Combined shell pipe gallery bottom T-shaped joint and construction method thereof: Fid-Bau Portal

Combined shell pipe gallery bottom T-shaped joint and construction method thereof

DONG LEI / LI RENKANG / YAO AIJUN

The invention discloses a T-shaped joint at the bottom of a combined shell pipe gallery and a construction method thereof. The T-shaped joint at the bottom of the combined shell pipe gallery is formed by splicing a cast-in-place bottom plate in a combined shell middle wall plate prefabricated in a factory on a construction site; and after splicing is completed, concrete is poured on a construction site to complete node structure construction. The combined shell is composed of a wallboard steel reinforcement framework, an opposite-pull connecting piece and a high-strength formwork. According to the joint, the bottom plate and the prefabricated middle wall plate are connected through cast-in-place concrete, the connecting position is seamless, and the waterproof effect is good; the mass of the combined shell component is only one fifth of the weight of a full prefabricated component, and the component transportation cost is low; the joint does not change the concrete section and the steel bar connection mode of a cast-in-place component, and the integrity is kept consistent with cast-in-place. The high-strength formwork material and the steel reinforcement framework are connected together through the connecting pieces, the component standardization degree is high, and the design foundation of industrial production is achieved.

本发明公开了组合壳管廊底部T型节点及其施工方法，包括现浇底板在工厂预制的组合壳中墙板在施工现场拼接形成组合壳管廊底部T型节点；拼接完成后在施工现场浇筑混凝土完成节点结构施工。组合壳中墙板钢筋骨架、对拉连接件和高强模板组成。本发明节点采用现浇混凝土将底板和预制中墙板连接，连接位置无接缝，防水效果好；组合壳构件质量只有全预制构件重量的五分之一，构件运输成本低；该节点不改变现浇构件的混凝土截面和钢筋连接方式，整体性保持与现浇一致。中墙板通过连接件将高强模板材料和钢筋骨架连接在一起，构件标准化程度高，具有工业化生产的设计基础。

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