| PC连续梁塑性设计的极限等效荷载平衡法 |
| |
| 引用本文： | 刘晚成,左宏亮,王钧,王雪莹.PC连续梁塑性设计的极限等效荷载平衡法[J].建筑结构学报,2008,29(Z1):57-61. |
| |
| 作者姓名： | 刘晚成 左宏亮 王钧 王雪莹 |
| |
| 作者单位： | 东北林业大学土木工程学院; |
| |
| 基金项目： | 哈尔滨市基金(2005AFXXJ017) |
| |
| 摘 要： | 对于预应力混凝土连续梁的正截面承载力计算及内力重分布设计,探讨一种概念清楚、计算简捷的方法。提出了"极限等效荷载平衡"的概念,将预应力混凝土连续梁简化为承受轴向力和剩余使用荷载的普通钢筋混凝土梁。给出了极限承载力平衡法的极限承载力计算简图和计算公式。讨论了主弯矩、次弯矩、预应力轴力对极限承载力及塑性内力重分布的影响,对预应力混凝土连续梁内力重分布的试验数据进行了分析,并提出了内力重分布的弯矩调幅系数的建议值。
|
| 关 键 词： | 等效荷载 内力重分布 预应力混凝土连续梁 |
Ultimate equivalent load balance method for plastic design of PC continuous beams |
| |
| LIU Wancheng,ZUO Hongliang,WANG Jun,WANG Xueying.Ultimate equivalent load balance method for plastic design of PC continuous beams[J].Journal of Building Structures,2008,29(Z1):57-61. |
| |
| Authors: | LIU Wancheng ZUO Hongliang WANG Jun WANG Xueying |
| |
| Affiliation: | LIU Wancheng,ZUO Hongliang,WANG Jun,WANG Xueying(College of Civil Engineering,Northeast Forestry University,Harbin,China) |
| |
| Abstract: | A method which is clear in concept and easy for calculating is proposed for determining the flexural strength and designing the internal force redistribution of prestressed concrete continuous beams.Based on the concept of "ultimate equivalent load balance" presented in the paper,prestressed concrete continuous beams are simplified as reinforced concrete beams with axial prestressing and surplus working load.The calculation diagram and formula of this method for ultimate strength are developed.The influence of primary moment,secondary moment and axial prestressing on ultimate strength and plastic internal force redistribution is discussed,the experimental data of internal force redistribution of prestressed concrete continuous beams is analyzed,and the moment modulation coefficient is proposed. |
| |
| Keywords: | prestressed concrete continuous beams equivalent load |
|
| 点击此处可从《建筑结构学报》浏览原始摘要信息 |
|
点击此处可从《建筑结构学报》下载全文 |
|
