本文提出薄壁箱形梁计算的一种分析解法。
In this paper an analytical method for calculating thin-walled box girders has been proposed.
塔梁固结，主梁采用三跨连续等高度箱形梁。
△以计算机优化设计的箱形梁作为主承载梁。
Use optimized computer design box type girder as main support grider.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast - in - place segmental prestressed concrete box girder.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast-in-place segmental prestressed concrete box girder.
最后采用的方案是分段现浇的预应力混凝土箱形梁。
The successful alternative was the cast - in - place segmental prestressed concrete box girder .
采取适当的工艺措施，可大大减少箱形梁的焊接变形。
Nevertheless if proper welding process measures are taken, the said deformation can be reduced significantly.
本文应用变分法和有限条法分析箱形梁桥的剪滞效应。
In this paper, the shear lag effect in box girder Bridges is analysed by means of variational calculus and finite strip method.
箱形梁是集装箱吊具的重要受力部件，对焊接质量要求高。
The box beam was one of the most important stress parts of the crane which required high quality butt weld.
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.
将单箱单室复合材料箱形梁纯扭转的分析方法拓展到单箱多室。
The approach for pure torsional analysis of thin-walled composite box beams with single-cell was extended to ones with multi-cells.
基于以上原因，本文采用了两种方法对箱形梁桥架进行优化设计。
According to the above reasons, two kinds of methods are adopted to optimize the box-main-girder bridge.
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.
随机载荷作用下的疲劳破坏是起重机焊接箱形梁的主要失效形式之一。
For most of the bridge cranes, the failure of the structures result from the fatigue damage in the welded box beam under the action of random fatigue loads.
上海浦东文献中心主楼钢结构工程为箱形梁斜拉悬挑结构，设计新颖独特。
With box beams and diagonal-tensile suspended structure, the steel structure of the main building of the center is a new and unique design that has thick structural plates and heavy components.
运用试验方法，对铁路混凝土箱形梁的水泥水化、日照温度场及温度效应进行研究。
Experimental research on hydration of cement, sunlight temperature field and temperature effect of railway concrete box girder is studied in this paper.
根据已有的试验和研究成果，总结推荐了桥门式起重机焊接箱形梁的疲劳参数取值。
Based on test data and research achievement available in literature, the fatigue parameters of welded boxes of overhead and gantry cranes are recommended.
剪切变形的影响使得箱形梁的翼板中出现应力不均匀现象，尤其是悬臂箱形梁剪力滞现象。
The influence of shearing deformation causes the non-uniform stress in the wing plate of the box girder, especially the cantilever box girder.
根据断裂力学及可靠性理论，提出了一种起重机焊接箱形梁存在裂纹缺陷的可靠度计算方法。
Based on fracture mechanics and theory of reliability, this paper offers the reliability calculation method for welded box beam having fracture.
本文提出了可以考虑箱形梁弯曲、扭转、畸变多种因素的梁-墩系统横向振动的动力分析模型。
In this paper, the lateral vibration dynamic analysis model of continuous box girder viaduct is presented in which the bending, torsion and distortion of box girder can be considered.
本文结合钱塘江二桥应用变分法推导了变截面箱形梁剪滞效应的微分方程并利用有限差分法求得解答。
On the basis of the variational method, a finite difference solution is presented for shear lag effect in Qiantang River Bridge with box section of varying depth.
本文对上海一座具有悬臂铰节点的多联曲线连续箱形梁桥的可行性方案提出了两种比较实用的分析方法。
In connection with a proposed multiple curved continuous box girder bridge with cantilever hinged joints in Shanghai, two practical and efficient methods of analysis have been developed.
以其解析式作为形函数，利用刚度系数的定义，推导了考虑剪滞影响的箱形梁单元刚度矩阵及等效结点力公式。
Stiffness matrix and equivalent nodal force formula, which take into account of the influence of shear lag, are derived subsequently on the basis of the definition of stiffness coefficient.
为此，本文阐述了大跨度箱形梁的预拱确定方法——逆迭代法，并以深圳会展中心箱形梁为实例说明计算过程。
Therefore, the paper expatiates counter-arched method of long span box beam-iteration, and the process of counter-arched calculation of Shenzhen conference and exhibition center.
曲线箱形梁桥是空间复杂受力的结构体系，预应力效应一方面能提高构件的承载能力，另一方面也可能对结构带来一些不利的影响。
Curved box girder bridge is a complicated spatial structural system. The effect of prestressing may improve the bearing capacity of the members, but may also adversely affect the structure.
为使运输与吊装过程中箱形梁严格保持水平，设计中综合采用了位置同步控制和力跟踪控制算法，实现了4个油缸同步运动且受力平均。
Position synchronization control method combined with force tracing control algorithm was put forward to keep the girder horizontal and supported by 4 cylinders averagely.
通过株洲湘江公路大桥预应力箱形梁梁体加固及裂缝处理工程施工实例，简要介绍桥梁梁体加固及裂缝处理施工技术，可供类似加固工程参考。
By the case study of the Zhuzhou Xiang River Bridge, techniques are introduced to consolidate the prestress trunk beams and repair their cracks for the guidance of construction of the kind.
通过株洲湘江公路大桥预应力箱形梁梁体加固及裂缝处理工程施工实例，简要介绍桥梁梁体加固及裂缝处理施工技术，可供类似加固工程参考。
By the case study of the Zhuzhou Xiang River Bridge, techniques are introduced to consolidate the prestress trunk beams and repair their cracks for the guidance of construction of the kind.
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