|Table of Contents|

Effect of Gradient Temperature Difference on Crack Mechanism of Waterproof Slab Concrete(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年06期
Page:
64-71
Research Field:
Publishing date:

Info

Title:
Effect of Gradient Temperature Difference on Crack Mechanism of Waterproof Slab Concrete
Author(s):
LI Pan-wu1;  HU Ming-feng1;  LI Wei1;  ZHAO Peng2
(1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Shaanxi Architecture Science Research Institute Co., Ltd, Xi'an 710082, Shaanxi, China)
Keywords:
waterproof slab concrete;  gradient temperature difference;  temperature stress;  tensile strength;  crack
PACS:
TU48
DOI:
-
Abstract:
Based on the influence of the temperature stress caused by the temperature difference between the inside and outside of the waterproof slab on the early crack development during the concrete pouring, the temperature stress performance of waterproof slab during construction period was studied. Combined with the actual project, when the temperature difference between the inside and outside of waterproof slab changed, the situation of concrete damage caused by cracks was summarized. In order to further study the crack mechanism of waterproof slab concrete, ANSYS numerical simulation was used to obtain the stress and deformation nephogram under the gradient temperature difference based on the calculation and analysis formula of the main tensile stress of waterproof slab. The ANSYS nephogram analysis results were adopted to study the deformation trend, temperature stress evolution and crack distribution of concrete structures. The results show that the resistance stress of concrete at the transition junction of the combined foundation is weak. In the nephogram, the first crack appears in this area and it spreads faster. The first stress value of waterproof slab increases with the increase of temperature difference. When the pouring temperature is higher, the temperature stress produced by concrete structure is higher. When concrete is poured in the construction stage of waterproof slab, the large temperature difference will lead to large deformation of waterproof slab. The critical temperature difference of cracking in concrete waterproof slab structure is about 25 ℃.

References:

