论文部分内容阅读
本文提出和推荐一种考虑地基非线性振动特性的基础振功理论和计算方法。目前,这方面研究,国内很少见。国内现在通用的理论和方法(包括现行规范)仍以线性的简谐振动理论为基础。后者误差较大且不安全。本文内容可以改善现存理论和方法的缺欠;提高计算的可靠性和精度,保证基础振动设计的安全。在计算方法中,本文推荐的是作图法和查表法,这可大大减少基础振动计算工作量。最后,本文还简述了从实测的振动曲线确定地基非线性振动的弹性特徵的方法,这对进一步研究地基非线性振动理论具有一定作用。
This paper proposes and recommends a fundamental vibration theory and calculation method that considers the nonlinear vibration characteristics of ground. At present, research in this area is rare in China. The current domestic theory and methods (including current norms) are still based on linear harmonic vibration theory. The latter error is large and insecure. The content of this article can improve the deficiencies of existing theories and methods; improve the reliability and accuracy of calculations and ensure the safety of basic vibration design. In the calculation method, the drawing method and table look-up method are recommended in this paper, which can greatly reduce the basic vibration calculation workload. Finally, this article also briefly describes the method of determining the elastic characteristics of ground nonlinear vibration from the measured vibration curves, which has a certain role in the further study of ground-based nonlinear vibration theory.