Removable Bollard System and Method of Installation

Abstract

An anti-ram removable bollard ( 10 ) assembly and an installation of the same to arrest impacts are provided. The removable bollard assembly comprises a base assembly ( 20 ) and at least a reinforcement member ( 32 a ,32 b ) to be fixedly installed on site, and a removable bollard member to be detachably secured to the base assembly as and when required. A coupling mechanism ( 42,44,48 ) may be provided in the base assembly to engage the removable bollard member. Also, the base assembly may include an I-beam cross-section arrangement ( 22,24,26 ) to provide increased strength to the base assembly. Several base assemblies may be connected by rebars ( 104 ) to form a cohesive installation which restrains movement when any bollard member in the installation is struck. With the cohesive arrangement, a high impact rating may be achieved even with shallow base assemblies.

1 . An assembly comprising:
 a base assembly having a sleeve formed therein and providing a base area in a direction generally perpendicular to the sleeve;   a coupling mechanism disposed in the sleeve; and   a first reinforcement member attached to the base assembly to enlarge the base area, wherein the coupling mechanism is to removably engage the base assembly with a bollard member to be received in the sleeve.   
   
   
       2 . The assembly of  claim 1 , wherein the base assembly comprises an I-beam arrangement comprising:
 a top plate;   a bottom plate; and   an intermediate plate supporting the top plate and the bottom plate, wherein the top plate, the bottom plate and the intermediate plate are attached to the sleeve.   
   
   
       3 . The assembly of  claim 2 , wherein the coupling mechanism comprises a socket which is to receive in engagement a coupling bar provided by the bollard member. 
   
   
       4 . The assembly of  claim 2 , wherein the first reinforcement member is attached to the bottom plate. 
   
   
       5 . The assembly of  claim 4 , further comprising a second reinforcement member which is attached to the top plate. 
   
   
       6 . The assembly of  claim 2 , wherein a height of the sleeve is approximately equal to a height of the base assembly. 
   
   
       7 . The assembly of  claim 2 , wherein a height of the sleeve is substantially greater than a height of the base assembly, and is lesser than a height of the bollard member. 
   
   
       8 . The assembly of  claim 2 , wherein the intermediate plate is perforated to receive a rebar there through. 
   
   
       9 . The assembly of  claim 2 , wherein a length of the first reinforcement member is greater than a length of the base assembly. 
   
   
       10 . The assembly of  claim 1 , wherein the base assembly further comprises a plurality of I-beam arrangements comprising:
 a top plate;   a bottom plate; and   a plurality of intermediate plates arranged at an angle with one another to support the top plate and the bottom plate.   
   
   
       11 . The assembly of  claim 10 , wherein the sleeve is attached to the plurality of intermediate plates. 
   
   
       12 . The assembly of  claim 11 , wherein the plurality of intermediate plates are perforated to receive a plurality of rebars there through. 
   
   
       13 . The assembly of  claim 12 , wherein the coupling mechanism comprises a socket to receive in engagement a coupling bar provided by the bollard member. 
   
   
       14 . An installation comprising:
 a plurality of base assemblies disposed at a predetermined distance from one another, each of the plurality of base assemblies having a sleeve disposed therein and providing a base area in a direction generally perpendicular to the sleeve, wherein said each base assembly comprises:
 a coupling mechanism disposed in the sleeve; 
 a first reinforcement member attached to said each base assembly to enlarge the base area; and 
   a plurality of rebars connecting the plurality of base assemblies to restrain a movement of the plurality of base assemblies.   
   
   
       15 . The installation of  claim 14 , wherein the first reinforcement member of said each base assembly includes a free end spaced apart from an adjacent one of the plurality of base assemblies. 
   
   
       16 . The installation of  claim 15 , wherein the first reinforcement member is disposed along an expected direction of an impact. 
   
   
       17 . The installation of  claim 16 , wherein a first side of said each base assembly is to receive the impact, and the first reinforcement member is disposed on a second opposed side of said each base assembly. 
   
   
       18 . The installation of  claim 15 , wherein said each base assembly comprises an I-beam arrangement comprising:
 a top plate;   a bottom plate; and   an intermediate plate supporting the top plate and the bottom plate, wherein the top plate, the bottom plate and the intermediate plate are attached to the sleeve.   
   
   
       19 . The installation of  claim 18 , wherein the coupling mechanism comprises a socket which to receive in engagement a coupling bar provided by a bollard member. 
   
   
       20 . The installation of  claim 19 , wherein the intermediate plate is perforated there through to receive the plurality of rebars. 
   
   
       21 . The installation of  claim 15 , further comprising a second reinforcement member attached to the top plate, and wherein the first reinforcement member is attached to the bottom plate. 
   
   
       22 . The installation of  claim 15 , wherein a height of the sleeve is approximately equal to a height of said each base assembly. 
   
   
       23 . The installation of  claim 15 , wherein a height of the sleeve is substantially greater than a height of said each base assembly, and is lesser than a height of a bollard member to be received therein. 
   
   
       24 . The installation of  claim 15 , wherein said each of the plurality of base assemblies further comprises a sleeve support member secured to a lower end of the sleeve. 
   
   
       25 . The installation of  claim 24 , wherein the sleeve support member is perforated to receive the plurality of rebars there through. 
   
   
       26 . The installation of  claim 15 , wherein the bollard member is to form part of a street furniture. 
   
   
       27 . The installation of  claim 15 , wherein said each base assembly is installed within about 1.00 m below grade level. 
   
   
       28 . The installation of  claim 15 , wherein said each base assembly further comprises a plurality of I-beam arrangements comprising:
 a top plate;   a bottom plate; and   a plurality of intermediate plates arranged at an angle with one another to support the top plate and the bottom plate.   
   
   
       29 . A method of installation, comprising:
 forming a trench;   disposing a plurality of base assemblies in the trench which are separated from one another, the plurality of base assemblies having a first reinforcement member attached thereto, the first reinforcement member having a free end spaced apart from an adjacent one of the plurality of the base assemblies;   connecting the plurality of base assemblies with a plurality of rebars; and   encasing the plurality of base assemblies and the plurality of rebars.   
   
   
       30 . The method of  claim 29 , further comprising:
 disposing a plurality of bollard members in a plurality of sleeves provided in the plurality of base assemblies; and   securing the plurality of bollard members to the plurality of assemblies using a plurality of coupling mechanisms provided in the plurality of sleeves.   
   
   
       31 . The method of  claim 30 , wherein the trench has a height of between about 0.20 m to about 1.00 m. 
   
   
       32 . The method of  claim 31 , wherein the plurality of bollard members is to form part of a street furniture. 
   
   
       33 . The method of  claim 31 , wherein connecting the plurality of base assemblies with a plurality of rebars further comprising providing the plurality of rebars through the plurality of sleeve support members. 
   
   
       34 . The method of  claim 29 , further comprising:
 providing a plurality of sleeve support members to secure the plurality of sleeves to the plurality of base assemblies.