| 摘要 |
FIELD: construction, particularly piles composed of separable parts. ^ SUBSTANCE: butt joint comprises extension and depression created at lower and upper section ends correspondingly and defined by curvilinear surfaces having constant curvature radii and provided with edging of metal sheets fixedly connected with each other by fixer inserted in aligned orifices created in projection and in depression. Curvilinear projection outline has flat surface. Line of flat and curvilinear surface intersection is spaced a distance from side surfaces of lower pile section having square cross-section and is spaced a distance from side surface of lower pile section with round cross-section, here l is distance from line of flat extension surface and curvilinear extension surface intersection to side surfaces of lower pile section, cm; b is length of lower pile section cross-sectional square dimension, cm; d is round lower pile section cross-sectional diameter, cm; Delta is depth of technological groove for further weld seam creation in metal sheets, which edge ends of upper and lower pile sections, cm; Rb is design pile concrete resistance, MPa; Rsc - design resistance to compression of longitudinal pile reinforcement, MPa; As is longitudinal pile reinforcement area, cm; Rlp is design collapse resistance of metal sheet, which edges extension, MPa. ^ EFFECT: increased reliability of butt joint, elimination of special dolly for lower pile section driving. ^ 1 dwg
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