Large-span high-speed railway steel-concrete composite beam cable-stayed bridge girder linear one-time forming high-precision construction method

• Main Authors: ZHOU RENZHONG, WU XIAODONG, WENG FANGWEN, LUO CHANGWEI, ZHENG JIANXIN, MU WENJUN, HUANG CAN, ZHU HAO, LIU YANG
• Format: Patent
• Language: Chinese; English
• Published: 15.08.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a large-span high-speed railway steel-concrete composite beam cable-stayed bridge girder linear one-time forming high-precision construction method which comprises the following steps: S1, establishing a bridge construction control finite element model, the determined manufacturing geometric parameters comprise the unstressed length L0 of the inhaul cable, the compression compensation amount L1 of a side span steel beam, the compression compensation amount L of the length L of a middle span steel box beam, a main tower pre-lifting beam H and the pre-throwing amount D when a main beam is erected; s2, steel box girders and stay cables are manufactured and machined according to geometric parameters, a concrete main tower is constructed, steel-concrete composite beams are erected, and midspan closure is conducted; s3, second-stage pavement is constructed, and at the moment, the line shape of the main beam is a finished bridge line shape; and S4, the finished bridge line shape and cable for