预应力法加固混凝土轴心受压构件试验研究  

Experimental Research on Axial Compression Columns Strengthened with Prestressed Method

作　　者：袁海庆[1] 杜旌 符晶华[2] 

机构地区：[1]武汉理工大学,430070 [2]湖北建科结构加固有限公司,武汉430071

出　　处：《建筑结构》2004年第3期12-13,62,共3页Building Structure

摘　　要：为克服现有混凝土柱加固方法的不足 ,采用专用螺栓千斤顶对混凝土轴心受压构件进行预应力法加固试验 ,使卸载和加固同步进行 ,有效地消除了二次受力应变滞后影响。加固后组合构件整体承载力得到显著提高 。In order to dispel the defects of the methods of strengthening concrete columns under axial compression,a new way called prestressing by bolt-jack is presented .The results indicate that the lagging of strain produced by repressing can be a voided,and the unloading and strengthening can be acted at the same time.The ult imate strength of the strengthened columns is increased remarkably.The added par ts and the original column work well together.

关 键 词：轴心受压构件 预应力法 混凝土柱 应变滞后 承载力 

分 类 号：TU375.3[建筑科学—结构工程]