Proceedings of the Fourteenth International Conference on Computational Structures Technology最新文献_第4页

Flexural Behavior of Ferrocement Cold-Formed Hollow Steel Composite Beams 钢筋混凝土冷弯空心钢组合梁的受弯性能

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.14.1

E. Elkassas, A. Morsy, M. Marzouck

{"title":"Flexural Behavior of Ferrocement Cold-Formed Hollow Steel Composite Beams","authors":"E. Elkassas, A. Morsy, M. Marzouck","doi":"10.4203/ccc.3.14.1","DOIUrl":"https://doi.org/10.4203/ccc.3.14.1","url":null,"abstract":"Experimental and numerical studies are carried out to investigate the flexural behavior of precast lightweight composite beams. This composite beam is comprised of a slender cold-formed hollow section of dimension (140x180 mm) with different thicknesses surrounded by a ferrocement layer. This composite beam is called a precast ferrocement cold-formed hollow section (FCH). The main problem in this study is the local buckling of cold-formed hollow sections before reaching yield. The objective of these studies is to examine the flexural behavior of precast ferrocement cold-formed composite beams with and without shear connectors. Nine beams with a span of 1500 mm were tested under a four-point bending system to evaluate their flexural strength. Four different parameters have been examined, which are the spacing of shear connectors, ferrocement thickness, and hollow steel section thickness. The test results showed that the presence of a 30 mm ferrocement layer increased the capacity by 18% when compared with the control specimen. The presence of shear connectors increases the capacity by 30%. Increasing the steel cross-section thickness leads to an increase in the capacity by 16-33% and finally, increasing the surface friction has a very small effect on the section capacity, which can be neglected. The finite element models were developed and validated by the test results. The results show a close agreement between the experimental and finite element results. Extensive parameters were investigated, which were mortar compressive strength (f' c ) and the position of shear connectors. The results indicated that increasing mortar strength leads to an increase in section capacity ranging between 11% and 18%. The presence of a shear connector in the web and the lower flange of the hollow section have a very small effect.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"82 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":"114692403","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 Investigation of the 3D Response of Masonry Skew Arches and Bridges 斜拱桥砌体三维响应的数值研究

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.4

M.S. El Ashri, S. Grosman, L. Macorini, B. Izzuddin

{"title":"Numerical Investigation of the 3D Response of Masonry Skew Arches and Bridges","authors":"M.S. El Ashri, S. Grosman, L. Macorini, B. Izzuddin","doi":"10.4203/ccc.3.9.4","DOIUrl":"https://doi.org/10.4203/ccc.3.9.4","url":null,"abstract":"This paper investigates the behaviour up to collapse of brick-masonry skew arches and bridges using detailed mesoscale models. The adopted 3D modelling approach is based on an explicit representation of masonry bond employing separate descriptions for units and mortar joints, where material nonlinearity is accounted for using nonlinear interface elements. Computational efficiency is improved with the adoption of domain partitioning, where the analysed structure is decomposed into sub-domains that communicate at the partition boundaries enabling parallel computation. Numerical simulations have been performed on a range of realistic structures with the aim of identifying key behavioural characteristics leading to the development of a profound understanding of the complex 3D behaviour of masonry skew arches. This will eventually result in a realistic evaluation of the actual condition of existing masonry skew bridges, leading to an effective implementation of potential strengthening measures. Moreover, it can also contribute to the development of simplified practical analysis tools for the assessment of these complex structures.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"41 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":"124765233","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 Modelling of Brick-mortar Masonry Structures under Fatigue Loading 疲劳荷载作用下砖混砌体结构的数值模拟

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.5

A. Soyemi, S. Grosman, L. Macorini, B. Izzuddin

引用次数: 0

Meshless simulation of infinitesimal elastoplastic deformation of a 3D body 三维物体无限小弹塑性变形的无网格模拟

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.3.4

F. Strniša, M. Jančič, G. Kosec

引用次数: 0

Interpretable and Flexible Generalization of Evolving Computational Materials' Framework for Heterogeneous Composite Structures 非均质复合材料结构演化计算材料框架的可解释和灵活推广

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.22.3

M. Bazroun, Y. Yang, I. Cho

引用次数: 0

A 3D fiber beam element based on a plastic damage model for prestressed concrete bridges 基于塑性损伤模型的预应力混凝土桥梁三维纤维梁单元

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.12.1

L. Parente, D. Addessi, E. Spacone

引用次数: 0

A Novel Design Approach of Thin-Walled Structures with Lattices and Stiffeners based on Multi-Material Topology Optimization 基于多材料拓扑优化的薄壁格筋结构设计新方法

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.5.1

Y. Li, T. Gao, Q. Zhou, P. Chen, D. Yin, W. Zhang

引用次数: 0

Numerical Modelling of Flat Arch Masonry Retaining Walls 平拱砌体挡土墙数值模拟

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.9.2

H.S. Rathnayake, A. Ahmed, G. Iskander, M. Kurukulasuriya, N. Shrive

引用次数: 0

Beam model for thermal buckling of thin-walled functionally graded box-beam 薄壁梯度功能箱梁热屈曲的梁模型

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.15.1

S. Kvaternik Simonetti, D. Lanc, G. Turkalj, D. Banić

{"title":"Beam model for thermal buckling of thin-walled functionally graded box-beam","authors":"S. Kvaternik Simonetti, D. Lanc, G. Turkalj, D. Banić","doi":"10.4203/ccc.3.15.1","DOIUrl":"https://doi.org/10.4203/ccc.3.15.1","url":null,"abstract":"The paper presents the beam finite element model for thermal buckling analysis of thin-walled functionally graded (FG) box-beams. The model is based on Euler-Bernoulli-Navier bending theory and Vlasov torsion theory. The cross-sectional displacement field includes the effects of warping torsion and large rotations. Material properties are assumed to be graded across the wall thickness and considered as a function of temperature. Three cases of the temperature distribution across the thickness of the cross-section walls are considered, which are uniform, linear and nonlinear. The critical buckling temperature and post-buckling behavior of FG box-beams under thermal loading with different values of power law index p for different types of boundary conditions, clamped-clamped (CC), clamped-simply supported (CS), and simply supported (SS), are given to investigate the effects of the power-law index on structural behavior. Nonlinear stability analysis is performed to obtain the thermal load versus displacement curves. The accuracy and reliability of the beam model are verified by comparing it with previous research results and several benchmark examples.","PeriodicalId":143311,"journal":{"name":"Proceedings of the Fourteenth International Conference on Computational Structures Technology","volume":"38 5 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":"129917348","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 Analysis of Truss Bridge Subjected to Earthquake and Flood 地震和洪水作用下桁架桥的数值分析

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI: 10.4203/ccc.3.12.5

S. Fujisawa, Y. Yamaguchi, S. Yotsui, Y. Satofuka, K. Izuno

引用次数: 0