长江科学院院报 ›› 2012, Vol. 29 ›› Issue (9): 86-90.DOI: 10.3969/j.issn.1001-5485.2012.09.020

• 水工结构与材料 • 上一篇    下一篇

预应力钢衬钢筋混凝土坝后背管非线性分析

马文亮，王清云，张建华   

  1. 华北水利水电学院 土木与交通学院， 郑州450011
  • 收稿日期:2012-03-28 修回日期:2012-06-26 出版日期:2012-09-01 发布日期:2012-09-13
  • 作者简介:马文亮（1979-），男，黑龙江宾县人，讲师，硕士，主要从事工程结构的计算与分析工作
  • 基金资助:

    河南省教育厅自然科学基础研究计划项目（2010B560009）

Nonlinear Analysis of Prestressed Steel-lined Reinforced Concrete-Penstock on Downstream Surface of Dam

MA Wen-liang, WANG Qing-yun, ZHANG Jian-hua   

  1. School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou   450011, China
  • Received:2012-03-28 Revised:2012-06-26 Online:2012-09-01 Published:2012-09-13

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摘要： 以龙开口水电站为例，提出了预应力钢衬钢筋混凝土坝后背管结构的设计方案，并采用非线性有限元理论对背管结构进行了极限承载力分析。研究了坝后背管结构的应力分布规律，并将预应力钢衬钢筋混凝土坝后背管与普通钢衬钢筋混凝土坝后背管进行对比分析。研究成果表明：预应力钢衬钢筋混凝土坝后背管结构具有节省投资、避免开裂、耐久性好等优点，是一种值得广泛应用和推广的压力管道结构形式。

关键词: 预应力钢衬钢筋混凝土, 坝后背管, 非线性理论, 内水压力, 应力分布

Abstract: A design scheme of prestressed steel-lined reinforced concrete (RC) penstock laid on the downstream surface of dam is proposed, and the ultimate bearing capacity of the penstock is analyzed through nonlinear finite element theory. Longkaikou hydropower station is taken as a case study. The law of stress distribution of the penstock structure on the downstream surface of the dam is discussed. Prestressed steel-lined RC penstock is compared with common steel-lined RC penstock in terms of stress, concrete consumption, and steel consumption. Results show that prestressed steel-lined RC penstock on the downstream surface could save investment, avoid cracking, and is of good durability, thus is worth of wide application and promotion.

Key words: prestressed steel-lined RC, penstock on downstream surface of dam, nonlinear theory, internal water pressure, stress distribution

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