Novel permanent and temporary combined prefabricated supporting structure

The novel permanent-temporary combined prefabricated supporting structure comprises a permanent-temporary combined prefabricated support, the structure of the permanent-temporary combined prefabricated support is in a cross shape, a longitudinal beam and a middle column connecting node are arranged in the middle of the permanent-temporary combined prefabricated support, and a bracket is arranged on the side face of the permanent-temporary combined prefabricated support and used for installing a prefabricated top plate and a prefabricated middle plate; the permanent and temporary combined prefabricated supports are connected with the prefabricated diaphragm walls on the two sides through the cast-in-place waist beams. While the foundation pit is supported, site construction at the main body back-building stage is facilitated, and the construction efficiency and quality are improved. 本实用新型公开了一种永临结合的新型预制支撑结构，包括永临结合预制支撑，所述永临结合预制支撑的结构呈"十"字形，其中部设有纵梁和中柱连接节点，其侧面设有牛腿，用于安装预制顶板和预制中板；所述永临结合预制支撑通过现浇腰梁与两侧的预制地连墙连接。本实用新型在实现基