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

作者： Guarini, Maria Rosaria Sica, Francesco Morano, Pierluigi Tajani, Francesco Department of Architecture and Design "Sapienza" University of Rome Rome00196 Italy Department of Civil Environmental Land Building Engineering and Chemistry Polytechnic University of Bari Bari70125 Italy

ISBN: (纸本)9783031371134

Urban project evaluation methods frequently rely on the assessment of costs and benefits that are directly tied to monetary measurement. They do not account for the additional advantages to society and economy that ecosystems, depending on their conditions and in response to rising community need, might provide. What might therefore be developed to support the inclusion of the ecosystem services assessment within the framework of economic evaluation procedures in urban system? The work attempts to offer a viable and adaptable framework capable of guiding private and/or public entities’ actions while also taking into consideration the ecosystem’s advantages, more specifically the ecosystem services. The proposed workflow is constituted by series of steps that support the development of decision-making processes that can assess a single intervention from several perspectives, from environmental to economic in nature. It can support the implementation of economic evaluation strategies that take into account the importance of ecosystem services provided by urban habitats. The research highlights how different land use patterns, socioeconomic systems, and environmental conditions can change the project’s potential to deliver ecosystem services. The conclusions outline the practical implications and the limits of the developed assessment framework. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Ecosystems

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Morphodynamic numerical modelling of bridge pier erosion induced by downstream check-dam partial collapse

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Procedia Structural Integrity 2024年 62卷 601-608页

作者： Matteo Nicolini Polytechnic Department of Engineering and Architecture (DPIA) University of Udine via del Cotonificio 114 Udine 33100 Italy

The paper presents a case study in which a severe bridge pier erosion effect was triggered by a partial collapse of a downstream check-dam, due to a flood event in June 2020. The area under study is about 30 km east from the city of Udine (Italy), along the river Torre, which is the main tributary of the river Isonzo. In particular, it is 1 km downstream of the confluence between river Torre and its main tributary, river Natisone. The hydrodynamic complexity of the reach is further exacerbated by the presence of two bridges, close to each other and almost parallel (the new one is just upstream and it is under construction, although almost finished, while the old one is still in service). The result is that there are many bridge piers in the riverbed, determining some interference effects also increasing local erosion. The presence of a check-dam 600 m downstream of the old bridge had a stabilizing effect in this sense, although it was originally designed as a grade control structure of the river. The flood event determined a partial collapse of such structure, whose central portion was progressively excised by tipping. The backward propagation of the erosion reached the area of the bridges, determining a progressive general lowering of the river bed. As a consequence, many bridge piers of the old bridge were excavated, determining severe conditions for the stability of the structure (the traffic was interrupted). The paper presents the methodology adopted and the main results obtained by hydrodynamic and morphodynamic numerical analyses, which were conducted through a two-dimensional, finite volume, shallow water model able to determine the hydrodynamic fields (water depth and flow velocity) and the evolutionary trends of the river bed, allowing to identify the best retrofitting strategy for the design phase.

关键词： river flood two-dimensional models BASEMENT software case study

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Cooling load characteristics of indoor spaces conditioned by decoupled radiant cooling unit with low radiant temperature

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Building Simulation 2022年第12期15卷 2067-2079页

作者： Yuying Liang Nan Zhang Huijun Wu Xinhua Xu Jianming Yang Gongsheng Huang Department of Architecture and Civil Engineering City University of Hong KongHong KongChina School of Civil Engineering Guangzhou UniversityGuangzhou 510006China Department of Building Environment&Energy Engineering Huazhong University of Science and TechnologyWuhanChina School of Automation Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Decoupled radiant cooling units(DRCUs)are capable of increasing the cooling capacity without increasing condensation risks even using a much lower cooling temperature than conventional radiant cooling units(CRCUs).However,it is unclear whether DRCUs using low radiant cooling temperature will increase the cooling load of the conditioned indoor *** this study,the cooling load characteristics of a thermal chamber conditioned by a DRCU was investigated through developing a steady-state analysis model suitable for both DRCUs and *** total/radiative heat flux,as well as the heat exchange with a thermal manikin and walls were analysed under different surface temperatures of *** effect of the emissivity of the thermal chamber’external wall on the cooling load was also *** indicated that the cooling load under the DRCU was slightly smaller than that under the CRCU when the same operative environment was *** the infrared emissivity of the exterior wall’s inner surface could lead to a significant decrease in the cooling load for both the DRCU and *** decreasing the wall emissivity from 0.9 to 0.1,the total cooling load of the DRCU can be decreased by 8.4%and the heat gain of the exterior wall decreased by 21.6%.This study serves as a reference for developing the analysis model and understanding the load characteristics when DRCUs are used to create the thermal environment for indoor spaces.

