UHPC装配式电缆沟设计及抗力性能研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (3): 844-852.

UHPC装配式电缆沟设计及抗力性能研究

徐港^1,2, 王鑫科², 盛唤², 周万清^1,2

1.防灾减灾湖北省重点实验室,宜昌 443002;
2.三峡大学,土木与建筑学院,宜昌 443002

收稿日期:2021-11-01 修回日期:2021-12-29 出版日期:2022-03-15 发布日期:2022-04-08
通讯作者: 周万清,博士,副教授。E-mail:zhouwq1978@163.com
作者简介:徐港(1974—),男,博士,教授。主要从事混凝土结构耐久性方面的研究。E-mail:postxg@163.com
基金资助:
国家级地方高校能源和环境材料化学学科创新引智基地(D20015);土木工程防灾减灾湖北省引智创新示范基地(2021EJD026);宜昌市自然科学研究项目(A20-3-012)

Design and Resistance Performance of UHPC Prefabricated Cable Trench

XU Gang^1,2, WANG Xinke², SHENG Huan², ZHOU Wanqing^1,2

1. Hubei Key Laboratory of Disaster Prevention and Mitigation, Yichang 443002, China;
2. College of Civil Engineering & Architecture, China Three Gorges University, Yichang 443002, China

Received:2021-11-01 Revised:2021-12-29 Online:2022-03-15 Published:2022-04-08

摘要/Abstract

摘要： 本文设计出一种新型的超高性能混凝土(UHPC)装配式电缆沟,并对其承载力和适用性进行了研究。首先对侧板的抗弯性能进行了试验研究,并将试验结果与现行三种规范的计算结果进行对比分析,结果表明基于《纤维混凝土结构技术规程》(CECS 38—2004)求得的承载力、刚度及裂缝宽度的计算值与试验值均较为接近,此规范可作为UHPC装配式电缆沟构件设计的依据。进一步研究了底板与侧板连接方式的可靠性,通过对现浇、接头设在底板采用螺栓约束、杯口节点三种连接方式构件进行试验研究,发现杯口节点试件受力后侧板变形明显,承载力仅为6.7 kN;底板螺栓连接与现浇节点试件相比,破坏截面相同,刚度略低,极限承载力相近,约为杯口节点试件的 2倍,能保证UHPC装配式电缆沟的整体抗力性能。

关键词: 装配式电缆沟, 超高性能混凝土, 承载力计算, 短期刚度, 节点设计, 破坏形态

Abstract: In this paper, a new type of ultra-high performance concrete (UHPC) prefabricated cable trench was designed, and its bearing capacity and applicability were studied. The bending performance of the side plate was experimentally studied, and the test results were compared with the calculation results of the current three specifications. The results show that the calculated values of bearing capacity, stiffness and crack width based on “Technical specification for fiber reinforced concrete structures” (CECS 38—2004) are close to the experimental values. This specification can be used as the basis for the design of UHPC prefabricated cable trench components. The reliability of the connection mode between the bottom plate and the side plate was studied. Through the experimental study on the cast-in-situ, the connection mode with bolt constraint on the bottom plate and the cup joint, it is found that the deformation of the side plate of the cup joint specimen under load is obvious, and the bearing capacity is only 6.7 kN. Compared with the cast-in-situ joint specimen, the failure section of the bottom bolt connection is the same, the stiffness is slightly lower, and the ultimate bearing capacity is similar, which is about twice that of the cup joint specimen. It can ensure the overall resistance performance of UHPC prefabricated cable trench.

Key words: prefabricated cable trench, ultra-high performance concrete, bearing capacity calculation, short-term rigidity, joint design, failure form

中图分类号:

TU37

徐港, 王鑫科, 盛唤, 周万清. UHPC装配式电缆沟设计及抗力性能研究[J]. 硅酸盐通报, 2022, 41(3): 844-852.

XU Gang, WANG Xinke, SHENG Huan, ZHOU Wanqing. Design and Resistance Performance of UHPC Prefabricated Cable Trench[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 844-852.

