The paper shows the approach toward the calculation of one of the bigger PFRP （Pultruded Fiber Reinforced Polymer） structure realized in high seismic zone, i.e., a covering structure of an historic church stroked an...The paper shows the approach toward the calculation of one of the bigger PFRP （Pultruded Fiber Reinforced Polymer） structure realized in high seismic zone, i.e., a covering structure of an historic church stroked and partially collapsed by earthquake in L＇Aquila （Italy）, the 4 April 2009. The goal regards the analysis and evaluation of seismic performance of that structure made by very light and elastic-brittle material, as FRP material, in a moment in which there is a loss of technical recommendation for specific calculation in seismic field, indeed actually some deepening already present in literature allows only static field. The covering structure is an all FRP spatial-reticular with elements made by pultrusion process, connection plates by bag molding process and steel bolts. The PFRP structure covers more than 1000 meters squares surface with 32 meters height and only 100 kN weight. Detail performance of first part of PFRP structure through mode vibrations and involved percentage mass deduced by numerical approach with discussion of employment＇s perspectives of PFRP material in seismic zones than traditional material are showed.展开更多
拟选用拉挤成型工艺制备的一种轻质高强、耐腐蚀的玻璃纤维夹层板作为封堵板的面板部分。结合封堵板使用时的需要,即面板需具有良好的强度和刚度,且在临战封堵时能较好地抵抗爆炸冲击波,对夹层板进行了平压试验、三点弯试验和爆炸试验...拟选用拉挤成型工艺制备的一种轻质高强、耐腐蚀的玻璃纤维夹层板作为封堵板的面板部分。结合封堵板使用时的需要,即面板需具有良好的强度和刚度,且在临战封堵时能较好地抵抗爆炸冲击波,对夹层板进行了平压试验、三点弯试验和爆炸试验研究。结果表明:夹层板平压承载力峰值为286. 4 k N,整体平压强度为0. 8 MPa;三点弯试验局部破坏时板件承载力峰值为56. 0 k N,整体破坏时承载力峰值为84. 6 k N。夹层板具有较高的强度和刚度。爆炸试验后,夹层板没有残余变形,具有良好的自恢复性能。玻璃纤维拉挤夹层板在许多方面可替代钢结构板或钢混结构板,具有广阔的发展前景。展开更多
文摘The paper shows the approach toward the calculation of one of the bigger PFRP （Pultruded Fiber Reinforced Polymer） structure realized in high seismic zone, i.e., a covering structure of an historic church stroked and partially collapsed by earthquake in L＇Aquila （Italy）, the 4 April 2009. The goal regards the analysis and evaluation of seismic performance of that structure made by very light and elastic-brittle material, as FRP material, in a moment in which there is a loss of technical recommendation for specific calculation in seismic field, indeed actually some deepening already present in literature allows only static field. The covering structure is an all FRP spatial-reticular with elements made by pultrusion process, connection plates by bag molding process and steel bolts. The PFRP structure covers more than 1000 meters squares surface with 32 meters height and only 100 kN weight. Detail performance of first part of PFRP structure through mode vibrations and involved percentage mass deduced by numerical approach with discussion of employment＇s perspectives of PFRP material in seismic zones than traditional material are showed.
文摘拟选用拉挤成型工艺制备的一种轻质高强、耐腐蚀的玻璃纤维夹层板作为封堵板的面板部分。结合封堵板使用时的需要,即面板需具有良好的强度和刚度,且在临战封堵时能较好地抵抗爆炸冲击波,对夹层板进行了平压试验、三点弯试验和爆炸试验研究。结果表明:夹层板平压承载力峰值为286. 4 k N,整体平压强度为0. 8 MPa;三点弯试验局部破坏时板件承载力峰值为56. 0 k N,整体破坏时承载力峰值为84. 6 k N。夹层板具有较高的强度和刚度。爆炸试验后,夹层板没有残余变形,具有良好的自恢复性能。玻璃纤维拉挤夹层板在许多方面可替代钢结构板或钢混结构板,具有广阔的发展前景。
