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隧道建设(中英文) ›› 2019, Vol. 39 ›› Issue (S2): 301-307.DOI: 10.3973/j.issn.2096-4498.2019.S2.038

• 规划与设计 • 上一篇    下一篇

现浇混凝土综合管廊变形缝设置间距优化研究

马董礼1, 翟朝娇2, 3, , 张国治1, 屠晓光4, 李 超5   

  1. (1. 北京赛瑞斯国际工程咨询有限公司, 北京 100000; 2. 安徽建筑大学建筑结构与地下工程安徽省重点实验室, 安徽合肥 230601; 3. 安徽建筑大学 安徽省城市建设和地下空间工程技术研究中心, 安徽合肥 230601; 4. 合肥市高新区综合管廊办公室, 安徽合肥 230601; 5. 合肥福临工程监理有限公司, 安徽合肥 230601)
  • 收稿日期:2019-04-17 出版日期:2019-12-31 发布日期:2020-04-04
  • 作者简介:马董礼(1982—),男,北京人,2003 年毕业于北京信息职业技术学院,计算机网络与管理专业,专科,工程师,主要从事轨道交通及管 廊工程技术管理工作。E-mial: 765369812@ qq. com。 ?通信作者: 翟朝娇, E-mail: 535322337@qq. com。
  • 基金资助:

    安徽省自然科学青年基金项目(1708085QE104); 博士启动基金项目(2015QD06); 安徽省教育厅重点项目(KJ2019A0742)

Setting Spacing Optimizing of Deformation Joints in Cast-in-situ Concrete Utility Tunnel

MA Dongli1, ZHAI Chaojiao2, 3, ∗, ZHANG Guozhi1, TU Xiaoguang4, LI Chao5   

  1. (1. Beijing CERIS International Engineering & Consulting Co., Ltd., Beijing 100000, China; 2. Anhui Province Key Laboratory of Building Structure and Underground Engineering, Anhui Jianzhu University, Hefei 230601, Anhui, China; 3. Anhui Province Engineering Technology Research Center of Urban Construction and Underground Space, Anhui Jianzhu University, Hefei 230601, Anhui, China; 4. Hefei High-tech Zone Integrated Management Gallery Office, Hefei 230601, Anhui, China; 5. Hefei Fulin Engineering Supervision Co., Ltd., Hefei 230601, Anhui, China)
  • Received:2019-04-17 Online:2019-12-31 Published:2020-04-04

摘要:

为科学合理地确定综合管廊变形缝的间距,以合肥市高新区明珠大道段现浇混凝土综合管廊为工程背景,分标准段管廊和双标准段管廊2 种情况,变形缝设置间距分别为20、30、40 m,管廊上部覆土厚度分别为2. 5、3. 5、5 m,运用有限元软件Midas GTS NX 建立三维数值模型,计算得到现浇混凝土综合管廊正常使用阶段的应力和变形,分析综合管廊变形缝间距变化对结构受力变形的影响。通过理论分析和数值计算结果得出以下结论: 1)交通荷载对管廊结构受力和变形有显著影响; 2)综合管廊变形缝间距小于30 m 时,管廊结构变形变化不大,变形缝间距大于30 m 后,随着标准段长度的增加,管廊的变形有较明显的增大; 3)合肥典型地质条件下现浇混凝土综合管廊变形缝间距设置为30 m 时,管廊的应力和变形均远小于规范允许值,因此可以经过科学计算将变形缝间距设置为40 m。

关键词: 综合管廊, 变形缝, 数值模型, 设置间距

Abstract:

In order to scientifically and reasonably determine the deformation joint spacing of the utility tunnel, based on the cast-in-situ concrete utility tunnel of Mingzhu Road in new and high-tech zone in Hefei, standard section utility tunnel and double standard section utility tunnel are considered. The spacing of deformation joints is set at 20 m, 30 m and 40 m respectively and the covering thickness of the upper soil of the utility tunnel is 2. 5 m, 3. 5 m and 5 m respectively. In this paper a three-dimensional numerical model is established using the finite element software Midas GTS NX, the stress and deformation of the cast-in-situ concrete utility tunnel in normal are calculated, and the influence of the deformation joint spacing of the utility tunnel on the structural stress and deformation is obtained. Through theoretical analysis and numerical calculation, the following conclusions are drawn: (1)Traffic load has a significant impact on the stress and deformation of the tunnel structure. (2)When the spacing of deformation joints is less than 30 m, the deformation of the structure does not change much, and when the spacing of deformation joints is more than 30 m, the deformation increases significantly with the increase of the standard section length. (3) When the spacing of deformation joints of the cast-in-situ concrete utility tunnel under typical geological condition in Hefei is set at 30 m, the stress and deformation of the utility tunnel are far less than the allowable value of the code, so the deformation joint spacing can be set at 40 m through scientific calculation.

Key words: utility tunnel, deformation joint, numerical model, setting spacing

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