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考虑碳交易的电-热综合能源系统两阶段鲁棒优化低碳经济调度

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电力建设 2024年第6期45卷 58-69页

作者：李欣陈英彰李涵文刘立黄婧琪郭攀锋三峡大学电气与新能源学院湖北省宜昌市443002 智慧能源技术湖北省工程研究中心(三峡大学) 湖北省宜昌市443002 国网重庆市电力公司超高压分公司重庆市400015 湖北能源集团汉江能源发展有限公司湖北省襄阳市441000

为有效应对可再生能源出力波动,实现综合能源系统低碳、经济、鲁棒三者平衡,提出考虑碳交易的电-热综合能源系统两阶段鲁棒优化低碳经济调度模型。首先,构建了配置碳捕获设备的综合能源系统模型。其次,采用可调不确定集合描述风电和光... 详细信息

为有效应对可再生能源出力波动,实现综合能源系统低碳、经济、鲁棒三者平衡,提出考虑碳交易的电-热综合能源系统两阶段鲁棒优化低碳经济调度模型。首先,构建了配置碳捕获设备的综合能源系统模型。其次,采用可调不确定集合描述风电和光伏的出力波动,并以最恶劣情景下成本最小为优化目标,建立了两阶段鲁棒优化调度模型,然后利用列与约束生成算法迭代求解。最后,在调度模型中计及碳交易成本,来限制系统的电能交易以减少间接碳排放,并避免了调度方案的过度保守。结果表明,两阶段鲁棒优化有效提高了系统抵御风险的能力,减少了经济损失;碳交易机制的引入避免了系统过度鲁棒,能够维持低碳运行,实现了系统低碳、经济、鲁棒三者平衡。

关键词：不确定性综合能源系统低碳运行可再生能源鲁棒优化

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山岭隧道衬砌-减震层体系动力响应研究

防灾减灾工程学报 2024年第2期44卷 343-352页

作者：赵旭袁昀黎若寒黄景琦于兆源北京工业大学城市与工程安全减灾教育部重点实验室北京100124 同济大学地下建筑与工程系上海200092 北京科技大学城市地下空间工程北京市重点实验室北京100083 北京城建北方集团有限公司北京101399

为了探寻隧道设置减震层时影响减震层减震性能的关键因素,建立了设置减震层的隧道有限元数值模型,将数值模型与振动台试验进行对比,验证了数值模型的可靠性。改变减震层设计参数和围岩条件,通过对隧道结构的主应变、相对变形率以及围岩... 详细信息

为了探寻隧道设置减震层时影响减震层减震性能的关键因素,建立了设置减震层的隧道有限元数值模型,将数值模型与振动台试验进行对比,验证了数值模型的可靠性。改变减震层设计参数和围岩条件,通过对隧道结构的主应变、相对变形率以及围岩的塑性区进行分析,研究不同参数条件下减震层的减震效果。结果表明:设置减震层后隧道加速度响应的传递函数在15~30 Hz频段范围内减小,说明减震层通过吸收地震波中的高频成分,减小地震波能量向隧道的传递,进而减小隧道的地震响应。参数分析结果表明:减震层弹性模量越小厚度越大,减震层的减震效果越加明显,但隧道结构的相对变形率也随之上升。相比于增加减震层厚度,降低减震层弹性模量对减震效果的提升更为显著。在坚硬围岩中的设置减震层相比于软弱围岩减震效果更显著。

关键词：隧道工程减震层减震性能数值计算动力响应

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碳化硅复合材料的水氧腐蚀机理

硅酸盐学报 2024年第6期52卷 1978-1986页

作者：曾雨琪李归宋阁罗潇黄晶琪陈文博李坚徐友良曹学强中国航发湖南动力机械研究所湖南株洲412000 武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070

为阐明碳化硅复合材料(SiC_(f)/SiC)航空发动机燃气环境中被H_(2)O和O_(2)的腐蚀机理,本工作研究了SiC_(f)/SiC复合材料在水热(无氧)和水氧耦合环境的腐蚀行为。结果表明,SiC_(f)/SiC复合材料连通孔隙是腐蚀介质/产物的进出通道;在200... 详细信息

为阐明碳化硅复合材料(SiC_(f)/SiC)航空发动机燃气环境中被H_(2)O和O_(2)的腐蚀机理,本工作研究了SiC_(f)/SiC复合材料在水热(无氧)和水氧耦合环境的腐蚀行为。结果表明,SiC_(f)/SiC复合材料连通孔隙是腐蚀介质/产物的进出通道;在200℃无氧水热环境中,Si C被水腐蚀是一个体积膨胀过程,形成乳白色产物H_(2)Si O_(3);在1300℃水氧耦合腐蚀环境中,SiC_(f)/SiC复合材料的纤维与界面层被腐蚀,结构变疏松,腐蚀中间产物为H_(2)SiO_(3),最终产物为方石英SiO_(2)。

