On-site construction method for sandwich composite wall

Abstract

The invention provides an on-site construction method for a sandwich composite wall. The on-site construction method for the sandwich composite wall comprises the following steps: (1) manufacturing a concrete external wall on an industrialized production line; compounding an insulating layer on the external wall; embedding a first casing pipe in the external wall body and the insulating layer; enabling a non-metallic connecting rod to penetrate the insulating layer, enabling a first anchoring body on the connecting rod to be placed in the external wall, and enabling a second anchoring body on the connecting rod to be located at the outer side of the insulating layer to form a two-layer composite wall; (2) transporting the two-layer composite wall to a construction site; arranging a template at the outer side of the insulating layer in the two-layer composite wall, and arranging a second casing pipe between the port of the first casing pipe and the template to form a cavity between the insulating layer and the template; (3) pouring concrete in the cavity for maintenance to form an internal wall; (4) removing a threaded rod and the template, and then, filling and leveling up the cavities of the casing pipes with the concrete to form the sandwich composite wall after the maintenance. According to the on-site construction method provided by the invention, compounding of the external wall and the insulating layer is finished during industrialized production, and pouring of the internal wall is finished at the construction site, so that the defects of the prior art are solved.

Description

technical field [0001] The invention relates to building walls, and relates to a field construction method for sandwich composite walls. Background technique [0002] At present, the sandwich composite building wall includes three layers, an outer wall, an insulation layer and an inner wall. The construction method is as follows: prefabricate the concrete outer wall, leave through holes during prefabrication, and pre-embed casings to install wall-through screw rods. The outer wall can act as an outer formwork during construction. During construction, scaffolding is set on the outside of the wall, and a support formwork is set on the inside of the wall. Screws are used to pass through the casing and formwork, and tightening is used on both sides of the wall. Firmware is tight. Install the prepared insulation layer on the inner side of the prefabricated outer wall, and then pour concrete on the inner side of the insulation layer to form an inner wall after curing. After curi...

AI Technical Summary

Problems solved by technology

Install the prepared insulation layer on the inner side of the prefabricated outer wall, and then pour concrete on the inner side of the insulation layer to form an inner wall after curing. After curing, remove the formwork and the wall-through screw to form a sandwich composite wall. The disadvantages of this construction are: It is necessary to fill all the through holes left on the outer wall and the insulation layer. Since there are many through holes on the wall, it takes more man-hours to complete the hole filling, and it needs to be waterproofed. At the same time, it takes more time to fill the holes. High technology and sense of responsibility often cause water to enter the wall due to improper handling. This is also one of the reasons for water seepage in the interior walls of many building walls. This kind of wall is extremely difficult to repair, especially when frost swelling occurs in winter. cracks and other phenomena are prone to occur, and in severe cases, the surface of the outer wall will fall off

The thermal insulation effect of the insulation layer is greatly reduced; there are many materials for setting up scaffolding, the operation of disassembling and assembling scaffolding is complicated, and the risk factor of working at heights outside the wall is high

At the same time, due to the poor structure of the connecting parts, cracks are prone to appear on the surface of the outer wall, and in severe cases, the outer wall skin will fall off.

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