钟冬望;李腾飞;熊伟;
ZHONG Dong-wang;LI Teng-fei;XIONG Wei;College of Science, Wuhan University of Science and Technology;Hubei Province Intelligent Blasting Engineering Technology Research Center;

• 1:武汉科技大学理学院
• 2:武汉科技大学湖北省智能爆破工程技术中心

摘要(Abstract)：

为了顺利完成水塔的定向拆除爆破,将压电陶瓷传感器应用于水塔的拆除爆破中,通过MATLAB小波包能量分析法对传感器监测信号进行能量指数计算。结果表明:试爆对水塔结构造成损伤,与导向窗径向对称的塔壁腹部的平均能量指数是其背部能量指数的60.37%,腹部产生的损伤小于背部的损伤;通过频谱分析发现水塔倒塌过程中各测点信号主频率集中在4～11 Hz,信号功率主要在0～20 Hz的频段内,与一般建筑物自振频率接近。埋入式压电陶瓷监测系统能对建(构)筑物倒塌过程中各阶段、各部位破坏和损伤程度进行监测和记录,是对拆除爆破建(构)筑物过程分析的一种有效的技术方法。
In order to successfully complete the directional demolition blasting of the water tower, the piezoelectric ceramic sensor is applied to the demolition blasting of water tower, and the energy index of the sensor monitoring signal is calculated by the wavelet packet energy analysis method of MATLAB. The results show that the test blasting causes damage to the water tower structure, and the average energy index of the abdomen of the tower wall, which is radially symmetrical with the guide window, is 60.37% of its back energy index, and the damage of the abdomen is less than that of the back. Through the spectrum analysis, it is found that the main frequency of the signal of each measuring point is concentrated in 4-11 Hz during the collapse of the water tower, and the signal power is mainly in the frequency band of 0-20 Hz, which is close to the natural frequency of general buildings. The embedded piezoelectric ceramic monitoring system can monitor and record damage degree of each stage and position in the collapse process of buildings(structures). It is an effective technical method for the process analysis of demolition blasting buildings(structures).

关键词(KeyWords)： 压电陶瓷传感器;拆除爆破;被动监测;小波包能量分析;频谱分析
PZT sensor;demolition blasting;passive monitoring;wavelet packet energy analysis;spectrum analysis

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51904210);; 武汉科技大学研究生创新创业基金资助项目

作者(Authors): 钟冬望;李腾飞;熊伟;
ZHONG Dong-wang;LI Teng-fei;XIONG Wei;College of Science, Wuhan University of Science and Technology;Hubei Province Intelligent Blasting Engineering Technology Research Center;

