Building reinforcing method, material and structure

Abstract

A high-ductility material or a high-ductility covering material is disposed on the outer circumferential surface of a member, such as a column, of a structure so as to confine expansion of apparent volume accompanying rupture of the member, to thereby control rupture of the member. The high-ductility material is a fibrous or rubber sheet material. The high-ductility material is disposed in such a manner as to surround the member. Alternatively, the high-ductility material is spirally wound or rolled on the member.

1 . A method for reinforcing a structure comprising: 
 disposing a high-ductility material having an initial elastic modulus lower than an elastic modulus of concrete on an outer circumferential surface of a member of the structure so as to elastically restrain expansion of apparent volume accompanying rupture of the member, to thereby control rupture of the member and support a portion of a load of the structure after rupture of the member.    
   
   
       2 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material comprises a fiber origin or rubber origin sheet material.  
   
   
       3 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material comprises a fiber origin or rubber origin tape-like sheet material is wound spirally on the member while overlapping at overlap portions.  
   
   
       4 . The method for reinforcing a structure according to  claim 1 , wherein an adhesive layer is formed on at least one side of the high-ductility material, and the high-ductility material is affixed to the member via the adhesive layer.  
   
   
       5 . The method for reinforcing a structure according to  claim 3 , wherein the high-ductility material is wound on the member such that the overlap portions are bonded together and/or such that the high-ductility material is bonded to a surface of the member at at least a single zonal region extending along a length direction of the member.  
   
   
       6 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material comprises a fiber origin or rubber origin sheet material and is rolled tightly on the member by a plurality of turns to thereby be rolled in layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       7 . The method for reinforcing a structure according to  claim 6 , wherein the high-ductility material is rolled on the member such that intermediate layers of the high-ductility material are bonded together at at least a single zonal region extending along a length direction of the member.  
   
   
       8 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material comprises a fiber origin or rubber origin tape-like sheet material and is wound spirally while overlapping an overlap portion and is combined with being rolled tightly on the member by a plurality of turns to thereby be rolled in layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       9 . The method for reinforcing a structure according to  claim 8 , wherein the high-ductility material comprises a fiber origin or rubber origin tape-like sheet material and is spirally wound on the member along an overall length of the member while overlapping at overlap portions before or after the high-ductility material is rolled on the member at upper and lower end portions of the member by being rolled tightly on the member by a plurality of turns to thereby be rolled in layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       10 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material is formed through application of a rubber or resin viscous-material to the member.  
   
   
       11 . The method for reinforcing a structure according to  claim 1 , wherein the high-ductility material is disposed such that a cavity or a weak layer is interposed between the high-ductility material and the member.  
   
   
       12 . A configuration for reinforcing a structure comprising: 
 a high-ductility material having an initial elastic modulus lower than an elastic modulus of concrete configured to be disposed on an outer circumferential surface of a member of the structure so as to elastically restrain expansion of apparent volume accompanying rupture of the member, to thereby control rupture of the member and support a portion of a load of the structure after rupture of the member.    
   
   
       13 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material comprises a fiber origin or rubber origin sheet material.  
   
   
       14 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material comprises a fiber origin or rubber origin tape-like sheet material configured to be wound spirally on an outer surface of the member in a fixed and overlapping condition.  
   
   
       15 . The configuration for reinforcing a structure according to  claim 12 , wherein an adhesive layer is formed on at least one side of the high-ductility material, and the high-ductility material is configured to be affixed to the member via the adhesive layer.  
   
   
       16 . The configuration for reinforcing a structure according to  claim 14 , wherein the high-ductility material is configured to be wound on the member such that the overlap portions are bonded together and/or such that the high-ductility material is bonded to a surface of the member at at least a single zonal region extending along a length direction of the member.  
   
   
       17 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material comprises a fiber origin or rubber origin sheet material and is configured to be rolled tightly on the member in a plurality of layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       18 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material comprises a fiber origin or rubber origin tape-like sheet material and is configured to be disposed such that it is wound spirally on an outer surface of the member in a fixed and overlapping condition and is combined with being rolled tightly on the member in a plurality of layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       19 . The configuration for reinforcing a structure according to  claim 18 , wherein the high-ductility material is configured to be spirally wound on the member alone an overall length of the member such that it is wound spirally on an outer surface of the member in a fixed and overlapping condition before or after the high-ductility material is rolled on the member at upper and lower end portions of the member by being rolled tightly on the member in a plurality of layers such that at least a rolling start end portion of the high-ductility material is bonded to a corresponding portion of an outer surface of the member while a rolling termination end portion of the high-ductility material is bonded to a corresponding portion of an underlying layer of the high-ductility material.  
   