参考文献

[1] 陈佩,金五一,占辉,等.大型电缆沟预制及安装施工技术[J].施工技术,2017,46(s2):1261-1264.
CHEN P, JIN W Y, ZHAN H, et al. The precasting and hoisting technology of large-sized cable trench[J]. Construction Technology, 2017, 46(s2): 1261-1264 (in Chinese).
[2] 王明志.装配式电缆沟新技术应用探讨[J].武汉大学学报(工学版),2017,50(s1):534-536.
WANG M Z. Discussion on the application of new technology of prefabricated cable trench[J]. Engineering Journal of Wuhan University, 2017, 50(s1): 534-536 (in Chinese).
[3] 周鲲,祁润田,谭彬,等.混凝土预制电缆沟的改进性研究[J].建筑结构,2019,49(s2):578-581.
ZHOU K, QI R T, TAN B, et al. Research on improvement of prefabricated concrete cable trench[J]. Building Structure, 2019, 49(s2): 578-581 (in Chinese).
[4] 蒋勤俭.国内外装配式混凝土建筑发展综述[J].建筑技术,2010,41(12):1074-1077.
JIANG Q J. Summary on development of assembled concrete building both home and abroad[J]. Architecture Technology, 2010, 41(12): 1074-1077 (in Chinese).
[5] 吕元芳,张书亚,张康捷,等.装配式建筑的节能环保研究[J].建筑经济,2021,42(s1):186-188.
LV Y F, ZHANG S Y, ZHANG K J, et al. Research on energy saving and environmental protection of prefabricated buildings[J]. Construction Economy, 2021, 42(s1): 186-188 (in Chinese).
[6] 戴大力.装配式建筑主要存在的问题与对策研究[J].混凝土与水泥制品,2019(8):77-79.
DAI D L. Research on problems and countermeasures of assembly buildings[J]. China Concrete and Cement Products, 2019(8): 77-79 (in Chinese).
[7] 杨博文,戴磊,金鹭云,等.超高性能混凝土(UHPC)研究综述[J].建筑技术,2020,51(12):1422-1425.
YANG B W, DAI L, JIN L Y, et al. Review of research on ultra-high performance concrete[J]. Architecture Technology, 2020, 51(12): 1422-1425 (in Chinese).
[8] 王德辉,史才军,吴林妹.超高性能混凝土在中国的研究和应用[J].硅酸盐通报,2016,35(1):141-149.
WANG D H, SHI C J, WU L M. Research and applications of ultra-high performance concrete (UHPC) in China[J]. Bulletin of the Chinese Ceramic Society, 2016, 35(1): 141-149 (in Chinese).
[9] 邵旭东,邱明红,晏班夫,等.超高性能混凝土在国内外桥梁工程中的研究与应用进展[J].材料导报,2017,31(23):33-43.
SHAO X D, QIU M H, YAN B F, et al. A review on the research and application of ultra-high performance concrete in bridge engineering around the world[J]. Materials Review, 2017, 31(23): 33-43 (in Chinese).
[10] 王会芳,赖建中,杨浩若.超高性能装饰混凝土的制备及性能[J].土木工程与管理学报,2017,34(2):123-127.
WANG H F, LAI J Z, YANG H R. Preparation and properties of ultra high performance decorative concrete[J]. Journal of Civil Engineering and Management, 2017, 34(2): 123-127 (in Chinese).
[11] PASCHALIS S A, LAMPROPOULOS A P. Developments in the use of ultra high performance fiber reinforced concrete as strengthening material[J]. Engineering Structures, 2021, 233: 111914.
[12] 邓广,翁子杰,张国强,等.UHPC轻型建筑部品在装配式建筑中的应用探索:以中建低能耗装配式住宅示范楼为例[J].新建筑,2020(1):98-102.
DENG G, WENG Z J, ZHANG G Q, et al. An exploration on the application of UHPC components of prefabricated buildings based on CCST low: energy assembly residential demonstration building[J]. New Architecture, 2020(1): 98-102 (in Chinese).
[13] 安晓鹏,李清海,武斌.纤维增强混凝土连接的装配式混凝土结构节点性能综述[J].硅酸盐通报,2020,39(11):3399-3406.
AN X P, LI Q H, WU B. Performance of joints for precast concrete elements using cast-in-place fiber reinforced concrete[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(11): 3399-3406 (in Chinese).
[14] 郑七振,刘阳阳,龙莉波,等.超高性能混凝土连接的装配式现浇混凝土框架抗震性能[J].工业建筑,2019,49(10):85-91.
ZHENG Q Z, LIU Y Y, LONG L B, et al. Experimental research on seismic behavior of precast concrete frame connected with UHPC[J]. Industrial Construction, 2019, 49(10): 85-91 (in Chinese).
[15] 马福栋,邓明科,杨勇.超高性能混凝土装配整体式框架梁柱节点抗震性能研究[J].工程力学,2021,38(10):90-102.
MA F D, DENG M K, YANG Y. Seismic experimental study on a UHPC precast monolithic concrete beam-column connection[J]. Engineering Mechanics, 2021, 38(10): 90-102 (in Chinese).
[16] 樊俊江,於林锋.超高性能混凝土(UHPC)在装配式建筑中的应用及质量控制指标[J].混凝土与水泥制品,2020(9):1-4.
FAN J J, YU L F. Analysis of application of ultra-high performance concrete in prefabricated building and its quality control index[J]. China Concrete and Cement Products, 2020(9): 1-4 (in Chinese).
[17] 万冬伟,陈璇,金凌志.不同叠合面超高性能混凝土叠合板延性与抗弯刚度试验[J].河南科技大学学报(自然科学版),2020,41(1):42-48+7.
WAN D W, CHEN X, JIN L Z. Experiment of ductility and bending stiffness of ultra-high performance concrete laminated plates with different laminated surfaces[J]. Journal of Henan University of Science and Technology (Natural Science), 2020, 41(1): 42-48+7 (in Chinese).
[18] 孟宪宏,沙连凯,佟林,等.预应力带肋板与叠合板抗弯性能试验[J].沈阳建筑大学学报(自然科学版),2017,33(1):77-85.
MENG X H, SHA L K, TONG L, et al. Experimental research on flexural performance of prestressed ribbed slab and composite slab[J]. Journal of Shenyang Jianzhu University (Natural Science), 2017, 33(1): 77-85 (in Chinese).
[19] 金新阳.建筑结构荷载取值水准比较研究与规范修订建议[J].建筑结构,2017,47(7):1-4.
JIN X Y. Comparing on load level for building structures and recommendations for revision of Chinese load code[J]. Building Structure, 2017, 47(7): 1-4 (in Chinese).
[20] 徐港,梁桂林,王青,等.混凝土结构设计新旧规范中构件适用性分析结果比较[J].工业建筑,2013,43(1):121-124+143.
XU G, LIANG G L, WANG Q, et al. Comparison of the serviceability analysis between the present and old codes for design of concrete structures[J]. Industrial Construction, 2013, 43(1): 121-124+143 (in Chinese).