[1]李东,彭程.混凝土结构跳仓作业方案设计难点与温度应力分析[J].西安建筑科技大学学报(自然科学版),2019,51(04):471-479.[doi:10.15986/j.1006-7930.2019.04.002]
 LI Dong,PENG Cheng.Design difficulties and temperature stress analysis of concrete construction alternative construction[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(04):471-479.[doi:10.15986/j.1006-7930.2019.04.002]
点击复制

混凝土结构跳仓作业方案设计难点与温度应力分析()
分享到:

西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年04期
页码:
471-479
栏目:
出版日期:
2019-08-30

文章信息/Info

Title:
Design difficulties and temperature stress analysis of concrete construction alternative construction
文章编号:
1006-7930(2019)04-0471-09
作者:
李东彭程
(上海大学 土木工程系,上海 200444)
Author(s):
LI Dong PENG Cheng
(Department of Civil Engineering, Shanghai University,Shanghai 200444, China)
关键词:
超长底板温度应力裂缝控制数值计算
Keywords:
super-long basement-floortemperature stress crack control numerical computation
分类号:
TU375
DOI:
10.15986/j.1006-7930.2019.04.002
文献标志码:
A
摘要:
以某超大底板跳仓作业为例,分析了该混凝土底板结构跳仓施工方案设计中的主要难点,并编写了粘弹性温湿耦合有限元数值分析程序,模拟分析了施工阶段底板温度及温度应力变化情况,同时将模拟结果与实测结果进行了对比,验证了数值分析程序的准确性.在此基础上通过设置程序中的边界条件对新老混凝土接缝处的温度及温度应力变化进行了分析,并分析了跳仓间隔对新老混凝土接缝处应力释放的影响,给出了接缝处在不同种类水泥水化热影响下的应力释放规律.其分析结果可填补跳仓施工理论研究的空缺并为相似工程跳仓施工方案设计提供参考
Abstract:
This paper takes the construction of a large base-plate as example,to analyze the main difficulties in the design process of the alternative construction plan. The authors developed a finite element visco-elastic numerical program coupling temperature-moisture and simulated the law of temperature and temperature stress variation about base-plate in construction. At the same time, the simulation results are compared with the measured results to verify the accuracy of the written numerical analysis program. On this basis, the temperature and temperature stress variation about the construction joints and the effect of the concrete placing time-gap on the stress release of old and new concrete joints are analyzed. The paper gives the stress release law of joints under different types of cement hydration heat. Analysis results can fill the gap of the alternative bay methods theory research and provide reference for the design of the construction scheme about similar projects

参考文献/References:

[1]王铁梦. 工程裂缝控制[M]. 北京:中国建筑工业出版社,2005.

WANG Tiemeng. Crack control in engineering structure [M]. Beijing: China Building Industry Press, 2005.

[2]朱伯芳. 大体积混凝土温度应力与温度控制[M]. 北京:中国电力出版社,1999.

ZHU Bofang. Thermal stresses and temperature control of mass concrete [M]. Beijing:China Electric Power Press,1999.

[3]张宇鑫,黄达海,宋玉普. 模拟混凝土跳仓浇筑的高拱坝温度应力仿真分析[J]. 中国港湾建设,2002(4):34-39.

ZHANG Yuxin,HUANG Dahai,SONG Yupu. Simulation analysis on thermal stresses of high arch dam with concrete sequence construction methods[J]. China Harbour Construction ,2002(4) :34-39.

[4]赵英菊. 大体积混凝土无缝施工的理论和应用研究[D]. 西安:西安建筑科技大学,2007.

ZHAO Yingju. Theoretical and application research on seamless construction of mass concrete [D]. Xi′an:Xi′an Univ. of Arch. & Tech. ,2007.

[5]傅学怡,吴兵. 混凝土结构温差收缩效应分析计算[J]. 土木工程学报,2007,40(10):50-59.

FU Xueyi,WU Bing. Analysis and calculation of temperature variation and shrinkage effects on RC building structures[J]. China Civil Engineering Journal,2007,40(10):50-59.

[6]彭英,柯叶君,陈威文. 超长混凝土结构温差收缩效应分析及工程实践[J]. 建筑结构,2010,40(10):86-90.

PENG Ying,KE Yejun,CHEN Weiwen. Analysis of temperature variation and shrinkage effects on over-long concrete structures and engineering practice[J]. Building Structure,2010,40(10):86-89.

[7]曹可之. 大体积混凝土结构裂缝控制的综合措施[J]. 建筑结构,2002,32(8):30-32.

