Abstract: A wind tunnel test equipment using wind force integration includes: a structural model whose interior is empty; an internal support disposed inside the structural model; and load sensors disposed outside the internal support and coming into close contact with the inner surfaces of the structural model to measure aerodynamic forces applied to the structural model.

Abstract: A variable assembly PC member includes: a plurality of hollow PC modules, each of which has an upper flange and a lower flange spaced apart from each other, and a pair of webs connecting both ends of the upper flange and the lower flange to form a hollow therein; and connectors connecting the plurality of hollow PC modules with each other in the width direction.

Abstract: The present invention relates to a method for calculating a time history wind load in accordance with correlation, the method in which an artificial time history load close to reality can be generated without relying on a wind tunnel test, by applying the correlation between wind loads in two directions and adjusting the ratio of a maximum value of any one wind load relative to a maximum value of the other wind load.

Abstract: A self-supported PC column joint part. A plurality of accommodation pieces is buried in the upper surface of a lower member to which a PC column is to be joined, has accommodation spaces having open upper parts, and has female threads. A support bar is provided in a pocket formed in the lower end of the PC column, and includes a body coupled to the upper surface of the pocket to protrude and a head at the lower end of the body so as to be accommodated inside the accommodation space. A fixing piece has a through-hole formed in the center thereof such that the body of the support bar passes therethrough, and has threads formed on the outer peripheral surface thereof so as to be screw-coupled to the accommodation piece, thereby fixing the head of the support bar.

Abstract: A wind tunnel test equipment using wind force integration includes: a structural model whose interior is empty; an internal support disposed inside the structural model; and load sensors disposed outside the internal support and coming into close contact with the inner surfaces of the structural model to measure aerodynamic forces applied to the structural model.

Abstract: The present invention relates to a method and system for automatically calculating an artificial intelligence (AI)-based design wind speed, which capable of economically designing a structure by quickly and accurately calculating the design wind speed at a target point through relationship learning between the design target point and a neighboring weather observation station by AI.

Abstract: A self-supported PC column joint part. A plurality of accommodation pieces is buried in the upper surface of a lower member to which a PC column is to be joined, has accommodation spaces having open upper parts, and has female threads. A support bar is provided in a pocket formed in the lower end of the PC column, and includes a body coupled to the upper surface of the pocket to protrude and a head at the lower end of the body so as to be accommodated inside the accommodation space. A fixing piece has a through-hole formed in the center thereof such that the body of the support bar passes therethrough, and has threads formed on the outer peripheral surface thereof so as to be screw-coupled to the accommodation piece, thereby fixing the head of the support bar.

Abstract: A system for monitoring tension forces of tendons disposed inside a concrete structure in post-tensioning includes a hydraulic jack coupled to one tendon at one end of the concrete structure to apply the tension force to the tendon by means of the forward movement of a piston; a hydraulic pump connected to the hydraulic jack by means of a hydraulic pressure supply pipe to supply a hydraulic pressure to the hydraulic jack; a digital elongation length measurement sensor disposed on the hydraulic jack to measure the elongation length of the piston; a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server; a digital pressure measurement sensor disposed on the hydraulic pressure supply pipe of the hydraulic pump; and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate fo

Abstract: A system for monitoring tension forces of tendons disposed inside a concrete structure in post-tensioning includes a hydraulic jack coupled to one tendon at one end of the concrete structure to apply the tension force to the tendon by means of the forward movement of a piston; a hydraulic pump connected to the hydraulic jack by means of a hydraulic pressure supply pipe to supply a hydraulic pressure to the hydraulic jack; a digital elongation length measurement sensor disposed on the hydraulic jack to measure the elongation length of the piston; a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server; a digital pressure measurement sensor disposed on the hydraulic pressure supply pipe of the hydraulic pump; and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate fo

Abstract: A system for monitoring tension forces of tendons in post-tensioning includes a hydraulic jack to apply the tension force to the tendon, a hydraulic pump to supply a hydraulic pressure to the hydraulic jack, a digital elongation length measurement sensor to measure the elongation length of the piston, a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server, a digital pressure measurement sensor, and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate for the coefficient of elasticity of the tendon according to the ratio of the real-time elongation length data to the pressure data, and compensate for the tension force calculated.

Abstract: The present invention relates to a system for monitoring tension forces of tendons in post-tensioning that accurately measures the tension forces of the tendons and/or controls the tension forces introduced into the tendons through a main server, thereby allowing the tension forces to be applied uniformly to the tendons.