Prefabricated column pier and post-poured strip-shaped foundation beam assembly integral construction method

Abstract

The invention discloses a prefabricated column pier and post-poured strip-shaped foundation beam assembly integral construction method. A prefabricated column pier and a post-poured strip-shaped foundation beam are arranged, and first joint reinforcing steel bars used for being connected with longitudinal load-bearing reinforcing steel bars of an upper frame column upwards extend out of the top of the prefabricated column pier are also arranged. Second joint reinforcing steel bars and third joint reinforcing steel bars which are used for connecting longitudinal load-bearing reinforcing steel bars of rib beams of the post-poured strip-shaped foundation beam and wing plate distribution reinforcing steel bars extend out of the side surface of the prefabricated column pier. During construction, the prefabricated column pier is placed at a preset column position, and extension of first joint reinforcing steel bars and frame structure construction of a first structural layer are performed. Extension of the second joint reinforcing steel bars and the third joint reinforcing steel bars of the prefabricated column pier is timely and synchronously performed while an upper structure is constructed, concrete is poured, then a strip-shaped foundation beam is poured, and the structure is further upwards extended. The crossed strip-shaped foundation with large space rigidity is formed through post-pouring of the strip-shaped foundation beams, and the crossed strip-shaped foundation bears the structural dead weight and construction load continuously extending upwards, so that the purpose of saving the construction period is achieved.

Description

technical field [0001] The invention relates to the field of building construction, and is particularly suitable for an integral construction method for assembling prefabricated column piers and post-cast strip-shaped foundation beams for basements without attached buildings. Background technique [0002] The strip foundation under the column refers to the reinforced concrete strip foundation arranged in one direction or two directions, also known as beam foundation or foundation beam. Its cross-section is composed of a rib beam and wing plates protruding laterally. Since the girder girder is relatively high in height and equipped with a certain number of longitudinally stressed steel bars and stirrups, and the bottom of the wing plate is provided with transverse bending steel bars and steel bars distributed in the wing plate, it has greater shear, bending and Punching capacity, so it is often used in situations where the load is large and the bearing capacity of the founda...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the reliability of foundation engineering and superstructure, except for some pile foundations (including prefabricated wooden piles, steel pipe piles, prefabricated concrete pipe piles and prefabricated concrete square piles, etc.) In addition to being transported to the construction site for construction, most of the reinforced concrete foundations are constructed on the construction site with reinforcement binding and cast-in-place concrete. The superstructure can only be constructed after the strength of the foundation concrete reaches the predetermined strength. And maintenance time is longer, so it is not conducive to achieve the purpose of shortening the construction period

[0005] In view of the following shortcomings of the commonly used cast-in-place reinforced concrete foundations (especially strip foundations) in foreign countries: ①The construction of reinforced concrete foundations on the construction site requires a long period of maintenance, which is not conducive to shortening the construction period. Immediately bear the self-weight and construction load of the continuously extending building structure, so it cannot work in parallel with the construction of the superstructure; ②The construction of the on-site foundation project requires more formwork and a large number of construction workers, which is not conducive to the realization of rapid installation of building industrialization; ③ The construction of foundation works is carried out in the open air, is affected by weather and natural environment bigger, easily prolongs the construction period because of weather reason; Such as publication number is the strip foundation under the column of CN210946872U and publication number is the method for a kind of strip foundation local reinforcement of CN110080264A The above problems exist in both

In order to solve the above problems, the present invention provides an integral construction method for the assembly of prefabricated column piers and post-cast strip foundation beams to solve the problem of slow construction progress and long construction period

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