加氣混凝土承重墻抗震性能試驗與有限元分析
發(fā)布時間：2018-09-07 08:58
【摘要】：在加氣混凝土墻體抗震性能試驗基礎(chǔ)上,采用有限元軟件ABAQUS對加氣混凝土承重墻進行分離式建模計算,并通過spring2連接來考慮砌塊與粘結(jié)劑滑移關(guān)系,并將承載力-位移曲線結(jié)果與加氣混凝土承重墻體試驗曲線進行對比,在初步驗證模擬可行的情況下,進行參數(shù)分析來研究垂直正應(yīng)力、砌塊強度、粘結(jié)劑強度等參數(shù)變化對墻體承載力、變形能力的影響,研究得出軸壓比在0.15-0.33間,墻片破壞形式為剪壓破壞;砌塊強度的變化對墻片水平承載能力的影響較為明顯;而粘結(jié)劑強度的增加,對墻片水平承載能力的影響不明顯,但有可能降低墻片在極限荷載下的水平位移,上述研究成果為加氣混凝土承重墻進一步試驗研究與抗震計算提供必要依據(jù)。
[Abstract]:On the basis of seismic performance test of aerated concrete wall, the finite element software ABAQUS is used to model and calculate separately the aerated concrete bearing wall, and the slip relationship between block and binder is considered by spring2 connection. The results of load-displacement curve are compared with the test curve of aerated concrete load-bearing wall. When the simulation is feasible, the vertical normal stress and block strength are studied by parameter analysis. The influence of bond strength and other parameters on the bearing capacity and deformation capacity of the wall is studied. The results show that the axial compression ratio is between 0.15-0.33, the failure form of the wall is shear compression failure, the influence of the change of the strength of the block on the horizontal bearing capacity of the wall is obvious. However, the increase of the strength of binder has little effect on the horizontal load-carrying capacity of the wall, but it may reduce the horizontal displacement of the wall under the ultimate load. The above research results provide necessary basis for further experimental study and seismic calculation of aerated concrete bearing walls.
【作者單位】： 同濟大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所;
【分類號】：TU37;TU352.11
[Abstract]:On the basis of seismic performance test of aerated concrete wall, the finite element software ABAQUS is used to model and calculate separately the aerated concrete bearing wall, and the slip relationship between block and binder is considered by spring2 connection. The results of load-displacement curve are compared with the test curve of aerated concrete load-bearing wall. When the simulation is feasible, the vertical normal stress and block strength are studied by parameter analysis. The influence of bond strength and other parameters on the bearing capacity and deformation capacity of the wall is studied. The results show that the axial compression ratio is between 0.15-0.33, the failure form of the wall is shear compression failure, the influence of the change of the strength of the block on the horizontal bearing capacity of the wall is obvious. However, the increase of the strength of binder has little effect on the horizontal load-carrying capacity of the wall, but it may reduce the horizontal displacement of the wall under the ultimate load. The above research results provide necessary basis for further experimental study and seismic calculation of aerated concrete bearing walls.
【作者單位】： 同濟大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所;
【分類號】：TU37;TU352.11
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