| 预应力混凝土结构侧向约束影响的分析方法 |
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| 引用本文： | 郑文忠,周威.预应力混凝土结构侧向约束影响的分析方法[J].哈尔滨建筑大学学报,2001,34(6):12-16. |
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| 作者姓名： | 郑文忠 周威 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090 |
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| 基金项目： | 高等学校骨干教师资助计划项目，黑龙江省科委青年基金资助项目(Q98-12) |
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| 摘 要： | 提出了超静定预应力混凝土结构侧向约束影响系数的概念与计算方法。在分析了现行常规设计方法承载力计算公式之后，建立了通过次轴力考虑侧向约束影响、通过预应力筋两阶段工作原理考虑侧向约束影响、通过重新定义次弯矩考虑侧向约束影响和通过位移荷载考虑侧向约束影响等四种计算分析方法。分析总结了梁端铰接法、柱底铰接法和子柱法等三种通过构造措施考虑侧向约束影响的方法。为合理设计有侧向约束的预应力混凝土结构提供了依据。
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| 关 键 词： | 侧向约束 次轴力 次弯矩 位移荷载 预应力混凝土结构 |
| 文章编号： | 1006-6780(2001)06-0012-05 |
| 修稿时间： | 2000年12月19 |
Methods for analyzing lateral restraint of prestressed concrete structures |
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| ZHENG Wen-zhong,ZHOU Wei.Methods for analyzing lateral restraint of prestressed concrete structures[J].Journal of Harbin University of Civil Engineering and Architecture,2001,34(6):12-16. |
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| Authors: | ZHENG Wen-zhong ZHOU Wei |
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| Abstract: | Presents the definition and calculation of lateral-restraint modulus for prestressed concrete indeterminate structures,discusses the four methods established for calculating lateral restraint :adding secondary axial force,basing on two-stage-working principle,renewing the definition of secondary mo-ment and considering internal force due to lateral deformation,and sums up the three constructional ways:hinged joint in beam end,pin joint in column end and sub column,established by analyzing traditional ultimate load-carrying capacity formula.Thereby providing basis for rational computation of lateral restraint fo r prestressed concrete structures. |
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| Keywords: | prestressed concrete lateral restraint modulus secondary axial force secondary moment internal force due to lateral deformation two-stage-working principle |
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