[1]代志力,向中富,刘世建,等.基于弹性波的预应力管道灌浆密实度定性检测与分析[J].长安大学学报(自然科学版),2021,41(5):77-87.
　DAI Zhi li,XIANG Zhong fu,LIU Shi jian,et al.Qualitative detection and analysis for compactness of prestressed concrete duct grouting based on elastic wave[J].Journal of Chang’an University (Natural Science Edition),2021,41(5):77-87.
点击复制

基于弹性波的预应力管道灌浆密实度定性检测与分析()
分享到：

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第41卷
期数:
2021年5期
页码:
77-87
栏目:
桥梁与隧道工程
出版日期:
2021-09-15

文章信息/Info

Title:
Qualitative detection and analysis for compactness of prestressed concrete duct grouting based on elastic wave
作者:
代志力; 向中富; 刘世建; 周蕙; 罗超
（1. 重庆交通大学 土木工程学院，重庆 400060； 2. 广西交通科学研究院有限公司，广西 南宁 530000；3. 重庆交通大学 城市建筑与规划学院，重庆 400060）
Author(s):
DAI Zhili1;  XIANG Zhongfu1;  LIU Shijian2;  ZHOU Hui3;  LUO Chao1
(1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400060, China; 2. Guangxi TrafficScience Research Institute Co. Ltd， Nanning 530000, Guangxi, China; 3. School of Architecture andUrban Planning, Chongqing Jiaotong University, Chongqing 400060, China)
关键词:
桥梁工程; 预应力混凝土; 管道灌浆密实度; 定性检测; 弹性波首波
Keywords:
bridge engineering;  prestressed concrete;  duct grouting compactness;  qualitative detection;  elastic first wave
文献标志码:
A
摘要:
为了提高预应力管道灌浆密实度定性检测的精度，针对1片20 m长的模型梁进行预应力管道灌浆密实度定性检测。首先，通过简化建立了弹性波首波在管道中的一维传播模型，提出首波慢度与灌浆密实度之间的线性表达式。然后，根据传播模型浇筑1片20 m长的模型梁，模型梁内含有5根具有不同灌浆密实度的预应力管道；利用弹性波激发与采集装置对模型梁中的预应力管道进行灌浆密实度定性检测，通过循环采样的方式进行数据采样；对采样数据进行数据处理，通过首波位置自动判断算法和最优滤波参数选择方法等手段，得到被检管道的首波慢度。最后，利用首波慢度与灌浆密实度线性公式，计算出被检管道的灌浆密实度，并将结果与设计值进行对比分析。结果表明：弹性波首波慢度与管道灌浆密实度之间呈线性关系；检测结果与设计值之间的相对误差约为5%。所提出的循环采样、首波位置自动判断和最优滤波参数选择等方法，可用于实际的预应力管道灌浆密实度定性检测，提高检测精度。
Abstract:
In order to improve the detection accuracy, the prestressed concrete duct grouting qualitative detection around a 20 meters long model beam was researched. Firstly, an onedimensional propagation model for the first elastic wave in the grouting duct by reasonable simplification was established, then a linear formula for the first elastic wave slowness and duct grouting compactness was proposed. Secondly, according to the propagation model, a 20 meters long model beam which include 5 ducts with different grouting compactness were built. The elastic excitation and acquisition devices were used to detect the duct grouting qualitatively by cycle sampling method. The sampled data, calculated the first wave slowness by first wave position automatic judgment algorithm and optimal filtering parameter selection method were processed. Finally, the linear formula to calculate the duct grouting compactness was used, compare with the result of the design value. The results show that the first elastic wave and the duct grouting compactness are nearly linear relationship, the relative error is 5% more or less. The cycle sampling, first wave position automatic judgment algorithm and optimal filtering parameter selection method can be used to detect the compaction of prestressed concrete duct grouting, and improve detection accuracy. 1 tab, 11 figs, 31 refs.

