摘要：
A new long-span assembly composite floor system for use in multi-column frame-tube structure is presented. The basic assembly unit consists of steel truss keel and profile sheet concrete composite slab, which of the two parts are combined together through shear stud. By means of standardized assembly connection structure, such a new floor system can realize a rapid assembly of floor and support frame. Based on test research of 1/3 scale model, the paper discusses the in-plane mechanical performance of the new floor system. Through loading at the direction of parallel to the assembly slab seam and perpendicular to the assembly slab seam, respectively, the influence of assembly orientation of floor units on the failure modes, distribution and transmission performance of the horizontal loads, and the in-plane stiffness were identified in detail. A numerical model was developed with its input parameters calibrated from full-scale experimental tests. Based on model analysis, the influence of thickness of concrete slab on the in-plane stiffness was discussed.
作者机构：
[Yang, Rihua; Wang, Xinzhong; Yang, Yiming] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.;[Yang, Rihua] Hunan City Univ, Hunan Engn Res Ctr Struct Safety & Disaster Preve, Yiyang 413000, Peoples R China.;[Liu, Peng] Cent South Univ, Sch Civil Engn, Changsha 410013, Peoples R China.
通讯机构：
[Yiming Yang] S;[Peng Liu] A;Authors to whom correspondence should be addressed.<&wdkj&>School of Civil Engineering, Central South University, Changsha 410013, China<&wdkj&>School of Civil Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Authors to whom correspondence should be addressed.
摘要：
To study the effect of the local corrosion of prestressed steel strands on the shear failure mode and shear bearing capacity of concrete beams, unilateral steel strands in four post-tensioning prestressed concrete (PC) beams are corroded, and the shear test of four PC beams are performed. Moreover, a simplified calculation method for the shear bearing capacity of concrete beams with diagonal steel bars is proposed considering the effect of cross-sectional reduction of steel bars, the degradation of mechanical properties, and the cross-sectional damage of concrete. Results shows that the crack propagation mode and failure mode are unrelated to the corrosion of prestressed steel bars when the shear span ratio of beam is the same. The shear capacity of the beam decreases with the increase of corrosion rate, but the decreasing rate is lower than the increasing rate of the corrosion rate. The growth rate of stirrup stress is much greater than that of load after concrete tension and compression loss cracking, and the yield of stirrup can be used as a sign of the ultimate bearing capacity of the beam. In addition, by comparing the experimental and numerical simulation results, the proposed simplified calculation method for the shear bearing capacity of concrete beams is of high accuracy.
通讯机构：
[Jianrong Cai; Qiong Long; Zhaoming Zhou; Jianhui Wu; Jie Yu; Zhixue Li] S;[Xiangjun Jiang] D;School of Information Science and Technology,Hunan Institute of Science and Technology,Yueyang 414006,China<&wdkj&>Department of Traffic Management,Hunan Police Academy,Changsha,China<&wdkj&>School of Civil Engineering,Hunan City University,Yiyang,China
关键词：
Introduction;Materials and Methods;Results;Discussion;Conclusion;Abstract;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interests;Authors’ Contributions;Funding Statement;Acknowledgements;Acknowledgments;Supplementary Materials;Reference;Dataset Description;Dataset Files;Abstract;Introduction;Introduction and Materials;Introduction and Methods;Materials;Materials and Methods;Methods;Results;Discussion;Results and Discussion;Discussion and Conclusion;Results and Conclusion;Conclusion;Conclusions;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interest;Authors’ Contributions;Funding Statement;Acknowledgements;Supplementary Materials;References;Appendix;Abbreviations;Preliminaries;Introduction and Preliminaries;Notation;Proof of Theorem;Proofs;Analysis of Results;Examples;Numerical Example;Applications;Numerical Simulation;Model;Model Formulation;Systematic Palaeontology;Nomenclatural Acts;Taxonomic Implications;Experimental;Synthesis;Overview;Characterization;Background;Experimental;Theories;Calculations;Model Verification;Model Implementation;Geographic location;Study Area;Geological setting;Data Collection;Field Testing;Data and Sampling;Dataset;Literature Review;Related Works;Related Work;System Model;Methods and Data;Experimental Results;Results and Analysis;Evaluation;Implementation;Case Presentation;Case Report;Search Terms;Case Description;Case Series;Background;Limitations;Additional Points;Case;Case 1;Case 2 etc.;Concern Details;Retraction Details;Copyright;Related Articles
摘要：
To make full use of road resources, improve the operation efficiency of the road network system, and alleviate the coexistence between traffic congestion and road resources idle caused by the traffic tidal phenomenon, the impact of the number of lanes on traffic capacity is examined, and the mixed-integer bilevel programming model for reversible lane optimization is established with the aim to minimalize the total travel time of the system. Taking a test road network as an example, the influence of the reversible lane optimization on characteristic values of sections, the route travel time between OD pairs, and the total time of the system are analyzed. The results indicate that the reversible lane optimization can make full use of the idle road resources and make the road network structure match the travel demands better, and the system index after the reversible lane optimization is obviously better than the original system index.
