恒压受弯无筋砌体承重墙的受弯能力历经过程特征研究

张文芳; 马军卫; 常建兰

doi:10.6052/j.issn.1000-4750.2010.09.0672

恒压受弯无筋砌体承重墙的受弯能力历经过程特征研究

1.
太原理工大学建筑与土木工程学院, 山西, 太原 030024;
2.
山西省建筑科学研究院, 山西, 太原 030001

基金项目: 国家自然科学基金项目(50978177);太原市城建科研项目(并建管字2008-392);山西省科技基金项目(2010021020-1);山西省科技攻关项目(20110313026-3)

详细信息

作者简介:
马军卫(1981―),男,陕西蒲城人,硕士生,从事建筑结构抗震理论研究(E-mail: sl_majunwei369@sina.com);
常建兰(1977―),女,山西清徐人,工程师,硕士,从事工程结构抗震与加固研究(E-mail: changjianlanf@163.com).

通讯作者:
张文芳(1967―),男,山西壶关人,教授,博士,博导,主要从事工程结构抗震减震设计理论与应用研究(E-mail: zhangwenfang@tyut.edu.cn).

中图分类号: TU362
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出版历程
- 收稿日期: 2010-09-16
- 修回日期: 2011-03-25
- 刊出日期: 2012-06-23

RESEARCHES ON BENDING CAPACITY COURSE OF PLAIN MASONRY BEARING WALL UNDER BENDING AND INVARIABLE AXIAL FORCE

1.
College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China;
2.
Shanxi Academy of Building Research, Taiyuan, Shanxi 030001, China

摘要

摘要: 为探索水平地震作用下恒压受弯无筋砌体承重墙的受弯力学性能,研究了正截面在不同阶段弹塑性受弯能力的历经过程。基于砌体正截面非均匀应力的本构关系假定及拉压区应力图形的等效化,对不同初裂情况下各阶段的恒压受弯能力计算公式作了理论推导,并进行了编程计算分析。结果表明:砌体墙在通常轴压比下,正截面边缘首先拉裂,之后受弯能力不会退化而是逐渐增大;达到极限受弯承载力后,截面产生压碎,受弯能力退化呈直线下降型;弯曲拉裂是从截面局部开始和发展的,受弯能力呈现类似配筋混凝土墙柱的延性,拉裂和压碎的开展过程随轴压比的增大而缩短。砌体墙在高轴压比下,正截面首先压碎,随后受弯能力持续下降。
- 无筋砌体承重墙 /
- 恒压受弯 /
- 正截面受弯能力 /
- 历经过程 /
- 极限受弯承载力
Abstract: The course route of elastic-plastic bending capacity during different phases is studied in order to investigate the mechanics properties of plain masonry bearing walls which carry bending moments and invariable axial forces under a horizontal earthquake action. The formulas for bending capacity at each stage of different circumstances of initial cracking or crushing are theoretically deduced on the basis of a constitutive relationship assumption under uneven stress and stress figure equalization on a normal section. Furthermore, programming and numerical simulating are carried out. The researches indicate that normal section cracks firstly under a usual value of axial compressive stress to strength and bending capacity will not degenerate later but increase gradually, and normal section crushes and bending capacity degenerates linearly after ultimate bending capacity is reached; bending cracking begins at local edges and gradually expands, meanwhile bending capacity exhibits some kind of ductility similar to that of a reinforced concrete wall or column; the course of tensile cracking or compressive crushing becomes shorter along with the increase of compression ratios. On the other hand, the results indicate that normal section crushes firstly under the higher value of compression ratios and course route curves of bending capacity show the trend of a continuous decline.
- plain masonry bearing wall /
- bending under invariable axial force /
- bending capacity on normal section /
- course route /
- ultimate bending capacity

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参考文献(11)

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文章访问数: 1241
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PDF下载量: 291
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恒压受弯无筋砌体承重墙的受弯能力历经过程特征研究

作者简介: 马军卫(1981―),男,陕西蒲城人,硕士生,从事建筑结构抗震理论研究(E-mail: sl_majunwei369@sina.com);常建兰(1977―),女,山西清徐人,工程师,硕士,从事工程结构抗震与加固研究(E-mail: changjianlanf@163.com).

通讯作者: 张文芳(1967―),男,山西壶关人,教授,博士,博导,主要从事工程结构抗震减震设计理论与应用研究(E-mail: zhangwenfang@tyut.edu.cn).

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出版历程

RESEARCHES ON BENDING CAPACITY COURSE OF PLAIN MASONRY BEARING WALL UNDER BENDING AND INVARIABLE AXIAL FORCE

计量

出版历程

目录

作者简介:
马军卫(1981―),男,陕西蒲城人,硕士生,从事建筑结构抗震理论研究(E-mail: sl_majunwei369@sina.com);
常建兰(1977―),女,山西清徐人,工程师,硕士,从事工程结构抗震与加固研究(E-mail: changjianlanf@163.com).

通讯作者:
张文芳(1967―),男,山西壶关人,教授,博士,博导,主要从事工程结构抗震减震设计理论与应用研究(E-mail: zhangwenfang@tyut.edu.cn).