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Motor rolling bearing fault diagnosis based on MVMD energy entropy and GWO-SVM 基于MVMD能量熵和GWO-SVM的电机滚动轴承故障诊断
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23046
Jianmeng Tang, Qiaoni Zhao
For motor rolling bearing fault diagnosis, vibration signal analysis is a common method to extract sensitive fault characteristics. In this paper, a newly signal processing method, multivariate variational mode decomposition (MVMD), is proposed to extract features from motor rolling bearings. The MVMD was carried out on the motor rolling bearings state signals of different categories, and the prior parameter K value which had a great influence on the decomposition effect was analyzed. Each component obtained by decomposition was measured in the form of energy entropy (EE), and the measured feature information was classified and identified by support vector machine (SVM) classifier. Meanwhile, the grey wolf optimization (GWO) was used to optimize the parameters of the classifier network to further improve the recognition accuracy. Through the simulation results, it is found that the scheme can achieve 100 % effect on the diagnosis rate of normal working condition, outer ring fault, inner ring fault and rolling element fault under the condition of different load and speed of the motor rolling bearing.
在电机滚动轴承故障诊断中,振动信号分析是提取敏感故障特征的常用方法。本文提出了一种新的信号处理方法——多元变分模式分解(MVMD),用于提取电机滚动轴承的特征。对不同类别的电机滚动轴承状态信号进行了MVMD,分析了对分解效果影响较大的先验参数K值。以能量熵(EE)的形式对分解得到的每个分量进行测量,并通过支持向量机(SVM)分类器对测量到的特征信息进行分类和识别。同时,采用灰狼优化(GWO)对分类器网络的参数进行优化,以进一步提高识别精度。通过仿真结果表明,在电机滚动轴承不同负载和转速的情况下,该方案对电机正常工况、外圈故障、内圈故障和滚动元件故障的诊断率可以达到100%。
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引用次数: 0
Minimum-time lane changing problem of vehicle handling inverse dynamics based on adaptive mesh refinement and collocation optimization method 基于自适应网格细化和配置优化方法的车辆操纵逆动力学最小时间变道问题
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23085
Yingjie Liu, Dawei Cui, Wen Peng
In order to solve the problems of multiple constraints, many different calculations of nonlinear equations which lead to major errors in the process of vehicle lane changing with minimum time, an adaptive mesh refinement and collocation optimization method is proposed. Firstly, the problem of vehicle lane changing with minimum time has been divided into nonlinear programming problems in different grids. The Lagrange interpolation polynomial was used to approximate the solution of the optimization problem in the grid, and the absolute and relative errors were resolved. Then, a mesh was determined for the unsmooth part according to the curvature of the trajectory, and the location and number of meshes were further determined according to the relationship between the maximum relative error and the allowable error. At the same time, the solution accuracy was improved by adding an adaptive calculation to the smooth interval which does not meet the tolerance error. Finally, the simulation example of comparison with the traditional optimization method was proposed. The results showed that the algorithm presented in the paper had a higher solution efficiency under the same calculation accuracy.
