A construction method for caps in the range of prefabricated columns

Abstract

The invention discloses a prefabricated prefabricated column within the scope of a cap construction process, relates to the field of bridge engineering construction, including the following steps: S1: base cleaning and cushion construction, positioning and setting out the prefabricated column pre-embedded steel cage edge line and A number of anchor bolts are pre-embedded evenly on the outside, and the anchor bolts are poured into the cushion; S2: For the construction of the cap reinforcement, an octagonal reinforcement positioning device is welded with angle steel, and the bound reinforcement cage is hoisted above the reinforcement positioning device. The surroundings of the pre-embedded reinforcement cage are welded and fixed with oblique-stayed reinforcement; S3: Control the accuracy of the pre-embedded reinforcement on the cap, and use a limit formwork to control the relative position of the pre-embedded reinforcement on the top surface of the prefabricated column pre-embedded reinforcement; The steel pipe and the jack support the limit formwork, and the end of the steel pipe is supported on the steel formwork standing outside the cap. The construction method has the advantages of simple construction process, convenient determination of construction columns, good stability, economical cost savings, and less impact on the surrounding environment.

Description

technical field [0001] The invention relates to the field of bridge engineering construction, in particular to a construction process method for a bearing platform within the range of prefabricated columns. Background technique [0002] At present, in the construction of urban bridges, the cap is the connection part between the pile and the column or pier, and the cap connects several, even dozens of piles together to form a pile foundation. Caps are divided into high pile caps and low pile caps: low pile caps are generally buried or partially buried in the soil, high pile caps are generally exposed to the ground or water surface; high pile caps have a free length, There is no supporting body around it to jointly bear the horizontal external force, and the stress of the foundation pile is extremely unfavorable. The internal force and displacement of the pile body are larger than that of the low pile cap under the same horizontal external force, and its stability is worse tha...

AI Technical Summary

Problems solved by technology

Caps are divided into high pile caps and low pile caps: low pile caps are generally buried or partially buried in the soil, high pile caps are generally exposed to the ground or water surface; high pile caps have a free length, There is no supporting body around it to jointly bear the horizontal external force, and the stress situation of the foundation pile is extremely unfavorable. The internal force and displacement of the pile body are larger than that of the low pile cap under the same horizontal external force, and its stability is worse than that of the low pile cap. When the cap is buried deep, necessary protective measures should be taken for adjacent buildings and municipal facilities, and the position of the column is not easy to determine, the construction process is more complicated, and the construction cost is greatly increased

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