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Construction method of large-span retard-bonded prestressed hollow floor core mold
According to the construction method of the large-span retard-bonded prestressed hollow floor core mold, the bottom of the core mold is machined into a trapezoidal slope, so that concrete enters a floor bottom plate from a hidden beam; two anti-floating steel bars are arranged on the two sides of the top face of the core mold in parallel, a bearing plate and the anti-floating steel bars are additionally arranged on the lower layers of the anti-floating steel bars, double-strand steel wires are pulled downwards along the hidden beam to the bottom steel bars of the hollow floor bottom plate to be fixed, double-strand steel wires are pulled downwards to the frame body vertical rod connecting buckles to be fixed at the positions, 0.2 m away from the hidden beam edge, of the middle steel bars of the upper layer of the bottom plate, and all inspection is conducted in the inspection and acceptance process; a cylindrical hole is reserved in the middle of the core mold, and after floor system bottom plate concrete is poured compactly, battens are adopted for covering and fixing to ensure that the concrete does not flow in. The problems of floating, displacement, dislocation and even overall floating of the core mold in the construction process of the polyphenyl core mold in the concrete pouring process are solved, compact pouring of the bottom of the core mold and the structure size of a concrete structure are guaranteed, good economic benefits and social benefits are obtained, and reliable reference is provided for similar projects in the future.
大跨度缓粘结预应力空心楼盖芯模施工方法，芯模底部加工成梯形斜面，以便混凝土从暗梁进入楼盖底板；在芯模顶面两侧平行设置两道抗浮钢筋，抗浮钢筋下层增设承压板，抗浮钢筋，用双股钢丝延暗梁下拉至空心楼盖底板底部钢筋固定，底板上层中间钢筋，距暗梁边0.2米处采用双股钢丝下拉至架体立杆连接扣处固定，验收过程中全数检查；芯模中间预留圆柱孔，待楼盖底板混凝土浇筑密实后，采用木方覆盖固定保证混凝土不流入。解决了混凝土浇筑过程中聚苯芯模施工过程中芯模上浮、位移、错位、甚至整体上浮，保证芯模底部浇筑密实、混凝土结构结构尺寸，取得了良好的经济效益和社会效益，为以后同类工程提供可靠的参考。
Construction method of large-span retard-bonded prestressed hollow floor core mold
According to the construction method of the large-span retard-bonded prestressed hollow floor core mold, the bottom of the core mold is machined into a trapezoidal slope, so that concrete enters a floor bottom plate from a hidden beam; two anti-floating steel bars are arranged on the two sides of the top face of the core mold in parallel, a bearing plate and the anti-floating steel bars are additionally arranged on the lower layers of the anti-floating steel bars, double-strand steel wires are pulled downwards along the hidden beam to the bottom steel bars of the hollow floor bottom plate to be fixed, double-strand steel wires are pulled downwards to the frame body vertical rod connecting buckles to be fixed at the positions, 0.2 m away from the hidden beam edge, of the middle steel bars of the upper layer of the bottom plate, and all inspection is conducted in the inspection and acceptance process; a cylindrical hole is reserved in the middle of the core mold, and after floor system bottom plate concrete is poured compactly, battens are adopted for covering and fixing to ensure that the concrete does not flow in. The problems of floating, displacement, dislocation and even overall floating of the core mold in the construction process of the polyphenyl core mold in the concrete pouring process are solved, compact pouring of the bottom of the core mold and the structure size of a concrete structure are guaranteed, good economic benefits and social benefits are obtained, and reliable reference is provided for similar projects in the future.
大跨度缓粘结预应力空心楼盖芯模施工方法，芯模底部加工成梯形斜面，以便混凝土从暗梁进入楼盖底板；在芯模顶面两侧平行设置两道抗浮钢筋，抗浮钢筋下层增设承压板，抗浮钢筋，用双股钢丝延暗梁下拉至空心楼盖底板底部钢筋固定，底板上层中间钢筋，距暗梁边0.2米处采用双股钢丝下拉至架体立杆连接扣处固定，验收过程中全数检查；芯模中间预留圆柱孔，待楼盖底板混凝土浇筑密实后，采用木方覆盖固定保证混凝土不流入。解决了混凝土浇筑过程中聚苯芯模施工过程中芯模上浮、位移、错位、甚至整体上浮，保证芯模底部浇筑密实、混凝土结构结构尺寸，取得了良好的经济效益和社会效益，为以后同类工程提供可靠的参考。
Construction method of large-span retard-bonded prestressed hollow floor core mold
大跨度缓粘结预应力空心楼盖芯模施工方法
LEI BO (author) / YAN HE (author) / LIU XIAODONG (author) / YANG TIANSHI (author)
2022-06-17
Patent
Electronic Resource
Chinese
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