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Deformation Mechanism in Central China Revealed by Regional Earthquake Tomography

Seismological Research Letters 2025年第3期96卷 1561-1572页

作者： Hua, Yujin Zhang, Shuangxi Liu, Yu Liu, Li Wu, Tengfei Wei, Yu Li, Bin Department of Earth Sciences and Engineering Taiyuan University of Technology Taiyuan China Department of Geophysics School of Geodesy and Geomatics Wuhan University Wuhan China School of Geophysics and Measurement-Control Technology East China University of Technology Nanchang China College of Civil Engineering Taiyuan University of Technology Taiyuan China School of Civil Engineering and Architecture Hubei Polytechnic University Huangshi China China Huadian Corporation Ltd. Beijing China

The central China region (CCN) has experienced significant deformation and complex structural arrangements. We conducted research on the deformation pattern of the CCN through the 3D velocity structure of the crust and uppermost mantle obtained via body-wave tomography. This velocity structure strongly correlates with the region’s topographic features. The relationship between velocity distributions and topography indicates that compression in the east–west direction, which can lead to crustal and mantle shortening, may play a crucial role in shaping topography. The various structures between the Qinling mountain range in the west and the Tongbai–Dabie mountain range in the east highlight distinct geological processes occurring along the Qinling–Dabie orogenic belt. In addition, we propose that reservoir water has infiltrated the crystalline basement rock layer up to 15–20 km beneath the Three Gorges Reservoir. Furthermore, the Three Gorges Dam serves as a solid foundation to prevent reservoir water from seeping downstream underground. © Seismological Society of America.

关键词： Crystalline rocks

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Review of rules of mixture for effective elastic properties in fibrous and particulate composite materials

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Composite Structures 2025年 367卷

作者： Abdalla, Hassan Mohamed Abdelalim Polytechnic Department of Engineering and Architecture University of Udine Via delle Scienze 206 Udine33100 Italy

Micromechanics based models have been playing an important role in predicting the effective elastic properties of particulate and fibrous linearly elastic composite materials. This paper reviews the simplest most widely-used class of micromechanics models, the so-called rules of mixture, and aims to clarify various misconceptions in their applicability by providing concise derivations from both the mechanics-of-materials and continuum-mechanics approaches. The paper critically reviews the areas in which these analytical models can yield good predictions of effective elastic properties and various historical interventions when properties are underestimated. Besides, it illustrates a generalized framework able to justify their assumptions as lower and upper bounds for elastic properties, though of modest practical application when compared to more refined theories. Eventually, the position of these models with respect to classic assumptions of dilute dispersion is investigated and emphasized with reference to experimental data. © 2025 The Author

关键词： Metamaterials

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Conservative rehabilitation interventions of masonry highway tunnels along the historic Genoa-Po valley motorway in Genoa (Italy)

Conservative rehabilitation interventions of masonry highway...

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ITA-AITES World Tunnel Congress, WTC 2024

作者： Alessio, Carlo Pittalis, Roberto Poli, Andrea Attianese, Giuseppe Chiaia, Bernardino Ferretti, Daniele Zanazzi, Elena Ferrari, Lia Coisson, Eva Tecne group Autostrade per l’Italia S.p.A Genoa Italy Polytechnic University of Turin Torino Italy Department of Engineering and Architecture University of Parma Parma Italy

ISBN: (纸本)9781032800424

The present work deals with the structural safety assessment of existing tunnel masonry linings. Until the introduction of reinforced concrete, masonry linings were the common solution for railway, metro, and road tunnels. As a result, there are still many tunnels with masonry lining that have been in service for more than a century. After such a long time, masonry linings may show signs of degradation due to ageing and the long action of water infiltration may have reduced their strength. For this reason, the safety assessment of existing tunnels is becoming increasingly important, in order to timely identify the criticalities and plan the necessary rehabilitation interventions, but specific regulations are still lacking. This paper addresses this need by proposing a methodology for the global and local static verification of masonry-tunnel-linings, describing the issues to be addressed and proposing a procedure to define the mechanical properties of the masonry, calibrate the partial safety factors, identify the local vulnerabilities and their priority order. In this process, the scientific literature and normative references developed for cultural heritage masonry structures are taken into account, considering that these tunnels have features and problems similar to old masonry constructions (bridges, porches, vaulted buildings) and that the interventions planned should also have a conservative approach, since these structures represent indeed an important element of the history of our architectural and technological evolution. © 2024 The Author(s).

