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Frontiers of Structural and Civil Engineering 2022年第8期16卷 962-975页

作者： Zhi-Peng CHEN songye zhu Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

In this paper,the seismic responses and resilience of a novel K-type superelastic shape memory alloy(SMA)self-centring(SC)eccentrically braced frame(EBF)are *** simulation models of the SMA-based SC-EBF and a corresponding equal-stiffness traditional EBF counterpart are first established based on some existing *** twenty-four near-fault ground motions are used to examine the seismic responses of both EBFs under design basis earthquake(DBE)and maximum considered earthquake(MCE)*** fragility and loss analyses are subsequently conducted through incremental dynamic analyses(IDA),and the resilience of the two EBFs are eventually *** resilience assessment basically follows the framework proposed by Federal Emergency and Management Agency(FEMA)with the additional consideration of the maximum residual inter-storey drift ratio(MRIDR).The novel SMA-based SC-EBF shows a much better resilience in the study and represents a promising attractive alternative for future applications.

关键词： shape memory alloy eccentrically braced frame self-centring fragility loss function resilience

Self-Powered Active Vibration Control:Concept,Modeling,and Testing

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Engineering 2022年第4期8卷 126-137页

作者： Jin-Yang Li songye zhu Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China National Rail Transit Electrification and Automation Engineering Technology Research Center(Hong Kong Branch) The Hong Kong Polytechnic UniversityHong Kong 999077China

Despite their superior control performance,active vibration control techniques cannot be widely used in some engineering fields because of their substantial power demand in controlling large-scale *** an innovative solution to this problem,an unprecedented self-powered active vibration control system was developped in this *** topological design,working mechanism,and power flow of the proposed system are presented *** self-powering ability of the system was confirmed based on a detailed power flow analysis of vibration control processes.A self-powered actively controlled actuator was designed and applied to a scaled active vibration isolation *** feasibility and effectiveness of the innovative system were successfully validated through a series of analytical,numerical,and experimental *** setup and control strategy of the proposed system can be readily extended to diversified active vibration control applications in various engineering fields.

关键词： Self-powered active vibration control Energy harvesting Skyhook control Power equilibrium Smart control

Innovative technologies in manufacturing,mechanics and smart civil infrastructure

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International Journal of Smart and Nano Materials 2018年第4期9卷 261-278,I0003页

作者： Ken P.Chong songye zhu Department of Mechanical&Aerospace Engineering George Washington UniversityWashingtonDCUSA Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong SARChina

An overview on converging technologies that are the primary drivers of the 4th Industrial Revolution is presented,followed by new developments in advanced manufacturing,nano-,information-technologies and smart civil infrastructure *** of these transformative technologies is *** are on advanced manufacturing,nano mechanics/materials,sensors,structural control,smart structures/materials,energy harvesting,multi-scale problems and simulation methods.

关键词： Nano-materials smart structures energy harvesting advanced manufacturing simulation and multi-scale problems

Multi-type sensor placement and response reconstruction for structural health monitoring of long-span suspension bridges

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Science Bulletin 2016年第4期61卷 313-329页

作者： You-Lin Xu Xiao-Hua Zhang songye zhu Sheng Zhan Department of Civil and Environmental Engineering The HongKong Polytechnic UniversityHong KongChina College of Civil Engineering Fuzhou UniversityFuzhou 350108China

This study is devoted to the experimental validation of the multi-type sensor placement and response reconstruction method for structural health monitoring of long-span suspension bridges. The method for multi-type sensor placement and response reconstruction is briefly described. A test bed, comprising of a physical model and an updated finite element （P-E） model of a long-span suspension bridge is also concisely introduced. The proposed method is then applied to the test bed; the equation of motion of the test bed subject to ground motion, the objective function for sensor location optimization, the principles for mode selection and multi-type response reconstruction are established. A numerical study using the updated FE model is performed to select the sensor types, numbers, and locations. Subsequently, with the identified sensor locations and some practical considerations, fiber Bragg grating （FBG） sensors, laser displacement transducers, and accelerometers are installed on the physical bridge model. Finally, experimental investigations are conducted to validate the proposed method. The experimental results show that the reconstructed responses using the measured responses from the limited number of multitype sensors agree well with the actual bridge responses. The proposed method is validated to be feasible and effective for the monitoring of structural behavior of longspan suspension bridges.

