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《联合国气候变化框架公约》(UNFCCC) 1

三图法 1

关键脆弱性 1

制度建设 1

南大洋 1

变化性和脆弱性 1

国际谈判 1

基于规则的静态分析技术;软件质量;软件验证;性能改进 1

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政府间气候变化专门委员会(IPCC) 1

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煤矿水害 1

电力系统;脆弱性;连锁故障;多图卷积网络;加权线图 1

碳循环 1

脆弱性指数法 1

西北冰洋 1

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Application of BCP-2007 and UBC-97 in seismic vulnerability assessment of gravity designed RC buildings

Muhammad Usman ALI, Shaukat Ali KHAN, Muhammad Yousaf ANWAR

《结构与土木工程前沿(英文)》 2017年 第11卷 第4期   页码 396-405 doi: 10.1007/s11709-017-0436-4

摘要: Recent earthquakes in Pakistan (Kashmir 2005, Balochistan 2008, and Balochistan 2013) revealed the vulnerability of existing building stock and the deficiencies in the then prevalent Pakistan Seismic Code (PSC-86 (1986)). This study investigates, through an analytical framework, the seismic vulnerability of these and other such buildings, in accordance with the newly developed Building Code of Pakistan – Seismic Provisions 2007 (BCP-SP 07). Detailed failure mode is presented for buildings designed as per the new code. Collapse of structures is predicted for only 8% increase in PGA after moderate damage. A previously developed method, based on Eurocode-8 (2004), is used as baseline. A deficient reinforced concrete frame, typical to local building practices, is analyzed and assessed for vulnerability using the BCP- SP 07 (2007) framework. A comparison is drawn for the same building, based on Eurocode-8 (2004). Derived vulnerability curves show that the previous framework overestimated the damage and hence the vulnerability. Comparison of vulnerability parameters with previous studies show slight difference in performance of buildings.

关键词: Building Code of Pakistan     earthquake engineering     seismic effects     vulnerability assessment of buildings     vulnerability framework    

Seismic vulnerability assessment of water supply network in Tianjin, China

Yanxi CHEN,Zhiguang NIU,Jiaqi BAI,Yufei WANG

《环境科学与工程前沿(英文)》 2014年 第8卷 第5期   页码 767-775 doi: 10.1007/s11783-014-0632-6

摘要: The water supply network (WSN) system is a critical element of civil infrastructure systems. Its complexity of operation and high number of components mean that all parts of the system cannot be simply assessed. Earthquakes are the most serious natural hazard to a WSN, and seismic risk assessment is essential to identify its vulnerability to different stages of damage and ensure the system safety. In this paper, using a WSN located in the airport area of Tianjin in northern China as a case study, a quantitative vulnerability assessment method was used to assess the damage that the water supply pipelines would suffer in an earthquake, and the finite element software ABAQUS and fuzzy mathematic theory were adopted to construct the assessment method. ABAQUS was applied to simulate the seismic damage to pipe segments and components of the WSN. Membership functions based on fuzzy theory were established to calculate the membership of the components in the system. However, to consider the vulnerability of the whole system, fuzzy cluster analysis was used to distinguish the importance of pipe segments and components. Finally, the vulnerability was quantified by these functions. The proposed methodology aims to assess the performance of WSNs based on pipe vulnerabilities that are simulated and calculated by the model and the mathematical method based on data of damage. In this study, a whole seismic vulnerability assessment method for a WSN was built, and these analyses are expected to provide necessary information for a mitigation plan in an earthquake disaster.

关键词: water supply network     seismic vulnerability assessment     finite element     fuzzy mathematics    

Hazard and vulnerability evaluation of water distribution system in cases of contamination intrusion

Kunlun XIN, Tao TAO, Yong WANG, Suiqing LIU

《环境科学与工程前沿(英文)》 2012年 第6卷 第6期   页码 839-848 doi: 10.1007/s11783-012-0409-8

摘要: In this paper, it proposed an index system for hazard and vulnerability evaluations of water distribution networks, based on the simulation of contamination events caused by pollutant injections at different junctions. It attempted to answer the following two questions in the case of contamination events: 1) Which are the most hazardous junctions? 2) Which are the most vulnerable junctions? With EPANET toolkit, it simulated the propagation of the contaminant, and calculated the peak concentration of the contaminant and mass delivered at different nodes. According to types of consumers, different weights were assigned to the consumer nodes for assessing the influence of the contaminant on the consumers. Using the method proposed herein, both the hazard index and vulnerability index were calculated for each node in the pipe network. The presented method was therefore applied to the water network of the city of Zhenjiang, which contains two water plants, two booster pump stations with storage tanks. In conclusion, the response time, the relationships between the peak concentration of contaminant and the total absorption are the most important factors in hazard and vulnerability evaluation of the water distribution network.

