预应力高强混凝土T梁正截面强度计算方法和影响参数的研究  

Study on Calculation Method and Parameters Analysis of the Cross-section Strength in Prestressed High-strength Concrete T-beam

作　　者：刘小燕[1] 颜东煌[1] 张峰[1] 魏洪昌[2] 王来永[2] 

机构地区：[1]长沙理工大学,湖南长沙410076 [2]交通部公路科学研究所,北京100088

出　　处：《长沙交通学院学报》2005年第2期15-20,共6页Journal of Changsha Communications University

基　　金：交通部科技项目计划课题

摘　　要：针对高强混凝土材料的特点,考虑材料非线性的影响,利用大型软件对预应力高强混凝土T梁进行了全过程仿真计算。根据正截面受力破坏特点,建立了正截面强度计算公式。在此基础上,对影响正截面强度的重要参数梁高、配筋率等进行大量计算与分析,得出其适用范围。计算结果可靠,可供工程设计人员参考使用。Orienting to the property of high-strength concrete, the authors adopt finite element software to carry out the simulative calculation of the whole process of prestressed high-strength concrete T-beam (taking) material nonlinear influence into consideration. According to the destructive property of normal section (acted) on by force, a formula to calculate its strength is set up. The authors obtained the (application) range after lots of calculations and analysis of the main parameters that affect the intensity of normal section, (including) depth of girder and reinforcement ratio, and provided the foundations to calculate the (intensity) of prestressed high-strength concrete cross section. The results are reliable enough to be referenced by (engineers) and designers.

关 键 词：预应力高强混凝土梁 非线性 仿真计算 正截面强度 参数分析 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]