Prefabricated wall element for tower construction, and tower construction

Abstract

The invention relates to a prefabricated wall element for a tower construction, essentially of concrete, arranged to form one of several wall portions of a building formed by circumferential shell portions of one of several shell portions stacked on each other, wherein the wall element is constituted by a substantially flat sheet portion comprising a pair of opposite sides intended to run substantially horizontally in the building and a pair of opposite sides intended to run in a direction forming a predetermined angle to the horizontal plane in the building, and along which sides the wall element includes compressive and tensile load absorbing pillar portions and is intended to be connected to adjacent wall elements. The invention also relates to a tower construction, a mobile antenna system and a wind power plant.

1 . A prefabricated wall element for a tower construction, comprising:
 a wall element essentially of concrete, arranged to form one of several wall portions of a building formed by circumferential shell portions of one of several shell portions stacked on each other,   the wall element being constituted by substantially a flat sheet portion comprising a pair of opposite sides intended to run substantially horizontally in the building and a pair of opposite sides intended to run in a direction forming a predetermined angle to the horizontal plane in the building, and along which sides the wall element includes compressive and tensile load absorbing pillar portions and is intended to be connected to adjacent wall elements.   
     
     
         2 . A wall element according to  claim 1 , wherein the wall element further comprises a substantially horizontally running compressive and tensile load absorbing strut portions. 
     
     
         3 . A wall element according to  claim 1 , wherein the pillar portions comprises pillar channel portions running in the longitudinal direction of the pillar portion. 
     
     
         4 . A wall element according to  claim 1 , wherein the strut portions comprises strut channel portions running in the longitudinal direction of the strut portion. 
     
     
         5 . A wall element according to  claim 1 , wherein said circumferential shell portions are connected by means of rigid bar elements running in the channel portions. 
     
     
         6 . A wall element according to  claim 5 , wherein said bar elements are stretchably arranged in the pillar channel portions. 
     
     
         7 . A wall element according to  claim 4 , wherein at least one rigid bar element is stretchably arranged in the respective strut channel portion. 
     
     
         8 . A wall element according to  claim 1 , wherein the pillar portions of the wall elements are arranged to be releasably locked to adjacent pillar portions of wall element by means of locking elements for the formation of said building. 
     
     
         9 . A wall element according to  claim 3 , wherein the wall elements are arranged to be connected by means of cast concrete in the channel portions. 
     
     
         10 . A wall element according to  claim 1 , wherein the concrete of the wall element is high performance concrete composed of cement and ballast with a weight ratio between amount of water and amount of cement, vct, being lower than 0,39. 
     
     
         11 . A wall element according to  claim 10 , wherein the composition of the high performance concrete comprises a mixture of 10-20% sharp sand, and/or 1-5 percentage by volume of aerogel and/or slag in glass phase and/or mineral fibres such as coal, silicate and/or basalt fibre. 
     
     
         12 . A wall element according to  claim 10 , wherein said high performance concrete has a tensile strength greater than 10 MPa. 
     
     
         13 . A wall element according to  claim 10 , wherein said high performance concrete has a compressive strength greater than 70 MPa. 
     
     
         14 . A wall element according to  claim 1 , wherein the pillar portions have an extension in the range of 5-15 metre. 
     
     
         15 . A tower construction comprising:
 at least one prefabricated wall element comprising a wall element essentially of concrete, arranged to form one of several wall portions of a building formed by circumferential shell portions of one of several shell portions stacked on each other,   the wall element being constituted by substantially a flat sheet portion comprising a pair of opposite sides intended to run substantially horizontally in the building and a pair of opposite sides intended to run in a direction forming a predetermined angle to the horizontal plane in the building, and along which sides the wall element includes compressive and tensile load absorbing pillar portions and is intended to be connected to adjacent wall elements.   
     
     
         16 . A mobile antenna system comprising:
 a tower construction including at least one prefabricated wall element comprising a wall element essentially of concrete, arranged to form one of several wall portions of a building formed by circumferential shell portions of one of several shell portions stacked on each other,   the wall element being constituted by substantially a flat sheet portion comprising a pair of opposite sides intended to run substantially horizontally in the building and a pair of opposite sides intended to run in a direction forming a predetermined angle to the horizontal plane in the building, and along which sides the wall element includes compressive and tensile load absorbing pillar portions and is intended to be connected to adjacent wall elements,   and communication equipment arranged in the upper part of the tower construction.   
     
     
         17 . A mobile antenna system according to  claim 16 , wherein the tower construction has a height in the range of 25-50 m. 
     
     
         18 . A wind power plant comprising:
 a turbine,   a plurality of turbine blades connected to the turbine, and   a tower construction arranged to support the turbine,   the tower construction including at least one prefabricated wall element comprising a wall element essentially of concrete, arranged to form one of several wall portions of a building formed by circumferential shell portions of one of several shell portions stacked on each other,   the wall element being constituted by substantially a flat sheet portion comprising a pair of opposite sides intended to run substantially horizontally in the building and a pair of opposite sides intended to run in a direction forming a predetermined angle to the horizontal plane in the building, and along which sides the wall element includes compressive and tensile load absorbing pillar portions and is intended to be connected to adjacent wall elements.   
     
     
         19 . A wind power plant according to  claim 18 , wherein the tower construction has a height in the range of 60-140 m. 
     
     
         20 . A wall element according to  claim 14 , wherein the pillar portions have an extension in a range of 8-13 m.