巨型柱钢管混凝土结构界面粘结滑移研究
发布时间：2018-08-16 10:49
【摘要】：巨型柱钢管混凝土结构因钢管混凝土特有的紧箍效应优势在超高层建筑工程中得到越来越广泛应用,随着应用的深入,钢管与混凝土接触界面的粘结情况引起工程界的极大关注,并成为工程应用领域研究的难题之一。本文依托于天津117大厦地库结构工程,对巨型钢管混凝土结构进行了理论分析及有限元模拟研究,探讨了结构内部钢管与混凝土接触面的粘结滑移情况。 首先,进行了钢管混凝土粘结强度的理论分析。分别说明了极限粘结强度、平均粘结强度和名义平均滑移的基本概念及相应的计算公式；研究了钢管混凝土界面粘结力的组成,它与钢筋与混凝土之间的抗滑移粘结力一样,主要包括化学胶结力、机械咬合力和摩阻力三部分,并分析了钢管混凝土推出试验的P-S关系发展过程中三者对抗剪的贡献；总结了钢管混凝土界面粘结强度的主要影响因素及粘结强度随这些因素的变化规律。 其次,对钢管混凝土结构的材料及界面粘结滑移本构关系进行了研究。通过分析比较国内外对钢管混凝土结构中钢材和核心混凝土本构关系的研究成果,得到了钢材及核心混凝土的本构关系,同时从理论上分析了钢管应力、钢管与混凝土的粘结应力及相对滑移的相互关系,通过数学分析,推导了钢管应力、钢管与混凝土的粘结应力及相对滑移的解析表达式,及粘结滑移的本构关系。 第三,采用大型通用有限元软件对天津117大厦地库结构项目巨型柱钢筋混凝土结构混凝土浇筑过程进行了有限元数值模拟,得到了钢管及核心混凝土的位移、应力及界面的粘结力,并分析了粘结力的分布及粘结滑移情况。 最后,介绍了天津117大厦地库项目针对巨型柱钢管混凝土结构所做的木实验与钢实验,并对钢实验的温度场进行了数值模拟分析。实验结果及研究结果施工技术的合理可靠性,并为施工优化提供了重要依据。 综上所述,本文的研究成果为天津117大厦地库结构项目巨型柱钢管混凝土结构的实施提供了理论参考与施工建议。
[Abstract]:Concrete filled steel tube (CFST) structure with giant columns has been used more and more widely in super high-rise building engineering because of its unique advantages of the compaction effect of CFST, and with the development of application, The bond between steel tube and concrete has attracted great attention in engineering field and has become one of the problems in engineering application field. Based on the basement structure engineering of Tianjin 117 Building, this paper makes theoretical analysis and finite element simulation study on the giant concrete-filled steel tube structure, and probes into the bond-slip situation of the interface between steel tube and concrete inside the structure. Firstly, the bond strength of concrete-filled steel tube (CFST) is analyzed theoretically. The basic concepts of ultimate bond strength, average bond strength and nominal average slip are explained respectively, and the corresponding calculation formulas are given, and the composition of the interface bond force of concrete filled steel tube is studied, which is the same as the anti-slip bond force between steel bar and concrete. The paper mainly includes three parts: chemical bonding force, mechanical bite force and friction resistance, and analyzes the contribution of them to shear resistance in the development of P-S relation of concrete filled steel tube (CFST) roll-out test. The main factors affecting the bond strength of concrete-filled steel tubular (CFST) interface and the variation of bond strength with these factors are summarized. Secondly, the material and interface bond-slip constitutive relation of concrete-filled steel tubular structure are studied. Through the analysis and comparison of the constitutive relations between steel and core concrete in concrete filled steel tube structures at home and abroad, the constitutive relation of steel and core concrete is obtained, and the stress of steel tube is analyzed theoretically. The relationship between bond stress and relative slip of steel tube and concrete is studied. Through mathematical analysis, the analytical expressions of the stress of steel tube, the bond stress and relative slip of steel tube and concrete, and the constitutive relation of bond slip are derived. Thirdly, the finite element method is used to simulate the concrete pouring process of the giant column reinforced concrete structure project of Tianjin 117 Building, and the displacement of the steel tube and the core concrete is obtained. The stress and bonding force of the interface are analyzed, and the distribution of the bond force and the bond slip are analyzed. At last, the paper introduces the wood experiment and steel experiment for the concrete filled steel tube structure of Tianjin 117 Building, and the numerical simulation of the temperature field of the steel experiment is carried out. The reasonable reliability of the experimental results and the research results provides an important basis for the construction optimization. To sum up, the research results of this paper provide theoretical reference and construction suggestions for the implementation of giant concrete-filled steel tubular structure project of the basement structure of Tianjin 117 Building.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9
