Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of steel-concrete composite beam combining after applying longitudinal prestress
The invention relates to a construction method of a steel-concrete composite beam combining after applying longitudinal prestress, and belongs to the technical field of bridge construction. The method comprises the steps that a plurality of shearing force connecting pieces are welded to the top face of an upper chord of a steel truss girder; a prestressed duct arranged in the longitudinal bridge direction is pre-buried in the bridge deck slab in the longitudinal bridge direction, and a notch is reserved in the bottom of the bridge deck slab; the bridge deck slab is lifted to the top of the steel truss girder, the splicing face of the bridge deck slab is coated with a glue splicing material, then alignment splicing is conducted, and temporary prestress is applied; prestressed tendons sequentially penetrate into the prestressed ducts of the multiple bridge decks, longitudinal bridge direction prestress is applied, and then anchoring is conducted; notch concrete is poured into a notch in the joint of the bridge deck slab and the shear connector, and the bridge deck slab and the steel truss girder are combined into a whole. According to the method, the bridge decks and the steel trussed beams are combined into a whole through notch concrete pouring after prestress tensioning of the multiple bridge decks is completed, when prestress is tensioned on the bridge decks, the bridge decks and the steel trussed beams are in a separated state, and the prestress loss on the bridge decks is reduced.
本申请涉及一种先施加纵向预应力后组合的钢混组合梁施工方法，属于桥梁施工技术领域，该方法包括在钢桁梁的上弦杆的顶面焊接若干剪力连接件；在桥面板内沿纵桥向预埋有呈纵桥向设置的预应力孔道，在桥面板的底部预留槽口；将桥面板提升至钢桁梁的顶部，在桥面板的拼接面涂抹胶拼材料，然后对位拼接并施加临时预应力；利用预应力筋依次穿入多块桥面板的预应力孔道内，并施加纵桥向预应力后锚固；在桥面板与剪力连接件结合处的槽口内浇筑槽口砼，将桥面板与钢桁梁组合成整体。本申请先将多块桥面板预应力张拉完成后再进行槽口砼浇筑将桥面板与钢桁梁组合成整体，在对桥面板张拉预应力时，桥面板与钢桁梁处于分离状态，减小了桥面板上的预应力损失。
Construction method of steel-concrete composite beam combining after applying longitudinal prestress
The invention relates to a construction method of a steel-concrete composite beam combining after applying longitudinal prestress, and belongs to the technical field of bridge construction. The method comprises the steps that a plurality of shearing force connecting pieces are welded to the top face of an upper chord of a steel truss girder; a prestressed duct arranged in the longitudinal bridge direction is pre-buried in the bridge deck slab in the longitudinal bridge direction, and a notch is reserved in the bottom of the bridge deck slab; the bridge deck slab is lifted to the top of the steel truss girder, the splicing face of the bridge deck slab is coated with a glue splicing material, then alignment splicing is conducted, and temporary prestress is applied; prestressed tendons sequentially penetrate into the prestressed ducts of the multiple bridge decks, longitudinal bridge direction prestress is applied, and then anchoring is conducted; notch concrete is poured into a notch in the joint of the bridge deck slab and the shear connector, and the bridge deck slab and the steel truss girder are combined into a whole. According to the method, the bridge decks and the steel trussed beams are combined into a whole through notch concrete pouring after prestress tensioning of the multiple bridge decks is completed, when prestress is tensioned on the bridge decks, the bridge decks and the steel trussed beams are in a separated state, and the prestress loss on the bridge decks is reduced.
本申请涉及一种先施加纵向预应力后组合的钢混组合梁施工方法，属于桥梁施工技术领域，该方法包括在钢桁梁的上弦杆的顶面焊接若干剪力连接件；在桥面板内沿纵桥向预埋有呈纵桥向设置的预应力孔道，在桥面板的底部预留槽口；将桥面板提升至钢桁梁的顶部，在桥面板的拼接面涂抹胶拼材料，然后对位拼接并施加临时预应力；利用预应力筋依次穿入多块桥面板的预应力孔道内，并施加纵桥向预应力后锚固；在桥面板与剪力连接件结合处的槽口内浇筑槽口砼，将桥面板与钢桁梁组合成整体。本申请先将多块桥面板预应力张拉完成后再进行槽口砼浇筑将桥面板与钢桁梁组合成整体，在对桥面板张拉预应力时，桥面板与钢桁梁处于分离状态，减小了桥面板上的预应力损失。
Construction method of steel-concrete composite beam combining after applying longitudinal prestress
一种先施加纵向预应力后组合的钢混组合梁施工方法
ZHOU LIN (Autor:in) / XU PING'AN (Autor:in) / PAN JUN (Autor:in) / WANG DI (Autor:in) / YU BENJUN (Autor:in) / LEI YUNHUA (Autor:in) / LI XUDONG (Autor:in) / WU LEI (Autor:in) / QU ZHAOQIAN (Autor:in) / WANG KAIPENG (Autor:in)
09.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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