万博体育bet 土木工程学院方海教授团队在国际权威学术期刊《Engineering Structures》（中科院二区TOP期刊，IF=5.582）上发表题为“Compressive behaviour of concrete-filled multi-cell GFRP pultruded square columns reinforced with lattice-webs”的研究论文。2019级博士研究生杨来运为该论文的第一作者，方海教授为通讯作者。该项研究得到了国家自然科学基金（编号：52078248，52208252）的资助。

Compressive behaviour of concrete-filled multi-cell GFRP pultruded square columns reinforced with lattice-webs

Laiyun Yang, Hai Fang*, Honglei Xie, Benben Li

Abstract：

Experimental studies have generally confirmed the good mechanical performance of the pultruded tubes, while brittle buckling failure and low confining efficiency are still the problems to be addressed. Against this background, a concrete-filled multi-cell glass fibre-reinforced polymer (GFRP) pultruded column reinforced with lattice-webs (ML-CFPT) was proposed, and an experimental study on the compressive behaviour of square ML-CFPTs was presented in this paper. A total of 18 specimens including 6 control specimens and 12 multi-cell columns with/without lattice-webs were tested, with the studied parameters covering the thicknesses of face sheets and lattice-webs. The test results revealed that multi-cell structures improved the brittle failure manner of the pultruded tubes, and applications of lattice-webs delayed the local buckling of pultruded tubes thus exhibiting better confinement effectiveness. Furthermore, a simple design-oriented model on the basis of test results was proposed to predict the bilinear ascending stress–strain curve of the confined concrete in ML-CFPTs, and the results were consistent with the test data.

文章在线网址:https://doi.org/10.1016/j.engstruct.2022.115584

作者：土木工程学院；审核：张涛，方海