Panel for maintaining high pressure strength at any point

Abstract

The present invention relates to a high-strength panel used as flooring in a clean facility, such as a semiconductor clean room. The high-strength panel comprises rim ribs, each having a tapered surface, formed at a respective rim portions of the panel. A main reinforcing rib divides an interior space defined by the rim potions into a plurality of square lattice sections. A plurality of auxiliary reinforcing ribs is arranged in each of the square lattice sections to divide the lattice sections into sub-sections, wherein a plurality of circular recesses is diagonally arranged in each sub-section, Each circular recess is surrounded by a circular rib. Accordingly, a supporting force for resisting a vertical load and an eccentric load is enhanced. Thus, the strength of the panel for resisting a concentrated load is increased by distributing the load downwardly concentrated at a specific location of the panel throughout the entire panel.

1 . A high-strength panel comprising: 
 rim ribs formed at respective rim portions of the panel and each provided with a tapered surface to have a downwardly increasing thickness;    a main reinforcing rib serving as a partition to divide an interior space defined by the rim portions into a plurality of square lattice sections;    a plurality of auxiliary reinforcing ribs arranged in a respective one of the square lattice sections to divide the square lattice section into 4 rows and 4 columns, i.e. into sixteen sub-sections; and    a plurality of circular recesses formed at a bottom layer of each sub-section defined by the auxiliary reinforcing ribs,    whereby the panel achieves an enhancement in supporting force resistant to vertical load and eccentric load applied thereto.    
   
   
       2 . The high-strength panel as set forth in  claim 1 , wherein the rim portions are centrally formed with a predetermined number of rim lattice sections, and each rim lattice section is divided into four sub-sections by the auxiliary reinforcing ribs.  
   
   
       3 . The high-strength panel as set forth in  claim 1 , wherein the circular recesses, formed at a lower surface of the sub-section defined by the auxiliary reinforcing ribs, are surrounded by circular ribs, respectively.  
   
   
       4 . A high-strength panel for enhancing a supporting force for resisting a vertical load and an eccentric load applied thereto, comprising: 
 a plurality of square lattice sections formed by a plurality of main reinforcing ribs intersecting one another;    a plurality of auxiliary reinforcing ribs formed in each of the plurality of square lattice sections, wherein the plurality of auxiliary reinforcing ribs are arranged to divide each square lattice section into sub-sections; and    a plurality of circular ribs formed in each sub-section, wherein each circular rib has a circular recess.    
   
   
       5 . The high-strength panel of  claim 4 , further comprising rim ribs formed at edges of the high-strength panel.  
   
   
       6 . The high-strength panel of  claim 4 , wherein a height of the plurality of auxiliary reinforcing ribs is one-half a height of the plurality of main reinforcing ribs.  
   
   
       7 . The high-strength panel of  claim 4 , wherein a height of the plurality of auxiliary reinforcing ribs is one-half to one-third a height of the plurality of main reinforcing ribs.  
   
   
       8 . The high-strength panel  claim 4 , wherein the plurality of auxiliary reinforcing ribs divides each square lattice section into sixteen sub-sections of four rows and four columns.  
   
   
       9 . The high-strength panel of  claim 4 , wherein the circular recesses are formed in a 2×2 array in each sub-section.  
   
   
       10 . The high-strength panel of  claim 4 , wherein the circular recesses are diagonally aligned in each sub-section.  
   
   
       11 . The high-strength panel of  claim 4 , wherein the circular recesses are arranged in each sub-section to define a diamond-shaped supporting recess in the center of the sub-section.  
   
   
       12 . The high-strength panel of  claim 11 , wherein a diagonal length of the diamond-shaped recess is shorter than a diameter of the circular recess.  
   
   
       13 . The high-strength panel of  claim 5 , wherein the rim ribs are respectively formed at rim portions of the high-strength panel.  
   
   
       14 . The high-strength panel of  claim 5 , wherein the rim ribs comprise a tapered surface having a downwardly increasing thickness.  
   
   
       15 . The high-strength panel of  claim 13 , wherein the rim portions are formed with a predetermined number of rim lattice sections.  
   
   
       16 . The high-strength panel of  claim 15 , wherein each rim lattice section is divided into four sub-sections by the auxiliary reinforcing ribs.  
   
   
       17 . A high-strength panel for enhancing a supporting force for resisting a vertical load and an eccentric load applied thereto, comprising: 
 a plurality of square lattice sections formed by a plurality of main reinforcing ribs intersecting one another;    a plurality of auxiliary reinforcing ribs formed in each of the plurality of square lattice sections, wherein the plurality of auxiliary reinforcing ribs are arranged to divide each square lattice section into sub-sections;    a plurality of circular recesses formed in a 2×2 array in each sub-section; and rims ribs respectively formed at rim portions of the high-strength panel.    
   
   
       18 . The high-strength panel of  claim 17 , wherein the circular recesses are diagonally aligned in each sub-section.  
   
   
       19 . The high-strength panel of  claim 17 , wherein the circular recesses are arranged in each sub-section to define a diamond-shaped supporting recess in the center of the sub-section.  
   
   
       20 . The high-strength panel of  claim 17 , wherein the rim ribs comprise a tapered surface having a downwardly increasing thickness.