Therefore, the upper bridge with simply supported continuous beam structure more and more.
因此，桥梁上部采用先简支后连续梁结构越来越多。
RC-masonry combination arch bridge makes rc arch ribs as former spanning structure and falsework of upper masonry's construction. Finally, reinforced concrete and masonry together form arch ring.
它提出了以RC拱肋作为先期的跨越结构和后期高强石砌体砌筑的施工支架，最终由石砌体和RC拱肋共同形成主拱圈的构思。
Design standard, geological conditions, structure type, upper structure, under structure of crossing bridge and road design under it in Nanji street of Harbin are expounded in this paper.
本文阐述了哈尔滨市南极街立交桥工程设计标准。地质概况、桥梁结构型式、上部结构，下部结构及桥下道路设计。
With the common application of prestress in bridge construction, the strain-pull controlling has become an important working procedure during the upper structure construction of bridge.
随着预应力在桥梁施工中的普遍应用，预应力张拉控制已成为桥梁上部结构施工中的一道重要工序。
The paper introduced the characteristics of rigid frame arch bridge, by upper and lower structure calculation, proposed its compound-simple calculation.
介绍了刚架拱桥的特点并通过上、下部结构计算，提出了对拱腿水平力影响线图和斜撑水平力影响线图进行合成简化计算。
The cable is the important component of suspension bridge. Determination of initial states of cable of large span suspension bridge is the key part of the upper structure construction.
主缆是悬索桥的重要受力构件，精确计算其空缆线形是悬索桥上部结构施工成败的关键。
The bridge structure is formed by the inside and outside arc end carriage and the upper and lower retractable main girder, with compact structure, light weight and beautiful and dignified appearance.
内外弧形端梁与上下层伸缩式主梁构成的桥架结构紧凑，重量轻巧，美观实用。
The upper structure vibration of bridge caused by the vehicles driving force may lead the structural component fatigue or reduction of the strength and stability.
车辆动力作用引起桥梁上部结构的振动可能使结构构件产生疲劳，降低其强度和稳定性；
The upper structure vibration of bridge caused by the vehicles driving force may lead the structural component fatigue or reduction of the strength and stability.
车辆动力作用引起桥梁上部结构的振动可能使结构构件产生疲劳，降低其强度和稳定性；
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