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Design method for transverse stiffening bottom plate of wide concrete box girder
The invention discloses a design method for a transverse stiffening bottom plate of a wide concrete box girder, and relates to the technical field of concrete. According to the design method for the transverse stiffening bottom plate of the wide concrete box girder, after a longitudinal area where transverse stress of the bottom plate is most unfavorable is obtained through calculation and analysis, transverse stiffening structures of the bottom plate are arranged at certain intervals in the longitudinal direction or in the full area according to beam segment characteristics, so that the transverse flexural rigidity in the area length range of the bottom plate is improved, and the transverse stiffening structure is formed. The hidden design danger that only the mid-span section is checked in the traditional design is changed, so that the unfavorable transverse stress area of the whole bottom plate and the possibility of cracking caused by the self weight of the bottom plate and the radial force of the bottom plate steel beam of the variable height beam are reduced, and the self weight of the bridge and the construction scale are reduced. When the design mode is applied to equal-height beams, the design and construction requirements of light weight and modularization of the bridge can be met.
本发明公开了一种宽幅混凝土箱梁横向加劲底板设计方法，涉及混凝土技术领域。该宽幅混凝土箱梁横向加劲底板设计方法，通过计算分析获得底板横向受力最不利纵向区域后，根据梁体节段特性，延纵向一定间距或按梁段节段间距，满区域布设底板横向加劲构造，以提高底板的区域长度范围内横向抗弯刚度，改变传统设计仅验算跨中截面的设计隐患，从而降低整个底板横向受力不利区域，由底板自重及变高梁底板钢束径向力造成开裂的可能，进而降低桥梁自重及建设规模。当该设计方式运用在等高梁时，也能满足桥梁轻型化及模块化的设计及建造需求。
Design method for transverse stiffening bottom plate of wide concrete box girder
The invention discloses a design method for a transverse stiffening bottom plate of a wide concrete box girder, and relates to the technical field of concrete. According to the design method for the transverse stiffening bottom plate of the wide concrete box girder, after a longitudinal area where transverse stress of the bottom plate is most unfavorable is obtained through calculation and analysis, transverse stiffening structures of the bottom plate are arranged at certain intervals in the longitudinal direction or in the full area according to beam segment characteristics, so that the transverse flexural rigidity in the area length range of the bottom plate is improved, and the transverse stiffening structure is formed. The hidden design danger that only the mid-span section is checked in the traditional design is changed, so that the unfavorable transverse stress area of the whole bottom plate and the possibility of cracking caused by the self weight of the bottom plate and the radial force of the bottom plate steel beam of the variable height beam are reduced, and the self weight of the bridge and the construction scale are reduced. When the design mode is applied to equal-height beams, the design and construction requirements of light weight and modularization of the bridge can be met.
本发明公开了一种宽幅混凝土箱梁横向加劲底板设计方法，涉及混凝土技术领域。该宽幅混凝土箱梁横向加劲底板设计方法，通过计算分析获得底板横向受力最不利纵向区域后，根据梁体节段特性，延纵向一定间距或按梁段节段间距，满区域布设底板横向加劲构造，以提高底板的区域长度范围内横向抗弯刚度，改变传统设计仅验算跨中截面的设计隐患，从而降低整个底板横向受力不利区域，由底板自重及变高梁底板钢束径向力造成开裂的可能，进而降低桥梁自重及建设规模。当该设计方式运用在等高梁时，也能满足桥梁轻型化及模块化的设计及建造需求。
Design method for transverse stiffening bottom plate of wide concrete box girder
一种宽幅混凝土箱梁横向加劲底板设计方法
SHI GUANGJUN (author) / ZHOU ZHOU (author) / ZHANG YANQUAN (author) / CAO XIAOBO (author)
2024-01-02
Patent
Electronic Resource
Chinese
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