A Reinforced Efficiency To Transfer Compressive Load Of Beam-Column Joint In Yingxian Wooden Pagoda

Yingxian ancient wooden pagoda is a flat-form tall building, which was formed by the superposition of monolayer temples. The height of 67.31 meters made it encountered two unprecedented puzzles : Firstly, with the height increased whopping, wind resisting and aseismatic capability become the main question of the whole structure; secondly, because of the weight increased unconventionally, members of the lower 1~3 floors hold overloading perpendicular to grain and they brought large vertical deformation. It lead that the whole structure's compress deformation developed sequentially.Yingxian Wooden pagoda has favorable aseismatic capability, as it used similar modern core-in-core structure, and fixed many batter brace make it become modern rigid reinforced floors in every hidden floor , and slope of bearing post made it that the level and uprightness frame integrate tightly. Under the deadweight, every structural floors form centripetal force. Those earthquake resistant measures resist many the strong destroy of earthquake in history.First of all, the structural characteristic and essential of damages were introduced. Secondly the efficiency factor of how much the compression stress perpendicular to grain is more than the design value was calculated. Thirdly, the main reason that members were made too large deformation and serious damage was pointed out. The key technologies that control wooden pagoda vertical compressive deformation were conducted. For the members that have high damnification and were lacking of bearing capacity need be replaced. Northeast larch that has high strength and corrosion resistance is the prime timber, but this timber is easy to crack, so their crack resistance need studied. Simplified result of Earthquake effects indicate that earthquake resistant capacity are obviously scarce and need to be reinforced.Secondly, Combining with the timber one-dimensional structural characters, the dissertation bring forward the technology that GFRP stick and steel bar reinforce the timber members whose compression perpendicular to grain have excess load and discuss the craftwork how to do the reinforced members. The...