Method and arrangement for producing a foundation element in the ground

Abstract

The invention relates to a method and an arrangement for producing a foundation element in the ground using a jet grouting device, wherein a jet grouting rod of the jet grouting device is introduced into the ground and a hardenable suspension is injected under pressure into the surrounding ground, wherein the foundation element is produced in the ground, and spaced apart from a place of introduction of the jet grouting rod at least one elongate measuring element is introduced into the ground, with which measurement values are detected when producing the foundation element by the jet grouting device. According to the invention provision is made in that as measuring element a deformable hose is used which is filled with a measuring liquid, and in that as measurement values changes of state of the measuring liquid, in particular a pressure and/or a filling level, are detected in the hose.

1 .- 11 . (canceled) 
     
     
         12 . A method for producing a foundation element in the ground using a jet device,
 wherein
 a jet grouting rod of the jet device is introduced into the ground and a hardenable suspension is injected under pressure into the surrounding ground, wherein the foundation element is produced in the ground, and 
 spaced apart from a place of introduction of the jet grouting rod at least one elongate measuring element is introduced into the ground, with which measurement values are detected when producing the foundation element by the jet grouting device, wherein as measuring element a deformable hose is used, 
   wherein
 the deformable hose is filled with a measuring liquid, 
 as measurement values changes of state of the measuring liquid, in particular a pressure and/or a filling level in the hose, are detected, 
   and
 at an upper end of the hose a measuring means is arranged, by which at least one change of state of the measuring liquid is detected. 
   
     
     
         13 . The method according to  claim 12 ,
 wherein   the hose is introduced into the ground approximately parallel to the foundation element to be produced.   
     
     
         14 . The method according to  claim 12 ,
 wherein   initially a bore to introduce the hose is produced in the ground and   in that subsequently the foundation element is produced.   
     
     
         15 . The method according to  claim 12 ,
 wherein   the distance between the hose and the jet grouting rod is chosen such that the foundation element reaches close up to the hose.   
     
     
         16 . The method according to  claim 12 ,
 wherein   the jet grouting rod of the jet grouting device is rotated and displaced vertically to produce a pile-shaped foundation element.   
     
     
         17 . The method according to  claim 12 ,
 wherein   the hose is unwound from a hose drum and introduced into the ground and   subsequently the hose is filled under pressure with the measuring liquid.   
     
     
         18 . The method according to  claim 12 ,
 wherein   a measuring means comprising a pressure sensor and/or a filling level sensor is used.   
     
     
         19 . An arrangement for producing a foundation element in the ground, in particular for carrying out a method according to  claim 12 , with
 a jet grouting device having a jet grouting rod with which, by injecting a suspension into the ground, the foundation element can be produced in the ground, and   spaced apart from a place of introduction of the jet grouting rod at least one elongate measuring element is introduced into the ground, with which measurement values can be detected when producing the foundation element by the jet grouting device,   wherein as measuring element a deformable hose is used,   
       wherein
 the deformable hose is filled with a measuring liquid, 
 a measuring means is provided, with which changes of state of the measuring liquid, in particular a pressure and/or a filling level in the hose, can be detected, and 
 at an upper end of the hose a measuring means is arranged, by which at least one change of state of the measuring liquid is detected. 
 
     
     
         20 . The arrangement according to  claim 19 ,
 wherein   the measuring means is connected to a computer unit in which the detected measurement values are stored and/or can be analyzed.   
     
     
         21 . The arrangement according to  claim 19 ,
 wherein   the measuring means and/or the computer unit is connected to a control means for controlling the jet grouting device.