Buildings and construction methods

Abstract

To provide a building and a construction method capable of adopting steel structure even when using an external wall produced by a 3D printer.SOLUTION: A building B of the invention has an external wall W that is formed of a plurality of self-supportable wall bodies 1 molded by a 3D printer 100 and a plurality of steel columns 3 erected inside the external wall W. The wall bodies 1 have a plurality of reinforcing bars 1e that are embedded during molding by the 3D printer 100 and bound to the steel columns 3. The construction method of the invention includes an external wall formation step to form the external wall W by placing the wall bodies 1 that are molded by the 3D printer 100 and self-supportable and have the plurality of reinforcing bars 1e on the foundation F, a steel column installation step to erect the steel columns 3 on the foundation F inside the external wall W formed in the external wall formation step, and a binding step to bind the reinforcing bars 1e previously embedded in the wall bodies 1 to the steel columns 3.SELECTED DRAWING: Figure 1

Claims

1. The exterior wall is formed from multiple self-supporting wall bodies created by extruding a cement-based mixed fluid using a 3D printer, and is placed on a foundation installed in the ground. It comprises a plurality of steel columns erected on the inside of the outer wall and connected to the foundation, The wall has multiple reinforcing bars that are embedded during the 3D printing process and are fastened to the steel columns. A building characterized by the following features.

2. The wall body has a bulging portion that protrudes outward from the outer wall and forms a recess on the inside that accommodates the steel column, The reinforcing bar is embedded in the bulging portion and protrudes into the recess. The building according to feature 1.

3. The aforementioned outer wall has a portion formed by overlapping the wall bodies vertically, The wall has through holes that penetrate in the vertical direction, The through-holes in the lower wall and the through-holes in the upper wall stacked above the lower wall are connected to each other vertically. Reinforcing bars for connecting the wall are inserted into the aforementioned through-holes, The system comprises mortar that is filled into the aforementioned through holes. The building according to feature 1.

4. The outer wall is provided with a filler that allows relative movement between adjacent wall bodies in the horizontal direction and fills the gaps between the wall bodies. The building according to feature 1.

5. An exterior wall formation process involves creating a wall structure using a cement-based mixed fluid injected by a 3D printer, which is self-supporting and has multiple reinforcing bars, and then placing it on a foundation installed in the ground to form the exterior wall. A steel column installation step involves erecting steel columns on the foundation inside the outer wall formed by the outer wall formation step, This includes a fastening step of fastening reinforcing bars, which are pre-embedded in the wall, to the steel columns. A construction method characterized by the following features.

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