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WO2018103767A1 - Bridge structure for road bridges - Google Patents

Bridge structure for road bridges Download PDF

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Publication number
WO2018103767A1
WO2018103767A1 PCT/CZ2017/000074 CZ2017000074W WO2018103767A1 WO 2018103767 A1 WO2018103767 A1 WO 2018103767A1 CZ 2017000074 W CZ2017000074 W CZ 2017000074W WO 2018103767 A1 WO2018103767 A1 WO 2018103767A1
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WO
WIPO (PCT)
Prior art keywords
parts
section
full cross
cross
trapezoidal shape
Prior art date
Application number
PCT/CZ2017/000074
Other languages
French (fr)
Inventor
Jiři POKORNÝ
Original Assignee
Univerzita Pardubice
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
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Publication of WO2018103767A1 publication Critical patent/WO2018103767A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/22—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members built-up by elements jointed in line
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • 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
    • E01D2101/28—Concrete reinforced prestressed

Definitions

  • the present invention applies to a bridge structure for road bridges including a beam composed of two types of concrete parts laid alternatively with p re-stressing rods placed in a cable in their centre allowing for continuous changes of the p re- stressing force according to the external load intensity.
  • the beam may also be adapted to the needed width.
  • the to-date shapes of the prefabricates were required to be arranged without hollows where water might accumulate.
  • the pre-stressed reinforcement was usually laid in cable channels in parabolic routes for the pre-stressing force to act against external loads.
  • the ends of the beams were provided with anchors, ideally in even distribution along the beam height for the pre-stressing to be effected and to assure action of the summary forces of the cable as close as possible to the cross section centre of gravity for the reason of even distribution of the pressure from the individual cables across the cross-section.
  • a bridge structure including a beam for road bridge construction according to the present invention, consisting of at least one row of nine parts in the row, including five parts of full cross section and trapezoidal shape extending downwards and four parts of lightened cross section forming a bottom-open trapezoidal frame also extending downwards.
  • This beam is symmetrical around its centre with the individual parts arranged symmetrically from the centre towards the sides.
  • the beam includes one end piece on each end in the length of 1.5 m; followed in the direction towards the centre with one open trapezoidal part with the bottom opening in the length of 5.88 m, and then a full cross section trapezoid in the length of 0.5 m and finally an open trapezoidal frame again, bottom open, in the length of 5.88 m.
  • the centre of the beam is made of one full cross section trapezoid in the length of 0.5 m.
  • the full cross section parts in the length of 0.5 m perform the role of a deviator (brace) in the beam.
  • AH parts of the beam are provided with a lengthwise edge on the outside along both side walls forming an at least 0.3 m projection at their bottom.
  • All beam part heights are identical, maximum 1.10 m, and their total width is 1.44 m.
  • the lengthwise projection on the beam part sides can be used for changes of the beam height within a certain range, depending on the projection height.
  • the form adaptation within the help of the fill can result in reduced height of the beam.
  • the opening in the centre of the full-cross-section parts is used for laying a cable comprising rods additionally p re-stressed in the full-cross-section parts with cohesion and loose in the open frame parts, where they are provided with anti- corrosion surface protection.
  • Both end parts of the full cross section are provided with anchors where the pre-stressed rods of the cable pass through.
  • the pre-stressing may be performed either on one or on both ends of the beam.
  • the end parts of the beam rest in the bridge supports.
  • the full part of the beam in the length of 1.5 m better transfers shear stresses increasing in the direction towards the supports.
  • the sidewise beam assembly creates the cross-section of the bridge load- bearing structure in the width required by the respective road type. All rows of the beam are connected by crosswise pre-stressing on the end parts.
  • this invention suggests two variants of the crosswise joining of the beams in their end pieces.
  • the end parts of the full cross section are provided with a steel strip below the projection in the same height across the part width for fixation of the connecting steel sheets across the beam width with each sheet covering the connection of two neighbouring parts of the beam. This assures crosswise connection of the neighbouring beam rows.
  • the openings in the neighbouring full-cross-section parts under the projection may also be used for laying a steel pipe across the hole width.
  • the lengthwise projections of the full cross section beam parts catch crosswise forces of crosswise pre-stressing.
