Sound insulation wall, lowest sound insulation panel, and base plate

摘要

An object of the present invention is to provide a structure that enables maintenance inspection of an anchor bolt on the side of a road from a road side while suppressing a decrease in sound insulation. A plurality of longitudinal rib plates (24A, 24B) are erected on a base plate (14) along a road extending direction. The longitudinal rib plates 24A and 24B are both disposed on the private land side with respect to any of the anchor bolts 28A to 28H inserted into the plurality of bolt holes of the base plate 14. Among the plurality of sound insulation panels, the lowermost sound insulation panel disposed in the lowermost layer is formed with a notch cut in the longitudinal direction and height direction above the base plate 14 so as to penetrate in the thickness direction . The lowermost-layer sound insulation panel includes cover members 35A and 35B that move closer to the private land than any of the anchor bolts 28A to 28H and close the opening of the notch. [Selected figure] Figure 7