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Geometric investigation of entrance proportions of houses from the Qajar to the beginning of the early Pahlavi in Dezful City(1789—1979)

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Frontiers of Architectural Research 2024年第1期13卷 57-78页

作者： Raziyeh Rezadoost Dezfuli Mohammad Mehrakizadeh Behnaz Safar Ali Najar Hassan Bazazzadeh Mohammadjavad Mahdavinejad Department of Architecture Poznan University of Technology61-131 PoznanPoland Department of Architecture and Urban Planning Jundi Shapur University of TechnologyDezfulIran College of Engineering and Architecture University of Nizwa616 Birkat Al MawzOman Department of Architecture Faculty of Art and ArchitectureTarbiat Modares UniversityTehranIran

Due to the importance of the historical context of Dezful City,investigating historic buildings is *** unfortunately,a large part of it is being *** this reason,it is essential to discover the guidelines and logic behind the architectural design of these buildings to help their reconstruction or ***,there is no logical information about the components of this context and the reconstructions are usually done according to taste and based on architecture tested or personal ***,it is necessary to find a logic behind these critical components that support the whole plan or parts of it in a particular *** purpose of this research is to discover and find the logic behind the design of this building in the historical context of *** geometrical proportions can significantly help to reconstruct buildings better and more *** this purpose,30 historical houses of Dezful were randomly selected,and their input information was drawn in 2D form in ***,the length,width,and height proportions were measured,and the obtained ratios were compared with the golden proportions and dynamic *** paper studies entrance based on ratios of√2,√3,√4,√4,√1.25 andφ(the golden section).The results show that golden proportions and proportions derived from dynamic rectangles are present in the wording of all ***,the range of ratios in the plan is from 1.34 to 2,and the content of changes in the section is from 1.22 to *** results can help architects,and particularly building owners,to reconstruct based on existing logic by discovering the proportions of the entrances of the *** is possible to administer a part of the damaged tissue and estimate its dimensions and sizes because the proportions’completeness can help revive half-destroyed historical buildings.

关键词： Proportions Historical houses House entrance Dezful city Qajar period to early Pahlavi

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The construction status and optimisation strategies of an environmentally friendly society under the concept of sustainable development

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International Journal of Sustainable Development 2025年第2-3期28卷 287-306页

作者： Liu, Changfei An, Jing Architecture and Civil Engineering Institute Guangdong University of Petrochemical Technology Guangdong Province Maoming525000 China College of Music Guangdong University of Petrochemical Technology Guangdong Province Maoming525000 China

Due to the long-term imbalance of China’s industrial structure, non-renewable resources have entered a period of depletion. As a result, China has formulated a strategy for building an environmentally friendly society. Therefore, the construction status and optimisation strategies of an environmentally friendly society under the concept of sustainable development have been proposed. Build a comprehensive evaluation index system for the construction of an environmentally friendly society, and complete the current status analysis of the construction of an environmentally friendly society based on the comprehensive evaluation results. Develop optimisation strategies for the construction of an environmentally friendly society and promote the rapid construction of an environmentally friendly society. The case analysis results indicate that the optimisation strategies formulated can effectively reduce the energy use and pollution waste emissions of cities, and promote the construction of an environmentally friendly society in China while ensuring positive economic development. Copyright © 2025 Inderscience Enterprises Ltd.

关键词： Green development

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Development and application of novel high‐efficiency composite ultrafine cement grouts for roadway in fractured surrounding rocks

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Deep Underground Science and engineering 2024年第1期3卷 53-69页

作者： Maolin Tian Shaojie Chen Lijun Han Hongtian Xiao Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation Shandong University of Science and TechnologyQingdaoChina College of Civil Engineering and Architecture Shandong University of Science and TechnologyQingdaoChina College of Energy and Mining Engineering Shandong University of Science and TechnologyQingdaoChina State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhouChina

The fractured surrounding rocks of roadways pose major challenges to safe *** has often been used to reinforce the surrounding rocks to mitigate the safety risks associated with fractured *** aim of this study is to develop highly efficient composite ultrafine cement(CUC)grouts to reinforce the roadway in fractured surrounding *** materials used are ultrafine cement(UC),ultrafine fly ash(UF),ultrafine slag(US),and additives(superplasticizer[SUP],aluminate ultrafine expansion agent[AUA],gypsum,and retarder).The fluidity,bleeding,shrinkage,setting time,chemical composition,microstructure,degree of hydration,and mechanical property of grouting materials were evaluated in this ***,a suitable and effective CUC grout mixture was used to reinforce the roadway in the fractured surrounding *** results have shown that the addition of UF and US reduces the plastic viscosity of CUC,and the best fluidity can be obtained by adding 40%UF and 10%*** UC and UF particles are small,the pozzolanic effect of UF promotes the hydration reaction,which is conductive to the stability of CUC *** addition,fine particles of UC,UF,and US can effectively fill the pores,while the volumetric expansion of AUA and gypsum decreases the pores and thus affects the microstructure of the solidified *** compressive test results have shown that the addition of specific amounts of UF and US can ameliorate the mechanical properties of CUC ***,the CUC22‐8 grout was used to reinforce the No.20322 belt *** results of numerical simulation and field monitoring have indicated that grouting can efficaciously reinforce the surrounding rock of the *** this research,high‐performance CUC grouts were developed for surrounding rock reinforcement of underground engineering by utilizing UC and some additives.