  • the beam parts are made of plain or high-standard concrete, provided in inside structural concrete reinforcement along the wall inside, usually of material 10425 or 10505.
  • the structural concrete reinforcement is placed along the beam length according to the construction principles defined by the Euro Code and extended according to the calculation if needed.
  • the main load-bearing element of the reinforcement is represented by high-strength ropes Lp 15.8 mm, normal or annealed or stabilised and passing lengthwise through all beam parts in the needed numbers found by load-bearing capacity and applicability calculations.
  • the number of the ropes and their placement along the beam length may be changed with regard to the external load intensity.
  • the anchors placed on the end parts of the beams (beam faces) are passed though with pre-stressed ropes in the numbers specified by the calculation.
  • the pre-stressing force acting against the external load may be adapted according to the beam stress calculation.
  • the beam surface is covered with a reinforced concrete coupled joint-less slab, 0.25 m thick, reinforced with lengthwise ribs surrounding the beam on the sides or filling the space between the beams where there are more of them sidewise.
  • This increases the overall stiffness of the bridge structure.
  • the designed beam shows a compact frame-like shape with adjustable width. Another advantage is the option of operative adjustment of the pre-stressing force according to the external load intensity, or simple implementation of the structure as fully pre-stressed, partly pre-stressed or as pre-stressed reinforced concrete.
  • Fig. 1 Schematic drawing of prior art beams: a) KA-beam b) I-beam
  • Fig. 2 Schematic drawing of prior art beams: a) MKT-beam b) VST!-beam c)
  • Fig. 3 Lengthwise section of the beam with arrangement of the two part types with passing cable and the cable anchoring.
  • Fig. 4 Crosswise section A-A according to Fig. 3 through the end part of the beam with full cross section of trapezoidal shape, an opening for lengthwise cable laying, an anchor and a hole for the steel pipe placement across the part width.
  • Fig. 5 Crosswise section ⁇ - ⁇ according to Fig. 3 through the open-frame beam part in trapezoidal shape with loose cable position marking.
  • Fig. 6 Crosswise section C-C according to Fig. 3 through the full cross section beam part of trapezoidal shape performing the role of a deviator and with marked opening of the lengthwise cable laying.
  • Fig. 7 Lengthwise section of the end part of the beam with full cross section with a hole for the pipe laying and marked rope position and support location.
  • Fig. 8 Crosswise section of the end parts of the full cross section for road S1 1 , 5/80 consisting of nine beams, a pedestrian space and a reflective strip with marked crosswise connections of the neighbouring beam parts with anchored strip steel and welded connecting sheets.
  • Fig. 9 Crosswise section of the end parts of the full cross section for road S11 , 5/80 consisting of nine beams, a pedestrian space and a reflective strip with marked pipe location for crosswise pre-stressing.
  • Fig. 10 Crosswise section of the lightened beam parts for road S11 , 5/80 consisting of nine beams with a reinforced concrete slab, a pedestrian space and a reflective strip.
  • the load-bearing structure of a bridge for road S11.5 /80 providing a pedestrian space on the right side 16 and a lengthwise reflective strip on the left side 17 (Fig. 8, 0) consists of nine beams i according to the present invention placed sidewise and provided with an interlocked reinforced concrete slab 14 with reinforcing ribs 15 filling the space between the beams JL
  • Each beam 1 consists of nine parts 2, 3, 4 arranged sidewise and consisting of five parts 2, 4 with full cross section and trapezoidal shape extending downwards and four parts 3 lightened and forming a bottom-open frame of trapezoidal shape extending downwards (Fig. 5).
  • the beam 1 is symmetrical around its centre where the individual part types 2, 3, 4 are arranged symmetrically from the centre to the sides.
  • the beam i comprises one end piece 4 (Fig. 4) on each end in the length of 1.5 m, followed on each end in the direction towards the centre with one open trapezoidal frame part, bottom-open 3 in the length of 5.88 m (Fig. 5), this part 3 being further followed with one trapezoidal full cross section part 2 in the length of 0.5 m (Fig.
  • the centre of the beam 1 comprises one part 2 with full cross section and trapezoidal shape in the length of 0.5 m. Parts 2 with the full cross section and lengthy 05 m are used in beam I as a deviator (brace). All parts 2, 3, 4 of beam 1 are provided with a lengthwise edge 5 forming a projection 0.3 m high along the bottom edge of both side walls on their outside. The lengthwise projections in beam 1 with the full cross section catch crosswise forces from the p re- stressing. All parts 2. 3, 4 of beam I are 1.00 m high and in total 1.44 m wide.
  • the opening 8 in the centre of parts 2 and 4 hides a cable laid lengthwise through all parts 2, 3 and 4
  • the cable consists of ten high-strength ropes 6, 7 type LP 15.8 mm, with additional pre-stressing and cohesion in parts 2 with the full cross section (6) and in parts 3 forming the open frame laid loose with surface protection against corrosion (7) (Fig. 3).
  • Both end parts 4 of the full cross section are provided with anchors 9, through which the pre-stressed ropes 6 of the cable pass.
  • the pre- stressing is performed on both ends of the beam ⁇ .
  • the end parts 4 of the full cross section are supported from the bottom with a strut 10 (Fig. 7).
  • the full end parts 4 of beam I in the length of 1.5 m between transfer the shear stress increasing in the direction towards the struts.
  • the assembled nine beams 1 sidewise were crosswise connected in their end pieces 4.
  • the end parts 4 of the full cross section are provided with a steel strip 11 below the projection in the same height across the part width.
  • the strip size is 200/300 and the length is 1.40 m.
  • the strips JM are part of the end pieces 4 of beam 1, laid in the beam 1 formwork before the beam concrete laying.
  • the assembled beams 1 are connected with steel sheets 12 size 150/30 mm and length 1.4 m welded to the strips 1_1 for each sheet 12 to cover a joint of two neighbouring parts 4 of beam 1. This assures crosswise connection of the neighbouring rows of beam 1
  • Beam 1 is provided with a reinforced concrete coupled slab 14 reinforced with lengthwise ribs 15 filling the space between parts 2, 3, 4 of the neighbouring rows of the beam ⁇ .
  • the crosswise pre-stressing is implemented with a steel pipe in the neighbouring end parts 4 of full cross-section in the area below the projection placed in a hole 13 along the beam 1 width (Fig. 9).
  • the pipe is laid in before the beam i concrete laying and its position and profile is identical in all beams 1.
  • crosswise pre-stressing reinforcement is passed through all pipes and the pre- stressing is implemented by anchors laid in concrete on the external dent of the edge beams 1 and a pres-stressing device.
  • the pre-stressing is implemented in the end parts 4 of beam i, and with it the beams 1 are not only connected but also pressed together by the acting pre-stressing force (crosswise pre-stressing).
  • This beam can be used in a wide range of applications with different crosswise arrangements for roads with pavements, with reflective strips, and for motorway bridges.
  • a certain reinforcement of the beam frame section and a suitable composition of the number of the beams for crosswise arrangement is expected to allow for development of a beam for railway bridge application.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention applies to a bridge structure for road bridges including a beam (1) composed of two types of concrete parts laid alternatively with pre-stressing rods placed in a cable in their centre allowing for continuous changes of the pre-stressing force according to the external load intensity. The bridge structure (1 ) for road bridges comprising a bridge beam consisting of at least one row of nine parts (2), (3), (4) arranged sidewise where the end parts (4) of full cross section are supported from the bottom with a strut (10) and both end parts (4) are provided with an anchor (9) with pre-stressed ropes (6) of a cable passing through across the full length of the beam (1).The bridge beam (1) consisting of at least one row of nine parts (2), (3), (4) arranged sidewise. The beam (1) comprises five parts (2) of full cross section in trapezoidal shape extending downwards and four parts (3) lightened in their cross section and forming a bottom-open frame of trapezoidal shape extending downwards, where the beam (1) is symmetrical around its centre with the individual part types (2), (3), (4) arranged symmetrically from the centre towards the sides.

Description

Bridge Structure for Road Bridges
Technical Field
The present invention applies to a bridge structure for road bridges including a beam composed of two types of concrete parts laid alternatively with p re-stressing rods placed in a cable in their centre allowing for continuous changes of the p re- stressing force according to the external load intensity. The beam may also be adapted to the needed width.
Prior Art
In the past bridges were constructed of beams KA 73 for the spans of 9, 12, 15 and 18 m and beams I 73 for the spans of 21 , 24, 27 and 30 m. This was true until 992, as long as the Type Documents prepared by Dopravoprojekt Bratislava applied. These beams were built in most of the bridges constructed in our country. Most of these prefabricates were "KA" or "I" shaped (Fig.1).
In about 1992 new types of the prefabricates began to be used and have been used until now. They are small-span beams, IMP, lengths 3, 6-9 m, reinforced concrete beams, Amos, with maximum length of 16 m, K-T beam length 15-32m (Fig. 2a) of cable concrete, VSTI beam length 9-35 m (Fig. 2b) of cable concrete and T-93 beams, intended to replace the original "KA" and T beams and similar to MK-T beams. For larger span bridges there are Petra beam lengths 24-30 m (Fig. 2c) which may experimentally be used for about 40 m span too. They are also beams made of cable concrete and consisting of parts which are on-site pre-stressed. All bridges assembled of these prefabricates are provided with a coupled reinforced concrete slab, usually 0.25 m thick, connecting the beams crosswise and distributing the load among them.
The to-date shapes of the prefabricates were required to be arranged without hollows where water might accumulate. The pre-stressed reinforcement was usually laid in cable channels in parabolic routes for the pre-stressing force to act against external loads. The pre-stressing effect adapted to the bend momentum progress and its calculation considered also the prop and wall thickness for the reason of crosswise forces resulting from the pre-stressing.
The ends of the beams were provided with anchors, ideally in even distribution along the beam height for the pre-stressing to be effected and to assure action of the summary forces of the cable as close as possible to the cross section centre of gravity for the reason of even distribution of the pressure from the individual cables across the cross-section.
The disadvantages of the beams were in that after the beam assembly the end crosswise members had to be concreted for better load distribution among the beams. This was a wet process of connection of the old concrete with the new concrete, which is inconvenient and relatively labour-intensive in the formwork and the concrete laying stages. These beams were hard to connect with the substructure into an integrated bridge with a construction without bearings with low maintenance demand. The forces in the pre-stressing cables had to correspond to the wall thickness. In most cases the builders used more cables with lower pre-stressing force per cable, which required more anchoring material.
Invention Essence
The above mentioned drawbacks are resolved by a bridge structure including a beam for road bridge construction according to the present invention, consisting of at least one row of nine parts in the row, including five parts of full cross section and trapezoidal shape extending downwards and four parts of lightened cross section forming a bottom-open trapezoidal frame also extending downwards. This beam is symmetrical around its centre with the individual parts arranged symmetrically from the centre towards the sides. The beam includes one end piece on each end in the length of 1.5 m; followed in the direction towards the centre with one open trapezoidal part with the bottom opening in the length of 5.88 m, and then a full cross section trapezoid in the length of 0.5 m and finally an open trapezoidal frame again, bottom open, in the length of 5.88 m. The centre of the beam is made of one full cross section trapezoid in the length of 0.5 m. The full cross section parts in the length of 0.5 m perform the role of a deviator (brace) in the beam. AH parts of the beam are provided with a lengthwise edge on the outside along both side walls forming an at least 0.3 m projection at their bottom. All beam part heights are identical, maximum 1.10 m, and their total width is 1.44 m. the lengthwise projection on the beam part sides can be used for changes of the beam height within a certain range, depending on the projection height. The form adaptation within the help of the fill can result in reduced height of the beam.
The opening in the centre of the full-cross-section parts is used for laying a cable comprising rods additionally p re-stressed in the full-cross-section parts with cohesion and loose in the open frame parts, where they are provided with anti- corrosion surface protection. Both end parts of the full cross section are provided with anchors where the pre-stressed rods of the cable pass through. The pre-stressing may be performed either on one or on both ends of the beam. The end parts of the beam rest in the bridge supports. The full part of the beam in the length of 1.5 m better transfers shear stresses increasing in the direction towards the supports.
The sidewise beam assembly creates the cross-section of the bridge load- bearing structure in the width required by the respective road type. All rows of the beam are connected by crosswise pre-stressing on the end parts. Instead of the so- far laid reinforced concrete end cross pieces this invention suggests two variants of the crosswise joining of the beams in their end pieces. The end parts of the full cross section are provided with a steel strip below the projection in the same height across the part width for fixation of the connecting steel sheets across the beam width with each sheet covering the connection of two neighbouring parts of the beam. This assures crosswise connection of the neighbouring beam rows. The openings in the neighbouring full-cross-section parts under the projection may also be used for laying a steel pipe across the hole width. The lengthwise projections of the full cross section beam parts catch crosswise forces of crosswise pre-stressing.
The beam parts are made of plain or high-standard concrete, provided in inside structural concrete reinforcement along the wall inside, usually of material 10425 or 10505.
The structural concrete reinforcement is placed along the beam length according to the construction principles defined by the Euro Code and extended according to the calculation if needed. The main load-bearing element of the reinforcement is represented by high-strength ropes Lp 15.8 mm, normal or annealed or stabilised and passing lengthwise through all beam parts in the needed numbers found by load-bearing capacity and applicability calculations. The number of the ropes and their placement along the beam length may be changed with regard to the external load intensity. The anchors placed on the end parts of the beams (beam faces) are passed though with pre-stressed ropes in the numbers specified by the calculation. The pre-stressing force acting against the external load may be adapted according to the beam stress calculation.
After the beam assembly to the supports the beam surface is covered with a reinforced concrete coupled joint-less slab, 0.25 m thick, reinforced with lengthwise ribs surrounding the beam on the sides or filling the space between the beams where there are more of them sidewise. This increases the overall stiffness of the bridge structure. The designed beam shows a compact frame-like shape with adjustable width. Another advantage is the option of operative adjustment of the pre-stressing force according to the external load intensity, or simple implementation of the structure as fully pre-stressed, partly pre-stressed or as pre-stressed reinforced concrete.
Drawing Description
Fig. 1 : Schematic drawing of prior art beams: a) KA-beam b) I-beam
Fig. 2: Schematic drawing of prior art beams: a) MKT-beam b) VST!-beam c)
PETRA-beam
Fig. 3: Lengthwise section of the beam with arrangement of the two part types with passing cable and the cable anchoring.
Fig. 4: Crosswise section A-A according to Fig. 3 through the end part of the beam with full cross section of trapezoidal shape, an opening for lengthwise cable laying, an anchor and a hole for the steel pipe placement across the part width.
Fig. 5: Crosswise section Β-Ε according to Fig. 3 through the open-frame beam part in trapezoidal shape with loose cable position marking.
Fig. 6: Crosswise section C-C according to Fig. 3 through the full cross section beam part of trapezoidal shape performing the role of a deviator and with marked opening of the lengthwise cable laying.
Fig. 7: Lengthwise section of the end part of the beam with full cross section with a hole for the pipe laying and marked rope position and support location.
Fig. 8: Crosswise section of the end parts of the full cross section for road S1 1 , 5/80 consisting of nine beams, a pedestrian space and a reflective strip with marked crosswise connections of the neighbouring beam parts with anchored strip steel and welded connecting sheets.
Fig. 9: Crosswise section of the end parts of the full cross section for road S11 , 5/80 consisting of nine beams, a pedestrian space and a reflective strip with marked pipe location for crosswise pre-stressing.
Fig. 10: Crosswise section of the lightened beam parts for road S11 , 5/80 consisting of nine beams with a reinforced concrete slab, a pedestrian space and a reflective strip.
The invention is further described through embodiment examples, by no means limiting other embodiment options within the scope of the claims for patent protection. Examples of invention embodiments
Embodiment 1
The load-bearing structure of a bridge for road S11.5 /80, providing a pedestrian space on the right side 16 and a lengthwise reflective strip on the left side 17 (Fig. 8, 0) consists of nine beams i according to the present invention placed sidewise and provided with an interlocked reinforced concrete slab 14 with reinforcing ribs 15 filling the space between the beams JL
Each beam 1 consists of nine parts 2, 3, 4 arranged sidewise and consisting of five parts 2, 4 with full cross section and trapezoidal shape extending downwards and four parts 3 lightened and forming a bottom-open frame of trapezoidal shape extending downwards (Fig. 5). The beam 1 is symmetrical around its centre where the individual part types 2, 3, 4 are arranged symmetrically from the centre to the sides. The beam i comprises one end piece 4 (Fig. 4) on each end in the length of 1.5 m, followed on each end in the direction towards the centre with one open trapezoidal frame part, bottom-open 3 in the length of 5.88 m (Fig. 5), this part 3 being further followed with one trapezoidal full cross section part 2 in the length of 0.5 m (Fig. 6) and with another part 3 forming an open frame on the bottom in the length of 5:88 m and in trapezoidal shape. The centre of the beam 1 comprises one part 2 with full cross section and trapezoidal shape in the length of 0.5 m. Parts 2 with the full cross section and lengthy 05 m are used in beam I as a deviator (brace). All parts 2, 3, 4 of beam 1 are provided with a lengthwise edge 5 forming a projection 0.3 m high along the bottom edge of both side walls on their outside. The lengthwise projections in beam 1 with the full cross section catch crosswise forces from the p re- stressing. All parts 2. 3, 4 of beam I are 1.00 m high and in total 1.44 m wide. The opening 8 in the centre of parts 2 and 4 hides a cable laid lengthwise through all parts 2, 3 and 4 The cable consists of ten high-strength ropes 6, 7 type LP 15.8 mm, with additional pre-stressing and cohesion in parts 2 with the full cross section (6) and in parts 3 forming the open frame laid loose with surface protection against corrosion (7) (Fig. 3). Both end parts 4 of the full cross section are provided with anchors 9, through which the pre-stressed ropes 6 of the cable pass. The pre- stressing is performed on both ends of the beam ±. The end parts 4 of the full cross section are supported from the bottom with a strut 10 (Fig. 7). The full end parts 4 of beam I in the length of 1.5 m between transfer the shear stress increasing in the direction towards the struts.
The assembled nine beams 1 sidewise were crosswise connected in their end pieces 4. The end parts 4 of the full cross section are provided with a steel strip 11 below the projection in the same height across the part width. The strip size is 200/300 and the length is 1.40 m. The strips JM are part of the end pieces 4 of beam 1, laid in the beam 1 formwork before the beam concrete laying. The assembled beams 1 are connected with steel sheets 12 size 150/30 mm and length 1.4 m welded to the strips 1_1 for each sheet 12 to cover a joint of two neighbouring parts 4 of beam 1. This assures crosswise connection of the neighbouring rows of beam 1 Beam 1 is provided with a reinforced concrete coupled slab 14 reinforced with lengthwise ribs 15 filling the space between parts 2, 3, 4 of the neighbouring rows of the beam ±.
Embodiment 2
In beam i of bridge structure for road S11.5 /80 according to embodiment 1 the crosswise pre-stressing is implemented with a steel pipe in the neighbouring end parts 4 of full cross-section in the area below the projection placed in a hole 13 along the beam 1 width (Fig. 9). The pipe is laid in before the beam i concrete laying and its position and profile is identical in all beams 1. After assembly of beams 1 crosswise pre-stressing reinforcement is passed through all pipes and the pre- stressing is implemented by anchors laid in concrete on the external dent of the edge beams 1 and a pres-stressing device. The pre-stressing is implemented in the end parts 4 of beam i, and with it the beams 1 are not only connected but also pressed together by the acting pre-stressing force (crosswise pre-stressing). Industrial Applications
This beam can be used in a wide range of applications with different crosswise arrangements for roads with pavements, with reflective strips, and for motorway bridges. A certain reinforcement of the beam frame section and a suitable composition of the number of the beams for crosswise arrangement is expected to allow for development of a beam for railway bridge application.

Claims

1. The bridge structure (1) for road bridges comprising a. bridge beam consisting of at least one row of nine parts (2), (3), (4) arranged sidewise where the end parts (4) of full cross section are supported from the bottom with a strut (10) and both end parts (4) are provided with an anchor (9) with p re-stressed ropes (6) of a cable passing through across the full length of the beam (1), where the whole surface of the beam (1) is covered with a reinforced concrete coupled joint-less slab (14), characterised in that the beam (1) comprises five parts (2) of full cross section in trapezoidal shape extending downwards and four parts (3) lightened in their cross section and forming a bottom-open frame of trapezoidal shape extending downwards, where the beam (1) is symmetrical around its centre with the individual part types (2), (3), (4) arranged symmetrically from the centre towards the sides so that the end part (4) of full cross section in trapezoidal shape 1.5 m long on each end of the beam in followed in the direction from each end towards the centre with one part (3) forming the bottom-open trapezoidal frame in the length of 5.88 m on each side, further followed by one part (2) on each side of full cross section in trapezoidal shape and length 0.5 m and further by one part (3) forming the bottom-open trapezoidal frame in the length of 5.88 m, with the centre of the beam (1) formed by one part (2) of full cross section in trapezoidal shape and length 0.5 m; all parts (2), (3), (4) of the beam (1) are provided in the bottom section on the outside along both side walls with a lengthwise edge (5) forming a projection at least 0.3 m high and all parts (2), (3), (4) of the beam (1) are of identical height, max. 1.10 m, and overall width of 1.44 m, where an opening (8) in the central section of all parts (2) and (4) is used for laying a cable through all parts (2), (3) and (4) consisting of 5 to 12 ropes (6), (7), in parts (2) of full cross section forming additionally pre-stressed ropes (6) with cohesion and in parts (3) in the shape of an open frame in their cross section forming loose ropes (7), with anti-corrosion surface protection, where the beam (1) is covered with a reinforced concrete coupled joint-less slab (14) 0.25 m thick reinforced with lengthwise ribs (15) surrounding the beam (1) on both sides.
2. The bridge structure (1) according to claim 1 , characterised in that the beam comprises at least two rows of nine parts (2), (3), (4) arranged sidewise each, where the end parts (4) on both ends of full cross section and trapezoidal shape are provided below the projection across the full width of part (4) with a steel strip (11) to which steel sheets (12) are fixed so that each sheet (12) covers a joint of two neighbouring beams (1), or where the end parts (4) of full cross section and trapezoidal shape of all neighbouring beam (1) rows are provided with a hole (13) below the projection across the width of the beam (1) filled with a steel pipe and the lengthwise ribs (14) of the reinforced concrete coupled joint-less slab (14) fill the space between neighbouring beams (1),
3. The bridge structure (1) according to claims 1 and 2, characterised in that the parts (2),(3),(4) of beam (1) are made of plain or high-standard concrete and the wall perimeters of parts (2), (3), (4) are provided on the inside with construction concrete reinforcement.
4. The bridge beam (1) according to claims 1 to 3, characterised in that the ropes (6), (7) are of Lp 15.8 mm type, normal, annealed or stabilised.
List of identification figures
1 - bridge beam
2 - full cross section part
3 - lightened cross section part
4 - end part
5 - lengthwise edge
6 - additionaliy pre-stressed rope with cohesion
7 - loose rope
8 - rope opening
9 - anchor
10 - struts
11 - steel strip
12 - sheet sheets
13 - hole for steel pipe
14 - reinforced concrete slab
15 - reinforced concrete slab ribs
16 - pedestrian area
17 - reflective strip
PCT/CZ2017/000074 2016-12-08 2017-11-28 Bridge structure for road bridges WO2018103767A1 (en)

Applications Claiming Priority (2)

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CZPUV2016-33147 2016-12-08
CZ2016-33147U CZ30440U1 (en) 2016-12-08 2016-12-08 A bridge structure for bridging of roads

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Publication Number Publication Date
WO2018103767A1 true WO2018103767A1 (en) 2018-06-14

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CZ (2) CZ30440U1 (en)
WO (1) WO2018103767A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109972523A (en) * 2019-03-28 2019-07-05 中建路桥集团有限公司 A kind of road and bridge Precast T-Beam diaphragm plate reinforcement construction device
CN110438881A (en) * 2019-08-20 2019-11-12 中铁二院工程集团有限责任公司 The three branch mailbox mixing girders and four rope face combined highway and metro cable-stayed bridges worn in bridge tower
CN113512929A (en) * 2021-03-19 2021-10-19 宁波市政工程建设集团股份有限公司 Steel-concrete combined structural hidden cover beam structure system and construction method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109881575B (en) * 2019-04-18 2024-03-12 上海市城市建设设计研究总院（集团）有限公司 Pi-shaped cross section prefabricated bent cap adopting internal prestressed tendons and prefabricating method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139035A1 (en) * 1971-08-04 1973-02-15 8000 Muenchen BRIDGE STRUCTURE TO BE ASSEMBLED FROM PRE-FABRICATED CONCRETE COMPONENTS METHOD OF CONSTRUCTION OF A BRIDGE SUPPORT
DE2251487A1 (en) * 1972-10-20 1974-05-02 Dyckerhoff & Widmann Ag SINGLE OR MULTIPLE SPANED BRIDGE STRUCTURE MADE OF PRECAST CONCRETE BEAM
DE2520105A1 (en) * 1975-05-06 1976-11-18 Richard Dipl Ing Laumer Composite construction interrupted reinforced concrete slab - has parts linked by girders with cutouts or latticed
DE2647839A1 (en) * 1976-10-22 1978-04-27 Stog Arnulf Ing Grad Sealing joint between building components - has plastics strip unit with bent fish-plates on inner side and on shanks and open ends
US4631772A (en) * 1983-12-28 1986-12-30 Bonasso S G Tension arch structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB556572A (en) * 1942-03-03 1943-10-11 Paul William Abeles An improved manufacture of structures from reinforced materials
CH419534A (en) * 1965-02-02 1966-08-31 Impresa A Bellini & C S P A Beam with prefabricated elements in concrete and prestressed as a whole
US3561179A (en) * 1965-06-03 1971-02-09 James M Young Segmented concrete beam
US3481091A (en) * 1968-03-04 1969-12-02 Hueco Sa Floor beam construction utilizing post-stressed beams formed of an assembly of hollow elements
FI298973A7 (en) * 1973-09-25 1975-03-26 Nilcon Oy
DE3502390A1 (en) * 1984-05-11 1985-11-14 Helmut Dipl.-Ing. 5800 Hagen Klaas Lintel element or the like, in particular for facing masonry work
CZ2015619A3 (en) * 2015-09-11 2016-11-23 Hynek Siedek Prefabricated prestressed girder, intended especially for precise building

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139035A1 (en) * 1971-08-04 1973-02-15 8000 Muenchen BRIDGE STRUCTURE TO BE ASSEMBLED FROM PRE-FABRICATED CONCRETE COMPONENTS METHOD OF CONSTRUCTION OF A BRIDGE SUPPORT
DE2251487A1 (en) * 1972-10-20 1974-05-02 Dyckerhoff & Widmann Ag SINGLE OR MULTIPLE SPANED BRIDGE STRUCTURE MADE OF PRECAST CONCRETE BEAM
DE2520105A1 (en) * 1975-05-06 1976-11-18 Richard Dipl Ing Laumer Composite construction interrupted reinforced concrete slab - has parts linked by girders with cutouts or latticed
DE2647839A1 (en) * 1976-10-22 1978-04-27 Stog Arnulf Ing Grad Sealing joint between building components - has plastics strip unit with bent fish-plates on inner side and on shanks and open ends
US4631772A (en) * 1983-12-28 1986-12-30 Bonasso S G Tension arch structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109972523A (en) * 2019-03-28 2019-07-05 中建路桥集团有限公司 A kind of road and bridge Precast T-Beam diaphragm plate reinforcement construction device
CN109972523B (en) * 2019-03-28 2022-03-22 中建路桥集团有限公司 Prefabricated T roof beam diaphragm reinforcing bar construction equipment of road bridge
CN110438881A (en) * 2019-08-20 2019-11-12 中铁二院工程集团有限责任公司 The three branch mailbox mixing girders and four rope face combined highway and metro cable-stayed bridges worn in bridge tower
CN113512929A (en) * 2021-03-19 2021-10-19 宁波市政工程建设集团股份有限公司 Steel-concrete combined structural hidden cover beam structure system and construction method thereof

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