预应力混凝土超静定结构弯矩调幅设计建议  

Suggestions for Moment Modification to Prestressed Concrete Structures

作　　者：陈明政[1] 屈文俊[2] 黄林青[1] 

机构地区：[1]重庆科技学院建筑工程学院,重庆400042 [2]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2008年第2期1-5,15,共6页Structural Engineers

摘　　要：通过对国内外混凝土设计规范和各研究机构对预应力超静定结构考虑塑性内力重分布的弯矩调幅设计建议的介绍,深入讨论了影响预应力超静定结构弯矩调幅的三个主要因素:截面相对受压区高度ξ、次弯矩M_(sec)和水平荷载作用,提出了适用于无侧移和有侧移预应力超静定结构的弯矩调幅设计建议。试验证明,本文提出的调幅设计建议是合理和安全的。Moment modification suggestions in codes of different countries to prestressed hyperstatic strucures were introduced, and three important factors influencing the moment modification of a prestressed hyperstatic strucure were discussed in this paper, which are the relative height of equivalent compression zone ξ, the secondary moment Msec and the horizontal load. Then proper moment modification suggestions fited for non-sway prestressed frames and sway prestressed frames were presented. Through comparison with experiment results, the moment modification suggestions to prestressed concrete structures were proved to be reasonable and safe.

关 键 词：预应力超静定结构 弯矩调幅 无侧移框架 有侧移框架 次弯矩 

分 类 号：TU378[建筑科学—结构工程] TU322