Abstract: A new precast concrete column–foundation connection using pentagon bolted couplers (PBCs) was developed for rapid assembly and reliable force transmission. In the PBCs, the upper steel bar was plug-welded to the steel shoe, ...

Abstract: Red clay is a special soil that loses water and shrinks easily, which causes expansion and contraction and leads to the generation and development of cracks, weakening the strength and engineering properties of the soil. ...