Fast Algorithm and Its Application in Construction Monitoring of Parallel Strand Cables

Autor:	Chunguang Dong, Zhuojie Zhang, Yonghui Huang, Ronghui Wang
Rok vydání:	2015
Předmět:	Engineering Mathematical model Iterative method business.industry Numerical analysis Process (computing) Building and Construction Structural engineering Deck Catenary Pylon Cable theory business Civil and Structural Engineering
Zdroj:	Journal of Bridge Engineering. 20
ISSN:	1943-5592 1084-0702
DOI:	10.1061/(asce)be.1943-5592.0000699
Popis:	A fast algorithm for determining the installation force of parallel strand cables is proposed in this paper. Because cable-stayed bridges are flexible structures, the algorithm must consider the sag effect of cable stays as well as the prestressing loss caused by displacements of the deck and the pylon when erecting stay cables with a strand-by-strand method. Based on the principle of the isotension method for parallel strand cables, two basic problems involved in the stretching process and the corresponding numerical computing method are fully demonstrated in this paper. To consider the nonlinearity of cables, catenary theory is used for determining the cable shape and cable forces during the entire loading process. According to said method, a corresponding calculation program was compiled, followed by an additional error analysis. Case studies are provided to compare the results calculated by the program with data measured from an ongoing road-rail cable-stayed bridge and from other calculation ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d62d7d3f32405db74186b8dedb041a93 https://doi.org/10.1061/(asce)be.1943-5592.0000699 Zobrazit plný text záznamu