关键词： broken surrounding rock composite ultrafine cement(CUC)grouts grouting material grouting performance grouting reinforcement

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Fractal Geometry-based Porosity Analysis of Cementitious Composite Material Using Wollastonite Under Freeze-thaw Condition

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Journal of Wuhan University of technology(Materials Science) 2025年第3期40卷 769-779页

作者： Aziza Kuldasheva HUANG Bin Kholjigit Kuldashev LI Beixing Bakhtiyor Saidmuratov College of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Ad-vanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Tech-nology of Building Material and Products Samarkand State Architectural and Civil Engineering UniversitySamarkand-140100Uzbeki-stan State Key Laboratory of Silicate Materials for Architecture Wuhan University of TechnologyWuhan 430070China Samarkand International University of Technology School of EngineeringSamarkand-140100Uzbekistan

Low porosity is very significant for cementitious composite materials(CCM)under freeze-thaw *** reduce the porosity of CCM,we used wollastonite mineral fibers as a partial replacement for cement and *** five combinations,in which 10%,32%,and 48%Wollastonite were added,were made for scanning using both scanning electron microscopy(SEM)and computed tomography scan technology(CT).Then,the 2D SEM pictures and the 3D pore distribution curves are obtained before and after the freezing and thawing processes,where the micro-pores in the CCM materials are *** fractal dimension is used to quantify the topography image in two dimensions,as well as the pore distribution in three *** method allows for the determination of both surface porosity and volume porosity,both of which show an increase in response to an escalation of freeze-thaw *** is also found that the micro-damage in the concrete is of self-similarity,and in the context of the fractal dimension,the pore evolution can be quantitatively characterized across different sizes,ranging from local to global levels,before and after freezing and thawing.

关键词： wollastonite recycled-enriched aggregates fractal dimension freeze-thaw cycle CCM SEM CT

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Numerical simulation of an OWC-type wave energy converter with projecting walls in regular waves 6th

Numerical simulation of an OWC-type wave energy converter wi...

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6th International Conference on Renewable Energies Offshore, RENEW 2024

作者： Tan, L. Chang, R.Y. Ikoma, T. Department of Oceanic Architecture and Engineering College of Science and Technology Nihon University Chiba Funabashi Japan

ISBN: (纸本)9781032905570

This paper presents a numerical investigation on the hydrodynamic characteristics of a projecting wall type oscillating water column (OWC) wave energy converter by a frequency-domain linear potential flow model and a CFD model based on Flow3D software. It is found that both the linear potential flow and CFD solutions are in reasonable agreements with the first order experimental results of OWC and air pressure responses. The linear potential solution is found to under-predict the primary-stage energy conversion performance at long wavelengths and the reason may be attributable to nonlinear effects. The airflow velocity response result near the OWC chamber orifice indicates that the nonlinear frequency components are non-negligible. The variation of the velocity magnitude counter near the OWC model is examined based on CFD simulations. The phase differences among the velocities, pressures and OWC response are analyzed, which are expected to be helpful in understanding the physical mechanisms of OWC devices. © 2025 The Author(s).

关键词： Potential flow

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The Feasibility Study of the Rapid Damage Inspection Technique in Municipal Pole Structure Using UAV 2nd

The Feasibility Study of the Rapid Damage Inspection Techniq...

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2nd International Conference on Green Building, Civil engineering and Smart City, GBCESC 2023

作者： Zhang, Lu Liu, Yating Li, Hongyu College of Civil Engineering and Architecture Guilin University of Technology Guangxi Guilin541004 China

ISBN: (纸本)9789819999460

With the development of city size and modern infrastructure, various types of pole facilities were increasingly utilized in the modern cities, such as light pole, power supply tower, wind turbine and traffic sign pole. Meanwhile, such facilities may have some damage issues due to aging and other environmental factors. For ensuring the safety and municipal maintenance, it is essential to proposed some reliable and efficient inspection methods. Especially for the crowded urban area, the traditional inspection method such as manual observation and non-destructive test using the permanent sensors are not applicable. To this end, UAV inspection can be a promising technique to realize rapid evaluation of damage in the pole structure. Therefore, this paper proposed a UAV inspection method associated with computer-based visual displacement and vibration monitoring techniques to rapidly detect damage in the pole structure. Its feasibility has been discussed by methodology discussion and numerical model. Two types of common damage types of lamp poles were selected: the corrosion of lamp poles and the loosening of bolts connection were correlated to the vibration modal. The results provided a theoretical basis for UAV inspection on any municipal structure in the future. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Poles

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WAVE PROPAGATION IN PIEZOELECTRIC SEMICONDUCTOR MICROBEAMS BASED ON MODIFIED STRAIN GRADIENT THEORY 18

WAVE PROPAGATION IN PIEZOELECTRIC SEMICONDUCTOR MICROBEAMS B...

