[1]王启耀,卢刚刚,张亚国,等.综合管廊大角度斜穿地裂缝的变形及受力特征研究[J].西安建筑科技大学学报(自然科学版),2019,(06):825-832.[doi:10.15986/j.1006-7930.2019.06.008]
 WANG Qiyao,LU Ganggang,ZHANG Yaguo,et al.Study on the deformation and force characteristics of utility tunnel crossing ground fissure with the large angle[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,(06):825-832.[doi:10.15986/j.1006-7930.2019.06.008]
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综合管廊大角度斜穿地裂缝的变形及受力特征研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2019年06期
页码:
825-832
栏目:
出版日期:
2019-12-31

文章信息/Info

Title:
Study on the deformation and force characteristics of utility tunnel crossing ground fissure with the large angle
文章编号:
1006-7930(2019)06-0825-08
作者:
王启耀卢刚刚张亚国胡志平王少卿
(长安大学 建筑工程学院,陕西 西安 710061)
Author(s):
WANG QiyaoLU GanggangZHANG YaguoHU ZhipingWANG Shaoqing
(School of Civil Engineering,Chang′an University, Xi′an 710061, China)
关键词:
合管廊地裂缝脱空区受力变形特征
Keywords:
utility tunnel ground fissure emptying area the force and deformation characteristics
分类号:
TU 99
DOI:
10.15986/j.1006-7930.2019.06.008
文献标志码:
A
摘要:
根据西安地裂缝的分布特征和活动方式,结合综合管廊规划情况,采用有限元软件ABAQUS建立以70°大角度斜穿地裂缝的双舱综合管廊模型,研究分析了在活动地裂缝环境下管廊的受力变形特征.计算结果表明,管廊结构除产生较大的纵向弯曲变形外,还伴随有横向剪切变形和扭转变形;在活动地裂缝作用下,管廊在上盘85 m和下盘80 m内纵向应力变化显著,但这一显著变化范围不随地裂缝活动而变化;剪应力在地裂缝段最大,并呈“V”形变化趋势,而在上、下盘段表现出先增大后减小的变化特征;管廊底部脱空区开始出现于上盘近地裂缝处,并不断向上盘远端扩展.因此在结构设计时,应适当提高地裂缝两侧管廊结构的抗弯、抗剪承载力及裂缝宽度要求或采取分段设缝、设置柔性接头等措施.
Abstract:
Based on the distribution and movement towards ground fissures in Xi′an and combined with the planning of utility tunnel, a two-cabin utility tunnel model crossing ground fissures with the large angle 70° has been established using finite element software ABAQUS to analyze the force and deformation characteristics of utility tunnel under the active ground fissures environment. The numerical results show that the deformation of utility tunnel is mainly longitudinal displacement, accompanied by transverse shear and torsional deformation. Under the action of active ground fissures, the longitudinal stress of utility tunnel varies significantly in hanging wall 85m and footwall 80m but this significant range does not change with the activity of ground fissures. The shear stress in the range of ground fissure is the maximum and presents a “V” shape, and the shear stress shows the characteristics of first increasing and then decreasing in hanging wall and footwall The emptying area at the bottom of utility tunnel begins to appear in the near ground fissure in hanging wall and continuously expands to the distal hanging wall. Therefore, anti-bending and anti-shearing capability and crack width requirements of utility tunnel on both sides of ground fissures should be properly increased or measures of segmentation and setting up flexible joints should be taken in structural design.

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相似文献/References:

[1]熊仲明,韦 俊,龚宇森,等.高烈度多维多点地震作用下某跨越地裂缝框剪结构的地震响应分析[J].西安建筑科技大学学报(自然科学版),2015,(03):309.[doi:10.15986/j.1006-7930.2015.03.001]
 XIONG Zhongming,WEI Jun,GONG Yusen,et al.Seismic response analysis of a frame-shear wall structure across ground fissure in high-intensity and multidimensional multipoint seismic actions[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2015,(06):309.[doi:10.15986/j.1006-7930.2015.03.001]

备注/Memo

备注/Memo:
收稿日期:2019-01-31修改稿日期:2019-11-04
基金项目:陕西省重点研发计划项目(2017ZDXM-SF-095);陕西省住房城乡建设科技科研开发项目(2016-K72)
第一作者:王启耀(1975-),男,博士,副教授,主要从事岩土及地下工程方面的研究及教学工作.E-mail: qiyaowang@chd.edu.cn
更新日期/Last Update: 2020-01-20