边界问题及其对真空预压的影响  

Boundary Problem and Its Influence to Vacuum Preloading

作　　者：高志义[1] 冯军[1] 

机构地区：[1]中交天津港湾工程研究院有限公司港口岩土工程技术交通行业重点试验室 天津市港口岩土工程技术重点试验室,天津300222

出　　处：《岩土工程技术》2014年第5期250-256,共7页Geotechnical Engineering Technique

摘　　要：给出了真空预压区四周开敞式与封闭式边界定义、两者的不同,分析了开敞式边界加固效果优于封闭式边界的原因并以三个实例说明之,给出如何将封闭式转化为开敞式的方法;柔性与刚性密封膜同样可构成开敞式与封闭式边界,讨论了此时两种边界下差别;给出了密封墙和支挡墙的定义、功能、应用范围;讨论了水泥搅拌与旋喷桩单体墙与格栅墙的定义、功能、应用范围,前者只能作为密封墙,后者既可作密封墙也可作支挡墙。In this paper, the definitions of open and closed boundary are presented firstly. The differences of both are dis- cussed. Through three samples,the reason for open type boundary being better than closed boundary in reinforced effect is ana- lyzed. Then,it is shown how to convert closed boundary into open boundary. Secondly, it is present that the flexible and rigid sealing membrane can also made up open and closed boundary. The differences of both are discussed. Thirdly, the definitions of sealing wall and the retaining wall, the function and application scope are given. Finally, the cement wall and the geogrid wall forming by cement mixing pile and jet grouting pile are introduced respectively. Through discussing their definition, function and application scope, the former is only as sealing wall, and the latter is not only as sealing wall but also as retaining wall.

关 键 词：开敞式边界 封闭式边界 柔性与刚性膜 密封墙 支挡墙 真空预压 

分 类 号：TU470[建筑科学—结构工程]