Reinforced concrete structure joint including smart memory alloy bars and method of manufacturing the same

A method of forming a reinforced concrete structure, comprising:

• forming a first formwork for a first structural member;
• forming a second formwork for a second structural member, the second formwork intersecting the first formwork and extending in a different direction than the first formwork;
• disposing at least one first metallic reinforcement member in the first formwork;
• disposing plurality of second metallic reinforcement members in the second formwork, the plurality of second metallic reinforcement members extending in a length direction of the second formwork, wherein the plurality of second metallic reinforcement members includes a smart memory alloy along at least a portion of a length thereof;
• disposing at least one third metallic reinforcement member in the second formwork, the at least one third metallic reinforcement member extending in the length direction of the second formwork;
• pouring concrete in the first formwork;
• and
• pouring concrete in the second formwork,
• wherein, in a lateral cross-section of the second formwork, taken along a portion of the second formwork that extends adjacent to the first formwork or at a distance from the first formwork, ratio R applies,
• wherein
• R
• =
• A
• B
• ,
• wherein A equals a sum of a cross-sectional area of the plurality of second metallic reinforcement members and a cross-sectional area of the at least one third metallic reinforcement member, and
• B equals the cross-sectional area of the at least one third metallic reinforcement member, and
• wherein R ranges from about 3 to about 3.3,
• wherein the plurality of second metallic reinforcement members and the at least one third metallic reinforcement member are arranged in a first group of reinforcement members and in a second group of reinforcement members,
• wherein the second group of reinforcement members includes:
• a third one and a fourth one of the plurality of second metallic reinforcement members;
• and
• a second one of the at least one third metallic reinforcement member,
• wherein, in the lateral cross-section of the second formwork, ratio R2 applies,
• wherein
• R
• ⁢
• 2
• =
• A
• ⁢
• 2
• B
• ⁢
• 2
• ,
• wherein A2 equals a sum of a cross-sectional area of the third one of the plurality of second metallic reinforcement members, the fourth one of the plurality of second metallic reinforcement members and the second one of the at least one third metallic reinforcement member, and
• B2 equals a cross-sectional area of the second one of the at least one third metallic reinforcement member, and
• wherein R2 ranges from about 3 to about 3.3,
• wherein the concrete poured in at least one formwork selected from the group consisting of the first formwork and the second formwork for forming at least one selected from the group consisting of a first concrete body of the first structural member and a second concrete body of the second structural member, is a lightweight concrete mix, said lightweight concrete mix including:
• 410 kg/m3 cement;
• 420 kg/m3 lightweight coarse aggregate;
• 420 kg/m3 lightweight fine aggregate;
• 240 kg/m3 silica sand;
• 260 kg/m3 water;
• and
• 8 kg/m3 Superplasticizer.