沿海地区台风荷载下陶粒加气混凝土砌块填充墙斜裂缝试验研究
Experimental study on oblique cracks of ceramsite aerated concrete block-filled walls under typhoon load in coastal area
李瑞鸽 1卢玉华 2王刚 2林宏剑 1王建君 1倪金龙2
作者信息
- 1. 台州学院建筑工程学院,台州 318000
- 2. 方远建设集团有限公司,台州 317700
- 折叠
摘要
为研究沿海地区低抗震设防烈度条件下陶粒加气混凝土砌块填充墙的开裂原因,采用PKPM软件分析了某13 层框架结构住宅在台风荷载和 6 度抗震设防烈度下结构的层间位移,结果表明:在该地区基本风压下,该工程的最大层间位移角与 6 度抗震设防烈度时基本相当.同时进行了一榀足尺框架模型试验,结果表明,当主体结构还在弹性阶段时,模型的整体刚度就急剧下降,填充墙就已经开裂.当试件的位移角达到 1/1 092 时,填充墙开裂严重,此时相当于刚度修正后的 13 层框架住宅案例在 1.27kN/m2 的风压下的表现.因此按照目前的结构设计参数取值和施工构造措施,沿海地区陶粒加气混凝土砌块填充墙的开裂在所难免.为避免该斜裂缝发生,应在设计和施工阶段采取新的设计方法和构造措施.
Abstract
In order to study the cracking reason of ceramsite aerated concrete block-filled wall under the condition of low seismic fortification intensity in coastal areas,PKPM software was used to analyze the interlayer displacement of a 13-story frame structure house under typhoon load and 6-degree seismic fortification intensity.The results show that the maximum interlayer displacement angle of the project is basically the same as that of 6-degree seismic fortification intensity under the basic wind pressure in this area.At the same time,a full-scale frame model test was carried out.The results show that when the main structure is still in the elastic stage,the overall stiffness of the model decreases sharply,and the infilled wall has cracked.When the displacement angle of the specimen reaches 1/1 092,the infilled wall cracks seriously,which is equivalent to the performance of the 13-story frame house case under the wind pressure of 1.27kN/m2 after the stiffness correction.Therefore,according to the current structural design parameters and construction measures,the cracking of ceramsite aerated concrete block-filled wall in coastal areas is inevitable.In order to avoid the occurrence of oblique cracks,new design methods and structural measures should be adopted in the design and construction stages.
关键词
陶粒加气混凝土砌块填充墙/风荷载/斜裂缝/层间位移Key words
ceramsite aerated concrete block-filled wall/wind load/oblique crack/interlayer displacement引用本文复制引用
基金项目
浙江省公益研究计划(LGG20E080006)
国家自然科学基金青年科学基金(52009087/E0903)
浙江省建设科研项目(2017K185)
出版年
2024
NETL
NSTL
维普
万方数据