Experimental Study and Numerical Analysis of Hybrid Fiber Reinforced Self-Compacting Concrete Segments at High Temperatures

LUO Bin; WANG Huan; BAI Lianwei; REN Zhaoqing; WANG Shanshan

doi:10.3724/j.gyjzG23071115

Volume 54 Issue 5

May 2024

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(5): 226-237

LUO Bin, WANG Huan, BAI Lianwei, REN Zhaoqing, WANG Shanshan. Experimental Study and Numerical Analysis of Hybrid Fiber Reinforced Self-Compacting Concrete Segments at High Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 226-237. doi: 10.3724/j.gyjzG23071115

Citation:

LUO Bin, WANG Huan, BAI Lianwei, REN Zhaoqing, WANG Shanshan. Experimental Study and Numerical Analysis of Hybrid Fiber Reinforced Self-Compacting Concrete Segments at High Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 226-237. doi: 10.3724/j.gyjzG23071115

Citation:

LUO Bin, WANG Huan, BAI Lianwei, REN Zhaoqing, WANG Shanshan. Experimental Study and Numerical Analysis of Hybrid Fiber Reinforced Self-Compacting Concrete Segments at High Temperatures[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 226-237. doi: 10.3724/j.gyjzG23071115

PDF( 21205 KB)

Experimental Study and Numerical Analysis of Hybrid Fiber Reinforced Self-Compacting Concrete Segments at High Temperatures

doi: 10.3724/j.gyjzG23071115

1. China Communications Third Highway Engineering Co., Ltd., Xuzhou 221008, China;
2. State Key Laboratory of Intelligent Construction and Health Operation & Maintenance of Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China

Received Date: 2023-07-11
Available Online: 2024-06-22

Abstract

Abstract

To study the preloading on the mechanical properties of hybrid fiber self-compacting concrete segments at high-temperatures, high-temperature tests were conducted on five segments to obtain the segment furnace temperature, concrete temperature, deformation, and failure mode. A calculation subroutine was developed based on ABAQUS software to establish a temperature field and mechanical analysis model for hybrid reinforced fiber self-compacting concrete segments. The appropriate constitutive relations during the different stages were selected, and the influence of explict or implicit transient thermal strain and preload on segment displacement and equivalent plastic tensile strain was analyzed. The results showed that as the preload increased, the number of cracks on the side of the segment increased and the length became smaller, the number of cracks on the outer arc surface decreased, the distribution of cracks on the inner arc surface became more uniform, and the addition of fibers was helpful to reduce the average crack spacing and the high temperature damage of concrete at the arch foot of segment. The transient thermal strain had an important influence on the equivalent plastic tensile strain distribution of the segment during the cooling stage. When the explicit transient thermal strain was used, the equivalent plastic tensile strain distribution of the segment was more consistent with the test crack area.
- tunnel segments,
- hybrid fibers,
- high temperature test,
- preloading,
- transient thermal strain

FullText(HTML)

References(30)

