高温下悬索桥主缆丝股锚跨张力的合理控制值研究  

Study of Reasonable Control Values of Wire Strand Tension of Suspension Bridge Main Cable at Anchor Span under High Temperatures

作　　者：沈良成 文武 沈锐利[2] 先正权 董涛 

机构地区：[1]路桥集团第二公路工程局,陕西西安710065 [2]西南交通大学,四川成都610031

出　　处：《桥梁建设》2004年第4期7-9,共3页Bridge Construction

摘　　要：在悬索桥丝股架设阶段,温度变化对锚跨和边跨张力的影响相差较大,施工中在散索鞍能自由活动之前,太大的温度变化将使散索鞍槽内丝股的固定变得困难。介绍了在高温季节确定丝股锚固张力的合理控制值的原则,提出了合理的施工控制建议。At the erection stage of main cable wire strands of a suspension bridge, the temperature variations will cause considerably different influences on the wire strand tension at anchor span and side span. Before the splay saddles can provide free movements in the construction, the too great temperature variations will make it difficult to fix the wire strands into the saddle troughs. In this paper, the principle of determining the reasonable control values for anchor tension of the strands is presented, and the reasonable construction control is proposed as well.

关 键 词：悬索桥 缆索 索张力 高温 施工控制 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]