# [1]蒋德稳,邱洪兴.拔出型试验钢筋与混凝土间滑移量的简化解法[J].东南大学学报(自然科学版),2009,39(4):830-834.[doi:10.3969/j.issn.1001-0505.2009.04.035] 　Jiang Dewen,Qiu Hongxing.Simplified solution of the slip between rebar and concrete based on pull-out test[J].Journal of Southeast University (Natural Science Edition),2009,39(4):830-834.[doi:10.3969/j.issn.1001-0505.2009.04.035] 点击复制 拔出型试验钢筋与混凝土间滑移量的简化解法() 分享到： var jiathis_config = { data_track_clickback: true };

39

2009年第4期

830-834

2009-07-20

## 文章信息/Info

Title:
Simplified solution of the slip between rebar and concrete based on pull-out test

Author(s):
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

TU375
DOI:
10.3969/j.issn.1001-0505.2009.04.035

Abstract:
In order to study the slip between rebar and concrete, the fundamental equations are analyzed and the 2nd order differential equation of the relation between bond stress and local slip are obtained. Based on the power function and linear local bond stress-slip relation, the common solution of bond stress τ, slip s, steel stress εs and concrete stress εc are deduced. According to the Chinese pull-out test of cubic specimens(GB 50152—92)as well as its boundary conditions, the particular solution and accommodated conditions are obtained. It is found that the anchorage length Ld prescribed by Chinese code for design of concrete structures(GB 50010—2002)is less than the critical length Lth. The power function can only produce a complex solution in series form. However, a simple closed solution can be obtained by the linear local bond stress-slip relation. The approximate slip s(x)of different rebar points can be reckoned by the simple closed solution. According to the test results, the adaptability and correctness of the maximum slip solution based on the linear bond stress-slip are testified.

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