Residential Structure Research Articles

Numerical modeling of hydrodynamics on an elevated residential structure from varied wave and surge conditions using OpenFOAM

A Computational Fluid Dynamic (CFD) model study of wave and structure interactions on an elevated residential building under various air gap and surge/wave conditions was performed using the olaFlow, an open-source program using the OpenFOAM (Open-source Fields Operation And Manipulation) platform. The numerical model results, including free surface elevation, wave velocity, and vertical pressures on the underside of the elevated structure, showed a good agreement with the measured time-series data from the 1:6 scale hydraulic experiment (Duncan et al., 2021). The numerical simulations were used to extend the physical model tests by computing the vertical distribution of the pressure and resulting wave-induced horizontal forces/pressures, which were not measured in the physical model studies. The simulated results indicate that the pattern of pressure distributions at the frontal face of the elevated structure was controlled by water depth and wave-breaking types (nonbreaking, breaking, and broken waves). The wave induced-vertical force on the elevated structure strongly depends on wave height and the air gap, which is a net elevation from the still water level to the bottom of the structure, but the horizontal force shows complicated patterns due to the varied surge levels (flow depth), wave heights and air gaps. The new dimensionless parameter, α′/h, comprised of the air gap, incident wave height, and flow depth, is introduced and utilized to predict the horizontal forces on the elevated structure.

Worker intra‐urban residential migration and spatial labour market change in Melbourne's functional economic regions

AbstractThis paper investigates the intra‐urban residential migration of workers in Melbourne and assesses the spatial effects of this dynamic on urban internal structure and spatial labour markets. Intra‐urban migration is an important category of internal migration that relocates human and social capital in urban areas, contributing to changes in urban residential and labour market structure. This paper fills the gap in internal migration literature by determining spatial residential movement dynamics through a spatial analysis of census‐based intra‐urban migration flow data. In addition to detailed migration flow analysis undertaken at a local scale, the paper contributes an improved economic data geography based on functional economic regions (FERs) that permits analysis of the intersection of worker migration flows with sub‐metropolitan labour markets. Our results show that intra‐urban migration results in a strong outward flow of workers in Melbourne, which primarily appears to be shaped by spatial housing markets. This process, in turn, contributes to the dispersion of labour markets in Melbourne, complicating policy aims concerning urban agglomeration and limiting urban spatial expansion.

Women Mayors in Slovakia

In Slovakia, the evidence reports women underrepresentation in local politics. In this paper, the spatial insight to the numeric women representation in local governments at the position of the mayor (elected local authority) in Slovakia in recent 20 years is given. The aim of the paper is to identify the areas, where the representation of women mayors is the most evident and how it evolves in time. For better visibility of results on the map, local data for 2,924 local governments (municipalities) are aggregated to the district level (79 districts at LAU1) and the shares of women mayors on all mayors in a district are displayed for five election periods since 2002. Results confirm the increasing trend of women representation in local governments. Beside it, they unveil that the increase of the portion of women mayors is observed firstly in the south – center part and edge north-eastern part of Slovakia. These areas are characterized by high fragmentation of residential structure, low GDP per capita and higher ethnolinguistic fragmentation. Then the increase of women representation in local governments subsequently continued in south-eastern and south-western part of Slovakia.

Response Spectrum Analysis of a RC Building Based on Complete Quadratic Combination (CQC) Method

In the realm of structural design, Seismic Analysis is crucial. Many structures have collapsed because of earthquakes; as a result of numerous studies, different methods for analysing and determining vibration modes of a structure have been created. Seismic analysis can be done in two ways: static analysis and dynamic analysis. The basic mode of vibration dominates the response in the static technique of seismic analysis, and the mass and stiffness of the structures are evenly distributed, resulting in a regular shape, however this assumption fails for irregular buildings. As a result, dynamic methods are used to solve this issue. Response spectrum is one such dynamic method that is relatively simple to utilize compared to others. The benefit of employing the seismic response spectrum method is that it aids in the prediction of displacement and member forces in structural systems. As a result, this method aids in determining peak structural responses within a linear range, which can then be used to calculate lateral forces created in structures due to earthquakes, allowing for more earthquake-resistant building design. Although this method is approximate, it is a cost-effective and beneficial method for preliminary design research. The response spectrum method is used on STAAD.PRO V8i software to design a G+4 residential structure in our study. The building’s measurements are 16 meters long, 12 meters wide and 15 meters tall. The foundation was built to a depth of 1.5 meters. The structure was built to withstand earthquakes in seismic zone III on medium-density soil. Dead load (IS 875 Part I), Live load (IS 875 Part II), Seismic Load (IS 1893 Part I), and Wind Load are some of the load instances that were presented based on Indian Standard code (IS 875 Part III). To acquire the best response, the response spectrum modal combination Complete Quadratic Combination (CQC) is used. Various parameters like wind intensity, seismic parameters, dynamic weight, modal participation factors, base shear and peak storey shear are calculated. Base shear and peak storey shear are found to maximum in Mode 2 and between 5th and 6th respectively.

