[1]车鸿博,童立元,刘松玉,等.预制装配式波纹钢综合管廊承载性能现场试验研究[J].东南大学学报(自然科学版),2021,51(3):426-434.[doi:10.3969/j.issn.1001-0505.2021.03.010]
 Che Hongbo,Tong Liyuan,Liu Sougyu,et al.Field test study on load-bearing performance of prefabricated corrugated steel utility tunnel[J].Journal of Southeast University (Natural Science Edition),2021,51(3):426-434.[doi:10.3969/j.issn.1001-0505.2021.03.010]
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预制装配式波纹钢综合管廊承载性能现场试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
51
期数:
2021年第3期
页码:
426-434
栏目:
土木工程
出版日期:
2021-05-20

文章信息/Info

Title:
Field test study on load-bearing performance of prefabricated corrugated steel utility tunnel
作者:
车鸿博12童立元12刘松玉12战福军3李洪江12
1 东南大学交通学院, 南京 211189; 2 东南大学岩土工程研究所, 南京 211189; 3 南京联众工程技术有限公司, 南京 211215
Author(s):
Che Hongbo12 Tong Liyuan12 Liu Sougyu12 Zhan Fujun3 Li Hongjiang12
1 School of Transportation, Southeast University, Nanjing 211189, China
2 Institute of Geotechnical Engineering, Southeast University, Nanjing 211189, China
3 Nanjing Lianzhong Engineering and Technology Co., Ltd., Nanjing 211215, China
关键词:
波纹钢结构综合管廊 现场试验 光纤监测 力学特性 变形规律
Keywords:
corrugated steel utility tunnel(CSUT) field test optical fiber monitoring mechanical property deformation rule
分类号:
TU990.3
DOI:
10.3969/j.issn.1001-0505.2021.03.010
摘要:
为了检验新型预制装配式波纹钢结构综合管廊的承载性能,采用新型光纤传感技术和全站仪开展了方拱形双舱综合管廊现场试验,对回填过程中极限载荷作用下各板片的应变应力、接缝螺栓应力、结构变形及沉降、渗漏水状态进行了实时监测与分析.试验结果表明:波纹钢结构综合管廊承载力高,当覆土厚度达到设计值3倍时结构仍未被破坏;增加覆土厚度将引起顶板的环向应变及挠度显著增大,而其他板片的相应监测值变化不明显,覆土厚度为10 m时最大应力值和最大挠度值分别为356.78 MPa和7.90 mm;环向接缝螺栓的轴向应力普遍大于纵向螺栓,最大轴向拉应力为120.96 MPa;综合管廊接头的最大张开量为0.43 mm,未出现漏水现象,仅出现3处小面积湿渍.试验结果均符合当前设计标准或技术规范,可为方拱形双舱波纹钢结构综合管廊的推广、施工及运行维护提供参考.
Abstract:
To study the load-bearing performance of a new prefabricated corrugated steel utility tunnel(CSUT), a field test of the square-arch double-cabin utility tunnel was carried out by using the new optical fiber sensing technology and total station. Real-time monitoring and analysis of the strain stress of each corrugated steel plate, the joint bolt stress, the structural deformation and settlement, and water leakage were conducted under the ultimate load during the backfilling process. The experimental results show that the CSUT structure has a superior bearing capacity and remains undamaged when the backfill height is over three times the design height. The hoop strain and the deflection of the top plate increase significantly with the increase of backfill height, while the corresponding monitoring values of other plates do not change obviously. The maximum stress and the maximum deflection with the backfill height of 10 m are 356.78 MPa and 7.90 mm, respectively. The axial stress of the circumferential joint bolts is generally greater than that of the longitudinal bolts, and the maximum axial tensile stress is 120.96 MPa. The maximum opening of the utility tunnel joints is 0.43 mm, but there is no water leakage, and only three small areas of wet stains appear. The experimental results are in agreement with the current design standard or technical specification, and can provide a reference for the promotion, construction, operation and maintenance of the square-arch double-cabin CSUT.

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备注/Memo

备注/Memo:
收稿日期: 2020-11-15.
作者简介: 车鸿博(1988—),男,博士生;童立元(联系人),男,博士,教授,博士生导师,101010519@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51878157)、江苏省自然科学基金资助项目(BK20181282).
引用本文: 车鸿博,童立元,刘松玉,等.预制装配式波纹钢综合管廊承载性能现场试验研究[J].东南大学学报(自然科学版),2021,51(3):426-434. DOI:10.3969/j.issn.1001-0505.2021.03.010.
更新日期/Last Update: 2021-05-20