钢筋混凝土梁—薄墙正交节点试验研究（可复制毕业论文）.pdf

重庆大学
硕士学位论文
钢筋混凝土梁—薄墙正交节点试验研究
姓名:朱祖敬
申请学位级别:硕士
专业:结构工程
指导教师:王志军
20060501
中文摘要

摘要

框架梁剪力墙正交节点是高层建筑常用的钢筋混凝土框架剪力墙体系和
框架核心筒结构体系中非常重要的节点之一本文针对梁中置于薄墙的梁薄
墙正交节点的受力性能和处理措施进行了探索
本文完成了3个采用不同加强措施的 RC 梁薄墙正交节点试件在恒定轴压力
和梁端反复荷载作用下的试验分析了弹性状态下多个不同几何参数的梁墙正
交节点在墙顶轴力梁端静力作用下的应力规律通过试验和理论分析得出以下
结论
1 梁与薄墙正交节点前期受力与有限元弹性分析相吻合
薄墙包括墙上设有明梁的墙受梁端施加的平面外弯矩时以墙上节点区
与节点附近一定范围的混凝土受拉破坏形成剥离裂缝为主墙内仅设置暗柱试件
的墙背面裂缝发展较少而墙上设置明梁试件的墙背面裂缝相对发展较多且范
围相对较大
墙中设置暗柱对梁薄墙平面外节点受弯作用不大墙中仅设置暗柱不能
提高剪力墙破坏截面不均匀剪力形成的抵抗弯矩当墙较薄时不能提高墙受梁端
平面外弯矩时的承载力梁纵筋弯折锚固时水平段长度不足的问题没有得到改善
墙中设置明梁或梁上同时设置楼板对梁薄墙正交节点作用明显墙上设
置明梁能增大墙受梁端平面外弯矩时墙破坏截面不均匀剪力形成的弯矩墙有效
截面的抗弯能力也有所提高因此墙上设置明梁后墙平面外承载力增大明显能
改善梁纵筋锚固水平段长度的不足问题使梁纵筋锚固良好
墙中设置明梁的梁薄墙正交节点破坏时明梁受扭严重节点延性较差




关键词梁墙正交节点较薄墙明梁试验有限元弹性分析








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英文摘要

Abstract

The perpendicular beam –thin wall joint is one kind of the very important joints in
the reinforced concrete frame-shear wall structure system and the frame-tube structure
system which monly used in the high-rise buildings. The performance and the
strengthening measures of the perpendicular beam–thin wall interior joints are mainly
studied in this paper.
Three 1:2 scale . perpendicular beam–wall interior joints with different
strengthening measures were tested under constant axial load on the top of the wall and
cyclic vertical load at the end of the beam. The stress properties of this kind of beam–
thin wall joints with different strengthening measures and geometries were also
analyzed using ANSYS in this paper. Through aforementioned experiments and
theoretical analyses, the following conclusion can be obtained.
1. The experimental stress conditions of the perpendicular beam–wall joints at the
early stage are consistent with the results of FEM elastic analysis.
2. Spalling cracks resulted from tension failure of concrete in wall joint and
adjacent area are primary when the thin wall(including the wall with visible wide
beam)