CAJ | 학술논문

以一座大悬臂箱梁桥全桥实体分析为基础，得出横梁在多种荷载工况下的受力特点，进而得出横梁受力的简化荷载模型，以实体分析的结果能很容易确定提出的荷载简化计算模型的各参数值。确定荷载模型后，以二维平面应力单元模拟横梁对其在最不利荷载工况下进行拓扑优化，得到横梁用于拉压杆模型的构型，并总结了类似形式横梁拉压杆模型的构造方法，最后结合规范给出了针对各拉、压杆件的配筋计算公式。
이일좌대현비상량교전교실체분석위기출，득출횡량재다충하재공황하적수력특점，진이득출횡량수력적간화하재모형，이실체분석적결과능흔용역학정제출적하재간화계산모형적각삼수치。학정하재모형후，이이유평면응력단원모의횡량대기재최불리하재공황하진행탁복우화，득도횡량용우랍압간모형적구형，병총결료유사형식횡량랍압간모형적구조방법，최후결합규범급출료침대각랍、압간건적배근계산공식。
Based on the entity analysis of some box girder bridge with cantilever, the stress characteristics of the cross girder under various load cases are obtained, and then the simplified load model of the cross girder is derived. According to the finite element analysis result, the parameters of the proposed model can be easily determined. After these, the topology optimization of the cross girder based on a stress model with 2D plan is implemented under the most unfavorable load case, and the configuration of the strut-tie model is obtained. Based on the topology optimization result, the method for establishing the strut-tie model is summarized. Finally, the reinforcement calculation formulas for the struts and ties are given according to the corresponding standards.