WO2023047408A1 - Tablier composite en rcc et superstructure de pont à poutres à âme ouverte en acier à membrure inférieure parabolique précontrainte et suspendue - Google Patents

Tablier composite en rcc et superstructure de pont à poutres à âme ouverte en acier à membrure inférieure parabolique précontrainte et suspendue Download PDF

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Publication number
WO2023047408A1
WO2023047408A1 PCT/IN2022/050200 IN2022050200W WO2023047408A1 WO 2023047408 A1 WO2023047408 A1 WO 2023047408A1 IN 2022050200 W IN2022050200 W IN 2022050200W WO 2023047408 A1 WO2023047408 A1 WO 2023047408A1
Authority
WO
WIPO (PCT)
Prior art keywords
bridge
composite
prestressed
bottom chord
girder
Prior art date
Application number
PCT/IN2022/050200
Other languages
English (en)
Inventor
Pramod Kumar Singh
Original Assignee
Pramod Kumar Singh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pramod Kumar Singh filed Critical Pramod Kumar Singh
Priority to MX2024003543A priority Critical patent/MX2024003543A/es
Priority to AU2022351932A priority patent/AU2022351932A1/en
Priority to KR1020247012107A priority patent/KR20240060816A/ko
Priority to CN202280009434.0A priority patent/CN116802359A/zh
Priority to US18/271,410 priority patent/US20240060253A1/en
Priority to IL311634A priority patent/IL311634A/en
Priority to JP2023541533A priority patent/JP2024507436A/ja
Priority to CA3205909A priority patent/CA3205909A1/fr
Publication of WO2023047408A1 publication Critical patent/WO2023047408A1/fr
Priority to US18/238,383 priority patent/US20240271375A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D6/00—Truss-type bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D6/00—Truss-type bridges
    • E01D6/02—Truss-type bridges of bowstring type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/268—Composite concrete-metal
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal
    • E01D2101/32—Metal prestressed

