Shear and Torsion Response of Reinforced Concrete Structures
钢筋混凝土结构的剪切和扭转响应
基本信息
- 批准号:RGPIN-2017-06613
- 负责人:
- 金额:$ 3.72万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2019
- 资助国家:加拿大
- 起止时间:2019-01-01 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The objectives of this long-term research program are to improve understanding of the mechanisms by which cracked reinforced concrete transmits shear stresses and use this understanding to develop analytical tools which structural engineers can use to design new structures and evaluate the safety of existing concrete structures. Shear failures can cause concrete structures to collapse without warning and, hence, are of critical concern for public safety. It is now known that older North American shear and torsion design procedures used for a significant portion of existing concrete infrastructure can result in buildings, bridges, silos and nuclear power plants which may have inadequate margins of safety against such failures. Such structures are particularly prone to collapse during earthquakes.***One of the major objectives of the next five years is to improve the understanding of combined torsion and shear and develop the tools to decide which structures must be repaired. This will be done by conducting experiments on intensely instrumented elements of reinforced concrete subjected to loading that simulate the actual conditions encountered in practice. Recently developed techniques will be improved to enable the formation, propagation and sliding of critical cracks to be recorded so that the characteristics of crack patterns of impending shear collapse can be accurately defined. The influence of reversed cyclic loading on crack propagation and bond deterioration for members containing reinforcement details representative of those in older existing structures will be studied and the effects of restraint of shrinkage and thermal movement will be simulated. The experimental studies will be supplemented with extensive nonlinear 2D and 3D finite element analysis. Finally, simple analytical models suitable for use by practicing engineers to evaluate existing structures for shear safety will be developed. The research will be conducted by graduate students who will develop a deep understanding of the shear behaviour of reinforced concrete structures under extreme loads. After such research they will be equipped to contribute to the safety assessment of Canada's critical concrete infrastructure.
该长期研究计划的目标是提高对破裂的钢筋混凝土传播剪切应力的机制的理解,并利用这种理解来开发结构工程师可以用来设计新结构并评估现有混凝土结构的安全性的分析工具。剪切故障会导致混凝土结构在没有警告的情况下崩溃,因此对公共安全至关重要。现在已经知道,用于大部分现有混凝土基础设施的北美旧剪切和扭转设计程序可能会导致建筑物,桥梁,孤岛和核电站,这些建筑物,桥梁,孤岛和核电站可能不足以抵抗此类故障。这种结构在地震期间特别容易崩溃。这将通过对经过载荷的强化混凝土元素进行实验来完成,以模拟实践中遇到的实际条件。最近开发的技术将得到改进,以使临界裂纹的形成,传播和滑动能够记录,以便可以准确地定义即将剪切剪切的裂纹模式的特征。将研究代表代表较旧现有结构的增强细节的成员的裂纹载荷对裂纹传播和键劣化的影响,并将模拟收缩和热运动的限制的影响。实验研究将补充广泛的非线性2D和3D有限元分析。最后,将开发适合练习工程师评估现有结构以进行剪切安全的简单分析模型。这项研究将由研究生进行,他们将对极端负荷下的钢筋混凝土结构的剪切行为有深刻的了解。经过此类研究,他们将有能力为加拿大关键混凝土基础设施的安全评估做出贡献。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Collins, Michael其他文献
Ship detection performance using simulated dual-polarization RADARSAT constellation mission data
- DOI:
10.1080/01431161.2015.1019017 - 发表时间:
2015-01-01 - 期刊:
- 影响因子:3.4
- 作者:
Atteia, Ghada;Collins, Michael - 通讯作者:
Collins, Michael
Evaluating Targeted Therapeutic Response With Predictive Blood-Based Biomarkers in Patients With Chronic Mild Traumatic Brain Injury.
- DOI:
10.1089/neur.2023.0003 - 发表时间:
2023 - 期刊:
- 影响因子:2.4
- 作者:
Eagle, Shawn R.;Puccio, Ava M.;Agoston, Denes V.;Soose, Ryan;Mancinelli, Michael;Nwafo, Rachel;McIntyre, Peyton;Agnone, Allison;Tollefson, Savannah;Collins, Michael;Kontos, Anthony P.;Schneider, Walter;Okonkwo, David O. - 通讯作者:
Okonkwo, David O.
High-Fidelity Ion State Detection Using Trap-Integrated Avalanche Photodiodes
- DOI:
10.1103/physrevlett.129.100502 - 发表时间:
2022-09-02 - 期刊:
- 影响因子:8.6
- 作者:
Reens, David;Collins, Michael;McConnell, Robert - 通讯作者:
McConnell, Robert
The association between conjunctival and scleral thickness and ocular surface ultraviolet autofluorescence.
结膜和巩膜厚度与眼表紫外线自发荧光之间的关联。
- DOI:
10.1038/s41598-023-35062-2 - 发表时间:
2023-05-16 - 期刊:
- 影响因子:4.6
- 作者:
Rajasingam, Pryntha;Shaw, Alyra;Davis, Brett;Alonso-Caneiro, David;Hamwood, Jared;Collins, Michael - 通讯作者:
Collins, Michael
Concussion
- DOI:
10.7326/0003-4819-160-3-201402040-01002 - 发表时间:
2014-02-04 - 期刊:
- 影响因子:39.2
- 作者:
Master, Christina L.;Balcer, Laura;Collins, Michael - 通讯作者:
Collins, Michael
Collins, Michael的其他文献
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{{ truncateString('Collins, Michael', 18)}}的其他基金
Modelling Sea Surface Wind Vectors with Coherent Dual Polarization Synthetic Aperture Radar
使用相干双偏振合成孔径雷达模拟海面风矢量
- 批准号:
RGPIN-2018-04221 - 财政年份:2022
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Advanced Solar Domestic Water Heating Systems
先进的太阳能生活热水系统
- 批准号:
RGPIN-2019-04065 - 财政年份:2022
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Modelling Sea Surface Wind Vectors with Coherent Dual Polarization Synthetic Aperture Radar
使用相干双偏振合成孔径雷达模拟海面风矢量
- 批准号:
RGPIN-2018-04221 - 财政年份:2021
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Advanced Solar Domestic Water Heating Systems
先进的太阳能生活热水系统
- 批准号:
RGPIN-2019-04065 - 财政年份:2021
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Modelling Sea Surface Wind Vectors with Coherent Dual Polarization Synthetic Aperture Radar
使用相干双偏振合成孔径雷达模拟海面风矢量
- 批准号:
RGPIN-2018-04221 - 财政年份:2020
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Advanced Solar Domestic Water Heating Systems
先进的太阳能生活热水系统
- 批准号:
RGPIN-2019-04065 - 财政年份:2020
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Advanced Solar Domestic Water Heating Systems
先进的太阳能生活热水系统
- 批准号:
RGPIN-2019-04065 - 财政年份:2019
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Modelling Sea Surface Wind Vectors with Coherent Dual Polarization Synthetic Aperture Radar
使用相干双偏振合成孔径雷达模拟海面风矢量
- 批准号:
RGPIN-2018-04221 - 财政年份:2019
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Development of Solar Assisted Heat Pump Water Heating Systems
太阳能辅助热泵热水系统的开发
- 批准号:
RGPIN-2014-04295 - 财政年份:2018
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
Modelling Sea Surface Wind Vectors with Coherent Dual Polarization Synthetic Aperture Radar
使用相干双偏振合成孔径雷达模拟海面风矢量
- 批准号:
RGPIN-2018-04221 - 财政年份:2018
- 资助金额:
$ 3.72万 - 项目类别:
Discovery Grants Program - Individual
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