真空联合堆载预压软基加固机理分析及工程应用  

Analysis of soft foundation consolidation mechanism for vacuum-surcharge preloading and its engineering application

作　　者：谢晓华[1,2,3] 周永章[1,2] 张澄博[1,2] 吴清华[1,2] 周晓芳[1,2] 卢强[1,2] 赵广伦[3] 

机构地区：[1]中山大学地球科学系,广东广州510275 [2]中山大学地球环境与地球资源研究中心,广东广州510275 [3]广州航海高等专科学校,广东广州510330

出　　处：《四川建筑科学研究》2010年第5期112-116,共5页Sichuan Building Science

摘　　要：结合珠江三角洲某高速公路真空联合堆载预压试验段工程,介绍了真空联合堆载预压法,分析了该法用于加固软弱地基的机理,重点阐述了真空联合堆载施工工艺流程及其设计要点。通过加固前后实测资料和软土土层土工试验结果对比表明,该法能在较短时间内有效地使珠江三角洲的深厚软土地基得到不同程度的加固,能缩短工期、消除工后沉降,达到节省投资的目的。Vacuum-surcharge preloading is introduced via outlining the mechanism of the test application on strengthening the soft foundation and engineering of the highway in PRD. Furthermore,the process of the vacuum-surcharge preloading and its design essence is clearly stated in the following stage. The comparison between the measured data and the result of the test for soft geotechnical layer indicates that the vacuum-surcharge preloading can make the deep soft soil foundation consolidated at different levels effectively in a short time in PRD. As a result,this contributes a lot in shortening the construction period and eliminating the post-construction settlement. Moreover,it can save the investment cost.

关 键 词：真空联合堆载 加固机理 施工技术 软基加固 

分 类 号：TU447[建筑科学—岩土工程]