期刊：
FRONTIERS IN EARTH SCIENCE,2022年10:930764 ISSN：2296-6463
通讯作者：
Yang, Z.
作者机构：
[Yang, Xian] Hunan City Univ, Coll Civil Engn, Yiyang, Peoples R China.;[Liu, Yang] Hunan Univ Sci & Technol, Sch Earth Sci & Spatial Informat Engn, Xiangtan, Peoples R China.;[Li, Yongsuo] Hunan City Univ, Hunan Engn Res Ctr Struct Safety & Disaster Preve, Yiyang, Peoples R China.;[Yang, Zeyu] Hunan Urban Construct Coll, Changsha, Peoples R China.
通讯机构：
[Yang, Z.] H;Hunan Urban Construction CollegeChina
关键词：
Pipe-roof Pre-construction Method;pipe cutting and support;Structural stress;Surface subsidence;Field measurement
摘要：
The studies on the steel pipe cutting and support stage in the pipe-roof pre-construction method (PPM) are rare, and their design lacks relevant standards, which is relatively conservative. Based on the Xinleyizhi Station of the Shenyang Metro construction case, MIDAS/GTS is used to study the stress of the original jacking steel pipes, supporting column, and surface subsidence under the influence of different construction parameters in the steel pipe cutting and support process in the PPM. The measured data are consistent with the numerical simulation results, which verifies the reliability of the numerical simulation results. With the increase of the distance between support columns, the maximum Mises stress of the original jacking steel pipe, the axial force of the support column, and the ground settlement gradually increase in a specific range. This indicates that the original design scheme can be optimized.
摘要：
In order to predict the surface subsidence, the improved model slope test was used to record relationship between the time and volumetric water content under constant rainfall intensity. In this study, the volumetric water content is defined as the initial quasi-saturated volumetric water content (theta(iqs)). It is found that when the volumetric water content exceeds the initial quasi-saturated volumetric water content, the increase rate of volumetric water content changes again and promotes displacement. On the other hand, in order to solve the conventional experimental problem, such as the feedback of the sensors in the middle and lower parts is almost the same, making it impossible to grasp the characteristics of each point. During test, the soil layer thickness was set to 300mm to test whether the hypothesis obtained from the previous test results was valid even in the case of model improvement and soil layer thickening. The soil moisture sensors set at 5 locations in the model inclined plane were repeatedly stopped for 4 times before arriving the initial quasi-saturated volumetric water content, it was not performed that displacement occurred during this period. That is to say, in this experiment, no deformation was found before the initial quasi-saturated volume moisture content. The improved test is more complete and accurate, which well verifies the previous results and helps to understand the seepage and slope instability in detail.
作者：
Hu, Zhangqi;Chen, Taohua;Wang, Mengfu;Lu, Weirong;He, Ran
期刊：
Advances in Civil Engineering,2022年2022 ISSN：1687-8086
通讯作者：
Hu, Z.
作者机构：
[He, Ran; Hu, Zhangqi] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.;[Chen, Taohua] Yiyang Cent Hosp, Yiyang 413000, Peoples R China.;[Wang, Mengfu] Hunan Univ, Coll Civil Engn, Changsha 410082, Peoples R China.;[Lu, Weirong] Hunan Univ Sci & Technol, Coll Civil Engn, Xiangtan 411201, Peoples R China.
