摘要
独肋下承式系杆拱桥具有跨越能力强,占用桥面宽度少,桥面标高低,结构简洁,造型优美,施工方式灵活多变,适应能力强等特点,在现代城市建设中得到广泛应用。由于横向只有一片拱肋,一般拱肋设置在桥面横向中间位置,吊杆也设置在拱肋正下方,如果桥面宽度较大,则对桥面横向受力要求较高。通过工程实例,应用平面及空间计算软件,分别对结构纵向整体受力及横向受力进行对比计算,同时对结构的空间稳定性进行分析,确保桥梁各个构件的受力满足要求~([1]),为类似桥型设计提供了参考。
The single-rib through bowstring arch has the characteristics of strong spanning capacity,less bridge deck width,low deck elevation,simple structure,appealing design,flexible and changeable construction methods,and good adaptive capacity so that it is widely applied in the modern city construction.The arch rib is generally set in the middle of bridge deck and the boom is also set directly below the arch rib because of only one arch rib transversely.If the deck width is larger,the transverse stress requirement of bridge deck is higher.Through an engineering case,the plane and spatial calculation software is used to compare and calculate the longitudinal overall stress and transverse stress of structure respectively.At the same time,the spatial stability of structure is analyzed to ensure the stress of each bridge component meet the requirements,which can be referred for the design of the similar bridges.
出处
《城市道桥与防洪》
2021年第3期47-51,M0008,共6页
Urban Roads Bridges & Flood Control
关键词
独系杆拱
叠合梁
钢混结合段
空间稳定性
single-rib bowstring arch
composite girder
steel-concrete composite section
spatial stability
