特大型高架渡槽托举效率对比研究

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英文篇名：Comparative study on lifting efficiency of super-large aqueduct 中文刊名：水利水电技术 英文刊名：Water Resources and Hydropower Engineering 作者：林长照 ; 张晶晶 ; 黄达海 英文作者：LIN Changzhao ; ZHANG Jingjing ; HUANG Dahai ; School of Transportation Science and Engineering ; Beijing University of Aeronautics and Astronautics ; College of Civil Engineering and Architecture ; China Three Gorges University 中文关键词：大型渡槽 ; 截面选型 ; 托举效率 英文关键词：large aqueduct ; section selection ; lifting efficiency 出版日期：2015-01-20 机构：北京航空航天大学交通科学与工程学院;三峡大学水利与环境学院; 年：2015 期：01 出版单位：水利水电技术

摘要

在强震地区,特大型高架渡槽结构设计的主要困难是其抗震减震性能设计。本文首次提出渡槽槽身托举效率的概念,并且用托举效率来衡量大型渡槽槽身的抗震减震性能,即利用ANSYS软件,在保证过水面积相等、结构应力和挠度大致相同的前提下,比较了不同材料、不同截面形式、不同跨度下的渡槽槽身托举效率。有限元分析结果表明40 m跨预应力混凝土两槽独立式U型渡槽为最优方案。
In meizoseismal areas,the main difficulty for the structural design of the super-large aqueduct is the seismic design of its seismic reduction performance. The concept of the lifting efficiency of aqueduct is initially proposed herein,furthermore,the seismic performance of the body of large aqueduct is judged with the lifting efficiency; i. e. under the premise of that the guaranteed discharge areas are same,while the structural stress and deflection are roughly same,the lifting efficiencies of the aqueduct body under the conditions of various materials,various section types and various spans are compared with ANSYS software. The result from the finite element analysis shows that the optimal scheme is the independent pre-stressed concrete dual-trough and Ushaped aqueduct with the span of 40 m.

引文

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