基于耐震时程法的浅表倒虹吸结构抗震分析  

Seismic Analysis of Shallow Inverted Siphon Structure Based on Endurance Time Analysis

作　　者：胡宏润 张继勋[1] 韩睿 任旭华[1] 宋宸 HU Hong-run;ZHANG Ji-xun;HAN Rui;REN Xu-hua;SONG Chen(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Jinan Water Conservancy Survey Design Research Institute Co.,LTD.,Jinan 250101,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]济南市水利建筑勘测设计研究院有限公司,山东济南250101

出　　处：《水电能源科学》2025年第2期164-167,117,共5页Water Resources and Power

基　　金：云南省重大科技专项计划(202102AF080001)。

摘　　要：倒虹吸作为重要的交叉引水建筑物,在引调水工程中运用广泛,这类工程在地震作用下的安全性是确保整个引调水工程正常运行的关键,因此引起了高度重视。以某倒虹吸工程为例,基于耐震时程法(ETA)建立了结构-地基-内水动力相互作用模型,依据目标反应谱生成三条人工ETA曲线,选取相对位移、峰值应力、损伤体积比及损伤耗散能等作为结构性能指标,进行运行工况和放空工况下的结构抗震分析。研究表明,运用耐震时程法进行建筑物抗震计算分析具有高效、准确的优势;在充水运行工况下倒虹吸管道的动力损伤更为严重,需采取必要的隔振防震措施,研究结果对类似工程抗震分析有一定的参考价值。As an important cross-diversion building,the inverted siphon is widely used in water diversion projects,and the safety of this type of project under seismic action is the key to ensure the normal operation of the whole water version di-project,so it also attracts great attention from the managers.Taking an inverted siphon project as an example,structure-foundation-internal hydrodynamic interaction model was established based on the earthquake time-range method(ETA).Three artificial ETA curves were generated based on the target response spectrum.Relative displacement,peak stress,damage volume ratio and damage dissipation energy were selected as the structural performance indexes for the seismic analysis of the structure under operating and venting conditions.The study shows that the seismic calculation and analysis of buildings using the seismic time-distance method has the advantages of high efficiency and accuracy;The namic dy-damage of the inverted siphon pipeline is more serious under the operation condition of water filling,and it is sary neces-to take the necessary vibration isolation and anti-seismic measures.The results of the study have certain reference value for the seismic analysis of similar projects.

关 键 词：输水工程 浅表倒虹吸 耐震时程法 混凝土损伤 抗震分析 

分 类 号：TV672.5[水利工程—水利水电工程] TV312