GFRP-钢筋混合配筋混凝土板的抗爆性能

韩泽斌; 屈文俊

doi:10.13801/j.cnki.fhclxb.20230404.001

GFRP-钢筋混合配筋混凝土板的抗爆性能

doi: 10.13801/j.cnki.fhclxb.20230404.001

韩泽斌,
屈文俊^,

同济大学　土木工程学院，上海 200092

基金项目: 国家自然科学基金(51678430)

详细信息

通讯作者:
屈文俊，博士，教授，博士生导师，研究方向为混凝土结构耐久性、混合配筋混凝土结构等　E-mail: quwenjun.tj@tongji.edu.cn

中图分类号: TB333；TU377；O383
计量
- 文章访问数: 487
- HTML全文浏览量: 278
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2023-02-08
- 修回日期: 2023-03-20
- 录用日期: 2023-03-30
- 网络出版日期: 2023-04-04
- 刊出日期: 2023-12-01

Explosion resistance of hybrid GFRP-steel reinforced concrete slab

HAN Zebin,
QU Wenjun^,

College of Civil Engineering, Tongji University, Shanghai 200092, China

Funds: National Natural Science Foundation of China (51678430)

摘要

摘要: 混合配筋混凝土结构将钢筋和纤维复合材料(FRP)筋混合配置于混凝土，可较好地解决钢筋混凝土(SRC)结构的耐久性问题和FRP筋混凝土结构脆性破坏的问题，已广泛应用于土木工程中。为了研究混合配筋混凝土板的抗爆性能，开展了不同比例距离下混合配筋混凝土板和钢筋混凝土板的非接触爆炸试验，对比分析两种板抗爆性能差异和确定混合配筋混凝土板的破坏模式。结果表明：比例距离为0.684 m/kg^1/3时，混合配筋混凝土板位移峰值比钢筋混凝土板位移峰值大19.2%，但残余变形比钢筋混凝土板残余变形小27.3%。引入爆炸恢复指数评估混凝土板爆炸恢复能力，混合配筋混凝土板爆炸恢复指数大于钢筋混凝土板，混合配筋混凝土板有着出色的爆炸后恢复能力。混合配筋混凝土板背爆面破坏出现多条竖向裂缝和板对角线处斜裂缝，而钢筋混凝土板仅出现一条较宽的竖向主裂缝，多条斜裂缝向外辐射。混合配筋混凝土板随着比例距离的减小，破坏模式从整体弯曲破坏发展为整体弯曲破坏和局部混凝土破坏并存。结合试验数据提出混合配筋混凝土板最大支座转角θ的预测公式。为混合配筋混凝土板抗爆设计提供参考。
- 混合配筋 /
- 混凝土板 /
- 爆炸荷载 /
- 破坏模式 /
- 抗爆性能
Abstract: Concrete structures reinforced with a combination of steel and fiber-reinforced polymer (FRP) bars can effectively solve the durability problem of steel-reinforced concrete (SRC) structures and the brittle failure problem of FRP-reinforced concrete structures. It has been widely used in civil engineering. In order to study the explosion resistance of hybrid FRP-steel-reinforced concrete (hybrid-RC) slab, the close-in explosion tests of hybrid-RC slabs and SRC slabs at different scale distances were carried out to compare and analyze the difference of explosion resistance between the two slabs and determine the failure mode of hybrid-RC slab. When the scale distance is 0.684 m/kg^1/3, The maximum displacement of hybrid-RC slab is 19.2% larger than that of SRC slab, but the residual deformation is 27.3% smaller than that of SRC slab. The explosion recovery index is introduced to evaluate the explosion recovery capacity of concrete slabs. The explosion recovery index of hybrid-RC slabs is larger than that of SRC slabs. Hybrid-RC slabs have excellent explosion recovery capacity. The cracks on the back of the hybrid-RC slab depicts multiple vertical cracks and diagonal cracks, while the cracks on the back of the SRC slab depicts one vertical main crack and multiple diagonal cracks radiating outward. With the decrease of the scale distance, the failure mode of the hybrid-RC slab develops from the whole bending failure to the coexistence of the bending failure and the local concrete failure. According to the test data, the prediction formula of the maximum support angle is proposed. It provides a reference for the explosion design of hybrid-RC slab.
- hybrid FRP-steel reinforcement /
- concrete slab /
- blast load /
- failure mode /
- explosion resistance

