Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs
To optimize the segment storage and hoisting plan of precast segmental composite box girders with corrugated steel web bridges, China’s first precast segmental composite girder bridge with corrugated steel webs is taken as the background. The difference between the precast segmental composite box gi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/3/801 |
| _version_ | 1827750845452648448 |
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| author | Qigang Song Wenqin Deng Duo Liu Huiteng Pei Zongqing Peng Jiandong Zhang |
| author_facet | Qigang Song Wenqin Deng Duo Liu Huiteng Pei Zongqing Peng Jiandong Zhang |
| author_sort | Qigang Song |
| collection | DOAJ |
| description | To optimize the segment storage and hoisting plan of precast segmental composite box girders with corrugated steel web bridges, China’s first precast segmental composite girder bridge with corrugated steel webs is taken as the background. The difference between the precast segmental composite box girders with corrugated steel webs and the traditional concrete box girder is proven by numerical simulation. The stress and deformation characteristics of the segmental girder during storage and hoisting are analysed, and reasonable control measures are proposed. The data suggested that compared with ordinary concrete box girders, the smaller torsional stiffness and lateral stiffness of the precast segmental composite box girder with corrugated steel web segments lead to larger roof stress and deformation during the storage and hoisting periods. The number of storage layers of segmental girders should not exceed two, and the four hoisting point scheme should be adopted for hoisting. It is recommended to set one to two channel steel supports of no less than 20 grade steel between the top and bottom plates to avoid excessive deformation of the roof. With the increase in the segment length, the roof deformation and stress increased regardless of the storage period and the hoisting period. If the safety factor needs to be increased, when the segment length is short (1.6 m–3.2 m), increasing the support size is recommended. When the segment length is longer (4.0 m, 4.8 m), increasing the number of supports is recommended. |
| first_indexed | 2024-03-11T06:50:10Z |
| format | Article |
| id | doaj.art-f7a9788c9fb349e28688a1c354393d83 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T06:50:10Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-f7a9788c9fb349e28688a1c354393d832023-11-17T10:04:20ZengMDPI AGBuildings2075-53092023-03-0113380110.3390/buildings13030801Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel WebsQigang Song0Wenqin Deng1Duo Liu2Huiteng Pei3Zongqing Peng4Jiandong Zhang5College of Civil Engineering, Nanjing Tech University, Nanjing 210000, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 210000, ChinaThe State Key Laboratory on Safety and Health of In-Service Long-Span Bridges, Nanjing 211100, ChinaCommunication Design & Research Institute Co., Ltd. of Jiangxi Prov., Nanchang 330000, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 210000, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 210000, ChinaTo optimize the segment storage and hoisting plan of precast segmental composite box girders with corrugated steel web bridges, China’s first precast segmental composite girder bridge with corrugated steel webs is taken as the background. The difference between the precast segmental composite box girders with corrugated steel webs and the traditional concrete box girder is proven by numerical simulation. The stress and deformation characteristics of the segmental girder during storage and hoisting are analysed, and reasonable control measures are proposed. The data suggested that compared with ordinary concrete box girders, the smaller torsional stiffness and lateral stiffness of the precast segmental composite box girder with corrugated steel web segments lead to larger roof stress and deformation during the storage and hoisting periods. The number of storage layers of segmental girders should not exceed two, and the four hoisting point scheme should be adopted for hoisting. It is recommended to set one to two channel steel supports of no less than 20 grade steel between the top and bottom plates to avoid excessive deformation of the roof. With the increase in the segment length, the roof deformation and stress increased regardless of the storage period and the hoisting period. If the safety factor needs to be increased, when the segment length is short (1.6 m–3.2 m), increasing the support size is recommended. When the segment length is longer (4.0 m, 4.8 m), increasing the number of supports is recommended.https://www.mdpi.com/2075-5309/13/3/801corrugated steel websprecast segmentsegment lengthstorage stagehoisting stagetemporary support |
| spellingShingle | Qigang Song Wenqin Deng Duo Liu Huiteng Pei Zongqing Peng Jiandong Zhang Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs Buildings corrugated steel webs precast segment segment length storage stage hoisting stage temporary support |
| title | Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs |
| title_full | Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs |
| title_fullStr | Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs |
| title_full_unstemmed | Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs |
| title_short | Optimal Design of Segment Storage and Hoisting of Precast Segmental Composite Box Girders with Corrugated Steel Webs |
| title_sort | optimal design of segment storage and hoisting of precast segmental composite box girders with corrugated steel webs |
| topic | corrugated steel webs precast segment segment length storage stage hoisting stage temporary support |
| url | https://www.mdpi.com/2075-5309/13/3/801 |
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