CN111335135B - Bridge device based on combination of concrete box girder and steel box girder and construction method - Google Patents

Bridge device based on combination of concrete box girder and steel box girder and construction method Download PDF

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Publication number
CN111335135B
CN111335135B CN202010206035.6A CN202010206035A CN111335135B CN 111335135 B CN111335135 B CN 111335135B CN 202010206035 A CN202010206035 A CN 202010206035A CN 111335135 B CN111335135 B CN 111335135B
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China
Prior art keywords
box girder
face
section
steel
diagonal
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CN202010206035.6A
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CN111335135A (en
Inventor
毕研美
陈振
赵波
杨朝
王国梁
杨学龙
张培会
曾凡峰
张凯
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Eighth Engineering Co Ltd of China Railway No 10 Engineering Group Co Ltd
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Eighth Engineering Co Ltd of China Railway No 10 Engineering Group Co Ltd
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Priority to CN202010206035.6A priority Critical patent/CN111335135B/en
Publication of CN111335135A publication Critical patent/CN111335135A/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
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • 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
    • 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
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • 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
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • 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
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • 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
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/14—Pile framings, i.e. piles assembled to form the substructure
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A bridge device based on a combination of a concrete box girder and a steel box girder and a construction method thereof are disclosed, and the bridge device comprises a bridge device body with the concrete box girder (6) and the steel box girder (7), and V-shaped piers (3) which are connected with the concrete box girder (6) or the steel box girder (7) and are provided with supporting diagonal strips distributed in a branching mode, wherein crossing of railway business lines is realized through the bridge device body, supporting of a divergence surface of the bridge device body is realized through the V-shaped piers (3), and one plane supporting is not performed through a pier, so that the bridge stability performance of crossing the railway business lines is improved.

Description

Bridge device based on combination of concrete box girder and steel box girder and construction method
Technical Field
The invention relates to a bridge device and a construction method, in particular to a bridge device and a construction method based on a concrete box girder and steel box girder combination.
Background
The general steel box girder is used as an overhead bridge, so that the overpass between an urban railway business line and an urban road is met, a bridge device and a construction method based on the combination of the concrete box girder and the steel box girder are important civil engineering components, and in the existing bridge device and construction method based on the combination of the concrete box girder and the steel box girder, a plane support is carried out through bridge piers, and the bridge stability performance of the bridge crossing the railway business line is affected because the bridge piers belong to a point support.
Disclosure of Invention
The invention discloses a bridge device based on the combination of a concrete box girder and a steel box girder,
The invention discloses a bridge construction method based on a combination of a concrete box girder and a steel box girder.
In order to overcome the technical defects, the invention aims to provide a bridge device based on a combination of a concrete box girder and a steel box girder and a construction method, so that the stability of the bridge crossing a railway business line is improved.
In order to achieve the above purpose, the invention adopts the following technical scheme: a bridge device based on a combination of a concrete box girder and a steel box girder comprises a bridge device body with the concrete box girder and the steel box girder, and V-shaped piers which are connected with the concrete box girder or the steel box girder and are provided with supporting diagonal strip parts distributed in a branching mode.
Because the bridge device body and the V-shaped piers are designed, the bridge device body is used for crossing the railway business line, the V-shaped piers are used for supporting the diverging surface of the bridge device body, and the bridge pier is not used for carrying out planar support, so that the stability of the bridge crossing the railway business line is improved.
The invention designs that the bridge device body and the V-shaped pier are mutually connected in a mode of forming a divergent surface support.
The invention designs a V-shaped pier which is connected with a bridge device body in a mode of forming a supporting edge with an equilateral triangle section.
The invention designs that the bridge device body also comprises piles, a bearing platform, a first end pier, a second end pier and a side pier.
The invention designs a bridge device which also comprises a first accessory device, wherein the first accessory device is arranged on the bridge device body and comprises a steel tower, a first stay cable group and a second stay cable group.
The invention designs that a concrete box girder is connected with a steel box girder, a V-shaped pier, a steel tower and a first end pier are respectively arranged on the concrete box girder, a bearing platform is arranged between a pile column and the V-shaped pier, a second end pier and a side pier are respectively arranged on the steel box girder, a second stay cable group is arranged between the concrete box girder and the steel tower, and a first stay cable group is arranged between the steel box girder and the steel tower.
The invention designs that the inner end of the concrete box girder is arranged to be in butt joint with the steel box girder, the lower end face part of the inner end of the concrete box girder is arranged to be in joint with the V-shaped pier, the upper end face part of the inner end of the concrete box girder is arranged to be in joint with the steel tower, the lower end face part of the outer end of the concrete box girder is arranged to be in joint with the first pier, and the inner side part of the outer end of the concrete box girder is arranged to be in joint with the second stay cable group.
The invention designs that the inner end of the steel box girder is arranged to be in butt joint with the concrete box girder, the upper end face of the steel box girder is arranged to be in joint with the first stay cable group, the lower end face of the outer end of the steel box girder is arranged to be in joint with the second end pier, and the lower end face of the inner side of the outer end of the steel box girder is arranged to be in joint with the side pier.
The invention designs that the pile is arranged into a round column body, the end face part of the upper end of the pile is connected with the bearing platform, the lower end of the pile is connected with the foundation in an implanted way, and the pile is arranged in a row and a column.
The invention designs that the V-shaped pier comprises a table part, a first diagonal strip part and a second diagonal strip part, wherein one side part of the upper end face of the table part is connected with the lower end face part of the first diagonal strip part, the other side part of the upper end face of the table part is connected with the lower end face part of the second diagonal strip part, an open upper groove body is arranged between the first diagonal strip part and the second diagonal strip part, the upper end face part of the first diagonal strip part and the upper end face part of the second diagonal strip part are respectively connected with a concrete box girder, the lower end face part of the table part is connected with a bearing platform, the table part, the first diagonal strip part and the second diagonal strip part are respectively arranged as strip bodies, and the contour line formed by the open upper groove body and the lower end face part of the concrete box girder is arranged as an equilateral triangle with an arc line at the corner part.
The invention designs that a steel tower is arranged to comprise a tower head, a first supporting claw and a second supporting claw, one side part of the lower end face of the tower head is arranged to be connected with the upper end face part of the first supporting claw, the other side part of the lower end face of the tower head is arranged to be connected with the upper end face part of the second supporting claw, an opening lower groove body is arranged between the first supporting claw and the second supporting claw, the lower end face part of the first supporting claw and the lower end face part of the second supporting claw are respectively arranged to be connected with a concrete box girder, the upper end face part of the tower head is respectively arranged to be connected with a first stay cable group and a second stay cable group, the tower head, the first supporting claw and the second supporting claw are respectively arranged to be in Y-shaped distribution, the contour line of the outer side surface formed by the tower head and the first supporting claw, the contour line of the outer side surface formed by the tower head and the second supporting claw are respectively arranged to be a part of a circular contour line, and the opening lower groove body and the contour line of the upper end face part of the concrete box girder are respectively arranged to be triangle-shaped.
