箱形梁

At the same time,this paper conclude that the deviation limit standard of each testing project for the box double-bridge crane,and present the new method that processing crane main girder deflection of the box double-bridge crane by straining wire rope,the new method that preventing and eliminating the box double-bridge crane running defect by wheel track circular measure.

总结出：箱形双梁桥式起重机运行缺陷各检测项目的极限偏差标准。获得了：处理箱形双梁桥式起重机主梁挠度的新方法—拉钢丝绳法；预防和消除箱形双梁桥式起重机运行缺陷的新方法—圆弧轮、轨法。

This design proposal is the prestressed reinforcement concrete conatant cross-section box shape continuous bridge, Main span disposal is 45+45+45m, the bridge floor width is 28m, the king post uses is the single box single room.

本设计方案为预应力钢筋混凝土等截面箱形连续梁桥，主桥布置为45+45+45m，梁桥面宽28m，采用单箱单室梁。

The curve continual steel box Liang shearing force stagnates the effect finite element analysis box section Liang has the big flexural rigidity and torsional stiffness, the stress performance good, spanning ability big, on the bridge the field of vision open and so on the merits, is in the bridge design the commonly used structural style, when receives under the dead load or the symmetrical live load function winding, because the lifting surface detrusion causes its bending stress to present the non-uniform distribution condition along the Liang width direction, this phenomenon is called "the shearing force to stagnate the effect".

曲线连续钢箱梁剪力滞效应的有限元分析箱形截面梁具有较大的抗弯刚度和抗扭刚度、受力性能好、跨越能力大、桥上视野开阔等优点，是桥梁设计中常用的结构形式，在受恒载或对称活荷载作用下挠曲时，由于翼板的剪切变形致使其弯曲应力沿梁宽度方向呈现不均匀分布状态，此现象称为&剪力滞效应&。

Based on the analysis results, a simplified design calculation method of steel box girder subjected to eccentric load is proposed.

在此基础上，提出了偏心荷载作用下钢板箱形梁的简化设计计算方法。

First, the Delphi 7. 0 is used to develop the optimum design software for the box girder.

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。

The cold-formed sheet is a groove-shaped structure that is composed of a crown plate and reinforced ribs connected with ends of the crown plate; the box beam is a box-shaped structure comprising an upper wing edge, a lower wing edge and two side webs that are connected in every two components.

由压型钢板、纤维增强塑料箱梁组成，压型钢板为由顶板和顶板端部的加强肋相连组成的槽形结构，箱梁为由上翼缘、下翼缘和两侧腹板两两相连组成的箱形结构，其结构如图所示。

The box beam external dimensions are big , are away from the ground to be high , carries on the dog-legged single shade beam crack detection from the opposite side , the focal distance is long , and is not easy to operate.

箱形梁外形尺寸较大，距离地面较高，从对侧进行双壁单影射线探伤，焦距偏长且不易操作。

This machine is used for the milling process of the H-barand box beam, the ma-ximum piece end which can mill is 1500×1500mm, and takes the advantage of con-venience, simplicity, rapid-adjusting.

本机用于焊接或轧制成型的H型钢及箱形梁两端面铣削加工，能铣削的最大工件端为1500×1500mm，具有操作方便、结构简单、调整迅速等优点。

The design of the sideway track box plate girder of the double beam shop traveller is described.

本文介绍20吨葫芦双桥梁式起重机及其偏轨箱形梁的设计计算。

The force transmission, due to the crane trolley wheel pressure, from rail to bias-rail box girder belongs to the nonlinear contact. There is a coupling relationship between the deformation of contact area and the stress distribution.

小车轮压作用下，轨道与偏轨箱形梁之间力的传递属于接触非线性问题，接触面间的变形和应力分布存在相互耦合的关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。