钢筋混凝土复杂受力构件的配筋设计方法研究

项目名称： 钢筋混凝土复杂受力构件的配筋设计方法研究

项目编号： No.51508182

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 建筑科学

项目作者： 张鹄志

作者单位： 湖南科技大学

项目金额： 20万元

中文摘要： 钢筋混凝土复杂受力构件的配筋设计一直是一个难点，过去常使用经验方法，当前渐渐流行应力方法，从力学概念上来讲，这是一次很大的进步。然而当前已有的应力方法还不够成熟，存在着诸多的问题。本项目以力学性能为指引，将对钢筋混凝土复杂受力构件当前已有的经验设计方法，弹性应力设计方法和弹塑性应力设计方法各自的优缺点展开了讨论。本项目将弹性应力设计方法和弹塑性应力设计方法的改进作为研究重点，一方面突破弹性应力设计方法目前几乎只有拉压杆模型方法的局面，推动弹性应力设计方法全面发展并取代经验设计方法，另一方面促进弹塑性应力设计方法的进步，使其能尽快为工程设计所用。在研究中，主要从拓扑优化和应力设计的理念出发，完成相应的试验研究和非线性分析作为支撑，以期提高钢筋混凝土复杂受力构件配筋设计的合理性和实用性。此外，项目还提出利用传力路径进行钢筋混凝土复杂受力构件配筋设计的新思路，并将展开一些探索性研究。

中文关键词： 结构优化；设计理论；结构分析

英文摘要： Designs of the reinforcement layouts of reinforced concrete (RC) members under complex stress state are always difficult. Compared with the previous proposed methods based on experiments, the stress methods are becoming more and more popular in these years. This is a great progress for the stress methods are more consistent with mechanical concept. However, there are still many problems exist in the stress design methods for their immaturity. This project will investigate the advantages and disadvantages of empirical design methods, elastic stress design methods and elastic-plastic stress design methods for RC members under complex stress state, according to their mechanical properties. Elastic stress design methods and elastic-plastic stress design methods will be mainly studied in this project in order to improve. First, the domination of strut-and-tie model methods in elastic stress design methods will be broken and elastic stress design methods will be promoted to completely replace the empirical design methods. Second, elastic-plastic stress design methods will improve in order to use them in practice as soon as possible. The researches in this project will mainly be based on the idea of topology optimization, stress design, and the support of experimental study and nonlinear analysis, in order to make the reinforcement layout design of RC members under complex stress state more reasonable and practical. In addition, the project also proposed a new idea for reinforcement layout design of RC members under complex stress state by using the load transfer path, and the corresponding exploratory research will be done.

英文关键词： structural optimization;design theory;structural analysis