Limited slippage connection structure and construction method of connection structure: Fid-Bau Portal

Limited slippage connection structure and construction method of connection structure

NIE XIN / ZHUANG LIANGDONG / ZHAO YUPENG

The invention relates to the technical field of structural engineering and discloses a connecting structure with limited slippage and a construction method of the connecting structure, the connecting structure with limited slippage comprises a precast slab, a concrete slab, a welding stud and a flexible sleeve, the concrete slab is arranged on the precast slab, the welding stud is located in the concrete slab, and the flexible sleeve is arranged on the precast slab. The welding stud comprises a stud column and a stud head arranged at one end of the stud column, the other end of the stud column is connected with the prefabricated slab, and the stud column is sleeved with the flexible sleeve. The connecting structure with limited slippage can provide proper slippage, effectively reduce the tensile stress of the concrete slab and improve the long-term performance and durability of the concrete slab. Meanwhile, the connecting structure with limited slippage further has an anti-lifting effect to resist separation and lifting of the concrete slab, shear force sudden increase of a part of sections caused by excessive release of the combination effect is reduced, and the stress state of the concrete slab of the transition section is improved.

本发明涉及结构工程技术领域并公开一种有限滑移的连接构造和连接构造的施工方法，所述有限滑移的连接构造包括预制板、混凝土板、焊钉和柔性套，所述混凝土板设在所述预制板上，所述焊钉位于所述混凝土板内，所述焊钉包括钉柱和设在所述钉柱的一端的钉头，所述钉柱的另一端与所述预制板相连，所述柔性套套设在所述钉柱上。所述有限滑移的连接构造能够可以提供适当的滑移量，有效减小混凝土板的拉应力，改善混凝土板的长期性能和耐久性。与此同时，该有限滑移的连接构造还具有防掀起作用以抵抗混凝土板的分离和掀起，并降低过度释放组合作用导致的部分区段剪力突增，改善过渡段混凝土板的受力状态。

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