预应力孔道压浆密实度模型试验研究  

Experimental Model Research on Prestressed Duct Grouting Compactness

作　　者：褚锋 张峰[2] 齐广志[2] 曹原[2] 姚晨[2] 

机构地区：[1]山东高速四川产业发展有限公司,四川成都610225 [2]山东大学岩土与结构工程研究中心,山东济南250061

出　　处：《现代交通技术》2015年第5期46-50,共5页Modern Transportation Technology

摘　　要：基于冲击回波法的检测原理,通过人为设置不同的预应力孔道压浆密实度,文章对应力波传播路径与预应力孔道压浆密实度的关系进行分析,开展了不同混凝土板厚的模型测试,并对振动时程数据进行分析,结果表明:随着压浆密实度的减小,应力波传播路径长度增大,主频向低频漂移,频率曲线中主频和波纹管密实度呈线性关系。Based on the detection principle of impact-echo method, relations between propagation routes of stress wave and prestressed duct grouting compactness are analyzed by means of setting several artificial defects in pretressed duct. Vibration time history data of concrete slab with different thickness are also analyzed. The research results show that with grouting compactness decreases, length of stress wave propagation routes increases and main frequency decreases, a linear relation between main frequency and compactness is presented.

关 键 词：预应力波纹管 压浆密实度 无损检测 冲击回波法 试验研究 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]