Deformation joint drainage structure and construction method adopting deformation joint drainage structure

The invention discloses a deformation joint drainage structure and a construction method adopting the deformation joint drainage structure. The deformation joint drainage structure comprises a structure bottom plate, a drainage device and a terrace. The structural bottom plate is provided with a structural joint. The drainage device is provided with a drainage groove body, the drainage groove body has a preset length, any section of the drainage groove body in the width direction of the drainage groove body is of a concave structure, and the two sides of the drainage groove body in the width direction of the drainage groove body are fixed to the two sides of the structural joint in a sealed mode respectively. The terrace is located above the structural bottom plate and covers the drainage device, the terrace is provided with a gap, the gap and the structural gap are located on the same vertical plane, and the gap is filled with the filling material. According to the drainage structure, the drainage device is