Abstract
With respect to the numerous configurations of pipe-framed greenhouse employed at farms in Japan, greater clarity on pipe-frame intensity is required. Therefore, we conducted studies on several pipe-farms at farms and analyzed stress. We also identified the appropriate installation position of tie-bar, which is one of the measures of damage by snow. The maximum stress on the pipe-frame was distributed as follows: grounded part by 1.2 m eave heights, eave part by 1.5 m, and 1.8 m eave heights. By installing the tie-bar at the position of f/8 (on pipe-frame), the maximum stress on the pipe-frame was minimized. When we conducted the load carrying test, wherein the tie-bar was installed at the position of f/8 (on Pipe-frame), the collapse load was increased to approximately 2.3 times than that in the absence of a tie-bar and approximately 1.6 times than when the tie-bar is installed at the position of f/4 (on Pipe-frame). As we studied loads applied on pipe-frames, it evaluated with promising T-band that has sufficiently large drawing tensions.
