本文關鍵詞：基于正交設計的模型試驗相似材料的配比試驗研究，，由筆耕文化傳播整理發(fā)布。

基于正交設計的模型試驗相似材料的配比試驗研究

Research on similar material proportioning test of model test based on orthogonal design

[1] [2] [3] [4] [5]

DONG Jin-yu,YANG Ji-hong,YANG Guo-xiang,WU Fa-quan,LIU Hong-shuai（1.North China University of Water Resources and Electric Power,Zhengzhou 450011,China;2.Key Laboratory of Engineering

[1]華北水利水電學院,河南鄭州450011; [2]中國科學院地質與地球物理研究所中國科學院工程地質力學重點實驗室,北京100029; [3]中國地震局工程力學所,黑龍江哈爾濱150080

文章摘要：在前人相似材料研究的基礎上,應用正交設計方法,以（鐵粉＋重晶石粉）/骨料、鐵粉/（鐵粉＋重晶石粉）、黏結劑濃度、石膏含量為4個因素,每個因素設置5個水平,設計了25組材料配比方案,進行了稱重、單軸壓縮、劈裂和直剪試驗,獲得了不同配比相似材料的密度、抗壓強度、抗拉強度、彈性模量、泊松比、內摩擦角和黏聚力等物理力學性質指標。試驗結果表明：不同配比相似材料的物理力學參數分布的范圍較大,能夠滿足不同性質巖體模型試驗對巖體相似材料的要求;采用極差分析法分析了各因素的敏感性,發(fā)現(xiàn)（鐵粉＋重晶石粉）/骨料對試件密度、內摩擦角起主要控制作用,黏結劑濃度對試件的抗壓強度、抗拉強度、彈性模量、黏聚力起主要控制作用;并作出了各因素對相似材料物理力學參數影響的直觀分析圖,分析了各因素對相似材料參數的影響規(guī)律。

Abstr：On the basis of previous research of similar material,the weight ratio of iron ore powder plus barite powder to aggregates,the weight ratio of iron ore powder to iron ore powder plus barite powder,adhesive concentration and gypsum content were selected as four factors,and every factor had five variable levels.According to twenty five schemes of material mixture ratio designed by orthogonal design method,laboratory uniaxial compression test,split test and direct shear test were conducted.Physical and mechanical indexes of similar material such as unit weight,compressive strength,tensile strength,elastic modulus,poisson ratio,internal friction angle and cohesion were obtained under different material mixture ratios.The tests results show that physical and mechanical indexes of similar material vary in a large range and can meet the needs for rock similar material in different physical model test of rock slope.The sensitivity of every factor was analyzed by using extremum difference method.The results show that the weight ratio of iron ore powder plus barite powder to aggregates has control effect on density and internal friction angle of the specimen,and adhesive concentration has control effect on compressive strength,tensile strength,elastic modulus and cohesion of the specimen.The relationship between factors and parameters of similar material were studied by direct analysis charts of the factors affecting physical and mechanical indexes of the material.

文章關鍵詞：

Keyword：:orthogonal design method similar material extremum difference analysis sensitivity direct analysis chart

課題項目：國家自然科學基金青年基金資助項目（40702055）; 汶川地震地質災害調查評價資助項目（1212010914029）; 華北水利水電學院高層次人才引進項目

作者信息：會員可見

  本文關鍵詞：基于正交設計的模型試驗相似材料的配比試驗研究，由筆耕文化傳播整理發(fā)布。