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 C.1; Li, Hui 2; Zhao, Geng-wen 1; Ahmed, Mohamed 1
	2012
关键词	Steel-concrete curved bridge Construction error Support uplift Displacement monitoring field test
卷号	374-377
DOI	10.4028/www.scientific.net/AMR.374-377.2356
页码	2356-+
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	SUSTAINABLE DEVELOPMENT OF URBAN ENVIRONMENT AND BUILDING MATERIAL, PTS 1-4
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS记录号	WOS:000309192500471
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/37313]
专题	兰州理工大学
通讯作者	Xiang, Chang-sheng
作者单位	1.Univ Maryland, Bridge Engn Software & Technol BEST Ctr, College Pk, MD 20742 USA 2.Minist Educ, Northwest Ctr Disaster Mitigat Civil Engn, Lanzhou, Peoples R China 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Chang-sheng,Fu, Chung C.,Li, Hui,et al. Support Uplift Analysis and Monitoring of a Steel-concrete Composite Curved Pedestrian Bridge in the Course of Construction[C]. 见:.