Lateral displacement resisting horizontal supporting structure for post-cast strip of super high-rise underground wall

The invention provides a lateral displacement resisting horizontal supporting structure for a post-cast strip of a super high-rise underground wall. The lateral displacement resisting horizontal supporting structure comprises an outer wall, frame columns and a top plate installed on the outer wall and the frame columns. The structure further comprises a post-cast strip and a supporting structure installed on the post-cast strip, the supporting structure comprises a mother plate, an inserting plate and a locking piece, an inserting groove is formed in the mother plate, the inserting plate partially extends into the inserting groove and is locked through the locking piece, and the supporting structure tightly abuts against the two sides of the post-cast strip. According to the scheme, the inserting groove is formed in the mother plate, the mother plate and the inserting plate are placed into the post-cast strip after the inserting plate is inserted into the mother plate, then the inserting plate and the mother