Prefabricated box girder square steel pipe core die

• Main Authors: JIA FEN, ZHANG LIYE, KANG ZHIXIONG, JU ZHENWEI, LI WEN, ZOU XIAO, ZHANG ZHONG, YANG ZHIYUAN
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2018
• Subjects: PERFORMING OPERATIONS; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE

The invention discloses a prefabricated box girder square steel pipe core die which comprises a core die body, multiple supporting frames and multiple collecting and releasing type strengthening supporting frameworks. The core die body is a hollow octagonal prism formed by multiple square steel pipes in a surrounding manner. The multiple supporting frames and the multiple collecting and releasingtype strengthening supporting frameworks are arranged in the hollow part of the core die body at intervals in the length direction of the core die body. The supporting frames and the collecting and releasing type strengthening supporting frameworks are arranged in a cross manner. Each supporting frame comprises an upper steel bar, a rightwards and upwards inclined steel bar, a right steel bar, a rightwards and downwards inclined steel bar, a lower steel bar, a leftwards and downwards inclined steel bar, a left steel bar and a leftwards and upwards inclined steel bar, all of which are sequentially connected end to end