%0 Journal Article %1 desantis1983large %A DeSantis, Philip %A Long, Robert %D 1983 %K ANALYSIS Tower Transmission %T LARGE DISPLACEMENT ANALYSIS OF GUYED X TRANSMISSION TOWERS %X A line of transmission towers extending from Anchorage to Fairbanks , Alaska has been designed using a highly flexible X frame. A s upporting structure which can "give " and redistribute the heavy wind and ice loading has long been recognized to be efficient in this e nvironment. This structure has posed a difficult analytical problem because it has a pinned base and is guyed with a load balancing yoke on each side. The configuration of the legs and the s lende r members which are typically used , make the structure susceptible to buckling. Despite these problems , the structure has a habit of standing up without its required analytical foundation . Because of the problems associated with the structure , it was decided to s tudy the tower ' s behavior before a detailed analysis was required for bidding . The Union Metal Manufacturing Company felt that a nonlinear analysis of this structure would add to the credibility of their proposal to fabricate these towers . Some staff members had some previous experience with this type of tower and had seen full scale tests . They were able to add some insight in setting up the finite element model. Two approaches using ANSYS were considered and compared to verify the results. The first was a large displacement analysis with stress stiffening and initial strain. The second was a slow dynamics ana1ysis to handle the ins tabilities due to the guyed support system . Both of these approaches produced reasonable results which will be discussed in this paper .

@article{desantis1983large, abstract = {A line of transmission towers extending from Anchorage to Fairbanks , Alaska has been designed using a highly flexible X frame. A s upporting structure which can "give " and redistribute the heavy wind and ice loading has long been recognized to be efficient in this e nvironment. This structure has posed a difficult analytical problem because it has a pinned base and is guyed with a load balancing yoke on each side. The configuration of the legs and the s lende r members which are typically used , make the structure susceptible to buckling. Despite these problems , the structure has a habit of standing up without its required analytical foundation . Because of the problems associated with the structure , it was decided to s tudy the tower ' s behavior before a detailed analysis was required for bidding . The Union Metal Manufacturing Company felt that a nonlinear analysis of this structure would add to the credibility of their proposal to fabricate these towers . Some staff members had some previous experience with this type of tower and had seen full scale tests . They were able to add some insight in setting up the finite element model. Two approaches using ANSYS were considered and compared to verify the results. The first was a large displacement analysis with stress stiffening and initial strain. The second was a slow dynamics ana1ysis to handle the ins tabilities due to the guyed support system . Both of these approaches produced reasonable results which will be discussed in this paper .}, added-at = {2020-04-08T20:07:49.000+0200}, author = {DeSantis, Philip and Long, Robert}, biburl = {https://www.bibsonomy.org/bibtex/29b1e19d0f0789efbfe44f332715b7a91/ceps}, interhash = {feed3fe72c602486da184ac3a3a2b104}, intrahash = {9b1e19d0f0789efbfe44f332715b7a91}, keywords = {ANALYSIS Tower Transmission}, timestamp = {2023-12-21T15:05:58.000+0100}, title = {LARGE DISPLACEMENT ANALYSIS OF GUYED X TRANSMISSION TOWERS}, year = 1983 }