HTML全文

图 1 混合配筋混凝土板配筋示意图

Figure 1. Reinforcement diagram of hybrid-RC slab

Φ—Diameter

下载: 全尺寸图片幻灯片

图 2 GFRP筋受拉应力-应变曲线

Figure 2. Tensile stress-strain curve of GFRP reinforcement

下载: 全尺寸图片幻灯片

图 3 试验布置

Figure 3. Test arrangement

PCB—Printed circuit board; TNT—Trinitrotoluene

下载: 全尺寸图片幻灯片

图 4 位移传感器布置

Figure 4. Displacement sensor arrangement

下载: 全尺寸图片幻灯片

图 5 应变片位置

Figure 5. Position of strain gauge

下载: 全尺寸图片幻灯片

图 6 入射超压时程曲线

Figure 6. Incident overpressure time history curves

Z—Proportional distance

下载: 全尺寸图片幻灯片

图 7 不同加筋混凝土板位移时程曲线

Figure 7. Displacement time history curves of concrete slabs with different reinforcements

下载: 全尺寸图片幻灯片

图 8 不同加筋混凝土板爆炸恢复指数

Figure 8. Explosion recovery index of concrete slabs with different reinforcements

下载: 全尺寸图片幻灯片

图 9 不同加筋混凝土板板破坏模式 (Z=0.684 m/kg^1/3)

Figure 9. Failure modes of concrete slabs with different reinforcements (Z=0.684 m/kg^1/3)

下载: 全尺寸图片幻灯片

图 10 不同加筋混凝土板板破坏模式 (Z=0.522 m/kg^1/3)

Figure 10. Failure modes of concrete slabs with different reinforcements (Z=0.522 m/kg^1/3)

下载: 全尺寸图片幻灯片

图 11 不同比例距离下混合配筋混凝土板位移时程曲线

Figure 11. Displacement time history of hybrid-RC slab under different scale distances

下载: 全尺寸图片幻灯片

图 12 不同比例距离下混合配筋混凝土板跨中位移

Figure 12. Mid-span displacement of hybrid-RC slab under different scale distances

下载: 全尺寸图片幻灯片

图 13 混合配筋混凝土板最大支座转角拟合曲线

Figure 13. Fitting curve of maximum support angle of hybrid-RC slab

下载: 全尺寸图片幻灯片

图 14 混合配筋混凝土板爆炸恢复指数

Figure 14. Explosion recovery index of hybrid-RC slab

下载: 全尺寸图片幻灯片

图 15 混合配筋混凝土板损伤发展

Figure 15. Damage development of hybrid-RC slabs

下载: 全尺寸图片幻灯片

图 16 不同配筋率混凝土板破坏模式

Figure 16. Failure modes of concrete slabs with different reinforcement ratios

下载: 全尺寸图片幻灯片

表 1 非接触爆炸板试件

Table 1. Non-contact explosion test specimen

Specimen number	Type of reinforcement	Reinforcement ratio ρ/%	TNT /kg	Standoff distance /m	Scale distance /(m·kg^−1/3)
H1-1	GFRP-Steel	0.532	1.6	0.8	0.684
H1-2	GFRP-Steel	0.532	2.4	0.8	0.598
H1-3	GFRP-Steel	0.532	2.8	0.8	0.568
H1-4	GFRP-Steel	0.532	3.6	0.8	0.522
H1-5	GFRP-Steel	0.532	4.6	0.8	0.481
H2-1	GFRP-Steel	1.016	1.6	0.8	0.684
H2-2	GFRP-Steel	1.016	3.6	0.8	0.522
S1-1	Steel	0.532	1.6	0.8	0.684
S1-2	Steel	0.532	3.6	0.8	0.522
Notes: GFRP—Glass fiber reinforced polymer; TNT—Trinitrotoluene; H stands for hybrid GFRP-steel-reinforced concrete (hybrid-RC) slab; S stands for steel-reinforced concrete (SRC) slab; The first numerical number represents different reinforcement ratios, and the second numerical number represents different scale distances.

下载: 导出CSV

表 2 钢筋力学性能

Table 2. Mechanical properties of steel reinforcement

Type of steel bar	Elastic modulus/ GPa	Yield strength/ MPa	Tensile strength /MPa	Yield strain/%	Ultimate strain /%
HRB400 E	209	458	633	0.22	＞10

下载: 导出CSV

表 3 GFRP筋力学性能

Table 3. Mechanical properties of GFRP reinforcement

FRP bar	Elastic modulus/ GPa	Tensile strength/MPa	Ultimate strain/%
GFRP	49.4	1070	2.4
Note: FRP—Fiber reinforced polymer.

