An alternative approach for the prediction of the behaviour and resistance of structural elements.

拟议的研究计划涉及钢截面和构件的性能、抗力和设计。作为对（i）改进的、更快的、更简单的和基于机械的设计方法和（ii）先进的设计工具（软件）的基本需求的响应，主要目标包括开发一种创新的替代方法，即总体交互概念（O.I.C.）。国际犯罪组织。已成为最合适的方法，提供了一个健全的理论框架，结构元素的当前和未来的材料。它的目的是（i）改进实际设计实践，（ii）提高准确性，（iii）提高简单性和一致性，以及（iv）为计算机辅助阻力预测提供一个合理的框架。从中长期来看，这种方法将取代所有的设计标准，不仅在加拿大，而且在世界范围内。 在这方面，申请人在2012年发起了一个专门的国际研究财团，称为S.T.S.S.，包括学术界和工业界的合作伙伴。已经取得了重大进展，特别是在空心截面构件的设计方面，其中O.I.C.显示出优异的结果。因此，本文详述的研究工作在逻辑上适合于连续和一致的发展，并且是相对于（i）开口截面构件（热轧或焊接，标准钢种和高强度钢），（ii）具有非线性应力-应变响应的材料，当前的力学模型不适用于该材料，以及（iii）剪切应力对阻力的影响，通过O.I.C. approach. 对截面和构件的几个试验系列以及广泛的非线性壳体有限元分析都是可以预见的。仿真。因此，对高素质人员的广泛培训至关重要，并将在S.T.S.S.下在国际范围内进行。伞拟议的研究还应受益于主要研究者广泛的国际经验和合作，以及在若干专家技术和规范委员会中的承诺。 从长远来看，O.I.C.的设计方法将对科学发展、标准演变和日常设计实践产生重大影响。

The proposed research program addresses the behavior, resistance and design of steel sections and members. As a response to a fundamental need for (i) improved, quicker, simpler and mechanically-based design approaches and (ii) advanced design tools (software), the main objective consists in developing an innovative, alternative approach, the Overall Interaction Concept (O.I.C.). The O.I.C. has emerged as the most appropriate approach, offering a sound theoretical framework to structural elements made of current and future materials. It was though and built to (i) improve actual design practice, (ii) increase accuracy, (iii) advance simplicity and consistency, and (iv) provide a sound framework for computer-assisted resistance predictions. In the middle to long term, this approach shall supersede all design standards, not only in Canada but also worldwide. In this respect, the applicant has initiated in 2012 a dedicated international research consortium called S.T.S.S., involving both academic and industrial partners. Significant advances have already been achieved, in particular with respect to the design of hollow section members, where the O.I.C. was shown to yield excellent results. The research works detailed herein therefore logically fit into continuous and consistent developments, and are relative to (i) open section members (hot-rolled or welded, standard steel grades and high strength steels), (ii) materials with a non-linear stress-strain response for which current mechanical models are not appropriate and (iii) the influence of shear stresses on resistance, by means of an O.I.C. approach. Several test series on both sections and members are foreseen, as well as extensive non linear shell F.E. simulations. Consequently, extensive training of highly qualified personnel is of prime importance, and will take place in an international context, under the S.T.S.S. umbrella. The proposed investigations shall also benefit from the principal investigator's wide international experience and collaborations, as well as commitments in several experts technical and normative committees. In the long term, O.I.C.-based design approaches shall significantly impact both scientific developments, standards evolution and daily design practice.