一种新型预应力管道的智能检测技术研发
|
摘要
预应力管道是实现体内预应力的基本构件,目前普遍使用的金属波纹管和塑料波纹管均存在压浆不密实和预应力张拉不足等问题,从而导致梁体过量下挠、混凝土开裂、承载力下降等耐久性问题。为了解决上述问题,对现有的索力检测技术和压浆质量检测技术的原理、优势和不足进行调研分析,优选磁通量法和图像识别法作为索力和压浆质量检测方法;提出了一种新型预应力管道,以钢管作为预应力管材,采用磁通量法和图像识别法为原理开发了索力检测组件和压浆密实度测量组件;给出了2种智能检测组件的构造设计和连接方法,可实现对永存预应力和压浆密实度的长期监测。
Prestressed pipe is the fundamental component in prestressed structure.Currently,metal corrugated pipe and plastic corrugated pipe that are commonly used have deficiencies such as lack of grouting and inadequate pretensioning,which results in excessive deflection of the beam,cracking of concrete,and decline of bearing capacity.In order to solve these problems,the principle,advantages and disadvantages of existing cable force detection technology and grouting quality detection technology are investigated and analyzed,and magnetic flux method and image recognition method are selected.A new prestressed steel pipe,combined with cable force monitoring component and grouting quality monitoring component,is proposed.The location,structural characteristics and connection method of the two intelligent components are clarified,which enables long-term monitoring of perpetual prestressing and grouting compaction.
Prestressed pipe is the fundamental component in prestressed structure.Currently,metal corrugated pipe and plastic corrugated pipe that are commonly used have deficiencies such as lack of grouting and inadequate pretensioning,which results in excessive deflection of the beam,cracking of concrete,and decline of bearing capacity.In order to solve these problems,the principle,advantages and disadvantages of existing cable force detection technology and grouting quality detection technology are investigated and analyzed,and magnetic flux method and image recognition method are selected.A new prestressed steel pipe,combined with cable force monitoring component and grouting quality monitoring component,is proposed.The location,structural characteristics and connection method of the two intelligent components are clarified,which enables long-term monitoring of perpetual prestressing and grouting compaction.
引文
[1]石雪飞,陈辉,沈炯伟.已下挠连续梁桥加固方案研究[J].石家庄铁道学院学报(自然科学版),2010,23(1):1-5.SHI Xuefei,CHEN Hui,SHEN Jiongwei.Study on reinforcement of deflected continuous beam bridge[J].Journal of Shijiazhuang Railway Institute(Natural Science),2010,23(1):1-5.
[2]石雪飞,高宝.大跨高墩变截面曲线箱梁桥悬臂施工变形分析与控制[J].结构工程师,2004(2):10-14.SHI Xuefei,GAO Bao.Deformation analysis and geometric control for long span continuous curved box girder bridges in cantilever construction[J].Structural Engineers,2004(2):10-14.
[3]杨琪,辛镜坤,石雪飞.大跨径PC梁桥长期下挠成因分析与加固对策研究[J].公路,2010(7):18-23.YANG Qi,XIN Jingkun,SHI Xuefei.Study on causes and strengthening of long-span Pre-stressed concrete girder bridge[J].Highway,2010(7):18-23.
[4]谢峻,王国亮,郑晓华.大跨径预应力混凝土箱梁桥长期下挠问题的研究现状[J].公路交通科技,2007,24(1):47.XIE Jue,WANG Guoliang,ZHENG Xiaohua.State of art of long term deflection for long span prestressed concrete box girder bridge[J].Journal of Highway and Transportation Research and Development,2007,24(1):47.
[5]张峰,叶见曙.预应力混凝土梁开裂后的受力性能分析[J].公路交通科技,2005,22(7):64-67.ZHANG Feng,YE Jianshu.Mechanical behavior of prestressed concrete beams after cracking[J].Journal of Highway and Transportation Research and Development,2005,22(7):64-67.
