硫酸盐侵蚀作用下隧道衬砌时变力学行为研究

何文正; 徐林生

doi:10.11779/CJGE202106004

硫酸盐侵蚀作用下隧道衬砌时变力学行为研究 English Version

何文正^{1, 2,},
徐林生^1, ,

1.
重庆交通大学土木工程学院,重庆　400074
2.
重庆广播电视大学城市建设工程学院,重庆　401520

基金项目:

重庆市自然科学基金面上项目 cstc2020jcyj-msxmX0963

重庆市教育委员会科学技术研究计划青年项目 KJQN201904004

山区公路水运交通地质减灾重庆市高校市级重点实验室开放基金项目 kfxm2018-08

详细信息

作者简介:
何文正(1982—),男,讲师,博士研究生,主要从事隧道及地下工程方面研究和教学工作。E-mail: hewenzheng1982@126.com

通讯作者:
徐林生, E-mail: phoniex8210@sina.com

中图分类号: U451
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出版历程
- 收稿日期: 2020-07-27
- 网络出版日期: 2022-12-02
- 刊出日期: 2021-05-31

Time-dependent mechanical behavior of tunnel linings under sulfate attack

HE Wen-zheng^{1, 2,},
XU Lin-sheng^1, ,

1.
College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2.
College of Urban Construction Engineering, Chongqing Radio & Television University, Chongqing 401520, China

摘要

摘要: 隧道钢筋混凝土衬砌在硫酸盐侵蚀作用下将发生化学–力学耦合作用,导致其力学性能退化,其退化规律受多方面因素的影响。为了揭示硫酸盐地层中的隧道衬砌在多因素耦合作用下的宏观力学性能退化时变规律,提出了一种硫酸盐侵蚀混凝土的化学–力学全过程分析模型。模型以改进后的硫酸根离子扩散–反应方程组为基础,结合荷载对混凝土孔隙率的影响规律和荷载–钙矾石生长共同作用下的体应变变化规律,计算了混凝土的无量纲损伤参数,以此建立了硫酸盐侵蚀作用下的钢筋混凝土衬砌承载力演变模型,并用试验数据对提出的模型进行了验证。研究结果表明,硫酸盐侵蚀将显著降低钢筋混凝土衬砌的承载能力,受侵蚀的衬砌更容易发生大偏心破坏。该研究成果构建了硫酸根离子扩散–反应过程与隧道衬砌宏观力学性能演化之间的桥梁关系,可以为硫酸盐地层隧道结构的耐久性评估提供参考。
- 硫酸盐侵蚀 /
- 隧道衬砌 /
- 损伤 /
- 耦合
Abstract: The chemical-mechanical coupling effect of tunnel lining concrete under sulfate attack will lead to the degradation of its mechanical properties, and the degradation law is affected by many factors. A chemical–mechanical coupling method for accurately evaluating the time-dependent mechanical behavior of tunnel linings under sulfate attack is proposed. The improved diffusion-reaction equations for sulfate ions are obtained on the basis of the diffusion–reaction approach in combination with the mechanism of volume expansion under a sulfate attack and the influence of load on the concrete voidage. The constitutive response and damage parameters of concrete are calculated according to the volumetric strain caused by the external load and ettringite growth. Then, the evolution model for the bearing capacity of reinforced concrete linings under sulfate attack is established. A case study is conducted to analyze the degradation laws of strength of concrete and bearing capacity of linings obtained using the proposed method. The results demonstrate that the sulfate corrosion will significantly reduce the bearing capacity of the reinforced concrete linings, and the eroded lining is more prone to large eccentric damage. The proposed method serves as a reference for evaluating the durability of an underground structure in a sulfate formation.
- sulfate attack /
- tunnel lining /
- damage /
- coupling

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图 1 硫酸根离子侵蚀混凝土的耦合效应

Figure 1. Coupling effects of sulfate attack on concrete

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图 2 混凝土受拉应力–应变本构模型及损伤演变曲线

Figure 2. Tensile stress-strain constitutive model and damage evolution curves of concrete

