OSDTS not only has good wholeness, big stiffness, but also decreases the whole deformation of bridge and improves the mechanical behavior of deck with the bottom chord and tie beam heightened. 2.

該方案整體性好、剛度大，由于下弦桿和系梁加高，不僅橋梁的整體變形減小，而且也改善了橋面系的受力狀態。

Institute on The Hole Drill Technique of Bottom Chord Bar of Zhengzhou Yellow River Bridge

鄭州黃河橋邊桁下弦桿制孔工藝研究

In which one of them was common reinforced concrete structure, and the other used prestressed steel reinforced concrete ( PSRC) in bottom chord of the transfer structure.

其中一榀模型為普通鋼筋混凝土結構，另一榀模型在底部轉換梁施加了預應力，并在底部轉換梁及部分桿件采用了鋼骨混凝土。

The double groove steel is suspended under the two nodes of bottom chord of steel roof truss to prevent the bottom chord from stretch bending.

文章論述了在設計中采用鋼屋架下弦兩節點下懸吊雙槽鋼作為分布梁避免鋼屋架下弦拉彎工作。

The Construction Analysis of Prestressed Bottom Chord Shuttle Shape Spatial Truss

下弦管內預應力梭形空間桁架結構施工分析

The bottom chord of the truss is used by pre-stress steel bar.

主樓和裙房間采用大跨魚腹桁架，桁架下弦采用高強度預應力鋼棒。

The analysis reveals that the dynamic behavior of the converse trapezoid CHS truss with double pipe bottom chord is quite good.

分析表明以下弦雙鋼管為特征的倒梯形立體管桁架的動力特性非常理想；

This paper establishes the fatigue stress spectrum of the transom and the bottom chord of a bridge over the Yellow River based on the measured stress and confirms the residual fatigue life by using mathematical model of existed steel bridge fatigue life.

以黃河某大橋的實測應力為基準，建立其橫梁、下弦桿的疲勞應力譜，并運用既有鋼橋疲勞壽命的數學模型確定其剩余疲勞壽命。

The influence of crane load to the internal force of bottom chord bar of trapezoid steel roof truss

水動力荷載；吊車荷載對梯形鋼屋架下弦桿內力的影響