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      仵鹏涛1 ,2 ,  谢智杰3

          ( 1 .  天津市建筑材料集团（控股） 有限公司 ，天津 300381 ;  2.  天津城建大学 土木工程学院 ，天津 300384 ;

         3 .  中建三局集团北京有限公司 ，北京 102600)

摘   要 ：为研究地聚物超高性能混凝土  ( GUHPC)   与钢筋的黏结性能 ，通过钢筋拉拔试验研究了钢筋与 GUHPC 的黏结性能 ，探讨了钢筋直径 、钢筋 类 型 以 及 混 凝 土 抗 压 强 度 等 参 数 对 黏 结 性 能 的 影 响 ，并 运 用 ABAQUS 软件 ，建立实体钢筋单元 ，使用 Python 二次开发 ，批量建立 Connector 单元 ， 同时考虑材料本构 ，并与 试验结果对比验证。研究表明：极限黏结强度随直径的增大而减小 ；GUHPC 黏结强度较普通地聚物混凝土受外 形影响更大 ；GUHPC 与钢筋具有更优秀的黏结性能 ；同时验证采用 Connector 单元模拟方法可以较为准确地模拟 钢筋和 GUHPC 黏结性能 ，发展曲线符合一般规律。

关键词：地聚物混凝土 ；钢筋 ；黏结滑移 ；数值模拟

中图分类号：TU528 . 41           文献标志码：A            文章编号： 1005- 8249  (2025)  03- 0001- 05

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .03 .001

             WU Pengtao1 , 2  ,  XIE Zhijie3

                      (  1 . Tianjin Building Construction Materials Group  (Holding)   Co . ,   Ltd. ,  Tianjin 300381 ,   China;

                        2. School of Civil Engineering ,  Tianjin Chengjian University ,  Tianjin 300384 ,  China;

                3 . China Construction Third Engineering Bureau Group Beijing Co . ,  Ltd. ,  Beijing 102600 ,   China)

Abstract：To investigate the bonding properties of geopolymer ultra-high performance concrete (GUHPC) with steel bars. The bonding properties of rebar and GUHPC have been studied through steel bar drawing tests. The influence of parameters such as steel bar diameter, steel bar type and concrete compressive strength on the bonding performance was discussed. ABAQUS software was used to establish solid steel bar units, and Python was used for secondary development to set up Connector units in batches. At the same time, the material constitutive was considered, and the experimental results were compared and verified. The results show that the ultimate bonding strength decreases with the increase of diameter. The bonding strength of GUHPC is more affected by the shape than that of ordinary polymer concrete. GUHPC has better bonding performance with steel bars. Meanwhile, it is verified that the Connector unit simulation method can simulate the bonding performance between reinforcing bars and GUHPC more accurately, and the development curve conforms to the general law.

Keywords: Geopolymer concrete; steel bar; bond behavior; numerical simulation

基金项目： 国家自然科学基金  (52308518) ;  天津科技企业特派员资助项目  (23YDTPJC00100) ;  天津市建筑结构防护与加固重点 实验室开放基金  (FHJG - 2024 - 03) 。

作者简介：仟鹏涛  (1989—) ,  男 ，博士 ，副教授 ，研究方向： 高性能与超高性能混凝土结构防护。

收稿日期：2024 - 12 - 25