地铁管片抗裂度及裂缝宽度试验和计算方法

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (3): 124-127.

地铁管片抗裂度及裂缝宽度试验和计算方法

周海鹰1,李立新2,陈廷国1

1. 大连理工大学建设工程学部, 辽宁大连 116023; 2. 沈阳建筑大学土木工程学院, 辽宁沈阳 110168

收稿日期:2009-11-17 出版日期:2010-06-16 发布日期:2009-11-17
作者简介:周海鹰(1979-),男,辽宁昌图人,博士研究生,主要从事工程结构等方面的研究.E-mail:zhouhaiying1979@sohu.com
基金资助:
沈阳市科技局、财政局资助项目(2007GX-47)

Experiments and calculating method for cracking strength and crack width of the metro segment

ZHOU Hai-ying1, LI Li-xin2, CHEN Ting-guo1

1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, China;
2. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received:2009-11-17 Online:2010-06-16 Published:2009-11-17

摘要/Abstract

摘要：

为了研究钢筋混凝土衬砌管片的开裂性能,对2片 1:1 不同配筋率的钢筋混凝土衬砌管片进行了试验。研究发现,配筋率的提高对钢筋混凝土衬砌管片抗裂度的影响十分有限,随着配筋率的提高平均裂缝间距、最大裂缝宽度减小,但减小幅度不大。根据试验结果,分析了不同配筋率对钢筋混凝土衬砌管片抗裂度和裂缝宽度的影响,给出了考虑衬砌管片高度影响的抗裂度及考虑配筋率影响的最大裂缝宽度实用计算公式,理论计算结果与试验数据吻合良好。

关键词: 衬砌管片, 抗裂度, 裂缝宽度

Abstract:

To investigate the cracking behavior of the reinforced concrete (RC) lining segment, a test of two RC lining segments of fullscale with different reinforcement ratios was carried out. Through the analysis, it was found that increasing the reinforcement ratio has little effect on cracking strength of the RC lining segment, the average crack spacing and the maximum crack width of RC lining segment decreases at a small rate with the increasing of the reinforcement ratio. The effect of different reinforcement ratios on cracking strength and crack width of the RC lining segment was analyzed based on the test results. Formulas for cracking strength considering height and maximum crack width as well as reinforcement ratio are proposed, and the results calculated by formulas show good agreement with those of experiments.

Key words: lining segment, cracking strength, crack width

周海鹰1,李立新2,陈廷国1. 地铁管片抗裂度及裂缝宽度试验和计算方法[J]. 山东大学学报(工学版), 2010, 40(3): 124-127.

ZHOU Hai-ying1, LI Li-xin2, CHEN Ting-guo1. Experiments and calculating method for cracking strength and crack width of the metro segment[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(3): 124-127.

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