【作者】 张立；

【导师】 莫海鸿；

【作者基本信息】 华南理工大学 ， 结构工程， 2013， 硕士

【摘要】 模袋砂已被广泛应用于海岸护堤、港口、码头、吹填造陆围堰防护等工程的建设中。但目前对其力学性能的试验与理论研究还有待完善，这一定程度上限制了它在工程中的进一步推广与应用。本文在介绍模袋砂在国内外力学性能试验与理论研究的基础上，通过单轴压缩试验对模袋砂的力学性能进行了研究，并提出模袋砂力学参数的理论计算方法。主要研究内容和成果如下：(1)参考相关文献资料，简要分析了以往模袋砂研究的不足之处，介绍本文主要研究的内容。(2)通过对不同填充度下的模袋砂进行单轴压缩试验，对比单个模袋砂和三个模袋砂单轴压缩试验的破坏形态的差别，分析其产生破坏的原因；并得到其压力—变形关系曲线以及相应的极限压力的大小。(3)分别对松冈元模型和半圆边界模型进行修正，运用修正后的模型分析模袋砂在不同填充度下的力学性能，得出其极限荷载以及准粘聚力；并与试验结果相比较，验证理论计算公式的正确性。更多还原

【Abstract】 Sandbags have been used widely in fields of coast protection dam, port, wharf, landreclamation engineering etc. However, so far，text and theory research on the mechanism ofsandbags has remains to be perfect,which limits its further promotion in the engineering.This article summarizes mechanical properties test and theory research of sandbags athome and abroad. Then, the mechanical property of sandbags was studied through uniaxialcompression tests and the theory of calculation methods of mechanical parameters was putforward.the main contents are listed as follows:First of all, Refer to the relevant literature and give a brief analysis of limitations ofprevious test and theory, introduce the main content of this paper.Then, the uniaxial compression tests on different filling degree both with a singlesandbag and three sandbags are performed to study the stress-strain relation and its limitstrength, its enhancement mechanism and failure mode are analyzed, based on this, combinedwith the relevant constitutive equations, its strength are estimated.Finally, By analyzing two theory models respectively for the mechanical properties ofsandbags under different filling degree, obtain the limit load and equivalent cohesiveforce;And compared with test results, verify the correctness of the theoretical calculationformula.更多还原