相似文献/References:

[1]李宇,朱晞,杨庆山,等.高墩大跨桥梁结构的脆弱性分析[J].长安大学学报(自然科学版),2012,32(01):0.
[2]高亮,刘健新,张丹,等.桁架桥主梁三分力系数试验[J].长安大学学报(自然科学版),2012,32(01):0.
[3]刘旭政,王丰平,黄平明,等.斜拉桥各构件校验系数的常值范围[J].长安大学学报(自然科学版),2012,32(01):0.
[4]尚维波,张春宁.高墩刚构桥系梁抗震分析[J].长安大学学报(自然科学版),2012,32(01):0.
[5]邬晓光,李冀弘,宋伟伟.基于改进响应面法的在役PC桥梁承载力可靠性[J].长安大学学报(自然科学版),2012,32(03):53.
　WU Xiao-guang,LI Ji-hong,SONG Wei-wei.Reliability of existing PC bridge based on improved response surface method[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):53.
[6]石雄伟,袁卓亚,马毓泉,等.钢板-混凝土组合加固预应力混凝土箱梁[J].长安大学学报(自然科学版),2012,32(03):58.
　SHI Xiong-wei,YUAN Zhuo-ya,MA Yu-quan,et al.Prestressed concrete box girder strengthened with comsposition of steel plate and concrete[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):58.
[7]李传习,陶 伟,董创文.斜交墩截面刚度与弯曲正应力[J].长安大学学报(自然科学版),2012,32(03):63.
　LI Chuan-xi,TAO Wei,DONG Chuang-wen.Sectional stiffness and bending normal stress of oblique pier[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):63.
[8]邓继华,邵旭东.带铰平面梁元几何非线性有限元分析[J].长安大学学报(自然科学版),2012,32(03):68.
　DENG Ji-hua,SHAO Xu-dong.Geometric nonlinear finite element analysis of plane beam element with hinge[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):68.
[9]蒲广宁,赵 煜,宋一凡.减梁增肋法加固空心板桥的力学性能[J].长安大学学报(自然科学版),2012,32(06):38.
　PU Guang-ning,ZHAO Yu,SONG Yi-fan.Mechanical properties of strengthening hollow slab bridge based on beam-reduction and rib-addition method[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):38.
[10]党 栋,贺拴海,周勇军,等.基于车辆统计数据的汽车荷载标准值取值与评估[J].长安大学学报(自然科学版),2012,32(06):44.
　DANG Dong,HE Shuan-hai,ZHOU Yong-jun,et al.Choosing and assessment for the standard of vehicle load based on vehicle statistical data[J].Journal of Chang’an University (Natural Science Edition),2012,32(5):44.
[11]徐岳,朱万勇,杨岳,等.波形钢腹板PC组合箱梁桥抗弯承载力计算[J].长安大学学报(自然科学版),2005,25(02):60.
　XU Yue,ZHU Wan-yong,YANG Yue.Calculation of ultimate moment capacity of prestressed concrete box-girder bridge with corrugated steel webs[J].Journal of Chang’an University (Natural Science Edition),2005,25(5):60.
[12]周敉,宋一凡,赵小星,等.预应力混凝土桥梁悬臂浇筑的施工控制[J].长安大学学报(自然科学版),2005,25(06):43.
　ZHOU Mi,SONG Yi-fan,ZHAO Xiao-xing.Control technique for construction of pre-stressed-concrete cantilever casting bridge[J].Journal of Chang’an University (Natural Science Edition),2005,25(5):43.
[13]张　岗,贺拴海,刘　扬,等. 爆燃火灾全程下多梁式ＰＣＴ 型梁桥剪力滞效应[J].长安大学学报(自然科学版),2014,34(06):79.
[14]张　岗,贺拴海,刘　扬,等.火灾全程预应力混凝土T梁桥刚度衰变[J].长安大学学报(自然科学版),2016,36(01):51.
　ZHANG Gang,HE Shuan-hai,LIU Yang,et al.Decay of rigidity for prestressed concrete T-shaped girder bridge exposed to fire[J].Journal of Chang’an University (Natural Science Edition),2016,36(5):51.

更新日期/Last Update: 2021-09-30