International journal of structural and civil engineering research最新文献_第9页

Numerical Analysis of a Single Large-diameter Cofferdam under Offshore Loadings 近海荷载作用下单个大直径围堰的数值分析

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.2.107-112

Jeongsoo Kim, Yeon-Ju Jeong, Min-Su Park

引用次数: 0

Using the Moisture Retention Property of Recycled Coarse Aggregates for Self-Curing of High Performance Concrete 利用再生粗骨料的保湿性能进行高性能混凝土自养护

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.11.1.1-5

Z. Awadh, D. Dashti, S. Al-Bahar, J. Chakkamalayath

引用次数: 2

A Hybrid Approach of Using Both Simulation plus Neural Networks for Window Design Optimization and HVAC Energy Consumption Prediction Modeling 基于仿真和神经网络的窗设计优化与暖通空调能耗预测建模混合方法

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.4.300-309

Ye-Jin Kim, Seongju Chang

{"title":"A Hybrid Approach of Using Both Simulation plus Neural Networks for Window Design Optimization and HVAC Energy Consumption Prediction Modeling","authors":"Ye-Jin Kim, Seongju Chang","doi":"10.18178/ijscer.8.4.300-309","DOIUrl":"https://doi.org/10.18178/ijscer.8.4.300-309","url":null,"abstract":"Energy use in the building sector accounts for a large percentage of the world's total energy consumption. Specifically, the energy consumption from the whole life cycle perspective of building is 0.4% at design stage, 16% at construction stage, 83.2% at operation stage, and 0.4% at disposal stage. There have been many studies focusing on the design stage to find alternatives to enhance the energy efficiency of buildings. However, there have been few studies considering both of the efficient energy management of the building operation stage for the optimum design model at the same time. As a result of the design phase study, we proposed an improved window design alternative that could save 2736.06 kW of heating and cooling energy per year compared to the base case building. As for optimum window design, we proposed an ANN (Artificial Neural Network) model which predicts the heating and cooling loads. It satisfied the content of ASHRAE (American Society of Heating, Refrigerating, and AirConditioning Engineers) Guideline 14-2002 and IPMVP (International Performance Measurement & Verification Protocol). Based on this study, it would be possible to save energy from the perspective of a building’s entire life cycle if window selection options standard that can be referenced at building design stage and heating and cooling system control algorithm applicable to the operation stage are developed together. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131813259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Study on Mechanical Property of Bridge Bearings under Eccentric Compression and Shearing 偏心压剪作用下桥梁支座力学性能研究

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.3.265-269

Weiguo Huang, Xiuli Xu, Tao Wang, Kairui Wang, Weiqing Liu

引用次数: 1

Architectural Ephemerids in Terms of Generative and Parametric Design 基于生成与参数化设计的建筑蜉蝣

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.2.146-151

W. Rokicki, A. Stefańska

{"title":"Architectural Ephemerids in Terms of Generative and Parametric Design","authors":"W. Rokicki, A. Stefańska","doi":"10.18178/ijscer.8.2.146-151","DOIUrl":"https://doi.org/10.18178/ijscer.8.2.146-151","url":null,"abstract":"Nowadays architectural taste and the knowledge in fields such as architectural theory and practical abilities are not sufficient for being a good designer. Architects keep discovering multidisciplinary skills helpful in creating advanced designs. The use of digital generative design systems in designing becomes more prevalent for the first time being an architect means not only that one has to design the form and function of the building, an architect must understand the way the buildings live, from the conceptual phase till demolition. One of the most powerful directions in contemporary architecture is generative and parametric design. Thanks to the possibilities granted by computer-aided design, architects canstrive for surprisingly simple, free shaped structures which have not been possible up until this point. Since the XXI century mathematical algorithms have become more architecturally friendly and can be used to design more biomimetic forms. The aim of this paper is to present the newest trends in finding inspirations for the designing of contemporary buildings. Looking at living organisms in search for inspiration is probably most","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116009994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study of the Evolution of the Breach and the Discharge through the Breach Resulting from Piping Due to Seepage at the Mid-part of Earthfill Dam 土石坝中部渗流管道溃决口演化及溃决口流量试验研究