Provincializing Roman Dacia: The Canadian–Romanian Apulum Roman Villa Project, 2018–2019

The Apulum Roman Villa Project (ARVP) examines the “provincialization” and “de-provincialization” of Roman Dacia through the archaeological micro-history of a villa site at Oarda-Bulza, just outside one of the provincial capitals at Apulum. As one of the first villas in Dacia to be excavated scientifically and from multidisciplinary perspectives, the site promises to shed new light on the interplays among forms of production, cultural consumption, community formation, and incorporation into a host of new imperial networks (economic, military, and social). Aerial, geophysical, and pedestrian surveys undertaken in 2018 allowed identification of four major buildings within an enclosure: an elite residential structure; a productive zone that also seems to have housed its own community; and two storage buildings. Additionally, traces of Early and Late Iron Age occupation have been identified on site. The surveys also point to the ongoing potential of the site for future excavations.

Gentrifying rural community development: A case study of Bama Panyang River Basin in Guangxi, China

Rural gentrification is deeply characterized by institutional context and spatiotemporal heterogeneity. Based on a diachronic field investigation, this paper constructs an analytical framework for gentrifying rural community development (GRCD) with a “community” theoretical perspective and analytical approach, defines the concept of GRCD, and analyzes the main characteristics, formation mechanism and regulation path of a typical gentrifying rural community in the Panyang River Basin of Bama County, Guangxi. Driven by factors such as the complex flow and heterogeneous living space practices of the host-guest community, the longevity “myth” led by commercial capital and consumption demand, and multiple action logics and desertification community governance, great changes have occurred in the social space and material landscape of the rural longevity community. Such changes include comprehensive reconstruction of the resident population, surface interaction and social separation of the host-guest community, residential structure change and settlement landscape renewal, and delocalization of the healing landscape and lifestyle changes. We propose policy insights in three areas: public and localization institutional arrangements, shared and comfortable gentrifying rural community making, and inclusive and synergistic gentrifying rural community governance. Through these aspects, we provide insights from the Chinese case for the gentrification and community development of rural areas in the Global South.

Seismic Response and Economic Study of New Light Steel-Wood-Plastic Structure in Rural Yunnan, China

A new type of light steel-wood-plastic residential structure in rural has popular in recent years in rural Yunnan, China. The application of light steel, wood, and new plastic materials in practical engineering is gradually increasing due to its advantages of green ecology and waste utilization, and its response characteristics under earthquakes have attracted great attention. In this paper, seismic-resistant models, seismic-isolated models, and seismic-damped models for multistorey light steel-wood-plastic structures were established using the SAP2000 finite element software based on different seismic response methods. The seismic-isolated model is divided into five schemes, namely, LRB400, LRB500, LRB600, high damped, and friction pendulum-isolated bearings, and the seismic-damped model is divided into three schemes, namely, ordinary bracing, soft-steel bracing, and BRB bracing at the same locations around the 2nd floor of the building. Nonlinear time analysis was carried out for the nine schemes, comparing the period, structural interstorey displacement, base shear, top displacement, top acceleration, and economy of the structure under the action of an 8-degree earthquake. Results show that the period of the seismic-isolated system increased by approximately 130% compared to the seismic-resistant system, and the period of the damped system decreased slightly compared to the seismic system, the interstorey displacement, base shear, and top acceleration of both the seismic-isolated system and the damped system were smaller than those of the seismic-resistant system, and the seismic-isolated system decreased by approximately 40% compared to the damped system, and the seismic-isolated system was more effective than the damped system. From the comparison of postearthquake damage cost and full-cycle cost, the economic performance of the seismic-isolated structure is better than that of the damped and seismic-resistant structures. The conclusions of this paper can provide a scientific reference for promoting the use of new light steel-wood-plastic residential buildings.

