基于ANSYS的拦污栅应力配筋研究  

Research on Stress Reinforcement of Trash Rack Based on ANSYS

作　　者：云甲 赵鹏龙 李佳佳 何燕兰 杜晓奇 YUN Jia;ZHAO Peng-long;LI Jia-jia;HE Yan-lan;DU Xiao-qi(Tianjin Water Transport Engineering Survey and Design Institute Co.,Ltd.,Tianjin 300456,China;School of Water Resources and Hydropower,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]天津水运工程勘察设计院有限公司,天津300456 [2]西安理工大学水利水电学院,陕西西安710048

出　　处：《水电能源科学》2024年第7期87-90,61,共5页Water Resources and Power

基　　金：天津水运工程勘察设计院有限公司科研创新基金项目(SJY202110);国家重点研发计划(2022YFB3207400)。

摘　　要：为获得更精确、科学的配筋方法,提高钢筋混凝土结构的抗拉强度,节省工程造价,提出一种基于ANSYS的弹性正应力配筋方法,选取某地进出水口的拦污栅框架结构为例,提取其连系梁截面上的应力,分别利用基于规范的小偏心受拉配筋法和基于ANSYS的弹性正应力配筋法进行配筋计算,发现基于ANSYS的弹性正应力配筋法根据结构截面应力分布情况进行钢筋分配,总配筋量相同的情况下,主要受拉区配筋量更多。为进一步验证基于ANSYS的弹性正应力配筋方法的合理性,对采用两种配筋方法的钢筋混凝土结构裂缝开展宽度进行验算,并结合ANSYS观测了其裂纹分布情况,发现相同工况下基于ANSYS的弹性正应力配筋法裂缝开展宽度更小,主要受拉区裂纹更少,相比基于规范的小偏心受拉配筋方法可使混凝土承受更大的拉应力。研究结果可为同样工况的钢筋混凝土结构的精确配筋计算提供参考。An elastic normal stress reinforcement method based on ANSYS is proposed to obtain a more accurate and scientific reinforcement method,which can improve the tensile strength of reinforced concrete structures,and save project costs.The waste rack frame structure of a water inlet and outlet in a certain place is selected as an example.The stress on the connecting beam section is extracted.The code-based small eccentric tension reinforcement method and the ANSYS-based elastic normal stress reinforcement method are used to perform reinforcement calculations.It is found that the elastic normal stress reinforcement method based on ANSYS is based on the structure.The steel bars are distributed according to the stress distribution of the section.When the total amount of reinforcement is the same,the amount of reinforcement in the main tension zone is greater.To further verify the rationality of the elastic normal stress reinforcement method based on ANSYS,the crack widths of reinforced concrete structures by two reinforcement methods are checked,and the crack distribution is observed with ANSYS.It is found that under the same working conditions based on ANSYS,the elastic normal stress reinforcement method has a smaller crack development width and fewer cracks in the main tension zone.The concrete can withstand greater tensile stress than the small eccentric tension reinforcement method based on specifications.The research results can provide a reference for accurate reinforcement calculation of reinforced concrete structures under the same working conditions.

关 键 词：混凝土 配筋计算 有限元 裂缝 小偏心受拉 

分 类 号：TV332[水利工程—水工结构工程] TV732.1