1) transformed-section method
换算截面法
1.
In the paper,base on transformed-section method,adopting variational principle,it deducing shear lag coefficient formulation of simply supported prestressed concrete box girder under uniform load and simply supported reinforced concrete box girder under concentrated load,concrete cracking is considered in shear lag effect,and compared with experimental result and design code.
变分原理通常应用于箱形截面梁剪力滞效应弹性分析,本文基于换算截面法,运用变分原理推导了预应力混凝土简支箱梁均布荷载作用、钢筋混凝土简支箱梁集中荷载作用的剪力滞系数计算公式,考虑了混凝土开裂对箱梁剪力滞效应的影响,并与试验结果和规范方法进行了对比分析。
2) transformed section method
换算截面法
1.
In this paper,formulas are deduced to calculate time-dependence deformation based on transformed section method,and an analytical procedure is given forecast the shrinkage and creep deformation,it considering such factors as concrete strength,stress,reinforcement ratios,concrete cracking,shrinkage and creep.
按换算截面法推导了CFRP加固混凝土梁时效变形计算公式,在此基础上编制了预测收缩、徐变变形的分析计算程序,考虑了混凝土强度等级、加载应力、配筋率的变化、混凝土开裂、混凝土收缩徐变等因素的影响,与其它计算方法比较表明,该方法能较精确预测CFRP加固混凝土梁的时效变形。
3) transformed section approach
换算截面法
1.
Based on the existing test results,a theoretical expression of equivalent stiffness was put forward by using transformed section approach.
在以往试验研究的基础上,采用换算截面法计算加固梁的等效刚度,推导出加固梁正常使用阶段在集中荷载作用下跨中挠度的计算公式,并通过46根加固梁的80组试验数据对其验证,吻合良好,结果可为实际工程加固设计提供参考,同时也为进一步研究加固梁的力学性能建立理论基础。
4) modified transformed-section method
修正换算截面法
5) creep transformed-section method
徐变换算截面法
1.
Formulas are deduced to calculate creep and shrinkage stresses of reinforced concrete beams based on creep transformed-section method,and creep coefficients of plain concrete are obtained according to two years test on concrete columns.
基于徐变换算截面法推导了钢筋混凝土梁徐变收缩引起的截面应力计算公式,根据混凝土柱体2年试验观测,得到了素混凝土的徐变系数。
2.
Based on 1001 days experiment of the external concrete box girder prestressed with CFRP tendons,the law of section stress redistribution caused by creep and shrinkage effects is analyzed with the creep transformed-section method.
以体外配置CFRP筋预应力混凝土箱梁1 001 d的长期受力性能试验为基础,采用徐变换算截面法对收缩徐变效应引起的截面应力重分布规律进行分析。
3.
To do that, 1006 days\' long-term behavior test is carried out, and concrete shrinkage, creep and uneven settlement of elastic supports are considered by means of creep transformed-section method.
以钢筋混凝土连续箱梁1006d的长期受力性能试验为基础,考虑混凝土收缩徐变和弹性支座不均匀沉降影响,采用徐变换算截面法分析了连续箱梁的结构内力重分布、截面应变应力重分布和长期挠曲变形,并与实测结果进行对比分析。
6) transformed section
换算截面
1.
Equations and relative analytical procedure were developed to predict short and long-term deflection of cracked concrete beams strengthened with FRP laminates based on transformed section method.
按换算截面法推导了FRP片材加固混凝土梁的短期与长期挠曲变形计算公式,在此基础上编制了相应的分析计算程序,该分析方法能较准确预测开裂混凝土梁的长期挠曲变形。
补充资料：换算因数法
分子式：
CAS号：
性质：在发射光谱定量分析持久曲线法中，校准曲线与待测试样摄谱如果不在同一块感光板上，需用一个换算因数的方法进行校正。原因是感光板不同，乳剂薄厚、颗粒大小、均匀程度均有差异，引起曝光量与黑度间有一定误差，会造成分析结果不正确。
CAS号：
性质：在发射光谱定量分析持久曲线法中，校准曲线与待测试样摄谱如果不在同一块感光板上，需用一个换算因数的方法进行校正。原因是感光板不同，乳剂薄厚、颗粒大小、均匀程度均有差异，引起曝光量与黑度间有一定误差，会造成分析结果不正确。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条