Structural performance evaluation of pultruded GFRP composite space truss: Experimental study and numerical simulation

被引：0

作者：

Chen C. ^{[1
]}

Fang H. ^{[1
]}

Han J. ^{[2
]}

Qi Y. ^{[1
]}

机构：

[1] College of Civil Engineering, Nanjing Tech University, Nanjing

[2] College of Architectural Engineering, Jiangsu Open University, Nanjing

来源：

Case Studies in Construction Materials | 2022年 / 17卷

基金：

中国国家自然科学基金;

关键词：

GFRP; Numerical simulation; Pultrusion; Space structure; Steel joints;

D O I：

10.1016/j.cscm.2022.e01551

中图分类号：

学科分类号：

摘要：

This paper presents space truss structures assembled from pultruded square hollow glass fiber reinforced plastic (GFRP) members. The novel steel connectors are used to connect the GFRP members, which can significantly improve construction efficiency. The structural performance of the four-span space truss and space truss unit is evaluated by the four-point bending test and the static test, respectively. The test results show that the GFRP space truss structure exhibited satisfactory overall stiffness and load-bearing capacity. The failure modes mainly include shear failure of the bolt, local buckling of GFRP profiles, and local cracks at holes and cuts. The structural stiffness of the space truss unit increases at the post-failure stage, which is caused by the compression buckling of the pultruded GFRP profile. The structural stiffness of the four-span space truss decreases at the post-failure stage, and the large nonlinear deformation capability provides an early warning before the ultimate collapse. In addition, a finite element model considering material nonlinearity is developed to predict the failure mode, overall structural stiffness, and load-carrying capacity of the GFRP space truss structure. © 2022 The Authors

引用

共 44 条

[1]

Xie H., Fang H., Li X., Wan L., Wu P., Yu Y., Low-velocity impact damage detection and characterization in composite sandwich panels using infrared thermography, Compos. Struct., 269, (2021)

[2]

Girao Coelho A.M., Mottram J.T., A review of the behaviour and analysis of bolted connections and joints in pultruded fibre reinforced polymers, Mater. Des., 74, pp. 86-107, (2015)

[3]

Chen J., Fang H., Liu W., Zhu L., Zhuang Y., Wang J., Han J., Energy absorption of foam-filled multi-cell composite panels under quasi-static compression, Compos. Part B Eng., 153, pp. 295-305, (2018)

[4]

Chen J., Zhu L., Fang H., Han J., Huo R., Wu P., Study on the low-velocity impact response of foam-filled multi-cavity composite panels, Thin-Walled Struct., 173, (2022)

[5]

Ramanathan S., Benzecry V., Suraneni P., Nanni A., Condition assessment of concrete and glass fiber reinforced polymer (GFRP) rebar after 18 years of service life, Case Stud. Constr. Mater., 14, (2021)

[6]

Xie H., Shen C., Fang H., Han J., Cai W., Flexural property evaluation of web reinforced GFRP-PET foam sandwich panel: experimental study and numerical simulation, Compos. Part B Eng., 234, (2022)

[7]

Yoddumrong P., Rodsin K., Katawaethwarag S., Seismic strengthening of low-strength RC concrete columns using low-cost glass fiber reinforced polymers (GFRPs), Case Stud. Constr. Mater., 13, (2020)

[8]

Otoom O.F., Lokuge W., Karunasena W., Manalo A.C., Ozbakkaloglu T., Thambiratnam D., Experimental and numerical evaluation of the compression behaviour of GFRP-wrapped infill materials, Case Stud. Constr. Mater., 15, (2021)

[9]

Lou T., Li Z., Pang M., Behavior of externally prestressed continuous beams with FRP/steel rebars under symmetrical/unsymmetrical loading: Numerical study, Case Stud. Constr. Mater., (2022)

[10]

Sivanantham P., Gurupatham B.G.A., Roy K., Rajendiran K., Pugazhlendi D., Plastic hinge length mechanism of steel‐fiber‐reinforced concrete slab under repeated loading, J. Compos. Sci., 6, pp. 1-19, (2022)

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