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Experimental Study on Bond-Slip Behavior between Corroded I-Shaped Steel and Concrete in Subsea Tunnel

机译：海底隧道工字型钢与混凝土粘结滑移特性的试验研究

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摘要

Degradation of the bond between I-shaped steel and concrete due to the corrosion of I-shaped steel significantly affects the durability of steel reinforced concrete (SRC) structures. This study carried out the accelerated corrosion test and push-out test to study the bond-slip behavior and characteristics considering the corrosion of I-shaped steel, and test results indicated that: (1) The performance degradation of the bond-slip accelerated when the corrosion ratio reached 12%. (2) The corrosion failure pattern of SRC experienced slip phase and destruction phase in the rising stage. (3) Based on the principle of minimum potential energy, the bond stress was obtained only with the load and the displacement in the free end and the loading end. (4) Meanwhile, a new bond-slip degradation model was developed using the interface damage theory. Finally, the proposed model agreed with the experimental results.

机译：由于工字钢的腐蚀，工字钢与混凝土之间的结合力下降会显着影响钢筋混凝土（SRC）结构的耐久性。这项研究进行了加速腐蚀试验和推出试验，研究了考虑I型钢腐蚀的粘结滑移行为和特性，试验结果表明：（1）粘结滑移性能在加速时性能下降。腐蚀率达到12％。（2）SRC的腐蚀破坏模式在上升阶段经历了滑移阶段和破坏阶段。（3）根据最小势能原理，仅在载荷以及自由端和载荷端的位移下才能获得粘结应力。（4）同时，利用界面损伤理论建立了新的粘结滑移退化模型。最后，提出的模型与实验结果吻合。

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期刊名称 Materials
作者
Mingnian Wang; Yiteng Zhang; Li Yu; Yucang Dong; Yuan Tian; Guojun Zhou;
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作者单位

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年(卷),期 2019(12),18
年度 2019
页码 2863
总页数 18
原文格式 PDF
正文语种
中图分类外科学;
关键词
steel reinforced concrete corrosion push-out test bond–slip behavior bond stress degradation constitutive model;

机译：钢骨混凝土;腐蚀;推出试验;粘结-滑移行为;粘结应力;退化本构模型;

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专利

1. Experimental research and mechanical analysis on the bond-slip behavior between concrete and corroded Ⅰ-shaped steel [J] . Zhang Yiteng, Wang Mingnian, Yu Li, Structural concrete . 2021,第4期

机译：混凝土腐蚀Ⅰ形钢材粘结滑动行为的实验研究与力学分析
2. Bond-slip behavior between pre-corroded rebar and steel fiber reinforced concrete [J] . Hou Lijun, Zhou Bingxuan, Guo Shang, Construction and Building Materials . 2018,第SEPa10期

机译：预腐蚀钢筋与钢纤维增强混凝土之间的粘结滑移行为
3. INFLUENCE OF BOND-SLIP RELATIONSHIP AND TENSILE STRENGTH ON BOND BEHAVIOR BETWEEN CORRODED STEEL BAR AND CONCRETE [J] . Aris ARYANTO, Yasuji SHINOHARA 日本建築学会構造系論文集 . 2013,第685期

机译：粘结滑移关系和抗拉强度对锈蚀钢筋与混凝土粘结性能的影响
4. Bond-slip behavior of corroded reinforcing steel in concretebridges [C] . Congqi Fang Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost . 2006

机译：混凝土桥梁中腐蚀钢筋的粘结滑移行为
5. An experimental study on the non-destructive evaluation of corroded bridge steel. [D] . Burke, Stephen J. 2002

机译：锈蚀桥梁钢无损评估的实验研究。
6. Experimental Study on Shear Behavior of Steel Fiber Reinforced Concrete Beams with High-Strength Reinforcement [O] . Jun Zhao, Jingchao Liang, Liusheng Chu, 2018

机译：高强度钢筋钢纤维混凝土梁抗剪性能的试验研究
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。
8. Concrete for Tunnel Liners:Behavior of Steel Fiber Reinforced Concrete Under Combined Loads. [R] . herring,kenneth s. laws,john w. 1975

机译：隧道衬砌混凝土：组合荷载下钢纤维混凝土的受力性能。

Experimental Study on Bond-Slip Behavior between Corroded I-Shaped Steel and Concrete in Subsea Tunnel

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