轻钢加层结构中CFRP加固节点地震损伤特征分析  

Analysis on the Characteristics of Seismic Damage to the CFRP-Reinforced Joints in Lightweight Steel Storey-Adding Structures

作　　者：曹福生 王为强 杨晶晶 马肖彤 包超[1] Cao Fusheng;Wang Weiqiang;Yang Jingjing;Ma Xiaotong;Bao Chao

机构地区：[1]宁夏大学土木与水利工程学院 [2]北方民族大学土木工程学院

出　　处：《城市建筑》2025年第8期192-194,共3页Urbanism and Architecture

基　　金：宁夏回族自治区重点研发计划资助项目(2021BEG03022);中国科学院“西部之光”人才培养计划项目(XAB2021YW14);宁夏自然科学基金优秀青年项目(2023AAC05015)。

摘　　要：轻钢加层改造技术是既有建筑实现城市更新改造的有效途径之一。本研究通过对比分析节点锚栓应力、钢筋应力、CFRP纤维应力及混凝土损伤分布情况,研究了利用CFRP加固的轻钢加层结构节点地震损伤特征。结果表明:利用CFRP纤维布加固轻钢加层节点可以有效地降低钢筋承载力,减轻混凝土塑性损伤,提升轻钢加层结构的抗震性能。Lightweight steel storey-adding retrofitting technology is one of the effective approaches for urban renewal and renovation of the existing buildings.This paper studies the seismic damage characteristics of lightweight steel storey-adding structure joints reinforced with CFRP by comparing and analyzing the stress of joint anchor bolts,steel bars,CFRP fibers,and the distribution of concrete damage.The results indicate that using CFRP fiber fabric reinforcement can effectively reduce the bearing capacity of steel bars,mitigate plastic damage to concrete,and enhance the seismic performance of lightweight steel storey-adding structures.

关 键 词：抗震性能 加层结构 地震损伤 

分 类 号：TU375.4[建筑科学—结构工程]