为了解决车辆在最短时间内变道过程中存在多约束、多种不同的非线性方程组计算导致较大误差的问题,提出了一种自适应网格细化和配置优化方法。首先,将车辆最短变道问题划分为不同网格中的非线性规划问题。使用拉格朗日插值多项式对网格中的优化问题进行近似求解,并解决了绝对误差和相对误差。然后,根据轨迹的曲率为不光滑部分确定网格,并根据最大相对误差和允许误差之间的关系进一步确定网格的位置和数量。同时,通过在不满足容差误差的平滑区间中添加自适应计算,提高了求解精度。最后,给出了与传统优化方法进行比较的仿真实例。结果表明,在相同的计算精度下,本文提出的算法具有较高的求解效率。
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引用次数: 0
A fault diagnosis method based on dilated convolution and attention for rolling bearing under multiple working conditions and noisy environments 一种基于扩张卷积和注意力的滚动轴承多工况噪声环境故障诊断方法
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23326
Hui Zhang, Shengdong Liu, Ziwei Lv, Zhenlong Sang, Fang Li
As essential equipment in rotating machinery, the fault diagnosis technology of rolling bearings has achieved great success. However, it still suffers from limitations in terms of generalization and noise resistance performance when operating under complex conditions. To accurately identify the fault types of rolling bearings under different loads and nosy environments, a novel intelligent fault diagnosis method is proposed. Firstly, the utilization of dilated convolution expands the network's receptive field, thereby effectively enhancing the scope of fault extraction. Then, by incorporating the Efficient Channel Attention (ECA) in different convolutional layers, the extracted features are adaptively recognized, highlighting important representation information and improving fault diagnosis performance. Finally, the proposed network is utilized for rolling bearing fault diagnosis under diverse operating and noise conditions, and its efficacy is evaluated on various datasets. The experimental results demonstrate that the proposed method exhibits good generalization performance and strong robustness, compared with other methods.
滚动轴承作为旋转机械的重要设备,其故障诊断技术取得了巨大的成功。然而,当在复杂条件下操作时,它在泛化和抗噪声性能方面仍然受到限制。为了准确识别滚动轴承在不同载荷和恶劣环境下的故障类型,提出了一种新的智能故障诊断方法。首先,利用扩张卷积扩大了网络的感受野,从而有效地扩大了故障提取的范围。然后,通过在不同的卷积层中引入有效通道注意(ECA),自适应地识别提取的特征,突出重要的表示信息,提高故障诊断性能。最后,将所提出的网络用于不同运行和噪声条件下的滚动轴承故障诊断,并在各种数据集上评估其有效性。实验结果表明,与其他方法相比,该方法具有良好的泛化性能和较强的鲁棒性。
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引用次数: 0
Optimization of communication performance in wireless seismic monitoring system 无线地震监测系统中通信性能的优化
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23049
Yonghong Fan, Da-wei Han, N. Li
In order to improve the communication performance between different equipment in the seismic detection system, a wireless network system with MIMO (Multiple Input and Multiple Output) characteristics was designed and applied in the paper. On the basis of 5G communication, a new data conversion and transmission model was built, which can improve the rate of signal transmission and reduce the bit error rate and power consumption. For the purpose of power optimization, the overall framework of the network system was improved, of which power characteristics and performance were verified. The conjugate beam was normalized, and the cumulative distribution function under different downlink rates was obtained based on the maximum minimum power control scheme. In order to verify the energy-saving effect of the design, the ADC (Analog-to-Digital Conversion) power model is introduced. Through simulation analysis, the change rules of spectrum efficiency and energy efficiency under different network nodes were obtained. The results show that the normalized conjugate beam can be less affected by the transmission nodes, and the power control is more reliable under the same conditions. The research and application of this subject can significantly improve the wireless communication performance of the seismic monitoring system, reduce the power consumption of network equipment, improve the data transmission efficiency, and provide strong technical support for seismic prediction and data analysis. Through the test of artificial earthquake, it is verified that the communication scheme designed in this paper has higher transmission efficiency and lower bit error rate, and is very suitable for the long-distance transmission of seismic signals.
