Reinforcement cage for end member of shear wall, jig for making reinforcement cage and method for making reinforcement cage

A reinforcement cage, comprising:

• a plurality of reinforcement units, disposed along a first direction, each of the reinforcement units comprising:
• a first stirrup, which is substantially rectangular and comprises a first side, a second side, a third side and a fourth side, wherein the first side is opposite to the third side, and the second side is opposite to the fourth side;
• at least one second stirrup, configured to be connected to the first side and the third side of the first stirrup;
• and
• at least one third stirrup, configured to be connected to the second side and the fourth side of the first stirrup and being substantially perpendicular to and fixed to the at least one second stirrup;
• and
• a plurality of main bars, extending along the first direction, through the plurality of reinforcement units, and being fixed to the first side, the second side, the third side and the fourth side of the first stirrup of each of the plurality of reinforcement units;
• wherein the second stirrup of the reinforcement unit is a substantially rectangular structure formed by bending a single steel bar and comprises a substantially elongated rectangular structure therein, wherein two ends of the bent single steel bar respectively form a first hook and a second hook, and wherein the first hook is located at a corner of the rectangular structure and bent toward an inner side of the second stirrup, and the second hook is located within the elongated rectangular structure, wherein a bending direction of the first hook is different from a bending direction of the second hook;
• and
• wherein the first hook and the second hook of the second stirrup hook onto at least two of the plurality of main bars.

A reinforcement cage, comprising:

• a plurality of reinforcement units, disposed along a first direction, each of the reinforcement units comprising:
• a first stirrup, which is substantially rectangular and comprises a first side, a second side, a third side and a fourth side, wherein the first side is opposite to the third side, and the second side is opposite to the fourth side;
• at least one second stirrup, configured to be connected to the first side and the third side of the first stirrup;
• and
• at least one third stirrup, configured to be connected to the second side and the fourth side of the first stirrup and being substantially perpendicular to and fixed to the at least one second stirrup;
• and
• a plurality of main bars, extending along the first direction, through the plurality of reinforcement units, and being fixed to the first side, the second side, the third side and the fourth side of the first stirrup of each of the plurality of reinforcement units;
• wherein each of the reinforcement units further comprises a fourth stirrup and a fifth stirrup, wherein the fourth stirrup and the fifth stirrup connect the second side and the fourth side of the first stirrup.