关键词： radiant cooling condensation-free computational fluid dynamics cooling load hot and humid climates

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Unveiling the Potential Use of Euler Equations in the Utility Additive Analysis for Mass Appraisal 23rd

Unveiling the Potential Use of Euler Equations in the Utilit...

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

作者： Tajani, Francesco Sica, Francesco Guarini, Maria Rosaria Morano, Pierluigi Ranieri, Rossana Department of Architecture and Design "Sapienza" University of Rome Rome00196 Italy Department of Civil Environmental Land Building Engineering and Chemistry Polytechnic University of Bari Bari70125 Italy

ISBN: (纸本)9783031371134

Using mass appraisal techniques has become strategically important in case of plans property assets, investments in technical and economic renewals, alienation of structures no longer suitable for public needs. Multiple operators implement mass appraisal procedures for residential properties. The UTility Additive (UTA) approach for mass residential property evaluation is tested in this research. The UTA considers the process of deciding a property's price as a multi-criteria typology, with the market-determining attributes of the property acting as the selection criteria to which be capable of assigning marginal utility functions. The Euler equations technique makes use of a variety of margin utility functions, including logistic, exponential, and linear ones. The purpose of this research is to provide a novel operational paradigm for figuring out a property's value in relation to UTA and optimization roles. We wished to investigate the applicability of the Euler Equation (linear, exponential, logistic) as marginal utility functions in particular. We look at the results of independently applying several marginal utility functions, illustrating the various performance stances toward the price formation process. The conclusions discuss the potential for using Euler equations as utility marginal functions throughout the UTA, with following extensions of the work in view to evaluate the performance of the operative model UTA on real case studies. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Housing

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Seismic retrofitting of a reinforced concrete building with strongly different stiffness in the main directions 14th

Seismic retrofitting of a reinforced concrete building with ...

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14th fib PhD Symposium in Civil engineering, 2022

作者： Frappa, Giada Pauletta, Margherita Polytechnic Department of Engineering and Architecture University of Udine via delle Scienze 206 Udine33100 Italy

ISBN: (纸本)9782940643172

The displacement capacity of the existing reinforced concrete building under study does not satisfy the seismic Italian Code requirements. The modal analysis highlights that the structure has strongly different stiffnesses along its main directions and, in the stiffer one, translation is coupled with torsion. To improve the seismic behavior of the building, it is proposed to install an external steel frame with stiff braces along the side of the structure which is the most deformable due to torsional effect. Conversely, in the orthogonal direction, where the ductility demand is much higher, external steel frames with dissipative braces are used. The effectiveness of the proposed solution is checked by push-over analysis. © 2022, fib. The International Federation for Structural Concrete. All rights reserved.