为了提高地震探测系统中不同设备之间的通信性能,本文设计并应用了一种具有MIMO(多输入多输出)特性的无线网络系统。在5G通信的基础上,建立了一种新的数据转换和传输模型,可以提高信号传输速率,降低误码率和功耗。为了进行功率优化,对网络系统的总体框架进行了改进,验证了网络系统的功率特性和性能。基于最大最小功率控制方案,对共轭波束进行了归一化,得到了不同下行速率下的累积分布函数。为了验证设计的节能效果,介绍了ADC(模数转换)功率模型。通过仿真分析,得出了不同网络节点下频谱效率和能量效率的变化规律。结果表明,在相同条件下,归一化共轭波束受传输节点的影响较小,功率控制更可靠。该课题的研究和应用可以显著提高地震监测系统的无线通信性能,降低网络设备的功耗,提高数据传输效率,为地震预报和数据分析提供强有力的技术支持。通过人工地震的测试,验证了本文设计的通信方案具有较高的传输效率和较低的误码率,非常适合地震信号的远距离传输。
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引用次数: 0
Simulation study of crack parameters’ effects on the vibration characteristics of a bladed disk system 裂纹参数对叶盘系统振动特性影响的仿真研究
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23337
C. Pan, Yuande Dai, Yaocheng Li
As a key component of the turbo machine rotor in harsh operating conditions, high cycle fatigue failure and even cracks are common in bladed disks. In this paper, modal analysis was carried out for a single cracked bladed disk system, the effects of crack depth, crack height and rotating speed on its vibration characteristics were studied by the method of both numerical simulation and orthogonal test, and the effects of crack distribution on the vibration characteristics of multi-crack bladed disk systems were also studied. Finally, some conclusions have been drawn, they provide a fundamental understanding of blade health monitoring and fault prediction, and are important to improve the reliability and safety of turbine operation.
作为涡轮发电机转子的关键部件,叶片盘在恶劣工况下经常出现高周疲劳失效甚至裂纹。本文对单裂纹叶片盘系统进行了模态分析,采用数值模拟和正交试验相结合的方法研究了裂纹深度、裂纹高度和转速对其振动特性的影响,并研究了裂纹分布对多裂纹叶片盘系统振动特性的影响。最后得出了一些结论,为叶片健康监测和故障预测提供了基础认识,对提高汽轮机运行的可靠性和安全性具有重要意义。
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引用次数: 0
Dynamic characteristics of PX single loop gear train considering weak nonlinear factors of intertooth system 考虑齿间系统弱非线性因素的PX单环轮系动态特性
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.23240
Wenting Zhang, Jia-min Liu, Xintao Zhou, Yahui Cui
Due to the non-linear factors of the single loop gear system and the inter-tooth system, is sometimes difficult to establish an accurate nonlinear dynamic model, which leads to the large deviation between the dynamic characteristics and the actual situation. According to the structural characteristics and dynamic mechanism of nonlinear factors, the bond graph power junction with switching characteristics is adopted. This method is used to establish the model of the single loop gear system and the inter-tooth system respectively. On this basis, the amplitude-phase-frequency characteristics of PX single loop gear systems are obtained by numerical simulation analysis. Eventually, the dynamic stability of single loop gear system is judged based on this characteristic index. The study shows that the dynamic stability of PX type single loop gear system is unsteady in the nonlinear state. In addition, it is concluded that when the whole single loop gear system is unstable, its system module also has the same unstability.
由于单环齿轮系统和齿间系统的非线性因素,有时难以建立准确的非线性动力学模型,导致动力学特性与实际情况之间存在较大偏差。根据非线性因素的结构特点和动力学机理,采用了具有开关特性的键合图功率结。该方法分别用于建立单齿圈齿轮系统和齿间齿轮系统的模型。在此基础上,通过数值模拟分析,得到了PX单环齿轮系统的幅相频特性。最后,基于该特性指标对单环齿轮系统的动态稳定性进行了评判。研究表明,PX型单环齿轮系统在非线性状态下的动力稳定性是不稳定的。此外,还得出结论,当整个单环齿轮系统不稳定时,其系统模块也具有同样的不稳定性。
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引用次数: 0
Rolling bearing fault diagnosis method based on ELMD hybrid feature extraction and wavelet neural network 基于ELMD混合特征提取和小波神经网络的滚动轴承故障诊断方法
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-08-01 DOI: 10.21595/jve.2023.22884
Heng Yue, Xihui Chen, X. Shi, Wei Lou
Rolling bearings are the most important components in the transmission system of coal mining machinery, and their operating condition significantly impacts the entire mechanical and electrical equipment. Therefore, the fault diagnosis of rolling bearing can effectively ensure the operation reliability of equipment. Given the strong noise, coal impact, and other interference, the vibration signal of the rolling bearing cannot be effectively decomposed, and the fault identification efficiency is low. According to the method based on vibration analysis, this article proposes a rolling bearing fault diagnosis method based on ensemble local mean decomposition (ELMD) hybrid feature extraction and wavelet neural network. ELMD is used to solve the problem of modal aliasing in local mean decomposition (LMD), which can improve the efficiency of LMD. Quantitatively extracting the mixed features of each component and introducing a wavelet neural network for fault type recognition. The experimental results demonstrate that the proposed method has a high accuracy in fault recognition and is an effective fault diagnosis method.