References

[1]	CHANG S H, CHOI S W, BAE G J. Assessment of fire-induced damage on concrete segment of shield TBM tunnel[J]. Key Engineering Materials, 2006, 42: 321-323.
[2]	闫治国. 隧道衬砌结构火灾高温力学行为及耐火方法研究[D]. 上海: 同济大学, 2007.
[3]	闫治国, 朱合华, 梁利. 火灾高温下隧道衬砌管片力学性能试验[J]. 同济大学学报(自然科学版), 2012, 40(6): 823-828.
[4]	YAN Z G, ZHU H H, JU J W. Behavior of reinforced concrete and steel fiber reinforced concrete shield TBM tunnel linings exposed to high temperatures[J]. Construction and Building Materials, 2013, 38(2): 610-618.
[5]	YAN Z G, SHEN Y, ZHU H H, et al. Experimental investigation of reinforced concrete and hybrid fibre reinforced concrete shield tunnel segments subjected to elevated temperature[J]. Fire Safety Journal, 2015, 71: 86-99.
[6]	李俊杰. 盾构隧道管片及接头耐火试验方法研究[D]. 徐州: 中国矿业大学, 2021.
[7]	郭信君. 盾构隧道混凝土管片构件抗火性能试验及模拟分析研究[D]. 长沙: 中南大学, 2013.
[8]	张高乐, 张稳军, 喻国伦. 火灾高温下盾构隧道衬砌结构热力耦合模型试验[J]. 中国公路学报, 2019, 32(7): 120-128.
[9]	张聪. 混杂纤维自密实混凝土梁高温作用前后的受弯性能[D]. 大连: 大连理工大学, 2013.
[10]	梁宇. 混杂纤维自密实混凝土梁高温后抗剪性能试验研究[D]. 长春: 东北电力大学,2020.
[11]	HUA N, KHORASANI N E, TESSARI A, et al. Experimental study of fire damage to reinforced concrete tunnel slabs[J/OL]. Fire Safety Journal, 2022, 127[2021-11-25]. https://doi.org/10.1016/j.firesaf.2021.103504.
[12]	LAI H P, WANG S Y, XIE Y L. Experimental research on temperature field and structure performance under different lining water contents in road tunnel fire[J]. Tunnelling and Underground Space Technology, 2014, 43: 327-335.
[13]	KHALIQ W, KODUR V. Thermal and mechanical properties of fiber reinforced high performance self-consolidating concrete at elevated temperatures[J]. Cement and Concrete Research, 2011, 41: 1112-1122.
[14]	KODUR V, KHALIQ W. Effect of temperature on thermal properties of different types of high-strength concrete[J]. Journal of Materials in Civil Engineering, 2011, 23(6): 793-80.
[15]	NOVAK J, KOHOUKOVA A. Fire response of hybrid fiber reinforced concrete to high temperature[J]. Procedia Engineering, 2017, 172: 784-790.
[16]	郑文忠, 王睿, 王英. 活性粉末混凝土热工参数试验研究[J]. 建筑结构学报, 2014, 35(9): 107-114.
[17]	王冠. 非均匀受火约束高强纤维混凝土柱的抗火性能研究[D]. 苏州: 苏州科技学院, 2014.
[18]	韩东. 高温下超韧纤维混凝土结构温度场及力学性能研究[D]. 沈阳: 沈阳建筑大学, 2017.
[19]	王程沛. 钢筋纤维混凝土构件抗火性能有限元分析[D]. 长春: 东北电力大学, 2021.
[20]	KHALIQ W, KODUR V. Effectiveness of polypropylene and steel fibers in enhancing fire resistance of high-strength concrete columns[J/OL]. Journal of Structural Engineering, 2018, 144(3). [2018-05-01]. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001981.
[21]	SADAOUI A, KHENANE A. Effect of transient creep on behaviour of reinforced concrete columns in fire[J]. Engineeing Structures, 2009, 31: 2203-2208.
[22]	SADAOUI A, KHENANE A. Effect of transient creep on behaviour of reinforced concrete beams in fire[J]. ACI Materials Journal, 2012, 109(6): 607-616.
[23]	王勇. 钢框架结构中2×2区格连续混凝土板抗火性能研究[D]. 哈尔滨: 哈尔滨工程大学, 2013.
[24]	YI S, ZHU H H, YAN Z G, et al. Semi-analytical thermo-mechanical model for the shield tunnel segmental joint subjected to elevated temperatures[J/OL]. Tunnelling and Underground Space Technology, 2021, 118.[2021-09-17]. https:/doi.org/10.1016/j.tust.2021.104170.
[25]	朱伟. 隧道标准规范(盾构篇)及解说[M]. 北京: 中国建筑工业出版社, 2001.
[26]	陈思威. 钢板加固盾构隧道管片衬砌承载性能及其高温下劣化规律研究[D]. 广州: 华南理工大学,2021.
[27]	中华人民共和国住房和城乡建设部. 建筑设计防火规范:GB 50016—2014[S]. 北京: 中国计划出版社, 2014.
[28]	王勇, 王腾焱, 袁广林, 等. 基于不同混凝土本构模型的混凝土双向板火灾行为分析[J]. 工程力学, 2016, 33(11): 208-219.
[29]	王广勇, 薛素铎. 混凝土瞬态热应变及计算[J]. 北京工业大学学报, 2008, 34(4): 387-390.
[30]	TAO Z, WANG X Q, UY B. Stress-strain curves of structural steel and reinforcing steel after exposure to elevated temperatures[J]. Journal of Materials in Civil Engineering, 2013, 25(9): 1306-1316.