[6]郝超,裴岷山,强士中.斜拉桥索力测试新方法-磁通量法[J].公路,2000(11):30-31.HAO Chao,PEI Minshan,QIANG Shizhong.A new method for cable force testing of cable-stayed bridgesmagnetic flux method[J].Highway,2000(11):30-31.
[7]张恒,李权,丁一峥.宁波明州大桥磁通量传感器智能拉索制作及应用[J].公路交通技术,2011(4):91-93.ZHANG Heng,LI Quan,DING Yizheng.Fabrication and application of magnetic flux sensor intelligent stay-cables of Ningbo Mingzhou bridge[J].Technology of Highway and Transprot,2011(4):91-93.
[8]陈鲁,张其林.索结构中拉索张力测量的原理与方法[J].工业建筑,2006(S1):46-48CHEN Lu,ZHANG Qilin.Principle and method of measuring cable tension in a cable structures[J].Industrial Construction,2006(S1):46-48
[9]杨从晶,曲国阳.套式磁弹性扭矩传感器及测量仪的研究[J].振动、测试与诊断,2001(4):267-270.YANG Congjing,QU Guoyang.Development of muff type magnetoelastic torque sensor and measuring instrument[J].Journal of Vibration,Measurement&Diagnosis,2001(4):267-270.
[10]王雁,郭华.磁弹性扭矩传感器原理与误差[J].机械工程师,1998(3):55-58.WANG Yan,GUO Hua.Principle and error of magnetoelastic torque sensor[J].Mechanical Engineer,1998(3):55-58.
[11]庞国英,董传智,段元锋,等.基于磁弹效应的预应力钢绞线全量应力监测实验研究[J].结构工程师,2015(4):192-198.PANG Guoying,DONG Chuanzhi,DUAN Yuanfeng,et al.Elasto-magnetic effect based total stress monitoring of prestressed steel strands:experimental investigation[J].Structural Engineer,2015(4):192-198.
[12]王智丰,周先雁,晏班夫,等.冲击回波法检测预应力束孔管道压浆质量[J].振动与冲击,2009(1):166-169,190,203-204.WANG Zhifeng,ZHOU Xianyan,YAN Banfu,et al.Grout quality testing in prestressed ducts with impact-echo method[J].Vibration and Impact,2009(1):166-169,190,203-204.
[13]岳振民,李雅娟.基于冲击回波理论的预应力管道压浆密实度无损检测研究[J].公路,2015(9):236-239.YUE Zhenmin,LI Yajuan.Research on non-destructive testing of prestressed pipe grouting compactness based on shock echo theory[J].Highway,2015(9):236-239.
[14]贺栓海,赵祥模.公路桥梁检测及评价技术综述[J].中国公路学报,2017(11):63-80.HE Shuanhai,ZHAO Xiangmo.Review of highway bridge inspection and condition assessment[J].China Journal of Highway and Transport,2017(11):63-80.
[15]张武毅,赵建铧,汤建林.预应力混凝土梁管道压浆密实度无损检测技术研究[J].中国水运,2014(12):341-343.ZHANG Wuyi,ZHAO Jianhua,TANG Jianlin.Research on non-destructive testing technology for pre-stressed concrete beam pipe grouting compactness[J].China Water Transport,2014(12):341-343.
[2]石雪飞,高宝.大跨高墩变截面曲线箱梁桥悬臂施工变形分析与控制[J].结构工程师,2004(2):10-14.SHI Xuefei,GAO Bao.Deformation analysis and geometric control for long span continuous curved box girder bridges in cantilever construction[J].Structural Engineers,2004(2):10-14.
[3]杨琪,辛镜坤,石雪飞.大跨径PC梁桥长期下挠成因分析与加固对策研究[J].公路,2010(7):18-23.YANG Qi,XIN Jingkun,SHI Xuefei.Study on causes and strengthening of long-span Pre-stressed concrete girder bridge[J].Highway,2010(7):18-23.
