Resilient Cities and Structures最新文献_第10页

Seismic resilience of internet data center building with different disaster mitigation techniques 不同减灾技术下互联网数据中心建筑的抗震能力

Resilient Cities and Structures Pub Date : 2022-06-01 DOI: 10.1016/j.rcns.2022.06.003

Qingxue Shang , Haopeng Zuo , Lihang Wen , Zhen Li , Guoliang Sun , Peng Pan , Tao Wang

{"title":"Seismic resilience of internet data center building with different disaster mitigation techniques","authors":"Qingxue Shang , Haopeng Zuo , Lihang Wen , Zhen Li , Guoliang Sun , Peng Pan , Tao Wang","doi":"10.1016/j.rcns.2022.06.003","DOIUrl":"10.1016/j.rcns.2022.06.003","url":null,"abstract":"<div><p>Internet data center buildings have great importance for maintaining the post-earthquake functionality of telecommunication networks. It is essential to maintain the functionality of internet data center buildings during earthquakes or recover immediately after earthquakes, which is referred to as seismic resilience. In this study, a seismic resilience assessment framework based on the Chinese code GB/T 38591-2020 is introduced first. The seismic damage and post-earthquake repair of both structural components and non-structural components are considered in the resilience assessment framework. A method for post-earthquake functionality loss quantification is proposed based on damage state and functionality loss of component. The subsystem level and system level functionality loss can be obtained by an integration principle. The seismic resilience of a typical internet data center building was evaluated to demonstrate the effectiveness of the proposed method. To enhance the seismic resilience level, different disaster mitigation techniques including the energy dissipation technology using buckling restrained braces and the base-isolation technology using lead-rubber bearings are adopted. The seismic resilience is quantified and the corresponding seismic resilience curves under different earthquake intensities are developed based on evaluation results.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 2","pages":"Pages 42-56"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000230/pdfft?md5=e05dba8c3776c3b493b05ee145f0721e&pid=1-s2.0-S2772741622000230-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73821712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Seismic design of low-rise steel building frames with self-centering hybrid damping connections 自定心混合阻尼连接低层钢结构框架抗震设计

Resilient Cities and Structures Pub Date : 2022-06-01 DOI: 10.1016/j.rcns.2022.06.002

Junlin Li , Wei Wang

{"title":"Seismic design of low-rise steel building frames with self-centering hybrid damping connections","authors":"Junlin Li , Wei Wang","doi":"10.1016/j.rcns.2022.06.002","DOIUrl":"https://doi.org/10.1016/j.rcns.2022.06.002","url":null,"abstract":"<div><p>This paper develops a practice-oriented seismic design procedure for an emerging lateral force resisting system. The system combines the favorable re-centering feature with the attractive hybrid damping capacity. The system overcomes the detrimental frame expansion effect that occurs in conventional self-centering building frames without the cost of building space. Following the proposed design procedure, multiple designs with different parameters to achieve performance objectives were performed for a representative three-story building in which the considered lateral force resisting system is used to resist the seismic forces. Nonlinear response history analyses were performed for the designs to evaluate the applicability and adequacy of the proposed design approach. Based on the analyses conducted in this research, it was found that the considered system designed using the proposed approach can meet both transient and residual inter-story drift requirements specified for the selected performance objectives. While an initial design per the proposed design approach may be inadequate, the re-design strategy recommended can help transform the design to an acceptable one after only one round of modification. Moreover, the composition of hybrid damping may affect the maximum floor acceleration responses. In this study, the maximum floor acceleration can be reduced 12.75% at most by replacing hysteretic damping with viscous damping. This should be included in design consideration in the proposed approach through adjusting the hybrid damping composition.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 2","pages":"Pages 10-22"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000229/pdfft?md5=4e09a44bdeeb1c12a328728143967981&pid=1-s2.0-S2772741622000229-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90001256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Towards an integrated framework for the risk assessment of coastal structures exposed to earthquake and tsunami hazards 建立一个综合框架，对遭受地震和海啸危害的沿海建筑进行风险评估

Resilient Cities and Structures Pub Date : 2022-06-01 DOI: 10.1016/j.rcns.2022.07.001

