项目名称: RC框架结构水平向连续倒塌试验和设计理论研究
项目编号: No.51208011
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 建筑环境与结构工程学科
项目作者: 李易
作者单位: 北京工业大学
项目金额: 25万元
中文摘要: 现有RC框架结构的连续倒塌研究和设计方法主要针对竖向连续倒塌模式,但因竖向构件水平向抗侧能力不足而引起的水平向连续倒塌模式会引起破坏在更大范围内传播,然而目前国内外还未针对RC框架结构水平向连续倒塌问题展开研究。本项目针对RC框架结构水平向连续倒塌问题,通过试验研究、理论分析和数值模拟的方法,对其倒塌机制、竖向构件的侧向抗力和变形能力需求、以及水平向抗连续倒塌措施进行全面系统的研究,研究内容包括:1)通过RC框架子结构的水平向连续倒塌试验,研究RC框架结构水平向连续倒塌的破坏机理及其合理的抗水平连续倒塌机制;2)研究关键参数对RC框架结构抗水平向连续倒塌机制的影响;3)基于能量方法建立水平连续倒塌抗力和变形需求的理论模型;4)基于试验和理论研究,提出抗水平向连续倒塌的设计方法及其相关构造措施。通过本项目研究,揭示RC框架结构水平向连续倒塌的机理,进一步完善RC框架抗连续倒塌设计理论和方法。
中文关键词: 钢筋混凝土框架;水平连续倒塌;倒塌机理;抗力需求;设计方法
英文摘要: Existing studies on progressive collapse (PC) of reinforced concrete (RC) frame structures mainly focus on vertical PC mode. However, horizontal PC induced by failure of vertical structure members could lead to widespread propagation of collapse. But research on horizontal PC of RC frame strutures is still lacking at home and abroad. This project proposes a series of studies on horizontal PC of RC frame structures, including horizontal PC mechanism, lateral resistance and deformation demand of vertical members and horizontal PC resisting method, via experiment study, theoretical analysis and numerical simulation. The main researches are as follows: 1) study failure and resistance mechanism of horizontal PC of RC frame structures via experiments of substructures. 2) study the effect of key parameters of structures on PC resistance mechanism of RC frame structures. 3) energy based theoretical model for resistance and deformation demand of horizontal PC. 4) propose horizontal PC design method and relevant detail requirement based on experimental and theoretical study. Through the above works, this study will illustrate the PC mechanism of RC frame structures and improve the theory and design method for PC of RC frame structures.
英文关键词: reinforced concrete frame structure;horizontal progressive collapse;collapse mechanism;resistance demand;design method