Australian Journal of Structural Engineering最新文献_第8页

Non-Iterative Model for Analysis of RC Beams Strengthened with Textile Reinforced Concrete 纺织钢筋混凝土加固RC梁的非迭代模型分析

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-08-18 DOI: 10.1080/13287982.2021.1962618

S. Gopinath, N. Iyer, R. Gettu

{"title":"Non-Iterative Model for Analysis of RC Beams Strengthened with Textile Reinforced Concrete","authors":"S. Gopinath, N. Iyer, R. Gettu","doi":"10.1080/13287982.2021.1962618","DOIUrl":"https://doi.org/10.1080/13287982.2021.1962618","url":null,"abstract":"ABSTRACT Textile reinforced concrete (TRC) is a promising material for strengthening of reinforced concrete beams due to the possibility of customizing both textile and matrix to achieve the targeted strain hardening under tensile load. Considering the complexity involved in material behaviour of TRC, the independent material characteristics majorly influence the response of the strengthened system. Presently, simple mathematical prediction models for TRC strengthened systems are few. The objective of this paper is to propose a simplified non-iterative approach to predict the behavior of RC beams strengthened with TRC. The material response calibrated based on experimental data of RC and TRC is used to develop the model using two material properties and ten non-dimensional parameters. The material parameters are described using Young´s modulus and first-crack strain of TRC in addition to various non-dimensional parameters that define strain hardening of TRC, tensile strength of steel, compressive strength of concrete and ultimate strain levels. The strain hardening of TRC is accurately incorporated, and the appropriate failure criteria for the strengthened system are idealized. Curvature at a particular section is calculated by using strain values. Parametric studies revealed that the material nonlinearity is adequately addressed and salient stages of the strengthened system predicted till failure.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":"66 1","pages":"277 - 288"},"PeriodicalIF":1.1,"publicationDate":"2021-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77957434","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

Simple connections retrofitted by dampers and bracket-tendon system against progressive collapse 简单的连接通过阻尼器和支架-肌腱系统进行改造，以防止逐渐坍塌

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-08-11 DOI: 10.1080/13287982.2021.1964207

M. Shirinzadeh, A. Haghollahi, Hassan Gomar

引用次数: 1

Torsional behaviour of high strength concrete beams with spiral reinforcement 螺旋配筋高强混凝土梁的抗扭性能

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-08-04 DOI: 10.1080/13287982.2021.1962489

Enas Al-Faqra, Y. Murad, Mu'tasim Abdel Jaber, Nasim Shatarat

{"title":"Torsional behaviour of high strength concrete beams with spiral reinforcement","authors":"Enas Al-Faqra, Y. Murad, Mu'tasim Abdel Jaber, Nasim Shatarat","doi":"10.1080/13287982.2021.1962489","DOIUrl":"https://doi.org/10.1080/13287982.2021.1962489","url":null,"abstract":"ABSTRACT The torsional behaviour of high-strength concrete beams that are transversely reinforced with continuous spiral reinforcement is experimentally investigated in this research. Seventeen specimens are divided into four groups according to their concrete strength: 25, 50, 60, and 70 MPa. Two types of transverse reinforcement, including closed and spiral stirrups, are used at a transverse spacing of 75 and 125 mm for each group. Test results are compared to the analytical values predicted using the ACI equation. Test results have shown an enhancement in the ultimate torsional capacity for the specimens made with high strength concrete compared to those made using normal strength concrete. The enhancement percentage ranges from 1.4% to 46.3%. In addition, results have shown an enhancement in the ultimate torsional capacity for specimens reinforced with spiral reinforcement compared to specimens made with conventional closed stirrups. The enhancement percentage varies from 8.3% to 34.6%. The study concluded that utilising continuous spiral reinforcement would result in higher ultimate torsional capacity than traditional closed stirrups for the same strength of concrete and that the torsion equations of ACI-318 M-19 are applicable and conservative for high strength concrete with a continuous spiral reinforcement.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":"57 1","pages":"266 - 276"},"PeriodicalIF":1.1,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81343118","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: 6

Testing the applicability of design code provisions - case of unconventional shear reinforcement 检验设计规范规定的适用性。非常规抗剪加固实例

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-07-29 DOI: 10.1080/13287982.2021.1958507

K. Jaafar

引用次数: 0

RC walls in Australia: displacement-based seismic design in accordance with AS 1170.4 and AS 3600 澳大利亚的钢筋混凝土墙:根据AS 1170.4和AS 3600的基于位移的抗震设计

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-07-03 DOI: 10.1080/13287982.2021.1954306

