钢筋混凝土框架梁柱偏心节点的抗裂度计算  

CALCULATION OF CRACK RESISTANCE CAPACITY OF ECCENTRIC BEAM-COLUMN CONNECTIONS IN REINFORCED CONCRETE FRAMES

作　　者：王静峰[1] 孙捷[2] 柳炳康[3] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]安徽建筑工业学院土木工程系,合肥230022 [3]合肥工业大学建筑工程系,合肥230009

出　　处：《工业建筑》2004年第1期42-44,共3页Industrial Construction

基　　金：安徽省自然科学基金资助项目 ( 0 10 44 5 0 2 )

摘　　要：钢筋混凝土框架偏心节点核芯区受力复杂 ,在地震区和一些特殊环境下 ,出现裂缝后修复较困难 ,采用梁端水平加腋可以节约空间利用 ,有效提高节点核芯区的强度和延性 ,延缓裂缝的出现和发展。现以节点偏心距和梁端水平加腋宽度为变化参数 ,从抗裂度角度来研究偏心节点的抗裂性能 ,提出实用的抗裂度计算公式 ,并与试验结果进行对比 ,吻合较好。In the eccentric joint core area of a reinforced concrete frame,the forces are complicated.In seismic area or under some exceptional conditions,eccentric joints are difficult to repair when cracks occur.Adopting spread-ended beam,it can save space,efficiently improve strength and ductility in the eccentric joint core area,and postpone the appearance and development of crack.In this paper,the major study parameters in eccentric joints are eccentricity and spread-ended beam width.Cracking resistance of eccentric beam-column joints are studied from cracking resistance capacity.The applied equation for computing crack resistance capacity is proposed.Compared with the test results,the calculated results are in good agreement with them.

关 键 词：钢筋混凝土 框架 梁柱偏心节点 抗裂度 加腋宽度 有效截面宽度 

分 类 号：TU375.4[建筑科学—结构工程]