CAJ | 학술논문

将现有高等级公路直线段应急改成飞机跑道是特殊情况下维持空运保障能力的有效途径之一,但公路直线段包含的中小跨径桥梁将会影响飞机起降.针对目前高等级公路中广泛存在的13 m与10 m跨径的标准多跨简支预应力梁桥梁,运用有限元分析软件LS-DYNA分析了预应力桥梁的初始状态及飞机在预应力桥梁上着陆时对桥梁的冲击响应,据此得到了高等级公路13 m和10 m跨径的桥梁在飞机直接着陆情况下的动力响应.计算表明13 m跨径的预应力桥梁承受某型飞机直接降落相对冒险,所得到的有关结论可供今后在高等级公路直线段中选择应急飞机跑道路段参考.
장현유고등급공로직선단응급개성비궤포도시특수정황하유지공운보장능력적유효도경지일,단공로직선단포함적중소과경교량장회영향비궤기강.침대목전고등급공로중엄범존재적13 m여10 m과경적표준다과간지예응력량교량,운용유한원분석연건LS-DYNA분석료예응력교량적초시상태급비궤재예응력교량상착륙시대교량적충격향응,거차득도료고등급공로13 m화10 m과경적교량재비궤직접착륙정황하적동력향응.계산표명13 m과경적예응력교량승수모형비궤직접강락상대모험,소득도적유관결론가공금후재고등급공로직선단중선택응급비궤포도로단삼고.
Changing an existing straight segment of a high rank road into an airstrip for urgency is one effective means to maintain wartime airlift safeguard capacity, but taking off and landing of a plane would be affected by middle and small-span bridges of a straight segment of high rank roads.Here, standard multi-span simply supported 13-meter-span prestressed bridges were studied, which widely existed in high rank roads.The initial status of a prestressed bridge was analyzed with LS-DYNA.The strike response of the bridge due to plane landing was also analyzed using the same means.Hereby, bearing capacity of the bridge with 13 or 10 meter span was calculated when a plane directly landed.The result indicated that the 13-meter-span bridge was comparatively risky to support direct landing of some plane.The relevant conclusions could be reference for choosing emergent plane runway among straight segments of high rank roads in future.