摘要
针对道路混凝土中钢筋网对振动能量的阻隔,通过采集、比较振动加速度和测定分层密度等方法,研究振动能量在混凝土中(钢筋网上、下)的传播情况.研究表明:经过单层钢筋网的阻隔,振动能量水平方向上约衰减12%,竖直方向上约衰减19%;钢筋网的存在对其上混凝土的振动密实无显著影响,对其下混凝土有较大影响;振动频率和振动延续时间是影响振动能量衰减系数的关键因素,适当的增大振动频率、延长振动延续时间可以有效的减小能量衰减.
By collecting coMParing vibration acceleration and determining density stratification,the propagation of energy in the concrete was studied to to reflect vibration barrier of road concrete from steel mesh.The results indicate that： vibration energy attenuation in horizontal direction is about 12%,meanwhile in vertical direction is about 19% through single steel mesh;Steel mesh has no significant effect on concrete above steel mesh,but has great significant effect on concrete blow steel mesh;Vibration frequency and time greatly affect coefficient of vibration energy attenuation,and appropriately increasing frequency or time can effectively reduce the energy attenuation.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第6期37-41,共5页
Journal of Zhengzhou University（Engineering Science）
基金
西部交通建设科技项目(200731822301-7)
山西省交通建设科技项目(11-2-19)
关键词
道路工程
钢筋混凝土
振动能量
阻隔
振动加速度
road engineering
reinforced concrete
vibration energy
barrier
vibration acceleration
