CAJ | 학술논문

建立刚架拱桥空间有限元模型,分析了增大不同位置横梁截面对结构静力和动力性能的影响,寻找最有效的加固位置,得出了不同位置横梁增大截面对结构各关键部位的内力改变,表明增加横梁截面在改善某个截面受力的同时可能加大其他截面的受力,应该予以重视。增大弦杆横梁截面和增大拱腿横梁截面对结构基频及高阶频率均有所提高。
건립강가공교공간유한원모형,분석료증대불동위치횡량절면대결구정력화동력성능적영향,심조최유효적가고위치,득출료불동위치횡량증대절면대결구각관건부위적내력개변,표명증가횡량절면재개선모개절면수력적동시가능가대기타절면적수력,응해여이중시。증대현간횡량절면화증대공퇴횡량절면대결구기빈급고계빈솔균유소제고。
This paper establishes spatial finite element model of rigid-frame arch bridge,analyzes impacts of increasing cross-beam section at different parts upon structural static and dynamic,seeks effective reinforcing position,and finds out that increasing crossbeam section at different position will change the internal force of critical parts,and then shows that increasing crossbeam section will change the section stress and increase other section stress as well,which should be emphasized.Increasing chord crossbeam section and arch crossbeam section can increase basic structural frequency and high frequency.