钢筋混凝土早期约束变形性能分析

侯景鹏; 袁勇

doi:10.13204/j.gyjz200901021

钢筋混凝土早期约束变形性能分析

doi: 10.13204/j.gyjz200901021

侯景鹏¹,
袁勇²

1.
1. 东北电力大学建筑工程学院,吉林吉林 132012;
2.
2. 同济大学土木工程学院,上海 200092

基金项目:

国家自然科学基金项目资助(50678133);东北电力大学博士基金项目资助(BSJXM200703)

详细信息

作者简介:
侯景鹏,男,1973年5月出生,副教授,博士.E-mail:houjingpeng@mail.nedu.edu.cn

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- 文章访问数: 107
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- PDF下载量: 38
- 被引次数: 0
出版历程
- 收稿日期: 2008-01-28
- 刊出日期: 2009-01-20

ANALYSIS OF RESTRAINED DEFORMATION PROPERTIES OF REINFORCED CONCRETE AT EARLY AGE

Hou Jingpeng¹,
Yuan Yong²

1.
1. School of Civil Engineering,Northeast University of Electric Power,Jilin 132012,China;
2.
2. School of Civil Engineering,Tongji University,Shanghai 200092,China

摘要

摘要: 约束变形引起的现浇混凝土结构早期开裂是工程中存在的普遍现象,这种混凝土未成熟期裂缝影响结构的正常使用、耐久性甚至安全性。从材料、结构和施工环境三方面的影响因素出发,对混凝土早期变形裂缝进行综合分析,着重利用裂缝计算的粘结滑移理论,建立轴向配筋构件在约束变形下的开裂机制模型和裂缝参数计算,并对荷载作用和变形作用下裂缝发展以及力学性能的主要特点及差异进行分析比较。
- 钢筋混凝土 /
- 约束 /
- 变形 /
- 开裂
Abstract: Cracking of concrete caused by early age volume changes such as shrinkage and thermal deformati on is always a problem for cast-in-place concrete structures. Such premature cracki ng affects the serviceability, durability, and even safety of the concrete structure. Integrated analysis is preformed for deformation-caused cracking from the aspects of materials, structures and constructions. Based on the bond-slip theory, cracki ng mechanism and parameters are analyzed and calculated for the axial restrained reinforced concrete members, and finally the differences in mechanical properties between load-caused and deformation-caused crackings are compared.
- reinforced concrete /
- restraint /
- deformation /
- crackin

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参考文献(6)

[2] 袁勇. 混凝土结构早期裂缝控制[M]. 北京: 科学出版社, 2004: 25-30.

王铁梦. 工程结构裂缝控制[M]. 北京: 中国建筑工业出版社, 1997: 1-10.

[3] 富文权, 韩素芳. 混凝土工程裂缝分析与控制[M]. 北京: 中国铁道出版社, 2002: 33- 35.

[4] Pigon M. Equipment for the Analysis of the Behavior of Concrete Under Restrained Shrinkage at Early-Ages [J]. Magazine of Concrete Research, 2000, 52(4): 297-302.

[5] Gilbert R L. Shrinkage, Cracking and Deflection-the Serviceability of Concrete Structures [J]. Electronic Journal of Structural Engineering, 2001, 1(1): 2-14.

[6] Sule M, Breugel K Van. Cracking Behavior of Reinforced Concrete Subjected to Early-age Shrinkage[J]. Materials and Structures, 2005, 34(7): 284-292.

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