粗料石砌体房屋振动台试验研究

发布时间：2018-04-12 19:20

本文选题：石结构 + 振动台试验　；参考：《东南大学》2015年硕士论文

【摘要】：我国东南地区盛产石材,该地区村镇建筑以石砌体结构为主。调研发现该地区的石结构房屋施工质量良莠不齐,大多未按规范要求设置圈梁、构造柱,抗震能力较差。为找到既适合当地做法,又满足抗震要求的设计方法,本文采用本课题组研发的内嵌钢筋石楼板,并采用本文提出的在纵横墙交接处钻孔插筋代替构造柱的方法,砌筑了一幢1/2缩尺的二层单跨石结构房屋,进行振动台试验。研究此类石结构房屋的抗震性能,分析构造措施对结构抗震性能的影响,并在此基础上提出一些建议供设计和施工参考。本文主要研究内容和研究成果如下：(1)对振动台试验,观察结构在各级地震作用下的破坏形态,分析石砌体结构的抗震薄弱部位,检验采取此类构造措施的石砌体房屋的抗震能力。(2)对结构加速度、位移和应变进行分析,研究不同地震波、不同烈度下试验模型的自振频率、阻尼比变化以及振型等动力特性：分析不同工况下试验模型加速度和位移响应；分析角部钢筋在地震作用下的受力特性及其对结构抗震性能的影响。(3)根据试验结果评价此类无圈梁构造柱体系的石砌体房屋的抗震性能,得出此类石结构房屋满足东南地区7度(0.15g)抗震设防要求。同时对实际石结构房屋的设计和施工提出设计建议,以改善石结构房屋的抗震性能。(4)运用有限元分析软件建立石结构房屋模型,对其进行模态分析和动力时程分析,得出结构各阶模态和自振频率及其在地震作用下的加速度响应,分析其裂缝发展状况,研究其抗震性能,有限元模拟与试验结果基本吻合,可为石砌体结构模拟提供参考。通过对采用构造措施和未采用构造措施的石结构模型的计算对比分析,得出结构角部插筋有效改善了结构的抗震性能。本文的研究成果为我国东南地区的石结构建筑提供了可靠的设计和施工依据,也可为相关规范的编写提供参考。
[Abstract]:The southeast region of China is rich in stone materials, and the main stone structure is the village and town buildings in this area.It is found that the construction quality of stone-structured houses in this area is mixed, most of them are not set up in accordance with the specifications, and the structural columns are poor in aseismic capacity.In order to find a design method which is suitable for local practice and meets the seismic requirements, this paper adopts the method of embedded reinforced stone floor developed by our team, and uses the method proposed in this paper to replace the structural column with drill holes at the junction of vertical and horizontal walls.A two-story single-span stone building with 1 / 2 scale was built and the shaking table test was carried out.The aseismic behavior of this kind of stone structure building is studied, and the influence of structural measures on the seismic performance of the structure is analyzed. On the basis of this, some suggestions are put forward for the reference of design and construction.The main contents and results of this paper are as follows: (1) the shaking table test is conducted to observe the failure pattern of the structure under the action of various levels of earthquakes, and to analyze the weak seismic position of the stone masonry structure.The aseismic capacity of stone masonry buildings with this kind of structural measures is examined. The structural acceleration, displacement and strain are analyzed, and the natural vibration frequencies of the test models under different seismic waves and different intensities are studied.The dynamic characteristics of damping ratio and vibration mode are analyzed. The acceleration and displacement response of the test model under different working conditions are analyzed.Based on the experimental results, the seismic behavior of stone masonry buildings with no ring beam and column structure is evaluated by analyzing the stress characteristics of corner reinforcement subjected to earthquake and its influence on the seismic behavior of structures.It is concluded that this kind of stone structure houses meet the seismic fortification requirements of 7 degrees or 0.15 g in southeast area.At the same time, some design suggestions are put forward for the design and construction of the actual stone structure building to improve the seismic performance of the stone structure building. The finite element analysis software is used to establish the stone structure house model, and the modal analysis and dynamic time history analysis are carried out.Various modes and natural frequencies of the structure and its acceleration response under earthquake action are obtained. The development of cracks is analyzed and its seismic performance is studied. The finite element simulation is in good agreement with the experimental results, which can be used as a reference for the structural simulation of stone masonry.Based on the comparison and analysis of the stone structure model with and without structural measures, it is concluded that the structural corner reinforcement can effectively improve the seismic performance of the structure.The research results of this paper provide a reliable basis for the design and construction of stone structures in southeast China, and can also provide a reference for the compilation of relevant codes.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU36;TU352.11

【相似文献】