预应力区域约束混凝土梁刚度的试验研究  

Expermental Research on Stiffness of Prestressed Regional Confined Concrete Beams

作　　者：高文艺[1] 姚志刚 莫大霖 熊奇伟[1] 

机构地区：[1]贵州大学空间结构研究中心,贵州贵阳550003 [2]贵州建工集团第四建筑工程有限责任公司,贵州贵阳55000

出　　处：《四川建材》2015年第2期63-64,67,共3页Sichuan Building Materials

基　　金：贵州省科技厅自然科学基金项目[黔科合J字[2013]2134号]

摘　　要：本文对1根预应力普通混凝土梁和3根约束箍筋间距不同的预应力区域约束混凝土梁进行了抗弯承载力试验和研究。对比分析得出预应力区域约束混凝土梁受弯承载力有大幅度提高。由于配筋率的提高,构件的刚度也有较大幅度的提高,因此在相同刚度条件下,可以减小构件截面尺寸,获得较大的建筑空间,减小结构自重,降低造价,从而创造更大的经济效益。In this paper, the prestressed ordinary concrete beam and three prestressed regional confined concrete beams with different of confined stirrup spacing were tesed about The bending bearing capacity. Compare and analysis about bending bearing capacity of prestressed regional confined concrete beams are improved to a great extent. Due to the increase of reinforcement ratio, the component stiffness have significantly improved, so under the condition of the same stiffness, can reduce the components section size, thus we can obtain larger architectural space, reduce weight of, structure, reduce cost, and it create greater economic benefits.

关 键 词：预应力区域约束混凝土梁 试验 受弯承载力 截面短期刚度 

分 类 号：TU378.2[建筑科学—结构工程]