Cláudia Reis , Mário Lopes , Maria Ana Baptista , Stéphane Clain

{"title":"Towards an integrated framework for the risk assessment of coastal structures exposed to earthquake and tsunami hazards","authors":"Cláudia Reis , Mário Lopes , Maria Ana Baptista , Stéphane Clain","doi":"10.1016/j.rcns.2022.07.001","DOIUrl":"https://doi.org/10.1016/j.rcns.2022.07.001","url":null,"abstract":"<div><p>The spatial distribution of the world population is uneven, with a density of about <span><math><mrow><mn>40</mn><mo>%</mo></mrow></math></span> living in coastal regions. The trend is expected to continue in both demographic indicators and urban development rate, being many coastal cities in seismic- and tsunami-prone regions and built through informal and unplanned settlements, exposing their population and assets to such hazards. Recent tectonic-triggered events raised awareness of the cascading earthquake and tsunami threat and highlighted the paucity of structural design criteria considering the cumulative effects of both. By being exposed to the ground-motion, the structures’ resistance may decrease and become residual/non-existent to support the incoming tsunami, implying an underestimation of the risk.</p><p>Risk management can benefit from reinforcing the ties between natural hazards and engineering practitioners, linking science and industry, and promoting dialogue between risk analysts and policy-makers. Motivated by the expansion plans of an internationally-sized deep-water port located in a tsunami-prone region, a reflection on the work needed to perform a multi-risk assessment and the challenges yet to overcome is introduced to emphasize the challenge of combining safety requirements with financial and ecologic concerns. A conceptual interdisciplinary-based methodology is proposed to support uncertainty-aware, systematic and informed decisions.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 2","pages":"Pages 57-75"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000254/pdfft?md5=ce5172694d0f1a8a1b10234202f435f3&pid=1-s2.0-S2772741622000254-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91631112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Resilience of city underground infrastructure under multi-hazards impact: From structural level to network level 多灾害影响下城市地下基础设施的弹性:从结构层面到网络层面

Resilient Cities and Structures Pub Date : 2022-06-01 DOI: 10.1016/j.rcns.2022.07.003

Hongwei Huang, Dongming Zhang, Zhongkai Huang

{"title":"Resilience of city underground infrastructure under multi-hazards impact: From structural level to network level","authors":"Hongwei Huang, Dongming Zhang, Zhongkai Huang","doi":"10.1016/j.rcns.2022.07.003","DOIUrl":"10.1016/j.rcns.2022.07.003","url":null,"abstract":"<div><p>Underground infrastructure (UI) plays a great important role in the urbanization and modernization of megacities in the world. However, the intensive development of the UI during the past decades has posed great risks to the safety of city infrastructures under the impact of multi-hazards, especially with the condition of global climate change. In this paper, a general conceptualized framework to assess the resilience of UI in cities under multi-hazards impact is proposed. The urban tunnel system, e.g., metro tunnel, road tunnel etc., is selected as the typical underground infrastructure discussed with the emphasis both on the structural level in terms of mechanical behaviors and system level in terms of network efficiency. The hazards discussed in this paper include the natural hazards and human-related ones, with emphasis on earthquake, flood, and aggressive disturbances caused by human activities. After the general framework proposed for resilience of the structural and network behavior of the UI, two application examples are illustrated. The structural resilience of the shield tunnel under earthquake impact is analyzed by using the proposed resilience model, and the network resilience of the road tunnel system under the flood impact due to climate change is analyzed, respectively. The resilience enhancement by using the adaptive design strategy of real-time observational method is mathematically presented in this case. Some other practical engineering recovery measures are briefly discussed at the end of this application example. The findings in the application examples should be helpful to enhance the resilience-based design of the structural and network of tunnels from the component to the system level.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 2","pages":"Pages 76-86"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000266/pdfft?md5=0613495cec4f34ec7622486447f43cc3&pid=1-s2.0-S2772741622000266-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74214926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Resilience of aging structures and infrastructure systems with emphasis on seismic resilience of bridges and road networks: Review 老化结构和基础设施系统的弹性，重点是桥梁和道路网络的地震弹性:回顾

