Synthetic deformed bars/post tensioned threadbars and retaining walls

Abstract

A limited displacement, variable location, post tension anchor assembly wherein a post tension thread bar (or a thread bar attached to an SDB) can be displaced following the encapsulation of the anchor assembly in concrete. The displacement movement is in a plane perpendicular to the axis of the thread bar and is limited to the size of the anchor enclosure assembly enclosure. This device provides a mechanism to compensate for placement errors that can occur for field placement of post tension anchor assemblies in concrete structures that heretofore have been unavailable. In addition, following the correct positioning of the thread bar, there is a mechanism provided to allow for remote pressure grouting of the assembly.

What is claimed is: 
     
         128 . A variable location post tension anchor assembly comprising:
 an anchor enclosure encapsulated within a concrete stationary mass   a post tension threadbar attachment device placed within said enclosure   a post tension stressing plate attached to said enclosure   a void means attached to said stressing plate extending out of said cast in place concrete stationary mass   a post tensioned threadbar within said enclosure attached to said post tension threadbar attachment device   a grout tube attached to said enclosure cast into said stationary concrete mass extending out of said concrete mass   
     
     
         129 . The cast in place concrete stationary mass of claim  1 , wherein said stationary concrete mass is a concrete retaining wall foundation. 
     
     
         130 . The anchor enclosure of claim  1 , wherein the enclosure is of sufficient size and volume so that said post tension attachment device can be placed within said enclosure. 
     
     
         131 . The post tension anchor device of claim  1 , wherein said post tension anchor device when placed within said anchor enclosure and can be horizontally displaced or partially rotated within said anchor enclosure. 
     
     
         132 . The post tension anchor device of claim  1 , wherein said post tension attachment device has an integral threaded receptor means to accept a post tension threadbar. 
     
     
         133 . The post tension stressing plate of claim  1 , wherein said post tension stressing plate contact area is larger than the horizontal interface contact area of said post tension stressing plate and said post tension threadbar attachment device. 
     
     
         134 . The post tension stressing plate of claim  1 , wherein said post tension stressing plate includes a void opening allowing for variable location placement for said post tension threadbar through said void. 
     
     
         135 . The void of claim  1 , wherein the diameter or width of said void is larger than the diameter of said threadbar allowing variable location placement for said post tension threadbar placed within said void. 
     
     
         136 . The post tension threadbar of claim  1 , wherein said thread bar end surface deformations corresponding to the threads or equivalent deformations within said post tension threadbar device. 
     
     
         137 . The post tension threadbar of claim  1 , wherein said threadbar can be inserted through said void opening of said stressing plate and through said stressing plate for attachment to said post tension threadbar attachment device. 
     
     
         138 . The grout tube of claim  1 , wherein said grout tube directs flow of pressurized cementatious grout or other suitable synthetic materials into said enclosure through said post tension attachment device and into said void attached to said post tension stressing plate. 
     
     
         139 . The post tension threadbar of claim  1 , wherein said post tension threadbar, said post tension stressing plate, and said post tension threadbar attachment device and comprised of steel or other metal alloys or comprised of polyester, vinyl ester, epoxy and epoxy derivatives, urethane-modified vinyl ester, polyethylene terephthalate, recycled polethylene, E-glass, S-Glass, aramide fiber, carbon fiber, ceramic reinforcement, or a combination thereof. 
     
     
         140 . A variable location post tension anchor assembly comprising the elements of claim  1  additionally comprising:
 a vertically oriented tube void attached to said anchor 
 enclosure extending out of said stationary concrete mass 
 
     
     
         141 . The tube of claim  13 , wherein said tube has sufficient length and diameter to provide an opening to insert either a rigid bar or to direct the flow of cementatious grout into said enclosure. 
     
     
         142 . A precast concrete earth retaining structure comprising:
 a cast in place concrete stationary mass   post tension anchor assemblies cast into said concrete foundation   post tension threadbars attached to said anchor assemblies   an assembly of generally tee shaped precast concrete panels adjacently placed and attached to said foundation by said threadbars   
     
     
         143 . The precast concrete retaining wall of claim  15 , wherein said cast in place concrete mass is a retaining wall foundation. 
     
     
         144 . The precast concrete retaining wall of claim  15 , wherein said anchor assemblies are variable location post tension anchor assemblies. 
     
     
         145 . The precast concrete retaining wall of claim  15 , wherein said post tension threadbars can be horizontally laterally displaced following attachment to said post tension attachment device within said anchor assembly. 
     
     
         146 . The precast concrete retaining wall of claim  15 , wherein said tee shaped panels have a generally vertically disposed planar face with integral perpendicular extrusions protruding from the rear of said planar face in either singular or multiple intervals, said extrusion having integral voids for said post tension threadbars. 
     
     
         147 . The precast concrete retaining wall of claim  15 , wherein said adjacently placed tee shaped panels are post tensioned to said cast in place concrete foundation by tensioning said post tension threadbars. 
     
     
         148 . A precast concrete earth retaining structure comprising:
 a cast in place cast in place concrete stationary mass post tension anchor assemblies cast into said concrete foundation   vertically disposed post tension threadbars secured to said concrete foundation   an assembly of generally tee shaped vertically disposed precast concrete panels horizontally displaced attached to said stationary concrete mass   an array of generally horizontally disposed precast concrete panels between said vertically disposed tee shaped panels   
     
     
         149 . The cast in place concrete stationary mass of claim  21 , wherein said concrete mass is a concrete retaining wall foundation. 
     
     
         150 . The post tension anchor assemblies of claim  21 , wherein said anchor assemblies are variable location anchor assemblies. 
     
     
         151 . The post tension threadbars of claim  21 , wherein said threadbars are threaded into said variable location post tension threadbar attachment devices. 
     
     
         152 . The precast concrete retaining wall of claim  21 , wherein horizontally displaced panels are tee shaped having one or more protrusions extending from the rear of the vertically disposed panel into the earthen backfill. 
     
     
         153 . The precast concrete retaining wall of claim  21 , wherein said horizontally displaced tee shaped panels are post tensioned to said cast in place concrete foundation by tensioning said post tension threadbars. 
     
     
         154 . The precast concrete retaining wall of claim  21 , wherein said horizontally disposed concrete panels are placed between said adjacent tees. 
     
     
         155 . The precast concrete retaining wall of claim  21 , wherein said precast panels bear on said face flange extensions of said horizontally displaced tees.