全预制装配整体式剪力墙结构节点连接施工技术

Joint Connection Construction Technology of the New Precast Concrete Shear Wall Structure

全预制装配整体式剪力墙结构(NPC)剪力墙、柱、电梯井、阳台、空调板、雨篷等构件采用工厂化预制生产,预留注浆管及节点钢筋;梁、板等水平构件采用工厂化预制生产叠合梁、板,预留上层钢筋及端部节点钢筋。通过现场吊装、注浆管浆锚节点现浇形成整体结构体系。阐述了该结构体系的技术特点、适用范围。重点介绍了NPC现场施工的关键施工技术,包括定位放线,竖向钢筋校正,构件吊装、固定、校正,浆锚节点施工,养护等。

The components of shear wall, column, elevator shaft, balcony, air conditioning board and canopy in the new precast concrete shear wall structure are prefabricated in factory, in which grouting pipe and joint steel bars are reserved. In addition, the horizontal components such as beam and slab are also prefabricated in factory into composite beams and slabs, in which upper and ending joint steel bars are reserved. Through hoisting on site, cast-in-situ concrete of slurry and anchor joint, the structure is formed integral system. The technology characteristics and application scope of this structure are described. Furthermore, key construction technologies on site such as location and positioning, correction of vertical steel bars, hoisting, fixation and correction of components, construction of slurry and anchor joint, maintenance are introduced in detail.