Definitions

  • the invented ‘Composite RCC deck and prestressed parabolic bottom chord underslung open web steel girder bridge superstructure’ falls in the area of Bridge Engineering in Civil Engineering.
  • the short (10m) to long (200m) span superstructures can be used for infrastructure projects related to single or multiple lane road, rail, metro rail, fly over and sea link.
  • HTS tensile strength
  • Figure 1 shows line diagram of the girder where top chord (1), bottom chord (2) and web members (3) are shown. Cable anchorage details at ‘A’ are shown in Figure 2.
  • the 27T15 standard cables (4) and anchorages (5) are shown within and aligned along bottom chord.
  • the composite RCC deck is cast over top chord, supporting cross girder and stringer beams, using shear connectors (6).
  • End cross girder (7) connects the two main girders. Girders at the ends are supported over bearings (8), and RCC deck slab, beyond the girder, is supported over dirt wall (9).
  • Figure 3 shows FEM model of the bridge.
  • Figure 4 shows service load stresses for the prestressed composite 125mx9m bridge.
  • Figures 5 through 10 show member stresses during corresponding construction stages 1 through 6.
  • Line diagram (Fig. 11), 3-d FEM model view (Fig. 12), and Live Load axial stresses (Fig. 13) for the 50mx2.5m bridge are shown.
  • a line sketch for 50mx23m superstructure arrangement is given in Fig. 14.
  • a typical 125m span and 9m deep composite prestressed 2-lane open web steel girder bridge is designed for which 2-d line sketch is given in Figure 1.
  • the top chord consists of 500mm x 500mm x 16mm box section, the bottom chord is 500mm x 600mm x 22mm box section, and the web members have the section of 500mm x 200mm x 16mm.
  • Typical anchorage system at the supports of the under slung bridge superstructure is shown in Figure 2.
  • E410 grade steel having 410N/mm 2 yield stress is used in the end panels for high strength in the anchorage, support and the transition zones.
  • Two number 27T15 cables for the 125m span case for each girder are used. Loads from the cable anchors, apart from the top and bottom plates, are transmitted through the extended two number E410 grade bottom chord side plates and one number central stiffening plate (10).
  • the anchorage system must be designed with high fos, shop fabricated, and tested before assembly.
  • the bridge girder panels may be fabricated in the workshop using welded or HSFG bolted connections. The panels are transported to the site where these are assembled and connected, and the individual girders are lifted to securely placed over the bearings using jacks or cranes or any other suitable device. The cross members for top and bottom chords may be then connected. Deck slab for the superstructure is cast in symmetrical parts using bonding agent and stage prestressing.
  • HTS prestressing cables are laid in the parabolic bottom chord. Prestressing of the strands is carried out in stages as per design. Results of the different construction stages for member stresses and maximum deflection are shown in Figures 4 through 10 for the 125m x 9m bridge case.
  • Stage 1 Launch the girder including cross members, cross girders and stringer beams and suitably apply a prestress of 2000 kN (Fig.5). Deflection at mid span of the girder in this stage is 17.8mm (downward).
  • Stage 2 Apply additional 2000 kN prestress (Fig. 6). Deflection at mid span of the girder in this stage is 151.7mm (upward).
  • Stage 3 Cast deck slab in l/5 th spans from either end. This stage includes construction load of 5 kN/m 2 . Deflection at mid span of the girder in this stage is 3.5mm (upward).
  • Stage 4 Apply additional 1000 kN prestress after 10 days of concreting in Stage 3 and cast next l/5 th spans (11). Deflection at mid span of the girder in this stage is 121.7mm (downward).
  • Stage 5 Apply additional 1000 kN prestress after 10 days of concreting in Stage 4 and cast central l/5 th span (11). Deflection at mid span of the girder in this stage is 7.6 mm (downward).
  • Stage 6 Prestress by additional 3100 kN force after 28 days of applying SIDL on the deck (11). Deflection at mid span of the girder in this stage is 75.5mm (upward).
  • FIG.11 Another typical 50m span and 2.5m deep composite prestressed 2-lane open web steel girder bridge is designed (Fig.11).
  • the top chord consists of 300mm x 300mm x 16mm box section, the bottom chord is 300mm x 450mm x 22mm box section, and the web members have the width of 300mm, thickness of 16mm and depth of 250mm.
  • deck slab can be designed on no-crack basis, which is highly desirable for the composite deck.
  • the typical examples of 125m span, 9m deep and 50m span 2.5m deep, 2- lane highway superstructure girders are optimized to result in steel off take of 331.0 t and 88.5t, respectively.
  • the maximum deflections due to live load at mid span are 151.3 mm and 57.6mm respectively for the 125m and 50m spans which are within the permissible deflection of Span/800.
  • the axial member stresses during erection and concreting of the deck are checked with prestressing applied at different stages as per design to be safe.
  • the limiting live load for elastic condition is found to be 3.2 times the SLS live load for the 125m span, and 2.8 times for the 50m span, confirming their robustness.
  • steel off takes are 310 t and 299 t, and corresponding live load deflections are 135.5 mm and 140.1mm, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

