Prestressed fish-bellied foundation pit steel support structure

• Main Authors: ZHU LUMIN, YE JUNHUI, ZHANG ZHIWEI, YU BAIXIAN, WEI DONG, NI HONGLIANG, BI PINGJUN, ZHENG SHAOHE
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention relates to the technical field of foundation pit supporting, in particular to a prestress fish-bellied foundation pit steel supporting structure which comprises a prestress fish-bellied beam, loading devices used for tensioning steel strands are arranged at the two ends of an upper chord of the prestress fish-bellied beam, and each loading device comprises a loading driving piece and a winding reel. An output shaft of the loading driving piece is coaxially and fixedly connected with the winding reel, the end of the steel strand penetrates through the winding reel and is connected with a fastening pin, the fastening pin abuts against the circumferential side wall of the winding reel, and the winding reel is used for winding the steel strand; and wire locking devices for clamping the steel strands are further arranged at the two ends of the upper chord of the prestressed fish-belly sill. The prestressed fish-belly sill has the effects that tension adjustment can be conveniently conducted on the st