|
|
|
| Control Technology for the Temperature of Massive Concrete for Liuzhou Sanmen jiang Bridge |
| HU Yong |
| China Railway Eryuan Engineering Group Co．Ltd，Chengdu，Sichuan 610031，China |
|
|
|
|
Abstract Research purposes:By simulating the massive concrete construction of reinforcement pile cap of main pier， pier shafts，No．0 pylons and segments of box beams of Liuzhou Sanmenjiang Bfidge，and considering the physical and thermal performances of concrete，the inner temperature and stress field of massive concrete were calculated for solving the problem that massive concrete is easy to crack during construction owing to the large difference between inside and outside temperatures of it and providing the useful reference to the future construction of massive concrete．
Research conclusions: Based on the research and calculation analysis，the temperature feature and change regularity of massive concrete were revealed and the standard for controlling temperature of massive concrete Was proposed．The temperature differences within the fixed range between inside and outside the reinforcement pile cap of main pier，pier shafts，No．0 pylons and segments of box beams call be guaranteed by adopting the corresponding temperature control measures，such as adopting the reasonable concrete matching ratio，proper pouring by layer and effective temperature maintenance．
|
|
Received: 15 June 2009
|
|
|
|
|
|
[1] 赵国利.桥梁承台大体积混凝土施工中的温度测控及防 裂技术[J].铁道工程学报, 2005(2): 27 -30.
[2] JTJ041 -2000,公路桥涵施工技术规范[S].
[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.
|
|
|
|
2009, Vol. 26 
