Device and method for measuring lateral deflection of spherical hinge loading cross section isotropic axial compression member

The invention relates to a device and method for measuring lateral deflection of a spherical hinge loading cross section isotropic axial compression member. The measuring device comprises a pluralityof measuring point devices, wherein the measuring point devices comprise a rigid base, a rigid support, a flat plate and an elastic rubber band; the rigid base is matched with a curve shape size of across section of the axial compression member; hooks or hanging plates are arranged on two sides of the rigid base; the axial compression member is wound on the elastic rubber band in a circumferencedirection of the cross section, and the elastic rubber band is connected with the hooks or hanging plates on the two sides of the rigid base; the rigid support is connected with the rigid base and theflat plate; one end of the rigid support is vertically connected to a center line of the base, and the other end of the rigid support is vertically connected with a center line of the flat plate; theflat plate is connected with