[1]于卫红,王文胜,夏春梅.大体积混凝土底板施工的综合防裂技术[J].南京师范大学学报(工程技术版),2005,05(03):084-86.
　YU Weihong,WANG Wensheng,XIA Chunmei.The Finite Element Analysis of Simulation Example on Mass Concrete Construction[J].Journal of Nanjing Normal University(Engineering and Technology),2005,05(03):084-86.
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大体积混凝土底板施工的综合防裂技术
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
05卷
期数:
2005年03期
页码:
084-86
栏目:
出版日期:
2005-09-30

文章信息/Info

Title:
The Finite Element Analysis of Simulation Example on Mass Concrete Construction
作者:
于卫红; 王文胜; 夏春梅
南京师范大学电气与自动化工程学院, 江苏南京210042
Author(s):
YU Weihong;  WANG Wensheng;  XIA Chunmei
School of Electrical and Automation Engineering, Nanjing Normal University,Jiangsu Nanjing 210042, China
关键词:
大体积混凝土;  防裂;  温控
Keywords:
m ass concrete;  fin ite elem ent;  tem pe ra ture contro l
分类号:
TU755
摘要:
大体积混凝土体积庞大,混凝土浇筑后释放出大量水化热,由于体积较大,聚集在混凝土内部的热量不易散发,混凝土内部温度较高,造成混凝土内外温差较大.由于约束的影响,在混凝土的升降温过程中会引起混凝土内部温度应力剧烈变化而导致混凝土结构产生有害裂缝,施工难度较大.结合南京某综合大楼基础底板大体积混凝土工程施工实例,施工前用有限元分析模拟大体积混凝土温度场,根据分析结果制定施工方案,优化混凝土配合比.现场埋设了温度监控点,施工中根据监控信息随时调整养护方案,从而做到信息化施工.实践证明理论分析得出的温度变化规律与实测结果基本符合,采取的施工方案安全可靠,上述综合防裂技术措施的应用确保了该工程大体积混凝土防裂目标的实现.
Abstract:
The dim ens ion o f them ass concre te is very huge. A fter the concrete is poured, a g reat dea l o f cem ent hea t of hydration is g iven of.f The heat quantity congreg ated in the concrete can not em it eas ily because o f the hug e dim ension and the rap id r ise in the tem pera ture of insidem ass concrete, so the temperature difference between interna l and ex terna l concrete is very g rea t. In the course o f the r ise and drop of the temperature, the temperature stress inside concrete changes greatly because o f the restriction, w hich induces the de le terious crack to com e in to being and the construction of the m ass concrete to be difficu lt. Th is article inco rporates w ith a practice fo rm ass concrete construction o f the ra ft founda tion o f the com prehensive bu ilding in N an jing. The tem perature fie ld of them ass concre te is analyzed and simu lated by the finite e lem ent m ethod before construction, and the construction project and the optim ized m ix ture propo rtion are m ade accord ing of the resu lt. The purpo se of the inform ative construction is ach ieved tha t the tem perature mon itoring places are d isposed and them a inta in pro ject is adjusted at any mom ent according to them on-i tor ing inform ation. The practice proves that the tem pera ture va riety ru le ach ieved by theoretic analysis is about the sam e as testing result, the construction pro ject adopted is safe and cred ib le. The application o f the above techn ique m easures assures the successful construction.

参考文献/References:

[ 1] 龙志飞. 有限元法新论[M ]. 北京: 中国水利水电出版社, 2001. 45 -50.
[ 2] 王铁梦. 工程结构裂缝控制[M ] . 北京: 中国建筑工业出版社, 1997. 66 -68.
[ 3] 叶琳昌, 沈义. 大体积混凝土施工[M ] . 北京: 中国建筑工业出版社, 1987. 115 -119.
[ 4] 章熙民, 任泽霈, 梅飞鸣, 等. 传热学[M ]. 北京: 中国建筑工业出版社, 1984. 128 -135

备注/Memo

备注/Memo:
作者简介: 于卫红( 1966-) , 女, 讲师, 主要从事有限元分析与优化设计等方面的教学与研究. E-m ail: lze@ s ina. com
更新日期/Last Update: 2013-04-29