Analysis and Design of G+12 Storey Reinforced Concrete Building Using ETABS

Abstract: Extended Three Dimensional Analysis of Building Systems is abbreviated as ETABS. The significant objective of this program is to make multi-story structures in a purposeful way. The productive plan and development of quake safe designs is significant everywhere. ETABS was used to analyse and design a multi-story residential structure with the lateral loading effect of an earthquake. IS 1893-part2:2002 and IS 456:2000 were used to design this project. This analysis takes into account harsh earthquake zones, and reactions are evaluated using soil type-II conditions. Important phrases: Etabs programme , Seismic Analysis of G+12 storey RC frame structure.

</br> A PESSOA IDOSA INSTITUCIONALIZADA: AUTOPERCEÇÃO DE SAÚDE </br>

Introduction : At a global level, demographic changes are notorious, as a result of the increase in aging and longevity indices. Aging is assumed to be transversal to all regions of the world. In Portugal, the projections indicate a doubling of the aging index until the year 2080. In the face of the changes (sociocultural, political and economic), which are quite significant in the current family dynamics, institutionalization is affirmed as the solution that best responds to the needs of the family of elderly person, who sees their independence and/or autonomy limited, not allowing them to stay at home. In this sense, evaluating the elderly person's perception of health, namely physical, mental and social well-being, may enable an effective knowledge of their needs and limitations. Objective: To identify the health perception of residents of a residential structure for the elderly in the municipality of Évora. Methods: Descriptive study with a quantitative approach. The EASYcare survey was used as a data collection tool. This allows the identification of perceived limitations and needs. Intentional sample of 58 people aged ≥ 65 years, living in a nursing home in the municipality of Évora. Results: Mean age 87.8 years, mostly women. The self-perception of health was validated as “reasonable” by 36.2%, 20.7% as “poor” or “very good” and 3.4% as “excellent”. Conclusion: The perception of health of the population studied is evidenced in a diminutive way in the face of physical, cognitive and social changes. Keywords: Aged; Aging; Health; Institutionalization; Self Concept.

Residential Fuel Transition and Fuel Interchangeability in Current Self-Aspirating Combustion Applications: Historical Development and Future Expectations

To reduce greenhouse gases and air pollutants, new technologies are emerging to reduce fossil fuel usage and to adopt more renewable energy sources. As the major aspects of fuel consumption, power generation, transportation, and industrial applications have been given significant attention. The past few decades witnessed astonishing technological advancement in these energy sectors. In contrast, the residential sector has had relatively little attention despite its significant utilization of fuels for a much longer period. However, almost every energy transition in human history was initiated by the residential sector. For example, the transition from fuelwood to cheap coal in the 1700s first took place in residential houses due to urbanization and industrialization. The present review demonstrates the energy transitions in the residential sector during the past two centuries while portending an upcoming energy transition and future energy structure for the residential sector. The feasibility of the 100% electrification of residential buildings is discussed based on current residential appliance adoption, and the analysis indicates a hybrid residential energy structure is preferred over depending on a single energy source. Technical considerations and suggestions are given to help incorporate more renewable energy into the residential fuel supply system. Finally, it is observed that, compared to the numerous regulations on large energy-consumption aspects, standards for residential appliances are scarce. Therefore, it is concluded that establishing appropriate testing methods is a critical enabling step to facilitate the adoption of renewable fuels in future appliances.

Machine Learning Applications to Land and Structure Valuation

In some applications of supervised machine learning, it is desirable to trade model complexity with greater interpretability for some covariates while letting other covariates remain a “black box”. An important example is hedonic property valuation modeling, where machine learning techniques typically improve predictive accuracy, but are too opaque for some practical applications that require greater interpretability. This problem can be resolved by certain structured additive regression (STAR) models, which are a rich class of regression models that include the generalized linear model (GLM) and the generalized additive model (GAM). Typically, STAR models are fitted by penalized least-squares approaches. We explain how one can benefit from the excellent predictive capabilities of two advanced machine learning techniques: deep learning and gradient boosting. Furthermore, we show how STAR models can be used for supervised dimension reduction and explain under what circumstances their covariate effects can be described in a transparent way. We apply the methodology to residential land and structure valuation, with very encouraging results regarding both interpretability and predictive performance.

