CAJ | 학술논문

秭归青干河大桥钢管拱桁架节段吊装采用缆索吊机斜拉扣挂悬臂拼装施工，吊装至第十节段时，曾发生后锚碇砼开裂施工事故，通过对致裂问题探讨并采取施加恒定预顶力，同时辅以压重和过载等处理方法，顺利将钢管拱安装至合拢。实践表明，该处理方法较为成功，值得探讨与借鉴。
자귀청간하대교강관공항가절단조장채용람색조궤사랍구괘현비병장시공，조장지제십절단시，증발생후묘정동개렬시공사고，통과대치렬문제탐토병채취시가항정예정력，동시보이압중화과재등처리방법，순리장강관공안장지합롱。실천표명，해처리방법교위성공，치득탐토여차감。
The steel tubular arch truss articulations of Qinggan River bridge were fastened and connected by cableway crane with cable-stayed cantilever. But crack appeared on hind anchorage block when the tenth articulation was suspending. Based on the study of the cause, some treatment means such as pre-stressing steady upward force, weighting and pressing with superimposed load were taken, the steel tubular arch was at last connected successfully. It proves that the treatment means are available and worth studying.