Due to the great overall length and self-weight of the inclined column, and the limitation by the construction conditions, the batch construction method of the structural system transform from the temporary support system to the inclined column structure system was adopted in the project. To ensure the safety of the inclined column during the transform proces, the self-built transform monitoring platform was used to real-time monitor the axial column force, the steel strain and the steel bar stress of the inclined columns on the Axis 12 and Axis 13 during the transform process. The ABAQUS finite element software was used to analyze the stress changes of the steel and steel bars in the inclined columns under the actual displacement load, and the simulated values were compared with the monitoring values. The results show that the axial force variables are small during the transform process. The maximum strain variable of the steel at the measuring point in each inclined column is no more than 26.99×10-6, and the maximum stress variable of the steel bars is no more than 4.75 MPa. The stress of each component fluctuates in a small range and the value is small. The variation trend of the simulation values are basically consistent to the monitoring values. It shows that the established three-dimensional finite element model of the inclined column can better reflect the column stress change in the transform process.
Ai Pengpeng
,
Zhu Xiongtao
,
Huang Yonghu
,
Geng Daxin
. Monitoring and Numerical Simulation of Structural System Transform Process of the Steel Reinforced Concrete Inclined Column in Underground Space[J]. Chinese Journal of Underground Space and Engineering, 2024
, 20(S1)
: 335
-343
.
DOI: 10.20174/j.JUSE.2024.S1.40
[1] 中华人民共和国住房和城乡建设部. 关于加强城市地下市政基础设施建设的指导意见[J]. 市政技术, 2021, 39(2): 4-5.
[2] 李邮. 日本枢纽型轨道站点区域地上地下空间立体化特征及设计策略研究[D]. 成都: 西南交通大学, 2021.
[3] 王文. 超高层建筑中斜柱影响及措施研究[D]. 哈尔滨: 哈尔滨工业大学, 2012.
[4] 吴昌键. 型钢混凝土巨型柱受力影响因素的有限元分析[D]. 兰州: 兰州理工大学, 2017.
[5] 颜家胜. 型钢混凝土巨型柱的数值模拟分析[D]. 厦门:厦门大学, 2014.
[6] Liu T, Yang B, Zhang Q L. Health monitoring system developed for tianjin 117 high-rise building[J]. Journal of Aerospace Engineering, 2016, 30(2): 4016004.
[7] Doebling S W, Farrar C R, Prime M B, et al. Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: a literature review[J]. Los Alamos National Laboratory Report LA-13070-MS, 1996, 30(11): 2043-2049.
[8] Aktan A E,Catbas F N, Grimmelsman K A, et al. Issues in infrastructure health monitoring for management[J]. Journal of Engineering Mechanics, 2000, 126(7): 711-724.
[9] 闫芙蓉, 岳小丹, 胡雪源, 等. 考虑土体卸荷力学特性的基坑变形分析[J]. 地下空间与工程学报, 2022, 18(2): 554-561.
[10] 谷淡平, 凌同华, 殷枝荣, 等. 便桥荷载作用下深基坑地下连续墙变形特性分析[J]. 地下空间与工程学报, 2020, 16(6): 1781-1791.
[11] 严再春. 大型地下室核心结构体系转换过程中的仿真分析与施工监测[J]. 建筑施工, 2015, 37(3): 371-374.
[12] Duan S Q, Feng X T, Jiang Q, et al. In situ observation of failure mechanisms controlled by rock masses with weak interlayer zones in large underground cavern excavations under high geostress[J]. Rock Mechanics and Rock Engineering, 2017, 50(9): 2465-2493.
[13] 许前程. 型钢混凝土超大斜柱施工过程受力性能分析[D]. 合肥: 安徽建筑大学, 2014.
[14] 游颖, 张泽涛, 刘学刚, 等. 空间曲面钢结构临时支撑提前拆除方案及监测[J]. 工业建筑, 2021, 51(2): 106-112.
[15] 林俊, 杨立戈, 彭媛, 等. 柳州市网球中心主馆钢屋盖临时支撑的卸载施工[J]. 建筑施工, 2017, 39(4): 500-501.
[16] 杨会伟, 董经民, 郑芳俊, 等. 高耸结构临时支撑卸载过程的数值模拟与监测—以北疆明珠塔为例[J]. 太原理工大学学报, 2021, 52(6): 981-989.
[17] 秦学锋, 侯文崎, 林泓志, 等. 多重体系转换对大跨无柱地下空间结构力学行为影响[J]. 铁道科学与工程学报, 2021, 18(10): 2703-2714.
[18] 杨锦程, 朱旻, 周伟明, 等. 大型交通枢纽地下V型柱体系转换变形监测分析——以黄木岗综合交通枢纽工程为例[J]. 隧道建设(中英文), 2022, 42(11): 1947-1955.
[19] 中华人民共和国住房和城乡建设部. 混凝土结构设计规范(GB 50010—2010)[S]. 北京: 中国建筑工业出版社, 2014.
[20] 陶连金, 吴尚, 丁鹏, 等. 大跨斜撑无柱地铁车站结构地震响应分析[J]. 地下空间与工程学报, 2022, 18(5): 1714-1723.
[21] 任兆丹, 王智勇, 孔超, 等. 公路隧道钢管混凝土拱架偏压长柱承载机理研究[J]. 地下空间与工程学报, 2021, 17(6): 1809-1820.