关键词：碳化硅复合材料水氧腐蚀

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Nonlinear Response of Tunnel Portal under Earthquake Waves with Different Vibration Directions

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Computer Modeling in Engineering & Sciences 2022年第6期131卷 1289-1314页

作者： Hongyun Jiao Mi Zhao jingqi huang Xu Zhao Xiuli Du Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China Beijing Key Laboratory of Urban Underground Space Engineering School of Civil and Resource EngineeringUniversity of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit Beijing University of TechnologyBeijing100124China

Tunnel portal sections often suffer serious damage in strong earthquake *** waves may propagate in different directions,producing various dynamic responses in the tunnel *** on the Galongla tunnel,which is located in a seismic region of China,three-dimensional seismic analysis is conducted to investigate the dynamic response of a tunnel portal subjected to earthquake waves with different vibration *** order to simulate the mechanic behavior of slope rock effectively,an elastoplastic damage model is adopted and applied to ABAQUS software by a self-compiled user material(UMAT)***,the seismic wave input method for tunnel portal is established to realize the seismic input under vertically incident earthquake waves with different vibration directions,e.g.,S waves with a vibration direction perpendicular or parallel to the tunnel axis and P waves with a vibration direction perpendicular to the tunnel *** numerical results indicate that the seismic response and damage mechanisms of the tunnel portal section are related to the vibration direction of the earthquake *** vertically incident S waves running perpendicular to the tunnel axis,the hoop tensile strain at the spandrel and arch foot and the hoop shear strain at the vault and arch bottom are the main contributors to the plastic damage of the *** strain is initially concentrated around the tunnel foot and spandrel,before shifting to the tunnel vault and bottom farther away from the tunnel *** vertically incident S waves running parallel to the tunnel axis,very large hoop shear strain and plastic damage appear at the tunnel *** strain first increases and then decreases with distance from the tunnel *** vertically incident P waves running perpendicular to the tunnel axis,the maximum damage factor of the slope rock and the maximum plastic strain of the tunnel are significantly lower than for S ***,with increasing dista

关键词： Tunnel portal earthquake dynamic numerical analysis vibration direction elastoplastic damage model seismic input method

“家校社”联动赋能民族传统体育发展的理论探索

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冰雪体育创新研究 2024年第6期 176-178页

作者：黄婧琪武佳一上官铖琨中国矿业大学江苏徐州221116

该文通过文献资料法、逻辑分析法等方法对家校社联动赋能民族传统体育发展的路径进行理论探索。该文通过分析“家校社”联动的价值及民族传统体育发展的困境,提出“家校社”联动赋能民族传统体育发展的策略。该文认为“家校社”联动赋... 详细信息

该文通过文献资料法、逻辑分析法等方法对家校社联动赋能民族传统体育发展的路径进行理论探索。该文通过分析“家校社”联动的价值及民族传统体育发展的困境,提出“家校社”联动赋能民族传统体育发展的策略。该文认为“家校社”联动赋能民族传统体育发展的路径应从这四个角度探索:转变“家校社”三方认知观念,达成共促民族传统体育的意识;加强“家校社”三方有效沟通,合理安排分工;整合“家校社”三方民族传统体育优势资源,搭建合作平台;发挥政府统筹作用,完善“家校社”联动发展民族传统体育的制度保障。

关键词： “家校社”联动民族传统体育理论探索

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隧道纵向地震易损性分析

市政技术 2024年第6期42卷 37-45页

作者：赵旭杨宇杰黄景琦曹胜涛北京工业大学城市建设学部北京100124 北京科技大学土木与资源工程学院北京100083 广州颖力科技有限公司广东广州510700

为研究隧道纵向抗震性能,使用改进的地基梁-弹簧非线性分析模型计算隧道纵向地震响应,其中采用PQ-Fiber纤维梁模型模拟隧道纵向的非线性行为,并施加弯矩来考虑隧道与场地之间的切向相互作用。随后,将基于增量动力分析(IDA)方法的结构地... 详细信息

为研究隧道纵向抗震性能,使用改进的地基梁-弹簧非线性分析模型计算隧道纵向地震响应,其中采用PQ-Fiber纤维梁模型模拟隧道纵向的非线性行为,并施加弯矩来考虑隧道与场地之间的切向相互作用。随后,将基于增量动力分析(IDA)方法的结构地震易损性分析方法应用于隧道结构,探究适用于隧道结构的地震动强度指标(IM)。选取12条近场地震记录,用于IDA分析隧道纵向的抗震性能水平。将概率地震需求模型与工程需求参数相结合,建立结构的地震易损性曲线。结果表明,峰值速度(PGV)是适用于隧道纵向抗震性能的地震动强度指标;场地类型对隧道纵向损伤程度的影响最为深远,其中Ⅰ类场地在地震作用下损伤概率最大。此外,将计算所得易损性曲线与经验易损性曲线和横向易损性曲线进行对比分析,验证了模型的可行性,为隧道结构的抗震设计提供了一定的参考。

