Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Load Tests on Grouted Guy Anchors and Tower Footings, Oregon Border-Mead 750-Kv D-C Transmission Line Pacific Northwest-Pacific Southwest Intertie
Eight field pullout tests on grouted guy anchors and 3 types of transmission tower footings in alluvial, granular soil indicated that anchors and footings would resist loads equal to or greater than computed design loads. These tests were conducted to help solve foundation design problems for the proposed Oregon Border-Mead 750-kv d-c Transmission Line. Pull loads were applied to 3 guy anchors, 2 BPA steel pressed-plate footings, 1 steel grillage footing, and 2 anchor bar footings consisting of a concrete cap on 4 anchor bars grouted in the soil. For soils similar to those at the test site and considering 0.5 in. as maximum allowable horizontal or vertical movement, the following was concluded: (1) Guy anchors of 11- or 15-ft long No. 11 deformed reinforcing bars grouted in 5-in.-dia vertical or 45-deg angle holes had uplift resistances of 80 kips for vertical anchors and 68 kips for the 45-deg anchor. (2) Anchor-bar footings with 5- and 8-ft long No. 8 anchor bars had uplift resistances of 80 and 72 kips respectively. (3) Steel grillage footing withstood a load of 180 kips. (4) BPA pressed-plate footing successfully withstood the 24-kip design load, but due to bolt and sling failures, lateral capabilities above 24 kips were not determined. (Author)
Load Tests on Grouted Guy Anchors and Tower Footings, Oregon Border-Mead 750-Kv D-C Transmission Line Pacific Northwest-Pacific Southwest Intertie
Eight field pullout tests on grouted guy anchors and 3 types of transmission tower footings in alluvial, granular soil indicated that anchors and footings would resist loads equal to or greater than computed design loads. These tests were conducted to help solve foundation design problems for the proposed Oregon Border-Mead 750-kv d-c Transmission Line. Pull loads were applied to 3 guy anchors, 2 BPA steel pressed-plate footings, 1 steel grillage footing, and 2 anchor bar footings consisting of a concrete cap on 4 anchor bars grouted in the soil. For soils similar to those at the test site and considering 0.5 in. as maximum allowable horizontal or vertical movement, the following was concluded: (1) Guy anchors of 11- or 15-ft long No. 11 deformed reinforcing bars grouted in 5-in.-dia vertical or 45-deg angle holes had uplift resistances of 80 kips for vertical anchors and 68 kips for the 45-deg anchor. (2) Anchor-bar footings with 5- and 8-ft long No. 8 anchor bars had uplift resistances of 80 and 72 kips respectively. (3) Steel grillage footing withstood a load of 180 kips. (4) BPA pressed-plate footing successfully withstood the 24-kip design load, but due to bolt and sling failures, lateral capabilities above 24 kips were not determined. (Author)
Load Tests on Grouted Guy Anchors and Tower Footings, Oregon Border-Mead 750-Kv D-C Transmission Line Pacific Northwest-Pacific Southwest Intertie
H. J. Gibbs (Autor:in)
1966
54 pages
Report
Keine Angabe
Englisch
BPA section of pacific coast intertie traverses variety of terrain
| Engineering Index Backfile | 1967
Load Transfer Mechanism of Small-Diameter Grouted Anchors
| British Library Conference Proceedings | 2010
| British Library Conference Proceedings | 2001