建筑结构投稿登录
  
您现在的位置:建筑结构>> 期 刊>> 2017年>> 第02期>>正文内容
泡桐木复合夹芯板面内轴向承载能力分析*
洪俊青1,刘伟庆2,方海2,鲍相宇2,张邵峰1
摘 要

(1 南通大学建筑工程学院, 南通 226019;

 2 南京工业大学先进工程复合材料研究中心, 南京 211816)

[摘要]回顾了泡桐木复合夹芯板面内轴向承载能力试验,提出了面内轴向荷载作用下泡桐木复合夹芯板承载能力参考限值;针对既有承载力计算方法的不足,运用经典夹层结构复合材料理论,讨论了夹芯板的稳定性及参数变化对其的影响,给出了面内轴向荷载作用下轻质泡桐木复合夹芯板承载能力的计算方法,阐述了泡桐木复合夹芯板的破坏机理。分析表明,取基于弯曲和剪切共同作用的弹性屈曲荷载作为泡桐木复合夹芯板轴向承载能力的限值是比较合适的;芯材拼缝的设计、施工工艺是该夹层结构发挥承载能力的关键因素;与传统的墙板或墙体比较,泡桐木复合夹芯板具有显著的质轻而承载力高的特点。

[关键词]夹层结构; 面内屈曲; 泡桐木; 建筑墙板; 承载能力

中图分类号:TB332, TU599文献标识码:A文章编号:1002-848X(2017)02-0084-06

 

Load carrying capacity analysis of paulownia core sandwich board under in-plane axial load

Hong Junqing1, Liu Weiqing2, Fang Hai2, Bao Xiangyu2, Zhang Shaofeng1

(1 School of Architectural Engineering, Nantong University, Nantong 226019, China;2 Advanced Engineering Composites Research Center, Nanjing Tech University, Nanjing 211816, China)

Abstract:Based on the experiments of axial  load carrying capacity of paulownia core sandwich board (PCSB) under in-plane axial load, the referenced  limit value of load carrying capacity was presented. Due to the deficiency of the existing calculating method, laminated plate theory was utilized to discuss the stability and the influences of the variation of parameters. The new calculating method of load carrying capacity of light PCSB under in\|plane axial  load was proposed, and the failure mechanism on PCSB was expounded. Analysis shows that it is suitable to determine the elastic buckling load under the joint action of bending and shearing as the axial load carrying capacity of PCSB. The design and construction technologies are the key factors to exert load carrying capacity of the sandwich structure. Compared with partial traditional wallboards and materials, PCSB features characteristics of lightness and high load carrying capacity.

Keywords:sandwich structure; in-plane compression buckling; paulownia; construction wallboard; load carrying capacity

 

*国家自然科学基金重点项目(51238003),住建部科技项目(2011-k5-7),镇江市社会发展项目(SH2013011)。

 

作者简介:洪俊青,博士,副教授,Email: hong2002912@163.com。

下载地址