Resilient Cities and Structures Pub Date : 2022-06-01 DOI: 10.1016/j.rcns.2022.05.001

L. Capacci, F. Biondini, D. Frangopol

引用次数: 16

Seismic resilience of building inventory towards resilient cities 面向弹性城市的建筑库存的抗震能力

Resilient Cities and Structures Pub Date : 2022-03-01 DOI: 10.1016/j.rcns.2022.03.002

Juan Gustavo Salado Castillo , Michel Bruneau , Negar Elhami-Khorasani

{"title":"Seismic resilience of building inventory towards resilient cities","authors":"Juan Gustavo Salado Castillo , Michel Bruneau , Negar Elhami-Khorasani","doi":"10.1016/j.rcns.2022.03.002","DOIUrl":"10.1016/j.rcns.2022.03.002","url":null,"abstract":"<div><p>Resilience of a community after an extreme event depends on the resilience of different infrastructure including buildings. There is no well-established approach to characterize and integrate building resilience for community-level applications. This paper investigates how different potential functionality measures can be used to quantify building resilience indexes, and how the results could be aggregated for a set of buildings to provide an indicator for the resilience of an entire community. The quantification of building resilience is based on different functionality measures including repair cost, occupancy level, and asset value. An archetype city block with four different buildings is defined. The individual results for each building are combined using a weight-based approach to quantify the resilience index for the city block. The study then considers small-scale communities with different number of buildings to investigate the influence of contractor availability and collapse probability on the resilience indexes for the set of buildings. Both parameters are shown to be important when quantifying the resilience index. It is also demonstrated that the overall resilience of a community is directly influenced by the resilience of individual buildings. The findings presented here are useful both from the perspective of quantifying the resilience of a community on the basis of its building inventory, as well as for possible inclusion into a holistic framework that aims to quantify community resilience.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 1","pages":"Pages 1-12"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000023/pdfft?md5=ec8a1f186b8f3ba28ab909fd4a1c2b48&pid=1-s2.0-S2772741622000023-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81023786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Towards understanding, estimating and mitigating higher-mode effects for more resilient tall buildings 为了理解，估计和减轻高模式对更有弹性的高层建筑的影响

Resilient Cities and Structures Pub Date : 2022-03-01 DOI: 10.1016/j.rcns.2022.03.005

Constantin Christopoulos, Chiyun Zhong

{"title":"Towards understanding, estimating and mitigating higher-mode effects for more resilient tall buildings","authors":"Constantin Christopoulos, Chiyun Zhong","doi":"10.1016/j.rcns.2022.03.005","DOIUrl":"10.1016/j.rcns.2022.03.005","url":null,"abstract":"<div><p>Rapid urbanization has resulted in increased demand for tall buildings in many large and medium-sized cities around the world. Current code-based standards for seismic design are primarily aimed at minimizing life-safety risks under major earthquakes. While reinforced concrete (RC) high-rise buildings designed following current code requirements are expected to achieve collapse-prevention, the contribution of higher modes of vibrations to the dynamic response of these structures can produce seismic demands significantly larger than those obtained from prescriptive code-based procedures, causing unexpectedly higher structural and non-structural damage to these buildings. These imply considerable costs associated with the loss of residences and business operations as well as the post-earthquake recovery of cities. This paper presents a concise review of the current state-of-the-art and state of research pertaining to the understanding, estimation and mitigation of higher-mode effects on the seismic response of tall and slender RC structures. The paper is organized into four main foci: (1) analytical studies on understanding and quantifying higher-mode effects, (2) available experimental work on this topic, (3) advances in code practices in accounting for higher-mode effects in seismic design of RC tall buildings, and (4) recent developments in innovative systems intended to mitigate higher-mode effects in RC tall buildings. The paper concludes by briefly summarizing future challenges facing the construction of earthquake-resilient RC tall buildings that are essential in building resilient cities of the future.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 1","pages":"Pages 53-64"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000047/pdfft?md5=4e982c3461927edf14b306d7784d890a&pid=1-s2.0-S2772741622000047-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88522470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Table of Content 目录表