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18th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications, SPAWDA 2024

作者： Li, Yansong Liu, Baoliang College of Architecture and Civil Engineering Guangdong University of Petrochemical Technology Maoming525000 China

ISBN: (纸本)9798331523732

In this study, the wave propagation in the piezoelectric semiconductor microbeam is investigated. The first-order shear deformation theory is used. The modified strain gradient theory with three material length scale parameters is adopted to capture the size effect of the piezoelectric semiconductor microbeam. The equations of motion of the piezoelectric semiconductor microbeams are derived by using Hamilton’s principle. The numerical examples are carried out and the effects of carrier density, material length scale parameters and external electric voltage on the wave frequency and phase velocity are discussed in detail. This study will be helpful for the design and manufacture of the piezoelectric semiconductor microstructures. © 2024 IEEE.

关键词： Shear deformation

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A Novel Self-Recovery Tri-stable Damper: Design and Analysis of the Energy Dissipation Performance 2nd

A Novel Self-Recovery Tri-stable Damper: Design and Analysis...

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2nd International Conference on Green Building, Civil engineering and Smart City, GBCESC 2023

作者： Li, Hongyu Zeng, Xiangxing Xie, Liling Zhang, Lu College of Civil Engineering and Architecture Guilin University of Technology Guangxi Guilin541004 China

ISBN: (纸本)9789819999460

Mechanical metamaterials with the natural material engineered can give them properties and functions, which are not available in any existing materials. Recently, the mechanical metamaterials have already become a cutting-edge research topic and are widely used in many fields such as electronics, biology, medicine etc. In this paper, we introduced the concept of the mechanical metamaterials to the damper design for seismic resistance in civil engineering. A novel self-recovery tri-stable metal damper (SRTMD) was proposed, which takes fully advantage of the elastic deformation to realize the ability of self-recovery. Tri-stablility consists of two bistable elements (BE). The detailed design of BE and SRTMD was described in the paper. The mechanism was illustrated theoretically. Further, the energy dissipation performance of SRTMD was evaluated numerically. The results show that the proposed damper has an excellent capability in energy dissipation and post-earthquake restorability. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Energy dissipation

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Feasibility Study of Optimization of Ultrasonic Tomography Algorithm in Concrete 2nd

Feasibility Study of Optimization of Ultrasonic Tomography A...

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2nd International Conference on Green Building, Civil engineering and Smart City, GBCESC 2023

作者： Zhang, Lu Qiao, Chong Jia, Shangda Li, Hongyu College of Civil Engineering and Architecture Guilin University of Technology Guangxi Guilin541004 China

ISBN: (纸本)9789819999460

Concrete, as the main material in modern engineering construction, is one of the most determinant factors of the mechanical performance in structure. To rapid evaluation of its status is essential for the structural safety. Ultrasonic tomography is a non-destructive technique that can visualize the internal defects in the concrete by reconstructing the velocity distribution. In this paper, we proposed some feasible implementations to optimize the ray-trace based tomography algorithm. The influential factors on the accuracy of ultrasonic tomography were studied using numerical models. The errors source due to the nature of ray-trace method was discussed. The corresponding be reduced in terms of solution-correction based on the benchmark for SART. Then the influential parameters (e.g. flaw size, transducer layout, and frequency) were discussed. Finally, the feasible optimization measures have been proposed and evaluated. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Concretes

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Structural health monitoring of precracked structures using an in-plane inverse crack-tip element

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International Journal of Mechanical System Dynamics 2024年第4期4卷 406-426页

作者： Ihtisham Khalid Zahid Ahmed Qureshi Hafiz Qasim Ali Selda Oterkus Erkan Oterkus Department of Aerospace Engineering College of Aeronautical EngineeringNational University of Sciences&TechnologyIslamabadPakistan Department of Naval Architecture Ocean&Marine EngineeringUniversity of StrathclydeGlasgowScotlandUK

This study investigates the application of the inverse finite element method(iFEM)in fracture mechanics by developing a novel two-dimensional six-node triangular inverse crack-tip *** its simplified formulation,the proposed inverse element is computationally efficient and ensures strain singularity at the crack tip by repositioning midside *** displacement-based stress intensity factor(SIF)computation methodology integrates seamlessly with the existing iFEM framework,making it highly suitable for real-time health assessment of structures with preexisting *** inverse element has been rigorously validated for shape-sensing and mixed-mode SIF calculations by considering various crack geometries and mixed-mode loading *** triangular inverse element demonstrates superior flexibility in handling structured and unstructured discretizations in mapping regular and complex geometries,particularly high-stress gradient areas like crack *** study also explores the variational least squares method for optimal sensor placement within the inverse element domain,ensuring accurate shape-sensing and SIF computations with fewer onboard strain *** proposed inverse formulation,with its accurate shape-sensing capabilities and precise reconstruction of fracture parameters,represents a significant advancement in the real-time Structural Health Monitoring of engineering structures with pre-existing cracks.

关键词： structural health monitoring stress intensity factor shape-sensing crack tip iFEM

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