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upper chord
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  上弦
     Make sure the pumping project that concrete should be symmetrically pumped into the two lower chord members before into the two upper chord members.
     确定了先同时对称泵送两根下弦管混凝土,再对称泵送两根上弦管混凝土的泵送方案。
短句来源
     The bottom chord of the truss adopts 3Φ500 CFST, and the upper chord adopts 4Φ450. The bridge was designed in 1998, put into construction in 1999, and complete in April of 2001. During this period, I have analyzed and studied on the design and construction of the bridge.
     钢管混凝土桁架下弦采用3φ500钢管混凝土、上弦采用4φ450钢管混凝土。 大桥于1998年设计,1999年开工兴建,2001年4月竣工。
短句来源
     The radial truss upper chord joints of Guangzhou Gymnasium steel roof are the welded joints between square steel pipe and round steel pipes,they are formed"K"or"T"shape The bottom chord joints are the welded joints between steel pipes and steel bar that is welded at the bottom of the vertical web member The test of the upper and bottom chord joint is introduced, the finite element analysis of the joint and the design of the joint are introduced as well
     广州体育馆屋盖辐射桁架上弦节点采用K型、T型的方钢管与圆钢管的直接焊接相贯节点 ,下弦采用垂直腹杆下端实心钢棒与钢管焊接。 介绍上下弦节点的试验情况、有限元分析及节点设计
短句来源
     Network arch structure is a new type of structure composed of upper chord arch,lower chord members and diagonal members.
     网络拱结构系由上弦拱、下弦杆及交叉倾斜的系杆组成的一种新型结构形式.
短句来源
  “upper chord”译为未确定词的双语例句
     The Selection and the Analysis of the Upper Chord of the Prestressed Cantilever Arched Truss Bridge and the Reasonable Bending Stiffness Ratios of the Arch
     大跨径预应力拱桁桥上弦与下弦合理刚度比的确定
短句来源
     The possible shear of the upper chord will change beam from flexural member to member under flexure and compression force. This is emphasised through design example.
     在组合楼盖体系设计中,笔者指出,可能的桁架弦杆剪力会使作为桁架弦杆侧向支承的梁由弯曲构件变为压弯构件,这是在与桁架体系相适应的楼盖体系设计中应该注意的一个环节。
短句来源
     It is also found that the rigidity of each member of truss in ultimate strength state is diffe- rent from its elastic rigidity,especially for the compressive rigidity of upper chord,and thus the authors provide a rather simple and applicable calculating formula.
     屋架在强度极限状态时各杆件的刚度与弹性刚度不同,特别是对压弦刚度,提出简单适用的计算公式。
短句来源
     The Pizhou viaduct on Jinghang Grand Canal is a double-faces and double-towers prestressed oblique-pulling truss. Engineers applied prestress on its upper chord bars,bottom chord bars and some tension members and adopted a series of measures to ensure stress-balance of bars in every construction stage.
     京杭运河邳州高架桥采用双面双塔式预应力斜拉桁架 ,桁架上、下弦杆件及部分受拉腹杆中施加预应力 ,预应力施工时通过采取一系列措施 ,确保了杆件在各施工阶段的受力平衡
短句来源
  相似匹配句对
     Control of Anchorage Forces in Assembly and Prestressing Forces in Upper-chord in Construction of Tianzishan Bridge
     天子山大桥悬拼锚固力与上弦预应力的施工控制
短句来源
     On The Rule Of Denominating-Chord
     关于和弦名称的确定原则
短句来源
     The programs of upper computer.
     一、上位计算机程序。
短句来源
     ON SCHOTTKY UPPER BOUNDS
     关于Schottky上界
短句来源
     3. Broken chord;
     3、琶音的演奏;
短句来源
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  upper chord
When purlins are above the upper chord, the battens are fixed under the purlins.
      
The tops of the purlins can be set level with the upper chord allowing joins in ceiling material to be concealed.
      
The relatively deep upper chord and lack of miter in the lower chord at the heel create substantial eccentricity in the joint.
      
The bascule span comprises three truss girders with a sloping upper chord.
      
The adjustable joints for fixing panels on the upper chord joints of the structure is shown below.
      
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Under loading condition, the lower chord of a girder truss is subjected to the combined action of prestressed compression, large axial tension, moment, shear and torsion, while the upper chord is subjected to the combined action of axial compression, moment, shear and torsion. The analysis of the results of 5 bottom loaded trusses,2 top loaded trusses and 10 beam models subjected to compression, moment and torsion shows that the calculation of such members by the formula of the torsional strength of the...