通讯机构：
[Mengfu Wang; Zhangqi Hu; Weirong Lu; Ran He] C;[Taohua Chen] Y;Yiyang Central Hospital,Yiyang 413000,null,China<&wdkj&>College of Civil Engineering,Hunan University,Changsha 410082,China<&wdkj&>College of Civil Engineering,Hunan City University,Yiyang 413000,China<&wdkj&>College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China
关键词：
Introduction;Materials and Methods;Results;Discussion;Conclusion;Abstract;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interests;Authors’ Contributions;Funding Statement;Acknowledgements;Acknowledgments;Supplementary Materials;Reference;Dataset Description;Dataset Files;Abstract;Introduction;Introduction and Materials;Introduction and Methods;Materials;Materials and Methods;Methods;Results;Discussion;Results and Discussion;Discussion and Conclusion;Results and Conclusion;Conclusion;Conclusions;Data Availability;Additional Points;Ethical Approval;Consent;Disclosure;Conflicts of Interest;Authors’ Contributions;Funding Statement;Acknowledgements;Supplementary Materials;References;Appendix;Abbreviations;Preliminaries;Introduction and Preliminaries;Notation;Proof of Theorem;Proofs;Analysis of Results;Examples;Numerical Example;Applications;Numerical Simulation;Model;Model Formulation;Systematic Palaeontology;Nomenclatural Acts;Taxonomic Implications;Experimental;Synthesis;Overview;Characterization;Background;Experimental;Theories;Calculations;Model Verification;Model Implementation;Geographic location;Study Area;Geological setting;Data Collection;Field Testing;Data and Sampling;Dataset;Literature Review;Related Works;Related Work;System Model;Methods and Data;Experimental Results;Results and Analysis;Evaluation;Implementation;Case Presentation;Case Report;Search Terms;Case Description;Case Series;Background;Limitations;Additional Points;Case;Case 1;Case 2 etc.;Concern Details;Retraction Details;Copyright;Related Articles
作者机构：
[Yang, Rihua; Wang, Xinzhong; Yang, Yiming] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.;[Yang, Rihua] Hunan City Univ, Hunan Engn Res Ctr Struct Safety & Disaster Preve, Yiyang 413000, Peoples R China.;[Zhang, Xuhui] Xiangtan Univ, Sch Civil Engn & Mech, Xiangtan 411105, Peoples R China.
通讯机构：
[Yiming Yang; Xuhui Zhang] S;School of Civil Engineering, Hunan City University, Yiyang 413000, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>School of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China<&wdkj&>Authors to whom correspondence should be addressed.
关键词：
prestressed concrete beam;steel strands;bond slip;experimental study;constructive model
摘要：
In order to study the bond-slip constitutive model between prestressed tendons and concrete, the pull-out tests of single-strand and multi-strands specimens are carried out. The effect of the number of prestressed tendons on the failure mode, slip characteristics and concrete strain of the pull-out specimens are analyzed, and the constitutive models of bond-slip between for single- strand and multi-strand tendons are also proposed. The results show that the bond mechanism between steel strand and concrete is basically similar to that of deformed steel bar, but the slip process of steel strand along the axis direction is accompanied by rotation phenomenon because it is twisted. Moreover, compared with the single-strand prestressed tendon, the average ultimate bond stress of each tendon of the three-strand prestressed tendons decreases by 13.2%. In addition, the calculated result of the pull-out limit load for the single-strand prestressed tendon is only 2% higher than the experimental value, while the corresponding value of three-strand prestressed tendon is only 3.74% lower than the experimental value. This means that the proposed bond-slip models for single- strand and multi-strand tendons have high reliability.
关键词：
Aging structure;Reliability;Resistance;Stochastic degradation;Random field;Gamma process
摘要：
Reasonable assessment of structural resistance degradation and reliability is the premise of formulating targeted maintenance strategy of aging structures. In this paper, a Gamma-based stochastic resistance degradation model is developed by incorporating the spatial degradation into a non-stationary degradation process. Then, based on the hazard-function-based reliability analysis method, a novel reliability assessment approach of aging structures is proposed considering stochastic degradation process of resistance. In addition, a simple case analysis of concrete bridge is used to illustrate the application of the proposed method. The case analysis results show that the resistance degradation presents great discontinuities in time and large spatial variability in the middle and later service period of structures. After 50 years of service, the resistance degradation coefficient considering the effect of spatial degradation process is 13.8% lower than that without consideration in this case. Parametric analyses show that an increase of the shape and scale parameters of mean resistance degradation model will significantly increase the cumulative failure probability of structures. This conclusion is also applicable to the non-stationary vehicle load effect model of case bridge. Additionally, ignoring the spatial variability of resistance degradation and the non-stationary nature of the vehicle load effect will overestimate the reliability of aging structures.
