Australian Journal of Structural Engineering最新文献_第7页

Verification of shear and torsional strength of prestressed concrete girders predicted using Australian Standards 用澳大利亚标准预测预应力混凝土梁的抗剪和抗扭强度的验证

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-04-03 DOI: 10.1080/13287982.2021.2019884

H. Pham

引用次数: 0

Numerical calculation on the seismic performance of a steel frame beam-to-column joint with welding residual stress 考虑焊接残余应力的钢框架梁柱节点抗震性能的数值计算

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-04-03 DOI: 10.1080/13287982.2021.2022448

Longyu Cai, Wei Zhang, Z. Liu

{"title":"Numerical calculation on the seismic performance of a steel frame beam-to-column joint with welding residual stress","authors":"Longyu Cai, Wei Zhang, Z. Liu","doi":"10.1080/13287982.2021.2022448","DOIUrl":"https://doi.org/10.1080/13287982.2021.2022448","url":null,"abstract":"ABSTRACT Residual stress has almost always been an essential issue associated with welded structural steel. In this paper, thermal elastic–plastic finite element method (FEM) is adopted to calculate the welding residual stress of a steel frame beam-to-column, and then the calculated residual stress is applied to the subject as an initial condition to calculate its mechanical behaviour. Both monotonic loading and cyclic loading are designed to simulate the seismic behaviour of the structure. Bonora damage model [41–44] is used to calculate the initiation and propagation of the crack. Finally, the hysteretic curve of the structure under cyclic loading is obtained. The results show that the main component of the welding residual stress along weld fillers of the steel frame beam-to-column is longitudinal tensile stress, and the magnitude of the residual tensile stress in welding stable zone is about 1.2 times of the material yield stress. Welding residual stress mainly affects the ductility and fracture behaviour of the steel frame beam-to-column. Under monotonic loading, the drift ratio of crack initiation with welding residual stress is reduced by 9% compared with that without welding residual stress. Under cyclic loading, when welding residual stress is taken into account, the crack initiates a little earlier than when welding residual stress is not considered. Compared with monotonic loading, crack initiates much easier when the structure is subjected to cyclic loading.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87994014","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: 1

Probabilistic constitutive law for masonry veneer wall ties 砌体贴面墙铰的概率本构律

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-04-03 DOI: 10.1080/13287982.2021.2021628

I. B. Muhit, M. Stewart, M. Masia

{"title":"Probabilistic constitutive law for masonry veneer wall ties","authors":"I. B. Muhit, M. Stewart, M. Masia","doi":"10.1080/13287982.2021.2021628","DOIUrl":"https://doi.org/10.1080/13287982.2021.2021628","url":null,"abstract":"ABSTRACT In a masonry veneer wall system, tie strengths and stiffnesses vary randomly and so are not consistent for all ties throughout the wall. To ensure an economical and safe design, this paper uses tie calibration experimental approach in accordance with the standard AS2699.1 to investigate the tie failure load under compression and tension loading. Probabilistic wall tie characterisations are accomplished by estimating the mean, coefficient of variation and characteristic axial compressive and tensile strength from 50 specimens. The displacement across the cavity is recorded, which resulted the complete load versus displacement response. Using the maximum likelihood method, a range of probability distributions are fitted to tie strengths at different displacement histogram data sets, and a best-fitted probability distribution is selected for each case. The inverse cumulative distribution function plots are also used along with the Anderson-Darling test to infer a goodness-of-fit for the probabilistic models. An extensive statistical correlation analysis is also conducted to check the correlation between different tie strengths and associated displacement for both compression and tension loading. Based on the findings, a wall tie constitutive law is proposed to define probabilistic tie behaviour in numerical modelling.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79219797","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: 4

Bond-slip Behaviour of Deformed Rebars in Normal and High Strength Concrete at Elevated Temperature-a review 高温下普通和高强混凝土中变形钢筋粘结滑移行为的研究进展

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-03-30 DOI: 10.1080/13287982.2022.2055816

