摘要
目前,预应力混凝土箱梁宽跨比越来越大,依据平面杆系理论计算结果已较难体现结构空间效应。采用实体单元对3跨连续梁进行全桥精细化分析,着重考察箱梁墩顶顶板、边跨跨中底板及边支座附近应力状态,计算结果表明:梁单元和实体单元计算差异较大,实体单元模拟更接近宽箱梁实际应力状态。
At present, the width-span ratio of prestressed concrete continuous wide box girder is becoming more and more large, and it is difficult to reflect the effect of structure space based on the theory of beam element system. In this paper solid elements is used to analyze the whole structure refinement of three span continuous beam, focusing on the box girder pier roof, side span floor and side support near the stress state. The calculation results show that the there is large difference between the beam element and solid element, and the solid element is more close to the actual stress state of wide box girder.
作者
马兆锐
秦道标
黄正荣
朱陈怡
MA Zhao-rui;QIN Dao-biao;HUANG Zheng-rong;ZHU Chen-yi(School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China;Suzhou Traffic Design and Research Institute Co. Ltd. , Suzhou 215011, China)
出处
《公路》
北大核心
2017年第12期134-139,共6页
Highway
关键词
平面杆系
空间效应
实体单元
宽箱梁
分析
plane bar system
spatial effect
solid element
wide box girder
analysis
