【摘要】：混凝土多孔磚作為一種新型砌塊材料,具有強度高、自重輕、保護環(huán)境等優(yōu)點,越來越多的應(yīng)用于砌體結(jié)構(gòu)承重墻。眾所周知,砌體結(jié)構(gòu)墻體裂縫是個不可避免的問題,這個問題一直困擾著廣大研究人員。在這方面,傳統(tǒng)砌體結(jié)構(gòu)墻體裂縫的研究已相對成熟,對于使用混凝土多孔磚這種新型砌塊材料的墻體的研究相對來說還處于探索階段。為此,本文采用有限元分析方法,運用ANSYS大型通用有限元軟件對混凝土多孔磚墻體在靜荷載作用下的開裂問題進行數(shù)值模擬分析。本文首先介紹了國內(nèi)外有關(guān)砌體結(jié)構(gòu)裂縫的研究概況,以及有限元模擬有關(guān)的文獻,借鑒數(shù)值模擬方面的經(jīng)驗。闡述砌體結(jié)構(gòu)裂縫類型和成因,其中包含由荷載產(chǎn)生裂縫的原因。其次對一棟采用混凝土多孔磚墻體的多層砌體結(jié)構(gòu)進行現(xiàn)場檢測,獲得第一手的檢測數(shù)據(jù)。該混凝土多孔磚墻體為無配筋結(jié)構(gòu),局部出現(xiàn)斜裂縫。運用回彈法檢測多孔磚和砌筑砂漿的強度,發(fā)現(xiàn)該墻體砌筑砂漿強度極低,基本沒強度,初步分析墻體出現(xiàn)裂縫跟此有極大關(guān)系。最后對檢測中出現(xiàn)裂縫的混凝土多孔磚墻體進行有限元數(shù)值模擬,從砂漿強度和砌塊強度對墻體開裂荷載的影響進行模擬,通過對模擬結(jié)果的分析得出砌筑砂漿強度過低容易導(dǎo)致墻體開裂,并且多孔磚強度對墻體開裂的影響更明顯,我們可以從提高砌塊強度方面入手來加強現(xiàn)代砌體結(jié)構(gòu)的質(zhì)量。
[Abstract]:As a new type of block material, concrete porous brick has many advantages, such as high strength, light weight and environmental protection. It is more and more used in the bearing wall of masonry structure. As we all know, the wall crack of masonry structure is an inevitable problem, this problem has been puzzling the vast number of researchers. In this respect, the research on the wall cracks of traditional masonry structure has been relatively mature, and the research on the wall with concrete porous brick, a new type of block material, is still relatively in the exploratory stage. In this paper, the finite element analysis method is used to simulate the cracking problem of concrete porous brick wall under static load by using ANSYS software. This paper first introduces the research situation of masonry structure crack at home and abroad, and the literature about finite element simulation, and draws lessons from the experience of numerical simulation. This paper describes the types and causes of cracks in masonry structures, including the causes of cracks caused by loads. Secondly, a multi-story masonry structure with concrete porous brick wall is tested on the spot, and the first-hand test data are obtained. The concrete porous brick wall is a non-reinforced structure with partial oblique cracks. The strength of porous brick and masonry mortar is tested by rebound method. It is found that the strength of masonry mortar of this wall is extremely low and basically no strength. The initial analysis of cracks in the wall is closely related to this. Finally, the finite element numerical simulation of the concrete porous brick wall with cracks is carried out, and the influence of mortar strength and block strength on the cracking load of the wall is simulated. Through the analysis of simulation results, it is concluded that too low strength of masonry mortar can easily lead to wall cracking, and the influence of the strength of porous brick on wall cracking is more obvious. We can enhance the quality of modern masonry structure by improving the strength of masonry block.
【學(xué)位授予單位】：吉林建筑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU364;TU522.3

【參考文獻】

相關(guān)期刊論文 前10條

1 李迎濤,江世永,劉興遠;砌體結(jié)構(gòu)房屋挑梁下縱橫墻應(yīng)力的有限元分析[J];四川建筑科學(xué)研究;2002年02期

2 劉振宇,葉燎原,潘文;等效體積單元(RVE)在砌體有限元分析中的應(yīng)用[J];工程力學(xué);2003年02期

3 吳曉寧;;淺論砌體裂縫產(chǎn)生的原因及防治措施[J];科技創(chuàng)新與應(yīng)用;2014年09期

4 朱彥鵬,王秀麗;甘肅省自行車賽場賽道下磚混房屋墻體裂縫的分析與處理[J];建筑結(jié)構(gòu);2002年04期

5 王達詮,武建華;砌體RVE均質(zhì)過程的有限元分析[J];重慶建筑大學(xué)學(xué)報;2002年04期

6 王述紅,唐春安,朱浮聲,朱萬成;砌體結(jié)構(gòu)開裂過程細觀損傷數(shù)值模型及其分析方法[J];建筑結(jié)構(gòu)學(xué)報;2003年02期

7 劉杰;張超;;房建工程當中砌體裂縫形成的原因及防治措施[J];門窗;2013年07期

8 文蕾;于鑫浩;;砌體結(jié)構(gòu)房屋墻體開裂的控制措施[J];黑龍江科技信息;2011年13期

9 王天嵩;曹志偉;王亞斌;;淺談砌體裂縫的技術(shù)分析與處理[J];建筑與預(yù)算;2014年09期

10 趙煒;;磚砌體裂縫預(yù)防和治理方法[J];建筑與預(yù)算;2013年04期

相關(guān)博士學(xué)位論文 前1條

1 李妍;混凝土多孔磚墻體裂縫控制的相關(guān)力學(xué)性能研究[D];吉林大學(xué);2011年

，

本文編號：2369748