[4]谢峻,王国亮,郑晓华.大跨径预应力混凝土箱梁桥长期下挠问题的研究现状[J].公路交通科技,2007,24(1):47.XIE Jue,WANG Guoliang,ZHENG Xiaohua.State of art of long term deflection for long span prestressed concrete box girder bridge[J].Journal of Highway and Transportation Research and Development,2007,24(1):47.
[5]张峰,叶见曙.预应力混凝土梁开裂后的受力性能分析[J].公路交通科技,2005,22(7):64-67.ZHANG Feng,YE Jianshu.Mechanical behavior of prestressed concrete beams after cracking[J].Journal of Highway and Transportation Research and Development,2005,22(7):64-67.
[6]郝超,裴岷山,强士中.斜拉桥索力测试新方法-磁通量法[J].公路,2000(11):30-31.HAO Chao,PEI Minshan,QIANG Shizhong.A new method for cable force testing of cable-stayed bridgesmagnetic flux method[J].Highway,2000(11):30-31.
[7]张恒,李权,丁一峥.宁波明州大桥磁通量传感器智能拉索制作及应用[J].公路交通技术,2011(4):91-93.ZHANG Heng,LI Quan,DING Yizheng.Fabrication and application of magnetic flux sensor intelligent stay-cables of Ningbo Mingzhou bridge[J].Technology of Highway and Transprot,2011(4):91-93.
[8]陈鲁,张其林.索结构中拉索张力测量的原理与方法[J].工业建筑,2006(S1):46-48CHEN Lu,ZHANG Qilin.Principle and method of measuring cable tension in a cable structures[J].Industrial Construction,2006(S1):46-48
[9]杨从晶,曲国阳.套式磁弹性扭矩传感器及测量仪的研究[J].振动、测试与诊断,2001(4):267-270.YANG Congjing,QU Guoyang.Development of muff type magnetoelastic torque sensor and measuring instrument[J].Journal of Vibration,Measurement&Diagnosis,2001(4):267-270.
[10]王雁,郭华.磁弹性扭矩传感器原理与误差[J].机械工程师,1998(3):55-58.WANG Yan,GUO Hua.Principle and error of magnetoelastic torque sensor[J].Mechanical Engineer,1998(3):55-58.
[11]庞国英,董传智,段元锋,等.基于磁弹效应的预应力钢绞线全量应力监测实验研究[J].结构工程师,2015(4):192-198.PANG Guoying,DONG Chuanzhi,DUAN Yuanfeng,et al.Elasto-magnetic effect based total stress monitoring of prestressed steel strands:experimental investigation[J].Structural Engineer,2015(4):192-198.
[12]王智丰,周先雁,晏班夫,等.冲击回波法检测预应力束孔管道压浆质量[J].振动与冲击,2009(1):166-169,190,203-204.WANG Zhifeng,ZHOU Xianyan,YAN Banfu,et al.Grout quality testing in prestressed ducts with impact-echo method[J].Vibration and Impact,2009(1):166-169,190,203-204.
[13]岳振民,李雅娟.基于冲击回波理论的预应力管道压浆密实度无损检测研究[J].公路,2015(9):236-239.YUE Zhenmin,LI Yajuan.Research on non-destructive testing of prestressed pipe grouting compactness based on shock echo theory[J].Highway,2015(9):236-239.
[14]贺栓海,赵祥模.公路桥梁检测及评价技术综述[J].中国公路学报,2017(11):63-80.HE Shuanhai,ZHAO Xiangmo.Review of highway bridge inspection and condition assessment[J].China Journal of Highway and Transport,2017(11):63-80.
[15]张武毅,赵建铧,汤建林.预应力混凝土梁管道压浆密实度无损检测技术研究[J].中国水运,2014(12):341-343.ZHANG Wuyi,ZHAO Jianhua,TANG Jianlin.Research on non-destructive testing technology for pre-stressed concrete beam pipe grouting compactness[J].China Water Transport,2014(12):341-343.