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International Journal of Structural Engineering最新文献

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In-plane vibration characteristics of isotropic plate with elastic edge restraints 具有弹性边约束的各向同性板面内振动特性
IF 1.3
International Journal of Structural Engineering Pub Date : 2020-03-03 DOI: 10.1504/ijstructe.2020.10027284
Kavikant Mahapatra, S. K. Panigrahi
{"title":"In-plane vibration characteristics of isotropic plate with elastic edge restraints","authors":"Kavikant Mahapatra, S. K. Panigrahi","doi":"10.1504/ijstructe.2020.10027284","DOIUrl":"https://doi.org/10.1504/ijstructe.2020.10027284","url":null,"abstract":"It has been well-established that in-plane vibration modes in structures occur at high frequencies. Hence, it is important from the perspective of design consideration to analyse the dynamic behaviour of built up structures subjected to high frequency excitation. In light of the above, the present analysis has been undertaken for analysis of in-plane free vibration characteristics of isotropic rectangular plates using single Fourier series solution for the in-plane plate displacements. The Fourier series representation has been supplemented with auxiliary functions, so chosen, as to remove any potential discontinuities associated with Fourier series function defined over the entire x-y plane. Rayleigh-Ritz procedure has been applied to determine the in-plane natural frequencies of the plate and generation of natural modes. The demonstrated numerical examples provide an excellent accuracy and convergence of resulting solutions and bring out the effects of variation of boundary conditions on the in-plane vibration characteristics.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44244408","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
Numerical study on the behaviour of end-plate beam-to-column connections under lateral impact loading 横向冲击荷载作用下端板梁柱连接性能的数值研究
IF 1.3
International Journal of Structural Engineering Pub Date : 2020-03-03 DOI: 10.1504/ijstructe.2020.10027288
A. Al-Rifaie, A. S. Al-Husainy, H. K. Shanbara
{"title":"Numerical study on the behaviour of end-plate beam-to-column connections under lateral impact loading","authors":"A. Al-Rifaie, A. S. Al-Husainy, H. K. Shanbara","doi":"10.1504/ijstructe.2020.10027288","DOIUrl":"https://doi.org/10.1504/ijstructe.2020.10027288","url":null,"abstract":"A parametric study is presented in this paper based on validated finite element models that were built in the companion paper that investigates the behaviour of two types of beam-column connections named flush plate connection (FPC) and partial depth end-plate connection (PDEPC) under quasi-static and lateral impact loadings. In the current study, the FE models were validated against additional two specimens tested with thick plates under lateral impact loading to raise the accuracy of the models. Different parameters were investigated such as the effect of mass and velocity, number of bolts, projectile shape and boundary conditions. Moreover, the study was extended to predict the lateral impact response of another type of connections named extended end-plate connection. The numerical results manifested that using thick end-plate is unfavourable to resist the lateral impact loading. Also, the deformation mode is not influenced by changing the projectile configuration or the boundary conditions.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43702389","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: 11
Shear strengthening of RC beams using GFRP sheets 玻璃钢薄板对钢筋混凝土梁的抗剪加固
IF 1.3
International Journal of Structural Engineering Pub Date : 2020-03-03 DOI: 10.1504/ijstructe.2020.10027290
A. Kumari, Nibedita Dalai, R. B. Swain, A. Nayak
{"title":"Shear strengthening of RC beams using GFRP sheets","authors":"A. Kumari, Nibedita Dalai, R. B. Swain, A. Nayak","doi":"10.1504/ijstructe.2020.10027290","DOIUrl":"https://doi.org/10.1504/ijstructe.2020.10027290","url":null,"abstract":"This paper presents an experimental investigation on the shear behaviour of RC beams strengthened with externally bonded glass fibre reinforced polymer (GFRP) sheets. The externally applied GFRP technique is significantly effective to enhance the ultimate load carrying capacity of RC beams. Two beams without GFRP and nine beams wrapped in different lay-up patterns with one/two layers of GFRP sheets have been tested for shear under two-point loading. Loads at first crack of beam/delaminating of GFRP, tearing point of GFRP and ultimate failure of the beam has been noted and types of failure have also been observed. Thereafter, a critical discussion is made with respect to increase in the strength of retrofitted beams with respect to the beam without GFRP in order to explore the optimal use of GFRP for strengthening the RC beams. The comparison is also made between the shear strength obtained from experimental results and that predicted from different design proposals available in the literature.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41733120","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: 3
Evaluation of a multimode pushover procedure for asymmetric and non-regular in plan reinforced concrete buildings under biaxial seismic excitation 非对称和不规则平面钢筋混凝土建筑在双轴地震激励下的多模态推覆过程评价
IF 1.3
International Journal of Structural Engineering Pub Date : 2019-07-31 DOI: 10.1504/IJSTRUCTE.2019.10022936
G. Manoukas