关键词： Long-span suspension bridges Structural behavior monitoring Multi-type sensorsMulti-type responses Experimental validation

Damage detection of long-span bridges using stress influence lines incorporated control charts

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Science China(Technological Sciences) 2014年第9期57卷 1689-1697页

作者： CHEN ZhiWei CAI QinLin LEI Ying zhu songye Department of Civil Engineering Xiamen University Key Laboratory of Roadway Bridge and Structural Engineering Wuhan University of Technology Department of Civil and Environmental Engineering the Hong Kong Polytechnic University

Numerous long-span bridges have been built throughout the world in recent *** bridges are progressively damaged by continuous usage throughout their long service *** failure of local structural components is detrimental to the performance of the entire bridge,furthermore,detecting the local abnormality at an early stage is *** paper explores a novel damage detection method for long-span bridges by incorporating stress influence lines(SILs)in control charts,and validates the efficacy of the method through a case study of the Tsing Ma Suspension *** indices based on SILs are subsequently proposed and applied to hypothetical damage scenarios in which one or two critical bridge components are subjected to severe *** comparison study suggests that the first-order difference of SIL change is an accurate indicator for location of the *** some extent,different levels of damage can be quantified by using SILs incorporating with X-bar control *** of this study indicate that the proposed SIL-based method offers a promising technique for damage detection in long-span bridges.

关键词： damage detection long-span bridges stress influence line control chart structural health monitoring

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隔震结构震后复位能力研究

工程科学与技术 2023年第5期55卷 5-13页

作者：王斌张展宏陈鹏朱松晔戴靠山四川大学土木工程系四川成都610207 四川大学灾后重建与管理学院四川成都610041 香港理工大学土木及环境工程系中国香港999077

隔震结构由于隔震层的刚度较小,结构的变形绝大多数集中在隔震层。在强震作用下,隔震装置虽然能够很好地满足大变形的需求,但是变形结束后,在某些地震作用下隔震装置很难自动复位到初始状态。隔震层明显的残余变形可能会导致主体结构正... 详细信息

隔震结构由于隔震层的刚度较小,结构的变形绝大多数集中在隔震层。在强震作用下,隔震装置虽然能够很好地满足大变形的需求,但是变形结束后,在某些地震作用下隔震装置很难自动复位到初始状态。隔震层明显的残余变形可能会导致主体结构正常使用功能的中断,难以保证隔震装置在多次余震或未来地震中继续发挥作用,并且在震后难以修复到初始位置。基于此,本文对比分析当前设计规范中对隔震支座复位能力的规定;以超弹性形状记忆合金(SMA)良好的变形自恢复能力为基础,结合铅芯橡胶隔震支座(LRB),提出自复位隔震支座(SMA-LRB);通过压剪往复加载试验,对比传统LRB与SMA-LRB的力学行为;对基于不同规范限值的LRB及SMA-LRB的单自由度体系进行非线性时程分析。结果表明:SMA-LRB具有良好的自复位能力;在满足规范设计的情况下,LRB隔震体系在震后仍可能出现较大的残余变形;残余变形值与隔震层的最大变形值无直接关系,在中等地震作用下(如设防烈度地震)可能更容易出现残余变形;SMA-LRB隔震体系增强了隔震结构震后的复位能力,能有效减小震后残余变形。

关键词：隔震结构铅芯橡胶支座自复位形状记忆合金残余变形正常使用功能

考虑尾流效应的风力机组输出功率和疲劳性能模拟

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空气动力学学报 2022年第4期40卷 210-219页

作者：张建左浩然元国凯朱松晔香港理工大学土木及环境工程学系中国香港九龙红磡中国能源建设集团广东省电力设计研究院有限公司广州510663

上游风力机旋转引起的尾流效应会对下游风力机的输出功率和疲劳特性产生显著影响。本文选用美国国家可再生能源实验室开发的***开源程序,基于准稳态条件下雷诺平均Navier-Stokes薄剪力层近似解,研究了不同布局情况下处于尾流场风力机的... 详细信息

上游风力机旋转引起的尾流效应会对下游风力机的输出功率和疲劳特性产生显著影响。本文选用美国国家可再生能源实验室开发的***开源程序,基于准稳态条件下雷诺平均Navier-Stokes薄剪力层近似解,研究了不同布局情况下处于尾流场风力机的功率特性和疲劳性能。结果表明,尾流场中平均风速与湍流强度的变化规律不一致。尾流场中风力机的输出功率与风速变化相对应,随着距离增加呈现单调增长的趋势。参考乌鲁木齐和西宁两地的实测风速概率分布曲线,确定了叶根和塔底位置的疲劳寿命。叶片在低风速区间,风速损失对疲劳性能的影响程度相比于湍流强度的影响更为明显。因此,对于水平面内不同布局,处于尾流场中的风力机的叶片疲劳性能有一定程度的改善,但在(X=4.0D,Y=0D)位置处疲劳寿命出现明显缩短。相比于叶片而言,水平面内不同位置(除Y=1.5D平面外),塔底疲劳寿命均存在不同程度的衰减。上述结论可为大型风电场布局设计和优化布置提供理论依据和设计参考。

关键词：尾流效应风速分布湍流强度输出功率疲劳性能

考虑叶片桨距角和干扰效应的大型风力机体系风致效应研究

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太阳能学报 2021年第6期42卷 280-288页

作者：柯世堂王晓海王同光朱松晔南京航空航天大学土木工程系南京210016 南京航空航天大学江苏省风力机设计高技术研究重点实验室南京210016 香港理工大学土木及环境工程学系香港999077

