| 摘要 |
FIELD: civil engineering, erection of floors leaned against walls of building structures made of monolithic reinforced concrete. SUBSTANCE: length of structure is divided into sections separated by deformation joints and concrete is laid by sections. First extreme and internal walls of section are erected and length L of floor is treated with concrete. Prior to concrete laying section of floor is divided into individual bands, extreme bands border on walls, central bands are located in center of section and closing bands are arranged between extreme and central bands. First extreme and central bands are treated with concrete, closing bands are treated with concrete after cooling of extreme and central bands. Prior to concrete laying on extreme and closing bands expansion-shrinkage strips are arranged over entire width and thickness of concrete dividing them along their long side into sections with length Lk and Lex with adhering to condition 15>=Lk>=kh, m; Lk>=Lex>2kh m, where k=0.8-1.5 is correction factor depending on local conditions; hex>=0 is width of extreme band, m; hcl = 0,5-2,5 is width of closing band, m. EFFECT: raised quality and prolonged service life of structures by increase of their crack resistance. 12 dwg |