{"title":"Evaluation of a multimode pushover procedure for asymmetric and non-regular in plan reinforced concrete buildings under biaxial seismic excitation","authors":"G. Manoukas","doi":"10.1504/IJSTRUCTE.2019.10022936","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2019.10022936","url":null,"abstract":"In the present paper, a recently developed multimode pushover procedure is evaluated for non-regular in plan systems. The procedure is applicable to asymmetric in plan buildings under concurrent action of two horizontal seismic components and its main advantage is that it does not require independent analysis in two orthogonal directions. Thus, the use of simplified directional combination formulae, which is not valid in the nonlinear range, is avoided. The preliminary evaluation of the proposed methodology led to quite satisfactory results. However, the studies conducted up to date are limited to regular buildings. Hence, in the present study, the procedure is applied to four asymmetric and non-regular in plan reinforced concrete buildings. The values of selected response quantities are compared to those resulting from a conventional pushover analysis variant as well as from nonlinear dynamic analysis. The whole evaluation study leads to the derivation of useful conclusions.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41889249","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
Multi-objective optimisation of steel moment frames subjected to blast 爆炸作用下钢弯矩框架的多目标优化
IF 1.3
International Journal of Structural Engineering Pub Date : 2019-07-31 DOI: 10.1504/IJSTRUCTE.2019.10022939
N. Khaledy, A. Habibi, P. Memarzadeh
{"title":"Multi-objective optimisation of steel moment frames subjected to blast","authors":"N. Khaledy, A. Habibi, P. Memarzadeh","doi":"10.1504/IJSTRUCTE.2019.10022939","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2019.10022939","url":null,"abstract":"In recent decades, terrorist attacks have been increased all over the world. For this reason, the design of blast resistant structures is very crucial. On the other hand, for decades the optimum design of structures has been an interesting subject for structural engineers and researchers as it can provide cost and behavioural efficiencies. In the current research, the optimum design of steel moment frames under blast loading has been studied. Towards that end, first, a damage index is developed based on the maximum plastic strain in the members. Then, according to the damage index, a multi-objective optimisation methodology is proposed to minimise the structural weight and the damage index. The method utilises explicit nonlinear dynamic finite element analysis as the structural analysis method and NSGA-II optimisation algorithm as the optimisation technique. At the final point, based on the proposed method a framework is developed, and two numerical examples are studied. Results of this research show that the developed method is effective in achieving optimal designs with desired cost and damage.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46310828","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
Experimental and analytical study on reinforced concrete deep beams 钢筋混凝土深梁试验与分析研究
IF 1.3
International Journal of Structural Engineering Pub Date : 2019-07-31 DOI: 10.1504/IJSTRUCTE.2019.10022884
A. A. Dashlejeh, A. Arabzadeh
{"title":"Experimental and analytical study on reinforced concrete deep beams","authors":"A. A. Dashlejeh, A. Arabzadeh","doi":"10.1504/IJSTRUCTE.2019.10022884","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2019.10022884","url":null,"abstract":"A new simple strut-and-tie model was presented in this paper to study the behaviour of reinforced concrete deep beams. This model was obtained based on bottle-shaped struts that can predict flexural, bearing and shear modes of the failure. Also, the effect of web reinforcements was considered. The proposed model was verified by laboratory test results that obtained from five deep beams with a shear span-to-depth ratio of two and some other experimental results existing in the literature. Comparison of the results of the proposed model with relations from ACI 318 and AASHTO-LRFD codes and some other relations showed that the proposed model is efficiently capable of accurately predicting the ultimate load of simply supported deep beams. Also, comparison of experimental results demonstrated that the flexural capacity of deep beams obtained from the strut-and-tie model is conservative.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42805766","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: 5
Fluid-structure-soil interaction effect on dynamic behaviour of circular water tanks 流固土相互作用对圆形水箱动力性能的影响
IF 1.3
International Journal of Structural Engineering Pub Date : 2019-07-31 DOI: 10.1504/IJSTRUCTE.2019.10022935
A. Joseph, G. Joseph
{"title":"Fluid-structure-soil interaction effect on dynamic behaviour of circular water tanks","authors":"A. Joseph, G. Joseph","doi":"10.1504/IJSTRUCTE.2019.10022935","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2019.10022935","url":null,"abstract":"To investigate the seismic behaviour of concrete tanks on different soil conditions, fluid-structure-soil interaction system is simulated using finite element analysis software ANSYS. The influence of soil properties on tank's dynamic behaviour is studied by performing modal and transient analyses of cylindrical tanks resting on different soil conditions. Considering four different soil properties, comparisons are made on response parameters such as displacement in radial direction at top of tank wall, maximum hoop force, bending moment and base shear. The effect of frequency content of earthquake on seismic behaviour circular concrete tank is investigated by conducting time history analyses of the tanks under three different earthquakes. All the analyses were performed for half fill and full fill condition. Transient analyses show that the soil property, frequency content of earthquake and water fill condition have significant effect on seismic response of the water tanks.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45586305","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
