摘要
针对多跨框架建筑加固工程中常遇到无法对钢筋混凝土(RC)连续梁梁顶进行加固的情况,可以考虑采用碳纤维增强复合材料(CFRP)来加固梁的跨中,增强其正截面的抗弯承载力,并利用梁支座处出现塑性铰,引起弯矩重分布的特性,来达到加固之目的。本文主要对CFRP加固后,连续梁调幅能力、支座配筋率对加固效果影响、二次受力等几个因素可能对连续梁承载力产生的影响做了定性分析。
In some building strengthening projects,owing to that there is fitment or equipments on the floor,it is unable to apply reinforcing measures on the upper surface of the reinforced concrete(RC) contiunous beam.On the basic character of RC contiunous beam--moment redistribution,the author tries an new method to increase the beam's resisting moment capacity.That is to bond Carbon Fiber Reinforced Polymer(CFRP)on beam bottom of the span mid,increasing the span-mid resisting moment capacity,and let the beam end form plastic hinger joint.This article qualitatively analyses several possible effects to the carrying load,in the capacity of moment adjustment with CFRP reinforcement,the support reinforcement rate and two-way loading.
出处
《四川建筑科学研究》
2004年第1期57-58,共2页
Sichuan Building Science
关键词
钢筋混凝土
连续梁
碳纤维
塑性铰
弯矩调幅
配筋率
continuous beam
Carbon Fiber Reinforced Polymer(CFRP)
plastic hinger joint
moment adjustment
reinforcement rate
two-way loading