Les tabliers composites augmentent la résistance et la rigidité des ponts. La poutre à âme ouverte en acier composite précontrainte présente l'avantage supplémentaire de supporter des câbles de haute résistance. Des résultats de ponts typiques d'une travée de 125 m présentant des hauteurs de 9,0 m, 10,0 m et 12,5 m, ainsi que d'une autre travée de 50,0 m et une hauteur de 2,5 m sont donnés. Les contraintes sur les éléments et les déflexions du pont pendant l'érection restent sûres. La consommation moyenne d'acier pour le pont de 125 m est de 2,65 t/m et pour le pont de 50 m de travée, elle est de 1,77 t/m pour limiter la déflexion de la charge utile de travée/800. Sa résistance de réserve est de 3,2 fois la charge utile en condition de service. Les poutres sont fabriquées en atelier par panneaux, assemblées au niveau du site, hissées ou soulevées par grue pour être fixées sur les paliers. La liaison des éléments transversaux et le coulage sur place du tablier en pièces détachées avec précontrainte de la membrure inférieure par étapes sont réalisés. Des ponts à courte et longue travée pour une ou plusieurs voies dans des projets routiers, ferroviaires, de métro et de liaison côtière sont réalisables.
PCT/IN2022/050200 2021-09-24 2022-03-06 Tablier composite en rcc et superstructure de pont à poutres à âme ouverte en acier à membrure inférieure parabolique précontrainte et suspendue WO2023047408A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
MX2024003543A MX2024003543A (es) 2021-09-24 2022-03-06 Cubierta de rcc compuesto y superestructura de puente de viga de acero de alma abierta con cordon inferior parabolico pretensado.
AU2022351932A AU2022351932A1 (en) 2021-09-24 2022-03-06 Composite rcc deck and prestressed parabolic bottom chord underslung open web steel girder bridge superstructure
KR1020247012107A KR20240060816A (ko) 2021-09-24 2022-03-06 복합 rcc 데크 및 압축 응력된 포물선형 바닥 현재 언더슬렁 개방형 웹 스틸 교량 상부구조
CN202280009434.0A CN116802359A (zh) 2021-09-24 2022-03-06 复合rcc桥面和预应力抛物线形底弦杆下悬式空腹钢梁桥梁上部结构
US18/271,410 US20240060253A1 (en) 2021-09-24 2022-03-06 Composite rcc deck and prestressed parabolic bottom chord underslung open web steel girder bridge superstructure
IL311634A IL311634A (en) 2021-09-24 2022-03-06 A bridge superstructure consisting of a reinforced cement concrete (RCC) deck and a reinforced parabolic lower stringer supported by an open network of steel girders
JP2023541533A JP2024507436A (ja) 2021-09-24 2022-03-06 合成ｒｃｃ床版およびプレストレスト放物線下弦つり下げ式オープンウェブ鋼桁橋梁上部構造
CA3205909A CA3205909A1 (fr) 2021-09-24 2022-03-06 Tablier composite en rcc et superstructure de pont a poutres a ame ouverte en acier a membrure inferieure parabolique precontrainte et suspendue
US18/238,383 US20240271375A1 (en) 2021-09-24 2023-08-25 Composite rcc deck and prestressed parabolic bottom chord underslung open web steel girder bridge superstructure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202111043274 2021-09-24
IN202111043274 2021-09-24

Publications (1)

Publication Number Publication Date
WO2023047408A1 true WO2023047408A1 (fr) 2023-03-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2022/050200 WO2023047408A1 (fr) 2021-09-24 2022-03-06 Tablier composite en rcc et superstructure de pont à poutres à âme ouverte en acier à membrure inférieure parabolique précontrainte et suspendue

Country Status (9)

Country Link
US (2) US20240060253A1 (fr)
JP (1) JP2024507436A (fr)
KR (1) KR20240060816A (fr)
CN (1) CN116802359A (fr)
AU (1) AU2022351932A1 (fr)
CA (1) CA3205909A1 (fr)
IL (1) IL311634A (fr)
MX (1) MX2024003543A (fr)
WO (1) WO2023047408A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116657514A (zh) * 2023-07-18 2023-08-29 中国长江三峡集团有限公司 大跨度钢管砼拱桥吊杆更换监测方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3331202B2 (ja) * 1999-12-28 2002-10-07 住友建設株式会社 トラス構造橋の構築方法
CN102518034B (zh) * 2011-11-11 2013-11-20 浙江大学 双向预弯多梁式钢梁与混凝土桥面板组合的小箱梁桥结构
CN105064196A (zh) * 2015-07-29 2015-11-18 广西交通科学研究院 预制拼装的鱼腹工字型预应力钢混组合简支梁桥及其施工方法
CN110777643A (zh) * 2019-11-14 2020-02-11 中铁武汉勘察设计研究院有限公司 一种大跨度钢桁组合连续梁结构及其施工方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3331202B2 (ja) * 1999-12-28 2002-10-07 住友建設株式会社 トラス構造橋の構築方法
CN102518034B (zh) * 2011-11-11 2013-11-20 浙江大学 双向预弯多梁式钢梁与混凝土桥面板组合的小箱梁桥结构
CN105064196A (zh) * 2015-07-29 2015-11-18 广西交通科学研究院 预制拼装的鱼腹工字型预应力钢混组合简支梁桥及其施工方法
CN110777643A (zh) * 2019-11-14 2020-02-11 中铁武汉勘察设计研究院有限公司 一种大跨度钢桁组合连续梁结构及其施工方法

Also Published As

Publication number Publication date
JP2024507436A (ja) 2024-02-20
CN116802359A (zh) 2023-09-22
MX2024003543A (es) 2024-06-05
KR20240060816A (ko) 2024-05-08
IL311634A (en) 2024-05-01
US20240060253A1 (en) 2024-02-22
AU2022351932A1 (en) 2023-08-10
CA3205909A1 (fr) 2023-03-30
US20240271375A1 (en) 2024-08-15

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