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.12.2.43-51

M. S. Guney, Emre Dumlu, Merve Okan

{"title":"Experimental Study of the Evolution of the Breach and the Discharge through the Breach Resulting from Piping Due to Seepage at the Mid-part of Earthfill Dam","authors":"M. S. Guney, Emre Dumlu, Merve Okan","doi":"10.18178/ijscer.12.2.43-51","DOIUrl":"https://doi.org/10.18178/ijscer.12.2.43-51","url":null,"abstract":"—One of the main factors that leads to earth-fill dam failures is the internal erosion, commonly referred to as piping. Regarding the geometry of the breach and the discharge of water flowing through the breach, many researchers working with numerical analyses in this field make some simplified assumptions. This study was carried out as a part of the project supported by the Turkish Council for Scientific and Technological Research (TUBITAK) and it includes experimental research with the goal of supplying the data required to carry out numerical analysis using more realistic approaches. A dam with a height of 65 cm, a bottom width of 200 cm and a crest width of 5 cm was built in a flume 1 m wide, 0.81 m high and 6.14 m long. Before the construction of the dam, some common soil mechanics tests were carried out. The dam was constructed by using a mixture consisting of 85 % fine sand and 15% clay. In order to generate the formation of the breach, a square shaped rock salt layer of 2 cm side lying from upstream to downstream was placed at 28 cm from the bottom of the dam body. The progression of the dam failure was captured by six cameras located at different locations. Gauss Area formula was applied to determine the time-varied breach areas at upstream and downstream sides. The discharge of water through the breach and average flow velocity were determined by using the continuity equation. The changes in water depth in the channel were also recorded. The experimental findings continue to be compared with numerical results obtained from the software PLAXIS 3D.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117175981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparisons of Three Different Sensors in Different Ambient Vibration Measurements 三种不同传感器在不同环境振动测量中的比较

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.1.75-78

O. Kaplan, Y. Güney

{"title":"Comparisons of Three Different Sensors in Different Ambient Vibration Measurements","authors":"O. Kaplan, Y. Güney","doi":"10.18178/ijscer.8.1.75-78","DOIUrl":"https://doi.org/10.18178/ijscer.8.1.75-78","url":null,"abstract":"The accuracy of the vibration measurements is directly related to testing equipment. There are some reasons that affect the performance of instruments like sensitivity, internal noise level, temperature, pressure etc. The influence of instruments should be considered in vibration recordings. There are too many products on the market. For the researchers, the main struggle is to decide which sensors or digitizers or their combinations should be used for the defined study aim or the equipment which they have is suitable or not for their purpose of the study. There are limited studies in this field in the literature. In this study, three different sensors were compared in the frequency domain, a seismometer and two different accelerometers. The seismometer is Guralp CMG-6TD (G6), one of the accelerometers is Guralp CMG-5TCDE (G5) and the other one is TDG Sensebox-7021 (TDG). The measurements were conducted in a four-story, residential reinforced concrete (RC) frame building. G6 and G5, G5 and TDG were compared to each other in two different measurements. As a result of this study, in all comparisons, the first mode’s frequencies were very close to each other and the frequency spectrums which established by means of the compared instruments were quite similar to each other. ","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127009480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study on Fracture Behavior of RC Piles and Superstructure Dynamic Response Using Centrifuge Model 基于离心模型的钢筋混凝土桩断裂行为及上部结构动力响应试验研究

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.8.3.234-239

Y. Miyachi, K. Hayashi, Taiki Saito

{"title":"Experimental Study on Fracture Behavior of RC Piles and Superstructure Dynamic Response Using Centrifuge Model","authors":"Y. Miyachi, K. Hayashi, Taiki Saito","doi":"10.18178/ijscer.8.3.234-239","DOIUrl":"https://doi.org/10.18178/ijscer.8.3.234-239","url":null,"abstract":"In past earthquake disasters, many pile foundations of building were damaged. Although many researchers have examined the relationships related to soilpile-superstructure interaction, few studies have been conducted to examine the damage of piles based on experiment. This study investigated the relationship between the pile fracture and dynamic response of a superstructure when the footing is embedded. Also, we tried evaluating the ultimate shear strength of a pile foundation when the pile was shear fractured. The shaking table test under a centrifuge field was conducted to investigate the behavior of the RC pile foundation. The diameter of the pile model is 25mm (1.25m in prototype scale). This pile model consists of mortar, four main reinforcement bars and a hoop reinforcement bar. The experimental model was set in a laminar shear box filled with Toyoura dry sand. The density of the soil was 60%. In the shaking table test, 11 different amplitude Rinkai waves were input under a 50G field. In the result of the experiment, the heads of the pile models were shear fractured. It caused the reduction of vibration transmissibility between the superstructure and the ground surface. The maximum inertial force of the superstructure mostly corresponded to the total value of the ultimate shear strength calculated using the shear strength of the pile model, the coefficient of pile group effect, and the resistance force of footing.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126383589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Assessment and LCA of a PCM-Based Coating for Residential Buildings of the North-West Mediterranean Region 地中海西北地区住宅用pcm基涂料的性能评价与LCA

