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近年来,我局在西南地区承揽的铁路工程项目逐渐增多,其中的桥梁工程,由于受当地地理条件的限制,多为高桥墩的曲线桥。选固定式缆索起重机（以下简称为缆吊）作为曲线桥桥墩施工中的水平和垂直运输设备,具有一次投资较小、可以倒用、能大量节约工天和运费等优点,尤其是在水深流急、陡峭峡谷或新线跨越既有公路、铁路等地面水平运输受限制的施工环境中更显示出其长处,故受到人们的青睐。 但是,因为缆吊的作业范围不能超出主索的铅垂面,故应用于曲线桥桥墩施工有一定的局限性。
In recent years, the number of railway projects contracted by our bureau in the southwest region has been gradually increasing. Among them, the bridge projects are mostly curved bridges of Gaoqiao pier due to the restriction of local geographical conditions. Select fixed cable cranes (hereinafter referred to as cable cranes) as the horizontal and vertical transport equipment in the construction of curve bridge piers, which has the advantages of small investment, reversible use, great saving of working days and freight, etc., especially in deep water flow It is favored by people in acute, steep canyons and new construction environments that have more limited horizontal transport across existing roads and railways. However, because the scope of operation of the cable hanger can not exceed the vertical plane of the main cable, there are some limitations to be applied to the construction of curved bridge piers.