發(fā)布時間：2018-09-18 07:09

【摘要】：本課題旨在研究輕鋼與泡沫混凝土兩種材料結合而成的新型組合樓板結構。泡沫混凝土常被作為保溫材料用于建筑結構,其具有輕質(zhì)、保溫及耐火等優(yōu)點,以泡沫混凝土為基本材料與輕鋼組合,基于兩種材料的特性提出了輕鋼與泡沫混凝土組合樓板,并以輕鋼與泡沫混凝土單向板作為基本研究內(nèi)容,此種構件具有輕質(zhì)、高強、抗震性強以及環(huán)保等特點,并解決了組合樓板中防火性能差的弊端。本文利用有限元與力學試驗結合的研究方法,意在明確輕鋼與泡沫混凝土組合單向板的破壞機理,其中研究內(nèi)容主要包括:總結組合板各破壞階段,觀察裂縫開展情況,確定極限承載力,以及不同因素變量對組合板相關力學性能的影響,并為后續(xù)理論完善、公式推導研究工作提供理論依據(jù)。首先對輕鋼與泡沫混凝土組合單向板進行設計,包括截面設計與構件尺寸等,結合有限元軟件對構件進行建立模擬分析模型,繼而對模型受力分析,利用已得到模擬數(shù)據(jù)指導試驗,并用試驗結果驗證模擬的正確性。制作輕鋼與泡沫混凝土組合單向板構件,設計組合板的力學受彎試驗,通過觀察組合板破壞過程,總結組合板各破壞階段。得出組合板以受壓區(qū)泡沫混凝土壓碎為破壞標志,并具備延性破壞特征,整個破壞過程合理。對比模擬與試驗相應數(shù)值,證明有限元在結構分析中的準確性。基于有限元在分析中的準確性,進一步利用其模擬分析了泡沫混凝土密度等級、輕鋼強度、輕鋼布置間距、分布橫向板帶間距和組合板保護層厚度對組合板承載力、整體剛度以及破壞機理的影響。本文所研究的內(nèi)容均不考慮兩種材料的滑移,在制作試驗構件時,設置了充足的抗剪連接件,以減少滑移對結果的影響。
[Abstract]:The purpose of this paper is to study a new type of composite floor structure composed of light steel and foam concrete. Foam concrete is often used as thermal insulation material in building structure. It has the advantages of light weight, heat preservation and fire resistance. Based on the characteristics of two kinds of materials, the composite slab of light steel and foam concrete is put forward, in which foam concrete is used as the basic material and light steel is combined with light steel. Taking the unidirectional slab of light steel and foam concrete as the basic research content, this kind of component has the characteristics of light weight, high strength, strong seismic resistance and environmental protection, and solves the disadvantage of poor fire resistance in the composite floor. The purpose of this paper is to clarify the failure mechanism of composite unidirectional slabs of light steel and foam concrete by means of finite element method and mechanical test. The main contents of the research include: summing up the failure stages of composite slabs, observing the development of cracks, The ultimate bearing capacity and the influence of different factor variables on the related mechanical properties of composite plate are determined, and the theoretical basis is provided for further theoretical improvement and formula derivation. First of all, the composite unidirectional slab of light steel and foamed concrete is designed, including section design and component size, and the simulation analysis model is established with the finite element software, and then the stress of the model is analyzed. The simulation data are used to guide the experiment, and the experimental results are used to verify the correctness of the simulation. The composite unidirectional slab members of light steel and foam concrete were made and the mechanical bending test of composite slab was designed. The failure process of composite plate was observed and the failure stages of composite slab were summarized. It is concluded that the composite slab is damaged by crushing foam concrete in compression zone and has ductile failure characteristics, and the whole failure process is reasonable. The accuracy of finite element method in structural analysis is proved by comparing the corresponding numerical value of simulation and test. Based on the accuracy of finite element analysis, the bearing capacity of composite concrete is further analyzed by using its density grade, light steel strength, light steel arrangement spacing, transverse slab-belt spacing and composite plate cover thickness. The influence of overall stiffness and failure mechanism. In order to reduce the effect of slippage on the results, sufficient shear connectors are set up in order to reduce the effect of slippage on the results.
【學位授予單位】：吉林建筑大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU398.9

【參考文獻】

相關期刊論文 前8條

1 聶建國;王宇航;;基于ABAQUS的鋼-混凝土組合結構纖維梁模型的開發(fā)及應用[J];工程力學;2012年01期

2 張來彩;;國內(nèi)外型鋼混凝土結構設計方法[J];發(fā)展;2011年09期

3 李應權;朱立德;李菊麗;扈士凱;段策;王笑帆;;泡沫混凝土配合比的設計[J];徐州工程學院學報(自然科學版);2011年02期

4 趙維霞;楊萍;許嬋娟;毛仙鶴;;現(xiàn)澆回填用泡沫混凝土研究與制備[J];混凝土;2010年01期

5 江興敏;欒經(jīng)正;;鋼管混凝土結構的發(fā)展和展望[J];工業(yè)建筑;2007年S1期

6 顏雪洲;姚謙峰;;泡沫混凝土力學性能試驗研究[J];工業(yè)建筑;2007年S1期

7 白曉紅;白國良;;新型鋼-混凝土組合結構的應用與展望[J];工業(yè)建筑;2006年S1期

8 聶建國;樊健生;;廣義組合結構及其發(fā)展展望[J];建筑結構學報;2006年06期

相關博士學位論文 前3條

1 王皓磊;新型鋼—混凝土組合結構研究[D];湖南大學;2012年

2 熊耀清;密肋復合墻體損傷演化規(guī)律及損傷模型研究[D];北京交通大學;2008年

3 盧明奇;鋼管混凝土結構三維非線性有限元分析和設計理論的研究[D];天津大學;2005年

相關碩士學位論文 前3條

1 何書明;泡沫混凝土本構關系的研究[D];吉林建筑大學;2014年

2 燕妮;冷彎薄壁型鋼住宅組合樓板的振動及設計準則[D];長安大學;2008年

3 周琰;鋼—混凝土組合結構構件的設計與優(yōu)化研究[D];同濟大學;2008年

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本文編號：2247163