DOI: 10.19931/j.EB.20200220

参考文献(References)：

• [1] 李鹏飞.基于压电陶瓷传感器的混凝土早期强度及裂缝监测试验研究[D].长沙：长沙理工大学，2019.LI P F.The research on early strength and crack monitoring of concrete based on piezoelectric ceramic sensor[D].Changsha:Changsha University of Science & Technology,2019.
• [2] ANDREADES C,MEO M,CIAMPA F.Fatigue testing and damage evaluation using smart CFRP composites with embedded PZT transducers[J].Materials Today:Proceedings,2021,34(1):260-265.
• [3] QIAN F,YABIN L,GANGBING S.Real-time monitoring of early-age concrete strength using piezoceramic-based smart aggregates[J].Journal of Aerospace Engineering,2019,ID:04018115.
• [4] 肖家浩，饶玉龙，李勇.基于压电波动法的混凝土损伤检测[J].四川建材，2019,45(9):32-33.XIAO J H,RAO Y L,LI Y.Damage detection of concrete based on piezoelectric wave method[J].Sichuan Building Materials,2019,45(9):32-33.
• [5] 赵淑兰，金添，肖敏，等.钢管桁架拱结构焊缝裂纹损伤监测研究[J].交通科学与工程，2019,35(2):82-88.ZHAO S L,JIN T,XIAO M,et al.Research on the monitoring of weld crack damage in steel tube truss arch structures[J].Journal of Transport Science and Engineering,2019,35(2):82-88.
• [6] 姜海川.基于压电智能骨料的混凝土结构损伤主动监测方法[D].大连：大连理工大学，2013.JIANG H C.The method of active damage monitoring for concrete structures based on piezoelectric smart aggregate[D].Dalian:Dalian University of Technology,2013.
• [7] 李博文.基于PZT列阵的被动波动法薄板撞击点定位研究[D].沈阳：沈阳建筑大学，2019.LI B W.Thin plate structure impact localization based on PZT array and passive wave method[D].Shenyang:Shenyang Jianzhu University,2019.
• [8] LINGZHU Z,ZHOU L,ZHENG Y,et al.Monitoring of bending stiffness of BFRP reinforced concrete beams using piezoceramic transducer enabled active sensing[J].Smart Materials and Structures,2020,29(10).
• [9] 郑旭锋，肖沙里，谭霞，等.压电传感技术在桥梁振动检测中的研究与应用[J].压电与声光，2003,25(1):71-74.ZHENG X F,XIAO S L,TAN X,et al.Research and application of piezoelectric bridge vibration detection[J].Piezoelectrics and Acoustooptics,2003,25(1):71-74.
• [10] YANG X M,LI Z J.Cement-based piezoelectric sensor for monitoring of highway traffic I:basic properties[J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(S1):413-417.
• [11] YANG X M,LI Z J.Cement-based piezoelectric sensor for monitoring of highway traffic II:field test [J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(S1):418-423.
• [12] 赵晓燕，李宏男.应用压电陶瓷传感器对钢筋混凝土框-剪模型振动台试验地震损伤监测[J].振动与冲击，2006(4):82-84.ZHAO X Y,LI H N.Health monitoring of reinforced concrete frame-shearwall using piezoceram ic transducer[J].Journal of Vibration and Shock,2006(4):82-84.
• [13] 杨文伟，杨霞，蒙卉恩.基于压电陶瓷的PVA-ECC混凝土柱裂缝损伤监测[J].沈阳建筑大学学报(自然科学版),2020,36(4):628-636.YANG W W,YANG X,MENG B E.Crack damage monitoring of pvaecc columns based on piezoelectric transducer[J].Journal of Shenyang Jianzhu University ( Natural science).2020,36(4):628-636.
• [14] 谷旭东，滕科嘉，史雪梅.基于小波包变换及时间-小波能量谱的振动信号分析研究[J].空间控制技术与应用，2020,46(4):29-33.GU X D,TENG K J,SHI X M.Vibration signal analysis based on wavelet packet transform and time-energy wavelet spectrum[J].Aerospace Control and Application,2020,46(4):29-33.
• [15] KONG Q,FENG Q,SONG G.Water presence detection in a concrete crack using smart aggregates[J].International Journal of Smart and Nano Materials,2015,6(3):149-161.
• [16] 高玉宝，查代奉，江金龙.一种新的最优小波基选择准则及其应用[J].通信技术，2008,41(11):185-187.GAO Y B,ZHA D F,JIANG J L.Selecting criteria and application of optimal wavelet basis regarding stable-distribution signals[J].Communications Technology,2008,41(11):185-187.
• [17] 龚敏，石发才，吴晓东.基于叠加和频谱分析的电子雷管延期时间研究[J].振动与冲击，2019,38(15):134-141.GONG M,SHI F C,WU X D.Delay time of electronic detonators based on superposition and frequency spectral analysis[J].Journal of Vibration and Shock,2019,38(15):134-141.
• [18] 倪博炜.万兴路隧道爆破施工对临近建筑物影响研究[D].重庆：重庆交通大学，2017.NI B W.Study on the influence of wanxing road tunnel blasting vibration on adjacent buildings[D].Chongqing:Chongqing Jiaotong University,2017.