STRAIGHT STRUCTURES AND CONSTRUCTION METHODS FOR STRAIGHT STRUCTURES

Abstract

The invention relates to a straight structure on weak soil and a method of constructing a straight structure on weak soil. In a straight structure on weak soil, where the surface will be used as a road or railway, the maximum settlement and the amount of settlement are reduced when the depth of soil improvement below the surface is made shallow. The straight structure (A) includes a foundation structure (1) below the surface soil (GL)S and a road embankment structure (2) on top of the foundation structure (]). Foundation structure (1) is a soil improvement foundation (3) in which soil improvement is carried out on the surface layer of weak soil (S). The foundation of the land (3) includes the body of the land-building grid (4) with the lower end surface (4A) reaching a predetermined depth (HI) (< 4na) below the land surface (GL). The landing foundation structure (2) is a land-building landing foundation (5) obtained by carrying out land improvement on the high-quality soil of the landing foundation structure through mixing and stirring solid materials and high-quality soil.