滚动轴承是煤矿机械传动系统中最重要的部件,其运行状态对整个机电设备影响很大。因此,滚动轴承的故障诊断可以有效地保证设备的运行可靠性。由于存在强噪声、煤冲击等干扰,滚动轴承振动信号无法有效分解,故障识别效率较低。根据基于振动分析的方法,提出了一种基于集成局部平均分解(ELMD)混合特征提取和小波神经网络的滚动轴承故障诊断方法。将ELMD用于解决局部均值分解(LMD)中的模态混叠问题,提高了LMD的效率。定量提取各分量的混合特征,引入小波神经网络进行故障类型识别。实验结果表明,该方法具有较高的故障识别精度,是一种有效的故障诊断方法。
{"title":"Rolling bearing fault diagnosis method based on ELMD hybrid feature extraction and wavelet neural network","authors":"Heng Yue, Xihui Chen, X. Shi, Wei Lou","doi":"10.21595/jve.2023.22884","DOIUrl":"https://doi.org/10.21595/jve.2023.22884","url":null,"abstract":"Rolling bearings are the most important components in the transmission system of coal mining machinery, and their operating condition significantly impacts the entire mechanical and electrical equipment. Therefore, the fault diagnosis of rolling bearing can effectively ensure the operation reliability of equipment. Given the strong noise, coal impact, and other interference, the vibration signal of the rolling bearing cannot be effectively decomposed, and the fault identification efficiency is low. According to the method based on vibration analysis, this article proposes a rolling bearing fault diagnosis method based on ensemble local mean decomposition (ELMD) hybrid feature extraction and wavelet neural network. ELMD is used to solve the problem of modal aliasing in local mean decomposition (LMD), which can improve the efficiency of LMD. Quantitatively extracting the mixed features of each component and introducing a wavelet neural network for fault type recognition. The experimental results demonstrate that the proposed method has a high accuracy in fault recognition and is an effective fault diagnosis method.","PeriodicalId":49956,"journal":{"name":"Journal of Vibroengineering","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47082766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic response analysis of scraper conveyor under the condition of chain broken 刮板输送机断链条件下的动态响应分析
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-07-23 DOI: 10.21595/jve.2023.23192
C. Xie, Zhi-Xiang Liu, M. Xie
In view of the fact that the traditional study of the chain breaking condition of the scraper conveyor only considers the case of two-way simultaneous chain breaking, this paper mainly studies the single-side chain breaking condition and its influence on the longitudinal vibration and swing vibration characteristics of the scraper chain system. Using the tension calculation principle of the point-by-point tension method, each section of the scraper in the study area is taken as a unit. A coupled dynamic model of longitudinal and oscillating vibration of scrapers is established and connected with Voigt model. The dynamic response laws of the longitudinal and oscillating vibration of the scraper before and after the chain fracture under different transportation conditions are numerically simulated. The calculation results show that when there is material behind the broken chain, the longitudinal tension of the chain and the oscillating vibration of the scraper reach the maximum value, and the chain speed fluctuation reaches 543.1 % compared with the normal operating conditions. Only when there is material in front of the broken chain, the longitudinal tension mutation of the chain and the oscillating vibration value of the scraper are weaker than those of the previous working conditions. When there are materials at the front and back of the broken chain, the sudden change of the longitudinal tension of the chain and the oscillating vibration value of the scraper are the minimum, but they also reach twice the normal working condition, and the chain speed fluctuation reached 194.4 %. The research results of this paper provide a theoretical basis for grasping the operation status of the scraper conveyor in the coal mine and predicting the life of the scraper conveyor.