S. H. Buch, R. Suhail

引用次数: 2

Editorial address 编辑地址

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-03-20 DOI: 10.1097/00000658-194302000-00001

N. Lam

引用次数: 0

Influence of modified two-stage mixing approaches on recycled aggregate treated with a hybrid method of treatment 改良两段混合方式对混合法处理再生骨料的影响

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-03-17 DOI: 10.1080/13287982.2022.2048479

A. Verma, V. S. Babu, A. S.

{"title":"Influence of modified two-stage mixing approaches on recycled aggregate treated with a hybrid method of treatment","authors":"A. Verma, V. S. Babu, A. S.","doi":"10.1080/13287982.2022.2048479","DOIUrl":"https://doi.org/10.1080/13287982.2022.2048479","url":null,"abstract":"ABSTRACT The depletion of natural resources occurs at a rapidly decreasing rate due to the growing demand for concrete. Therefore, the current research study uses recycled aggregate (RA) in concrete as a replacement for natural aggregate (NA) after proper treatment. The fresh, hardened, and durability properties have been examined in the current work. The adherent mortar over recycled aggregate (RA) makes it lower grade due to increased water absorption and lower strength. Based on Literature, natural aggregate concrete (NAC) has better strength and durability properties than recycled aggregate concrete (RAC). While making concrete using RA, using a two-stage mixing approach (TSMA) improves RAC properties better than the normal mixing approach (NMA). This study examines the influence of different mixing methods on concrete made from treated recycled aggregate(TRA). Four different mixing variants (viz. NMA, TSMA, TSMA1, TSMA2) were used in this work. The natural aggregate (NA) was replaced with TRA at various replacement levels in all variants, including 0%, 25%, 50%, 75%, and 100% in a control mix of M40. Based on the experimental results, the mixing method TSMA2 improved the various properties like strength and interfacial transition zone (ITZ) of TRA concrete compared to all other mixing techniques considered.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75316058","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

Influence of incinerated biomedical waste ash and waste glass powder on the mechanical and flexural properties of reinforced geopolymer concrete 焚烧生物医学废灰和废玻璃粉对增强地聚合物混凝土力学和抗弯性能的影响

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-03-03 DOI: 10.1080/13287982.2022.2044613

S. A, M. M, A. K, C. A., K. R.

{"title":"Influence of incinerated biomedical waste ash and waste glass powder on the mechanical and flexural properties of reinforced geopolymer concrete","authors":"S. A, M. M, A. K, C. A., K. R.","doi":"10.1080/13287982.2022.2044613","DOIUrl":"https://doi.org/10.1080/13287982.2022.2044613","url":null,"abstract":"ABSTRACT An extensive experimental study was implemented to investigate the structural and material properties of Waste Glass Powder (WGP) as fine aggregate in Incinerated Bio-Medical Waste Ash (IBWA) – Ground Granulated Blast Furnace Slag (GGBFS) based Geopolymer Concrete (GPC). The research was based on the compressive, splitting tensile and flexural efficiency of GGBS-based geopolymer concrete mixed with IBWA as binder and WGP as fine aggregate. To determine the concrete strength, four different types of proportions were designed as beams and columns. The mechanical properties such as compressive strength and splitting tensile strength and flexural properties for beams such as deflection, ductility factor, flexural strength, and toughness index, and flexural properties for columns such as load-carrying capacity, stress-strain behaviour, and load-deflection behaviours were calculated. Comparative analyzes were performed to assess the efficiency of Waste Glass Powder and Incinerated Biomedical Waste Ash in GGBS-based geopolymer concrete against Reinforced Cement Concrete (RCC). The findings showed that the Waste Glass Powder and Incinerated Bio-Medical Waste Ash embedded in GGBS-based Geopolymer concrete exhibited the highest fracture energy, as predicted from the mechanical bond between the waste materials and the GGBS-based Geopolymer concrete.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84978661","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

Accurate finite element modeling of the mechanical behavior of SS304 across the peak dynamic strain aging temperatures SS304在峰值动态应变时效温度下的力学行为的精确有限元建模

