破损安全桥梁拉索及其系统研究

桥梁拉索破断的统计寿命为3~16年,在桥梁的服役期内,拉索将多次拆换或破断。囿于问题的随机背景,拉索的寿命预测,是一个非确定性的统计量,拉索破断的年月并不确知,因此,拉索骤断没有杜绝。基于破损安全理论,研究桥梁拉索及其系统,冀在实现:拉索骤断,桥梁不致受损或垮塌,随断随换,勿需预测。

Study on Failure Safety Cable Systems of Bridges

Based on the failure safety theory,the study on the failure safety cable systems of the bridges was carried out.The uncertainty of the statistical fatigue-life estimation was avoided.The failure safety cable systems make it possible that the bridge will not collapse abruptly and unexpectedly due to the failure of some cables,and the repair of the damaged or broken cables can be realized right after the cable failure happens without the whole bridge being closed for traffic.