1) simply supported tied-arch bridge
简支系杆拱桥
1.
The main contents of construction controls and construction process of the concrete-filled steel tube simply supported tied-arch bridge was introduced,and the method with vibrating wire frequency to to measure actually tension of tie bar was put forward.
介绍了钢管混凝土简支系杆拱桥的施工过程和施工控制的主要内容,提出用弦振频率法实测系杆张拉力来分析系杆与管道之间摩阻系数的方法,根据得到的摩阻系数对系杆锚下张拉力设计值进行调整,保证了现场实际施工对张拉力的控制要求。
2) simple supported tied-arch bridge
简支式系杆拱桥
3) tied arch bridge
系杆拱桥
1.
Simple narration of cast-in-site with houseful support structure on tied arch bridge;
系杆拱桥满堂支架现浇施工方案简述
2.
Study on the construction control of tied arch bridge without support construction concrete filled steel tube;
无支架施工钢管混凝土系杆拱桥施工控制研究
3.
Continuous Jack Installation Techniques for Heavy Beams in Tied Arch Bridge;
系杆拱桥施工中大吨位横梁用连续千斤顶安装技术
4) Tied-arch bridge
系杆拱桥
1.
Stability analysis of simply supported narrow tied-arch bridge with long span;
大跨简支窄系杆拱桥稳定性能分析
2.
Experimental study on concrete-filled steel tube tied-arch bridge with CFRP hangers;
CFRP吊索钢管混凝土系杆拱桥模型试验研究
3.
Nonlinear stability of simply supported tied-arch bridge with long span;
大跨简支系杆拱桥非线性稳定性
5) bowstring arch bridge
系杆拱桥
1.
This paper is mainly concerned with the structural characteristics and research process of fiber grating strain sensors,successful applications of strain sensors in the bowstring arch bridge,particularly the tie bar cable replacement.
文中介绍光纤光栅测力传感器的结构特点和研究过程,及其在系杆拱桥换索施工中的成功应用。
2.
The main bridge of Fuxing Bridge is a double-deck bowstring arch bridge of concrete-filled steel tubes.
复兴大桥主桥为上下双层钢管混凝土系杆拱桥。
3.
The structure of the Huanghe River Bridge on Xinxiang-Zhengzhou Expressway is a concrete-filled steel tubular bowstring arch bridge with the cross sections of its arch ribs in shape of dumbbell that is not filled with concrete.
新乡至郑州高速公路黄河大桥为钢管混凝土系杆拱桥,拱肋采用腹腔不填混凝土的哑铃形截面,总体施工方案为"双侧栈桥+跨桥大型龙门吊机"方案。
6) tie bar arch bridge
系杆拱桥
1.
Design of the conformation of single steel tubes concrete tie bar arch bridge;
单管钢管混凝土系杆拱桥构造设计
2.
This article proposes a new method to calculate the initial tension of the tie bar arch bridge steeve.
提出一种系杆拱桥吊杆初始张拉力的计算方法 。
3.
The suspender cables in tie bar arch bridge are short,so it is rather difficult to calculate the short cable tension.
系杆拱桥中吊杆索长均较短,对于短索索力的计算存在相当的难度。
补充资料：螺杆式无油干式机械真空泵原理及简介
螺杆式无油干式机械真空泵是利用齿轮传动同步反向旋转的相互啮合而不接触的左螺杆与右螺杆作高速转动，利用泵壳和相互啮合的螺旋将螺旋槽分隔成多个空间、形成多个级，气体在相等的各个槽内（柱形等螺距）进行传输运动，但无压缩，只有螺杆最末端的螺旋结构对气体有压缩作用。螺杆的各级间可形成压力梯度，以分散压差和提高压缩比。各部间隙和泵转速对泵的性能有很大影响。在设计螺杆各部的间隙时，要考虑膨胀、加工及装配精度和工作环境（如抽除含粉尘气体等）等。该泵与罗茨真空泵一样不设排气阀。
泵是立式结构，进气口在上方，排气口在中部，下部为电机和润滑油池。螺杆转子呈中空形，为悬臂支承结构。同步传动齿轮位于轴承支座下面。变频电机通过联轴节与主动转子连接。该泵的气体路径较短，且立式结构对排除含微尘气体较为有利。泵外壳有水冷却，泵维修也便利。
这种类型的泵如果选用适当的较简单螺杆牙型截面，则制造简单，可保证很高的加工精度，且容易动平衡。
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