关键词： Stiffness

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A data-assisted physics-informed neural network(DA-PINN)for fretting fatigue lifetime prediction

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International Journal of Mechanical System Dynamics 2024年第3期4卷 361-373页

作者： Can Wang Qiqi Xiao Zhikun Zhou Yongyu Yang Gregor Kosec Lihua Wang Magd Abdel Wahab Soete Laboratory Department of Electrical EnergyMetalsMechanical Constructions and SystemsFaculty of Engineering and ArchitectureGhent UniversityGentBelgium Department of Engineering Mechanics School of Aerospace EngineeringHuazhong University of Science and TechnologyWuhanChina Key Laboratory for Mechanics Anhui Polytechnic UniversityWuhuChina Parallel and Distributed Systems Laboratory Jožef Stefan InstituteLjubljanaSlovenia School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghaiChina College of Engineering Yuan Ze UniversityTaiwanChina

In this study,we present for the first time the application of physics-informed neural network(PINN)to fretting fatigue *** PINN has recently been applied to pure fatigue lifetime prediction,it has not yet been explored in the case of fretting *** propose a data-assisted PINN(DA-PINN)for predicting fretting fatigue crack initiation *** traditional PINN that solves partial differential equations for specific problems,DA-PINN combines experimental or numerical data with physics equations as part of the loss function to enhance prediction *** DA-PINN method,employed in this study,consists of two main ***,damage parameters are obtained from the finite element method by using critical plane method,which generates a data set used to train an artificial neural network(ANN)for predicting damage parameters in other ***,the predicted damage parameters are combined with the experimental parameters to form the input data set for the DA-PINN models,which predict fretting fatigue *** results demonstrate that DA-PINN outperforms ANN in terms of prediction accuracy and eliminates the need for high computational costs once the damage parameter data set is ***,the choice of loss-function methods in DA-PINN models plays a crucial role in determining its performance.

关键词： crack initiation data-assisted fretting fatigue finite element method physics-informed neural network

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An evaluation method for searching the functional relationships between property prices and influencing factors in the detected data

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International Journal of Business Intelligence and Data Mining 2022年第1期21卷 23-47页

作者： Morano, Pierluigi Tajani, Francesco Del Giudice, Vincenzo De Paola, Pierfrancesco Di Liddo, Felicia Department of Civil Engineering Sciences and Architecture Polytechnic University of Bari Via Orabona 4 Bari70125 Italy Department of Architecture and Design Sapienza University of Rome Via Flaminia 359 Rome00196 Italy Department of Industrial Engineering University of Naples ‘Federico II’ Piazzale V. Tecchio Naples80125 Italy

The economic crisis of the last decade, started from the real estate sector, has spread the awareness of the importance of the use of advanced evaluation models, as a support in the assessments and in the periodic value updates of public and private property assets. With reference to a sample of recently sold properties located in the city of Rome (Italy), an innovative automated valuation model is explained and applied. The outputs are represented by different mathematical expressions, able to interpret and to simulate the investigated phenomena (i.e. the market prices formation). The application carried out outlines, in the selection phase of the best model, the fundamental condition that the valuer must adequately know the reference market. In this way, it is possible to identify the existing patterns in the detected data in terms of mathematical expressions, according to the empirical knowledge of the economic phenomena. Copyright © 2022 Inderscience Enterprises Ltd.

关键词： Genetic algorithms

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Erosion resistance of treated dust soils based on the combined enzymatically induced carbonate precipitation and polyacrylic acid

Biogeotechnics

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Biogeotechnics 2023年第4期1卷 68-76页

作者： Hengxing Wang Junjie Wang Xiaohao Sun Linchang Miao Wenbo Shi Linyu WU Junhao Yuan Institute of Geotechnical Engineering Southeast UniversityNanjing 210096China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina School of Intelligent Transportation Xuchang UniversityXuchang 461000China School of Civil Engineering and Architecture Wuhan Polytechnic UniversityWuhan 430023China