Analysis and Design of G+10 Residential Building Using STAAD.PRO V8i

The main aim of structural engineer is to design the structure for a serviceable, safe, durable and economical. The entire process of structural planning and design is required imagination and sound knowledge. Analysis and design of G+10 storey residential building structure as per IS Code methods. Analysis and design of entire structure have been completed by manual design and verifies using STAAD.PRO V8i Software. Now a day large number of application software’s are available in the civil engineering field. All these software’s are developed as the basis of advanced. Finite element analysis which includes the effect of dynamic load such as wind effect, effect bets etc. in the present work, an attempt has been made to study the efficiency of certain civil engineering applications software’s such as STAAD.PRO V8i and ETABS. All the drafting and detailing was done by using AutoCAD 2021. In this project, the design of beam, column, slab, staircase, shear wall is calculated by “Limit State Method” using IS: 456-2000 IS code book. Different loads active on the member are consider according to IS:875-1987(part1,part2,part-3). Hence residential building is properly planned in accordance with Indian Standard Codes of India. KEY WORDS :- Analysis of structure(G+10) ,Design of structure (G+10), Auto cad 2021 ,STAAD.PRO V8i.

Investigating the residential electricity consumption-income nexus in Morocco: a stochastic impacts by regression on population, affluence, and technology analysis

In a comprehensive LMDI-STIRPAT-ARDL framework, this research investigates the residential electricity consumption (REC)-income nexus in Morocco for the period 1990 to 2018. The logarithmic mean Divisia index (LMDI) results show that economic activity and electricity intensity are the leading drivers of Morocco’s REC, followed by population and residential structure. And then, the LMDI analysis was combined with stochastic impacts by regression on population, affluence, and technology (STIRPAT) analysis and the bounds testing approach to search for a long-run equilibrium relationship. The empirical results show that REC, economic growth, urbanization, and electricity intensity are cointegrated. The results further show that there exists a U-shaped relationship between per capita gross domestic product (GDP) and REC: an increase in per capita GDP reduces REC initially; but, after reaching a turning point (the GDPPC level of 17,145.22 Dh), further increases in per capita GDP increase REC. Regarding urbanization, the results reveal that it has no significant impact on Morocco’s REC. The stability parameters of the short and long-term coefficients of residential electricity demand function are tested. The results of these tests showed a stable pattern. Finally, based on the findings mentioned above, policy implications for guiding the country's development and electricity planning under energy and environmental constraints are given.

Research on ordered charge and discharge of Electric Vehicles and their effects

Abstract Based on the control strategy of ordered charge and discharge of electric vehicles, the control strategy of ordered charge and discharge is proposed. The control strategy of the minimum variance minimum differential peak and valley load as the goal, and will be the charge and discharge time of electric vehicles and the charge and discharge requirements as constraint conditions, the optimal solution given by the method of charging control flow diagram and orderly, according to the actual place residential distribution network structure, based on MATLAB/simulink to establish the simulation model of the distribution network. The simulation results show that the proposed orderly charge-discharge strategy can effectively complete the “peak-valley filling”, reduce the daily maximum load increment and reduce the peak-valley difference.

Two-Story Residential Structure Damages after the 2020 Puerto Rico Earthquake

Two-Story Residential Structure Damages after the 2020 Puerto Rico Earthquake

A Review for an Effective Approach towards Hydroelectric Power Generation Using In-Pipe Mesoscale Submersible Turbine

Abstract: Turbines are playing a massive role in our day-to-day lives in the back-end portion of lifestyles where they have been efficiently providing us energy through tidal, hydrological, and many such other mediums. A dominant explanation for the need for energy production has been introduced in the 1800s since the requirement for a high consumption of energy in various forms has started taking place. A very common method that has been observed in today’s innovative mannerism is the use of turbines in dams, undersea, elsewhere at locations where the flow of fluid induces better outputs. Vertical axis turbines, Francis turbines as well as Kaplan turbines have frequently opted for such purposes but after studying over 65 works done by adepts, professionals, and experts; the purposely implemented input that is required to fulfill the output doesn’t have to always be a necessity, it seemed to be the new designing restructured platform for users as well as providers. An overture to install micro versioned turbines of macro hydroelectric power plants within a residential or commercial structure at the main water-supply connections either at their junctions or directly near the overhead water tanks cannot just provide subtle but fortifying and tireless inputs since the flow of water will be anticipated naturally by the implicated outcomes through day-to-day chores performed. Hydrokinetic conversion systems may appear suitable in harvesting energy from such renewable resources, despite the fact that they are still in the early stages of development. Contrary to what has been assumed, there are numerous possibilities for the utilization of this energy for common areas/public zones such as signals, street lights, or any such productive amenities to bestow leading-edge facilities without any hitch regarding external contriving inputs. Keywords: Turbine, CFD Simulations, Archimedes screw, Water distribution logistics, Mini-Hydro-Power Plant, In-Pipe electricity generation, Inline hydroelectric generation.

