Study on metro station models built by superpipe roof method
ZHAO Kai
LUO Furong
JIN Huai
HAO Zhihong
QIAO Chunsheng
CHEN Xiaofan
Abstract：The construction procedures,characteristics and applicability for formations of superpipe roof (SPR) method standard model is introduced in this paper.Three development periods of SPR and related several derived station models based on the standard SPR station are described in detail.By establishing 3D SPR structure-load model,the deformation and internal forces of three spans and double columns model(TSDC),two spans and single column model (TSSC),and single span without column in station hall model(SSC) with long-straight-pipes and different secondary lining types built by bottom-up method and top-down method are compared and checking calculated.The results show that the deformation of SPR stations is small,and it has a little influence on the surface and surrounding environment.Since the internal forces of superpipes are relatively small in SPR bearing system,the force bearing of internal-support-beams and interior columns should be emphatically calculated.A station structure with the secondary linings is safer than the not lining one.For avoiding excessive internal forces of substructure under the construction condition,the thickness of secondary linings needs to be optimized.In those metro station models,TSDC built by top-down method is the safest type,followed by TSSC with thin secondary linings,and the structure stress of SSC is the largest.
Keywords：metrosuperpipe roofstation modelstructure stress
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 8-16,22 )