Compressive Performance of 3D Printed Topology Optimized Concrete Foundation
JIANG Youbao
GAO Pengxiang
ZHANG Mingliang
ZHOU Zhixuan
GE Chang
Abstract：An in-depth study was conducted on the compressive performance of 3D printed topology optimized concrete foundations by combining experiments and finite element analysis(FEA).The variable density method was adopted for the topology optimization design of rectangular isolated concrete foundations,foundation specimens were fabricated via 3D printing technology,and axial compression tests,eccentric compression tests,and FEA were carried out.The results show that significant differences exist in the failure crack patterns between 3D printed topology optimized concrete foundation specimens and cast-in-place foundation specimens:under axial compression,bending cracks,punching inclined cracks,and polygonal line cracks appear;under eccentric compression,only bending cracks and punching inclined cracks occur.This type of foundation exhibits excellent bearing performance:when its volume is 30%of that of the cast-in-place foundation specimen,the ultimate bearing capacity decreases by only about 25.0%;when the eccentricity increases from 1/30 to 1/5 of the foundation width,the ultimate bearing capacity decreases by approximately 31.9%.
Keywords：3D printingconcrete foundationcrack developmentcompressive performancefinite element analysis
Publication Date：2026-02-28
Online Publishing Date：2026-04-07(First online date of this platform, not the publication date of the document)
Pages：12( 211-222 )