Damping for tall structures

Abstract

A tall structure comprising two vertical parts is provided with a vertically orientated damping element, wherein the damping element is arranged to damp relative vertical movement between the two parts.

1 . A tall structure comprising two vertically extending parts and a vertically orientated damping element, wherein the damping element is arranged to damp relative vertical movement between the two parts and the height of the vertically extending parts extends above the damping element. 
   
   
       2 - 3 . (canceled) 
   
   
       4 . A structure as claimed in  claim 1 , wherein the parts comprise a core and a perimeter column. 
   
   
       5 . A structure as claimed in  claim 1 , wherein the structure includes a horizontal element extending from one of the parts, with the damping element arranged to damp relative movement between the horizontal element and the other vertical part. 
   
   
       6 . (canceled) 
   
   
       7 . A structure as claimed in  claim 5 , wherein the horizontal element is a horizontally extending outrigger between the vertical parts. 
   
   
       8 . A structure as claimed in  claim 5 , wherein the horizontal element is relatively thin in width in the horizontal direction perpendicular to the direction of extension of the elements. 
   
   
       9 . (canceled) 
   
   
       10 . A structure as claimed in  claim 8  wherein the structure is a tall building and height of the horizontal element extends across more than one storey of the building. 
   
   
       11 . A structure as claimed in  claim 5 , wherein the horizontal element forms part of a wall that divides a floor area. 
   
   
       12 . (canceled) 
   
   
       13 . A structure as claimed in  claim 1 , comprising a plurality of damping elements arranged at the same height about the vertical parts. 
   
   
       14 . A structure as claimed in  claim 13 , wherein the damping elements join a core to a plurality of perimeter columns. 
   
   
       15 . A structure as claimed in  claim 13 , comprising a plurality of horizontal elements that support at least some of the plurality of damping elements, each of the horizontal elements having an associated damping element. 
   
   
       16 - 17 . (canceled) 
   
   
       18 . A structure as claimed in  claim 1 , wherein the vertically extending parts are closely spaced. 
   
   
       19 . A structure as claimed in  claim 18 , wherein the damping element is connected between the vertically extending parts by means of relatively short horizontal elements, or brackets. 
   
   
       20 . A structure as claimed in  claim 19 , comprising a plurality of damping elements at the same height about the vertically extending parts. 
   
   
       21 . (canceled) 
   
   
       22 . A structure as claimed in  claim 18 , wherein the vertical parts comprise a load bearing part and a non-load bearing part, the non-load bearing part being provided for damping purposes. 
   
   
       23 . (canceled) 
   
   
       24 . A structure as claimed in  claim 1  comprising several sets of damping elements, the sets being at different heights on the structure. 
   
   
       25 . (canceled) 
   
   
       26 . A structure as claimed in  claim 1 , wherein the structure is a building over 60 m in height, preferably over 80 m in height. 
   
   
       27 . (canceled) 
   
   
       28 . A method of providing damping for a tall structure, the structure having two vertically extending parts, the method comprising providing a vertically acting damping element which damps relative movement between the two parts, wherein the height of the vertically extending parts extends above the damping element. 
   
   
       29 - 56 . (canceled) 
   
   
       57 . A building comprising two parts which may move vertically relative to one another when the building sways, and a damper arranged between the two parts, which is capable of damping that relative vertical movement, wherein the height of the vertically extending parts extends above the damping element. 
   
   
       58 - 60 . (canceled) 
   
   
       61 . A structure as claimed in  claim 1 , wherein the damping element is located in a mid-height section of the structure. 
   
   
       62 . A tall structure comprising two vertically extending parts and a vertically orientated damping element, wherein the damping element is arranged to damp relative vertical movement between the two parts and the damping elements are located part way up the height of the structure.