The Arch Support Construction and Hydration Heat Analysis of the First Bridge over Yangtze River in Hejiang

Abstract:

The arch support of the First Bridge over Yangtze River in Hejiang used the stratified and graded casting process in mass concrete pouring process. By means of optimizing the concrete mix proportion design, using high mixing amount of fly ash concrete, reducing heat release rate of concrete early hydration heat, delaying the time of maximum temperature rise, and combining turn-over forms and water storage and other surface heat preservation measures, the temperature difference between inside and outside concrete was reduced and the cracking of mass concrete was avoided. Finite element analysis of hydration heat was done to verify the feasibility of the construction scheme.

• Periodical: Applied Mechanics and Materials (Volumes 291-294)
• Pages: 1122-1127
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.291-294.1122
• Online since: February 2013
• Authors: Yan Feng Luo, Da Yan Qin, Yun Zhang
• Keywords: Arch Support, Hydration Heat, Mass Concrete

References

[1] Zhu Bofang. The temperature stress and temperature control of mass concrete[M], Beijing: China Electric Power Press, 1999. 3.

[2] Zhong Xiaolin et al. Implementation guide of Construction specifications of mass concrete,. [M], Beijing: China Building Industry Press , 2011. 5.

[3] Construction material institute of Water conservancy and hydropower institute. Mass concrete[M], Beijing: Water conservancy and Hydropower Press , (1990).

[4] Liu Xiaohua, Wang Yi, Liu Renjun. The design and application of new flip formwork of RCC cofferdam in Three Gorges project phase III[J], China three gorges construction, 2003(10).