Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cast-in-place hidden cross beam pier top block construction method applied to segmental beam structure bridge
The invention relates to the technical field of bridge construction, and discloses a cast-in-place hidden cross beam pier top block construction method applied to a segmental beam structure bridge, which comprises the following steps: pre-stress design: designing temporary pre-stress before construction; a pier top block is manufactured, a temporary support is erected according to temporary prestress, pre-pressing and encrypted measurement are conducted, the hidden cross beam manufacturing pre-camber is set, and cast-in-place manufacturing of the pier top block is completed; the hidden cross beam is tensioned, and after the concrete strength of the pier top block reaches a design value, the permanent prestress and the temporary prestress of the hidden cross beam are sequentially tensioned to the design value; and the bridge girder erection machine station is located on the hidden cross beam, all segmental beams of the span are suspended and hoisted, the internal prestressing tendons are tensioned, and finally the full-connection external tendons are tensioned. According to the cast-in-place hidden cross beam pier top block construction method applied to the segmental beam structure bridge, during cast-in-place manufacturing of the hidden cross beam, temporary internal prestress is arranged on the top of the hidden cross beam, and permanent prestress tensioning of the hidden cross beam can be completed at a time in the construction stage.
本发明涉及桥梁施工技术领域，公开了一种应用于节段梁结构桥梁中的现浇隐横梁墩顶块施工方法，包括如下步骤：预应力设计，施工前设计临时预应力；墩顶块制作，根据临时预应力搭设临时支架，预压并加密测量，设置隐横梁制作预拱度，完成墩顶块的现浇制作；张拉隐横梁，待墩顶块的混凝土强度达到设计值后依次张拉隐横梁永久预应力及临时预应力至设计值；张拉预应力束，架桥机站位于隐横梁上，悬挂吊装本跨全部节段梁，张拉体内预应力束，最后张拉全联体外束。本发明适用于一种应用于节段梁结构桥梁中的现浇隐横梁墩顶块施工方法，在隐横梁现浇制作时其顶部设置临时体内预应力，使隐横梁在施工阶段能够一次性完成永久预应力张拉。
Cast-in-place hidden cross beam pier top block construction method applied to segmental beam structure bridge
The invention relates to the technical field of bridge construction, and discloses a cast-in-place hidden cross beam pier top block construction method applied to a segmental beam structure bridge, which comprises the following steps: pre-stress design: designing temporary pre-stress before construction; a pier top block is manufactured, a temporary support is erected according to temporary prestress, pre-pressing and encrypted measurement are conducted, the hidden cross beam manufacturing pre-camber is set, and cast-in-place manufacturing of the pier top block is completed; the hidden cross beam is tensioned, and after the concrete strength of the pier top block reaches a design value, the permanent prestress and the temporary prestress of the hidden cross beam are sequentially tensioned to the design value; and the bridge girder erection machine station is located on the hidden cross beam, all segmental beams of the span are suspended and hoisted, the internal prestressing tendons are tensioned, and finally the full-connection external tendons are tensioned. According to the cast-in-place hidden cross beam pier top block construction method applied to the segmental beam structure bridge, during cast-in-place manufacturing of the hidden cross beam, temporary internal prestress is arranged on the top of the hidden cross beam, and permanent prestress tensioning of the hidden cross beam can be completed at a time in the construction stage.
本发明涉及桥梁施工技术领域，公开了一种应用于节段梁结构桥梁中的现浇隐横梁墩顶块施工方法，包括如下步骤：预应力设计，施工前设计临时预应力；墩顶块制作，根据临时预应力搭设临时支架，预压并加密测量，设置隐横梁制作预拱度，完成墩顶块的现浇制作；张拉隐横梁，待墩顶块的混凝土强度达到设计值后依次张拉隐横梁永久预应力及临时预应力至设计值；张拉预应力束，架桥机站位于隐横梁上，悬挂吊装本跨全部节段梁，张拉体内预应力束，最后张拉全联体外束。本发明适用于一种应用于节段梁结构桥梁中的现浇隐横梁墩顶块施工方法，在隐横梁现浇制作时其顶部设置临时体内预应力，使隐横梁在施工阶段能够一次性完成永久预应力张拉。
Cast-in-place hidden cross beam pier top block construction method applied to segmental beam structure bridge
一种应用于节段梁结构桥梁中的现浇隐横梁墩顶块施工方法
XIANG ZILI (Autor:in) / ZHANG QINGMING (Autor:in) / DONG WEI (Autor:in) / XU LUEQIN (Autor:in) / LIU QIANLIN (Autor:in) / LIU XIAOYONG (Autor:in) / ZHANG CHANG (Autor:in) / XIA YINHAO (Autor:in) / WEI MIN (Autor:in) / XU LIHAN (Autor:in)
12.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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