以某5 MW大型风力机为对象,首先基于大涡模拟(LES)技术进行考虑不同叶片桨距角影响的大型风力机体系非定常流场和气动力模拟,并与规范及实测结果进行对比,验证大涡模拟的有效性。在此基础上,结合有限元方法系统分析不同叶片桨距角下风... 详细信息

以某5 MW大型风力机为对象,首先基于大涡模拟(LES)技术进行考虑不同叶片桨距角影响的大型风力机体系非定常流场和气动力模拟,并与规范及实测结果进行对比,验证大涡模拟的有效性。在此基础上,结合有限元方法系统分析不同叶片桨距角下风力机塔架-叶片耦合体系的动力特性、风振响应、屈曲稳定性能和极限承载能力。研究表明:0°叶片桨距角下塔架显著干扰区段迎风面0°处出现负压,叶片顺风向位移响应极值最大值为3.98 m。随着叶片桨距角的增大,塔顶径向位移、各叶片顺风向位移和叶根剪力的均值和均方差均呈逐渐减小的趋势,且叶片桨距角在30°~50°范围内出现显著变化。叶片桨距角为0°时风力机体系风致响应最为不利,当叶片桨距角为90°时,体系屈曲性能和极限承载力最为不利。

关键词：风力机大涡模拟风振响应叶片桨距角气动力分布稳定性能

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海上风机灾害分析及健康监测技术综述

南方能源建设 2018年第2期5卷 47-59页

作者：朱松晔朱子默柯世堂香港理工大学土木及环境工程学系南京航空航天大学土木工程系南京210016

[目的]风能是近年来飞速发展的可再生新能源。在过去的20年中,风机总装机量在全球范围内有了大幅度地增长。由于暴露在恶劣的自然环境中,海上风机尤其容易受到多种灾害的共同干扰。针对常见灾害对风机结构的影响进行了系统性地总结分析... 详细信息

[目的]风能是近年来飞速发展的可再生新能源。在过去的20年中,风机总装机量在全球范围内有了大幅度地增长。由于暴露在恶劣的自然环境中,海上风机尤其容易受到多种灾害的共同干扰。针对常见灾害对风机结构的影响进行了系统性地总结分析。[方法]首先介绍了强台风和中度台风引起的风机叶片破坏和塔架整体倒塌的事故,对事故现象及分析方法做了初步探讨。除此之外,考虑中国作为地震多发带以及特殊的海上环境,对海上风机在波浪和地震荷载作用下的动力响应及灾害预测也进行了系统阐述。针对台风、地震和波浪的不同荷载模拟方法,包括考虑线性和非线性特征的不同数学模型,在相关研究领域被相继提出;相应的风机结构损伤分析也包括了动力学常见的时域分析和频谱分析。[结果]通过采取不同灾害指标,对于不同荷载及工况下的分析表明,极端风速是影响风机结构安全性的最关键因素。随着结构健康监测技术在土木基础设施中的成功运用,其重要性实用性日益受到关注。[结论]系统阐述了土木结构健康监测的原理,成功实例,以及相应的传感技术。并进而介绍了健康监测技术在风电领域的发展与应用。有些局部损伤探测已经被工业领域成功实施并取得了良好的效果。值得注意的是,过往的研究主要集中于对风机局部构件的健康检测方法。针对风机结构稳定性安全性的整体检测将会是未来研究工作的重点。

关键词：海上风机灾害分析结构健康监测

行为治疗和健康教育在精神分裂症急性期的应用价值

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中国健康心理学杂志 2018年第8期26卷 1136-1138页

作者：王松烨朱玉星魏炜河南省驻马店市第二人民医院

目的：探讨行为治疗和健康教育在精神分裂症急性期的临床应用价值。方法：选取我院2015年3月-2017年3月收治的100例精神分裂症急性期患者为研究对象,根据患者入院顺序将其分为对照组和观察组各50例。对照组患者给予抗精神药物利培酮治... 详细信息

目的：探讨行为治疗和健康教育在精神分裂症急性期的临床应用价值。方法：选取我院2015年3月-2017年3月收治的100例精神分裂症急性期患者为研究对象,根据患者入院顺序将其分为对照组和观察组各50例。对照组患者给予抗精神药物利培酮治疗、病情监控等常规处理,观察组在对照组基础上给予行为治疗和健康教育,3个月后评估两组干预效果。结果：观察组遵医率78.00%（39/11）、治疗有效率86.00%（43/50）分别较对照组58.00%（29/50）、68.00%（34/50）高,差异有统计学意义（χ~2=4.596,4.574;P〈0.05）;观察组简易生活质量量表（SQLS）心理社会、动机/精力、症状/副反应及总分分别较对照组低,差异有统计学意义（t=-2.838,-2.372,-2.518,-3.449;P〈0.05）。结论：行为治疗和健康教育有助于改善精神分裂症急性期患者的遵医行为和临床疗效,提高预后生活质量。

关键词：精神分裂症利培酮行为治疗健康教育临床价值