【摘要】：砌體結構是目前國內(nèi)外廣泛采用的建筑結構類型之一。相對于其他類型的結構,它具有諸多自身的優(yōu)點,但由于其抗震性能相對較弱,部分砌體結構在抗震設防方面的應用受到了一定的限制。近年來的實際震害調(diào)查結果表明,砌體結構亦可能具有良好的抗震性能,特別是窗下墻先于窗間墻破壞的砌體結構。國內(nèi)外許多學者已在近年來的震害調(diào)查中發(fā)現(xiàn)了這一現(xiàn)象,并根據(jù)調(diào)查結果初步構建了多層砌體結構破壞模式的理論。本論文將通過多層砌體結構整體開洞墻體的試驗研究,驗證目前對多層砌體結構破壞模式的認識,并進一步揭示砌體結構在地震作用下的破壞規(guī)律,為進一步展開理論研究奠定基礎。論文的主要研究內(nèi)容包括:(1)對比選取合理的有限元分析方法,對砌體結構整體開洞墻體進行力學分析,確定三種破壞模式的砌體結構整體開洞墻體的幾何與力學參數(shù),為砌體結構整體開洞墻體的試驗設計提供依據(jù)。(2)按三種破壞模式的設想,制作三片無筋無圈梁多層砌體結構的開洞墻體試件,對其進行擬靜力低周往復水平加載試驗,觀測試件在擬靜力低周往復水平荷載作用下的抗震性能。(3)總結分析試驗數(shù)據(jù),驗證目前根據(jù)震害調(diào)查結果初步建立的多層砌體結構墻體破壞模式理論,進一步定量地揭示多層砌體結構開洞墻體的整體破壞規(guī)律。論文研究成果表明,建立的有限元分析模型能夠準確的反映砌體結構整體開洞砌體在地震作用下的受力性能,預期的三種不同的破壞模式均在試驗中得到了實現(xiàn);目前震害調(diào)查中對多層砌體結構破壞模式的認識得到試驗的驗證;影響多層砌體結構整體開洞墻體破壞模式的主要因素是窗間墻和窗下墻的相對剛度比;這些成果為進一步的理論研究奠定了更好的基礎。
[Abstract]:Masonry structure is one of the types of building structure widely used at home and abroad. Compared with other types of structures, it has many advantages of its own, but because of its relatively weak seismic performance, the application of some masonry structures in seismic fortification has been limited to a certain extent. The results of actual earthquake damage investigation in recent years show that masonry structure may also have good seismic performance, especially the masonry structure with lower window wall before the failure of window wall. This phenomenon has been discovered by many scholars at home and abroad in recent years, and the theory of failure mode of multi-story masonry structure has been preliminarily constructed according to the investigation results. This paper will verify the current understanding of the failure mode of multi-story masonry structure and further reveal the failure law of masonry structure under earthquake through the experimental study on the integral opening wall of multi-story masonry structure. It lays a foundation for further theoretical research. The main research contents of this paper are as follows: (1) the reasonable finite element analysis method is selected to analyze the mechanics of masonry structure with integral opening wall, and the geometric and mechanical parameters of the whole opening wall of masonry structure with three failure modes are determined. (2) according to the assumption of three failure modes, three specimens of multi-story masonry wall with no reinforcement and no ring beam are made, and the quasi-static low-cycle reciprocating horizontal loading test is carried out on it, and the results are as follows: (1) the experimental results are as follows: (1) according to the assumption of three failure modes, the experimental results are as follows: (1) The seismic behavior of the specimen under quasi-static low cyclic horizontal load is observed. (3) the experimental data are summarized and analyzed to verify the failure mode theory of multi-story masonry structure, which is established preliminarily according to the results of earthquake damage investigation. Furthermore, the whole failure law of multi-story masonry structure with opening wall is revealed quantitatively. The research results show that the finite element analysis model can accurately reflect the mechanical performance of masonry structures with openings under earthquake, and the three expected failure modes are realized in the test. At present, the recognition of the failure mode of multi-story masonry structure in earthquake damage investigation has been tested and verified, and the main factors affecting the failure mode of multi-story masonry structure are the relative stiffness ratio of the wall between the windows and the wall under the window, the main factors affecting the failure mode of the multi-story masonry structure. These achievements lay a better foundation for further theoretical research.
【學位授予單位】：西安建筑科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU364;TU312.3

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本文編號：2431282