酸雨环境下方钢管再生混凝土偏心受压承载力计算方法研究  

Load carrying capacity of recycled concrete-filled square steel tubes subjected to compression-bending under acid rain

作　　者：黄宏[1,2] 朱琪[3] 陈梦成[1,2] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]江西省建筑过程模拟与控制重点实验室,江西南昌330013 [3]国网江西省电力公司赣西供电分公司电力经济技术研究所,江西新余338000

出　　处：《混凝土》2016年第11期60-63,共4页Concrete

基　　金：国家自然科学基金项目(51378206;51008122);江西省青年科学基金计划(20143ACB21020);江西省青年科学家培养对象(20133BCB23015)

摘　　要：以偏心距(e=25、50 mm)、骨料类型(普通、再生)和腐蚀程度(β=0、10%、20%)为主要变化参数,进行了5个钢管再生混凝土和4个钢管普通混凝土偏心受压试件的试验研究。由于腐蚀过程中钢管壁厚近似均匀地减小,所以在已有的钢管普通混凝土以及钢管再生混凝土偏心受压承载力计算公式的基础上,通过折减钢管壁厚的方法来计算酸雨环境下的钢管普通(再生)混凝土的偏心受压承载力。通过折减钢管壁厚方法计算所得承载力与试验所得偏心受压承载力基本吻合,因此通过折减钢管壁厚的方法来计算酸雨环境下的钢管混凝土偏心受压承载力对工程具有很重要的适用性和指导意义。With eccentricity（e=25,50 mm）,aggregate type（normal,recycled） and corrosion degree（β=0,10% ,20% ）as the main vari- able parameters, the five recycled concrete filled steel tubes （CFST） and four normal CFST subjected to compression-bending under acid rain were studied.Due to the thickness of steel tube reduced approximate uniformly during the corrosion process, based on the existing cal- culation formulas for bearing capacity of recycled CFST and normal CFST subjected to compression-bending, this article using the method of reducing the steel tube wall thickness to calculate the load carrying capacity of recycled CFST and normal CFST subjected to compres- sion-bending under acid rain corrosion.The load carrying capacity which is calculated by reducing the steel tube wall thickness was in con- sistent with the test value.Therefore, the method of reducing the steel tube wall thickness to calculate the load carrying capacity of recycled CFST and normal CFST subjected to compression-bending under acid rain corrosion has very important applicability and guiding signifi- cance in engineering.

关 键 词：酸雨腐蚀 方钢管再生混凝土 偏心受压 承载力 

分 类 号：TU528.01[建筑科学—建筑技术科学]