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图 3 受腐蚀钢筋混凝土衬砌截面

Figure 3. Cross section of reinforced concrete linings under sulfate attack

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图 4 离子浓度随时间和位置的变化图

Figure 4. Change of sulfate ion concentration with time and position

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图 5 荷载水平对离子浓度的影响

Figure 5. Influences of load on ion concentration

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图 6 水灰比对离子浓度的影响

Figure 6. Influences of water–cement ratio on ion concentration

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图 7 衬砌承载力演化曲线

Figure 7. Evolution curve of bearing capacity of linings

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图 8 应力-腐蚀耦合加载试验

Figure 8. Experiment equipment for stress-corrosion coupling

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图 9 承载力劣化系数试验验证

Figure 9. Experimental verification of degradation coefficient of bearing capacity

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表 1 主要计算参数

Table 1 Main parameters used in the model

计算参数	单位	数值	数据来源
$U_{0}$	${mol/m}^{3}$	0	—
$U_{\max}$	${mol/m}^{3}$	75	—
$L$	$m$	0.1	—
$U_{CA0}$	${mol/m}^{3}$	450	文献[10]
$U_{{Ca}^{2 +}}$	${mol/m}^{3}$	21.5	文献[10]
$q$	—	2.46	文献[14]
$χ$	—	1.77	文献[14]
$κ$	—	5.61	文献[14]
$k_{1}$	$s^{- 1}$	1.22×10⁻⁸	文献[10]
$k_{2}$	$s^{- 1}$	1.22×10⁻⁹	文献[10]
$R_{w}$	MPa	335	HRB335
$A_{g}$ , ${A^{'}}_{g}$	mm²	157	—
$a$ , $a^{'}$	mm	20	—
$R_{w}$	MPa	19	C25

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参考文献(20)

