Prestressed concrete construction device for construction engineering

Abstract

The invention discloses a prestressed concrete construction device for construction engineering, which comprises an abutment surface, a left pedestal is arranged at the left end of the top surface of the abutment surface, a fixed-end anchor is arranged on the left side of the left pedestal, and the top surface of the abutment surface The right end is provided with a right pedestal; the left end of the prestressed tendon is fixed with the left pedestal through the cooperation of the fixed end anchor and the tension tendon connector, and the right end of the prestressed tendon is fixed through the cooperation of the automatic locker and the tension tendon connector. It is fixed together with the right pedestal, and the automatic locker is connected with the movable beam through the stopper. The connection method is simple and convenient, and no special processing is required at the end of the prestressed tendon. The construction method is simpler and the construction cost is reduced. , through the cooperation of the automatic locker and the right pedestal, the stretched prestressed tendons are automatically locked, no manual operation is required, time and effort are saved, and the practicability of the prestressed concrete construction device in this construction project is improved.

Description

technical field [0001] The invention relates to the field of construction engineering prestressed concrete construction devices, and more specifically relates to a construction engineering prestressed concrete construction device. Background technique [0002] Prestressed concrete is to make up for the phenomenon of premature cracks in concrete. Before the component is used, the concrete is pre-stressed in advance, that is, in the tension area of ​​​​the concrete, the steel bar is stretched by artificial force, and the steel bar is used. The retraction force makes the concrete tensile area pre-stressed. This stored pre-stress, when the component bears the tensile force generated by the external load, first offsets the pre-stress in the concrete in the tensile area, and then increases with the load. The concrete is stretched, which limits the elongation of the concrete and delays or avoids the appearance of concrete cracks. This is called prestressed concrete. There are two w...

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Problems solved by technology

[0003] Existing prestressed concrete construction devices for construction projects are composed of abutment surfaces, left and right pedestals, movable beams, jacks, anchors at fixed ends, tendon connectors, nuts, pull rods, etc. The fixed end anchor is installed on the tie rod in the left pedestal, the nut thread is sleeved on the tie rod in the right pedestal, the prestressed tendon is connected with the end of the tie rod through the tension tendon connector, and the tie rod in the right pedestal is movably interspersed in the movable The jack is fixedly installed between the right pedestal and the movable beam. When in use, use the jack to push the movable beam to move to the right, and then the movable beam pulls the prestressed tendon through the nut and the pull rod. After the tension reaches the requirement, manually turn the nut on the pull rod, and use the cooperation between the nut and the right pedestal to lock the prestressed tendon to complete the pulling work of the prestressed tendon, but it is necessary to process the thread head at the end of the prestressed tendon Or weld the baffle, and use the cooperation between the threaded head and the threaded sleeve or the cooperation between the baffle and the buckle to realize the connection between the tie rod and the prestressed steel bar. The construction method is relatively complicated and the construction cost is high. At the same time, when the prestressed tendon reaches the target tension It is time-consuming and labor-intensive to manually lock the prestressed tendons, so it is urgent to design a prestressed concrete construction device for construction projects

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