Cable bent tower cross beam shrinkage crack control method, device and equipment and storage medium

• Main Authors: XIAN RONG, WANG WENYANG, XIE GUOWU, ZHANG MEILING, HU XIANHUI, TANG JIARUI, PENG XUMIN, WANG JUNWEN, CHEN ZHONGYU, WEI DONGSHENG, ZHANG JIAQI, DONG HAILEI, WANG KEBING, SUI JIALE
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: ASSEMBLY OF BRIDGES; CALCULATING; COMPUTING; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONTROLLING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; OR VIADUCTS; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

The invention discloses a cable bent tower cross beam shrinkage crack control method, device and equipment and a storage medium, and the method comprises the steps: obtaining the tensile stress generated by the shrinkage of a cable bent tower cross beam according to an established cable bent tower finite element model; determining a prestress control value of the cable bent tower cross beam according to the tensile stress, wherein the prestress control value is a negative value of the tensile stress; and the actual stress value of the cable bent tower cross beam is obtained, and whether the prestress steel strand is controlled to be tensioned or not is judged according to the size relation between the prestress control value and the actual stress value. The structure tensile stress generated in the shrinkage process of the beam concrete can be counteracted by tensioning the lower beam prestressing tendon in advance, the structure cracking risk is reduced, the number of times of structure pouring is reduced, t