黄河小浪底水利枢纽水文观测悬索桥主缆索力测定

Determination of Main Cable Force of of the Yellow River Xiaolangdi Dam Water Conservancy Suspension Bridge

主缆是悬索桥中最重要的承力结构,基于此,对黄河小浪底水利枢纽观测桥的索力测定原理进行论述,并开展静载试验,测试锚箱内主索在桥面铺装后的自然状态下固有频率及拉力,其值均符合要求,说明该桥主缆承载力满足设计要求,并对日后的养护维修给出建议。

The main cable is the most important bearing structure of suspension bridge, based on this, this paper discussed the principle of cable force measurement, and carried out static load test. The natural fre-quency and tension of the main cable in the anchor box conformed to the requirements, which explained that the bearing capacity of the main cable met the design requirements. This paper also gave advice on maintenance and repair in the future