Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Top plate transverse stiffening type prestressed concrete wide-body box girder
The invention discloses a top plate transverse stiffening type prestressed concrete wide-body box girder which comprises a concrete top plate, a concrete bottom plate, concrete webs, concrete transverse stiffening ribs and transverse prestressed steel beams. The transverse stiffening ribs are divided into web plate outer transverse stiffening ribs and web plate inner transverse stiffening ribs; the cross section of the web outer transverse stiffening rib is a trapezoidal cross section, and the thickness of the cross section is linearly increased from the end part of the cantilever slab to the root part; the transverse stiffening ribs in the web are distributed in the middle in an equal-thickness manner, and the corners are thickened; and transverse prestressed steel beams are arranged in the concrete top plate and the concrete transverse stiffening ribs. The transverse stiffening ribs can reduce the thickness of the cantilever plate of the box girder and reduce the self weight of the top plate of the box girder, so that the length of the cantilever plate is prolonged, and meanwhile, the transverse flexural rigidity of the section of the root of the cantilever plate is ensured; the transverse prestressed steel beams are arranged in the top plate and the transverse stiffening ribs, so that the box girder structure has better deformation performance and crack resistance on the premise of ensuring safety; and the light-weight development of the bridge is promoted.
本发明公开一种顶板横向加劲式预应力混凝土宽体箱梁，包括混凝土顶板，混凝土底板，混凝土腹板，混凝土横向加劲肋，横向预应力钢束；横向加劲肋分为腹板外横向加劲肋和腹板内横向加劲肋；腹板外横向加劲肋横截面为梯形截面，截面厚度由悬臂板端部向根部方向线性增加；腹板内横向加劲肋在中间部分等厚度分布，转角处加厚；混凝土顶板和混凝土横向加劲肋内设置有横向预应力钢束。本发明的横向加劲肋能减小箱梁悬臂板厚度，减轻箱梁顶板的自重，从而在延长悬臂板长度的同时，保证悬臂板根部截面横向抗弯刚度；在顶板和横向加劲肋中设置横向预应力钢束，能在保证安全的前提下，使箱梁结构有更好的变形性能和抗裂性能；推进桥梁向轻型化方向发展。
Top plate transverse stiffening type prestressed concrete wide-body box girder
The invention discloses a top plate transverse stiffening type prestressed concrete wide-body box girder which comprises a concrete top plate, a concrete bottom plate, concrete webs, concrete transverse stiffening ribs and transverse prestressed steel beams. The transverse stiffening ribs are divided into web plate outer transverse stiffening ribs and web plate inner transverse stiffening ribs; the cross section of the web outer transverse stiffening rib is a trapezoidal cross section, and the thickness of the cross section is linearly increased from the end part of the cantilever slab to the root part; the transverse stiffening ribs in the web are distributed in the middle in an equal-thickness manner, and the corners are thickened; and transverse prestressed steel beams are arranged in the concrete top plate and the concrete transverse stiffening ribs. The transverse stiffening ribs can reduce the thickness of the cantilever plate of the box girder and reduce the self weight of the top plate of the box girder, so that the length of the cantilever plate is prolonged, and meanwhile, the transverse flexural rigidity of the section of the root of the cantilever plate is ensured; the transverse prestressed steel beams are arranged in the top plate and the transverse stiffening ribs, so that the box girder structure has better deformation performance and crack resistance on the premise of ensuring safety; and the light-weight development of the bridge is promoted.
本发明公开一种顶板横向加劲式预应力混凝土宽体箱梁，包括混凝土顶板，混凝土底板，混凝土腹板，混凝土横向加劲肋，横向预应力钢束；横向加劲肋分为腹板外横向加劲肋和腹板内横向加劲肋；腹板外横向加劲肋横截面为梯形截面，截面厚度由悬臂板端部向根部方向线性增加；腹板内横向加劲肋在中间部分等厚度分布，转角处加厚；混凝土顶板和混凝土横向加劲肋内设置有横向预应力钢束。本发明的横向加劲肋能减小箱梁悬臂板厚度，减轻箱梁顶板的自重，从而在延长悬臂板长度的同时，保证悬臂板根部截面横向抗弯刚度；在顶板和横向加劲肋中设置横向预应力钢束，能在保证安全的前提下，使箱梁结构有更好的变形性能和抗裂性能；推进桥梁向轻型化方向发展。
Top plate transverse stiffening type prestressed concrete wide-body box girder
一种顶板横向加劲式预应力混凝土宽体箱梁
ZHOU MAN (Autor:in) / SU XIAOLONG (Autor:in) / ZHUANG HAIYAN (Autor:in) / LIAO JIACONG (Autor:in)
31.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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