CAO Kezhi. Comprehensive measures for crack control of mass concrete structure [J]. Building Structure,2002,32(8):30-32.

[8]王静梅,刘文秀. 超长混凝土结构取消沉降后浇带技术的研究与应用[J]. 施工技术,2015,44(3):31-34.

WANG Jingmei,LIU Wenxiu. Research and application of canceling the settlement later-pouring band for over Long concrete structure[J]. Construction Technology,2015,44(3):31-34.

[9]袁昆. 后浇带的应力分析及在大体积混凝土中的应用[D]. 西安:西安建筑科技大学,2002.

YUAN Kun. The stress analysis and the application on the massive concrete of the later joint-filled slots [D]. Xi′an:Xi′an Univ. of Arch. & Tech. ,2002.

[10]朱敏,王晓锋,危鼎. 某工程地下室底板大体积混凝土跳仓法施工技术[J]. 施工技术,2015,44(12):45-49.

ZHU Min,WANG Xiaofeng,WEI Ding. Construction technology of mass concrete with alternate segment concrete pouring method for some basement[J]. Construction Technology,2015,44(12):45-49.

[11]谷政学. 首钢迁钢2号热轧工程大体积混凝土施工技术[J]. 工业建筑,2013,43:697-701.

GU Zhengxue. Construction technique of mass concrete for no.2 hot-rolled project under copital fromand steel company [J]. Industrial Building,2013,43:697-701.

[12]王强,孙学锋,危鼎. 跳仓法施工技术要点分析[J]. 施工技术,2015,12(S1):482-485.

WANG Qiang,SUN Xuefeng,WEI Ding. Analysis about construction technology of alternate segment concrete pouring method[J]. Construction Technology,2015,12(S1):482-485.

[13]中华人民共和国住房和城乡建设部.普通混凝土配合比设计规程JGJ55-2011[S]. 北京:中国标准出版社,2011.

Ministry of Housing and Urban-Rural Deuelopnent of P.R. China. Specification for mix proportion design of ordinary concrete JGJ55-2011 [S]. Beijing:China Standards Press,2018.

[14]李东. 大体积混凝土裂缝控制[D]. 西安:西安建筑科技大学,1995.

LI Dong. Crack control of massconcrete[D]. Xi′an:Xi′an Univ. of Arch. & Tech. ,1995.

[15]王铁梦. 工程结构裂缝控制:“抗与放”的设计原则及其在“跳仓法”施工中的应用[M]. 北京:中国建筑工业出版社,2007.

相似文献/References:

[1]李 侠.基于应力吸收层的水泥混凝土沥青加铺路面力学特性分析[J].西安建筑科技大学学报(自然科学版),2012,44(03):420.[doi:10.15986/j.1006-7930.2012.03.019]
 LI Xia.Analysis on stress of asphalt overlay on old Portland cement concrete pavement based on the stress absorption layer[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2012,44(04):420.[doi:10.15986/j.1006-7930.2012.03.019]
[2]李 东,陈华娟.超长钢筋混凝土框架结构硬化阶段温度应力分析[J].西安建筑科技大学学报(自然科学版),2013,45(06):853.[doi:10.15986/j.1006-7930.2013.06.017]
 LI Dong,CHEN Hua-juan.Thermal stress analysis on over-long reinforced concrete frame structure at the hardening stage[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2013,45(04):853.[doi:10.15986/j.1006-7930.2013.06.017]
[3]郝培文,张兰峰.基于连续变温的沥青路面温度应力分析[J].西安建筑科技大学学报(自然科学版),2018,50(02):176.[doi:10.15986/j.1006-7930.2018.02.004]
 HAO Peiwen,ZHANG Lanfeng,Asphalt pavement temperature stress analysis based on continuous variable temperature[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(04):176.[doi:10.15986/j.1006-7930.2018.02.004]
[4]吴云芳,林博,欧阳硕.裂缝对空心桥墩温度场及其应力的影响[J].西安建筑科技大学学报(自然科学版),2018,50(04):485.[doi:10.15986/j.1006-7930.2018.04.004]
 WU Yunfang,LIN Bo,OUYANG Shuo.Effect of crack on temperature field and stress of hollow piers[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(04):485.[doi:10.15986/j.1006-7930.2018.04.004]

备注/Memo

备注/Memo:
收稿日期:2018-06-25
修改稿日期:2019-06-10
基金项目:上海市住房城乡建设管理委员会科研项目(17Z44225)
第一作者:李东(1963-),男,博士,副教授,主要从事混凝土结构裂缝控及监测研究,E-mail:Lidongbibo@163.com
更新日期/Last Update: 2019-09-17