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Uncertainty of concrete strength in shear and flexural behavior of beams using lattice modeling
《结构与土木工程前沿(英文)》 2023年 第17卷 第2期 页码 306-325 doi: 10.1007/s11709-022-0890-5
关键词: lattice modeling shear failure flexural failure uncertainty deficiency numerical simulation
Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH
《结构与土木工程前沿(英文)》 2019年 第13卷 第5期 页码 1251-1270 doi: 10.1007/s11709-019-0554-2
关键词: flexural-shear-axial failure drift capacity reinforced concrete columns statistical analysis fragility curves
Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 352-360 doi: 10.1007/s11709-017-0453-3
Concrete members historically have used either pre-stressed steel or steel bars. In recent years there has been an increased interest in the use of fiber reinforced polymer (FRP) materials. However, the flexure behavior of a hybrid system reinforced by the combination of pre-stressed steel and glass fiber reinforced (GFRP) is still relatively unknown. The purpose of this work is to study this. Two slabs of 100 and 150-millimeter thickness, with a span of 2.1 m reinforced with both pre-stressing steel and GFRP were constructed and tested to failure using ACI 318-11 and ACI 440.1R-15. The concrete had strength of 31 MPa and the slabs were respectively reinforced with 5#4 bars and 3#5 bars. Each slab had 37.41 mm2 prestressing wire with a failure stress of 1722.5 MPa. The experimental flexural strength and deflection of slabs were compared with their respective sizes theoretical slabs. The theoretical slabs were either reinforced with pre-stressed steel or GFRP rebars, or a hybrid system. It was found that the hybrid system produces better results.
Nazim Abdul NARIMAN, Martin HUSEK, Ilham Ibrahim MOHAMMAD, Kaywan Othman AHMED, Diyako DILSHAD, Ibrahim KHIDR
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 378-389 doi: 10.1007/s11709-021-0706-z
关键词: three-point flexure test softening stage flexural crack flexural strain
Hakan T TURKER
《结构与土木工程前沿(英文)》 2022年 第16卷 第8期 页码 1017-1028 doi: 10.1007/s11709-022-0871-8
关键词: testing apparatus & methods plain concrete tensile properties biaxial flexural strength triangular plate method
Integrated management of cardiac failure: the cardiac failure clinic
null
《医学前沿(英文)》 2011年 第5卷 第1期 页码 20-25 doi: 10.1007/s11684-011-0106-1
The prevalence of the risk factors and the risk of cardiac failure are both increasing in China. This might be the consequence of the changes of the life conditions (emigration to the urban areas, changes in the diet and life style, lack of physical exercise, etc.). The wide range of clinical presentations of cardiac failure (acute or chronic) and of therapeutic approaches (medical or surgical) makes necessary the integration within the same structure of the various experts involved in the diagnosis and the treatment of cardiac diseases. Technologic and human resources required to offer all the options represent a multifaceted commitment which should be focused optimally in dedicated centers. In these centers, collaboration should replace competition between the medical and the surgical cardiac specialists. Development of team work should permit to optimize the cost efficacy of the treatments. Most of all, such a structure will facilitate the translation of innovative therapies between the research centers and clinical facilities.
关键词: cardiac failure cardiac transplantation mechanical circulatory support
Yasser SHARIFI, Ali Akbar MAGHSOUDI
《结构与土木工程前沿(英文)》 2014年 第8卷 第1期 页码 46-56 doi: 10.1007/s11709-014-0237-y
关键词: high-strength concrete (HSC) members flexural behavior reinforced concrete experimental results ultimate moment
Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 131-143 doi: 10.1007/s11709-021-0787-8
关键词: RC beams flexural strengthening CFRP CNTs finite element
《结构与土木工程前沿(英文)》 2022年 第16卷 第2期 页码 191-201 doi: 10.1007/s11709-021-0792-y
关键词: cement fineness interfacial transition zone compressive and flexural strength
Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG
《结构与土木工程前沿(英文)》 2019年 第13卷 第5期 页码 1271-1287 doi: 10.1007/s11709-019-0556-0
关键词: engineered cementitious composite (ECC) durability ECC/RC composite beam permanent formwork flexural performance theoretical method
Progressive failure analysis of notched composite plate by utilizing macro mechanics approach
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 623-642 doi: 10.1007/s11709-021-0726-8
关键词: progressive failure notched composite plate Hashin failure criterion macro mechanics approach finite element method
Experimental flexural behavior of SMA-FRP reinforced concrete beam
Adeel ZAFAR, Bassem ANDRAWES
《结构与土木工程前沿(英文)》 2013年 第7卷 第4期 页码 341-355 doi: 10.1007/s11709-013-0221-y
关键词: re-centering shape memory alloys concrete composite fiber reinforced polymer scanning electron microscopy
Flexural-torsional buckling behavior of aluminum alloy beams
Xiaonong GUO,Zhe XIONG,Zuyan SHEN
《结构与土木工程前沿(英文)》 2015年 第9卷 第2期 页码 163-175 doi: 10.1007/s11709-014-0272-8
关键词: flexural-torsional buckling aluminum alloy beams (AAB) finite element method (FEM) theoretical formula
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 704-721 doi: 10.1007/s11709-023-0941-6
关键词: precast steel–UHPC composite beam flexural performance longitudinal shear performance parametric study transverse reinforcement ratio
《结构与土木工程前沿(英文)》 页码 1033-1046 doi: 10.1007/s11709-023-0973-y
关键词: shield tunnel bearing capacity failure mechanism segment reinforcement
标题 作者 时间 类型 操作
Uncertainty of concrete strength in shear and flexural behavior of beams using lattice modeling
期刊论文
Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural,shear or axial failure modes
Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH
期刊论文
Hybrid flexural components: Testing pre-stressed steel and GFRP bars together as reinforcement for flexural
Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA
期刊论文
Analysis of stiffness and flexural strength of a reinforced concrete beam using an invented reinforcement
Nazim Abdul NARIMAN, Martin HUSEK, Ilham Ibrahim MOHAMMAD, Kaywan Othman AHMED, Diyako DILSHAD, Ibrahim KHIDR
期刊论文
Effect of size on biaxial flexural strength for cement-based materials by using a triangular plate method
Hakan T TURKER
期刊论文
An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete
Yasser SHARIFI, Ali Akbar MAGHSOUDI
期刊论文
Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with
期刊论文
The ITZ microstructure, thickness, porosity and its relation with compressive and flexural strength of
期刊论文
Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork
Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG
期刊论文
Experimental flexural behavior of SMA-FRP reinforced concrete beam
Adeel ZAFAR, Bassem ANDRAWES
期刊论文
Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete
期刊论文