预应力型钢混凝土短期刚度试验研究

熊学玉; 黄炜一; 高峰

doi:10.13204/j.gyjz201112007

预应力型钢混凝土短期刚度试验研究

doi: 10.13204/j.gyjz201112007

1.
1. 同济大学建筑工程系,上海200092;
2.
2. 同济大学先进土木工程材料教育部重点实验室,上海200092

基金项目:

国家工程建设行业标准《预应力混凝土结构设计规范》研究项目;上海市科委科技支撑计划(09231201102);国家自然科学基金(E080501);教育部高等学校博士学科点专项科研基金(20090072110051);铁道部重点课题(2010G009-K);科技部创新项目(10C26213100691)

详细信息

作者简介:
第一作者：熊学玉, 男, 1962年出生, 博士, 教授, 博士生导师。E-mail：xueyu@tongji.edu.cn

中图分类号: TU398.9
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- 被引次数: 0
出版历程
- 收稿日期: 2011-07-28
- 刊出日期: 2011-12-20

EXPERIMENTAL STUDY ON SHORT-TERM STIFFNESS OF PRESTRESSED STEEL REINFORCED CONCRETE BEAM

1.
1. Department of Building Engineering,Tongji University,Shanghai 200092,China;
2.
2. Key Laboratory of Advanced Civil Engineering Materials(Tongji University),Ministry of Education,Shanghai 200092,China

摘要

摘要: 通过两榀预应力型钢混凝土框架的静力试验研究表明，预应力型钢混凝土(PSRC)框架梁的平均应变基本符合平截面假定，荷载-挠度曲线可近似为三折线。在试验的基础上，根据预应力型钢混凝土受弯构件的特点，运用刚度叠加法和双直线法，推导了PSRC梁受弯刚度的计算公式。通过理论计算值与试验值的对比分析，采用公式计算的挠度与试验值吻合良好，提出的计算公式有较高的精确度，能对预应力型钢混凝土规范的编制起到一定的参考作用。
- 预应力型钢混凝土 /
- 静力试验 /
- 刚度
Abstract: In order to study the stiffness of PSRC beam, two prestressed steel reinforced concrete frames ware tested.The text results of the average strains of this sort of beam are basically consistent with the hypothesis of plan section, whose load-deflection curves are close to three-section line.Based on the experiment, it is derived the stiffness formula of the PSRC beam by the stiffness stack method.After comparing the calculation results with test results of deflection.It is believed that this formula can accurately calculates the stiffness of PSRC beam and also a reference for the compilation of the PSRC code.
- prestressed steel reinforced concrete /
- static test /
- stiffness