The invention designs that the upper end of one of the first stay cables is connected with a steel tower, the lower end of one of the first stay cables is connected with a steel box girder, and one of the first stay cables is a steel wire rope.
The invention designs that the upper end of one of the second stay cables is connected with a steel tower, the lower end of one of the second stay cables is connected with a concrete box girder, and one of the second stay cables is a steel wire rope.
The invention designs that the first end pier and the second end pier are respectively provided with a supporting part and a column part, the lower end face part of the supporting part is connected with the upper end face part of the column part, the lower end head of the column part is connected with a foundation in an embedded way, the upper end face part of the transverse part of the supporting part of the first end pier is connected with a concrete box girder, the upper end face part of the transverse part of the supporting part of the second end pier is connected with a steel box girder, the supporting part is provided with L-shaped strip bodies with clamping plate bodies on the side surfaces of the vertical parts, the clamping plate bodies of the first end pier are connected with the side surfaces of the concrete box girder, the clamping plate bodies of the second end pier are connected with the side surfaces of the steel box girder, the column part is provided with round column bodies, and the column parts are arranged at intervals along the vertical center line of the supporting part.
The invention designs that the side pier comprises a beam part and a pile body part, wherein the lower end face part of the beam part is connected with the upper end face part of the pile body part, the lower end head of the pile body part is connected with a foundation in an embedded mode, the upper end face part of the beam part is connected with a steel box beam, the beam part is a T-shaped strip body, rib plates are arranged between the vertical part and the transverse part of the end head of the beam part, the rib plates are splayed sheet bodies, the pile body part is a round column body, and the pile body parts are arranged and distributed at intervals along the vertical central line of the beam part.
The invention designs a concrete box girder, a steel box girder, a first end pier, a second end pier, a side pier, a pile, a bearing platform, a V-shaped pier, a steel tower, a first stay cable group and a second stay cable group, wherein the first stay cable group and the second stay cable group are distributed in a manner of obliquely fixing the middle part, the first stay cable group is provided with at least twelve stay cables, the second stay cable group is provided with at least one stay cable, a first supporting claw part is distributed corresponding to the first stay strip part, a second supporting claw part is distributed corresponding to the second stay strip part, an opening lower groove body is distributed corresponding to an opening upper groove body, and the opening lower groove body is distributed up and down along the transverse central line of the concrete box girder.
The invention also comprises a temporary supporting beam and a cushion layer, wherein the upper end face part of the temporary supporting beam is connected with the lower end face part of the cushion layer, the lower end face part of the temporary supporting beam is connected with the upper end face part of the bearing platform, and the upper end face part of the cushion layer is respectively connected with the outer side face part of the first inclined strip part and the outer side face part of the second inclined strip part.
The invention designs that the temporary support beams are arranged as concrete trapezoid strips with built-in reinforcing steel meshes and are distributed at intervals along the vertical central line of the bearing platform, the width of the temporary support beams is 68-72cm, and the trapezoid inner angle alpha of the temporary support beams is 80-86 degrees.
The invention designs that the cushion layer is arranged as a coagulating body of high-strength grouting material, and the cushion layer is arranged between the temporary supporting beam and the first diagonal stripe part and between the temporary supporting beam and the second diagonal stripe part respectively.
The invention also comprises an anchor backing plate device, and the anchor backing plate device is arranged between the stay cables in the first stay cable group and the steel box girder.
The invention designs that the anchor backing plate device comprises a core section, a cap section, an outer cylinder shell, a lining shell, a backing plate, an anchor ring and a bearing plate, wherein the core section is arranged on a steel box girder, the outer cylinder shell and the lining shell are respectively arranged on the core section, the cap section is arranged between the outer cylinder shell and the lining shell, the backing plate is arranged on the cap section, the outer cylinder shell and the lining shell, the bearing plate is arranged on the backing plate, the anchor ring is arranged on the bearing plate, and the cap section, the backing plate, the anchor ring and the bearing plate are respectively connected with a suspension cable in the first suspension cable group.
The invention designs that the core section is a concrete solid column body, the outer side face of the core section is connected with the cap section, the upper end face of the core section is connected with the cap section and the lining shell respectively, the lower end face of the core section is connected with the steel box girder, and the center line of the core section is distributed at an acute angle with the transverse center line of the steel box girder.
The invention designs that the cap section is provided with a filling body, shear nails, steel strands and a rib plate, one end face part of the rib plate is arranged to be connected with the inner wall of an outer cylinder shell, the other end face part of the rib plate is arranged to be connected with the outer side face part of an inner liner shell, the outer ends of the shear nails are respectively arranged to be connected with the inner wall of the outer cylinder shell, the outer side face part of the inner liner shell and the side face part of the rib plate, the steel strands are arranged to be distributed at intervals along the periphery of the inner wall of the outer cylinder shell, the filling body is respectively arranged between the outer cylinder shell and the core section, the outer cylinder shell and the inner liner shell, the lower end face part of the filling body is arranged to be connected with a steel box girder, the upper end face part of the filling body is arranged to be connected with a base plate, the filling body is arranged to be connected with a stay cable containing in a first stay cable group, the filling body is arranged to be a concrete mortar condensation body, the shear nails are arranged to be T-shaped rod-shaped bodies, two adjacent shear nails are arranged to be distributed at intervals, and the rib plate is arranged to be rectangular sheet-shaped.
The invention designs that the outer cylinder shell is provided with a rectangular tubular body, the inner wall of the outer cylinder shell is connected with the cap section, the upper end port part of the outer cylinder shell is connected with the backing plate, and the lower end port part of the outer cylinder shell is connected with the steel box girder.
The invention designs that the inner lining shell is provided with a rectangular box-shaped body with a trapezoid bottom end surface, the outer side surface part of the inner lining shell is connected with the cap section, the upper end surface part of the inner lining shell is connected with the backing plate, and the lower end surface part of the inner lining shell is connected with the core section.
The invention designs that a through hole body is arranged in the middle part of a plate part 601 of the backing plate, an opening hole body is arranged in the plate part 601, an inner end part of the opening hole body is connected with a peripheral line of the through hole body, an inner end part of the opening hole body is connected with a peripheral line of the plate part 601, an outer side surface part of the plate part 601 is connected with an outer cylinder shell, an inner side surface part of the plate part 601 is connected with a lining shell, an upper end surface part of the plate part 601 is connected with a bearing plate, a lower end surface part of the plate part 601 is connected with a cap section, the through hole body is connected with a stay cable in a first stay cable group, the plate part 601 is arranged as a rectangular sheet body, the through hole body is arranged as a circular hole body, and the opening hole body is arranged as a strip hole body.
