预应力钢骨混凝土受弯构件承载力计算  

Calculation of Bearing Capacity for Bending of Prestressed Steel Reinforced Concrete Girder

作　　者：慕光波[1] 王连广[1] 周乐[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2008年第11期1648-1651,共4页Journal of Northeastern University(Natural Science)

基　　金：教育部博士学科点专项科研基金资助项目(20050145012);辽宁省自然科学基金资助项目(20052019)

摘　　要：针对预应力钢骨混凝土结构的试验和理论研究还存在差异的问题,研究了预应力钢骨混凝土受弯构件的受力性能,介绍了现有技术条件下预应力钢骨混凝土构件的施工方法,根据其截面形式和受力特点,分析构件在极限状态下的主要破坏模式及受压区混凝土高度范围.针对不同的破坏模式建立中和轴经过钢骨腹板的预应力钢骨混凝土梁的极限抗弯承载力计算公式,并将计算结果与试验结果进行比较,两者吻合较好.Investigates the bearing capacity for bending of prestressed steel reinforced concrete （PSRC） members to which the earlier works were different theoretically and experimentally. Some existing construction procedures relevant to PSRC members are briefly described. According to the sectional shape of PSRC and loading force acting on it, the main failure modes and the range of height of compressed region in the sectional area of concrete under limit load are analyzed. The formulae of bearing capacity for bending in different failure modes are thus given, where the neutral axis is passing through the web plate of a PSRC girder. A comparison showed that the values of calculation and experiment coincide well with each other.

关 键 词：预应力 钢骨混凝土 受弯构件 承载力 破坏模式 

分 类 号：TU973.23[建筑科学—结构工程]