S. Menegon, H. Tsang, John L. Wilson, N. Lam

{"title":"RC walls in Australia: displacement-based seismic design in accordance with AS 1170.4 and AS 3600","authors":"S. Menegon, H. Tsang, John L. Wilson, N. Lam","doi":"10.1080/13287982.2021.1954306","DOIUrl":"https://doi.org/10.1080/13287982.2021.1954306","url":null,"abstract":"ABSTRACT Displacement-based methods, such as a non-linear static pushover analysis (e.g. the capacity spectrum method), have many advantages compared to traditional force-based design methods. However, implementing a non-linear analysis and design method in accordance with the Australian Standard for concrete structures (AS 3600) introduces many difficult technical issues into the design, of which the standard provides little guidance. The aim of this study is to provide a framework and general guidance for designers who wish to perform non-linear displacement-based analysis methods for RC wall buildings. The paper will present how these methods can be used in accordance with the Australian Standard for earthquake actions (AS 1170.4) to assess seismic compliance and then provide recommendations for the requirements stipulated by AS 3600, which includes an experimentally validated tension stiffening model, nonlinear stress-strain material curves, mean material properties and material strain limits. The paper is concluded with a case study example of how a displacement-based seismic assessment can be performed using a typical case study building.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":"36 1","pages":"205 - 221"},"PeriodicalIF":1.1,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79447910","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

Statistical analysis of material properties and recommended values for the assessment of RC structures in Australia 澳大利亚钢筋混凝土结构材料性能的统计分析及评估建议值

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-07-03 DOI: 10.1080/13287982.2021.1946993

S. Menegon, H. Tsang, John L. Wilson, N. Lam

{"title":"Statistical analysis of material properties and recommended values for the assessment of RC structures in Australia","authors":"S. Menegon, H. Tsang, John L. Wilson, N. Lam","doi":"10.1080/13287982.2021.1946993","DOIUrl":"https://doi.org/10.1080/13287982.2021.1946993","url":null,"abstract":"ABSTRACT This paper presents a statistical analysis of the actual mean material properties for typical grades of concrete and reinforcement available in Australia. The analysis was performed using a database of 3,447 concrete cylinder test results and 15,201 reinforcement tensile test results. The test results were taken over a period from 2009 to 2021. The paper provides a summary of the mean values and respective coefficient of variation values for the different grades of concrete and reinforcement that make up the database. Distinctive manufacturing trends and variability between suppliers were observed for reinforcement samples and appropriate recommendations have been proposed. Researchers or designers can adopt these values to undertake probabilistic assessments of RC structures. The paper also provides recommendations for mean material properties for the purpose of undertaking non-linear analysis of RC structures. The database of test results also includes early age strength data for concrete, which have been used to provide recommendations for predicting the early age strength of various standard grades of concrete available in Australia. The paper also presents an assessment of the theoretical characteristic values from the database for the various grades of reinforcement and concrete and how they compare to respective specified code requirements.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":"35 1","pages":"191 - 204"},"PeriodicalIF":1.1,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79877920","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

Behaviour of interlocking concrete slab and steel composite beam incorporated bolt shear connector 混凝土板与钢组合梁结合螺栓剪切连接件的互锁性能

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-07-03 DOI: 10.1080/13287982.2021.1957553

Nadiah Loqman, N. A. Safiee, Wong Hui Kah, N. Abu Bakar, N. A. Mohd. Nasir

{"title":"Behaviour of interlocking concrete slab and steel composite beam incorporated bolt shear connector","authors":"Nadiah Loqman, N. A. Safiee, Wong Hui Kah, N. Abu Bakar, N. A. Mohd. Nasir","doi":"10.1080/13287982.2021.1957553","DOIUrl":"https://doi.org/10.1080/13287982.2021.1957553","url":null,"abstract":"ABSTRACT The complexity of concrete and steel in composite beam has been addressed in many studies previously. However, the use of precast concrete slab in steel–concrete composite construction is considered as new, hence many factors that affect its behaviour need to be investigated. It becomes interesting when the application of interlocking tongue and groove joints between precast concrete slabs is introduced. For this purpose, a performance comparison between normal precast slab and interlocking tongue and groove precast slab in composite construction is conducted using finite element analysis. Both are designed to have full composite action using bolted shear connector. In this research, a total of five models including a control model were developed to study the flexural behaviour of designated composite beam. The model has been verified against experimental results, which showed a good agreement . Parametric studies were performed to investigate the effects of bolt size and height on flexural behaviour of the beam. The present study demonstrated that the presence of interlocking joints between slabs with larger diameter bolt can efficiently improve the stiffness of the composite system.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":"18 1","pages":"236 - 249"},"PeriodicalIF":1.1,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74264649","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

Vibration control of structure by optimising the placement of semi-active dampers and fuzzy logic controllers 基于半主动阻尼器和模糊控制器的结构振动控制

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-07-03 DOI: 10.1080/13287982.2021.1957198

Kambiz Takin, R. Doroudi, Siyamak Doroudi

引用次数: 6

Glulam – closed form solution using statistical smearing, truncating, calibrating 胶合板-封闭形式溶液采用统计涂抹，截断，校准

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2021-06-11 DOI: 10.1080/13287982.2021.1926062

H. Milner

引用次数: 0

Evaluation of self-healing performance of concrete containing fly ash and fibres 掺粉煤灰和纤维混凝土自愈性能评价