Displacement monitoring device for deep foundation pit supporting structure

The utility model provides a displacement monitoring device for a deep foundation pit supporting structure. The displacement monitoring device comprises a sheet pile, a frame body arranged on the sheet pile and a monitoring element. The monitoring element is used for acquiring position parameters; the frame body is used for arranging the monitoring element on a sheet pile; the frame body adopts a split type design and comprises an upper frame body and a lower frame body; the lower frame body is detachably arranged on the sheet pile; the upper frame body is detachably arranged on the lower frame body; a monitoring element is detachably arranged on the upper frame body; the device is detachably arranged on the sheet pile, more time and labor are saved in the laying process of monitoring point positions, and the device is particularly suitable for large-scale deep foundation pit monitoring projects with the fast construction rhythm and the multiple monitoring point positions; in addition, after measurement is fi