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判断材料或工程结构物的组成体在荷载所产生的应力作用下是否具有足够的强度或抗变形能力,这是强度理论的主要任务.古典的力学强度理论,由于其所依据的是一些简单试验的结果和某些简化的假定,往往使得它们的应用具有某些局限性.现代测试技术的巨大进步,特别是关于材料破坏机理所作的大量试验研究工作,使得人们对材料破坏状态的认识进一步深化,深感过去那些单独考虑变形和应力或应力的组合而建立的强度条件具有太多的不充分性和局限性,于是提出了一些描述破坏的新观点,这些工作丰富和发展了传统的力学强度理论.这些理论的崭新的观点,广阔的探索领域以及良好的实践效果吸引着许多人的兴趣.本文的目的即是从工程应用的角度,对岩石强度理论的新发展作概括性的评述.
It is the main task of the strength theory to determine whether the material or the structure of a project’s structure has enough strength or resistance to deformation under the stress caused by the load. The classical mechanical strength theory, because it is based on a number of simple tests The results and some simplifying assumptions often make their application have some limitations. The great progress of modern testing technology, especially the large amount of experimental research on the material damage mechanism, makes people deepen their understanding of the state of material damage. It is deeply felt that the strength conditions established in the past by considering the combination of deformation and stress or stress alone have too many inadequacies and limitations. Therefore, some new viewpoints describing damage have been proposed. These work have enriched and developed the traditional mechanical strength. Theory. The new perspectives of these theories, broad exploration fields, and good practical effects attract many people’s interests. The purpose of this paper is to give a general review of the new development of rock strength theory from the perspective of engineering application.