本文编号：2185759
[Abstract]:Concrete filled steel tube (CFST) structure with giant columns has been used more and more widely in super high-rise building engineering because of its unique advantages of the compaction effect of CFST, and with the development of application, The bond between steel tube and concrete has attracted great attention in engineering field and has become one of the problems in engineering application field. Based on the basement structure engineering of Tianjin 117 Building, this paper makes theoretical analysis and finite element simulation study on the giant concrete-filled steel tube structure, and probes into the bond-slip situation of the interface between steel tube and concrete inside the structure. Firstly, the bond strength of concrete-filled steel tube (CFST) is analyzed theoretically. The basic concepts of ultimate bond strength, average bond strength and nominal average slip are explained respectively, and the corresponding calculation formulas are given, and the composition of the interface bond force of concrete filled steel tube is studied, which is the same as the anti-slip bond force between steel bar and concrete. The paper mainly includes three parts: chemical bonding force, mechanical bite force and friction resistance, and analyzes the contribution of them to shear resistance in the development of P-S relation of concrete filled steel tube (CFST) roll-out test. The main factors affecting the bond strength of concrete-filled steel tubular (CFST) interface and the variation of bond strength with these factors are summarized. Secondly, the material and interface bond-slip constitutive relation of concrete-filled steel tubular structure are studied. Through the analysis and comparison of the constitutive relations between steel and core concrete in concrete filled steel tube structures at home and abroad, the constitutive relation of steel and core concrete is obtained, and the stress of steel tube is analyzed theoretically. The relationship between bond stress and relative slip of steel tube and concrete is studied. Through mathematical analysis, the analytical expressions of the stress of steel tube, the bond stress and relative slip of steel tube and concrete, and the constitutive relation of bond slip are derived. Thirdly, the finite element method is used to simulate the concrete pouring process of the giant column reinforced concrete structure project of Tianjin 117 Building, and the displacement of the steel tube and the core concrete is obtained. The stress and bonding force of the interface are analyzed, and the distribution of the bond force and the bond slip are analyzed. At last, the paper introduces the wood experiment and steel experiment for the concrete filled steel tube structure of Tianjin 117 Building, and the numerical simulation of the temperature field of the steel experiment is carried out. The reasonable reliability of the experimental results and the research results provides an important basis for the construction optimization. To sum up, the research results of this paper provide theoretical reference and construction suggestions for the implementation of giant concrete-filled steel tubular structure project of the basement structure of Tianjin 117 Building.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9
【参考文献】
相关期刊论文 前10条
1 韩林海,陶忠;方钢管混凝土柱的延性系数[J];地震工程与工程振动;2000年04期
2 韩林海,陶忠,阎维波;圆钢管混凝土压弯构件荷载-位移滞回性能分析[J];地震工程与工程振动;2001年01期
3 陶忠,韩林海;方钢管混凝土压弯构件滞回性能的试验研究[J];地震工程与工程振动;2001年01期
4 陈宝春,欧智菁,王来永,韩林海;钢管混凝土偏心受压承载力试验分析[J];福州大学学报(自然科学版);2002年06期
5 陈宝春,王来永,欧智菁,韩林海;钢管混凝土偏心受压应力—应变试验研究[J];工程力学;2003年06期
6 俞静,朱平华,蒋沧如;论高层建筑基础大体积混凝土水化放热规律[J];国外建材科技;2004年03期
7 陶忠,韩林海;方钢管混凝土压弯构件荷载-位移滞回性能研究[J];工业建筑;2000年06期
8 张大旭,张素梅;钢管混凝土梁柱节点动力性能试验研究[J];哈尔滨建筑大学学报;2001年01期
9 张大旭,张素梅;钢管混凝土柱与梁节点抗剪承载力[J];哈尔滨建筑大学学报;2001年03期
10 张素梅,张大旭;钢管混凝土柱与梁节点荷载-位移滞回曲线理论分析[J];哈尔滨建筑大学学报;2001年04期
相关博士学位论文 前2条
1 康希良;钢管混凝土组合力学性能及粘结滑移性能研究[D];西安建筑科技大学;2008年
2 李黎明;矩形钢管混凝土柱力学性能研究[D];天津大学;2007年
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