Bamboo joint type is drawn and is dug basis

The utility model discloses a bamboo joint type is drawn and is dug basis, which comprises a column, characteristics are that an organic whole is provided with a plurality of heads that expand on the stand, expand round platform deformation slope section and the cylindrical substrate holder of head including a body coupling, is the side slope slope that becomes the slope section into 0.5 1.5 doubly, is substrate holder 's diameter for founding column diameter's 1.2 2 doubly, is substrate holder 's height for founding column diameter's 0.1 0.3, is the top that becomes the slope section to last one perpendicular distance who expands the substrate holder bottom of head into founding column diameter's 1.2 2 doubly, be provided with the cylindrical hollow section that is used for backfilling earth in the stand, the advantage is increase level and vertical bearing capacity, what can reduce to draw the formula of digging basis expands the bottom width degree, reduce manual excavation's risk, and the shear failure ab