鉴于传统的刮板输送机断链条件研究只考虑双向同时断链的情况,本文主要研究单侧断链条件及其对刮板链系统纵向振动和摆动振动特性的影响。利用逐点张力法的张力计算原理,将研究区内刮板的每一段作为一个单元。建立了刮板纵向振动和振动的耦合动力学模型,并与Voigt模型相联系。数值模拟了不同运输条件下刮板断链前后的纵向振动和振荡的动态响应规律。计算结果表明,当断链后有物料时,链条的纵向张力和刮板的振动达到最大值,与正常工况相比,链条速度波动达到543.1%。只有当断链前方有物料时,链条的纵向张力突变和刮板的振荡振动值才比以前的工况弱。当断链前后有物料时,链条纵向张力的突变和刮板的振荡振动值最小,但也达到正常工况的两倍,本文的研究成果为掌握煤矿刮板输送机的运行状况和预测刮板输送机的使用寿命提供了理论依据。
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引用次数: 0
Study of slope integral extension mode decomposition method for bearing-nonlinear vibration signal 轴承非线性振动信号的斜率积分延模分解方法研究
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-07-22 DOI: 10.21595/jve.2023.23197
Yuanjun Dai, Weiqiang Huang, Kunju Shi
This study aims to solve the problem of extreme point ambiguity caused by energy instability at the signal end. Thus, an adaptive nonlinear signal decomposition method based on motion energy accumulation division is proposed, namely slope integral extension mode decomposition (SIEMD). The proposed method considers the fluctuation rate and vibration energy between the peaks of the waveform as its scale. Firstly, the comprehensive index is defined to adaptively select the ideal interval, and the extension characteristics of the waveform signal are obtained. Secondly, the energy of the waveform interval is iterated. Hence, the optimal extension waveform is fitted by combining the edge position information of the curve. The experimental part verifies that the method can extract 92 % of the fault information, and verifies that the proposed method overcomes the limitation of the previous one-dimensional signal waveform dimension. Moreover, from the perspective of signal energy, it eliminates the false information of the intrinsic modal function (IMF) components, more suitable for the randomness of the signal, thereby providing a new way for fault feature extraction.
本研究旨在解决信号端能量不稳定导致的极值模糊问题。因此,提出了一种基于运动能量累积划分的自适应非线性信号分解方法,即斜率积分扩展模分解(SIEMD)。所提出的方法将波形峰值之间的波动率和振动能量作为其尺度。首先,定义综合指标,自适应地选择理想区间,得到波形信号的扩展特性。其次,对波形区间的能量进行迭代。因此,通过组合曲线的边缘位置信息来拟合最佳扩展波形。实验部分验证了该方法能够提取92%的故障信息,并验证了所提出的方法克服了以往一维信号波形维数的限制。此外,从信号能量的角度来看,它消除了固有模态函数(IMF)分量的虚假信息,更适合信号的随机性,从而为故障特征提取提供了一种新的方法。
{"title":"Study of slope integral extension mode decomposition method for bearing-nonlinear vibration signal","authors":"Yuanjun Dai, Weiqiang Huang, Kunju Shi","doi":"10.21595/jve.2023.23197","DOIUrl":"https://doi.org/10.21595/jve.2023.23197","url":null,"abstract":"This study aims to solve the problem of extreme point ambiguity caused by energy instability at the signal end. Thus, an adaptive nonlinear signal decomposition method based on motion energy accumulation division is proposed, namely slope integral extension mode decomposition (SIEMD). The proposed method considers the fluctuation rate and vibration energy between the peaks of the waveform as its scale. Firstly, the comprehensive index is defined to adaptively select the ideal interval, and the extension characteristics of the waveform signal are obtained. Secondly, the energy of the waveform interval is iterated. Hence, the optimal extension waveform is fitted by combining the edge position information of the curve. The experimental part verifies that the method can extract 92 % of the fault information, and verifies that the proposed method overcomes the limitation of the previous one-dimensional signal waveform dimension. Moreover, from the perspective of signal energy, it eliminates the false information of the intrinsic modal function (IMF) components, more suitable for the randomness of the signal, thereby providing a new way for fault feature extraction.","PeriodicalId":49956,"journal":{"name":"Journal of Vibroengineering","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49080692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Longitudinal deformation of Shield tunnel based on construction monitoring data 基于施工监测数据的盾构隧道纵向变形分析
