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（重慶大學(xué)土木工程學(xué)院，重慶  400045）

［摘要］通過(guò)六榀接近足尺后張有粘結(jié)預(yù)應(yīng)力混凝土框架塑性內(nèi)力重分布的試驗(yàn)研究，分析了預(yù)應(yīng)力混凝土框架梁截面相對(duì)受壓區(qū)高度、預(yù)應(yīng)力度、初始次彎矩、梁兩端彎矩不相等等主要因素對(duì)預(yù)應(yīng)力混凝土框架中梁端彎矩調(diào)幅的影響規(guī)律，并針對(duì)不同情況提出了適當(dāng)?shù)恼{(diào)幅設(shè)計(jì)建議。

［關(guān)鍵詞］預(yù)應(yīng)力混凝土框架；荷載彎矩；次彎矩；彎矩調(diào)幅

Experimental study on moment modification of prestressed concrete frame beam

Chen Mingzheng， Huang Yin，  Jian Bin， Bai Shaoliang，  Wang Zhenglin

(College of Civil Engineering, Chongqing University, Chongqing 400045，China)

Abstract:According to the experiment of internal force redistribution to six full-size post-tentioned prestressed concrete frames, the moment modification rules of prestressed concrete frame influenced by some factors are analyzed.These factors are the relative height of equivalent compression zone, prestressing ratio, secondary moment, and the difference in the moment of the beam between both ends. As a result, the proper design proposals are suggested to each situation.

Keywords:prestressed concrete frame;  load moment;  secondary moment;  moment modification

*重慶市自然科學(xué)基金資助項(xiàng)目(CSTS，2004BB0058)。

作者簡(jiǎn)介：陳明政，博士，講師，Email:chenmingzhengcmz@163.com。