关键词：圆形隧道纵向抗震性能地震动强度指标增量动力分析易损性曲线

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A nitroreductase-responsive nanoprobe with homogeneous composition and high loading for preoperative non-invasive tumor imaging and intraoperative guidance

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Chinese Chemical Letters 2024年第7期35卷 313-318页

作者： jingqi Xin Shupeng Han Meichen Zheng Chenfeng Xu Zhongxi huang Bin Wang Changmin Yu Feifei An Yu Ren Institute of Medical Engineering Department of BiophysicsSchool of Basic Medical ScienceHealth Science CenterXi'an Jiaotong UniversityXi'an 710061China School of Public Health Health Science CenterXi'an Jiaotong UniversityXi'an 710061China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211816China Department of Breast Surgery the First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061China

Tumor microenvironment(TME)-activatable probes have been proven to effectively increase signal-tobackground ratios(SBRs)and improve the success rate of complete tumor ***,many fluorescence probes have to be loaded into a nanocarrier for tumor targeted delivery,which consequently encounters poor drug loading,heterogeneous composition and non-encapsulated drug aggregates occurred during nanoformulation ***,a nitroreductase(NTR)-activated“OFF-ON”near-infrared fluorescence nanoprobe,named Nano Bodipy,was synthesized by the spontaneous self-assembling of NTRresponsive dye-polyethylene glycol(PEG)amphiphilic polymer in *** NTR-responsive dye acted as the hydrophobic segment in the amphiphilic polymer,yielding a homogeneous composition and a high loading of 12.2 wt%(according to calculation)in the synthesized Nano *** synthesized Nano Bodipy can efficiently accumulate in tumors via the enhanced permeability and retention(EPR)effect,enabling non-invasive tumor-targeted fluorescence imaging and guiding complete tumor *** the synthesized Nano Bodipy entered the tumor cells,they dissociated and were activated by overexpressed *** the real-time fluorescence guide of Nano Bodipy,complete tumor resection surgery was performed successfully.

关键词： Nitroreductase Tumor diagnosis Intraoperative guidance Self-assembly Nanoprobe

Seismic stability of jointed rock slopes under obliquely incident earthquake waves

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Earthquake Engineering and Engineering Vibration 2018年第3期17卷 527-539页

作者： huang jingqi Zhao Mi Xu Chengshun Du Xiuli Jin Liu Zhao Xu School of Civil and Environmental Engineering University of Science and Technology Beijing Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of Technology

Seismic stability of slopes has been traditionally analyzed with vertically propagated earthquake ***,for rock slopes,the earthquake waves might approach the outcrop still with a evidently oblique *** investigate the impact of obliquely incident earthquake excitations,the input method for SV and P waves with arbitrary incident angles is conducted,respectively,by adopting the equivalent nodal force method together with a viscous-spring ***,the input method is introduced within the framework of ABAQUS software and verified by a numerical *** SV and P waves input are considered herein for a 2 D jointed rock *** the jointed rock mass,the jointed material model in ABAQUS software is employed to simulate its behavior as a *** of the study show that the earthquake incident angles have significance on the seismic stability of jointed rock *** larger the incident angle,the greater the risk of slope ***,the stability of the jointed rock slopes also is affected by wave types of earthquakes heavily.P waves induce weaker responses and SV waves are shown to be more critical.

关键词： jointed rock slope seismic stability obliquely incident waves P and SV waves

Nonlinear Seismic Response of Rock Tunnels Crossing Inactive Fault under Obliquely Incident Seismic P Waves

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Journal of Earth Science 2021年第5期32卷 1174-1189页

作者： Hongyun Jiao Xiuli Du Mi Zhao jingqi huang Xu Zhao Wenlong Ouyang Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Urban Underground Space Engineering School of Civil and Resource EngineeringUniversity of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit Beijing University of TechnologyBeijing 100124China

The failure mechanism of tunnels crossing faults is a critical issue for tunnels located in seismically active regions. This study aims to investigate the nonlinear response of rock tunnels crossing inactive faults under obliquely incident seismic P waves. Based on the equivalent nodal force method together with the viscous-spring boundary, an incident method for the site, which contains fault and is subjected to obliquely incident seismic P waves, is developed first. Then, based on the proposed incident method, the nonlinear response and the failure process of the tunnel crossing inactive fault are numerically studied. The numerical results show that the failure mechanism of the tunnel crossing inactive fault can be attributed to the combined action of the seismic waves and its associated fault slippage. Finally, parameter studies are conducted to investigate the effects of the wave impedance ratio of the fault to the surrounding rock and the incident angle of P waves. By the parameter analysis, it can be concluded that:(1) with decreasing the wave impedance ratio of the fault to the surrounding rock, the seismic response of the tunnel increases significantly;(2) the seismic response of the tunnel increases first and then decreases with the increasing of the incident angle of P waves. This study offers the insight for further research on the seismic stability of tunnels crossing inactive faults.

关键词： tunnel inactive fault earthquake P wave nonlinear seismic response