Built-in back arris precast concrete formwork-removal-free hollow wall and construction technology

Abstract

The invention relates to the technical field of fabricated building engineering, in particular to a built-in back ridge precast concrete formwork-removal-free hollow wall and a construction technology. The prefabricated concrete non-dismantling hollow wall with the built-in back ridges comprises a prefabricated concrete single-face wall plate, a steel reinforcement framework, the non-dismantling built-in back ridges and a non-dismantling formwork, the prefabricated concrete single-face wall plate and the non-dismantling formwork are arranged in parallel, a wall body cavity is formed between the prefabricated concrete single-face wall plate and the non-dismantling formwork, and the steel reinforcement framework is arranged between the prefabricated concrete single-face wall plate and the non-dismantling formwork. One side of the steel reinforcement framework is pre-buried in the prefabricated concrete single-face wallboard, and the formwork-removal-free built-in back arris is arranged in a wall cavity and connected with the steel reinforcement framework and the formwork-removal-free formwork. The back ridges are internally arranged, the back ridges fix the non-dismantling formwork and are poured together with the wall body concrete, so that the concrete is not prone to cracking during pouring, the formwork expansion phenomenon is avoided, after the wall body is formed, the overall precision of the wall body is high, and the overall building can better meet the requirement for attractiveness.

Description

technical field [0001] The invention relates to the technical field of prefabricated construction engineering, in particular to a hollow wall with a built-in corrugated prefabricated concrete without demolition and a construction process. Background technique [0002] Prefabricated buildings are the basic components that make up buildings. They are prefabricated in factories and then transported to the construction site for assembly. It is one of the construction industrialization technologies that my country has vigorously promoted in recent years. Prefabricated hollow walls are more and more popular in the field of prefabricated construction engineering because of the continuous cavity, which is convenient for the connection of the stressed steel bars up and down, left and right. Formwork-free is an emerging formwork system for concrete pouring. After the formwork is set up, it is permanently poured together with the concrete and will not be disassembled. Formwork-free is...

AI Technical Summary

Problems solved by technology

[0003] The existing prefabricated concrete hollow wall structures include inverted and inverted forming hollow walls, paired forming hollow walls, and single-sided laminated formwork-free hollow walls. Among them, the inverted and inverted forming hollow walls have the following defects: special large-scale equipment is required, Carry out a 180° flip, that is, fix the formed A side wall stably, and then turn it over 180° as a whole and buckle it in the uncured B side wall concrete

This reverse insertion process requires that the tie bars must be arranged very densely, otherwise the forming accuracy is difficult to guarantee, and it is easy to cause the pouring mold to expand; at the same time, there are many tie bars in the cavity, which is invalid reinforcement, which is only a process requirement and wastes materials. serious

And because the aggregates such as sand and gravel in the concrete affect the insertion depth, it is difficult to control the forming accuracy; it cannot be fault-tolerant, and once the reverse insertion is formed, if it is found that the reinforcement is not accurate or the position of the pre-embedded pipeline is wrong, it is difficult to correct it; secondary maintenance is required. High energy consumption and low efficiency

Pair-forming hollow walls and single-sided laminated formwork-free hollow walls require special equipment, pair forming, and additional back corrugation; Bolt group and other processes, so the process is complicated, resulting in low production efficiency

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