[1]陈启辉,*,顾薛青,等.巨型溶洞超厚填筑体分层沉降规律研究[J].山东建筑大学学报,2019,34(06):1-8.[doi:10.12077/sdjz.2019.06.001]
 CHEN Qihui*,GU Xueqing,WANG Jun,et al.Study on layered settlement law of super-thick filling body in giant karst cave[J].Journal of Shandong jianzhu university,2019,34(06):1-8.[doi:10.12077/sdjz.2019.06.001]
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巨型溶洞超厚填筑体分层沉降规律研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
34
期数:
2019年06期
页码:
1-8
栏目:
研究论文
出版日期:
2019-12-01

文章信息/Info

Title:
Study on layered settlement law of super-thick filling body in giant karst cave
文章编号:
1673-7644(2019)06-0001-08
作者:
陈启辉1*顾薛青1 王军1于明洋2邱敬格3
(1.山东建筑大学 土木工程学院,山东 济南 250101;2.中铁十四局集团有限公司,山东 济南 250101;3.山东建大工程鉴定加固研究院,山东 济南 250104)
Author(s):
CHEN Qihui* GU Xueqing WANG Jun et al.
(School of Civil Engineering, Shandong Jianzhu University,Jinan 250101, China)
关键词:
超厚填筑体沉降监测分层沉降动力响应
Keywords:
super-thick filling body subsidence monitoring layered settlement dynamic response
分类号:
TU475+.9
DOI:
10.12077/sdjz.2019.06.001
文献标志码:
A
摘要:
采用洞砟回填方案处治溶洞,具有施工简单和成本经济的优点,但其沉降问题不容忽视,特别是回填体内部沉降特征是研究沉降控制方法的关键。文章以黔张常铁路高山隧道巨型溶洞为例,建立了超厚填筑体沉降在线监测系统,基于监测结果分析了填筑体内部沉降特征,并采用MIDAS/GTS软件进行了运营期列车动载作用下填筑体的动力响应分析。结果表明:超厚填筑体大部分沉降在隧道施工期已经结束,沉降主要发生在洞砟注浆层底部、洞砟未注浆层和底部堆积体顶部,其中洞砟未注浆层沉降最为显著;底部堆积体分层压缩量呈现出随着深度的增加而减小的规律;钢筋混凝土路基板隔振效果良好,列车动载对填筑体分层沉降影响不大。
Abstract:
The treatment of karst caves with ballast backfilling scheme has the advantages of simple construction and cost-effective, but its settlement problem can not be ignored, especially the internal settlement characteristics of backfilling body is the key to the study of settlement control methods. Taking the giant karst cave of Qianzhangchang railway as an example, this paper establishes an on-line monitoring system for the settlement of super-thick filling body. Based on the monitoring results, the settlement characteristics of the filling body are analyzed, and the dynamic response of the filling body under the dynamic load of the train during the operation period is analyzed by using MIDAS/GTS software. The results show that most of the settlement of super-thick filling body has been completed during the tunnel construction period, and the settlement mainly occurs at the bottom of the grouting layer, the ungrouted layer and the top of the bottom accumulation body. The settlement of the ungrouted layer of the tunnel is the most significant, and the stratified compression of the bottom accumulation body decreases with the increase of the depth. The vibration isolation effect of reinforced concrete subgrade is good, and the dynamic load of train has little effect on the layered settlement of filling body.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-10-02 基金项目:国家自然科学基金项目(51704176)作者简介:陈启辉(1970-),男,教授,博士,主要从事工程岩土体稳定与支护工程、地下工程设计理论与应用等方面的研究.E-mail:Qhchen@sdjzu.edu.cn[*通讯作者]
更新日期/Last Update: 2019-11-18