无粘结预应力技术在超长结构中应用的探索

Application of Unbonded Prestressing Technology in Super-long Structures

超长结构的裂缝控制是当今工程界的一个热点技术问题。本文结合工程实践,研究了超长框架结构温度应力的计算分析以及采用无粘结预应力技术防止超长结构因温度作用开裂的问题,并提出相应的设计建议。

Cracking control of super-long structures is now a hot issue in engineers' circle. This paper studies the computing analysis of temperature stress of super-long frame structures and the application of unbonded prestressing technology to avoid cracking of super-long structures and provides relevant advices on design.