建筑结构学报2026，Vol.47Issue(5)：44-56,13.DOI:10.14006/j.jzjgxb.2025.0566
3D打印混凝土球壳结构自支撑临界角及影响参数研究
Study on critical self-supporting angle and influencing parameters of 3D printed concrete spherical shell structures
摘要
Abstract
3D printing concrete offers advantages such as digital design and formwork-free layerwise fabrication,providing an innovative solution for the construction of curved architectural structures.However,its self-supporting capability of formwork-free fabrication,which depends on structural configuration and material properties,requires further investigation.This study focuses on 3D-printed concrete spherical shell structures.Mechanical properties of the printing material were characterized,and printing tests for the critical self-supporting angle under different parameter combinations,including shell diameter,number of printing strips,and arc-segment length,as well as finite element simulations,were conducted to reveal the variation patterns of self-supporting construction performance.The results show that spherical shells with full-length circular arc segments exhibit the highest self-supporting capacity because their closed circumferential sections provide higher stiffness and effectively resist deformation.Among segmented shells,the 1/3-arc-length configuration achieves a relatively stable critical self-supporting angle and better self-supporting performance.Increasing the number of printing strips enhances the stiffness of the spherical shell structure and prolongs the deposition time of concrete strips,thereby significantly reducing the critical self-supporting angle and improving the self-supporting capability of the spherical shell.Moreover,as the nominal length-to-thickness ratio increases,the critical self-supporting angle increases accordingly,leading to reduced self-supporting performance.关键词
球壳结构/3D打印混凝土/自支撑/临界角/影响参数Key words
spherical shell structure/3D printed concrete/self-supporting/critical angle/influencing parameters分类
建筑与水利引用本文复制引用
蒋友宝,刘艳,李骧,袁嘉仪,郑煜..3D打印混凝土球壳结构自支撑临界角及影响参数研究[J].建筑结构学报,2026,47(5):44-56,13.基金项目
湖南省自科基金重点项目(2026JJ30060),国家自然科学基金项目(52378126). （2026JJ30060）
