Plantable reinforced earth wall and its block and construction method of reinforced earth wall

Abstract

A large-sized block having a large width, which rapidly constructs a plantable reinforced earth wall using equipment to eliminate worker's physical burden, has a soil filling portion ( 60 ) formed therein and provided with recession planes ( 12, 12 ′) formed at both sides of the front surface ( 10 ) of the block so as to partially expose the soil filling portion ( 60 ) to the front surface of the earth wall so that plants can be grown in the front surface of the vertically constructed earth wall (W), and is not cracked due to the horizontal displacement of the block when the ground is unevenly settled, a plantable reinforced earth wall constructed using the blocks, and a method for constructing the earth wall by vertically stacking crosswise block units (U) obtained by vertically stacking a plurality of the blocks, so that the lower portion of the earth wall is not easily damaged by shearing force applied due to load of the blocks.

1 . A block for constructing a plantable reinforced earth wall comprising: 
 a front surface  10  forming the surface of the earth wall, and a rear surface  20  contacting a reinforced earth;    left and right side surfaces  30  and  30 ′ respectively provided with uneven portions  32  and  32 ′ for connecting the block to neighboring blocks;    an upper surface  40  provided with reinforcing member insertion grooves  44 , into which reinforcing members or anchors for connecting the reinforcing members are inserted;    a lower surface  50  corresponding to the upper surface  40 ; and    connection pin insertion holes (h) formed through left and right sides of the upper and lower surfaces for receiving connection pins (P) to connect the upper and lower blocks,    wherein a soil filling portion  60  is formed through the upper  40  and lower  50  surfaces of the block, and recession planes  12  and  12 ′ for forwardly exposing the soil filling portion  60  when the blocks  10  are vertically stacked crosswise are formed at both sides of the front surface of the block.    
   
   
       2 . The block as set forth in  claim 1 , wherein the soil filling portion  60  includes an upwardly inclined front surface  61 , both vertical side surfaces  62  and  62 ′, and a vertical rear surface  63 , and through holes  64  and  64 ′ are formed through both sides of the block outside the soil filling portion  60 .  
   
   
       3 . The block as set forth in  claim 2 , wherein external force absorption grooves  61   a  and  63   a , the cross sections of which have the shape of a right-angled triangle, are formed in both sides of the soil filling portion  60  for receiving corners of the upper block so as to prevent shearing force, applied from the upper block, from being concentrated on the central portion of the block, which is a crossing portion between the blocks when the blocks are vertically stacked crosswise to form the earth wall and then the ground under the earth wall is unevenly settled.  
   
   
       4 . The block as set forth in  claim 3 , wherein the external force absorption grooves  61   a  and  63   a  at both sides are connected, and additional external force absorption grooves  64   a  are formed at front regions of left and right corners of the upper surface.  
   
   
       5 . The block as set forth in  claim 1 , wherein the connection pin insertion holes (h) have an extended shape having a long radius in the lateral direction of the block.  
   
   
       6 . The block as set forth in  claim 2 , wherein anchor insertion grooves  44 ′ are formed in the lateral direction in the upper surface of vertical ribs  66  formed between the soil filling portion  60  and the through holes  64  and  64 ′.  
   
   
       7 . The block as set forth in  claim 1 , wherein recession planes  22  and  22 ′ are formed at both sides of the rear surface  20  so that the soil filling portion  60  is communicated with the reinforced earth located in the rear of the block.  
   
   
       8 . The block as set forth in  claim 6 , wherein the anchor insertion grooves  44 ′ and the connection pin insertion holes (h) are partially overlapped so that the connection pins (P) directly support the anchors  90  or the reinforcing members  80 .  
   
   
       9 . The block as set forth in  claim 8 , wherein each of the connection pin insertion grooves is structured such that the diameter of the upper portion of the connection pin insertion hole (h) is larger than the diameter of the lower portion of the connection pin insertion hole, and a tapered portion (h 3 ) is formed between the upper expanded portion (h 1 ) and the lower contracted portion (h 2 ) of the connection pin insertion hole.  
   
   
       10 . The block as set forth in  claim 9 , wherein the lower contracted portion (h 2 ) of each of the connection pin insertion holes (h) is a long hole having a slantingly rectilinear cross-section.  
   
   
       11 . A plantable reinforced earth wall constructed by the blocks as set forth in any one of  claims 1  to  9 .  
   
   
       12 . A method for constructing a plantable reinforced earth wall comprising: 
 vertically stacking at least two unit blocks and unifying the unit blocks connection pins to produce block units;    building the first unified block units on a concrete base;    spreading a reinforced earth in the rear of the first built block units, and placing reinforcing members on the reinforced earth such that the reinforcing members are connected to the first built block units and hardening the reinforced earth;    filling soil filling portions of the first built block units with soil and planting herbaceous plants in the soil;    vertically stacking at least two unit blocks and unifying the unit blocks using connection pins to produce block units;    stacking the second unified block units on the first built block units such that the stacked upper and lower block units cross each other;    spreading a reinforced earth in the rear of the second built block units, and placing reinforcing members on the reinforced earth such that the reinforcing members are connected to the second built block units and hardening the reinforced earth; and    filling soil filling portions of the second built block units with soil and planting herbaceous plants in the soil.    
   
   
       13 . The method as set forth in  claim 12 , wherein the height of the upper block units is lower than the height of the lower block units.