A bamboo based crash barrier for roads or highways

Abstract

A crash barrier for road highways is designed to provide a progressively increasing resistance to impact, which is designed with the sturdy fabrication of creosote-treated and HDPE-coated bamboo poles. Which is weatherproof and long-lasting, highly resistive against fungal, borer, termite attacks and working on using flexibility to dissipate the kinetic energy from a collision. In one embodiment a beam ( 2 ) comprising a club of three separate poles 2 ( a ), 2 ( b ), 2 ( c ) is mounted on upright posts ( 1 ) consisting of three poles 1 ( a ), 1 ( b ), 1 ( c ) placed triangularly at an angle of 60° with each other with connecting elements ( 3, 4 ). The rear elements ( 4 ) are of bamboo with node and are relatively stiff while the front elements ( 3 ) are hollow tubular and therefore more easily deformed. The deformable connections are fabricated with high tension GI wire rope 7 , fixed with U clamps 9, and locked with crimping locks 8.

1 . A crash barrier for roads or highways, comprising of:
 at least a horizontal beam ( 2 ) and a vertical post ( 1 ) connected with deformable components ( 4 );   wherein said horizontal beam ( 2 ) construction comprises a club of three separate poles ( 2 ( a ),  2 ( b ),  2 ( c )) supported on said vertical posts one above the other vide fabrication of creosote oil-treated bamboo poles through the vacuum pressure impregnation and coated with high-density polyethylene;   wherein a front cushioning element ( 3 ) is provided an the front face of horizontal beam;   wherein the assembly of said horizontal beam ( 2 ) and vertical post ( 1 ) is carried out with high tension MS bolts, struts, nuts, and washer connectors that has deformable components between beam ( 2 ) and posts ( 1 ); wherein the said connectors and spacer ( 4 ) elements are deformable components, thereby providing a progressively increasing resistance to impact by a vehicle on the said beam ( 2 ); and   wherein said construction of the deformable components are fabricated with high tension GI wire rope ( 7 ) tightened with a winch, fixed with U clamps ( 9 ), and end locked with crimping locks ( 8 ).   
     
     
         2 . The crash barrier as claimed in  claim 1 , wherein the bamboo poles used in said vertical post ( 1 ), beam ( 2 ), front cushioning element ( 3 ), and spacer ( 4 ), are treated with creosote oil through a vacuum pressure impregnation plant and coated with HDPE in order to make them weatherproof, and increase compressive strength of the crash barrier elements. 
     
     
         3 . The crash barrier as claimed in  claim 1 , wherein the said beam and post are configured to dissipate the kinetic energy from a collision of a vehicle. 
     
     
         4 . The crash barrier as claimed in  claim 1 , wherein the said beam ( 2 ) and post ( 1 ) is configured to allows the posts to move, flex, or even for beam ( 2 ) to bend enough to reform its original shape during the collision and cushion the vehicle. 
     
     
         5 . The crash barrier as claimed in  claim 1 , wherein the fabrication of the crash barrier transfers the force of the vehicle to the front cushioning element ( 3 ), spacers ( 4 ), beam elements ( 2 ), posts ( 1 ), and finally to the end terminals or anchors. 
     
     
         6 . The crash barrier as claimed in  claim 1 , wherein the creosote-treated and HDPE coated bamboo poles act as the main front cushioning ( 3 ) and said spacer ( 4 ) elements give cushion, flexures, and tension working and minimizes a vehicle snagging on the posts upon impact. 
     
     
         7 . The crash barrier as claimed in  claim 1 , wherein the said beam ( 2 ) is made from three creosote treated and HDPE coated bamboo poles  2 ( a ),  2 ( b ),  2 ( c ) joined on each other vertically with high tensile M10 bolts ( 14 ) with washer ( 12 ) and nut ( 11 ). 
     
     
         8 . The crash barrier as claimed in  claim 1 , wherein the said post ( 1 ) is made from three creosote treated and HDPE coated bamboo poles  1 ( a ),  1 ( b ),  1 ( c ) placed triangularly which makes an angle of 60° with each other joined with high tensile M10 bolts ( 13 ) with washer ( 12 ) and nut ( 11 ). 
     
     
         9 . The crash barrier as claimed in  claim 1 , wherein each post ( 1 ) has deformable connections ( 4 ) between the beam ( 2 ) construction and the posts ( 1 ), which is more deformed than the other elements in a horizontal direction transverse to the length of the beam ( 2 ) construction. 
     
     
         10 . The crash barrier as claimed in  claim 1 , wherein said horizontal beam ( 2 ) and cushion element ( 3 ) are reformable element set upon a post ( 1 ) parallel to the road. 
     
     
         11 . The crash barrier as claimed in  claim 1 , wherein each deformable connection element-spacer ( 4 ), comprises a hollow tubular open-ended bamboo structure treated with creosote oil and coated with HDPE. 
     
     
         12 . The crash barrier as claimed in  claim 1 , wherein beam ( 2 ) is mounted on deformable connecting elements ( 4 ) and acts as a semi-rigid crash barrier. 
     
     
         13 . The crash barrier as claimed in  claim 1 , wherein said beam ( 2 ) is secured to each of said posts ( 1 ) by a bolt ( 6 ) traversing to beam  2 ( b ) to post  1 ( c ) through the spacer ( 4 ). 
     
     
         14 . The crash barrier as claimed in  claim 1 , wherein the poles  1 ( a ),  1 ( b ),  1 ( c ) constituting said post ( 1 ) and said beam ( 2 ) elements  2 ( a ),  2 ( b ),  2 ( c ) have a constant diameter, the diameter of said beam elements being smaller than the diameter of the post elements and the spacer ( 4 ) and front cushioning element ( 3 ) diameter is greater than both beam and post elements. 
     
     
         15 . The crash barrier as claimed in  claim 1 , wherein the said crash barrier beam and post-assembly consist of hydraulic jaws for bamboo poles fixing and fixed drills for joining works.