Under loading condition, the lower chord of a girder truss is subjected to the combined action of prestressed compression, large axial tension, moment, shear and torsion, while the upper chord is subjected to the combined action of axial compression, moment, shear and torsion. The analysis of the results of 5 bottom loaded trusses,2 top loaded trusses and 10 beam models subjected to compression, moment and torsion shows that the calculation of such members by the formula of the torsional strength of the flexure torsion members in current code(TJ 10-74) and the principle of superposition are not adaptable, otherwise the results would be too safe. Practical formulas for computing the torsional strength considering the combined action of above mentioned forces are presented. Both calculated and test results are in good agreement.

托架下弦处于预压力、强大的轴拉力、弯矩、剪力和扭矩的共同作用下工作;而托架上弦则处于轴压力、弯矩、剪力和扭矩的共同作用下工作。本文经过5榀下承式托架和2榀上承式托架以及10个压弯扭模型梁的试验分析说明:用我国钢筋混凝土结构设计规范TJ 10-14中弯扭构件的抗扭强度计算公式和迭加原理计算这些构件是不合适的,而且编于过分安仝。在分析这些试验资料的基础上,提出了一个考虑拉、弯、剪、扭和压、弯、扭共同作用的实用强度计算方法,计算结果与试验结果符合较好。

This article deals with the Elasto-Plastic behaviours of reinforced and prestressed concrete trusses on the basis of statical loading tests。 Where the Stress Performances,breaking forms,load-flexibility curves and axial or bending rigidities of each member are all com- prised。 In this article,It is found that the shearing stress of upper chord, do affects its compression strength thus,a preliminary relevant calcula- ting formula is provided It is also analysed that in the ultimate streng- th state of prestressedo...

This article deals with the Elasto-Plastic behaviours of reinforced and prestressed concrete trusses on the basis of statical loading tests。 Where the Stress Performances,breaking forms,load-flexibility curves and axial or bending rigidities of each member are all com- prised。 In this article,It is found that the shearing stress of upper chord, do affects its compression strength thus,a preliminary relevant calcula- ting formula is provided It is also analysed that in the ultimate streng- th state of prestressedo trusses,the magnitudes of secondary internaI for- ces are so large that they should not be neglected.It is also found that the rigidity of each member of truss in ultimate strength state is diffe- rent from its elastic rigidity,especially for the compressive rigidity of upper chord,and thus the authors provide a rather simple and applicable calculating formula. For analysing secondary-internaI forces of the truss,the authors suggest a calculating criterion and a practicable simple method which may be called as-“beam analogy method”

本文依据钢筋混凝土、予应力混凝土屋架静载试验,研究屋架的受力性能,屋架的受荷破坏形态、屋架的荷载—挠度曲线以及屋架各杆件的轴力刚度和弯曲刚度。文中分析了:屋架上弦的剪切力作用,影响上弦的受压强度,初步提供有关计算公式;予应力混凝土屋架在强度设计的极限状态,有相当数量的次内力,不宜忽略;屋架在强度极限状态时各杆件的刚度与弹性刚度不同,特别是对压弦刚度,提出简单适用的计算公式。本文为屋架强度次内力分析,提出计算原则及简单实用的挠度分析方法——“似梁法”。

The emphasis of this paper is placed on the description of a series of calculating analyses of the extreme internal forces on the members of a prestressed concrete cantilever arched-truss bridge under live loads. The calculations are made by adopting the finite alement method by plane beam elements. We apply the dynamic programming to decide the use of the truck loading and carry out five different bending stiffness ratios and area ratios of upper chord's section to lower chord's section, thus the...

The emphasis of this paper is placed on the description of a series of calculating analyses of the extreme internal forces on the members of a prestressed concrete cantilever arched-truss bridge under live loads. The calculations are made by adopting the finite alement method by plane beam elements. We apply the dynamic programming to decide the use of the truck loading and carry out five different bending stiffness ratios and area ratios of upper chord's section to lower chord's section, thus the magnitude range of these ratios is found.

本文以应用平面杆系有限元法、动态规划法加载,对拱桁桥在上弦(即桥面)与下弦的五种抗弯刚度(EJ)比和截面积(F)比的情况下,进行了活载杆件内力极值的受力分析,从而揭示出上弦与下弦杆的合理刚度比和截面积比的数值范围。

 
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