关键词: water distribution network     hazard     vulnerability     contaminant accident    

The use of Artificial Neural Networks to estimate seismic damage and derive vulnerability functions for

Tiago Miguel FERREIRA, João ESTÊVÃO, Rui MAIO, Romeu VICENTE

《结构与土木工程前沿(英文)》 2020年 第14卷 第3期   页码 609-622 doi: 10.1007/s11709-020-0623-6

摘要: This paper discusses the adoption of Artificial Intelligence-based techniques to estimate seismic damage, not with the goal of replacing existing approaches, but as a mean to improve the precision of empirical methods. For such, damage data collected in the aftermath of the 1998 Azores earthquake (Portugal) is used to develop a comparative analysis between damage grades obtained resorting to a classic damage formulation and an innovative approach based on Artificial Neural Networks (ANNs). The analysis is carried out on the basis of a vulnerability index computed with a hybrid seismic vulnerability assessment methodology, which is subsequently used as input to both approaches. The results obtained are then compared with real post-earthquake damage observation and critically discussed taking into account the level of adjustment achieved by each approach. Finally, a computer routine that uses the ANN as an approximation function is developed and applied to derive a new vulnerability curve expression. In general terms, the ANN developed in this study allowed to obtain much better approximations than those achieved with the original vulnerability approach, which has revealed to be quite non-conservative. Similarly, the proposed vulnerability curve expression was found to provide a more accurate damage prediction than the traditional analytical expressions.

关键词: Artificial Neural Networks     seismic vulnerability     masonry buildings     damage estimation     vulnerability curves    

极区海洋碳池变化性和脆弱性及其探测工程技术

陈立奇

《中国工程科学》 2009年 第11卷 第10期   页码 79-85

摘要:

利用中国南极考察和北极科学考察在南大洋和西北冰洋开展的连续围绕大气和表层海水pCO2及其相关参数观测和海气CO2通量评估,阐述南大洋和西北冰洋碳池的年际变化性,分析探讨其脆弱性,并展望了极区海洋碳池探测工程技术。

关键词: 碳循环     变化性和脆弱性     南大洋     西北冰洋     探测工程技术    

A step forward towards a comprehensive framework for assessing liquefaction land damage vulnerability

Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU

《结构与土木工程前沿(英文)》 2020年 第14卷 第6期   页码 1476-1491 doi: 10.1007/s11709-020-0670-z

摘要: The unprecedented liquefaction-related land damage during earthquakes has highlighted the need to develop a model that better interprets the liquefaction land damage vulnerability (LLDV) when determining whether liquefaction is likely to cause damage at the ground’s surface. This paper presents the development of a novel comprehensive framework based on select case history records of cone penetration tests using a Bayesian belief network (BBN) methodology to assess seismic soil liquefaction and liquefaction land damage potentials in one model. The BBN-based LLDV model is developed by integrating multi-related factors of seismic soil liquefaction and its induced hazards using a machine learning (ML) algorithm-K2 and domain knowledge (DK) data fusion methodology. Compared with the C4.5 decision tree-J48 model, naive Bayesian (NB) classifier, and BBN-K2 ML prediction methods in terms of overall accuracy and the Cohen’s kappa coefficient, the proposed BBN K2 and DK model has a better performance and provides a substitutive novel LLDV framework for characterizing the vulnerability of land to liquefaction-induced damage. The proposed model not only predicts quantitatively the seismic soil liquefaction potential and its ground damage potential probability but can also identify the main reasons and fault-finding state combinations, and the results are likely to assist in decisions on seismic risk mitigation measures for sustainable development. The proposed model is simple to perform in practice and provides a step toward a more sophisticated liquefaction risk assessment modeling. This study also interprets the BBN model sensitivity analysis and most probable explanation of seismic soil liquefied sites based on an engineering point of view.