Research on Seismic Optimization Design of High-rise Residential Building Structure

Research on Seismic Optimization Design of High-rise Residential Building Structure

Evaluation and Analysis of Quantitative Architectural Space Index Based on Analytic Hierarchy Process.

With the continuous development of the social economy, the urban residential structure is also changing, and people have higher and higher requirements for the living environment. Moreover, the landscape construction of public spaces in cities is an important part of the city. It is easy to neglect the comprehensive consideration of historical development and regional culture in architectural projects. The overall lack of individuality in urban design, the lack of characteristics of adapting measures to local conditions, and the blind emphasis on architectural landscaping have led to a serious lack of regional cultural characteristics and spiritual culture in public places. Therefore, in terms of the problems of insufficient landscape construction quality and green concepts being insufficient in the construction environment of cities, an evaluation method system is established in the paper to further study the shortcomings of the scenic area architecture. What is more, relying on the personal experience of the users in the scenic spot and understanding the real needs of the public space landscape environment around the scenic spot, scientific methods and a complete system are applied to make an overall assessment of the public space in the built residential area. Besides, according to the data analysis of the simulation experiment, the advantages and disadvantages of the public space in the residential area are extracted. Combined with the current research status, the green concept design strategy of the public space landscape environment in the scenic spot is summarized. Lastly, according to the data analysis of the simulation experiment, the evaluation satisfaction of the activity atmosphere, plant configuration, and overall layout is improved by 4.2%, 3.7%, and 3.1% compared with other methods, which proves that this study has a more reasonable planning program to meet the various needs of public open space. The development of urban landscape design provides a valuable reference.

Effects of HVAC on combustion-gas transport in residential structures

Time-resolved concentrations of oxygen (O2), carbon dioxide (CO2) and water vapor (H2O) produced by controlled propane gas burners are measured at three locations in a residential structure equipped with a heating, ventilation and air-conditioning (HVAC) system. Experiments are conducted to assess the effects of HVAC operating status (off vs. on) and the impact of bedroom door position (open vs. closed) on species concentrations. Change in concentration up to the flame extinction point, the rate of change, and the transport time for the measured species at each location is compared. The CO2–O2 concentration ratio derived from these experiments correlates strongly with the stoichiometric combustion ratio. The CO2–H2O and O2–H2O ratios have a relatively strong correlation though with slightly higher variability. Both the HVAC status and bedroom door position have statistically significant influence on the total change in concentration for all the measured species. However, HVAC status only has a statistically significant effect on the rate of change of H2O but not CO2 and O2 concentrations. For all three species in both bedrooms, the concentrations typically begin to change later in experiments with HVAC off than experiments with HVAC on.

ENERGY ANALYSIS IN RESIDENTIAL BUILDING FOR INSULATION ROOF MATERIAL USING BUILDING INFORMATION MODELLING.

Energy efficient is becoming a significant subject to investigate within the Architecture Engineering and Construction (AEC), as a result of the expanding heating and energy usage problem. Lack of interoperability has been identified as a hurdle to increased efficiency in the AEC. In order to fulfil the expanding demands around the world, the energy analysis must be incorporated into the building's planning section. Predicting a building's energy use and establishing an energy-saving life and style are both required. To conduct an energy study of a G+3 residential structure, the article uses Autodesk (BIM) capabilities. The goals of this project are to find BIM energy analysis into calculating a building's energy consumption, as well as to conclude the life cycle cost and energy cost over time, in same building. This study's primary focus is on roof materials and alternatives accomplished with the use of Autodesk Revit software and Green Building Studio, a cloud-based energy analysis application.