在正常使用状态下，预应力平抑了箱梁剪力滞效应。
Shear lag is reduced for prestress in serviceability limit state .
分析桥梁结构剪力滞效应的理论方法有许多不足之处。
Theoretical method of analyzing the effect of shear lag in bridge structures has some deficiency.
箱形梁弯曲时，平截面假定已不能满足要求，产生剪力滞效应。
When box beam is bent, the assumption that the section is plane is not satisfied and the shear lag is produced.
剪力滞效应的分析对于现代桥梁设计的安全性和经济性有较大意义。
The analysis of shear lag has an important significance on safety and economy to the design of modern Bridges.
结合样条函数和里兹法提出薄壁箱形梁剪力滞效应计算的样条里兹法。
The spline Ritz method was proposed and used to analyse the shear lag effect of box girders.
对试验结果的分析表明，随着载荷水平的增加，截面的剪力滞效应逐渐明显。
The results calculated by means of regular formula for calculating the shear lag effect in box girder show that the usual analytical solutions f…
用有限元法和能量变分法对预应力活性粉末混凝土简支箱梁的剪力滞效应进行研究。
The shear-lag effect on the prestressed RPC simply-supported box girder is studied by FEA method and energy variation method.
根据所提出的位移模式，结合虚功原理推导出组合梁剪力滞效应微分方程以及相应的边界条件。
A set of difFerential equations and the corresponding boundary conditions are derived according to virtual work principle and the longitudinal displacement patterns.
试验表明，截面应变沿宽度方向呈非线性分布，剪力滞效应随荷载的增加而变化，并不是常量。
The study demonstrates that the section strain along the width is nonlinearly distributed and that the effect of the shear lag is not constant and changes with the increment of the load.
当框筒结构裙梁跨高比增大到一定程度以后，剪力滞效应就可以忽略，结构的受力性能与框架相近。
The shear lag effect in frame-tube structures can be neglected when the ratio of beams span to height increases to some degree, and its behaviors comes close to the behaviors of frame structures.
由于剪力滞效应及剪切变形的存在，箱梁的弯曲振动频率按照初等梁理论计算往往存在较大的误差。
The vibration frequency of box gird is usually calculated by the elementary beam theory, but it will lead to a large error because of the existence of shear lag effect and shear deformation.
本文通过大型试验的研究，分析梁板结构截面的剪力滞效应，及翼缘板的有效分布宽度，为设计提供参考。
In the paper, spear lag of beam plated construction and effective distribution width of flange plate are analysed through model test and research. It provides a reference in design.
本文方法力学概念明确，是其弹性分析适用范围的拓展，可广泛应用于连续箱梁开裂后的剪力滞效应分析。
The method adopted in this paper is definite in mechanical concept, and it is the extension of elastic analysis, it can be widely used in shear lag effect analysis of cracked continuous box girder.
从现场实测数据计算分析连续梁的剪力滞效应的实际情况，为以后的桥梁设计和现场施工控制提供有价值的资料。
Calculated from the measured data of continuous beams with shear lag effect of the actual situation, for the future bridge design and construction control of the scene to provide valuable information.
在变分法薄壁箱梁剪力滞基本微分方程的基础上，提出一个可考虑集中弯矩影响的分析箱梁剪力滞效应的有限梁单元。
On the basis of the governing differential equations by the variational principles, the finite beam element for analyzing the shear lag effect of box girders is proposed.
基于换算截面法，运用变分原理对开裂混凝土连续箱梁的剪力滞效应进行了分析，并与规范方法和试验结果进行了对比。
Based on transformed section method, shear lag effect of continuous box girder was analyzed adopting variational principle, and compared with design code and experimental result.
本论文主要针对大跨度箱形截面梁结构剪力滞效应和结构非线性抗震性能进行了较深入的理论分析和一定的试验对比研究。
In this dissertation, the shear lag effect for large span box-section beam structure and the structural nonlinear anti-seismic capability have been theoretically and experimentally investigated.
集中力作用处剪力滞效应与其它截面相比明显增大，我国现行桥规（JTJ023-85）中关于有效宽度取全桥等宽的说法需要进一步研究。
The shear lag effect of the section under concentrated load is more remarkable than that of other sections. National Standard (JTJ023-85) is worth discussing further.
人字形桥梁由于采用了薄壁箱梁结构，其约束扭转、畸变效应及剪力滞比较突出。
The adoption of the thin-walled box girder to the Y-shape bridge makes the restrained torsion effect, distortion effect and shear lag effect prominent.
应用作者建立的有限段模型，对简支箱梁进行剪滞效应分析，发现变高度简支梁存在负剪力滞。
Analysis of shear lag effect in thin-walled box girders with one-dinensional dicrete finite element;
应用作者建立的有限段模型，对简支箱梁进行剪滞效应分析，发现变高度简支梁存在负剪力滞。
Analysis of shear lag effect in thin-walled box girders with one-dinensional dicrete finite element;
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