【作者】 王迪；

【导师】 廖碧海；

【作者基本信息】 华中科技大学 ， 建筑与土木工程， 2019， 硕士

【摘要】 本文主要是对横隔梁的拉压杆模型配筋设计进行探讨,首先对横隔梁的分类以及受力特点进行简要描述,随后对横隔梁在静力荷载工况下的受力利用Midas软件进行计算,并对其简化。随后利用拓扑优化去找出横隔梁内传力效率最高的单元,抽离出在这种受力状态下横隔梁的拉压杆模型,在这个过程中根据线性插值获得能够抽离出拉压杆模型的体积保留分数取值,并进行理论层次的分析阐释。获得拉压杆模型以后再根据ACI规范附录A中的相关公式和条文对拉压杆模型进行配筋验算并与原设计进行对比。本文主要工作如下:(1)对横隔梁的分类以及受力情况进行简要介绍,选择双承式横隔梁作为主要研究对象,并介绍了近几年最新的有关双承式横隔梁的拉压杆模型配筋的研究成果。选择某县道上的双承式连续箱梁桥的横隔板进行研究,在workbench中的绘图界面建立横隔梁的三维模型,采用线性插值选定体积保留参数对模型进行拓扑优化,并针对试算结果进行理论层次的分析阐释。(2)对横隔梁模型进行拓扑优化之后针对拓扑优化的结果结合结构力学的知识抽离出合理的横隔梁拉压杆模型,在结构力学求解器中计算各杆件内力,得到各杆件内力之后根据附录中的公式对结构进行配筋验算。在获得了横隔梁根据拉压杆模型计算得到的配筋方式以后,对于横隔梁在两种设计方式下的极限承载力等参数进行了对比分析,也为工程设计人员利用workbench的拓扑优化进行设计工作提供了一个良好的算例。更多还原

【Abstract】 This paper mainly discusses the design of the reinforcement of the tension beam model of the transverse beam.Firstly,the classification and stress characteristics of the transverse beam are briefly described,and then the force of the transverse beam under static load conditions is utilized by Midas software.Calculate and simplify it.Then use topology optimization to find the unit with the highest efficiency in the transverse beam,and extract the tension and compression rod model of the transverse beam under this stress state.In this process,according to the linear interpolation,it can be extracted and pulled out.The volume retention score of the pressure bar model is taken and analyzed theoretically.After obtaining the tension and compression rod model,the tensile and compression rod model is checked for reinforcement according to the relevant formulas and provisions in Appendix A of the ACI specification and compared with the original design.The main work of this paper is as follows:1.Briefly introduce the classification and stress of the transverse beam,select the double-bearing transverse beam as the main research object,and introduce the latest model of the tension and compression rod of the double-bearing transverse beam in recent years.The research results of the tendons.The diaphragm of the double-cone continuous box girder bridge on a county road is selected for research.The three-dimensional model of the transverse beam is established in the drawing interface.The model is optimized by linear interpolation and the volume retention parameters are selected.The results are analyzed and explained at the theoretical level.2.After the topology optimization of the transverse beam model,the results of topology optimization combined with the knowledge of structural mechanics are used to extract a reasonable transverse beam tension and compression rod model,and the internal forces of each member are calculated in the structural mechanics solver to obtain the rods.After the internal force of the piece,the structure is checked for reinforcement according to the formula in the appendix.After obtaining the reinforcement method calculated by the transverse beam according to the tension bar model,the parameters of the ultimate bearing capacity of the transverse beam in two design modes are compared and analyzed,and the topology optimization used by the engineering designer is also carried out.The design work provides a good example.更多还原