摘要：
The main goal of this study is to investigate the effect of local corrosion at the mid-span region on the flexural behavior of HPS (high-performance steel) beams. Four Q550E HPS beams were designed and subjected to electrochemically accelerated corrosion. The 3D scanning technology was used to analyze the geometric characteristics of corrosion regions. After the four-point flexural test, the relationship between the degradation of flexural behavior and the corrosion ratio or corroded location (right side of pure bending section and lower half of pure bending section) was studied in details. The FE (finite element) model of corroded HPS beams was established and strictly verified by comparing with the tested results. Additionally, different heights and thicknesses of the corroded parts were considered in the FE models. Failure modes and bearing capacity degradation of the HPS beams caused by local corrosion were studied by analyzing above parameters. The results shows that the corrosion at the compressive flange of bending section has a greater influence on the ultimate bearing capacity than tension flange and web. The HPS beam corroded in right side of pure bending section has the most significant compressive flange buckling compared. The failure mode of HPS beams with corrosion in lower half of pure bending section changes from obviously compressive flange buckling and local web yielded to all web yielded with the increase of corrosion ratio. The influence of bottom flange corrosion on remaining critical buckling load of beam is slightly more significant than the ultimate load, but the influence degree of top flange corrosion on above two loads are basically the same.
作者机构：
[Wang, Peng; Li, Yongmei; Liu, Zhenzhong; Tan, Kaixuan; Tian, Yunting; Li, Chunguang] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China.;[Tan, Wanyu] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.;[Huang, Wuyang] Cent South Explorat & Fdn Engn Co Ltd, Wuhan 430081, Peoples R China.
通讯机构：
[Kaixuan Tan] S;School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
pitchblende;pyrite;acid leaching mining;shrinking particle model
期刊：
Magazine of Concrete Research,2022年75(4):163-175 ISSN：0024-9831
通讯作者：
Yiming Yang
作者机构：
[Tang, Huang; Wang, Xinzhong; Yang, Yiming] Hunan City Univ, Sch Civil Engn, Yiyang, Hunan, Peoples R China.;[Yang, Yiming] Minist Educ, Key Lab Safety Control Bridge Engn, Changsha, Hunan, Peoples R China.;[Yang, Yiming] Hunan City Univ, Hunan Engn Res Ctr Struct Safety & Disaster Preve, Yiyang, Hunan, Peoples R China.
通讯机构：
[Yiming Yang ] S;School of Civil Engineering, Hunan City University, Yiyang, Hunan, China<&wdkj&>Key Laboratory of Safety Control of Bridge Engineering, Ministry of Education, Changsha, Hunan, China<&wdkj&>Hunan Engineering Research Center of Structural Safety and Disaster Prevention for Urban Underground Infrastructure, Hunan City University, Yiyang, Hunan, China
关键词：
corroded concrete structures;failure probability;scale of fluctuation;spatial variability;stochastic resistance deterioration
摘要：
A reasonable assessment of the probability of structural failure is essential to ensure the safe performance of corroded reinforced concrete (RC) structures. In this paper, a novel cross-sectional area loss model of corroded steel bars is proposed and the scale of fluctuation of some key parameters is estimated using the semi-variogram function method. A stochastic resistance deterioration model considering the effect of unbalanced corrosion and spatial variability and a time-dependent reliability assessment method of corroded concrete structures (CCSs) are then presented. A simple case analysis of a CCS is used to illustrate the application of the proposed method. The case analysis results show that the cumulative failure probability (CFP) is overestimated using the popular pit area model, while it is underestimated without considering the spatial variability of calculation parameters. Random field parameter analysis shows that an appropriate choice of the element size is very important for the safety evaluation of RC structures. Additionally, compared with a marine atmospheric environment, the CFP of a case study structure in tidal and splash environments was found to be increased by 20.15% and 70.40%, respectively, due to the gradual increase of corrosion current density. Of the three service environments, the splash environment thus has the greatest impact on structural failure probability.
