CAJ | 학술논문

基于ANSYS平台对上承式现代竹拱桥的力学性能进行了数值分析,计算出竹拱桥结构的强度(应力)、刚度(变形)值以及自振频率. 为优化结构,建立了10个不同矢跨比拱桥模型,分别对它们的拱圈弯矩、轴力、挠度和拱脚处反力值以及自振频率等进行比较,从而获取合理矢跨比. 结果表明:该结构拱圈应力远小于竹胶板抗压强度值,而其刚度要求成为设计控制指标. 随矢跨比变化,拱圈弯矩、挠度与竖向频率呈抛物线形变化;拱圈轴力、侧向频率及拱脚处反力呈折线段变化. 该拱桥合理矢跨比为1/3.6.
기우ANSYS평태대상승식현대죽공교적역학성능진행료수치분석,계산출죽공교결구적강도(응력)、강도(변형)치이급자진빈솔. 위우화결구,건립료10개불동시과비공교모형,분별대타문적공권만구、축력、뇨도화공각처반력치이급자진빈솔등진행비교,종이획취합리시과비. 결과표명:해결구공권응력원소우죽효판항압강도치,이기강도요구성위설계공제지표. 수시과비변화,공권만구、뇨도여수향빈솔정포물선형변화;공권축력、측향빈솔급공각처반력정절선단변화. 해공교합리시과비위1/3.6.
The type of modern bamboo arch mechanical performance was studied by numerical analysis based on the AN?SYS platform, and the structure strength ( stress) and stiffness ( deformation) value were obtained. In order to optimize the structure, ten different rise span ratio of arch bridge model were built and calculated. Comparing the value of arch moment, axial force, deflection, natural frequency and force of supports, the reasonable rise?span ratio was gotten. The results show that the structure of arch stress is far less than the allowed value, and the stiffness requirement becomes the control index of design. The relationship curves of moment?rise?span ratio, vertical frequency?rise?span ratio and deflec?tion?rise?span ratio are the parabola. The curves of arch axial force?rise?span ratio, lateral frequency?rise?span ratio and force bearing?rise?span ratio are broken line. The structure reasonable span is almost 1/3.6.