Abstract：
After reconstruction of frame structure by column withdrawing and span enlargement, frame structure must be reinforced because its force bearing mode and load transfer of frame structure are changed obviously. In reinforcement and reconstruction of podium building of a logistics building, the original frame beam is reinforced through enlarging section, wrapping steel and adding steel beam at bottom. After structural force deformation test, it is found that the middle part of span-enlarged beam starts to bear sagging moment during column withdrawing, hogging moment is increased at base and flexibility at column withdrawing point is within the control requirement. Floor slab full area load piling test is carried out after column withdrawing and reinforcement, and it is found that deformation and force bearing capacity of beam and slab structure under the design load could satisfy the design requirement.
YANG Ren-hao. ANALYSIS ON FIELD TEST OF FRAME STRUCTURE REINFORCEMENT AND
RECONSTRUCTION BY COLUMN WITHDRAWING AND SPAN ENLARGEMENT[J]. Architecture Technology, 2015, 46(10): 891-893.
