铁道标准设计2016，Vol.60Issue(4)：58-61,4.DOI:10.13238/j.issn.1004-2954.2016.04.014
混凝土收缩对空心墩墩顶实体段的应力影响研究
Study on Stress Effect of Concrete Shrinkage on Top Solid Section of Hollow Pier
董红科 1戚铁1
作者信息
- 1. 中铁工程设计咨询集团有限公司太原设计院，太原 030013
- 折叠
摘要
Abstract
In order to explain the importance of the stress effect of concrete shrinkage on the top solid section of the hollow pier, a single track railway hollow pier is taken for reference and the finite element model is established to analyze the top solid section of the pier. The analysis reveals that the maximum tensile stress and compressive stress appear in the axial direction of the bridge when the vertical load (including the aerodynamic coefficients) is only taken into consideration. The maximum tensile stress and compressive stress appear in lateral direction when the concrete shrinkage load is also considered. Moreover, the tensile stress value increases significantly, and the transverse tension stress increases by about 2~3 times. Concrete shrinkage load has great influence on the stress at the top solid section of the pier and attention shall be paid to it in the design and calculation of the reinforcement.关键词
铁路桥梁/空心墩/混凝土收缩/应力Key words
Railway bridge/Hollow pier/Concrete shrinkage/Stress分类
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董红科,戚铁..混凝土收缩对空心墩墩顶实体段的应力影响研究[J].铁道标准设计,2016,60(4):58-61,4.
