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Mass concrete construction method combining warehouse jumping method and prestress technology
The invention discloses a mass concrete construction method combining a skip method and a prestress technology. The mass concrete construction method comprises the following steps that 1, a construction area is divided into a pre-pouring bin and a post-pouring bin based on the skip method; 2, pre-acting prestressed tendons and post-acting prestressed tendons are reserved in each bin block; at least tensioning and restraining pre-acting prestressed tendons in the pre-pouring bin; step 3, pouring pre-pouring bin concrete; 4, releasing constraints at the two ends of the pre-working prestressed tendon after the concrete in the pre-pouring bin is subjected to heat expansion; 5, after the concrete in the pre-pouring bin shrinks and is tensioned, prestressed tendons are used; 6, post-pouring bin concrete is poured; before, the post-pouring bin is tensioned and restrained to serve as pre-stressed tendons; 7, after the post-pouring bin concrete is subjected to heat expansion, constraint at the two ends of the pre-acting prestressed tendons is relieved; and 8, closing construction is conducted on the pre-pouring bin and the post-pouring bin. According to the construction method, the risk that cracks are generated during expansion and shrinkage of the mass concrete is reduced, and the construction efficiency is improved due to the fact that the larger bin dividing size is allowed.
本发明公开了一种结合跳仓法和预应力技术的大体积混凝土施工方法，包括以下步骤：步骤1：基于跳仓法将施工区域划分为先浇仓和后浇仓；步骤2：在各仓块预留先作预应力筋和后作预应力筋；至少张拉并约束先浇仓中先作预应力筋；步骤3：浇筑先浇仓混凝土；步骤4：待先浇仓混凝土放热膨胀，解除先作预应力筋两端约束；步骤5：待先浇仓混凝土收缩，张拉后作预应力筋；步骤6：浇筑后浇仓混凝土；在此前，张拉并约束后浇仓先作预应力筋；步骤7：待后浇仓混凝土放热膨胀，解除先作预应力筋两端约束；步骤8：对先浇仓与后浇仓进行闭合施工。所述施工方法降低了大体积混凝土膨胀和收缩时产生裂缝的风险，也因允许更大的分仓尺寸而提高了施工效率。
Mass concrete construction method combining warehouse jumping method and prestress technology
The invention discloses a mass concrete construction method combining a skip method and a prestress technology. The mass concrete construction method comprises the following steps that 1, a construction area is divided into a pre-pouring bin and a post-pouring bin based on the skip method; 2, pre-acting prestressed tendons and post-acting prestressed tendons are reserved in each bin block; at least tensioning and restraining pre-acting prestressed tendons in the pre-pouring bin; step 3, pouring pre-pouring bin concrete; 4, releasing constraints at the two ends of the pre-working prestressed tendon after the concrete in the pre-pouring bin is subjected to heat expansion; 5, after the concrete in the pre-pouring bin shrinks and is tensioned, prestressed tendons are used; 6, post-pouring bin concrete is poured; before, the post-pouring bin is tensioned and restrained to serve as pre-stressed tendons; 7, after the post-pouring bin concrete is subjected to heat expansion, constraint at the two ends of the pre-acting prestressed tendons is relieved; and 8, closing construction is conducted on the pre-pouring bin and the post-pouring bin. According to the construction method, the risk that cracks are generated during expansion and shrinkage of the mass concrete is reduced, and the construction efficiency is improved due to the fact that the larger bin dividing size is allowed.
本发明公开了一种结合跳仓法和预应力技术的大体积混凝土施工方法，包括以下步骤：步骤1：基于跳仓法将施工区域划分为先浇仓和后浇仓；步骤2：在各仓块预留先作预应力筋和后作预应力筋；至少张拉并约束先浇仓中先作预应力筋；步骤3：浇筑先浇仓混凝土；步骤4：待先浇仓混凝土放热膨胀，解除先作预应力筋两端约束；步骤5：待先浇仓混凝土收缩，张拉后作预应力筋；步骤6：浇筑后浇仓混凝土；在此前，张拉并约束后浇仓先作预应力筋；步骤7：待后浇仓混凝土放热膨胀，解除先作预应力筋两端约束；步骤8：对先浇仓与后浇仓进行闭合施工。所述施工方法降低了大体积混凝土膨胀和收缩时产生裂缝的风险，也因允许更大的分仓尺寸而提高了施工效率。
Mass concrete construction method combining warehouse jumping method and prestress technology
一种结合跳仓法和预应力技术的大体积混凝土施工方法
LIN SIXIN (author) / HUANG YONG (author) / ZHAO SHANPENG (author) / DENG LANYU (author) / MA ZHUANG (author) / LIN CHONGXIONG (author) / WANG PING (author) / LIU JINGWEN (author) / SU MAOSEN (author) / ZHU YINKAI (author)
2025-01-21
Patent
Electronic Resource
Chinese
IPC:
E04G
SCAFFOLDING
,
Baugerüste
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