[1] 谈雪姣.独立基础加抗水板基础设计及构造要求[J].四川水泥,2018(2):107.
TAN Xue-jiao.Design and Construction Requirements of Independent Foundation with Water-resistant Plate Foundation[J].Sichuan Cement,2018(2):107.
[2]朱炳寅.独立柱基加防水板基础设计方法的分析[J].建筑结构,2001(11):51-53.
ZHU Bing-yin.Analysis on the Design Method of Independent Plinth and Waterproof Plate Foundation[J].Architectural structure,2001(11):51-53.
[3]朱炳寅.高层建筑筏基设计方法的分析与探索[J].建筑结构,1999(4):54-57.
ZHU Bing-yin.Analysis and Exploration of Raft Design Method for High-rise Building[J].Building Structure,1999(4):54-57.
[4]朱炳寅.对独基加防水板的设计[J].建筑结构:技术通讯,2007(7):4-7.
ZHU Bing-yin.Design of Single Base Plus Waterproofing Board[J].Building Structure:Technical Communication,2007(7):4-7.
[5]张 洁.柱下独立基础加防水板设计方法研究[J].建筑结构,2018,48(增2):775-778.
ZHANG Jie.Study on Design Method of Single-footing with Water-proof Slab Under Column[J].Building Structure,2018,48(S2):775-778.
[6]王军华.独立柱基防水基础施工关键工艺探究[J].山西建筑,2017,43(5):101-102.
WANG Jun-hua.The Key Waterproof Technology of Single Column Foundation[J].Shanxi Architecture,2017,43(5):101-102.
[7]郭 劲.独立柱基加防水板的设计分析[J].建材技术与应用,2009(11):22-23.
GUO Jin.Design and Analysis of Independent Column Foundation and Waterproof Slab[J].Research and Application of Building Materials,2009(11):22-23.
[8]苏柳明.浅谈独立基础加防水板设计与结构计算软件结合应用[J].武汉勘察设计,2012(5):56-57.
SU Liu-ming.Discussion on the Combined Application of Independent Foundation and Waterproof Plate Design and Structural Calculation Software[J].Wuhan Investigation & Design,2012(5):56-57.
[9]MCNERNEY M T,KIM J,BESCHER E.Construction,Instrumentation,and Performance of a Double Sized Slab Designed for Airport Runways[C]//ASCE.Proceedings of the International Conference on Highway Pavements and Airfield Technology.Philadelphia:ASCE,2017:169-206.
[10]吴振河.独立基础加防水板下设聚苯板软垫层施工方法刍议[J].建材与装饰,2018(48):4-5.
WU Zhen-he.Discussion on Construction Method of Soft Cushion of Polystyrene Board Under Independent Foundation and Waterproof Board[J].Construction Materials and Decoration,2018(48):4-5.
[11]王大智.桩基承台加防水板基础设计中防水板固端弯矩的确定[D].天津:天津大学,2017.
WANG Da-zhi.Determination of Fixed-end Moment for Waterproof Slabs in the Foundation Design Consisting of Pile Caps and Waterproof Slabs[D].Tianjin:Tianjin University,2017.
[12]KANDA T,MOMOSE H,ISHIZEKI K,et al.Impacts of Trace Additives and Early-stage Curing Conditions on the Shrinkage Cracking Resistance of Blast-furnace Slag Cement Concrete[J].Journal of Advanced Concrete Technology,2016,14(8):475-488.
[13]谭 玲.混凝土坝内外温差控制标准及方法的研究[D].北京:华北电力大学,2014.
TAN Ling.The Control Standard and Method of Temperature Difference Between Inside and Outside of Concrete Dam[D].Beijing:North China Electric Power University,2014.
[14]赵占山,付素娟,崔少华.独立基础加防水板裂缝成因分析[J].华北地震科学,2013,31(增1):1-4.
ZHAO Zhan-shan,FU Su-juan,CUI Shao-hua.Analysis of the Crack Initiation for the Independent Foundation and Waterproof Board[J].North China Earthquake Science,2013,31(S1):1-4.
[15]赵 鹏.独立基础加防水板联合基础的抗裂分析[D].西安:长安大学,2011.
ZHAO Peng.The Anti-cracking Analysis of the Joint Based Constituted by Independent Foundation Add Waterproof Board[D].Xi'an:Chang'an University,2011.
[16]KURIAKOSE B,RAO B N,DODAGOUDAR G R.Early-age Temperature Distribution in a Massive Concrete Foundation[J].Procedia Technology,2016,25:107-114.
[17]李永春.钢筋混凝土矩形板薄膜效应的有限元分析[D].武汉:华中科技大学,2006.
LI Yong-chun.Finite Element Analysis of Reinforced Concrete Rectangular Slab Membrane Effect[D].Wuhan:Huazhong University of Science & Technology,2006.
[18]张自喜,孟宪磊.混凝土浇筑温度的降温有效率分析[J].云南水力发电,2018,34(4):96-98.
ZHANG Zi-xi,MENG Xian-lei.Analysis of Cooling Efficiency of Concrete Casting Temperature[J].Yunnan Water Power,2018,34(4):96-98.
[19]蹇兆雷.地下室底板混缝控制[J].中华民居,2014(8):326-327.
JIAN Zhao-lei.Mixed Seam Control of Basement Floor[J].China Homes,2014(8):326-327.
[20]YOUSEFIEH N,JOSHAGHANI A,HAJIBANDEH E,et al.Influence of Fibers on Drying Shrinkage in Restrained Concrete[J].Construction and Building Materials,2017,148:833-845.
[21]ELSAFTY A,GRAEFF M K,EL-GHARIB G,et al.Analysis,Prediction,and Case Studies of Early-age Cracking in Bridge Decks[J].International Journal of Advanced Structural Engineering,2016,8(2):193-212.
[22]卢娟娟.大体积混凝土结构裂缝控制综合措施[J].农业科技与信息,2008(20):44-45.
LU Juan-juan.Comprehensive Measures for Crack Control of Mass Concrete Structure[J].Agricultural Science-technology and Information,2008(20):44-45.
[23]曾宪哲.大体积混凝土底板温度裂缝的研究[D].西安:长安大学,2009.
ZENG Xian-zhe.Research of Temperature Crack in Mass Concrete Baseplate[D].Xi'an:Chang'an University,2009.
[24]李潘武,曾宪哲,李博渊,等.浇筑温度对大体积混凝土温度应力的影响[J].长安大学学报:自然科学版,2011,31(5):68-71.
LI Pan-wu,ZENG Xian-zhe,LI Bo-yuan,et al.Influence of Placement Temperature on Mass Concrete Temperature Stress[J].Journal of Chang'an University:Natural Science Edition,2011,31(5):68-71.

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Last Update: 2019-11-26