- 摘 要
-
（新疆大學(xué)建筑工程學(xué)院， 烏魯木齊 830047）
［摘要］針對土坯這一具有拉壓不同模量的材料進(jìn)行試驗研究，討論土坯磚和泥漿試塊的拉壓力學(xué)性能受尺寸效應(yīng)的影響。試驗結(jié)果顯示，生土材料制備的土坯磚具有較明顯的拉壓不同模量性質(zhì)，且受到尺寸效應(yīng)的影響。根據(jù)試驗數(shù)據(jù)選取合適的屈服準(zhǔn)則，通過屈服包絡(luò)面分析尺寸效應(yīng)對土坯材料強(qiáng)度的影響。其結(jié)果表明，生土材料在摻和麥秸稈纖維后在抗壓彈性模量上受尺寸效應(yīng)影響較小，但抗拉彈性模量依然存在較明顯的尺寸效應(yīng)。
［關(guān)鍵詞］土坯； 拉壓不同模量； 尺寸效應(yīng)； 屈服準(zhǔn)則
中圖分類號：TU313， TU361文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)02-0082-05
Experimental study on tensile and compressive mechanical properties of adobe brick and mud specimens
Yuan Fang, Hushitaer Niyaze, Zhao Zhiyue, Wei Lingling
(College of Architecture Engineering, Xinjiang University, Urumqi 830047, China)
Abstract:The experimental study was conducted on the adobe materials with different tension-compression modulus to discuss the influence of size effect on the mechanical properties of adobe brick and mud specimens. The experimental results show that adobe brick made of earth has obvious properties of different tension-compression modulus, and is affected by size effect. According to the experimental data, the appropriate yield criterion was selected, and the influence of size effect on the strength of adobe material was analyzed by the yield envelope surface. The results show that the size effect on the compressive elastic modulus of earthen materials is less when it is mixed with wheat straw fiber, but the size effect is still obvious on the tensile elastic modulus.
Keywords:adobe; different tension-compression modulus; size effect; yield criterion
*國家自然科學(xué)基金項目（51468060）。
作者簡介：員方，博士研究生，Email:YF_Eva@qq.com。
