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巨澍朋 ，張文權(quán) ，楊保存 ，楊曉松 ，張勤玲

（塔里木大學(xué) 水利與建筑工程學(xué)院／南疆巖土工程研究中心 ，中國 阿拉爾 843300)

摘   要： 為研究南疆季凍區(qū)地基的抗剪性能 ，提出使用玄武巖纖維改良水泥土進(jìn)行加固的技術(shù)方案 ，進(jìn)行了凍融條件下玄武巖纖維改良水泥土和純土的直剪試驗(yàn) 。結(jié)果表明： 隨著凍融次數(shù) 0、1 、2、3、4 和 5 的依次 增加 ，玄武巖纖維改良水泥土和純土的抗剪強(qiáng)度和黏聚力明顯降低 、內(nèi)摩擦角先減小后增大 ，并且纖維巖纖維 改良水泥土對純土的抗剪性能起著有利影響； 并用 origin 對抗剪強(qiáng)度 、黏聚力和內(nèi)摩擦角進(jìn)行多項(xiàng)式擬合 ，為南疆季凍區(qū)地區(qū)地基集合料選擇提供相關(guān)參考數(shù)據(jù)。

關(guān)鍵詞： 凍融循環(huán)； 玄武巖纖維； 抗剪強(qiáng)度； 黏聚力； 內(nèi)摩擦角

中圖分類號： TU445      

文獻(xiàn)標(biāo)志碼： A      

文章編號： 1005-8249 (2023) 06-0037-04

       DOI : 10. 19860/j.cnki.issn1005-8249.2023.06.006

 

 

JUShupeng , ZHANG Wenquan , YANG Baocun , YANG Xiaosong , ZHANG Qinling

( College of Water Resources and Architectural Engineering/Research Center of Southern Xinjiang

Geotechnical Engineering , Tarim University , Alaery 843300 , China)

Abstract: In order to study the shear performance of the ground in the seasonally frozen area of southern Xinjiang, the technical scheme of using basalt fiber to improve cement-soil reinforcement was put forward. The direct shear tests of basalt fiber to improve cement-soil and pure soil under freeze-thaw conditions were carried out. The results show that the shear strength and cohesion of soil-cement and pure soil improved by basalt fiber decrease obviously and the internal friction Angle decreases first and then increases with the increase of freeze-thaw times of 0, 1, 2, 3, 4 and 5, and the shear property of pure soil improved by basalt fiber has a favorable effect on the soil improved by basalt fiber. Origin is matching for polynomial simulation of shear strength, cohesion and internal friction Angle, which provides relevant reference data for the selection of foundation aggregates in the seasonally frozen area of southern Xinjiang.

Keywords: number of freeze-thaw cycles ; basalt fiber; shear strength; cohesive force;angle of internal friction

?基金項(xiàng)目： 塔里木大學(xué)校長基金項(xiàng)目  ( TDZKQN201815) 。

作者簡介： 巨澍朋  (1987—) , 男 ，碩士 ，講師 ，研究方向： 特殊土地區(qū)道路病害處理與防治。

收稿日期： 2022-10-21