下载: 导出CSV

表 4 入射超压

Table 4. Incident overpressure

Scale distance/ (m·kg^−1/3)	Test value/ MPa	Empirical formula value/MPa	Error/%
1.282	0.502	0.454	10.57
1.120	0.678	0.616	10.06
1.064	0.78	0.693	12.55
0.979	0.952	0.826	15.25

下载: 导出CSV

表 5 不同加筋混凝土板应变峰值

Table 5. Peak strain of concrete slabs with different reinforcements

Specimen number	Scale distance/ (m·kg^−1/3)	Peak value of point 1	Peak value of point 2
H1-1	0.684	1.20×10⁻²	2.82×10⁻³
S1-1	0.684	1.06×10⁻²	2.44×10⁻³
H1-4	0.522	2.36×10⁻²	6.75×10⁻³
S1-2	0.522	2.19×10⁻²	6.09×10⁻³

下载: 导出CSV

表 6 不同加筋混凝土板跨中位移数据

Table 6. Mid-span displacement data of concrete slabswith different reinforcements

Specimen number	Scale distance/ (m·kg^−1/3)	Maximum displacement/ mm	Residual deformation/ mm
H1-1	0.684	31	8
S1-1	0.684	26	11
H1-4	0.522	97	39
S1-2	0.522	82	53

下载: 导出CSV

表 7 单向板损伤准则

Table 7. Damage criteria for unidirectional slab

Damage level	Damage criterion
Light	θ_max≤2°
Moderate	2°≤θ_max≤5°
Severe	5°≤θ_max≤12°
Collapse	θ_max≥12°
Note: θ_max—Maximum support angle of the plate.

下载: 导出CSV

表 8 不同配筋率混凝土板跨中位移数据

Table 8. Mid-span displacement data of concrete slabs with different reinforcement ratios

Specimen number	Reinforcement ratio ρ/%	Scale distance/ (m·kg^−1/3)	Maximum displacement/mm	Residual deformation/mm	Explosion recovery index
H1-1	0.532	0.684	31	8	0.74
H2-1	1.016	0.684	20	0	1
H1-4	0.532	0.522	97	38	0.61
H2-2	1.016	0.522	64	16	0.75

下载: 导出CSV

参考文献(24)