The invention designs that the bearing plate is a rectangular annular body with a leak-through circular hole, the outer side face of the bearing plate is connected with the outer cylinder shell, the inner side face of the bearing plate is connected with the inner lining shell, the upper end face of the bearing plate is connected with the anchor ring, the lower end face of the bearing plate is connected with the cap section and the base plate respectively, and the leak-through circular hole of the bearing plate is connected with the stay cables in the first stay cable group.
The invention designs that the anchor ring is arranged into a circular ring shape, the end face part of the lower end of the anchor ring is arranged to be connected with the bearing plate, and the anchor ring is arranged to be connected with the stay cables in the first stay cable group in a sleeved mode.
The invention designs that the lower end of a stay cable in a first stay cable group is connected with the upper end of a tension screw rod, the tension screw rod is connected with a steel box girder in a penetrating way, the lower end of the tension screw rod extends to the lower end face part of the steel box girder, a tension nut is connected with the tension screw rod in a threaded way, and the upper end face part of the tension nut is connected with the lower end face part of the steel box girder in a contact way.
The invention designs a bridge construction method based on a concrete box girder and steel box girder combination, which comprises the following steps:
Respectively driving piles into foundations positioned on one side of an urban railway business line, installing a bearing platform on the piles, carrying out concrete mortar pouring on the bearing platform to form a platform part, distributing and installing templates of a first diagonal strip part and templates of a second diagonal strip part on the end face part of the upper end of the platform part, carrying out concrete mortar pouring on a first section of the first diagonal strip part and a first section of the second diagonal strip part, and setting the ratio of the whole length of the first diagonal strip part to the length of the first section of the first diagonal strip part to be 1:0.58-0.67, the ratio of the overall length of the second diagonal stripe to the length of the first section of the second diagonal stripe is set to 1:0.58-0.67, after the first section of the first diagonal part and the first section of the second diagonal part are formed, removing the templates of the first diagonal part and the templates of the second diagonal part, respectively installing temporary supporting beams between the first section of the first diagonal part and the bearing platform and between the first section of the second diagonal part and the bearing platform, respectively injecting high-strength grouting materials between the first section of the first diagonal part and the temporary supporting beams and between the first section of the second diagonal part and the temporary supporting beams so as to form cushion layers, realizing the support of the first section of the first diagonal part and the first section of the second diagonal part, then installing the templates of the second section of the first diagonal part on the first section of the first diagonal part, installing the templates of the second section of the second diagonal part on the first section of the second diagonal part, and performing concrete casting on the second section of the first diagonal part and the second section of the second diagonal part so as to finish the forming of V-shaped piers,
Installing the skeleton of the core section on the steel box girder, installing the template of the core section on the skeleton, pouring concrete mortar on the core section, thereby completing the installation of the core section and the steel box girder,
Driving the column parts of the first end pier into the outer sides of the piles respectively, mounting the supporting parts of the first end pier on the column parts of the first end pier, thereby completing the mounting of the first end pier,
Pile bodies are respectively driven into foundations positioned on the other side face of the urban railway business line, liang Buan are arranged on the pile body parts, thereby completing the installation of the side piers,
The column parts of the second end piers are respectively driven into the outer sides of the pile body parts, the supporting parts of the second end piers are arranged on the column parts of the second end piers, thereby completing the installation of the second end piers,
One end of the concrete box girder is arranged on the supporting part of the first end pier, the clamping plate body of the first end pier is connected with the concrete box girder, the other end of the concrete box girder is arranged on the first supporting claw part and the second supporting claw part,
One end of the steel box girder is arranged on the supporting part of the second end pier, the clamping plate body of the second end pier is connected with the steel box girder, the other end of the steel box girder is in butt joint with the other end of the concrete box girder,
The first supporting claw part and the second supporting claw part are respectively installed with the concrete box girder, the first supporting claw part corresponds to the first inclined strip part, the second supporting claw part corresponds to the second inclined strip part, the open lower groove body corresponds to the open upper groove body, the steel tower is installed on the concrete box girder,
The upper end of the stay cable of the second stay cable group is connected with the tower head, the lower end of the stay cable of the second stay cable group is connected with the middle part of the concrete box girder,
The method comprises the steps of installing shear nails on an outer cylinder shell, a lining shell and a rib plate, installing rib plates on the outer cylinder shell and the lining shell, welding the lower ends of steel strands with a steel box girder, installing the outer cylinder shell and the lining shell on a core section, enabling stay cables of a first stay cable group to penetrate through anchor rings, bearing plates and through hole bodies, welding the lower ends of the stay cables of the first stay cable group with the upper ends of tensioning screws, connecting the upper ends of the stay cables of the first stay cable group with a tower head, tensioning the stay cables of the first stay cable group through rotation of tensioning nuts on the tensioning screws, placing the upper ends of the steel strands on the upper end opening parts of the outer cylinder shell and the lining shell, injecting concrete mortar into the gap between the outer cylinder shell and the lining shell, forming a filling body, thereby realizing connection of the filling body and the core section, welding the outer side faces of the bearing plates with the outer cylinder shell, welding the inner side faces of the bearing plates with the shell, filling the lower end faces of the bearing plates with the tower head, and connecting the upper ends of the bearing plates with the tower head, and completing connection of the stay cables of the first stay cable group with the steel box girder.
The invention has the technical effects that: the inclined cable bridge is a tower pier beam consolidation system, a V-shaped pier body, a prestressed concrete box beam and a main tower are anchored and connected into a whole, and the consolidation system is required to be integrally constructed at one time according to the 'guiding construction step' of a design drawing, but steel bars (three steel bars are arranged side by side) at the system are considered to be dense, the concrete mark is c60, construction is difficult, and concrete is difficult to fall; the construction method comprises the steps of constructing a V-shaped pier body and a prestressed concrete box girder in sequence by separating tower legs, so that the construction problem can be effectively solved, but the construction method changes an inverted triangle structure formed by the original V-shaped pier body and Liang Tixing into a V-shaped pier body which is a cantilever component at two ends, if the construction is incorrect, the middle of the V-shaped pier body can generate a tension fracture danger, the V-shaped pier body is formed by casting twice in the construction, in order to ensure that the pier body is correct in size and attractive in appearance, a shaping steel template is adopted in whole, the template is removed after the pier body is cured for 14d by concrete, a temporary support is constructed, the temporary support is a reinforced concrete component, C40 concrete is adopted, a phi 16 layer of steel mesh is internally arranged, the root support and a bearing platform are supported, the top is supported at the middle position of the V-shaped pier body, meanwhile, the shrinkage creep of the concrete is prevented, a space of 2cm is reserved at the joint of the temporary support top and the V-shaped pier body, a gap is filled by high-strength grouting material in the later stage, the steel main tower is divided into a front limb and a rear limb by 4 tower legs, 4 tower legs are respectively stretched, the tower legs are respectively, the two tower legs are obliquely combined with a mixed length of 12.74 m, and the lower end of the steel strand is inclined from the lower end of the steel strand is inclined and the lower than the lower end of the steel strand is full of the steel strand in the middle of the tower, and the 4 m is inclined and the length of the lower than the length of the steel strand is 4 m lower than the length of the lower than the steel strand; the steel strand penetrates into the main tower from the tower root, is laid in the partition along the periphery and penetrates out of the bearing plate, a round hole is reserved in the middle of a steel plate with the thickness of 5cm, a common cast iron anchor backing plate is required to be buried in concrete at the tensioning end of the steel strand in conventional construction, a grouting hole is reserved at one corner of the anchor backing plate, but in practice, the tower foot tensioning end is a steel bearing plate in a design drawing, the common anchor backing plate cannot be buried at the place at all, after tensioning, the anchor ring is tightly pressed with the bearing plate, no vent holes are formed in post grouting, the grouting cannot be performed in the corrugated pipe, during construction, the size of the 3cm steel square backing plate is slightly smaller than that of the bearing plate, a round hole is reserved in the middle of the backing plate, the size of the round hole is smaller than the diameter of the anchor ring, a 3cm wide through long hole is reserved at one side of the backing plate, and the grouting is injected into a hard pipe reserved at the root of the tower foot; when the steel strand is stretched, the anchor ring is tightly connected with the backing plate, the backing plate is tightly attached to the bearing plate, the three are integrated, and the anchor is sealed after tensioning is completed.
In this technical scheme, the V-shaped pier is a basic component, and is also an essential technical feature of the present invention, and the design of the technical features of the concrete box girder, the steel box girder, the pile, the bearing platform, the steel tower, the first stay cable group, the second stay cable group, the first end pier, the second end pier and the side pier, which are the functional components to achieve other technical effects of the present invention, such as the table portion, the first diagonal stripe portion, the second diagonal stripe portion, the open upper groove body, the tower head portion, the first supporting claw portion, the second supporting claw portion, the open lower groove body, the clamping plate body, the supporting portion, the column portion, the rib plate, the beam portion, the pile body portion, the temporary supporting beam, the cushion layer, the core section, the cap section, the outer cylinder shell, the inner liner shell, the cushion plate, the anchor ring and the bearing plate, the filling body, the shear pin, the steel strand, the rib plate clamping plate, the plate portion 601, the through hole body and the open hole body, is a technical feature according to the patent law and implementation rules.
In the technical scheme, the bridge device body and the V-shaped pier which form the divergent surface support are important technical characteristics, and the bridge device body and the V-shaped pier have novelty, creativity and practicability in the technical field of bridge devices and construction methods based on the combination of the concrete box girder and the steel box girder, and the terms in the technical scheme can be explained and understood by the patent literature in the technical field.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Figure 1 is a schematic view of one of the first embodiments of the present invention,
Figure 2 is a schematic diagram of a second embodiment of the present invention,
Figure 3 is a schematic view of a third embodiment of the present invention,
Figure 4 is a schematic view showing the connection relationship of the cap section 30, the outer cylinder shell 40, the inner liner shell 50, the backing plate 60, the anchor ring 70 and the bearing plate 801 of the present invention,
Figure 5 is a schematic view of the structure of a shim plate 60 of the present invention,
The concrete box girder-6, the steel box girder-7, the pile column-1, the bearing platform-2, the V-shaped pier-3, the steel tower-4, the first stay cable group-5, the second stay cable group-90, the first end pier-8, the second end pier-9, the side pier-91, the bench part-31, the first diagonal stripe part-32, the second diagonal stripe part-34, the open upper groove body-34, the tower head part-41, the first supporting claw part-42, the second supporting claw part-43, the open lower groove body-44, the clamping plate body-80, the supporting part-81, the column part-82,
The steel strand pile comprises the following components of rib plate-910, beam-911, pile body-912, temporary supporting beam-101, cushion layer-102, core segment-20, cap segment-30, outer cylinder shell-40, inner liner shell-50, backing plate-60, anchor ring-70, bearing plate-801, filler-301, shear pin-302, steel strand-303, rib plate-304, plate-601, through hole body-602 and open hole body-603.
Detailed Description
Terms such as "having," "including," and "comprising," as used herein, are to be construed as not being accompanied by the presence or addition of one or more other elements or combinations thereof, in accordance with the censoring guidelines.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the various embodiments of the invention described below may be combined with one another as long as they do not interfere with one another, and, unless otherwise specified, the equipment and materials used in the examples below are commercially available, as the process conditions are not explicitly described, with reference to the commercially available product specifications or in accordance with methods conventional in the art.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic diagram of one of first embodiments of the present invention, and specifically illustrates the present embodiment with reference to the accompanying drawings, and the bridge device includes a concrete box girder 6, a steel box girder 7, a pile 1, a bearing platform 2, a V-shaped pier 3, a steel tower 4, a first stay cable group 5, a second stay cable group 90, a first end pier 8, a second end pier 9 and a side pier 91, wherein the concrete box girder 6 is configured to be connected with the steel box girder 7, the V-shaped pier 3, the steel tower 4 and the first end pier 8 are respectively disposed on the concrete box girder 6, a bearing platform 2 is disposed between the pile 1 and the V-shaped pier 3, the second end pier 9 and the side pier 91 are respectively disposed on the steel box girder 7, and the second stay cable group 90 is disposed between the concrete box girder 6 and the steel tower 4, and the first stay cable group 5 is disposed between the steel box girder 7 and the steel tower 4.
In the present embodiment, the inner end of the concrete box girder 6 is provided to be butt-jointed with the steel box girder 7 and the lower end face portion of the inner end of the concrete box girder 6 is provided to be jointed with the V-shaped pier 3, the upper end face portion of the inner end of the concrete box girder 6 is provided to be jointed with the steel tower 4 and the lower end face portion of the outer end of the concrete box girder 6 is provided to be jointed with the first pier 8, and the inner side portion of the outer end of the concrete box girder 6 is provided to be jointed with the second stay cable group 90.
Through concrete box girder 6, formed the support tie point to V-arrangement mound 3, steel tower 4, steel box girder 7, second suspension cable group 90 and first end mound 8, by concrete box girder 6, realized being connected with V-arrangement mound 3, realized being connected with steel tower 4, realized being connected with steel box girder 7, realized being connected with second suspension cable group 90, realized being connected with first end mound 8, its technical aim at: for use as an extension beam body for a steel box girder 7.
In the present embodiment, the inner end of the steel box girder 7 is provided to be butt-jointed with the concrete box girder 6 and the upper end face portion of the steel box girder 7 is provided to be jointed with the first stay cable group 5, the lower end face portion of the outer end of the steel box girder 7 is provided to be jointed with the second end pier 9 and the lower end face portion of the inner side of the outer end of the steel box girder 7 is provided to be jointed with the side pier 91.
Through steel case roof beam 7, formed the support tie point to first suspension cable group 5, concrete case roof beam 6, second end mound 9 and side mound 91, realized being connected with first suspension cable group 5 by steel case roof beam 7, realized being connected with concrete case roof beam 6, realized being connected with second end mound 9, realized being connected with side mound 91, its technical aim is: an overhead girder body for crossing railway business lines.
In the present embodiment, the piles 1 are provided as circular columns and the upper end face portions of the piles 1 are provided to be coupled with the bearing table 2, the lower ends of the piles 1 are provided to be coupled with the foundation in an implanted manner and the piles 1 are provided to be distributed in rows and columns.
Through stake 1, formed the support tie point to cushion cap 2, realized by stake 1 with cushion cap 2's connection, its technical aim is: for use as a support carrier for the table 2.
In the present embodiment, the V-shaped pier 3 is provided to include the stage 31, the first diagonal portion 32 and the second diagonal portion 33 and one side portion of the upper end face of the stage 31 is provided to be coupled with the lower end face portion of the first diagonal portion 32, the other side portion of the upper end face of the stage 31 is provided to be coupled with the lower end face portion of the second diagonal portion 33 and the open upper groove 34 is provided between the first diagonal portion 32 and the second diagonal portion 33, the upper end face portions of the first diagonal portion 32 and the second diagonal portion 33 are respectively provided to be coupled with the concrete box girder 6 and the lower end face portion of the stage 31 is provided to be coupled with the cap 2, and the contour lines formed by the stage 31, the first diagonal portion 32 and the second diagonal portion 33 are respectively provided to be bars and the open upper groove 34 and the lower end face portion of the concrete box girder 6 are provided to be equilateral triangles having arcs at corners.
Through V-arrangement mound 3, formed the support tie point to cushion cap 2 and concrete box girder 6, realized being connected with cushion cap 2 by table portion 31, realized being connected with concrete box girder 6 by first diagonal stripe portion 32 and second diagonal stripe portion 33, realized releasing the distortion effort between concrete box girder 6 and first diagonal stripe portion 32 and the second diagonal stripe portion 33 by opening upper groove body 34, its technical purpose lies in: for use as a support carrier for the concrete box girder 6.
In the present embodiment, the steel tower 4 is provided to include the tower head 41, the first supporting claw 42 and the second supporting claw 43, and one side portion of the lower end face of the tower head 41 is provided to be coupled with the upper end face portion of the first supporting claw 42, the other side portion of the lower end face of the tower head 41 is provided to be coupled with the upper end face portion of the second supporting claw 43, and an open lower groove 44 is provided between the first supporting claw 42 and the second supporting claw 43, the lower end face portion of the first supporting claw 42 and the lower end face portion of the second supporting claw 43 are provided to be coupled with the concrete box girder 6, and the upper end face portion of the tower head 41 is provided to be coupled with the first stay cable group 5 and the second stay cable group 90, respectively, the tower head 41, the first supporting claw 42 and the second supporting claw 43 are provided to be in a bar shape, and the tower head 41 and the first supporting claw 42 and the second supporting claw 43 are provided to be distributed in a Y shape, and an outline of an outer side face formed by the tower head 41 and the second supporting claw 43 are provided to be an outline of an outer peripheral side, respectively, and an outline of the lower peripheral side face formed by the tower head 41 and the second supporting claw 43 are provided to be an outline of the open lower end face, and an outline of the upper end face is provided to be an outline, an angle, and an outline of the upper end face is formed by the upper end face, and an outline, and an end face of an end-formed.
Through steel tower 4, formed the support tie point to first suspension cable group 5, second suspension cable group 90 and concrete box girder 6, by tower head 41, realized being connected with first suspension cable group 5, realized being connected with second suspension cable group 90, realized being connected with concrete box girder 6 by first supporting claw 42 and second supporting claw 43, by opening lower cell body 44, realized releasing the distortion effort between concrete box girder 6 and first supporting claw 42 and the second supporting claw 43, its technical aim is: for use as a support carrier for the first set of stay cables 5 and the second set of stay cables 90.
In this embodiment, an upper end of one of the first stay cables of the first stay cable group 5 is provided to be coupled with the steel tower 4 and a lower end of one of the first stay cables of the first stay cable group 5 is provided to be coupled with the steel box girder 7, and one of the stay cables of the first stay cable group 5 is provided as a steel wire rope.
Through first suspension cable group 5, formed the support tie point to steel tower 4 and steel case roof beam 7, by first suspension cable group 5, realized being connected with steel tower 4, realized being connected with steel case roof beam 7, its technical aim at: for acting as a support carrier for the steel box girder 7.
In the present embodiment, an upper end of one of the second stay cables of the second stay cable group 90 is provided to be coupled with the steel tower 4 and a lower end of one of the second stay cables of the second stay cable group 90 is provided to be coupled with the concrete box girder 6, and one of the second stay cables of the second stay cable group 90 is provided as a wire rope.
Through second suspension cable group 90, formed the support tie point to steel tower 4 and concrete box girder 6, by second suspension cable group 90, realized being connected with steel tower 4, realized being connected with concrete box girder 6, its technical aim is: for use as a support carrier for the concrete box girder 6.
In the present embodiment, the first end pier 8 and the second end pier 9 are respectively provided to include the supporting portion 81 and the column portion 82 and the lower end face portion of the supporting portion 81 is provided to be coupled with the upper end face portion of the column portion 82, the lower end of the column portion 82 is provided to be coupled with the foundation implantation and the lateral upper end face portion of the supporting portion 81 of the first end pier 8 is provided to be coupled with the concrete box girder 6, the lateral upper end face portion of the supporting portion 81 of the second end pier 9 is provided to be coupled with the steel box girder 7 and the supporting portion 8 is provided to be an L-shaped strip having the clamping plate body 80 at the side of the vertical portion, the clamping plate body 80 of the first end pier 8 is provided to be coupled with the side portion of the concrete box girder 6 and the clamping plate body 80 of the second end pier 9 is provided to be coupled with the side portion of the steel box girder 7, the column portion 82 is provided to be circular columnar bodies and the column portions 82 are provided to be arranged at intervals along the vertical center line of the supporting portion 81.
