Safe and reliable construction system for replacing columns by holding beams

The utility model discloses a safe and reliable construction system for replacing columns by holding beams which comprises a plurality of supporting structures for replacing columns by holding beams, a computer, a static strain testing instrument and a plurality of strain gages. The supporting structures for replacing columns by holding beams comprise supports, bases, jacks and dial indicators. The bases are arranged on the ground, the jacks are arranged on the bases, and the supports for supporting beams are arranged on the jacks. The dial indicators used for measuring the supporting and jacking quantity are arranged on the bases. The strain gages are arranged on the outer walls of the supports, each strain gage is connected with the static strain testing instrument through a corresponding signal line, and the static strain testing instrument is connected with the computer. According to the system, column loads are completely borne by the supporting structure in the construction of replacing columns by holding beams, and deformation of the beams is precisely controlled. Meanwhile, in the column load unloading process, the stress of the supporting structure can be monitored in real time, and the supporting structure can be in a safe state all the time. In the construction process, the system is clear in stress, deformation of the beams is controllable, and the construction process is safe and reliable.