bottom chord

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.

该方案整体性好、刚度大，由于下弦杆和系梁加高，不仅桥梁的整体变形减小，而且也改善了桥面系的受力状态。

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

郑州黄河桥边桁下弦杆制孔工艺研究

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.

其中一榀模型为普通钢筋混凝土结构，另一榀模型在底部转换梁施加了预应力，并在底部转换梁及部分杆件采用了钢骨混凝土。

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.

文章论述了在设计中采用钢屋架下弦两节点下悬吊双槽钢作为分布梁避免钢屋架下弦拉弯工作。

The Construction Analysis of Prestressed Bottom Chord Shuttle Shape Spatial Truss

下弦管内预应力梭形空间桁架结构施工分析

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

主楼和裙房间采用大跨鱼腹桁架，桁架下弦采用高强度预应力钢棒。

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

分析表明以下弦双钢管为特征的倒梯形立体管桁架的动力特性非常理想；

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.

以黄河某大桥的实测应力为基准，建立其横梁、下弦杆的疲劳应力谱，并运用既有钢桥疲劳寿命的数学模型确定其剩余疲劳寿命。

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

水动力荷载；吊车荷载对梯形钢屋架下弦杆内力的影响