A construction method for fixing steel inner molds at horizontal construction joints of pipe gallery

Abstract

The invention belongs to the field of building construction, and particularly relates to a pipe gallery horizontal construction seam steel inner formwork fixing construction method. A bottom plate, asteel inner formwork fixing device and a steel inner formwork are included, a pre-buried steel bar head is pre-buried in the bottom plate when a bottom plate waterproof protection layer is poured, after bottom plate bottom bars are bound, the steel inner formwork fixing device is welded to the pre-buried steel bar head, a fixing rod is welded to the steel inner formwork fixing device, a thread isarranged at the upper end of the fixing rod, and the fixing rod is in threaded connection with two iron sheets; after the bottom plate and wall steel bars are bound, the steel inner formwork is hoisted onto the iron sheets of the steel inner formwork fixing device to be fixed, after the bottom edge of the steel inner formwork is placed on the lower iron sheet, the upper iron sheet is screwed, andthus the steel inner formwork is stable and reliable; and the steel bars can be effectively protected against deforming, the thickness of a steel bar protection layer can be effectively guaranteed, use of split bolts is further avoided, and the structure waterproof effect is reinforced while the concrete impression is improved.

Description

Technical field [0001] The invention belongs to the field of building construction, and specifically relates to a method for fixing a steel inner mold for horizontal construction of a pipe gallery Background technique [0002] It is well known that the main body of the underground pipe gallery cannot be formed at one time, so a horizontal construction joint will be left on the side wall of the pipe gallery. The approximate position is basically close to 150mm-300mm of the floor surface. To ensure the waterproof effect of the pipe gallery, the construction will be horizontally constructed along the pipe gallery. Install water-stop steel plates at the joints and add a waterproof reinforcement layer after the main body is formed. If the horizontal construction joints are improperly handled, during the construction of the upper wall, there will be phenomena such as expansion, flow, and dislocation, which will affect the quality of concrete construction And the normal process of subse...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the main body of the underground pipe gallery cannot be formed at one time, so a horizontal construction joint will be left on the side wall of the pipe gallery. The general position is basically close to the bottom surface of 150mm-300mm. In order to ensure the waterproof effect of the pipe gallery, it will be constructed horizontally along the pipe gallery Install water-stop steel plates at the joints and add a waterproof reinforcement layer after the main body is formed. If the horizontal construction joints are not handled properly, there will be mold expansion, flow, and misplacement during the construction of the upper wall, which will affect the construction quality of the concrete. and the normal operation of subsequent processes

The previous practice was to remove the formwork after the construction of the lower concrete wall, and support the upper wall formwork according to the conventional method. The horizontal construction joints were not reinforced firmly, which caused the above problems, or the lower wall formwork was not removed, and the upper formwork was continued. Installation and construction, such a one-time investment in formwork is large, and turnover cannot be carried out

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