Cable-supported dome structure without circumferential cable and tensioning construction method

Abstract

The application discloses a ring-cable-free cable-supported dome structure and a tensioning construction method. The ring-cable-free cable-supported dome structure comprises a ring truss, a single-layer net shell, a hub node and a cable. The cable is connected between the single-layer net shell and the ring truss. A fixed node is arranged between the single-layer net shell and the ring truss. The fixed node is fixed with a cable ear plate one. A cast steel piece is arranged at a middle position of the single-layer net shell. A bottom of the cast steel piece is provided with a cable ear plate two. The cable is fixed between the cable ear plate one and the cable ear plate two. The bottom of the hub node is fixedly connected with a support structure. The bottom of the support structure is fixed with a connecting ear plate one. The connecting ear plate one acts on the cable, so that the cable forms a folding point. The tensioning prestress loss of the cable caused by the interior of the node and the end of the node is avoided. The effective transmission of the tensioning prestress is realized. The stiffness and the bearing capacity of the overall structure reach the design value.

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