摘要
将行波法应用到刚度较大、分段较多的水下沉管隧道的地震分析中，提出把轴向、横向两个输入波处理为两个独立的行波的方法．行波法是否符合实际，与输入地震波的有关参数及地基系数选取有很大关系，作者对此进行了比较深入的讨论，使输入参数的选取简单、明确，便于对计算结果进行分析与判断．最后应用此法对珠江水下隧道的工程实例进行了计算．
This paper deals with seismic analysis of an immersed tunnel using the travelling wavemethod. The objective of the analysis is to obtain the maximum stresses in the tunnel body andthe relative displacements at the joints for design purpose. In analysis, the axial and transverse input waves are treated as two independent waves with different amplitudes and periods. Themethod has been found to have the advantages of simplicity and dearness in physical concepts.However, reasonableness of the prediction by the method depends largely on the input data, suchas the wave amplitude, the wave length, the propergstion speed of the travelling wave as well asthe reaction coefficient of the ground. Thus, determination of the input data is discussed in detail. Finally, the method is applied to analysis of Huangsha-Fangcun immersed tunnel across thePearl River in Guangzhou.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第11期122-130,共9页
Journal of South China University of Technology(Natural Science Edition)
基金
广州珠江隧道实业有限公司资助