The majority of cities worldwide are grappling with the challenge of dust ***,the application potential of enzymatically induced carbonate precipitation(EICP),a novel environmentally friendly method,for dust control has been convincingly ***,the long-term durability of EICP treatment is consistently a significant concern,particularly in regions prone to recurrent erosion caused by *** a result,the erosion durability of the EICP-treated dust soils requires further *** address this,Polyacrylic acid(PAA)was added to the cementation solution in this study as the combined PAA and EICP treatment for dust *** results showed that the addition of PAA slightly affected urea degradation;however,the combined PAA and EICP treatment significantly improved surface strength from 300 kPa to 500 kPa,especially for the wind-erosion resistance compared with the EICP treatment *** surface strength of samples treated with the combined PAA and EICP still exhibited a decrease due to repeated rainfall erosion,along with a reduction in calcium carbonate(CaCO_(3))***,the decreasing slopes of surface strength(k=13.434,14.002,or 14.186)in response to repeated rainfall for EICP-PAA-treated slopes were much smaller than those for EICP-treated samples(k=14.271),as well as the decreasing slopes of CaCO_(3)contents,which suggested the slopes with the combined treatment had significantly improved *** comparing the cementation effect and the influence of repeated rainfalls on treated dust samples,the EICP-PAA(50 g/L)treatment achieved better dust control ***,the combined treatment of EICP-PAA shows promising potential for effectively suppressing dust generation and enhancing erosion durability.

关键词： Dust control Enzymatically induced carbonate precipitation Erosion durability Polyacrylic acid Crust layer

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The use of green infrastructure and irrigation in the mitigation of urban heat in a desert city

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Building Simulation 2024年第5期17卷 679-694页

作者： Kai Gao Shamila Haddad Riccardo Paolini Jie Feng Muzahim Altheeb Abdulrahman AI Mogirah Abdullatif Bin Moammar Mattheos Santamouris School of Built Environment Faculty of ArtsDesign and ArchitectureUniversity of New South WalesSydneyNSW 2052Australia Royal Commission of Riyadh City RiyadhSaudi Arabia Institute of Future Cities Chinese University of Hong KongHong KongChina Department of Building Environment and Energy Engineering The Hong Kong Polytechnic UniversityHong KongChina

Severe urban heat,a prevalent climate change consequence,endangers city residents ***-based mitigation strategies are commonly employed to address this ***,the Middle East and North Africa are under investigated in terms of heat mitigation,despite being one of the regions most vulnerable to climate *** study assesses the feasibility and climatic implications of wide-scale implementation of green infrastructure(GI)for heat mitigation in Riyadh,Saudi Arabia—a representative desert city characterized by low vegetation coverage,severe summer heat,and *** research forecasting model(WRF)is used to simulate GI cooling measures in Riyadh’s summer condition,including measures of increasing vegetation coverage up to 60%,considering irrigation and vegetation types(tall/short).In Riyadh,without irrigation,increasing GI fails to cool the city and can even lead to warming(0.1 to 0.3℃).Despite irrigation,Riyadh’s overall GI cooling effect is 50% lower than GI cooling expectations based on literature meta-analyses,in terms of average peak hour temperature *** study highlights that increased irrigation substantially raises the rate of direct soil evaporation,reducing the proportion of irrigation water used for transpiration and thus diminishing ***,water resource management must be tailored to these specific considerations.

关键词： green infrastructure evapotranspiration cooling desert city irrigation urban overheating

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The Verification of the Financial Feasibility of a Former School Reuse Intervention in a Small Town in South Italy

The Verification of the Financial Feasibility of a Former Sc...

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International Symposium on Networks, Markets and People, NMP 2024

作者： Morano, Pierluigi Di Liddo, Felicia Tajani, Francesco Anelli, Debora Department of Civil Environmental Land Building Engineering and Chemistry Polytechnic University of Bari Via Orabona 4 Bari70126 Italy Department of Architecture and Design Sapienza University of Rome Via Flaminia 359 Rome00196 Italy

ISBN: (纸本)9783031746789

Within the current issue related to the redevelopment of educational buildings, in the present research a case study concerning the reuse intervention of a former school is illustrated. By assuming the implementation of a Public Private Partnership procedure, the financial feasibility of the initiative (i.e. from the private investor point of view) is verified through the development of the Discounted Cash Flow Analysis. The paper intends to highlight the relevance of carrying out targeted interventions on this asset typology, in order to define effective strategies of functional reconversion and/or renovation of the existing public properties, due to their attested growing obsolescence state and their needs for greater security and energy efficiency. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Obsolescence

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