Through first end mound 8 and second end mound 9, formed the support tie point to steel case roof beam 7 and concrete case roof beam 6, realized being connected with steel case roof beam 7 by the grip block body 80 and the portion of holding in the palm 81 of second end mound 9, realized being connected with concrete case roof beam 6 by the grip block body 80 and the portion of holding in the palm 81 of first end mound 8, realized being connected to portion of holding in the palm 81 by post 82, its technical aim is: for use as support carriers for concrete box girders 6 and steel box girders 7.
In the present embodiment, the side piers 91 are provided to include a beam portion 911 and a pile portion 912 and a lower end face portion of the beam portion 911 is provided to be coupled with an upper end face portion of the pile portion 912, a lower end of the pile portion 912 is provided to be coupled with a foundation implantation and an upper end face portion of the beam portion 911 is provided to be coupled with the steel box girder 7, the beam portion 911 is provided as a T-shaped strip and a rib plate 910 is provided between a vertical portion and a lateral portion of an end of the beam portion 911, the rib plate 910 is provided as a splayed sheet, the pile portion 912 is provided as a circular columnar body and the pile portion 912 is provided to be arranged at intervals along a vertical center line of the beam portion 911.
Through the side mound 91, formed the support tie point to steel case roof beam 7, realized being connected with steel case roof beam 7 by beam portion 911, realized the enhancement processing to beam portion 911 by rib plate 910, realized being connected to beam portion 911 by pile body portion 912, its technical purpose is: for acting as a support carrier for the steel box girder 7.
In the present embodiment, the concrete box girder 6, the steel box girder 7, the first end pier 8, the second end pier 9, and the side piers 91 are arranged to be fixedly disposed with respect to the pile 1, the deck 2, the V-shaped pier 3, the steel tower 4, the first stay cable group 5, and the second stay cable group 90 in a middle-inclined manner, the first stay cable group 5 is provided with at least twelve stay cables and the second stay cable group 90 is provided with at least one stay cable, the first supporting claw portion 42 is arranged to be correspondingly disposed with the first stay strip portion 32, the second supporting claw portion 43 is arranged to be correspondingly disposed with the second stay strip portion 33, the opening lower groove body 44 is arranged to be correspondingly disposed with respect to the opening upper groove body 34 and the opening lower groove body 44 is arranged to be vertically disposed with respect to the opening upper groove body 34 along a widthwise center line of the concrete box girder 6.
Fig. 2 is a second embodiment of the present invention, specifically describing the present embodiment with reference to the drawings, and further includes a temporary support beam 101 and a cushion layer 102, wherein an upper end face portion of the temporary support beam 101 is configured to be coupled to a lower end face portion of the cushion layer 102, a lower end face portion of the temporary support beam 101 is configured to be coupled to an upper end face portion of the table 2, and an upper end face portion of the cushion layer 102 is configured to be coupled to an outer side face portion of the first diagonal portion 32 and an outer side face portion of the second diagonal portion 33, respectively.
In this embodiment, the temporary support beams 101 are provided as concrete trapezoid strips with reinforcing mesh built in and the temporary support beams 101 are provided to be arranged at intervals along the vertical center line of the table 2, the width of the temporary support beams 101 is set to 68-72cm and the trapezoid inner angle α of the temporary support beams 101 is set to 80-86 °.
Through interim supporting beam 101, formed the support tie point to cushion cap 2 and V-arrangement mound 3, realized being connected with cushion cap 2 by interim supporting beam 101, realized being connected with V-arrangement mound 3, its technical aim is: for acting as one of the support carrier members for the first diagonal stripe 32 and the second diagonal stripe 33.
In the present embodiment, the cushion layer 102 is provided as a condensate of the high-strength grouting material and cushion layers 102 are provided between the temporary support beam 101 and the first diagonal stripe portion 32, and between the temporary support beam 101 and the second diagonal stripe portion 33, respectively.
Through bed course 102, formed the support tie point to temporary support beam 101 and V-arrangement mound 3, realized by bed course 102 that with temporary support beam 101 be connected, realized with V-arrangement mound 3's connection, its technical purpose is: for use as a second support carrier member for the first diagonal stripe 32 and the second diagonal stripe 33.
In the other supporting manner of the second first embodiment of the present invention, the width of the temporary supporting beam 101 is set to 68cm and the inside angle α of the trapezoid of the temporary supporting beam 101 is set to 80 °.
In the second supporting mode of the second first embodiment of the present invention, the width of the temporary supporting beam 101 is set to 72cm and the inside angle α of the trapezoid of the temporary supporting beam 101 is set to 80 °.
In the third other supporting manner of the second embodiment of the present invention, the width of the temporary support beam 101 is set to 70cm and the inside angle α of the trapezoid of the temporary support beam 101 is set to 83 °.
Fig. 3 is a third embodiment of the present invention, which is specifically described with reference to the drawings, further comprising an anchor pad device and disposed between the stay cables in the first stay cable group 5 and the steel box girder 7.
In the present embodiment, the anchor pad device is provided to include the core segment 20, the cap segment 30, the outer cylinder shell 40, the inner liner shell 50, the pad plate 60, the anchor ring 70 and the bearing plate 801, and the core segment 20 is provided on the steel box girder 7, the outer cylinder shell 40 and the inner liner shell 50 are respectively provided on the core segment 20, and the cap segment 30 is provided between the outer cylinder shell 40 and the inner liner shell 50, the pad plate 60 is provided on the cap segment 30, the outer cylinder shell 40 and the inner liner shell 50, and the bearing plate 801 is provided on the pad plate 60, the anchor ring 70 is provided on the bearing plate 801, and the cap segment 30, the pad plate 60, the anchor ring 70 and the bearing plate 801 are respectively provided to be coupled with the stay cables in the first stay cable group 5.
In the present embodiment, the core segment 20 is provided as a concrete solid columnar body and the outer side face of the core segment 20 is provided to be coupled with the cap segment 30, the upper end face of the core segment 20 is provided to be coupled with the cap segment 30 and the liner shell 50, respectively, and the lower end face of the core segment 20 is provided to be coupled with the steel box girder 7, and the center line of the core segment 20 is provided to be disposed at an acute angle with the transverse center line of the steel box girder 7.
Through core segment 20, formed the support tie point to cap segment 30 and inside lining shell 50, realized being connected with cap segment 30 by core segment 20, realized being connected with inside lining shell 50, its technical purpose is: for being one of the intermediate connection parts with the steel box girder 7.
