塔背回填混凝土对进水塔地震响应的影响分析

英文篇名：Analysis of Impacts on Earthquake Response of Intake Tower by Backfill Concrete on Tower Back
中文刊名：西北水电
英文刊名：Northwest Hydropower
作者：李锋
英文作者：LI Feng ; POWERCHINA Xibei Engineering Corporation Limited
中文关键词：进水塔 ; 回填混凝土 ; 有限元 ; 静动力分析 ; 地震响应
英文关键词：intake power ; backfill concrete ; finite element ; static and dynamic analysis ; earthquake response
出版日期：2015-02-28
机构：中国电建集团西北勘测设计研究院有限公司;
年：2015
期：01
出版单位：西北水电

摘要

塔背回填混凝土将岸塔式进水塔和山岩连成一体,提高了进水塔整体刚度,有效改善了塔体在地震情况下的拉应力幅值,对进水塔结构的抗震设计非常关键。以某水电站的岸塔式进水塔为例,针对不同高度塔背回填混凝土的塔体模型进行三维有限元静动力计算,以分析回填混凝土对进水塔地震响应的影响。
The backfill concrete on the tower back integrates the intake tower and the mountain rockmass,increasing the overall rigidity of the intake tower and effectively improving the tensile stress range value of the tower body in earthquake condition. This is very important for the aseismic design of the intake tower structure. With the case of the intake tower of one hydropower station,the static and dynamic calculations in 3D finite element method are performed to the tower models with the backfill concrete on the tower back at different heights so as to analyze the impacts on the earthquake response of the intake tower by the backfill concrete on the tower back.

引文

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