下弦杆 meaning in Chinese
bottom boom bar
bottom chord bar
low-boom
lower boom
lower chord
Examples
- Curved bottom chord
曲线形下弦杆 - The set of tectonic cracks on down beam is beneficial to anti - seism along the longitudinal and side long of aqueducts
拱架下弦杆分缝断开的做法对纵、横槽向抗震的最终效果是有利的。 - The biggest difference from the usual down bearing arch structure lies in this points that the four tectonic cracks on its two down beans ca n ' t constrain the level forces
它与常规的下承式拱架支承结构的最大区别在于它的两道下弦杆设置了四道断缝，从而使下弦杆失去对拱脚水平力的约束作用。 - On the basis of some correlative research work and according to the characteristic of double - layer cylindrical lattice shell , a new semi - active control strategy of certain bottom chords replaced by special controllable dampers and a new passive control strategy of certain bottom chords replaced by various dampers are presented
本文在已有研究的基础上，根据双层柱面网壳的自身特点，提出了一种用可控杆件替换网壳中某些下弦杆的半主动控制策略。进一步又研究了用粘滞性阻尼杆代替网壳某些下弦杆的被动控制策略。 - 3 , the comparing analyses of tech - economic features , anti - seismic features on transverse direction of the aqueduct 1 ) from the angle of engineering cost , steeve - arch supporting structure , whose down beam have tectonic cracks , can spend less money up to 90 % or more than the usual arch supporting structure , namely steeve - arch supporting structure is very obvious on the side of cost
3 、技术经济比较分析1 )从造价方面看，下弦杆分缝的吊杆式拱架结构相对于下弦杆构造不分缝的竖杆式拱架结构可节约工程造价达到90以上，吊杆拱的经济效果十分明显。