【摘要】 “上界地震力理论”的研究既有理论意义,又有实用价值。主、次上界与主、次设计振型相应,零解与无贡献振型相应,设计振型和无贡献振型共同构成完整的正交函数序列,这是基本理论架构。在刚度分布不明和刚度分布给定情况下,上界解可从不同角度供校核之用,实用性是明显的。更多还原

【Abstract】 The Theory of Upper Bound Seismic Forces on Structures is exceptional significant to both theory and practice. The principal and secondary design modes to be associated with the principal and secondary upper bounds together with the non - contribution modes to be associated with the zero solutions constitute a complete set of orthogonal function series. That is the essential idea of the theory. Also, the upper bound solutions can be used for checking seismic internal forces of structures from different approaches under unknown and known rigidity distribution. It is shown that the theory is very powerful in engineering application.更多还原