Study on the Installation Technology of the Pile Head Treatment Device for Minor Diameter Rigid Pile Vertical Static Load Test

During static load test, the pile body is likely to have the problem of eccentric compression. Engineering practice suggests that the key of static load test lies in the avoidance of pile eccentric compression, the precise control of pile driving pressure, and accurate measurement of vertical deformation of the pile by dial indicator, especially for minor diameter plain concrete piles. Therefore, this paper made an improvement in the traditional static load test device, developed an installation technology of the pile head treatment device for vertical static load test of minor diameter rigid embankment pile regarding the special-shaped pile, and introduced the technology in terms of technical principles, scope of application, technical features, construction technique and operating points.