摘要
由于连续刚构工点种类多、无法批量设计且设计效率低,所以以(16+24+16)m单线钢筋混凝土连续刚构为研究对象,提出了一种纵向简化计算方法。首先,对比分析了正交连续刚构梁、板单元建模方式计算结果的异同;其次,对比分析了斜交连续刚构经简化后建立的梁单元模型与相应的板单元模型的内力,以判断经放大计算孔跨简化后建立的梁单元模型是否可以代替斜交板单元模型进行纵向计算分析。结果表明:运用简化计算方法可以高效、精准地确定连续刚构的结构尺寸和纵向受力情况。该研究成果可为类似工程项目提供参考。
Because there are many types of continuous rigid frame working points which aren’t be designed in batch and design efficiency is low,(16+24+16) m single line reinforced concrete continuous rigid frame is taken as the research object. A longitudinal simplified calculation method is proposed. Firstly, the calculation results of beam and plate element modeling methods of orthogonal continuous rigid frame are analyzed and compared;Secondly, the internal forces of the beam element model and the corresponding plate element model established after the simplification of the skew continuous rigid frame are compared and analyzed to determine whether the beam element model established after the simplification of the enlarged calculation span can replace the skew plate element model to make longitudinal calculation and analysis. The results show that the size of continuous rigid frame and longitudinal force can be determined accurately by simple calculation. The research can provide references for similar engineering.
作者
张茜
Zhang Xi(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)
出处
《市政技术》
2023年第1期159-165,共7页
Journal of Municipal Technology
关键词
铁路桥梁
连续刚构
斜交桥
简化计算
统计分析
railway bridge
continuous rigid frame
skew bridge
simplified calculation
statistical analysis
