摘要
在调查PC连续箱梁裂缝形态及分布规律的基础上,全面分析了引起箱梁损伤开裂的原因、影响因素及其裂缝对桥梁性能的影响.在阐述基于应力状态防裂设计思想的基础上,论证了利用数值分析方法研究箱梁开裂问题的可行性.提出桥梁损伤诊断、裂缝成因分析、桥梁防裂对策、修复加固方法、安全评定是PC连续箱梁桥应用中亟待解决的问题.
This paper presents a survey of the cracks conformation and distribution rules in the prestressed concrete box girders. The cause and the influence factors of the cracks and the effects of the cracks to the performance of bridges are analysed. Based on the resist-cracking design method, the feasibility of the numerical method for the box girders cracking is demonstrated. At the same time, it is advanced that the damnification diagnosed, the cracking causes analysis, the resist-cracking tactic, the rehabilitated method and the safety assess of the bridge are the urgency problems for the prestressed concrete box girders.
出处
《北京建筑工程学院学报》
2007年第4期5-8,22,共5页
Journal of Beijing Institute of Civil Engineering and Architecture
