| 新老混凝土粘结的剪切强度研究 |
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| 引用本文： | 袁群,刘健.新老混凝土粘结的剪切强度研究[J].建筑结构学报,2001,22(2):46-50. |
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| 作者姓名： | 袁群 刘健 |
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| 作者单位： | 大连理工大学海岸与近海工程国家重点试验室!辽宁大连 116023,大连理工大学海岸与近海工程国家重点试验室!辽宁大连 116023 |
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| 基金项目： | 国家基础性研究重大项目!(攀登计划 B)5.2子课题，国家自然科学基金!(59778045) |
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| 摘 要： | 本文以试验为基础，假定了新老混凝土粘结层的剪切破坏机构。在选用扩展的 Mises屈服条件及库仑剪破条件下，利用塑性极限分析中的上限定理，推出了新老混凝土粘结层剪切强度的理论解，确定了影响粘结层剪切强度的因素。并进一步从破坏机理上深入地分析了各因素的影响，指出适度的老混凝土粘结面粗糙度有利于获得较高的剪切强度。
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| 关 键 词： | 剪切强度 上限定理 塑性极限分析 新老混凝土粘结 |
| 文章编号： | 1000-6869(2001)02-0046-05 |
| 收稿时间： | 2001-04-05 |
| 修稿时间： | 2001-04-05 |
Study on Adhesive Shear Strength of Young on Old Concrete |
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| YUAN Qun,LIU Jian.Study on Adhesive Shear Strength of Young on Old Concrete[J].Journal of Building Structures,2001,22(2):46-50. |
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| Authors: | YUAN Qun LIU Jian |
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| Affiliation: | YUAN Qun,LIU Jian (State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian,China) |
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| Abstract: | Based on the test results, the failure mechanism of the adhesive layer of young on old concrete is presented. Under the Mises yield condition and Coulomb shear failure condition, the theoretical solution for shear strength of adhesive layer of young on old concrete is deduced, and the factors, which affect the shear strength of adhesive layer, are also determined with the upper bound theorem of plastic limit analysis. The effect of each factor has been analyzed deeply with the failure mechanism, and it is pointed out that the proper roughness of the adhesive surface of old concrete is beneficial to obtain higher shear strength. |
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| Keywords: | adherence of young on old concrete shear strength plastic limit analysis upper bound theorem |
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