   
       20 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material comprises a covering material configured to be formed in a layered condition through application of a rubber or resin viscous-material to the member.  
   
   
       21 . The configuration for reinforcing a structure according to  claim 12 , wherein the high-ductility material is configured to be disposed such that a cavity or a weak layer is interposed between the high-ductility material and the member.  
   
   
       22 . A cored roll of high-ductility material comprising: 
 a core having a predetermined length and an outside diameter; and the high-ductility material having a predetermined length and rolled on the core, the high-ductility material having an initial elastic modulus lower than an elastic modulus of concrete and configured to be disposed on an outer circumferential surface of a member of a structure to elastically restrain expansion of apparent volume accompanying rupture of a member of the structure, to thereby control rupture of the member and support a portion of a load of the structure after rupture of the member; and    a plurality of parting lines drawn on one side of the high-ductility material along a length direction of the high-ductility material, the parting lines configured to enable equal division of a width of the high-ductility material at any one of two or more different pitches.    
   
   
       23 . The cored roll of high-ductility material according to  claim 22 , wherein the parting lines are configured to be visually or tactilely discriminated from one another.  
   
   
       24 . A method for reinforcing a structure comprising: 
 fixedly attaching a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete to an outer circumferential surface of a member of the structure, to thereby support a load of the member after deformation of the member.    
   
   
       25 . A method for reinforcing a structure comprising: 
 disposing a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete inside a facing surrounding wall material around a member of the structure with a cavity interposed between the facing surrounding wall material and the member, to thereby support a load of the member after deformation of the member.    
   
   
       26 . A configuration for reinforcing a structure comprising: 
 a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete configured to be fixedly attached to an outer circumferential surface of a member of the structure to elastically restrain expansion of apparent volume after rupture of the member, to thereby control rupture of the member and support a portion of a load of the structure after rupture of the member.    
   
   
       27 . A configuration for reinforcing a structure comprising: 
 a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete configured to be disposed inside a facing surrounding frame disposed around a member of the structure with a cavity interposed between the facing surrounding frame and the member, to thereby support a load of the member after deformation of the member.    
   
   
       28 . A high-ductility material comprising: 
 a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete configured to be disposed on an outer circumferential surface of a member of a structure to thereby elastically support a load of the member after deformation of the member; and    an adhesive layer formed on at least one side of the high-ductility covering material, the high-ductility material configured to be affixed to the member via the adhesive layer.    
   
   
       29 . A high-ductility material comprising: 
 a high-ductility covering material having an initial elastic modulus lower than an elastic modulus of concrete configured to be disposed on an outer circumferential surface of a member of a structure to thereby elastically support a load of the member after deformation of the member, wherein the high-ductility material is configured to be wound on the member such that overlap portions are bonded together and/or such that the high-ductility material is bonded to a surface of the member at at least a single zonal region extending along a length direction of the member.    
   
   
       30 . A method for reinforcing a structure comprising: 
 disposing a high-ductility material having an initial elastic modulus lower than an elastic modulus of concrete on an outer circumferential surface of a member of the structure with a weak layer or a cavity interposed between the material and the member to restrain expansion of apparent volume accompanying rupture of the member, to thereby control rupture of the member and support a portion of the load of the structure after rupture of the member.    
   
   
       31 . A method for reinforcing a structure comprising: 
 disposing a high-ductility material having an initial elastic modulus lower than an elastic modulus of concrete on a portion of an outer circumferential surface of a member of the structure to elastically restrain expansion of apparent volume accompanying rupture of the member, to thereby control rupture of the member and support a portion of the load of the structure after rupture of the member.    
   
   
       32 . The method for reinforcing a structure according to  claim 11 , wherein said cavity or weak layer substantially comprises air.  
   
   
       33 . The method for reinforcing a structure according to  claim 25 , wherein said cavity is disposed between said high-ductility covering material and said member.  
   
   
       34 . The configuration for reinforcing a structure according to  claim 27 , wherein said high-ductility covering material is disposed on the inner surface of said surrounding frame.