型钢混凝土柱性能变形指标限值研究

发布时间：2018-05-06 09:51

本文选题：型钢混凝土柱 + 抗震性能指标限值　；参考：《华南理工大学》2014年硕士论文

【摘要】：型钢混凝土结构（Steel-Reinforced Concrete Structure）是型钢与混凝土有机结合形成的结构，近年来在建筑结构中，得到了广泛的应用。型钢混凝土柱作为重要的承重构件以及抗侧力构件，其变形性能直接影响到整个结构的抗震安全。目前我国《建筑抗震设计规范》（GB50011-2010）中的基于性能的抗震设计方法并未对型钢混凝土柱的变形性能进行系统量化，无法评估型钢混凝土柱在各个地震水平下的性能状态。所以，有必要对型钢混凝土柱的变形指标限值进行研究。在总结国内外有关理论分析与试验研究的基础上，本文基于大型通用有限元软件ABAQUS对型钢混凝土柱的抗震性能指标限值进行了研究。主要包括以下几方面的内容：（1）总结基于性能的抗震设计方法以及型钢混凝土结构体系的发展状况，收集整理国内学者关于型钢混凝土柱试验数据以及破坏形态数据，分析影响型钢混凝土柱破坏形态的各个因素，并利用有限元软件ABAQUS对试验结果进行数值模拟。（2）对型钢混凝土柱破坏形态的划分方法进行探讨。针对收集到的143根型钢混凝土柱的破坏形态进行研究，得到以弯剪比、剪跨比、箍筋体积配箍率三个因素来进行划分破坏形态的方法。结果表明，，利用该破坏形态划分方法可以较为准确地对型钢混凝土柱的破坏形态进行划分。由于样本较少，提出基于有限元计算结果的破坏形态划分方法，将破坏类型划分为剪切斜压破坏、弯剪破坏、弯曲破坏和小偏压破坏四种破坏形态，给出每种破坏形态的判定方法。通过计算对比，论证该方法的正确性。（3）结合国内外的研究资料，将型钢混凝土柱的破坏过程划分为完好、轻微损坏、轻~中等破坏、中等破坏、严重破坏五个性能状态。并给出各个性能状态对应的宏观状态描述。（4）用数值模拟的方法对283根型钢混凝土柱进行分析研究。研究参数包括：剪跨比、轴压比、翼缘配钢率、腹板配钢率、纵向配筋率、箍筋配筋率、弯剪比。提出不同性能状态下的型钢混凝土柱变形限值，可作为基于性能的设计方法的数据参考。
[Abstract]:Steel-Reinforced Concrete structure (SRC) is an organic combination of steel and concrete, which has been widely used in recent years. As an important load-bearing member and anti-lateral force member, the deformation behavior of steel reinforced concrete column has a direct impact on the seismic safety of the whole structure. At present, the performance-based seismic design method in China's Code for Seismic Design of buildings (GB50011-2010) does not systematically quantify the deformation performance of steel reinforced concrete columns, so it is impossible to evaluate the performance of steel reinforced concrete columns under various earthquake levels. Therefore, it is necessary to study the limit of deformation index of SRC columns. Based on the theoretical analysis and experimental research at home and abroad, the limit values of seismic performance of steel reinforced concrete columns are studied based on the large and universal finite element software ABAQUS. It mainly includes the following aspects: 1) summing up the performance-based seismic design method and the development of SRC structure system, collecting and sorting the experimental data of SRC columns and the data of failure form of SRC columns in China. The factors influencing the failure pattern of SRC columns are analyzed, and the experimental results are numerically simulated by finite element software ABAQUS. (2) the method of dividing the failure form of steel reinforced concrete column is discussed. The failure patterns of 143 steel reinforced concrete columns collected were studied and the methods of dividing failure patterns were obtained by using three factors: bending shear ratio shear span ratio and stirrups volume hoop ratio. The results show that the failure patterns of steel reinforced concrete columns can be divided more accurately by using this method. Due to the small number of samples, a new method based on the results of finite element analysis is proposed to divide the failure patterns into four types: shear baroclinic failure, bending shear failure, bending failure and small biasing failure. The method of judging each damage form is given. The correctness of the method is proved by calculation and comparison. Combined with the domestic and foreign research data, the failure process of SRC columns is divided into five performance states: intact, slight damage, light to medium damage, moderate damage and serious damage. The macroscopic state description of each performance state is given. Analysis and study of 283 steel reinforced concrete columns by numerical simulation. The parameters include: shear span ratio, axial compression ratio, flange steel ratio, web steel ratio, longitudinal reinforcement ratio, stirrups ratio, and bending shear ratio. The deformation limit values of SRC columns under different performance conditions are proposed, which can be used as a reference for performance-based design methods.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.9

【参考文献】