New plasticity model using artificial neural networks 一种新的基于人工神经网络的塑性模型
IF 1.3
International Journal of Structural Engineering Pub Date : 2018-08-02 DOI: 10.1504/ijstructe.2018.10014822
Lyamine Briki, N. Lahbari
{"title":"New plasticity model using artificial neural networks","authors":"Lyamine Briki, N. Lahbari","doi":"10.1504/ijstructe.2018.10014822","DOIUrl":"https://doi.org/10.1504/ijstructe.2018.10014822","url":null,"abstract":"Concrete is one of the most widely used materials in building construction. Under static loads, the concrete is subjected to various stress states associated with significant deformation. In this paper, we study the feasibility of using artificial neural networks for modelling the mechanical behaviour of plain concrete in compression under static loading using the theory of plasticity. The database used for the development is obtained from a selection of previously published tests results and includes a series of uniaxial, biaxial and triaxial compression tests. This database is used for making and testing predictive models. The results of the ANN model can accurately predict the load resistance and deformation capacity in various compression stress states. Expansion and plastic contraction of concrete under different confining pressures and the nonlinear behaviour of concrete are simulated. The results show that the accuracy of the proposed ANN-based models is satisfactory compared with experimental results. It is also shown that the RBF neural network model may accurately represent the load resistance and deformation capacity for three types of compression tests.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":"9 1","pages":"258"},"PeriodicalIF":1.3,"publicationDate":"2018-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43208264","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
Review study on the current development of confined high-strength concrete 约束高强混凝土发展现状回顾研究
IF 1.3
International Journal of Structural Engineering Pub Date : 2018-08-01 DOI: 10.1504/IJSTRUCTE.2018.10014821
A. Z. Awang, C. Ma, A. Kueh, W. Omar
{"title":"Review study on the current development of confined high-strength concrete","authors":"A. Z. Awang, C. Ma, A. Kueh, W. Omar","doi":"10.1504/IJSTRUCTE.2018.10014821","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2018.10014821","url":null,"abstract":"This paper reviews the current development of the confined high-strength concrete (HSC). The differences between conventional concrete and HSC, the detailed mechanical characteristics of HSC, advantages and disadvantages, and the importance of confinement in HSC are critically reviewed. The beneficial effects of confinement in improving the low-ductility of HSC are also discussed. In addition, the recent progress in the research on confined HSC is presented. Subsequently, the existing stress-strain models for confined concrete are reviewed. In conclusion, the review paper notes and highlights some essentials points from the aforementioned discussion where several recommendations have been made for the advancement of this ever-developing topic.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":"9 1","pages":"224"},"PeriodicalIF":1.3,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45658516","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
Scheme for beam progressive collapse mitigation 梁渐进倒塌缓解方案
IF 1.3
International Journal of Structural Engineering Pub Date : 2018-08-01 DOI: 10.1504/IJSTRUCTE.2018.10014818
Bilal El-Ariss, S. Elkholy
{"title":"Scheme for beam progressive collapse mitigation","authors":"Bilal El-Ariss, S. Elkholy","doi":"10.1504/IJSTRUCTE.2018.10014818","DOIUrl":"https://doi.org/10.1504/IJSTRUCTE.2018.10014818","url":null,"abstract":"Latest recommendations have made provisions to improve structure resistance to progressive collapse in the event of interior support collapse. This paper defines a mitigating scheme to repel progressive collapse in reinforced concrete beams due to damaged interior supporting member by providing a new path to transfer the loads to other supporting members. The mitigating scheme suggests the use of unbounded unstressed externally installed fibre reinforced plastic cables with straight profile and three deviators. An open source finite element package for structural analysis (ZEUS-NL) using the fibre element approach is adopted to numerically model the mitigated beam. The proposed numerical model evaluates the progressive collapse of such beams using a push-down analysis to simulate column removal. It assumes that the anchorage and deviator locations of the external cables act as rigid arms that connect the external cables to the beam. The numerical results demonstrate that the defined mitigating scheme increases the beam resistance to progressive collapse due to interior column failure.","PeriodicalId":38785,"journal":{"name":"International Journal of Structural Engineering","volume":"9 1","pages":"175"},"PeriodicalIF":1.3,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45608732","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
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