[1]	董恒磊, 李东风, 王代玉. 螺旋缠绕挤压肋FRP筋与混凝土间的粘结性能[J]. 复合材料学报, 2022, 39(11): 5239-5250. DONG Henglei, LI Dongfeng, WANG Daiyu. Bond behavior between helically and tightly wound FRP bars and concrete[J]. Acta Materiae Compositae Sinica, 2022, 39(11): 5239-5250(in Chinese).
[2]	ZHOU B B, WU R Y, LU S Q, et al. A general numerical model for predicting the flexural behavior of hybrid FRP-steel reinforced concrete beams[J]. Engineering Structures,2021,239:112293. doi: 10.1016/j.engstruct.2021.112293
[3]	LAU D, PAM H J. Experimental study of hybrid FRP reinforced concrete beams[J]. Engineering Structures,2010,32(12):3857-3865. doi: 10.1016/j.engstruct.2010.08.028
[4]	QU W J, ZHANG X L, HUANG H Q. Flexural behavior of concrete beams reinforced with hybrid (GFRP and steel) bars[J]. Journal of Composites for Construction,2009,13(5):350-359. doi: 10.1061/(ASCE)CC.1943-5614.0000035
[5]	KARA I F, AHOUR A F, KÖROĞLU M A. Flexural behavior of hybrid FRP/steel reinforced concrete beams[J]. Compo-site Structures,2015,129:111-121. doi: 10.1016/j.compstruct.2015.03.073
[6]	ARABA A M, ASHOUR A F. Flexural performance of hybrid GFRP-Steel reinforced concrete continuous beams[J]. Composites Part B: Engineering,2018,154:321-336. doi: 10.1016/j.compositesb.2018.08.077
[7]	RUAN X J, LU C H, XU K, et al. Flexural behavior and serviceability of concrete beams hybrid-reinforced with GFRP bars and steel bars[J]. Composite Structures,2020,235:111772. doi: 10.1016/j.compstruct.2019.111772
[8]	ZHOU B B, WU R Y, LIU Y Q, et al. Flexural strength design of hybrid FRP-steel reinforced concrete beams[J]. Materials,2021,14(21):6400. doi: 10.3390/ma14216400
[9]	庞蕾, 屈文俊, 李昂. 混合配筋混凝土梁抗弯计算理论[J]. 中国公路学报, 2016, 29(7):81-88. doi: 10.3969/j.issn.1001-7372.2016.07.010 PANG Lei, QU Wenjun, LI Ang. Calculation of flexural strength for concrete beams reinforced with hybrid (FRP and steel) bars[J]. China Journal of Highway and Transport,2016,29(7):81-88(in Chinese). doi: 10.3969/j.issn.1001-7372.2016.07.010
[10]	戚岩. 加筋混凝土构件抗弯统一计算理论研究[D]. 上海: 同济大学, 2018. QI Yan. Study on unified flexural calculation theory of reinforced concrete members[D]. Shanghai: Shanghai Tongji University, 2018(in Chinese).
[11]	刘文博. 加筋混凝土构件抗剪统一计算理论研究[D]. 上海: 同济大学, 2018. LIU Wenbo. Study on uniform shear calculation theory for reinforced concrete members[D]. Shanghai: Shanghai Tongji University, 2018(in Chinese).
[12]	屈俊楠. 加筋混凝土构件抗压弯统一计算理论研究[D]. 上海: 同济大学, 2018. QU Junnan. Study on unified calculation theory of reinforced concrete members under eccentric compression[D]. Shanghai: Shanghai Tongji University, 2018(in Chinese).
[13]	许家婧, 朱鹏, 屈文俊. 钢筋-GFRP筋增强混凝土梁的疲劳力学性能[J]. 复合材料学报, 2022, 39(5):2318-2328. doi: 10.13801/j.cnki.fhclxb.20210809.001 XU Jiajing, ZHU Peng, QU Wenjun. Fatigue behaviors of steel bars-GFRP bars reinforced concrete beams[J]. Acta Materiae Compositae Sinica,2022,39(5):2318-2328(in Chinese). doi: 10.13801/j.cnki.fhclxb.20210809.001
[14]	SUN Z Y, WU G, ZHANG J, et al. Experimental study on concrete columns reinforced by hybrid steel-fiber reinforced polymer (FRP) bars under horizontal cyclic loading[J]. Construction and Building Materials,2017,130:202-211. doi: 10.1016/j.conbuildmat.2016.10.001
[15]	IBRAHIM A I, WU G, SUN Z Y. Experimental study of cyclic behavior of concrete bridge columns reinforced by steel basalt-fiber composite bars and hybrid stirrups[J]. Journal of Composites for Construction, 2017, 21(2): 04016091.
[16]	杜修力, 王作虎, 詹界东. 预应力FRP筋混凝土梁的抗震性能试验研究[J]. 土木工程学报, 2012, 45(2):43-50. doi: 10.15951/j.tmgcxb.2012.02.016 DU Xiuli, WANG Zuohu, ZHAN Jiedong. Experimental studies on the seismic performance of concrete beams prestressed with FRP tendons[J]. China Civil Engineering Journal,2012,45(2):43-50(in Chinese). doi: 10.15951/j.tmgcxb.2012.02.016
[17]	王晖, 查晓雄. 火灾下FRP筋混凝土柱性能[J]. 哈尔滨工业大学学报, 2009, 41(12):36-40. doi: 10.3321/j.issn:0367-6234.2009.12.007 WANG Hui, ZHA Xiaoxiong. Performances of FRP rebar reinforced concrete columns under fire condition[J]. Jour-nal of Harbin Institute of Technology,2009,41(12):36-40(in Chinese). doi: 10.3321/j.issn:0367-6234.2009.12.007
[18]	TIAN J B, ZHU P, QU W J. Study on fire resistance time of hybrid reinforced concrete beams[J]. Structural Concrete,2019,20(6):1941-1954. doi: 10.1002/suco.201800320
[19]	中国国家标准化管理委员会. 金属材料拉伸试验第1部分: 室温试验方法: GB/T 228.1—2010[S]. 北京: 中国标准出版社, 2010. Standardization Administration of China. Metallic materials-tensile testing at ambient temperature: GB/T 228.1—2010[S]. Beijing: China Standards Press, 2010(in Chinese).
[20]	中国国家标准化管理委员会. 纤维增强复合材料筋基本力学性能试验方法: GB/T 30022—2013[S]. 北京: 中国标准出版社, 2013. Standardization Administration of China. Test method for basic mechanical properties of fiber reinforced polymer bar: GB/T 30022—2013[S]. Beijing: China Standards Press, 2013(in Chinese).
[21]	HENRYCH J. The dynamics of explosion and its use[M]. Amsterdam: Elsevier, 1979.
[22]	中华人民共和国工业和信息化部. 石油化工控制室抗爆设计规范: SH/T 3160—2009[S]. 北京: 中国标准出版社, 2009. Ministry of Industry and Information Technology of People's Republic of China. Specification for design of blast resistant control building in petrochemical industry: SH/T 3160—2009[S]. Beijing: China Standards Press, 2009(in Chinese).
[23]	WANG W, ZHANG D, LU F Y, et al. Experimental study on scaling the explosion resistance of a one-way square reinforced concrete slab under a close-in blast loading[J]. International Journal of Impact Engineering,2012,49:158-164. doi: 10.1016/j.ijimpeng.2012.03.010
[24]	JAMES C. Structures to resist the effects of accidental explosions: UFC3-340-02 (TM5-1300)[R]. US Department of the Army, 2008.