[1]	雷明锋, 彭立敏, 施成华. 硫酸盐侵蚀环境下隧道结构力学性能演化规律试验研究[J]. 土木工程学报, 2013, 46(1): 126-132. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201301015.htm LEI Mi-feng, PENG Li-min, SHI Cheng-hua. Experimental study on evolution law of mechanical properties of tunnel structure suffering ambient sulfate[J]. China Civil Engineering Journal, 2013, 46(1): 126-132. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201301015.htm
[2]	刘鑫, 刘伟庆, 王曙光, 等. 混凝土硫酸盐侵蚀理论模型的研究现状及展望[J]. 材料导报, 2014, 28(13): 89-95. https://www.cnki.com.cn/Article/CJFDTOTAL-CLDB201413021.htm LIU Xin, LIU Wei-qing, WANG Shu-guang, et al. Recent development on theoretical models of sulfate attack on concrete[J]. Materials Review, 2014, 28(13): 89-95. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-CLDB201413021.htm
[3]	周凤玺, 王立业, 赖远明. 饱和盐渍土的一维蠕变试验与模型研究[J]. 岩土工程学报, 2020, 42(1): 142-149. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202001023.htm ZHOU Feng-xi, WANG Li-ye, LAI Yuan-ming. One- dimensional creep tests and model studies on saturated saline soil[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(1): 142-149. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202001023.htm
[4]	姚明博, 李镜培. 水压作用下硫酸盐在混凝土桩中的侵蚀分布规律[J]. 同济大学学报(自然科学版), 2019, 47(8): 1131-1136. doi: 10.11908/j.issn.0253-374x.2019.08.007 YAO Ming-bo, LI Jing-pei. Distribution behavior of sulfate erosion in concrete piles under water pressure[J]. Journal of Tongji University(Natural Science), 2019, 47(8): 1131-1136. (in Chinese) doi: 10.11908/j.issn.0253-374x.2019.08.007
[5]	牛荻涛, 王家滨, 马蕊. 干湿交替喷射混凝土硫酸盐侵蚀试验[J]. 中国公路学报, 2016, 29(2): 82-89. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL201602011.htm NIU Di-tao, WANG Jia-bin, MA Rui. Sulfate attack test of shotcrete under dry-wet alternation[J]. China Journal of Highway and Transport, 2016, 29(2): 82-89. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL201602011.htm
[6]	逯静洲, 刘亚, 朱孔峰, 等. 混凝土经历荷载历史后在硫酸盐干湿交替作用下损伤试验研究[J]. 混凝土, 2017(2): 37-41. https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201702010.htm LU Jing-zhou, LIU Ya, ZHU Kong-feng, et al. Damage behaviors of concrete due to sulfate attack in wet-dry cycle environment after experiencing historical load[J]. Concrete, 2017(2): 37-41. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201702010.htm
[7]	STAWISKI B, KANIA T. Examining the distribution of strength across the thickness of reinforced concrete elements subject to sulphate corrosion using the ultrasonic method[J]. Materials, 2019, 12(16): 2519.
[8]	IKUMI T, CAVALARO S H P, SEGURA I, et al. Alternative methodology to consider damage and expansions in external sulfate attack modeling[J]. Cement & Concrete Research, 2014, 63: 105-116.
[9]	IKUMI T, SEGURA I. Numerical assessment of external sulfate attack in concrete structures: a review[J]. Cement and Concrete Research, 2019, 121: 91-105.
[10]	ZUO X B, SUN W, YU C. Numerical investigation on expansive volume strain in concrete subjected to sulfate attack[J]. Construction & Building Materials, 2012, 36: 404-410.
[11]	ZUO X B, WANG J L, SUN W, et al. Numerical investigation on gypsum and ettringite formation in cement pastes subjected to sulfate attack[J]. Computers and Concrete, 2017, 19(1): 19-31.
[12]	ISLAM M A, GOLROKH A J, LU Y. Chemomechanical modeling of sulfate attack-induced damage process in cement-stabilized pavements[J]. Journal of Engineering Mechanics, 2019, 145: 1-11.
[13]	高润东. 复杂环境下混凝土硫酸盐侵蚀微-宏观劣化规律研究[D]. 北京: 清华大学, 2010. GAO Run-dong. Micro-macro Degradation Regularity of Sulfate Attack on Concrete Under Complex Environments[D]. Beijing: Tsinghua University, 2010. (in Chinese)
[14]	SARKAR S, MAHADEVAN S, MEEUSSEN J C L, et al. Numerical simulation of cementitious materials degradation under external sulfate attack[J]. Cement and Concrete Composites, 2010, 32(3): 241-252.
[15]	赵羽习, 王传坤, 金伟良, 等. 混凝土表面氯离子浓度时变规律试验研究[J]. 土木建筑与环境工程, 2010, 32(3): 8-13. https://www.cnki.com.cn/Article/CJFDTOTAL-JIAN201003003.htm ZHAO Yu-xi, WANG Chuan-kun, JIN Wei-liang, et al. Experimental analysis on time-dependent law of surface chloride on concentration of concrete[J]. Journal of Civil, Architectural & Environmental Engineering, 2010, 32(3): 8-13. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JIAN201003003.htm
[16]	金浏, 杜修力. 孔隙率变化规律及其对混凝土变形过程的影响[J]. 工程力学, 2013(6): 191-198. https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX201306029.htm JIN Liu, DU iu-li. Variation of porosity and its effect on the deformation process of concrete[J]. Engineering Mechanics, 2013(6): 191-198. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GCLX201306029.htm
[17]	GAO R, LI Q, ZHAO S, et al. Deterioration mechanisms of sulfate attack on concrete under alternate action[J]. Journal of Wuhan University of Technology(Materials Science Edition), 2010, 25(2): 355-359.
[18]	贾金青, 胡玉龙, 王东来, 等. 混凝土抗压强度与孔隙率关系的研究[J]. 混凝土, 2015(10): 56-59, 63. https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201510017.htm JIA Jin-qing, HU Yu-long, WANG Dong-lai, et al. Effects of porosity on the compressive strength of concrete[J]. Concrete, 2015(10): 56-59, 63. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HLTF201510017.htm
[19]	杜健民, 梁咏宁, 张风杰. 地下结构混凝土硫酸盐腐蚀机理及性能退化[M]. 北京: 中国铁道出版社, 2011. DU Jian-min, LIANG Yong-ning, ZHANG Feng-jie. Sulfate Corrosion Mechanism and Performance Degradation of Underground Structure Concrete[M]. Beijing: China Railway Publishing House, 2011. (in Chinese)
[20]	公路隧道设计规范第一册土建工程：JTG 3370.1—2018[S]. 2018. Specifications for Design of Highway Tunnels Section Ⅰ Civil Engineering: JTG 3370.1—2018[S]. 2018. (in Chinese)

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