PVC 管封堵窄后浇带施工技术研究

作者：胡长明¹,杨坤达¹,王婷¹,田鹏刚²,张丽莎³,王雅辉¹

作者简介：

胡长明,博士,教授,E⁃mail:hu. tm@ 163. com

作者单位：

1. 西安建筑科技大学,陕西西安 710055; 2. 陕西建工控股集团未来城市创新科技有限公司,陕西西安 712000; 3. 未来城市建设与管理创新联合研究中心,陕西西安 712000

基金项目：

∗未来城市建设与管理创新联合研究中心“ 揭榜挂帅” 科研项目(2023WHZ0129)

摘要：

后浇带具有减小混凝土早期收缩、解决沉降差的优点,在超长结构中得到了广泛应用. 以浙江省杭州市良渚新城谢村三期公寓项目为背景,对后浇带进行改进,采用 PVC 管代替传统封堵材料,减小后浇带宽度,提高了施工便捷性. 结合新型 PVC 管封堵窄后浇带施工技术,对减小后浇带宽度进行理论计算,并在工程现场进行了应变监测. 研究结果表明,采用新型 PVC 管封堵窄后浇带施工工艺可提升封堵效果,从而保证后浇带的可靠性.

关键词：后浇带;PVC 管;监测 ;施工技术

English：

Post⁃pouring belts, having advantages such as reducing the early shrinkage of concrete andsolving the sedimentation difference, are widely used in super⁃long structures. Based on Phase⁃IIIApartment Project of Xiecun Village in Liangzhu New Town, Hangzhou City, Zhejiang Province, thepost⁃pouring belt was improved. The PVC pipe was used instead of the traditional sealing material toreduce the width of the post⁃pouring belt and improve the convenience of construction. Combined with theconstruction technology of a new PVC pipe plugging narrow post⁃pouring belt, the theoretical calculationof reducing the width of the post⁃pouring belt was carried out, and the strain monitoring was implementedon the engineering site. The results indicate that the construction technology of the new PVC pipeplugging narrow post⁃pouring belt can improve the plugging effect to ensure the reliability of the post⁃pouring belt.

[1]	刘金鑫,马冲,张东健,等. 利用充气芯模进行后浇带施工方法研究[J]. 施工技术,2017,46(S2):583⁃585.LIU J X,MA C,ZHANG D J,et al. Study on construction methodof post pouring belt with pneumatic core [ J ]. Constructiontechnology,2017,46(S2):583⁃585.
[2]	江涛,李万旺,文涛,等. 一种后浇带收口气泡膜模板施工方法[J]. 城市建设理论研究(电子版),2019(13):131.JIANG T,LI W W,WEN T,et al. Construction method of closedbubble film template for post⁃pouring belt [ J ]. Theoreticalresearch in urban construction,2019(13):131.
[3]	胡长明,梅源,张乃荣,等. 超长预应力混凝土梁温度场数值模拟与分析[ J]. 西安建筑科技大学学报( 自然科学版),2010,42(3):335⁃341.HU C M,MEI Y,ZHANG N R,et al. Numerical simulation andanalysis for temperature field of over⁃length and pre⁃stressedconcrete beam[J]. Journal of Xi’an University of Architecture &Technology (natural science edition),2010,42(3):335⁃341.
[4]	胡长明,韩大富,李增福,等. 大体积混凝土施工关键技术[M]. 北京:中国建筑工业出版社,2017.HU C M, HAN D F, LI Z F, et al. Key technology of massconcrete construction [ M ]. Beijing: China Architecture &Building Press,2017.
[5]	张良辰,夏国光. 膨胀加强带与后浇带组合应用技术[ J]. 水运工程,2019(S1):115⁃119.ZHANG L C, XIA G G. Application technology of combiningexpansion reinforcing zone with post⁃cast zone [ J ]. Port &waterway engineering,2019(S1):115⁃119.
[6]	潘旦光,付相球,谭晋鹏,等. 北京新机场结构后浇带施工控制[J]. 工程力学,2020,37(S1):145⁃150.PAN D G, FU X Q, TAN J P, et al. Construction control ofsturctural post⁃casting belts of Bejing New Airport [ J ].Engineering mechanics,2020,37(S1):145⁃150.
[7]	陈顺,南建林. 超长地下结构后浇带的宽度和配筋率对应力释放的影响分析[C] / / 第十四届全国混凝土及预应力混凝土学术会议论文集,2007.CHEN S, NAN J L. Analysis of the influence of width andreinforcement ratio of post pouring strip on stress release in ultralong underground structures [ C ] / / Proceedings of the 14thnational conference on concrete and prestressed concrete,2017.
[8]	张吉柱. 超长混凝土结构后浇带有效作用的关键性影响因素分析[J]. 建筑科学,2010,26(7):66⁃71.ZHANG J Z. Research on post⁃casting band’ s actual effect insuper long reinforced concrete structures[ J]. Building science,2010,26(7):66⁃71.
[9]	潘立. 对导致混凝土后浇带失效的横穿钢筋最小配筋率的研究[J]. 建筑科学,2009,25(11):1⁃4.PAN L. Research on the minimum and invalidated ratio ofreinforcing steel bars across the post⁃casting band in concretestructures[J]. Building science,2009,25(11):1⁃4.
[10]	全学友,孙会郎. 后浇带的设置方案对抗裂效果的影响[ J].建筑结构,2004,34(6):22⁃24.QUAN X Y,SUN H L. Influence of beam⁃slab floor settled post⁃poured strip schemes on the capacity of resistant crack [ J ].Building structure,2004,34(6):22⁃24.
[11]	李雁英,吴京,张玉明. 混凝土楼盖结构设计中后浇带的留设及封闭时间探讨[J]. 工业建筑,2006,36(5):27⁃29,78.LI Y Y, WU J, ZHANG Y M. Discussion on placement andclosure time of post⁃poured strips of concrete floor structures[J].Industrial construction,2006,36(5):27⁃29,78.
[12]	于亦龙,姜玉龙,周千帆,等. 超长混凝土结构后浇带提前封闭施工技术[J]. 施工技术(中英文),2023,52(14):90⁃93.YU Y L,JIANG Y L,ZHOU Q F,et al. Early closure constructiontechnology of post⁃cast strip of super⁃long concrete structure[J].Construction technology,2023,52(14):90⁃93.
[13]	丁国荣,王晓锋. 点板式楼座沉降后浇带提前封闭施工技术[J]. 施工技术,2016,45(9):63⁃65.DING G R,WANG X F. Advanced⁃closed construction technologyof late poured band of point plate buildings [ J]. Constructiontechnology,2016,45(9):63⁃65.
[14]	王婷. 混凝土结构温度后浇带力学特性研究[D]. 西安:西安建筑科技大学,2022.WANG T. Study on mechanical properties of temperature post caststrip of concrete structure [ D]. Xi ’ an: Xi ’ an University ofArchitecture and Technology,2022.
[15]	王铁梦. 工程结构裂缝控制[ M]. 北京:中国建筑工业出版社,1997.WANG T M. Crack control of engineering structure[M]. Beijing:China Architecture & Building Press,1997.

应用研究 > 2025年 第卷 第11期