关键词： Safety factor

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Application of different thermal indices in evaluating outdoor thermal comfort in Spring in cold region of China

Application of different thermal indices in evaluating outdo...

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Healthy Buildings 2023: Asia and Pacific Rim

作者： Liu, Sijing Cao, Bin Yume, Oshiro Xie, Yongxin Zhu, Yingxin Department of Building Environment School of Architecture Tsinghua University Beijing China Department of Building Environment and Energy Engineering The Hong Kong Polytechnic University Kowloon Hong Kong

ISBN: (纸本)9781713890850

A field study concerning pedestrian outdoor thermal comfort was conducted in Beijing in Spring. Three types of outdoor conditions, including pedestrian under direct sunlight, in tree shade and at night was chosen. These conditions represent typical outdoor thermal environments in which air temperature differs from mean radiant temperature differently, and the performances of thermal indices including PET, UTCI and SET* were evaluated in these three conditions. SET* was found to perform better in night and shade conditions. In direct sunlight condition, the indices all have deviation in evaluating the thermal impact of solar radiation. A more comprehensive thermal index is needed in evaluating pedestrian outdoor thermal comfort, especially concerning comfort but not neutral. © 2023 Healthy Buildings 2023: Asia and Pacific Rim. All rights reserved.

关键词： Thermal comfort

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A GIS Referenced Methodological Approach for the Brownfield Redevelopment 23rd

A GIS Referenced Methodological Approach for the Brownfield ...

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23rd International Conference on Computational Science and Its Applications, ICCSA 2023

作者： Ippolito, Alfonso Selim, Yasmine Tajani, Francesco Ranieri, Rossana Morano, Pierluigi Department of History Design and Restoration of Architecture Sapienza University of Rome Rome00186 Italy Department of Architecture Faculty of Engineering Ain Shams University Cairo11566 Egypt Department of Architecture and Design Sapienza University of Rome Rome00196 Italy Polytechnic University of Bari Bari70126 Italy

ISBN: (纸本)9783031371196

In the perspective of a sustainable development of the urban territory, the aim of this research is to define a methodology for the characterization of a brownfield inventory, accessible by the government and the private investors to facilitate decision making, by reaching the needed information upon land capability, development incentives, public goals, interests and preferences, environmental concerns. This issue is very current, taking into account the numerous researches on the urban development of the cities and how the urban sprawl caused the industrial areas that initially existed on the city outskirts to become a part of the city center. This rapid growth motivates the governments and private investors to look at these abandoned industrial buildings as important assets. The research discusses a decision support framework and the benefits of access to geospatial databases in the decision-making process. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Decision support systems

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Cross-transmission of exhaled contaminants in a hospital ward with impinging jet supply

Cross-transmission of exhaled contaminants in a hospital war...

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Healthy Buildings 2023: Asia and Pacific Rim

作者： Qin, Chao Li, Zheng-Tong Lyu, Xiao-Pu Lu, Wei-Zhen Department of Architecture and Civil Engineering City University of HongKong Hong Kong Department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic University Hong Kong Department of Geography Hong Kong Baptist University Hong Kong

ISBN: (纸本)9781713890850

Impinging jet ventilation (IJV) systems effectively mitigate exhaled contaminants because they supply fresh air directly to the occupied zone and remove polluted or heated air from ceiling exhausts. However, the transfer of exhaled contaminants in hospital wards is unclear. Previous research on ventilating hospital wards with IJV systems was essentially a personalized ventilation system. This study aims to investigate the transmission of exhaled aerosols in an IJV system ventilated hospital ward. Results indicate that vertically exhaled aerosols are transferred from the patient opposite the diffuser to the patient near the diffuser, despite low air velocity in the room. These results indicate that the airflow created by the jet supply plays an important role in cross-transmission. © 2023 Healthy Buildings 2023: Asia and Pacific Rim. All rights reserved.

