15(3):50-54.
- (3)汪旭光,于亚伦.拆除爆破理论与工程实例[M].北京:人民交通出版社,2008.
- (4)杨国梁.钢筋混凝土建筑结构爆破拆除数值模拟研究[D].北京:北京理工大学,2009.
- (5)池恩安.公路桥梁爆破拆除技术及数值模拟[D].武汉:武汉理工大学,2011.
- (6)郝晓宁,龙源,谢刚.高架桥爆破拆除倒塌过程数值模拟研究[J].爆破,2010,27(4):78-81.
- (7)佘勇,池恩安,赵明生.钢筋混凝土双曲拱桥爆破拆除数值模拟[J].金属矿山,2012(7):50-55.