Resilient Cities and Structures Pub Date : 2022-03-01 DOI: 10.1016/S2772-7416(22)00019-9

引用次数: 0

Projections of corrosion and deterioration of infrastructure in United States coasts under a changing climate 气候变化对美国海岸基础设施腐蚀和退化的预测

Resilient Cities and Structures Pub Date : 2022-03-01 DOI: 10.1016/j.rcns.2022.04.004

Yating Zhang , Bilal M. Ayyub , Juan F. Fung

{"title":"Projections of corrosion and deterioration of infrastructure in United States coasts under a changing climate","authors":"Yating Zhang , Bilal M. Ayyub , Juan F. Fung","doi":"10.1016/j.rcns.2022.04.004","DOIUrl":"10.1016/j.rcns.2022.04.004","url":null,"abstract":"<div><p>Climate change can accelerate infrastructure deterioration in coastal areas because increased temperature and humidity can promote steel corrosion. This study (1) projects corrosion rate changes for reinforced concrete and steel structures in 223 coastal counties, (2) assesses the impact of corrosion rate changes on the useful life of structures, and (3) evaluates direct economic losses due to shortened useful life of highway bridges over the period 2000-2100. The results show that the useful life of concrete structures may decrease by 1.7-2.7% under the representative concentration pathway (RCP) 8.5 and decrease by 0.7-1.1% under RCP 4.5 by the end of the 21st century. The useful life of steel structures may decrease by 7.9-15.9% under RCP 8.5 and 3.3-6.7% under RCP 4.5. Concrete bridges may suffer an average loss of $6.5-11.7/m<sup>2</sup> under RCP 8.5 and $3.3-16.5/m<sup>2</sup> under RCP 4.5 due to shortened useful life. Steel bridges may suffer an average loss of $73.4-111.3/m<sup>2</sup> under RCP 8.5 and $46.9-81.2/m<sup>2</sup> under RCP 4.5. In both climate scenarios, 10% of counties may have negative losses and 10% of counties may have losses greater than $20 million due to corrosion rate changes for concrete and steel bridges. The results reveal the spatial difference of climate change impacts on infrastructural deterioration and suggest the importance of developing regional specific adaptation strategies.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 1","pages":"Pages 98-109"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000096/pdfft?md5=84c3babbad9502ff993e0a7392e2d40b&pid=1-s2.0-S2772741622000096-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87481897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Quantifying the effect of improved school and residential building codes for tornadoes in community resilience 量化改善学校和住宅建筑规范对社区龙卷风恢复力的影响

Resilient Cities and Structures Pub Date : 2022-03-01 DOI: 10.1016/j.rcns.2022.04.001

Wanting (Lisa) Wang , John W. van de Lindt

{"title":"Quantifying the effect of improved school and residential building codes for tornadoes in community resilience","authors":"Wanting (Lisa) Wang , John W. van de Lindt","doi":"10.1016/j.rcns.2022.04.001","DOIUrl":"10.1016/j.rcns.2022.04.001","url":null,"abstract":"<div><p>Tornadoes can destroy or severely damage physical infrastructure including buildings in a community. This can result in direct losses but also indirect losses such as the closure of key social institutions reverberating further through the community (e.g., schools). Despite significant losses in past events, building codes and standards have not previously included tornado hazards because of the relatively low probability of a direct strike. The recent release of the ASCE 7–22 standard considers tornadoes for Risk Category 3 and 4 buildings, i.e. ranging from schools to critical facilities. This study proposes a series of design combinations of a reinforced masonry school building with different performance targets intended to enable schools to reopen sooner. Tornado fragilities were developed for a school building having improved designs using tornado loads determined based on the new tornado chapter in ASCE 7–22, and then integrated into a community level model with school attendance zones to examine the effect. The ultimate goal in this study is to investigate the effect of improving school building designs would have on maintaining school continuity (and more rapid return) for school children.</p></div>","PeriodicalId":101077,"journal":{"name":"Resilient Cities and Structures","volume":"1 1","pages":"Pages 65-79"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772741622000060/pdfft?md5=36ffe40e0c7860640c2b82132b14bc2f&pid=1-s2.0-S2772741622000060-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75020353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10