关键词： Transmissions

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The effect of noise barriers on viaducts on pollutant dispersion in complex street canyons

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Energy and Built Environment 2023年第5期4卷 589-600页

作者： Tingzhen Ming Fangyan He Yongjia Wu Tianhao Shi Changrong Su Caixia Wang Zhengtong Li Wei Chen Renaud de Richter School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China Department of Aeronautical and Aviation Engineering The Hong Kong Polytechnic UniversityHong KongChina Tour-Solaire.Fr 8 Impasse des PapillonsMontpellier F34090France

The noise reduction effect of noise barriers has been extensively studied,but the effect on pollutant dispersion remains unclear.A computational fluid dynamics(CFD)simulation is conducted to investigate the effects of different heights,lengths,and types of noise barriers and different wind speeds on pollutant dispersion in street canyons with *** field synergy theory of the convective mass transfer process is used for quantitative analysis of pollutant dispersion in street *** results show that as the height and length of the noise barrier increase,the pollutant dispersion capacity *** the wind speed increases,the rate of decrease in the average CO concentration *** effect of the wind speed on the synergistic improvement of the speed and concentration gradient vectors differs for different types of noise *** performance follows the order:fully-closed noise barrier>left noise barrier>right noise barrier>semi-closed noise *** different noise barrier types significantly impact the flow field and pollutant dispersion and reduce the CO concentration to varying degrees,except for the fully-closed *** average CO concentration in the pedestrian breathing zone is reduced by a maximum of 55.85%on the leeward side and by 53%on the windward side,indicating that an appropriate noise barrier on the viaduct reduces noise pollution and improves the air quality in street canyons,especially in the pedestrian breathing zone.

关键词： ANSYS FLUENT Carbon monoxide Computational fluid dynamics(CFD) Near-road environment Traffic related air pollutants(TRAP)

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Exploiting Immersive Virtual Reality for Investigating the Effects of Industrial Noise on Cognitive Performance and Perceived Workload 3rd

Exploiting Immersive Virtual Reality for Investigating the E...

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3rd International Conference on Design Tools and Methods in Industrial engineering, ADM 2023

作者： Evangelista, Alessandro Manghisi, Vito M. De Giglio, Vito Martellotta, Francesco Giliberti, Claudia Mariconte, Raffaele Uva, Antonio Emmanuele Department of Mechanics Mathematics and Management Polytechnic University of Bari Bari Italy Department of Civil Engineering Sciences Architecture Polytechnic University of Bari Bari Italy Dip. Innovazioni Tecnologiche e Sicurezza degli Impianti Prodotti ed Insediamenti Antropici Inail Rome Rome Italy

ISBN: (纸本)9783031520747

The Industry 5.0 paradigm emphasizes the importance of the operator’s well-being by seeing human-centricity as one of its cardinal principles. This enables a twofold benefit, improving the sustainability of the production process and enhancing performance. Improving performance and increasing operators’ safety is often related to cognitive load optimization. Confined spaces are working environments where elements of distraction, such as noise, can cause accidents with major, even fatal, consequences. Studies on the effects of noise on cognitive abilities present mixed results, and those concerning confined spaces are limited as they require an expensive experimental setup replicating the working scenario. Immersive Virtual Reality (IVR) technology enables overcoming this gap by replicating the experimental conditions in a synthetic environment. We exploited IVR to study noise’s impact on cognitive performance in confined spaces. We compared the impact of a stationary continuous noise source with an intermittent non-periodic one by administering the Stroop Color and Word Test. We also assessed the perceived cognitive effort by administering the modified noise-induced task load index questionnaire. We also compared the effects on the operator’s physiological activity through Heart Rate Variability (HRV) analysis. Results show that by keeping the equivalent noise level lower than 85 dB, noise has no statistically significant effects on cognitive performance and Heart Rate. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Sustainable development

