大型复杂结构非线性随机地震反应分析与倒塌全过程模拟

Nonlinear stochastic seismic response analysis and overall process of collapse of large complex engineering structures

工程结构在强地震动作用下的非线性随机反应与倒塌全过程模拟,是合理进行复杂结构抗震可靠性设计的基础。近年来在随机地震动物理模型、工程材料多维本构关系与结构的非线性分析理论、复杂结构非线性随机动力学等方面取得的重要进展,使得大型复杂结构的非线性随机地震反应分析与倒塌全过程模拟成为可能。本文概略介绍了上述研究进展,指出了需要进一步深入研究的问题。

The nonlinear stochastic response analysis and simulation of the overall process of collapse of engineering structures subjected to strong earthquakes are the foundation of rational reliability-based design of large complex structures. In recent years, great progress has been made in the simulation of seismic ground motion, multi-dimensional constitutive laws of engineering materials, nonlinear analysis theory for large complex structures and nonlinear stochastic dynamics. This makes it feasible to implement the stochastic response analysis and the overall process of collapse simulation of large complex structures. In the present paper the major progress is outlined. Problems to be further studied in the future are discussed.