Reinforcement research of a built project due to functional transformation

Abstract

Abstract According to the functional requirements, the construction unit intends to dismantle the 7/B and 8/B columns of the first to second floors of a Renovation of an existing project. The force of the structure has changed after the demolition, and the structure needs to be strengthened.In this paper, 7/AC and 8/AC beams of Negative third floors are reinforced with an enlarged section. After the section is enlarged, the negative moment reinforcement of adjacent beams 7/C-D and 8/C-D do not meet the requirements. The two beams has being enlarged the section at the upper part. Due to the large cross-sectional area of the beam after reinforcement, in order to form a strong column weak beam, the beam lower column 7/A, 8/A, 7/C, 8/C is strengthened by the enlarged section method, and the section is enlarged to make the column line stiffness Greater than the beam line stiffness.The carbon fiber sheet is pasted for reinforced with the beam-slab members in the range of 6-7/A-C and 8-9/A-C. According to the experience calculation, the reinforcement effect is better and meets the requirements of the force.