L形截面钢骨混凝土柱正截面承载力试验研究  

Experimental Study on Normal-Section Bearing Capacity of L-Shaped Steel Reinforced Concrete Columns

作　　者：杨德磊[1] 苏益声[2] 童乐为[1] 

机构地区：[1]同济大学建筑工程系 [2]广西大学土木建筑工程学院,广西530004

出　　处：《结构工程师》2007年第6期74-77,共4页Structural Engineers

基　　金：广西科技厅科技攻关项目(桂科攻0574007)

摘　　要：为探索一种承载力高且便于施工的钢骨混凝土异形柱,研究其破坏的一般规律和极限承载力,进行了3根以粗钢筋和型钢为钢骨的不等肢L形截面混凝土柱试件在双向偏心压力作用下的试验。试验得到试件中的钢骨及混凝土在不同荷载时的应变、裂缝开展情况以及极限承载力等相关数据。表明在双向偏心压力作用下,这种柱子破坏过程与普通钢筋混凝土构件相似,横截面平均应变符合平截面假定,极限承载力比相同截面普通钢筋混凝土异形柱有显著提高;粗钢筋作为钢骨可以有效利用钢筋与混凝土的粘结力,不必在钢骨间设置钢腹杆。粗钢筋作为钢骨便于施工。tic of high For investigating a new type of steel reinforced concrete special shaped column with the characterisbearing capacity and facilitating to the construction, and studying the general the ultimate bearing capacity of the column, 3 inequiaxial L-shaped concrete column me failure regularity and mbers reinforced with thick bar and shaped steel, and subjected to axial compression and biaxial bending were tested. The test results show that the failure mode of the column the cross section of the column accords with the is similar to reinforced concrete column, the average strain of plane section hypothesis and the ultimate bearing capacity of the column has more obviously improved than that of reinforced concrete column. The test results also show that concrete columns reinforced with thick bars can make use of the bond strength between bars and concrete and unnecessarily set the braces in the steel sketch. It was also pointed out that concrete columns reinforced with thick bars can facilitate to the construction.

关 键 词：粗钢筋 钢骨混凝土 不等肢L形截面 异形柱 

分 类 号：TU398.9[建筑科学—结构工程]