城市地下管网地震灾害情景可视化方法研究  

Research on visualization method of seismic disaster scenarios in urban underground pipelines

作　　者：孙思男 郭恩栋[1] 吴厚礼 顾嘉宁 SUN Sinan;GUO Endong;WU Houli;GU Jianing(Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所,中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080

出　　处：《自然灾害学报》2021年第4期102-109,共8页Journal of Natural Disasters

基　　金：国家重点研发专项(2019YFC1509301);大中城市地震灾害情景构建重点专项资助项目(2016QJGJ11)。

摘　　要：地震灾害情景构建研究对直观展示整个地下管网的灾害情景和薄弱环节具现实意义,是防灾减灾工作的重要组成部分。为了提升大中城市地下管网地震灾害情景的三维可视化效果,研究了基于VTK函数库和Python语言利用地下管网空间位置数据及管线表面的TIN表达算法,实现了外部数据转换、城市大规模三维管网模型建立及地震反应动态可视化。并运用该方法开展了广东省某城市地下管网的震害仿真模拟,展示了该研究方法的可视化效果,对城市地下管网的抗震薄弱环节判断、地震破坏状态和抗震性能评估等工作均具参考价值。The research on the construction of seismic disaster scenarios is of practical significance to visually display the disaster scenarios and weak links of the whole underground pipeline network,and is an important part of disaster prevention and mitigation.In order to improve the 3D visualization effect of seismic disaster scenario of underground pipe network in large and medium-sized cities,the research is based on the VTK function library and Python,using the data of the underground pipeline network space position and the TIN expression algorithm of the pipeline surface.The conversion of external data,the establishment of large-scale three-dimensional pipe network model and the dynamic visualization of seismic response are realized.The method is used to simulate the seismic damage of underground pipeline network in a city of Guangdong Province,it can be seen that the visualization effect of the research method is helpful to judge the weak link,damage state and seismic performance evaluation of the urban underground pipeline network.

关 键 词：管网建模 震害预测 VTK 三维可视化 地震灾害情景模拟 

分 类 号：TU991[建筑科学—市政工程] TU984.11