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-03-01 DOI: 10.1080/13287982.2022.2046317

S. Patra, S. Dhar, S. Acharyya

引用次数: 0

Ternary combined industrial wastes for non-fired brick 未烧结砖的三元复合工业废料

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-02-22 DOI: 10.1080/13287982.2022.2038406

PhD G M Sadiqul Islam, PhD Ali A. Shubbar, BSc Sudipta Sarker, Research Assistant, PhD Reader Monower Sadique, G. M. Sadiqul, Islam Professor

{"title":"Ternary combined industrial wastes for non-fired brick","authors":"PhD G M Sadiqul Islam, PhD Ali A. Shubbar, BSc Sudipta Sarker, Research Assistant, PhD Reader Monower Sadique, G. M. Sadiqul, Islam Professor","doi":"10.1080/13287982.2022.2038406","DOIUrl":"https://doi.org/10.1080/13287982.2022.2038406","url":null,"abstract":"ABSTRACT The demand for bricks in South Asia is increasing significantly due to growth in the construction sector. Bricks produced using traditional firing technique and fertile clay contribute significantly to some of the worst air pollution in the world. Therefore, the utilisation of other environment-friendly alternative to conventional bricks is considered an urgent need to conserve a clean environment and help in saving its fertile soil. This research aimed to explore geopolymerisation technique with ternary combined industrial waste/by-products as binders including high volume Ladle Furnace Slag (LFS), Fly ash and Ground Granulated Blast Furnace Slag (GGBS) to produce non-fired and clay-free brick alternatives. The first two byproducts are locally produced in the related iron and power industry while GGBS are being imported by the cement industry. The results indicated that all the prepared samples conform to the minimum compressive strength requirement of 20.7 MPa and maximum water absorption rate of 17% for common brick with severe weathering as per ASTM C62. This highly promising performance pronounced the use of locally available high volume LFS and other industrial waste/by-products materials in non-fired building block production to achieve a cleaner, environmental-friendly sustainable society as well as a sustainable route for industrial waste management.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82854700","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

Experimental study of the freeze and thaw effects on the mechanical behaviour of self-compacting high-performance fibre-reinforced concrete containing active powders and/or Carbon NanoTubes 含活性粉末和/或碳纳米管的高性能自密实纤维增强混凝土冻融效应的实验研究

IF 1.1

Australian Journal of Structural Engineering Pub Date : 2022-01-02 DOI: 10.1080/13287982.2021.1998994

I. Goodarzi, S. M. Mirhosseini, E. Zeighami

{"title":"Experimental study of the freeze and thaw effects on the mechanical behaviour of self-compacting high-performance fibre-reinforced concrete containing active powders and/or Carbon NanoTubes","authors":"I. Goodarzi, S. M. Mirhosseini, E. Zeighami","doi":"10.1080/13287982.2021.1998994","DOIUrl":"https://doi.org/10.1080/13287982.2021.1998994","url":null,"abstract":"ABSTRACT In this paper, the mechanical properties of High-performance fiber reinforced cementitious composites containing active powders, such as metakaolin and fly ash, with a combination of carbon nanotubes (CNTs) and steel fibers have been investigated. The presence of active powders and their combination with micro-silica, increase the physical and mechanical properties of fibre concrete. Subsequently, by adding CNTs, the precise microstructural properties of concrete before and after 300 cycles of thawing-freezing, according to the ASTMC666 standard by scanning electron microscope (SEM) have been analysed. The results reveal that by adding active powders and steel fibres in the concrete, the volume of cavities reduces, and the bonding between concrete components increases. moreover, the addition of functionalised CNTs creates the crack bridge and prevents the propagation and growth of micro-cracks. This leads to increasing the mechanical properties of concrete before the cycles and decreasing the strength loss (bendingand compressive) after thawing-freezing cycles.","PeriodicalId":45617,"journal":{"name":"Australian Journal of Structural Engineering","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85864097","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: 1