期刊：
Journal of Materials Research and Technology,2022年19:1740-1758 ISSN：2238-7854
通讯作者：
Junbo Sun<&wdkj&>Xiangyu Wang
作者机构：
[Zhang, Genbao] Hunan City Univ, Coll Civil Engn, Yiyang 413000, Hunan, Peoples R China.;[Sun, Junbo] Chongqing Univ, Inst Smart City Chongqing Univ Liyang, Liyang 213300, Jiangsu, Peoples R China.;[Wang, Jiaqing] Nanjing Forestry Univ, Coll Civil Engn, Nanjing 210037, Jiangsu, Peoples R China.;[Zhang, Genbao] Hunan Engn Res Ctr Struct Safety & Disaster Preve, Yiyang 413000, Hunan, Peoples R China.;[Peng, Cheng; Jiang, Zhiwei] Nanjing Inst Technol, Sch Architectural Engn, Nanjing 211167, Peoples R China.
通讯机构：
[Junbo Sun] I;[Xiangyu Wang] S;Institute for Smart City of Chongqing University in Liyang, Chongqing University, Jiangsu, 213300, China<&wdkj&>School of Design and Built Environment, Curtin University, WA 6102, Australia
关键词：
Ecological jute fibers;Waste mineral powders;Sustainable materials;Self-compacting concrete;Microstructures
摘要：
Self-compacting concrete (SCC) mixtures requires a large amount of Portland cement and thus resulting in high CO2 emissions, expanding its application has been in question to environment sustainability. Accordingly, environmental-friendly alternatives to Portland cement in SCC mixtures are deemed necessary for the progress of SCC in construction. In this investigation, treated jute fibers and mineral powders were used to replace cement in SCC mixtures. The effects of fibers and powder contents, fiber treatment, and mineral powder types on the workability and mechanical properties of SCC mixtures were investigated through slump-flow, compressive, and flexural tests. A microstructure was conducted through scanning electron microscopy. It was concluded that mineral powders and jute fibers could significantly improve the workability and mechanical properties of SCC. The microstructure observations demonstrated that the proposed methods are capable of enhancing the mechanical properties of SCC with an optimum fiber content. Specifically, a combination of 0.1% jute fibers and 75 mu m zeolite powders were found to achieve the best mechanical properties. The relevant results supply fundamental reference and background for artificial intelligence and multi-function development for future infrastructure. (C) 2022 The Authors. Published by Elsevier B.V.
通讯机构：
[Changbo Jiang] S;School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China<&wdkj&>Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
GPM constellation satellites;IMERG V06;the Dongting Lake basin;satellite precipitation estimates;precision
摘要：
Precipitation data from ground-based observatories in the Dongting Lake basin are often missing, resulting in large errors in surface precipitation data obtained by interpolation, which affects the accuracy of hydro-meteorological studies. Integrated Multisatellite Retrievals for Global Precipitation Measurement (IMERG) is the main high-resolution precipitation product, which is available to supplement measured missing data. To evaluate the applicability of this product in the Dongting Lake basin at multiple spatial and temporal scales, this paper analyzes daily, monthly, seasonal, annual, and extreme precipitation events of the three latest IMERG precipitation products (IPPs) (IMERG-F, IMERG-E, and IMERG-L) using eight statistical evaluation metrics. We find that the spatial and temporal performance of IMERG precipitation products varies over different time scales and topographic conditions. However, all three metrics (CC, RMSE, and RB) of the IMERG-F precipitation products outperform the IMERG-E and IMERG-L precipitation products for the same period. In the comparison of IMERG and TRMM (Tropical Rainfall Measuring Mission) precipitation products on monthly and seasonal scales, IMERG-F performed the best. IPPs can capture precipitation more accurately on seasonal scales and perform better in winter, indicating good detection of trace precipitation. Both high and low altitudes are not favorable for the satellite detection of extreme precipitation in both general and extreme precipitation events. Overall, the accuracy of IMERG-F with correction delay is slightly better than that of IMERG-E and IMERG-L without correction under near-real-time conditions, which is applicable in the Dongting Lake basin. However, the correction process also exacerbates overestimation of the precipitation extent.
