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- irregularly - shaped arch bridge 异型拱桥
- Construction Control Check and Practice of Rigid-Frame Shaped Arch Bridge with Bowstring 刚架式系杆拱桥的施工控制验算与实践
- The arch bridge across the Maas River , Rotterdam . 跨马斯河的下承式拱桥,鹿特丹。
- Based on that, a finite element program which solves temperature stress of CFST arch rib is made so that the temperature stress of CFST arch bridge is analyzed qualitatively. 在此基础上,编制求解钢管混凝土拱肋温度应力的有限元程序,定性分析了钢管混凝土拱桥的温度特性.
- New architecture is provided for the strutural form of single rib trunk section bowstring arch bridge with major span and lower strutural high, nd I organized the first such type of design project. 提出了适用于较大跨度、较低结构高度的单肋箱形截面系杆拱的结构形式,并已组织完成了首项设计。
- In the design of aeroelastic model of long-span concrete-filled steel tube arch bridge, the method of using an equivalent mandril to simulate the stiffness of whole arch rib is mainly used at present. 摘要对于超大跨度钢管混凝土拱桥,由于受模型缩尺比所限,通常在气弹模型试验中不能单独模拟出拱肋中单根钢管的刚度,目前常采用集中刚度法用一个芯棒模拟整个钢管桁架的刚度。
- Adopting movable vertical rib plate welding process can not only prevent welding deformation but also enhance working efficiency evidently. 提出的采用活动式立筋板焊接操作工艺不仅可以防止焊接变形,而且明显提高工效。
- This will make much great windage and must take into account all the effects synthetically and systemicly.This thesis contains these contents of the control of CFST arch bridges’ rib shape mainly: 1. 而钢管混凝土拱桥拱肋吊装实际施工过程中,其刚度远较斜拉桥为低,很容易出现较大的偏差,必须综合系统地考虑各种影响因素,并且有必要对整个拱肋吊装过程进行纠偏控制。
- special- shaped arch bridges 异型拱桥
- Using improved thick shell element program, this paper analyses the space mechanics of shoping plate arch bridge with varies slope, produces the difinition of limitation slope. 利用改进的厚壳元程序,详细分析了斜板拱桥在不同斜度情况下的空间受力特性,提出“界限斜度”的概念。
- Foreheads which had been hidden by cloche hats were revealed and adorned with small plate shaped hats. 以前前额被吊钟型帽檐所遮蔽,现在也显露出来,用小型平顶帽来增加魅力。
- In this paper, the calculation formula of the transversely stable critical load of the rib arch bridge with transverse fixedness is deduced with the method of the equivalent compression bar. 文章用当量压杆法推导出有横向联系肋拱桥的横向稳定临界荷载计算公式,并用能量法推导出了无横向联系肋拱桥的横向稳定临界荷载计算公式,同时考虑了拱肋的扭转效应和矢跨比效应。
- An analysis of special features about long span arch bridge construction is given at first, and then, error cumulating formula is deduced based on geometry method for such arch rib. 摘要分析了大跨径拱桥空间钢箱拱肋的施工特点。
- Floor-beam webs have cracked in tied arch bridges. 在系干拱桥的横梁腹板上发生裂纹。
- Tbe different straightening methods with flame heating for side bending, hogging, angle distortion of rib plate, local unevenness of web and torsion of whole crane beam are introduced in the paper. 介绍了对焊接引起的吊车梁旁弯、拱度、翼板角变形及腹板局部不平直度以及吊车梁整体扭曲等变形所采用的不同火焰矫形工艺.
- The inhomogeneous distribution of residual stresses in rolled strip is the critical cause of bad plate shape. 摘要残余应力的不均匀分布是影响板形的根本原因。
- There are considerable pulsating stresses between the hub and rib plate of rotor spider in bulb hydrogenerator.So some defects such as cracks would occur during long-time operation of the unit. 灯泡式水轮发电机轮毂和辐板间承受很大的脉动载荷,在长期运行中,偶有裂纹等缺陷产生。
- The earliest European segmental arch bridge was built at Florence in 1345. 欧洲最早的拱桥是1345年在佛罗伦萨建成的。
- The outer layer of wind-pressure rib plate and the inner layer of corrugated board which formed a stable framework to be able to offer the powerful stiffness to withstand strong wind and earthquake. 外层抗风环向压型肋板、内层连续大波纹板,横竖肋形结构形成稳定框架,提供强大的刚度以抵御强风和地震作用。
- Who designed the arch bridge with granite-faced pylons at either end? 谁设计在拱桥两端镶有花岗岩的塔门?