+高级检索 English
大型预应力混凝土渡槽结构受力性能试验研究
作者:
作者单位:

(华北水利水电学院土木工程系)

作者简介:

赵顺波

通讯作者:

中图分类号:

TU378

基金项目:


Experimental study on the mechanical performance of large prestressed concrete aqueduct structures
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    本文介绍南水北调中线工程河南段初步设计中提出的跨度为40m,双箱矩形断面大型预应力混凝土渡槽结构的1:5仿真模型试验研究情况,对预应力混凝土渡槽结构仿真模型试验中结构自重的模拟与结构承受水荷载作用前初始应力状态的建立、水荷载施加方法等关键技术问题进行了分析讨论。试验结果表明,采用调整混凝土初始预应力的方法模拟预应力混凝土渡槽结构在结构自重作用的受力状态是可行的,采用单面橡胶和钢结构组成的单腔和多腔加载水囊可以准确地模拟渡槽中水荷载的作用,采用全自动数据采集处理系统是保证大型结构模型试验数据采集同步而精确的必要设备条件,为大型预应力混凝土结构模型试验提供重要成功经验。针对渡槽单箱承受水荷载和双箱承受水荷载时主要构件的性能测试结果,提出各构件的设计方法和结构构造措施以及需要进一步改进的结构设计建议

    Abstract:

    This paper introduces the preliminary design of the Henan section of the South-to-North Water Diversion Project, which proposes the 1:5 simulation model test of the large-scale prestressed concrete ferry structure with a span of 40m and a double-box rectangular section, and analyzes and discusses the key technical problems such as the simulation of the structural self-weight and the establishment of the initial stress state before the structure is subjected to the water load, and the method of applying the water load. The key technical issues such as the method of water load application are analyzed and discussed. The test results show that it is feasible to use the method of adjusting the initial prestress of concrete to simulate the stress state of the prestressed concrete ferry structure under the action of structural self-weight, and that the use of single-cavity and multi-cavity loading bladders composed of single-sided rubber and steel structures can accurately simulate the action of water load in the ferry, and the use of a fully automated data acquisition and processing system is the necessary equipment to ensure that the data acquisition of the large-scale structural model test is synchronized and accurate. The use of fully automatic data acquisition and processing system is necessary to ensure the synchronization and accuracy of data acquisition in large-scale structural model tests, which provides important successful experience for large-scale prestressed concrete structure model tests. With regard to the performance test results of the main components in the single and double tanks, the design methods and structural measures of each component are proposed, as well as the structural design suggestions for further improvement.

    参考文献
    相似文献
    引证文献
引用本文

Zhao Shunbo, Zhang Limei, Li Shuyao, Hu Zhiyuan Experimental study on the mechanical performance of large prestressed concrete aqueduct structures. Prestress Technology 2006,10(02):3-9. 10.59238/j. pt.2006.02.001

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2023-08-10
  • 出版日期: