张良,管晓明,张春巍,李萌,李扬,熊怡思,王玉山,齐禄

• 1:青岛理工大学
• 2:北京市市政三建设工程有限责任公司
• 3:北京市政建设集团有限责任公司

摘要(Abstract)：

为研究地下马蹄形管道在隧道爆破开挖过程中的振动响应对管道运行安全的影响,采用ANSYS/LS-DYNA有限元软件中的ALE算法建立三维数值模型,研究隧道爆破地下马蹄形管道的振动响应。研究结果表明:数值模拟中测点振速峰值与现场监测振速峰值误差均在10%之内,验证了数值模拟结果的可靠性;柱状炸药起爆后,爆破地震波以近似球形面波的形式传播至马蹄形管道,马蹄形管道各部分振动响应不同,拱顶、底板部分的拉应力峰值和振速峰值较大,边墙部分较小,且各部分拉应力峰值和振速峰值均随着与爆炸中心距离的增大而减小;在隧道爆破开挖过程中,管道的拉应力峰值和振速峰值与爆破掌子面距管线水平距离成反比,与上台阶掏槽孔药量成正比。

关键词(KeyWords)： 马蹄形管道;隧道爆破;数值模拟;ALE算法;振动响应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金项目(51708317);; 山东省自然科学基金项目(ZR2016EEB27);; 中国博士后科学基金面上项目(2017M621095)

作者(Author): 张良,管晓明,张春巍,李萌,李扬,熊怡思,王玉山,齐禄

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