摘要：
The glass fiber-reinforced polymer (GFRP) rebar reinforced cemented soil is widely employed to solve the weak foundation problem led by sludge particularly. The robustness of this structure is highly dependent on the interface bond strength between the GFRP tendon and cemented soils. However, its application is obstructed owing to the deficient studies on the influence factors. Therefore, this study investigates the effects of water content (C-w: 50%-90%), cement proportion (C-c: 6%-30%), and curing period (T (c): 28-90 days) on peak and residual interface bond strengths (T-p and T-t), as well as the unconfined compression strength (UCS). Results indicated that mechanical properties were positively responded to T-c and C-c, while negatively correlated to C-w. Besides, Random Forest (RF), one of the machine learning (ML) models, was developed with its hyperparameters tuned by the firefly algorithm (FA) based on the experimental dataset. The pullout strength was predicted by the ML model for the first time. High correlation coefficients and low root-mean-square errors verified the accuracy of established RF-FA models in this study. Subsequently, a coFA-based multi-objective optimisation firefly algorithm (MOFA) was introduced to optimise tri-objectives between UCS, T-p (or T-t), and cost. The Pareto fronts were successfully acquired for optimal mixture designs, which contributes to the application of GFRP tendon reinforced cemented soil in practice. In addition, the sensitivity of input variables was evaluated and ranked. (C)& nbsp;2022 The Authors. Published by Elsevier B.V.& nbsp;
摘要：
Facing the contradiction between increasing maintenance demand and limited financial, as well as smaller social and environmental impacts, the optimisation of bridge maintenance strategies should be carried out. In this paper, the assessment model of four objectives, including the safety performance, economic, social and environmental impacts, in sustainability criteria are proposed. Moreover, a systematic optimisation framework of maintenance strategy of deteriorating bridges considering sustainability criteria and a novel decision-making method are developed, based on fuzzy analytic hierarchy process (FAHP) and a decision-making algorithm based on linear programming techniques for multidimensional analysis of preference (LINMAP). The case analysis results verify the effectiveness and superiority of the previous optimisation framework, and also show that the final optimal strategy obtained by the proposed decision-making algorithm can reflect the will of experts well. Compare with the essential maintenance, the implementation of preventive maintenance is more conducive to realise the sustainable development of the deteriorating bridges. The sensitivity analysis results show that the monetary discount rate has a greater impact on the life cycle maintenance cost, which is mainly controlled by the total social cost, while the direct maintenance cost only accounts for a small part.
摘要：
The analysis of time-frequency variation and energy refinement characteristics of blasting vibration signals has contributed to understanding the propagation law of blasting vibration wave and reducing the possible losses. Combined with the measured data of tunnel blasting excavation and based on the newly constructed wavelet function, the spectrum distribution and energy refinement characteristics of tunnel blasting vibration signals are deeply explored and studied. The results demonstrated that compared to the Fourier spectrum, the innovative method of scale energy spectrum can not only acquire the dominant frequency of the blasting vibration signals, but also the obtained spectrum curve is smoother and can clearly reflect the change trend of the signal spectrum. The newly constructed biorthogonal wavelet has the characteristics of high vanishing moment, high regularity and matching with the waveform variation of the measured blasting vibration signals, and can describe the subtle variation characteristics of blasting vibration signal frequency. The continuous wavelet transform energy spectrum can reflect the three-dimensional energy distribution of blasting vibration signal in the time-scale domain, and the occurrence time of frequency, the frequency duration interval and time range of blasting vibration signal can also be acquired. Wavelet packet algorithm can precisely calculate the energy distribution of each frequency component in the signal, the tunnel blasting vibration signals (YBJ1, YBJ2) generated near the power tower presents low frequency, while the signals (YBF3,YBF4) far away from the power tower presents relatively high frequency. Measures should be taken to control the vibration and resonance of power tower caused by tunnel blasting. This research is of great significance for recognizing the propagation law of vibration waves, reducing the impact of blasting on surrounding buildings, and ensuring the safety of tunnel construction and surrounding buildings.