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Integrating environmental sustainability in construction Time-Cost trade-off for decision-making using hybrid NSGA-III and MOPSO approach

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Asian Journal of Civil engineering 2025年第4期26卷 1527-1542页

作者： Nagayo, Analene Montesines Singh, Rekha Dhawan, Amit Manjunath, T.C. Qasem, Altayeb Sethi, Krushna Chandra Sharma, Kamal Department of Engineering and Technology University of Technology and Applied Sciences-Al Musanna Al Muladdah Oman Department of Civil Engineering Raj Kumar Goel Institute of Technology Ghaziabad India Department of Civil Engineering Dr. Bhim Rao Ambedkar Polytechnic College Gwalior India Computer Science Engineering Department Rajarajeswari College of Engineering Bangalore India Department of Building Engineering College of Architecture and Planning Imam Abdulrahman Bin Faisal University Dammam Saudi Arabia Department of Civil Engineering Centurion University of Technology and Management Gajapati India Department of Civil Engineering Madhav Institute of Technology and Science Gwalior India

Construction project management often involves optimizing time and cost while ensuring minimal environmental impact. This study presents an innovative hybrid approach combining non-dominated sorting genetic algorithm III (NSGA-III) and multi-objective particle swarm optimization (MOPSO) to address the time-cost-environmental sustainability trade-off (TCEST) in construction projects. The proposed model aims to minimize project completion time and cost while maximizing environmental sustainability. A case study is conducted to validate the model, incorporating diverse construction activities and their respective time, cost, and environmental sustainability metrics. The results reveal Pareto-optimal solutions demonstrating significant trade-offs among the three objectives. The hybrid approach outperforms standalone algorithms in terms of solution diversity, convergence, and hypervolume indicators. Weighted sum methods are employed to select the most suitable solution from the Pareto front based on project priorities. Correlation analysis further explores interdependencies among objectives, emphasizing the feasibility of balancing these critical factors. The study contributes a robust decision-support tool for sustainable project planning, facilitating informed decision-making in modern construction management. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Hybrid Optimization MOPSO NSGA-III Sustainable Construction Time–Cost-Environmental Trade-off

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The Real Estate Risk Assessment: An Innovative Methodology for Supporting Public and Private Subjects Involved into Sustainable Urban Interventions 23rd

The Real Estate Risk Assessment: An Innovative Methodology f...

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23rd International Conference on Computational Science and Its Applications, ICCSA 2023

作者： Morano, Pierluigi Anelli, Debora Tajani, Francesco Roma, Antonella Department of Civil Environmental Land Construction and Chemistry Engineering Polytechnic University of Bari Bari70126 Italy Department of Architecture and Design "Sapienza" University of Rome Rome00196 Italy

ISBN: (纸本)9783031371196

Projects carried out under Public-Private Partnership (PPP) forms are increasingly being used for construction, new infrastructure implementation, urban redevelopment operations and more general land interventions. PPP projects, due to their complexity, are characterized by risks that undermine their success, for this reason risk assessment models for PPP projects are essential to their successful implementation. In this context, the research proposes an innovative real estate risk assessment methodology for supporting the Public Administration and the Private Entrepreneur involved into PPP projects. The research proposes an ex-ante real estate risk assessment methodology, based on the multi-criteria Analytic Hierarchy Process (AHP) technique that can be used at different territorial scales and by both public and private parties involved in urban transformations projects. The construction of the risk index is obtained through the logical-operative framework that consists into a protocol of 7 ordered and sequential phases. The methodology turns out to be flexible and reproducible and allows for parallel analysis of qualitative and quantitative aspects that in terms of risk undermine the success of projects. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Risk assessment

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