In the present embodiment, the cap section 30 is provided to include the filler 301, the shear pin 302, the steel strand 303, and the rib 304, and one of the end faces of the rib 304 is provided as the inner wall coupling of the outer cylinder case 40, and the other end face of the rib 304 is provided as the outer side face coupling of the inner liner case 50
The outer ends of the shear pins 302 are respectively arranged to be coupled with the inner wall of the outer cylinder shell 40, the outer side face of the inner liner shell 50 and the side face of the rib plate 304, the steel strands 303 are arranged to be distributed at intervals along the periphery of the inner wall of the outer cylinder shell 40, and the packing 301 are respectively arranged between the outer cylinder shell 40 and the core section 20, between the outer cylinder shell 40 and the inner liner shell 50, the lower end face of the packing 301 is arranged to be coupled with the steel box girder 7 and the upper end face of the packing 301 is arranged to be coupled with the backing plate 60, the packing 301 is arranged to be coupled with the stay cable in the first stay cable group 5 in a contained manner, the packing 301 is arranged to be a coagulation body of concrete mortar, the shear pins 302 are arranged to be in a T-shaped rod shape, and the adjacent two shear pins 302 are arranged to be distributed at intervals, the steel strands 303 are arranged to be steel strands, and the rib plate 304 are arranged to be rectangular sheet-shaped.
Through the cap section 30, the supporting connection points to the core section 20, the outer cylinder shell 40, the inner liner shell 50 and the backing plate 60 are formed, the connection with the core section 20 is realized by the filling body 301, the connection with the outer cylinder shell 40 is realized, the connection with the inner liner shell 50 is realized, the connection with the backing plate 60 is realized, and the reinforcement treatment to the filling body 301 is realized by the shear nails 302, the steel strands 303 and the rib clamping plates 304, and the technical aim is that: for use as second intermediate connection members with the steel box girder 7 and the first stay cable group 5.
In the present embodiment, the outer cylinder housing 40 is provided as a rectangular tubular body and the inner wall of the outer cylinder housing 40 is provided to be coupled with the cap section 30, the upper end port portion of the outer cylinder housing 40 is provided to be coupled with the tie plate 60 and the lower end port portion of the outer cylinder housing 40 is provided to be coupled with the steel box girder 7.
Through outer barrel housing 40, formed the support tie point to cap section 30 and backing plate 60, realized by outer barrel housing 40 with the cap section 30 be connected, realized with the connection of backing plate 60, its technical purpose is: for use as a third intermediate connection member with the steel box girder 7.
In the present embodiment, the inner liner shell 50 is provided with a rectangular box-like body having a bottom end face in a trapezoidal shape and the outer side face portion of the inner liner shell 50 is provided to be coupled with the cap section 30, the upper end face portion of the inner liner shell 50 is provided to be coupled with the pad 60 and the lower end face portion of the inner liner shell 50 is provided to be coupled with the core section 20.
Through inside lining shell 50, formed the support tie point to core segment 20, cap segment 30 and backing plate 60, by inside lining shell 50, realized being connected with core segment 20, realized being connected with cap segment 30, realized being connected with backing plate 60, its technical purpose lies in: for forming a received cap segment 30 with the outer cartridge shell 40.
In the present embodiment, a through hole body 602 is provided in the middle portion of a plate portion 601 of a backing plate 60 and an opening hole body 603 is provided in the plate portion 601, an inner end portion of the opening hole body 603 is provided to be coupled with a peripheral line of the through hole body 602 and an inner end portion of the opening hole body 603 is provided to be coupled with a peripheral line of the plate portion 601, an outer side portion of the plate portion 601 is provided to be coupled with an outer cylinder case 40 and an inner side portion of the plate portion 601 is provided to be coupled with an inner liner case 50, an upper end face portion of the plate portion 601 is provided to be coupled with a pressure receiving plate 801 and a lower end face portion of the plate portion 601 is provided to be coupled with a cap segment 30, the through hole body 602 is provided to be coupled with a stay cable in a first stay cable group 5, the plate portion 601 is provided to be a rectangular sheet body and the through hole body 602 is provided to be a circular hole body, and the opening hole body 603 is provided to be a long hole body.
Through backing plate 60, formed to cap section 30, urceolus shell 40, inside lining shell 50 and bearing plate 801's support tie point, by plate portion 601, realized being connected with cap section 30, realized being connected with urceolus shell 40, realized being connected with inside lining shell 50, realized being connected with bearing plate 801, realized being connected with the stay cable in the first stay cable group 5 by through-hole body 602, by opening hole body 603, realized preventing that the through-hole body 602 inner wall from producing shearing effort to the stay cable in the first stay cable group 5, its technical purpose is: for serving as intermediate connection members to the first stay cable set 5.
In the present embodiment, the bearing plate 801 is provided as a rectangular annular body having a circular hole through which water leaks, and the outer side face of the bearing plate 801 is provided to be coupled with the outer cylinder case 40 and the inner side face of the bearing plate 801 is provided to be coupled with the inner liner case 50, the upper end face portion of the bearing plate 801 is provided to be coupled with the anchor ring 70, and the lower end face portion of the bearing plate 801 is provided to be coupled with the cap section 30 and the tie plate 60, respectively, and the circular hole through which water leaks of the bearing plate 801 is provided to be coupled with the stay cables in the first stay cable group 5.
Through bearing plate 801, formed to cap section 30, urceolus shell 40, inside lining shell 50 and anchor ring 70's support tie point, by bearing plate 801, realized being connected with cap section 30, realized being connected with urceolus shell 40, realized being connected with inside lining shell 50, realized being connected with anchor ring 70, its technical purpose is: for use as a sealing member for the outer end face portion of the cap segment 30.
In the present embodiment, the anchor ring 70 is provided as a circular ring-shaped body and the lower end face portion of the anchor ring 70 is provided to be coupled with the bearing plate 801, and the anchor ring 70 is provided to be coupled with the stay cables in the first stay cable group 5 in a socket-joint manner.
Through anchor ring 70, formed the support tie point to bearing plate 801, realized by anchor ring 70 with bearing plate 801's connection, its technical purpose is: for acting as a protective sleeve for the stay cables in the first stay cable group 5.
In this embodiment, the lower ends of the stay cables in the first stay cable group 5 are provided as upper ends of tension screws and the tension screws are provided in a through-connection with the steel box girder 7, the lower ends of the tension screws are provided to extend to the lower end face portion of the steel box girder 7 and the tension nuts are provided in a threaded connection with the tension screws, and the upper end face portions of the tension nuts are provided in a contact connection with the lower end face portion of the steel box girder 7.
In a second embodiment of the invention the bridge unit body and the V-pier 3 are coupled to each other in such a way that a divergent surface support is formed.
In this embodiment, the V-shaped piers 3 are coupled to the bridge unit body in such a way that support sides of an equilateral triangle cross section are formed.
In this embodiment, the bridge device body is further provided with a pile 1, a bearing platform 2, a first end pier 8, a second end pier 9 and a side pier 91.
In this embodiment, a first attachment device is further included and is disposed on the bridge device body, the first attachment device being configured to include the steel tower 4, the first set of stay cables 5, and the second set of stay cables 90.
