| 基于UPFs的珊瑚岛礁场地地震反应分析方法研究 |
| |
| 引用本文： | 朱圣华,尹训强,王桂萱.基于UPFs的珊瑚岛礁场地地震反应分析方法研究[J].西北地震学报,2022,44(1):108-118. |
| |
| 作者姓名： | 朱圣华 尹训强 王桂萱 |
| |
| 作者单位： | 大连大学建筑工程学院 |
| |
| 基金项目： | 国家自然科学基金项目(U1839202);辽宁省“兴辽英才计划”项目(XLYC1807219)。 |
| |
| 摘 要： | 合理且高效地模拟珊瑚砂非线性动力特性、远场无限地基辐射阻尼以及海域岛礁动水压力的影响是进行珊瑚岛礁抗震安全分析的关键技术问题.以通用有限元软件ANSYS为研究工具,基于UPFs二次开发灵活性的特点,建立了适用于珊瑚砂地基条件下的岛礁场地地震反应分析时域计算模型.通过创建一种新的珊瑚砂等价线性单元描述岛礁场地的非线性动力...
|
| 关 键 词： | 珊瑚岛礁 UPFs 等价线性单元 地震反应分析 |
A method for seismic response analysis ofcoral island sites based on UPFS |
| |
| ZHU Shenghu,YIN Xunqiang,WANG Guixuan.A method for seismic response analysis ofcoral island sites based on UPFS[J].Northwestern Seismological Journal,2022,44(1):108-118. |
| |
| Authors: | ZHU Shenghu YIN Xunqiang WANG Guixuan |
| |
| Institution: | (College of Architectural Engineering, Dalian University, Dalian 116622, Liaoning, China) |
| |
| Abstract: | The key technical problem for seismic safety analysis of coral islands is to reasonably and efficiently simulate the nonlinear dynamic characteristics of coral sand,the radiation damping of far-field infinite foundation,and the influence of hydrodynamic pressure of sea islands.Based on the characteristics of UPFs,a time-domain calculation model for analyzing the seismic response of island sites with coral sand foundation was established by using the general finite element software ANSYS.A new equivalent linear element of coral sand was created to describe the nonlinear dynamic characteristics of coral island sites,and a viscous artificial boundary element was derived and developed.Based on Westergaard's added mass formula,the hydrodynamic pressure of the channel was simulated with mass21 element,and the FORTRAN interface program was established to realize the free-field response.Furthermore,the rationality and effectiveness of the proposed model were verified by the free-field analysis of a typical coral island site.Finally,an actual coral island site in China was taken as an example,and the nonlinear seismic response of coral island sites was discussed from the aspects of surface peak acceleration and response spectrum.Thus,the dynamic response analysis of various complex island sites can be carried out by using the large-scale solution and analysis ability of ANSYS. |
| |
| Keywords: | coral island UPFs equivalent linear element seismic response analysis |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《西北地震学报》浏览原始摘要信息 |
| 点击此处可从《西北地震学报》下载免费的PDF全文 |
|
