中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2014, Vol. 33 ›› Issue (1): 60-63.DOI: 10.3969/j.issn.1674-0696.2014.01.14

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高速公路软土地基加固效果数值模拟

赵亮1,王昌贤2,王俊杰2   

  1. 1. 核工业西南勘察设计研究院有限公司,四川成都610061 ;2. 重庆交通大学问海学院,重庆400074
  • 收稿日期:2012-10-22 修回日期:2013-12-18 出版日期:2014-02-15 发布日期:2015-01-22
  • 作者简介:赵亮(1987 一) ,男,重庆人,硕士,主要从事路基结构设计与灾害治理方面的研究。E-rnail: zhaoliangl well@ 163. com

Numerical Simulation for Reinforcement Effect of Highway Soft Foundation

Zhao Liang 1, Wang Changxian2, Wang Junjie2   

  1. 1. Southwest Geotechnical & Oesign Institute of China Nuclear Industry , Chengdu 610061 , Sichuan , China; 2. School of River & Ocean Engineering , Chongqing Jiaotong University , Chongqing 400074 , China
  • Received:2012-10-22 Revised:2013-12-18 Online:2014-02-15 Published:2015-01-22

摘要: 以杭瑞高速公路贵州遵义一毕节段软土地基处理工程为依托,针对碎石桩加固、CFG 桩加固以及碎石桩与 CFG 桩联合加固三种不同软土路基加固形式,利用PLAXIS 有限元软件建立数值模拟模型,计算位移、桩间土应力, 对比分析了三种方法的加固效果及经济性。研究表明:碎石桩加固、组合桩加固、CFG 桩加固三种加固地基的最大 坚向位移分别为0.569 , 0.056 , 0.035 m; 最大水平位移分别为0.317 , 0.069 , 0.054 m; 造价分别为8480.27 , 9776.08 , 11216.08 元。说明CFG 桩加固效果最好,而组合桩加固地基具有经济优势。

关键词: 碎石桩加固地基, CFG 桩加固地基, 碎石桩与CFG 桩组合加固地基

Abstract: Based on the foundation condition associated with Zunyi to Bijie section , HangRui highway in Guizhou Province , China , three foundation treatments including gravel pile reinforcement , cement fly-ash gravel (CFG) pile reinforcement , and gravel pile combined with CFG pile reinforcement , were studied by finite element software PLAXIS. The simulation models were developed to compute the displacement and the stress of pile-soil. And the reinforcement effect and economic benefit of these three treatments were then compared. The results indicate that the maximum vertical displacements are O. 569 m for gravel pile , 0.056 m for gravel pile combined with CFG pile and O. 035 m for CFG pile. The maximum horizontal displacements are O. 317 m, 0.069 m and 0.054 m, respectively. And the costs are 11216.08 RMB , 9776.08 RMB and 8480.27 RMB , respectively. It indicates that the CFG pile performs best , but the gravel pile combined with CFG pile is the most econonllC

Key words: gravel pile strengthening foundation, CFG pile strengthening foundation, gravel pile and CFG pile combined to reinforce foundation

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