Wind turbine tower structure with stacked tower sections

A tower structure, comprising:

• a plurality of stacked tower sections, wherein at least one tower section of the plurality of stacked tower sections comprises:
• a wall element comprising one or more printed layers formed of concrete;
• and
• a base supporting thereon the one or more printed layers;
• a fixed lift connection element for detachably engaging with a lifting device during stacking of the plurality of stacked tower sections, the fixed lift connection element integral to at least the wall element, the fixed lift connection element comprising a surface holding thereon the one or more printed layers of the wall element,
• wherein the base comprises a top side comprising a first alignment element and the wall element comprises a second alignment element, the first alignment element of the base aligning with the second alignment element of the wall element,
• wherein the second alignment element of the wall element is at least a top layer of the one or more printed layers,
• wherein the first alignment element of the base comprises a cavity receiving at least the top layer of the one or more printed layers of the wall element, and
• wherein at least the top layer of the one or more printed layers is a formed portion of the wall element, the cavity receiving the formed portion of the wall element.

A method of assembling a tower structure, the method comprising:

• forming a mold of poured concrete or cast material;
• forming a base of poured concrete or cast material, the base defining a top side having a first alignment element;
• forming a plurality of tower sections using the mold;
• and
• stacking the plurality of tower sections on top of the base to form the tower structure;
• wherein forming the plurality of tower sections comprises:
• printing and depositing one or more printed layers on a top side of the mold to form a wall element, the top side of the mold comprising an alignment mold such that the wall element printed and deposited thereon comprises a second an alignment element, the first alignment element of the base aligning with the second alignment element of the wall element, wherein the second alignment element of the wall element is at least a top layer of the one or more printed layers, wherein the first alignment element of the base comprises a cavity, and wherein at least the top layer of the one or more printed layers is a formed portion of the wall element;
• and
• installing a lift connection element on the wall element;
• wherein stacking the plurality of tower sections to form the tower structure comprises:
• lifting, via the lift connection element, each of the plurality of tower sections;
• aligning the first alignment element of the base with the second alignment element of the wall element;
• and
• stacking the at least one tower section on the adjacent tower section by placing the formed portion of the wall element within the cavity of the first alignment element of the base.