关键词: Bayesian belief network     liquefaction-induced damage potential     cone penetration test     soil liquefaction     structural learning and domain knowledge    

Assessment of robustness of structures: Current state of research

Colin BRETT, Yong LU

《结构与土木工程前沿(英文)》 2013年 第7卷 第4期   页码 356-368 doi: 10.1007/s11709-013-0220-z

摘要: The concept of structural robustness and relevant design guidelines have been in existence in the progressive collapse literature since the 1970s following the partial collapse of the Ronan Point apartment building; however, in the more general context, research on the evaluation and enhancement of structural robustness is still relatively limited. This paper is aimed to provide a general overview of the current state of research concerning structural robustness. The focus is placed on the quantification and the associated evaluation methodologies, rather than specific measures to ensure prescriptive robustness requirements. Some associated concepts, such as redundancy and vulnerability, will be discussed and interpreted in the general context of robustness such that the corresponding methodologies can be compared quantitatively using a comparable scale. A framework methodology proposed by the authors is also introduced in line with the discussion of the literature.

关键词: structural robustness     abnormal exposure     vulnerability     collapse     consequence    

连锁故障中电力系统脆弱性的多图卷积网络分析 Research Article

Supaporn LONAPALAWONG1,陈长胜2,王灿3,陈为1

《信息与电子工程前沿(英文)》 2022年 第23卷 第12期   页码 1848-1861 doi: 10.1631/FITEE.2200035

摘要: 分析电力系统在连锁故障中的薄弱环节是电力系统分析领域极具挑战的难题。电力系统领域的传统分析方法虽能发现一些简单的传播规律,但却难以捕捉不同运行条件下的复杂细节。近年来的研究引入了深度学习算法来解决这一难题。然而,现有基于深度学习的方法大多仅从拓扑层面考虑电力系统的网架结构,未能充分考虑空间信息(如电距离)以提高图卷积过程的精确度。鉴于此,本文提出一种新型电力系统加权线图,综合考虑电力系统拓扑结构和空间信息,大幅优化线图的边权分配。此外,本文提出一种基于图分类任务的多图卷积网络(MGCN),在保留电力系统空间相关性的同时有效捕获物理元件之间的关联。经验证,该模型能够在具有额外拓扑特征的建模系统中保持理想精度,从而更好地分析存在并行输电线路的复杂连锁故障。最后,本文采用逐层相关传播方法解释MGCN,并量化了模型分类的贡献因子,有效提升模型的可解释性。

关键词: 电力系统;脆弱性;连锁故障;多图卷积网络;加权线图    

Liquefaction assessment using microtremor measurement, conventional method and artificial neural network (Case study: Babol, Iran)

Sadegh REZAEI,Asskar Janalizadeh CHOOBBASTI

《结构与土木工程前沿(英文)》 2014年 第8卷 第3期   页码 292-307 doi: 10.1007/s11709-014-0256-8

摘要: Recent researchers have discovered microtremor applications for evaluating the liquefaction potential. Microtremor measurement is a fast, applicable and cost-effective method with extensive applications. In the present research the liquefaction potential has been reviewed by utilization of microtremor measurement results in Babol city. For this purpose microtremor measurements were performed at 60 measurement stations and the data were analyzed by suing Nakmaura’s method. By using the fundamental frequency and amplification factor, the value of vulnerability index ( ) was calculated and the liquefaction potential has been evaluated. To control the accuracy of this method, its output has been compared with the results of Seed and Idriss [ ] method in 30 excavated boreholes within the study area. Also, the results obtained by the artificial neural network (ANN) were compared with microtremor measurement. Regarding the results of these three methods, it was concluded that the threshold value of liquefaction potential is . On the basis of the analysis performed in this research it is concluded that microtremors have the capability of assessing the liquefaction potential with desirable accuracy.

关键词: liquefaction     microtremor     vulnerability index     artificial neural networks (ANN)     microzonation    

Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

《结构与土木工程前沿(英文)》 2020年 第14卷 第1期   页码 241-266 doi: 10.1007/s11709-019-0560-4

摘要: The present study investigates the vulnerability assessment of the prototype revised Mandatory Rule of Thumb (MRT) buildings initially designed and detailed for three storeys bare frame building; later modified through variable number of storeys (three, four, and five) and different arrangement of infill walls (bare frame, soft-storey, irregular infilled, and fully infilled). The application of infill walls increases the fundamental frequencies, stiffness, and maximum strength capacity, but reduces the deformation capability than the bare frame building. The vulnerability was also reduced through infill walls, where the probability of exceeding partial-collapse and collapse damage reduced by 80% and 50%, respectively. Furthermore, the increased in storeys (three to five) also increases the failure probability, such that partial-collapse and collapse for fully infilled increases by almost 55% and 80%, respectively. All obtained results and discussions concluded that the structural sections and details assigned for MRT building is not sufficient if considered as bare frame and soft-storey. And increase in number of storeys causes building highly vulnerable although the infill walls were considered.