IF 1 Q4 ENGINEERING, MECHANICAL Pub Date : 2023-06-26 DOI: 10.21595/jve.2023.23105
Wenkang Yao
The rapid development of urbanization has changed the traffic and transportation in the central area. The change of the surrounding rock and structural stress state of the project under construction caused by the tunnel construction in the same period has caused great harm to its safe use and casualties. Shield construction technology can achieve safe excavation and lining, with high degree of automation. And it is a relatively common construction method at present. But its adaptability to section size and section environmental conditions is poor. In view of this, from the analysis of construction monitoring data, the study established a longitudinal model considering lateral effects from the perspective of lateral characteristics. It also achieved stress assessment and improvement through lateral deformation calculation, segment ring bolt calculation and formula correction. The experimental results showed that the opening at the circumferential seam of the right line of the test tunnel under this method is 8.9 mm. The radius of curvature is 758 mm, and the safety assessment level of longitudinal deformation is 3. This method can effectively guarantee the safety of shield tunnel construction and has good guiding value for tunnel management and maintenance.
城市化的快速发展改变了中部地区的交通运输。同期隧道施工引起在建工程围岩和结构应力状态的变化,对其安全使用和人员伤亡造成了极大危害。盾构施工技术可以实现安全开挖和衬砌,自动化程度高。它是目前比较常见的一种施工方法。但其对断面大小和断面环境条件的适应性较差。有鉴于此,通过对施工监测数据的分析,本研究从横向特征的角度建立了考虑横向影响的纵向模型。通过横向变形计算、管片环螺栓计算和公式修正,实现了应力评估和改进。试验结果表明,该方法下试验隧道右线环缝开口为8.9mm,曲率半径为758mm,纵向变形安全评价等级为3。该方法能有效地保证盾构隧道施工的安全,对隧道的管理和维护具有良好的指导价值。
{"title":"Longitudinal deformation of Shield tunnel based on construction monitoring data","authors":"Wenkang Yao","doi":"10.21595/jve.2023.23105","DOIUrl":"https://doi.org/10.21595/jve.2023.23105","url":null,"abstract":"The rapid development of urbanization has changed the traffic and transportation in the central area. The change of the surrounding rock and structural stress state of the project under construction caused by the tunnel construction in the same period has caused great harm to its safe use and casualties. Shield construction technology can achieve safe excavation and lining, with high degree of automation. And it is a relatively common construction method at present. But its adaptability to section size and section environmental conditions is poor. In view of this, from the analysis of construction monitoring data, the study established a longitudinal model considering lateral effects from the perspective of lateral characteristics. It also achieved stress assessment and improvement through lateral deformation calculation, segment ring bolt calculation and formula correction. The experimental results showed that the opening at the circumferential seam of the right line of the test tunnel under this method is 8.9 mm. The radius of curvature is 758 mm, and the safety assessment level of longitudinal deformation is 3. This method can effectively guarantee the safety of shield tunnel construction and has good guiding value for tunnel management and maintenance.","PeriodicalId":49956,"journal":{"name":"Journal of Vibroengineering","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46958873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Journal of Vibroengineering
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