东南大学学报（自然科学版）Issue(z2)：451-454,4.DOI:10.3969/j.issn.1001-0505.2013.S2.049
斜拉桥牵索式挂篮施工中拉索系统定位的关键技术
Key technology of cable system positioning in towing-cable suspended-wagon construction of cable-stayed bridge
摘要
Abstract
To solve the problem that positioning the cable vibration in cable-stayed bridge's towing-cable suspended-wagon in a direct way is difficult, an indirect positioning technology is studied. First, according to the relative relation of the real elevation and the cantilever's elevation, a coordi-nate correction model for the cable vibration is established.The cable duct and stretching institution are changed from the design state into the real state.Then, a cable duct's independent coordinate system is established.Some cable duct's feature points are set at any position.The cable duct's real posture is obtained by measuring the feature points'coordinate and calculating the relation between these points and the cable duct.The cable duct is positioned indirectly in the independent coordinate system.The formula of relative relation between the cable duct and the stretching institution is also established.The positioning elements of the stretching institution are decomposed by the analytic ge-ometry method.The stretching institution is positioned indirectly.The results show that this indirect positioning method can eliminate the effect of stretching institution caused by swing with cantilever and cantilever's presenting-height.The positioning procedure of the stretching institution can be sim-plified, and the positioning process is simple and intuitive.关键词
斜拉桥/牵索式挂篮/拉索系统/定位Key words
cable-stayed bridge/towing-cable suspended-wagon/cable system/positioning分类
天文与地球科学引用本文复制引用
王勇,李晓华,刘为东..斜拉桥牵索式挂篮施工中拉索系统定位的关键技术[J].东南大学学报（自然科学版）,2013,(z2):451-454,4.
