| 体外预应力混凝土梁体外筋应力增量的试验与研究 |
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| 引用本文： | 张仲先,张耀庭.体外预应力混凝土梁体外筋应力增量的试验与研究[J].铁道工程学报,2003(4):75-80. |
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| 作者姓名： | 张仲先 张耀庭 |
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| 作者单位： | 华中科技大学土木工程与力学学院,武汉,430074 |
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| 摘 要： | 本文在对七根体外预应力混凝土梁进行试验研究的基础上 ,分析和研究了体外预应力混凝土梁的体外筋应力增量和梁体的整体变形关系 ,推导出了以构件的挠度和梁端转角为参量的体外筋极限应力增量的计算公式 ,并将试验结果与该公式的计算值进行了对比分析 ,结果表明 :计算结果与试验结果较为吻合 ,这种计算方法是简捷而可行的
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| 关 键 词： | 体外预应力 受弯构件 极限状态 体外筋 应力增量 |
| 文章编号： | 1006-2106(2003)04-0075-06 |
| 修稿时间： | 2003年7月21日 |
THEORETICAL AND EXPERIMENTAL STUDY ON STRESS INCREMENT OF EXTERNAL TENDONS IN EXTERNAL PRESTRESSED CONCRETE FLEXURAL MEMBERS AT ULTIMATE STATE |
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| Abstract: | Basing on the research of seven external prestressed beams,in this paper we analyzed the external tendons of extermal prestressed beam and studied the whole of the beam deformation,and we deduced a formula with members deflection and end rotation of beam as parameters of external tendons stress under the ultimate state,the calculation formula is relatively simple,combine with this text experiment result combination domestic and international relevant experiment research proceeds the contrast with the calculation value of the deduced theoretical formula,result enunciation;Calculation result agree with the experiment result very well,for this reason this kind of calculation method is simple and viable. |
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| Keywords: | external prestressing R C bending component ultimate state external tendons stress increment |
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