（1 海南大学土木建筑工程学院， 海口 570228； 2 海口经济学院建筑工程学院， 海口 571127；3 吉林建筑工程大学土木工程学院， 长春 130118)

［摘要］秸秆草砖作为一种新兴环保建筑材料，以它为材料建造的房屋在我国新农村建设中已有推广应用，但目前关于秸秆草砖力学性能研究还没有系统性成果。对长×宽×高尺寸为500mm×400mm×380mm水稻秸秆草砖进行了受压性能试验，得到水稻秸秆草砖的荷载-位移曲线，并与其他文献的水稻秸秆草砖试验结果进行对比，得到了不同放置方式、加载面积、压缩边尺寸和密度下水稻秸秆草砖的应力-应变关系曲线。结果表明，水稻秸秆草砖的极限承载力和弹性模量与初始密度、加载面面积、压缩边尺寸和放置方式均有关，并通过数值拟合得到水稻秸秆草砖的极限承载力和弹性模量的计算表达式，且拟合公式计算结果和试验结果的误差约在±5%左右，两者吻合较好。

［关键词］水稻秸秆草砖； 荷载-位移曲线； 极限抗压强度； 弹性模量

中图分类号：TU522文献标识码：A文章编号：1002-848X(2017)07-0075-05

Experimental research on mechanical properties of rice straw bales

Sun Yuansong1, Cao Baozhu1, Wang Fang2, Nie Hongxin3

(1 College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China; 

2 College of Architecture Engineering, Haikou College of Economic, Haikou 571127, China; 

3 College of Civil Engineering,  Jilin Jianzhu University, Changchun 130118, China)

Abstract:Straw bale is a new green construction material and has been applied in building construction in new countryside construction of China.However, there is no systematic research result on mechanical properties of straw bale. The compression performance experiments on rice straw bales with size of 500mm×400mm×380mm were studied, and the load-displacement curves were obtained. The results were compared with experimental results on rice straw bales in other literatures to obtain the stress-strain curves of rice straw bales with different placing ways, loading areas, compression-side lengths and densities. Results show that the ultimate bearing capacity and elastic modulus of rice straw bales are related to initial density, loading area, compression-side length and placing way. Meanwhile, the calculation formulas of the ultimate bearing capacity and elastic modulus of rice straw bales are put forward through numerical fitting. The error between the calculated results of fitting formulas and the experimental results is about ±5%, and the two results are in good agreement.

Keywords:rice straw bale; load-displacement curve; ultimate compressive strength; elastic modulus

*国家自然科学基金（51368016），海南省自然科学基金（20155211）。

作者简介：孙园淞，硕士研究生，助理工程师，Email: 250814967@qq.com。