本文關(guān)鍵詞：云南少數(shù)民族干欄式房屋抗震加固試驗研究　出處：《北方工業(yè)大學》2017年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 干欄式房屋 梁柱式結(jié)構(gòu) 磚木結(jié)構(gòu) 抗震加固 低周反復(fù)加載試驗 有限元分析

【摘要】：干欄式房屋是具有悠久歷史的古老建筑,是我國古建筑文化的重要組成部分。干欄式房屋主要分布于滇西北、滇西以及滇西南地區(qū),分布區(qū)域抗震設(shè)防烈度多在7度以上,而少數(shù)民族地區(qū)發(fā)展滯后,抗震意識薄弱,房屋缺乏有效的抗震構(gòu)造措施。云南地震災(zāi)害頻率高、強度高,極災(zāi)區(qū)多處于農(nóng)村,多數(shù)干欄式房屋經(jīng)歷過強震而出現(xiàn)不同程度的結(jié)構(gòu)傾斜和構(gòu)件損壞,很難保證在之后的地震災(zāi)害中生存下來,有著巨大的抗震隱患。本文針對干欄式房屋結(jié)構(gòu)抗震性能和加固改造措施展開試驗和數(shù)值模擬研究,研究結(jié)果可對干欄式結(jié)構(gòu)的抗震加固和改造提供有意義的建議。具體工作內(nèi)容和結(jié)論有以下幾個方面:(1)對少數(shù)民族干欄式房屋分布的滇西南部分區(qū)域進行實地調(diào)研和村民訪談,總結(jié)調(diào)研結(jié)果和相關(guān)文獻資料,分析了干欄式房屋和其他房屋的現(xiàn)狀與存在的問題。調(diào)研中發(fā)現(xiàn)部分地區(qū)傳統(tǒng)干欄式木結(jié)構(gòu)以及新興的磚柱干欄式結(jié)構(gòu)存在不同的抗震問題,后者抗剪承載力的不足給該類結(jié)構(gòu)帶來巨大的抗震隱患。(2)選取調(diào)研區(qū)域某磚柱干欄式房屋為研究對象,設(shè)計制作三個原型尺寸的磚柱木梁梁柱式試件,提出外包角鋼加固與碳纖維布加固兩種加固方法,進行低周反復(fù)荷載試驗,研究不同加固方式下試件的荷載位移滯回曲線、極限承載力和延性等抗震性能。試驗結(jié)果表明,磚柱木梁結(jié)構(gòu)抗震性能較差,在水平作用力表現(xiàn)為脆性剪切破壞。兩種加固方法均有效地提高了結(jié)構(gòu)的抗震性能。(3)對未加固磚柱木梁框架和角鋼加固框架進行了非線性有限元分析,結(jié)果與試驗結(jié)果吻合較好,表明混凝土損傷塑性模型可以有效的對這種結(jié)構(gòu)進行有限元分析計算,為該類結(jié)構(gòu)有限元計算提供參考。
[Abstract]:Qianlan house is an ancient building with a long history and an important part of Chinese ancient architectural culture. It is mainly distributed in northwest Yunnan, western Yunnan and southwest Yunnan. The seismic fortification intensity in the distribution area is more than 7 degrees, but the development of minority area is lagging behind, the seismic consciousness is weak, the house lacks effective seismic structural measures. Yunnan earthquake disaster frequency is high, the intensity is high. Most of the quake-hit areas are located in rural areas, most of the dry-hurdle houses have experienced strong earthquakes and appear different degrees of structural tilt and component damage, it is difficult to ensure survival in the subsequent earthquake disaster. In this paper, the seismic behavior and reinforcement measures of dry-column building structure are studied by experiment and numerical simulation. The results of the study can provide meaningful suggestions for seismic reinforcement and reconstruction of dry-column structures. The concrete work contents and conclusions are as follows: 1). Field investigation and villager interviews were carried out in some areas of southwest Yunnan where the houses were distributed in Gan Lan style of ethnic minorities. Summarize the research results and related literature. This paper analyzes the present situation and existing problems of dry-column houses and other houses, and finds out that there are different aseismic problems in traditional dry-column wooden structures and new brick-column dry-column structures in some areas. The lack of shear capacity of the latter brings huge seismic hidden trouble to this kind of structure. (2) A brick column dry column house in the investigation area is selected as the research object, and three prototype sizes of brick column beam beam and column type specimen are designed and manufactured. In this paper, two reinforcement methods, external angle steel reinforcement and carbon fiber sheet reinforcement, are put forward to carry out low cycle repeated load test and to study the hysteretic curve of load displacement of specimens under different reinforcement methods. The experimental results show that the seismic performance of brick column and wood beam is poor. The two reinforcement methods can effectively improve the seismic performance of the structure. The nonlinear finite element analysis of the unstrengthened brick column beam frame and the angle steel reinforced frame is carried out. The results are in good agreement with the experimental results, which indicates that the concrete damage plastic model can be used to analyze and calculate this kind of structure effectively, which provides a reference for the finite element calculation of this kind of structure.
【學位授予單位】：北方工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU352.11

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