关键词: mid-rise buildings     revised NBC 205: 2012     masonry infill walls     configurations of infill walls     vulnerability assessment and inter-storey drift    

CORMAND2——针对工业机器人的欺骗攻击 Article

Hongyi Pu,Liang He,Peng Cheng,Jiming Chen,Youxian Sun

《工程(英文)》 2024年 第32卷 第1期   页码 186-202 doi: 10.1016/j.eng.2023.01.013

摘要:

Industrial robots are becoming increasingly vulnerable to cyber incidents and attacks, particularly with the dawn of the Industrial Internet-of-Things (IIoT). To gain a comprehensive understanding of these cyber risks, vulnerabilities of industrial robots were analyzed empirically, using more than three million communication packets collected with testbeds of two ABB IRB120 robots and five other robots from various Original Equipment Manufacturers (OEMs). This analysis, guided by the confidentiality–integrity–availability (CIA) triad, uncovers robot vulnerabilities in three dimensions: confidentiality, integrity, and availability. These vulnerabilities were used to design Covering Robot Manipulation via Data Deception (CORMAND2), an automated cyber–physical attack against industrial robots. CORMAND2 manipulates robot operation while deceiving the Supervisory Control and Data Acquisition (SCADA) system that the robot is operating normally by modifying the robot’s movement data and data deception. CORMAND2 and its capability of degrading the manufacturing was validated experimentally using the aforementioned seven robots from six different OEMs. CORMAND2 unveils the limitations of existing anomaly detection systems, more specifically the assumption of the authenticity of SCADA-received movement data, to which we propose mitigations for.

关键词: Industrial robots     Vulnerability analysis     Deception attacks     Defenses    

SHM-based F-AHP bridge rating system with application to Tsing Ma Bridge

Qi LI, You-lin XU, Yue ZHENG, An-xin GUO, Kai-yuen WONG, Yong XIA

《结构与土木工程前沿(英文)》 2011年 第5卷 第4期   页码 465-478 doi: 10.1007/s11709-011-0135-5

摘要: This paper aims at developing a structural health monitoring (SHM)-based bridge rating method for bridge inspection of long-span cable-supported bridges. The fuzzy based analytic hierarchy approach is employed, and the hierarchical structure for synthetic rating of each structural component of the bridge is proposed. The criticality and vulnerability analyses are performed largely based on the field measurement data from the SHM system installed in the bridge to offer relatively accurate condition evaluation of the bridge and to reduce uncertainties involved in the existing rating method. The procedures for determining relative weighs and fuzzy synthetic ratings for both criticality and vulnerability are then suggested. The fuzzy synthetic decisions for inspection are made in consideration of the synthetic ratings of all structural components. The SHM-based bridge rating method is finally applied to the Tsing Ma suspension bridge in Hong Kong as a case study. The results show that the proposed method is feasible and it can be used in practice for long-span cable-supported bridges with SHM system.

关键词: structural health monitoring (SHM)     bridge rating method     fuzzy based analytic hierarchy approach     criticality and vulnerability rating     Tsing Ma Bridge    

基于改进规则检查静态分析技术的高效脆弱性检测方法 Article

Deng CHEN,Yan-duo ZHANG,Wei WEI,Shi-xun WANG,Ru-bing HUANG,Xiao-lin LI,Bin-bin QU,Sheng JIANG

《信息与电子工程前沿(英文)》 2017年 第18卷 第3期   页码 332-345 doi: 10.1631/FITEE.1500379

摘要: 静态分析是保障软件开发质量的一种重要方法。通过与软件开发过程集成并进行交互式应用可进一步提升静态分析工具的作用优势。然而,静态分析工具的交互式应用具有高性能和快速响应等要求。为此,本文以基于规则检查技术的静态分析工具作为研究对象,提出一种改进的规则检查算法,旨在提升静态分析工具的性能。该方法首先采用一种领域描述语言构造脆弱性规则的特征对象表达式,然后基于特征对象表达式的运算结果,对脆弱性规则进行过滤。由于一个代码文件通常只包含与部分脆弱性规则相关的错误,通过规则过滤可有效提高规则检查算法的效率,进而提升静态分析的性能。为了对方法可行性及有效性进行评估,方法实现过程被集成到开源静态分析工具PMD中并基于扩展后的PMD进行了实验分析。实验结果表明提出的方法可在不损失静态分析检测能力和精度的情况下获得平均28.7%的性能提升。

关键词: 基于规则的静态分析技术;软件质量;软件验证;性能改进    

平朔井工开采煤层顶底板水文地质条件评价及防治水对策研究

张忠温,武强,付恩俊,樊振丽

《中国工程科学》 2011年 第13卷 第11期   页码 94-101

摘要:

针对平朔井工一矿所面临的煤层顶底板水害威胁,在分析矿井采矿、地质等条件的基础上,确定了与煤层顶底板水文地质条件相关的若干因素,分别运用“三图法”和“脆弱性指数法”对该矿煤层顶板涌突水条件和底板突水脆弱性进行了评价,并制定了具体的防治水措施。

关键词: 三图法     脆弱性指数法     煤矿水害     防治水对策    

全球2℃温升目标与应对气候变化长期目标的演进

高云, 高翔, 张晓华

《工程(英文)》 2017年 第3卷 第2期   页码 272-278 doi: 10.1016/J.ENG.2017.01.022

摘要:

《巴黎协定》提出把全球平均地表气温升幅控制在较工业化前水平的2°C 之内,并努力限制在1.5°C之内。这是第一个使“全球2°C 温升目标”具备法律效力的国际条约,《联合国气候变化框架公约》第二条关于最终目标的定性表述,至此演进为《巴黎协定》第二条包含具体数值的全球温升目标。从政府间气候变化专门委员会(IPCC) 第二次评估开始,为《联合国气候变化框架公约》谈判提供有助于确定定量化长期目标的科学信息就成为后续历次评估的重要任务,但由于涉及非科学评估范畴的价值判断,IPCC 从未从科学上认定全球升温到何种程度是不可接受的。应对气候变化长期目标的确定经历了长期的过程,“全球2°C 温升目标”是建立在科学评估基础上的一个政治共识。本文从“全球2°C 温升目标”的由来、IPCC 围绕《联合国气候变化框架公约》第二条开展的系列评估,以及不同政治层面对温升目标的推动等几个方面,分析了国际应对气候变化长期目标的演进过程,及其对未来科学评估、谈判进程和全球低碳发展走向的影响。

关键词: 气候变化     国际谈判     政府间气候变化专门委员会(IPCC)     《联合国气候变化框架公约》(UNFCCC)     长期目标     关键脆弱性     制度建设    

标题 作者 时间 类型 操作

Application of BCP-2007 and UBC-97 in seismic vulnerability assessment of gravity designed RC buildings

Muhammad Usman ALI, Shaukat Ali KHAN, Muhammad Yousaf ANWAR

期刊论文

Seismic vulnerability assessment of water supply network in Tianjin, China

Yanxi CHEN,Zhiguang NIU,Jiaqi BAI,Yufei WANG

期刊论文

Hazard and vulnerability evaluation of water distribution system in cases of contamination intrusion

Kunlun XIN, Tao TAO, Yong WANG, Suiqing LIU

期刊论文

The use of Artificial Neural Networks to estimate seismic damage and derive vulnerability functions for

Tiago Miguel FERREIRA, João ESTÊVÃO, Rui MAIO, Romeu VICENTE

期刊论文

极区海洋碳池变化性和脆弱性及其探测工程技术

陈立奇

期刊论文

A step forward towards a comprehensive framework for assessing liquefaction land damage vulnerability

Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU

期刊论文

Assessment of robustness of structures: Current state of research

Colin BRETT, Yong LU

期刊论文

连锁故障中电力系统脆弱性的多图卷积网络分析

Supaporn LONAPALAWONG1,陈长胜2,王灿3,陈为1

期刊论文

Liquefaction assessment using microtremor measurement, conventional method and artificial neural network (Case study: Babol, Iran)

Sadegh REZAEI,Asskar Janalizadeh CHOOBBASTI

期刊论文

Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

期刊论文

CORMAND2——针对工业机器人的欺骗攻击

Hongyi Pu,Liang He,Peng Cheng,Jiming Chen,Youxian Sun

期刊论文

SHM-based F-AHP bridge rating system with application to Tsing Ma Bridge

Qi LI, You-lin XU, Yue ZHENG, An-xin GUO, Kai-yuen WONG, Yong XIA

期刊论文

基于改进规则检查静态分析技术的高效脆弱性检测方法

Deng CHEN,Yan-duo ZHANG,Wei WEI,Shi-xun WANG,Ru-bing HUANG,Xiao-lin LI,Bin-bin QU,Sheng JIANG

期刊论文

平朔井工开采煤层顶底板水文地质条件评价及防治水对策研究

张忠温,武强,付恩俊,樊振丽

期刊论文

全球2℃温升目标与应对气候变化长期目标的演进

高云, 高翔, 张晓华

期刊论文