[1] Fu Qian Zhu Xiaojun Liang Shuting Yang Jian Li Xiangmin Xu Qingfeng Gao Mingzhu,. Experimental study on axial compressive behaviors of prefabricatedcomposite thermal insulation walls after single-side fire exposure [J]. Journal of Southeast University (English Edition), 2018, 34 (2): 220-228. [doi:10.3969/j.issn.1003-7985.2018.02.012]

Copy

Experimental study on axial compressive behaviors of prefabricatedcomposite thermal insulation walls after single-side fire exposure()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

34

Issue:

2018 2

Page:

220-228

Research Field:

Civil Engineering

Publishing date:

2018-06-20

Info

Title:

Experimental study on axial compressive behaviors of prefabricatedcomposite thermal insulation walls after single-side fire exposure

Author(s):

Fu Qian¹ Zhu Xiaojun² Liang Shuting¹ Yang Jian¹ Li Xiangmin³ Xu Qingfeng³ Gao Mingzhu¹

¹School of Civil Engineering, Southeast University, Nanjing 210096, China
² Architects & Engineers Co., Ltd., Southeast University, Nanjing 210096, China
³Shanghai Key Laboratory of Engineering Structure Safety, Shanghai Research Institute of Building Sciences, Shanghai 200032, China

Keywords:

prefabricated composite thermal insulation walls;  expandable polystyrene board;  fire exposure;  insulation layer;  post-fire;  axial compressive behavior

PACS:

TU317

DOI:

10.3969/j.issn.1003-7985.2018.02.012

Abstract:

The axial bearing capacity of prefabricated composite walls composed of inner and outer concrete wythes, expandable polystyrene(EPS)boards and steel sleeve connectors is investigated. An experimental study on the axial bearing capacity of four prefabricated composite walls after fire treatment is carried out. Two of the prefabricated composite walls are normal-temperature specimens, and the others are treated with fire. The damage modes and crack development are observed, and the axial bearing capacity, lateral deformation of the specimens, and the concrete and reinforcing bar strain are tested. The results show that the ultimate bearing capacity of specimens after a fire is less than that of normal-temperature specimens; when the insulation board thicknesses are 40 mm and 60 mm, the decrease amplitudes are 20.8% and 16.8%, respectively. The maximum lateral deformation of specimens after a fire is greater than that of normal-temperature specimens, and under the same level of load, the lateral deformation increases as the insulation board thickness increases. Moreover, the strain values of the concrete and reinforcing bars of specimens after a fire are greater than those of normal-temperature specimens, and the strain values increase as the thickness of insulation board increases.

References:

[1] Mousa M A, Uddin N. Structural behavior and modeling of full-scale composite structural insulated wall panels[J]. Engineering Structures, 2012, 41:320-334.DOI:10.1016/j.engstruct.2012.03.028.
[2] Mathieson H, Fam A. Axial loading tests and simplified modeling of sandwich panels with GFRP skins and soft core at various slenderness ratios[J]. Journal of Composites for Construction, 2015, 19(2): 04014040. DOI:10.1061/(asce)cc.1943-5614.0000494.
[3] Abdolpour H, Escusa G, Sena-Cruz J M, et al. Axial performance of jointed sandwich wall panels[J]. Journal of Composites for Construction, 2017, 21(4):04017009. DOI:10.1061/(asce)cc.1943-5614.0000785.
[4] Naito C, Hoemann J, Beacraft M, et al. Performance and characterization of shear ties for use in insulated precast concrete sandwich wall panels[J]. Journal of Structural Engineering, 2010, 138(1):52-61. DOI:10.1061/(asce)st.1943-541x.0000430.
[5] Xiong J, Ghosh R, Ma L, et al. Bending behavior of lightweight sandwich-walled shells with pyramidal truss cores[J]. Composite Structures, 2014, 116: 793-804. DOI:10.1016/j.compstruct.2014.06.006.
[6] Tomlinson D, Fam A. Analytical approach to flexural response of partially composite insulated concrete sandwich walls used for cladding[J]. Engineering Structures, 2016, 122: 251-266. DOI:10.1016/j.engstruct.2016.04.059.
[7] Ricci I, Palermo M, Gasparini G, et al. Results of pseudo-static tests with cyclic horizontal load on cast in situ sandwich squat concrete walls[J]. Engineering Structures, 2013, 54: 131-149. DOI:10.1016/j.engstruct.2013.03.046.
[8] Choi I, Kim J H, You Y C. Effect of cyclic loading on composite behavior of insulated concrete sandwich wall panels with GFRP shear connectors[J]. Composites Part B: Engineering, 2016, 96:7-19. DOI:10.1016/j.compositesb.2016.04.030.
[9] Palermo M, Trombetti T. Experimentally-validated modelling of thin RC sandwich walls subjected to seismic loads[J]. Engineering Structures, 2016, 119:95-109.DOI:10.1016/j.engstruct.2016.03.070.
[10] Palermo M, Ricci I, Silvestri S, et al. Preliminary interpretation of shaking-table response of a full-scale 3-storey building composed of thin reinforced concrete sandwich walls[J]. Engineering Structures, 2014, 76:75-89. DOI:10.1016/j.engstruct.2014.06.024.
[11] Woltman G, Noel M, Fam A. Experimental and numerical investigations of thermal properties of insulated concrete sandwich panels with fiberglass shear connectors[J]. Energy and Buildings, 2017, 145: 22-31. DOI:10.1016/j.enbuild.2017.04.007.
[12] Zhang L, Bai Y, Chen W, et al. Thermal performance of modular GFRP multicellular structures assembled with fire resistant panels[J]. Composite Structures, 2017, 172: 22-33. DOI:10.1016/j.compstruct.2017.03.076.
[13] Pereira D, Gago A, Proença J, et al. Fire performance of sandwich wall assemblies[J]. Composites Part B: Engineering, 2016, 93:123-131. DOI:10.1016/j.compositesb.2016.03.001.
[14] Xiao J Z, Xie Q H, Li Z W, et al. Fire resistance and post-fire seismic behavior of high strength concrete shear walls[J]. Fire Technology, 2016, 53(1): 65-86. DOI:10.1007/s10694-016-0582-6.
[15] Xiao J Z, Li J, Jiang F. Research on the seismic behavior of HPC shear walls after fire[J]. Materials and Structures, 2004, 37(8):506-512.
[16] Go C G, Tang J R, Chi J H, et al. Fire-resistance property of reinforced lightweight aggregate concrete wall[J]. Construction and Building Materials, 2012, 30: 725-733. DOI:10.1016/j.conbuildmat.2011.12.081.
[17] Fernando P L N, Jayasinghe M T R, Jayasinghe C. Structural feasibility of expanded polystyrene(EPS)based lightweight concrete sandwich wall panels[J]. Construction and Building Materials, 2017, 139:45-51. DOI:10.1016/j.conbuildmat.2017.02.027.
[18] Peng Y Y, Qian J R, Wang Y H. Cyclic performance of precast concrete shear walls with a mortar-sleeve connection for longitudinal steel bars[J]. Materials and Structures, 2016, 49(6):2455-2469.DOI:10.1617/s11527-015-0660-0.
[19] Ghandehari M, Behnood A, Khanzadi M. Residual mechanical properties of high-strength concretes after exposure to elevated temperatures[J]. Journal of Materials in Civil Engineering, 2010, 22(1): 59-64. DOI:10.1061/(asce)0899-1561(2010)22:1(59).

Memo

Memo:

Biographies: Fu Qian(1988—), female, Ph.D. candidate; Zhu Xiaojun(corresponding author), male, doctor, professor-level senior engineer, 496380566@qq.com.
Foundation items: The National Key Research and Development Program of China(No.2016YFC0701703), the Natural Science Foundation of Higher Education Institutions of Jiangsu Province(No.2016TM045J), the Scientific Innovation Research of Graduate Students in Jiangsu Province(No.KYLX_0151).
Citation: Fu Qian, Zhu Xiaojun, Liang Shuting, et al. Experimental study on axial compressive behaviors of prefabricated composite thermal insulation walls after single-side fire exposure[J].Journal of Southeast University(English Edition), 2018, 34(2):220-228.DOI:10.3969/j.issn.1003-7985.2018.02.012.

Common functions