Support Uplift analysis and monitoring of a steel-concrete composite curved pedestrian bridge in the course of construction

doi:10.4028/www.scientific.net/AMR.374-377.2356

CORC > 兰州理工大学 > 兰州理工大学

	Support Uplift analysis and monitoring of a steel-concrete composite curved pedestrian bridge in the course of construction
	Xiang, Chang-Sheng 1,2,3; Fu, Chung 3; Li, Hui 1; Zhao, Geng-Wen 3; Ahmed, Mohamed 3
	2012
会议日期	September 22, 2011 - September 24, 2011
会议地点	Xi'an, China
关键词	Building materials Curricula Diaphragms Errors Finite element method Footbridges Monitoring Residual stresses Steel beams and girders Sustainable development Tankers (ships) Bridge constructions Concrete deck Construction errors Construction steps Dead loads Design load Displacement monitoring Field investigation Field loading test Field test Finite element models Installation error Internal forces Laser measurement systems Mechanical reasoning Mechanical systems Pedestrian bridge Safety issues Steel girder Steel-concrete composite Steel-concrete curved bridge Structural safety Test data
卷号	374-377
DOI	10.4028/www.scientific.net/AMR.374-377.2356
页码	2356-2362
英文摘要	It is essential to avoid or reduce construction errors when field connecting curved steel girders together with diaphragms. Construction errors usually change the mechanical system, create unexpected internal forces and residual stresses in steel girders or diaphragms, which cause construction difficulty of follow-up work and create safety issues. In this article, as a case in point, two inner supports of a curved two- steel girder pedestrian bridge were uplifted when two steel girders being tied together by the diaphragms. To continue upper concrete deck work, a temporarily added dead load at both ends of girder was applied. Through field investigation and based on mechanical reasoning, we detected the main cause of the uplift. Moreover, we built a finite element model to simulate the procedure of construction step by step and stresses of every step were obtained. In the meantime, displacements of the supports were monitored by laser measurement system while the added dead load was released. When the whole bridge construction was completed, a field loading test was taken, displacements and strains were measured. Compared the calculation result with the test data, we drew a conclusion that the installation error produced very low residual stress, and there is no effect to the structural safety under the full design load.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116556]
专题	兰州理工大学土木工程学院
作者单位	1.Northwest Center for Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; 3.Bridge Engineering Software and Technology (BEST), Center University of Maryland, College Park, MD 20742, United States
推荐引用方式 GB/T 7714	Xiang, Chang-Sheng,Fu, Chung,Li, Hui,et al. Support Uplift analysis and monitoring of a steel-concrete composite curved pedestrian bridge in the course of construction[C]. 见:. Xi'an, China. September 22, 2011 - September 24, 2011.