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异形柱下扩展基础冲切性能模拟研究*
徐秀凤1,孔子昂2
摘 要

(1 青岛黄海学院建筑工程学院, 青岛 266427; 2 青岛绿城建筑设计有限公司, 青岛 266071)

[摘要]由于我国规范对异形柱下扩展基础的冲切承载力计算并未做出明确的规定,国内外对异形柱下扩展基础的冲切性能的研究也较少。鉴于上述情况,采用MSC.Marc有限元软件对某矩形柱下扩展基础冲切试验模型进行精细化有限元模拟。在验证模型正确的基础上,对十字形、T形、L形柱下的扩展基础进行建模分析,并提出异形柱基础冲切承载力的计算公式,通过模拟结果、计算结果及相关研究成果的对比可知,异形柱基础的数值模拟方法和冲切承载力计算方法均较为正确,可以为工程设计提供参考。

[关键词]异形柱; 扩展基础; 冲切承载力; 有限元模拟

中图分类号:TU473文献标识码:A文章编号:1002-848X(2018)18-0113-04

 

Simulation study on punching shear behavior of extended foundation under the special\|shaped columns 

Xu  Xiufeng1, Kong Zi′ang2

(1  Architectural Engineering Institute, Qingdao Huanghai University, Qingdao 266427, China; 2 Qingdao Greentown Architectural Design Co.,  Ltd.,  Qingdao 266071, China)

Abstract:The calculation of the punching capacity of the extended foundation under the special-shaped column is not defined in China′s design code. And there are few studies on the punching performance of the extended foundation under the special-shaped column. In view of the above situation, MSC. Marc finite element software was used to carry out refined finite element simulation to the punching test model of the extended foundation under a rectangular column. On the basis of validating the correctness of  the model, the extended foundations under the cross, T and L column were modeled and analyzed. The calculation formula of punching bearing capacity of special-shaped column foundation was proposed. The comparison of simulation, calculation and related research results shows that the simulation and calculation formula are correct, which can provide a reference for engineering design.

Keywords:special-shaped column; extended foundation; punching shear capacity; finite element simulation

 

*山东省高等学校科技计划项目(J16LG53)。

 

作者简介:徐秀凤,博士,讲师,Email:xuxiufeng2014@126.com。

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