| 摘要 |
PURPOSE:To secure a board member firmly to the concrete body side without causing shearing breakdown or pressure breakdown of the board member, by fastening a plate inserted at an anchor bolt inserting position of the board member. CONSTITUTION:Many board members 14 composed of inorganic thermal insulation material are secured through an anchor bolt 12 to the inside of concrete body 10. A plate 16 previously formed with an insertion hole 16a having larger inner diameter than that of the anchor bolt is inserted into an anchor bolt insertion recess made in the board member 14. A receiving unit 20 is driven on the rear face of the insertion hole 16a, and a tightening nut 26 is driven through a spring member 24 at the projecting end of the anchor bolt 12. Consequently, breakdown of the board member 14 due to over tightening of nut can be prevented, and warping of the board member 14 due to differential thermal stress can be absorbed through compressible deformation of the spring 24. |
