按新旧规范设计的RC框架结构基于IDA的抗震研究
发布时间：2018-09-12 10:59
【摘要】：随着我国经济的飞速发展，建筑行业也进入一个腾飞的时期，伴随科技进步，建筑行业的设计规范也由时代的前进，不断的进行修正与完善。在地震灾害频频发生的背景之下，我国颁布实施了最新的《建筑抗震设计规范》GB50011-2010，建筑的抗震设计进入了一个新阶段，但对于已存在的众多既有建筑物，均是以旧版抗震规范为标准进行抗震设计和建造的。因此，按新旧抗震规范设计的建筑结构的抗震性能备受关注。 对于各类不同的建筑结构，本文以最普遍的钢筋混凝土结构为研究对象，采用增量动力分析方法，比较研究按GB50011-2010、GB50011-2001、GBJ11-89三版新旧抗震规范设计的框架结构的抗震性能，主要内容如下： （1）对传统的增量动力分析方法进行了改进。按地震动特征周期选取地震波和随意选取地震波方法输入，比较对IDA结果离散性的影响，得出按地震动特征周期选取地震波输入得到的IDA结果的离散性明显较低。在此基础上，按不同的特征周期计算方法选取地震波输入，比较对IDA结果影响，建议优先选用FEMA-450中的计算方法选取地震波输入。 （2）通过三版新旧规范关于钢筋混凝土框架设计规范条文的分析，重点比较抗震材料规定、场地类别、地震计算规定、内力计算、构造要求等要求的差别，发现随着抗震规范的发展，在加强建筑结构弹性阶段强度设计同时，更加关注建筑结构在弹塑性阶段的延性设计。 （3）按10版、01版、89版抗震规范规定，对同一钢筋混凝土结构进行结构设计和模型建立，通过改进的增量动力分析方法，比较三个结构的塑性铰分布、IDA曲线结果、倒塌储备系数、IDA曲线易损性等方面，，总结得出10版结构较01版、89版结构具有较好的抗震性能。 （4）对抗震性能较差的01版、89版结构，采用钢支撑的抗震加固方案，并对两个结构加固前后的抗震性能进行对比，得出钢支撑加固在一定程度上有效的提升了两结构的承载力，但降低了结构自身的延性。
[Abstract]:With the rapid development of China's economy, the construction industry has also entered a period of rapid development. With the progress of science and technology, the design standards of the construction industry are constantly revised and improved by the advance of the times. Under the background of frequent occurrence of earthquake disasters, our country promulgated and implemented the latest "Code for Seismic Design of buildings", the aseismic design of GB50011-2010, buildings entered a new stage, but for many existing buildings that already exist, All are based on the old seismic code as the standard for seismic design and construction. Therefore, the seismic performance of building structures designed according to the new and old seismic codes has attracted much attention. For various kinds of building structures, this paper takes the most common reinforced concrete structure as the research object, adopts the incremental dynamic analysis method, compares and studies the seismic performance of the frame structure designed according to the new and old seismic code of GB50011-2010,GB50011-2001,GBJ11-89 three editions. The main contents are as follows: (1) the traditional incremental dynamic analysis method is improved. Seismic wave is selected according to the characteristic period of ground motion and the method input of random seismic wave is selected. The effect on the dispersion of IDA results is compared. It is concluded that the dispersion of IDA result obtained by selecting seismic wave input according to the characteristic period of earthquake motion is obviously lower. On this basis, seismic wave input is selected according to different characteristic period calculation methods, and the effect on IDA results is compared. It is suggested that the calculation method in FEMA-450 should be selected first for seismic wave input. (2) through the analysis of the provisions of the new and old codes on the design of reinforced concrete frames, the provisions on seismic material, site category and seismic calculation are compared. With the development of seismic code, it is found that the strength design in the elastic stage of building structure is strengthened at the same time. More attention is paid to the ductility design of the building structure in the elastic-plastic stage. (3) according to the earthquake resistance code of the 10th edition, the tenth edition and the edition No. 89, the structural design and model establishment of the same reinforced concrete structure are carried out, and the improved incremental dynamic analysis method is used to analyze the ductility of the same reinforced concrete structure. The results of plastic hinge distribution and IDA curve of three structures are compared, and the collapse reserve coefficient and the vulnerability of IDA curve are compared. It is concluded that the 10th edition structure has better seismic performance than that of the 01 edition Jian-89 version structure. (4) the steel braced aseismic strengthening scheme is adopted for the structure of the 10th edition version of the Jian-89 edition which has poor seismic performance. By comparing the seismic behavior of the two structures before and after strengthening, it is concluded that steel bracing can effectively enhance the bearing capacity of the two structures to some extent, but reduce the ductility of the structure itself.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU375.4
[Abstract]:With the rapid development of China's economy, the construction industry has also entered a period of rapid development. With the progress of science and technology, the design standards of the construction industry are constantly revised and improved by the advance of the times. Under the background of frequent occurrence of earthquake disasters, our country promulgated and implemented the latest "Code for Seismic Design of buildings", the aseismic design of GB50011-2010, buildings entered a new stage, but for many existing buildings that already exist, All are based on the old seismic code as the standard for seismic design and construction. Therefore, the seismic performance of building structures designed according to the new and old seismic codes has attracted much attention. For various kinds of building structures, this paper takes the most common reinforced concrete structure as the research object, adopts the incremental dynamic analysis method, compares and studies the seismic performance of the frame structure designed according to the new and old seismic code of GB50011-2010,GB50011-2001,GBJ11-89 three editions. The main contents are as follows: (1) the traditional incremental dynamic analysis method is improved. Seismic wave is selected according to the characteristic period of ground motion and the method input of random seismic wave is selected. The effect on the dispersion of IDA results is compared. It is concluded that the dispersion of IDA result obtained by selecting seismic wave input according to the characteristic period of earthquake motion is obviously lower. On this basis, seismic wave input is selected according to different characteristic period calculation methods, and the effect on IDA results is compared. It is suggested that the calculation method in FEMA-450 should be selected first for seismic wave input. (2) through the analysis of the provisions of the new and old codes on the design of reinforced concrete frames, the provisions on seismic material, site category and seismic calculation are compared. With the development of seismic code, it is found that the strength design in the elastic stage of building structure is strengthened at the same time. More attention is paid to the ductility design of the building structure in the elastic-plastic stage. (3) according to the earthquake resistance code of the 10th edition, the tenth edition and the edition No. 89, the structural design and model establishment of the same reinforced concrete structure are carried out, and the improved incremental dynamic analysis method is used to analyze the ductility of the same reinforced concrete structure. The results of plastic hinge distribution and IDA curve of three structures are compared, and the collapse reserve coefficient and the vulnerability of IDA curve are compared. It is concluded that the 10th edition structure has better seismic performance than that of the 01 edition Jian-89 version structure. (4) the steel braced aseismic strengthening scheme is adopted for the structure of the 10th edition version of the Jian-89 edition which has poor seismic performance. By comparing the seismic behavior of the two structures before and after strengthening, it is concluded that steel bracing can effectively enhance the bearing capacity of the two structures to some extent, but reduce the ductility of the structure itself.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU375.4
【参考文献】
相关期刊论文 前10条
1 张鑫r
本文编号：2238786
本文链接：https://www.wllwen.com/kejilunwen/sgjslw/2238786.html
