Highway sound barrier with high reliability

The utility model belongs to the field of expressways, and particularly relates to a high-reliability expressway sound barrier which comprises a main body, a splicing installation mechanism is arranged on one side of the main body, the splicing installation mechanism comprises a splicing block, a splicing groove is formed in the inner side of the splicing block, and first fixing holes are formed in the two sides of the splicing block; through the structural design of the main body, the splicing mounting mechanism, the splicing blocks, the splicing grooves, the first fixing holes, the base, the fixing pieces, the mounting holes and the second fixing holes, a splicing and fixing function is provided for the sound barrier, and the problems that the use range is limited due to the fact that the highway section is long and the splicing effect of the sound barrier is poor, and the sound barrier cannot be conveniently spliced are solved. The problems that the sound barrier collapses and loosens due to the fact that