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.12.3.56-62

E. Terrile, Luca Caliendo, E. Guglielmino, A. Marchitto, A. Borneto, L. Boccardo, Massimo Bacci

{"title":"Performance Assessment and LCA of a PCM-Based Coating for Residential Buildings of the North-West Mediterranean Region","authors":"E. Terrile, Luca Caliendo, E. Guglielmino, A. Marchitto, A. Borneto, L. Boccardo, Massimo Bacci","doi":"10.18178/ijscer.12.3.56-62","DOIUrl":"https://doi.org/10.18178/ijscer.12.3.56-62","url":null,"abstract":"—The paper focuses on the thermo-economic and life cycle assessment of three different Phase-Change Materials (PCM) for use in residential buildings on the North-West Italian coast. For the purpose of this work, we considered the climatic conditions of the city of Genoa, Italy, and used publicly available weather data from year 2020. We numerically assessed three PCMs against conventional thermal insulating materials, on three different flat wall geometries, using a one-dimensional heat transfer model, implemented in MATLAB. The most relevant characteristic of PCMs is their phase transition condition. Our model is based on the assumption that PCM transitions occur in a specific temperature range, and this yields to an instantaneous increase of their specific heat. Subsequently, based on a 25-year PCM life cycle assumption, we carried out a thermo-economic analysis based on the Net Present Value (NVP) index, a Life Cycle Assessment (LCA) and a carbon dioxide (CO2) saving estimation. Linear regression was used to predict the future economic and environmental scenarios. Simulation results showed that PCM performance is not as high as expected when benchmarked against a conventional insulating material. Specifically, PCMs do not reduce winter thermal demand and CO 2 emissions over their life cycle are twice those of the classical insulator taken as a reference. We then numerically evaluated their performance in a warmer climate, corresponding to a South Mediterranean region, and under these conditions PCMs outperformed against conventional insulators, thus justifying their current higher cost.","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125791046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Study of LNG Leakage Monitoring in Tank 液化天然气储罐泄漏监测研究

International journal of structural and civil engineering research Pub Date : 1900-01-01 DOI: 10.18178/ijscer.12.2.37-42

Ahri Lee, S. Song, Seung-Woo Han, Y. Han

{"title":"The Study of LNG Leakage Monitoring in Tank","authors":"Ahri Lee, S. Song, Seung-Woo Han, Y. Han","doi":"10.18178/ijscer.12.2.37-42","DOIUrl":"https://doi.org/10.18178/ijscer.12.2.37-42","url":null,"abstract":"—Liquefied Natural Gas (LNG) is a kind of clean energy. Also, many LNG Tank and LNG-powered vessels have been designed and built around the world. However, LNG introduces the potential risk of leakage and explosion accidents. Thus, it is necessary to conduct safety assessment on the layout of typical facilities during the initial design stage. In this paper, we tested with proposed FOC (Fiber Optic Cable) for cryogenic circumstance, and DTS (Distributed temperature Sensing) system. The proposed FOC which is composed by Stainless Steel Tube, Steel, and PE Soft Jacket with polyimide material is found to be efficient for LNG harsh temperature. The proposed LNG tank monitoring system with the proposed FOC can detect the occurrence of the location, temperature, and alarm of LNG tank leakage. It provides linear continuous temperature monitoring in real time along its long distance tank as well as pipeline during loading, offloading and cool down cycles. The purpose of this study is to lead to monitoring of LNG leakage by inducing a gradual temperature change without deformation in the LNG storage tank. In addition, it is checked whether the cryogenic temperature can be detected, and the cables capable of cryogenic monitoring are tested together with the suggested cable damage degree. This study is divided into three major studies. It is a function of detecting the temperature in the tank at cryogenic temperature, maintaining the temperature change gradually to prevent the LNG tank from being deformed when LNG is inserted in the tank, and detecting the rigidity of the cable. The data were analyzed by testing the data with average temperature, time to reach temperature and loss of cable in terms of cable stiffness. Corresponding monitoring taken on time will reduce the disaster degree of accidents to the least extent","PeriodicalId":101411,"journal":{"name":"International journal of structural and civil engineering research","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121493716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0