Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Production method of prestressed laminated prefabricated staircase and staircase
The production method comprises the following steps that a plurality of prestressed steel bars penetrate through a prefabricated bottom plate mold, the two ends of each prestressed steel bar are tensioned to set tension, and then concrete is poured into the prefabricated bottom plate mold; concrete of the prefabricated bottom plate mold is cured, after the strength of the concrete meets the requirement, the prestressed steel bars are loosened, demolding is conducted, and a prefabricated bottom plate is obtained; a reinforcing mesh is placed on the prefabricated bottom plate, the prefabricated bottom plate and the reinforcing mesh are placed into the stair mold, and concrete is poured into the stair mold and vibrated; the concrete in the stair mold is cured, demolding is conducted after the strength of the concrete meets the requirement, and the prestress laminated prefabricated stair is obtained; the prestressed steel bars are adopted in the prefabricated bottom plate, the using load of the stair firstly counteracts the existing pre-pressure in the concrete, and therefore the strength of the prefabricated stair is improved, and transverse cracks are reduced.
本发明公开了一种预应力叠合预制楼梯的生产方法及楼梯，所述生产方法包括以下步骤：将多根预应力钢筋穿过预制底板模具，对预应力钢筋的两端张拉至设定拉力，然后向预制底板模具内浇筑混凝土；对预制底板模具的混凝土进行养护，待混凝土强度达到要求，松开预应力钢筋，进行脱模，得到预制底板；在预制底板上放置钢筋网，将预制底板和钢筋网放入楼梯模具中，并向楼梯模具内浇筑混凝土，并进行振捣；对楼梯模具内的混凝土进行养护，待混凝土强度达到要求，进行脱模，得到预应力叠合预制楼梯；本发明的预制底板内采用预应力钢筋，楼梯的使用载荷首先抵消混凝土中已有的预压力，因而提高了预制楼梯的强度，减少了横向裂缝的产生。
Production method of prestressed laminated prefabricated staircase and staircase
The production method comprises the following steps that a plurality of prestressed steel bars penetrate through a prefabricated bottom plate mold, the two ends of each prestressed steel bar are tensioned to set tension, and then concrete is poured into the prefabricated bottom plate mold; concrete of the prefabricated bottom plate mold is cured, after the strength of the concrete meets the requirement, the prestressed steel bars are loosened, demolding is conducted, and a prefabricated bottom plate is obtained; a reinforcing mesh is placed on the prefabricated bottom plate, the prefabricated bottom plate and the reinforcing mesh are placed into the stair mold, and concrete is poured into the stair mold and vibrated; the concrete in the stair mold is cured, demolding is conducted after the strength of the concrete meets the requirement, and the prestress laminated prefabricated stair is obtained; the prestressed steel bars are adopted in the prefabricated bottom plate, the using load of the stair firstly counteracts the existing pre-pressure in the concrete, and therefore the strength of the prefabricated stair is improved, and transverse cracks are reduced.
本发明公开了一种预应力叠合预制楼梯的生产方法及楼梯，所述生产方法包括以下步骤：将多根预应力钢筋穿过预制底板模具，对预应力钢筋的两端张拉至设定拉力，然后向预制底板模具内浇筑混凝土；对预制底板模具的混凝土进行养护，待混凝土强度达到要求，松开预应力钢筋，进行脱模，得到预制底板；在预制底板上放置钢筋网，将预制底板和钢筋网放入楼梯模具中，并向楼梯模具内浇筑混凝土，并进行振捣；对楼梯模具内的混凝土进行养护，待混凝土强度达到要求，进行脱模，得到预应力叠合预制楼梯；本发明的预制底板内采用预应力钢筋，楼梯的使用载荷首先抵消混凝土中已有的预压力，因而提高了预制楼梯的强度，减少了横向裂缝的产生。
Production method of prestressed laminated prefabricated staircase and staircase
一种预应力叠合预制楼梯的生产方法及楼梯
WANG SHI (Autor:in) / ZHANG HUALIANG (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
,
Ausbau von Bauwerken, z.B. Treppen, Fußböden