摘要
建(构)筑物爆破拆除工程中,倒塌的钢筋混凝土结构以较高的速度冲击地面时将诱发地震波,对地震波的振动强度进行预测是分析拆除工程对周边环境影响程度并确定控制措施的前提。基于土体在强冲击作用下的塑性变形特征,碰撞过程的动量守恒理论和量纲分析法,构建了触地接触面较宽的塌落振动预测模型。通过工程案例对计算模型的有效性进行了验证。算例表明,该模型计算精度基本满足工程设计需要,且简便易用。
The seismic wave will be induced in the blasting demolition projects of buildings and structures when the collapsed reinforced concrete structure impacts the ground at high speed.The prediction of vibration velocity of seismic waves is essential to analyze the influence of demolition projects on the environment and design control measures.Based on the plastic deformation characteristics of soil under the intense impact,momentum conservation theory,and dimensional analysis method,we established a collapse vibration prediction model with a wide contact surface.Some actual cases verified the validity of the calculation model.It shows that the calculation accuracy of the model can meet the needs of engineering design,and it is easy to use.
作者
孙金山
颜佳鑫
蒋跃飞
张震
刘桐
SUN Jinshan;YAN Jiaxin;JIANG Yuefei;ZHANG Zhen;LIU Tong(State Key Laboratory of Precision Blasting,Hubei Key Laboratory of Blasting Engineering,Jianghan University,Wuhan 430056,Hubei,China;Zhejiang Gaoneng Corporation of Blasting Engineering,Hangzhou 310000,Zhejiang,China)
出处
《江汉大学学报（自然科学版）》
2022年第1期5-10,共6页
Journal of Jianghan University：Natural Science Edition
基金
湖北省自然科学基金资助项目(2020CFA043)
湖北省重点研发计划项目(2020BCA084)。
关键词
拆除爆破
塌落冲击
振动速度
数学模型
demolition blasting
collapse impact
vibration velocity
mathematical model
