[1]郑玉风,刘方成,张友良.土工袋加筋橡胶砂垫层隔震效应试验研究[J].地震工程与工程振动,2019,39(03):073-83.[doi:10.13197/j.eeev.2019.03.73.zhengyf.008]
 ZHENG Yufeng,LIU Fangcheng,ZHANG Youliang.Experimental study on isolation effects of soilbags reinforced rubber-sand mixture cushion[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(03):073-83.[doi:10.13197/j.eeev.2019.03.73.zhengyf.008]
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土工袋加筋橡胶砂垫层隔震效应试验研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年03
页码:
073-83
栏目:
论文
出版日期:
2019-06-30

文章信息/Info

Title:
Experimental study on isolation effects of soilbags reinforced rubber-sand mixture cushion
作者:
郑玉风12 刘方成1 张友良3
1. 湖南工业大学 土木工程学院, 湖南 株洲 412007;
2. 海南大学 热带农林学院, 海南 海口 570228;
3. 海南大学 土木建筑工程学院, 海南 海口 570228
Author(s):
ZHENG Yufeng12 LIU Fangcheng1 ZHANG Youliang3
1. College of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China;
2. Institute of Tropical Agriculture and Forestry Hainan University, Haikou 570228, China;
3. College of Civil Engineering and Architecture of Hainan University, Haikou 570228, China
关键词:
土工袋橡胶砂基础隔震低层建筑振动台试验
Keywords:
soilbagrubber sand mixture (RSM)base isolationlow-rise buildingsshaking table tests
分类号:
TU352.1
DOI:
10.13197/j.eeev.2019.03.73.zhengyf.008
摘要:
土工袋加筋橡胶砂垫层(SBRSMC)作为一种低成本减隔震方法,可应用于以村镇民居为代表的低层房屋的抗震减灾。本文应用振动台试验方法,以刚性质量块代替上部结构,研究SBRSMC的隔震效应。SBRSMC垫层面积1.5 m×2.0 m,厚度14 cm~28 cm,土袋填充率45%~90%,质量配重2 t~6 t。激震方式包括正弦激震和El Centro地震波激震,输入加速度幅值从0.05 g~1.2 g。试验结果表明:(1)SBRSMC的隔震效应主要受垫层厚度、土袋填充率以及上部结构质量配重等因素的影响,土袋铺设方式对SBRSMC的隔震效应影响较小;(2)SBRSMC垫层厚度越大、土袋填充率越小、上部结构质量配重越大,隔震效应就越好;(3)综合考虑隔震效应与经济成本,垫层厚度21 cm、土袋填充率60%是较为合理的SBRSMC隔震垫层参数;(4)SBRSMC比纯砂垫层和橡胶砂垫层的隔震效应更好,更适用于作为刚性房屋的基底隔震垫层。
Abstract:
Soilbags reinforced rubber sand mixture cushion (SBRSMC) can be used as a low-cost seismic isolation method to mitigate earthquake induced disasters of low-rise buildings, in which the rural houses are typical representatives. This paper introduces studies on the isolation effects of SBRSMC by shaking table tests, with the use of mass blocks to represent upper structures. Main charaters of the experiments carried out here include as follow:cushion plane area 1.5×2.0 m2, cushion thickness from 14 cm to 28 cm, filling ratio of soilbags from 45% to 90%, mass block representing upper structures from 2 t to 6 t, shake table excited by both sine loading and El Centro earthquake loading with the maximum input acceleration from 0.05 g to 1.2 g. Results of tests indicate that:(1) The isolation effect of SBRSMC is mainly influenced by the thickness of the cushion, soilbag filling ratio and the quality of the upper structure weight, while is less influenced by the laying pattern of soilbags. (2) The isolation effect of SBRSMC increases with both the thickness of the cushion and the quality of the upper structure weight, while decreases with the filling ratio of soilbags. (3) SBRSMC with thickness 21cm and soilbag filling ratio 60% is the reasonable suggestion of this study, as both the isolation effect and economic cost are taken into considered. (4) The isolation effect of SBRSMC is demonstrated better than both pure sand cushion and rubber sand cushion, and SBRSMC is believed to be suitable for application in base isolation of rigid building.

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备注/Memo

备注/Memo:
收稿日期:2018-9-4;改回日期:2018-12-12。
基金项目:国家自然科学基金项目(51108177,51608190,51608189)
作者简介:郑玉风(1990-),女,博士研究生,主要从事结构抗震、软弱地基加固研究.E-mail:296216938@qq.com
通讯作者:刘方成(1978-),男,副教授,博士,主要从事结构抗震研究.E-mail:455211101@qq.com
更新日期/Last Update: 1900-01-01