Casting and vibrating method and vibrating device during large-size concrete structure construction

Abstract

The invention discloses a casting and vibrating method during large-size concrete structure construction. Prefabricated cement pier bases with insertion holes are evenly arranged in gaps of constructional reinforcing steel bars of a concrete structure, a vibration reinforcing steel bar made of high-stiffness carbon steel is inserted into the insertion hole of each cement pier base, and the vibration reinforcing steel bars are connected into a whole to achieve the stable state through connection ribs; the top end of each vibration reinforcing steel bar is movably connected with an eccentric vibration rod; each vibration rod is connected to a corresponding vibrating motor through a flexible shaft; and when concrete is poured, all vibrating motor power sources are connected, all the vibration reinforcing steel bars generate vibration of the same frequency, vibration generated by each vibration reinforcing steel bar head is transferred to a whole framework of the vibration reinforcing steel bars, and accordingly the concrete around the vibration reinforcing steel bar framework is vibrated and compacted.

Description

technical field [0001] The present invention relates to building construction technology. Background technique [0002] In the construction of large-volume concrete structures (such as bridge piers and caps), it is necessary to vibrate in time after the concrete is poured to ensure compactness. The method adopted at present is traditional manual hand-held vibrator vibration, although this method has played the purpose of vibration to a certain extent, but also has the following three defects: [0003] First, due to the large volume of the concrete structure, it is difficult for the vibrating force to be transmitted to the deep part, resulting in the untimely vibrating of the deep part, so that the stones and cementitious materials inside the concrete will form bubbles that are not dense, affecting the quality of concrete pouring and the force path in the later stage. pose a threat to structural safety. [0004] Second, during the vibration process, sometimes the vibrating ...

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Problems solved by technology

[0003] First, due to the large volume of the concrete structure, it is difficult for the vibrating force to be transmitted to the deep part, resulting in the untimely vibrating of the deep part, so that the stones and cementitious materials inside the concrete will form bubbles that are not dense, affecting the quality of concrete pouring and the force path in the later stage. Hazards to structural safety

[0004] Second, during the vibration process, sometimes the vibrating rod touches the formwork, causing the formwork to deform, making the shape of the concrete structure fail to meet the design requirements

[0005] Third, when vibrating, pouring and vibrating in the area where the vibrating rod is located cannot be carried out at the same time, and the construction efficiency is low

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