Construction technology of main pier bearing cap

Abstract

The invention discloses a construction technology of a main pier bearing cap, which comprises the following steps: (1) the main pier bearing cap is poured three times, and the concrete bottom layer ispoured; B, pour that concrete intermediate layer; (c) pour that upper layer of concrete; (2) temperature control construction; Includes real-time monitoring the internal temperature of concrete in the three concrete pouring processes, and timely cooling by cooling water after concrete pouring; (3) Thermal insulation curing After concrete pouring is finished, water storage thermal insulation curing or covering thermal insulation and moisture-preserving material thermal insulation curing shall be adopted. The invention can carry out real-time monitoring on the concrete internal temperature in the pouring process, timely grasp the concrete internal temperature field situation, and timely carry out internal temperature reduction through a cooling water system, thereby reducing the risk of concrete cracking and improving the construction quality.

Description

technical field [0001] The invention relates to a construction technology for a cap, in particular to a construction technology for a cap of a main pier. Background technique [0002] The main piers of the bridge are basically pile groups or caissons. For bridges with multi-pile caps, for aesthetic reasons, the bottom of the caps is usually placed below the normal water level. Since the construction water level is lower than the normal water level, if the caps are completely Above the construction water level, the construction can be carried out according to the conventional method; if a part of the cap is underwater, the method of steel casing is usually used for construction. However, the entire bearing platform is below the water surface during construction, and the volume of the bearing platform is relatively large, so steel casings are generally used for construction; the bearing platform is a typical large-volume concrete structure, and it is difficult to control the t...

AI Technical Summary

Problems solved by technology

However, the entire bearing platform is below the water surface during construction, and the volume of the bearing platform is relatively large, so steel casings are generally used for construction; the bearing platform is a typical large-volume concrete structure, and it is difficult to control the temperature of the concrete during construction. There is a risk of concrete cracking, slow construction efficiency and poor quality

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