The second embodiment of the present invention is based on the first embodiment,
The invention will be further described with reference to the following examples, which are intended to illustrate the invention and not to limit it further.
The invention relates to a bridge construction method based on a combination of a concrete box girder and a steel box girder, which comprises the following steps:
Pile 1 is respectively driven into a foundation positioned at one side of an urban railway business line, a bearing platform 2 is installed on the pile 1, a concrete mortar pouring forming table part 31 is carried out on the bearing platform 2, a template of a first diagonal stripe part 32 and a template of a second diagonal stripe part 33 are distributed and installed on the upper end face part of the table part 31, concrete mortar pouring is carried out on a first section of the first diagonal stripe part 32 and a first section of the second diagonal stripe part 33, and the ratio of the whole length of the first diagonal stripe part 32 to the length of the first section of the first diagonal stripe part 32 is set as 1:0.58-0.67, the ratio of the entire length of the second diagonal stripe 33 to the length of the first section of the second diagonal stripe 33 is set to 1:0.58-0.67, until the first section of the first diagonal section 32 and the first section of the second diagonal section 33 are formed, removing the form of the first diagonal section 32 and the form of the second diagonal section 33, respectively installing the temporary support beam 101 between the first section of the first diagonal section 32 and the bearing platform 2, between the first section of the second diagonal section 33 and the bearing platform 2, respectively injecting high-strength grouting material between the first section of the first diagonal section 32 and the temporary support beam 101, respectively between the first section of the second diagonal section 33 and the temporary support beam 101 to form a cushion layer 102, realizing the support of the first section of the first diagonal section 32 and the first section of the second diagonal section 33, then installing the form of the second section of the first diagonal section 32 on the first section of the first diagonal section 32, installing the form of the second section of the second diagonal section 33 on the first section of the second diagonal section 33, and completing the mortar forming of the second section of the second diagonal section of the first diagonal section 32 and the second diagonal section 33,
Installing the framework of the core section 20 on the steel box girder 7, installing the template of the core section 20 on the framework, pouring concrete mortar on the core section 20, thereby completing the installation of the core section 20 and the steel box girder 7,
The column parts 82 of the first pier 8 are respectively driven into the outer sides of the piles 1, the supporting parts 81 of the first pier 8 are mounted on the column parts 82 of the first pier 8, thereby completing the mounting of the first pier 8,
Pile body 912 is driven into the foundation on the other side of the urban railway line, beam 911 is mounted on pile body 912, thereby completing the mounting of side pier 91,
The post portions 82 of the second end pier 9 are respectively driven to the outer sides of the pile body portions 912, the supporting portions 81 of the second end pier 9 are mounted on the post portions 82 of the second end pier 9, thereby completing the mounting of the second end pier 9,
One end of the concrete box girder 6 is mounted on the supporting portion 81 of the first pier 8, the clamping plate body 80 of the first pier 8 is connected with the concrete box girder 6, the other end of the concrete box girder 6 is mounted on the first supporting claw portion 42 and the second supporting claw portion 43,
One end of the steel box girder 7 is installed on the supporting part 81 of the second end pier 9, the clamping plate body 80 of the second end pier 9 is connected with the steel box girder 7, the other end of the steel box girder 7 is butted with the other end of the concrete box girder 6,
The first supporting claw portion 42 and the second supporting claw portion 43 are respectively installed with the concrete box girder 6, the first supporting claw portion 42 corresponds to the first diagonal stripe portion 32, the second supporting claw portion 43 corresponds to the second diagonal stripe portion 33, the opening lower groove body 44 corresponds to the opening upper groove body 34, the steel tower 4 is installed on the concrete box girder 6,
The upper ends of the stay cables of the second stay cable group 90 are connected with the tower head 41, the lower ends of the stay cables of the second stay cable group 90 are connected with the middle part of the concrete box girder 6,
The shear force nails 302 are arranged on the outer cylinder shell 40, the inner lining shell 50 and the rib plates 304, the rib plates 304 are arranged on the outer cylinder shell 40 and the inner lining shell 50, the lower ends of the steel stranded wires 303 are welded with the steel box girder 7, the outer cylinder shell 40 and the inner lining shell 50 are arranged on the core section 20, the stay cables of the first stay cable group 5 penetrate through the anchor ring 70, the bearing plate 801 and the through hole 602, the stay cables of the first stay cable group 5 pass through gaps between the outer cylinder shell 40 and the inner lining shell 50, the lower ends of the stay cables of the first stay cable group 5 are welded with the upper ends of the tensioning screws, the upper ends of the stay cables of the first stay cable group 5 are connected with the tower head 41, the stay cables of the first stay cable group 5 are tensioned through rotation of tensioning nuts on tensioning screws, the upper end heads of the steel strands 303 are placed at the upper end port parts of the outer cylinder shell 40 and the inner lining shell 50, concrete mortar is injected into gaps between the outer cylinder shell 40 and the inner lining shell 50 to form the filling body 301, connection of the filling body 301 and the core section 20 is achieved, the outer side part of the bearing plate 801 is welded with the outer cylinder shell 40, the inner side part of the bearing plate 801 is welded with the inner lining shell 50, and the lower end part of the bearing plate 801 is connected with the filling body 301, so that connection of the stay cables of the first stay cable group 5 and the steel box girder 7 is completed.
In a second embodiment of the present invention, the steps are:
the ratio of the entire length of the first diagonal stripe 32 to the length of the first section of the first diagonal stripe 32 is set to 1:0.58, the ratio of the entire length of the second diagonal stripe 33 to the length of the first section of the second diagonal stripe 33 is set to 1:0.58.
In a third embodiment of the present invention, the steps are:
The ratio of the entire length of the first diagonal stripe 32 to the length of the first section of the first diagonal stripe 32 is set to 1:0.67, the ratio of the entire length of the second diagonal stripe 33 to the length of the first section of the second diagonal stripe 33 is set to 1:0.67.
A fourth embodiment of the present invention comprises the steps of:
The ratio of the entire length of the first diagonal stripe 32 to the length of the first section of the first diagonal stripe 32 is set to 1:0.62, the ratio of the entire length of the second diagonal stripe 33 to the length of the first section of the second diagonal stripe 33 is set to 1:0.62.
When the invention is verified, the simultaneous installation of the concrete box girder 6 and the steel box girder 7 is realized, the integrated installation precision is ensured, the construction of the support piers is ensured through the construction of the pile column 1, the bearing platform 2, the V-shaped piers 3, the first end piers 8, the second end piers 9 and the side piers 91, the casting construction of the platform part 31, the first diagonal stripe part 32 and the second diagonal stripe part 33 is solved through the temporary support beam 101 and the cushion layer 102, the dimensional precision requirement between the first diagonal stripe part 32 and the second diagonal stripe part 33 is ensured, and the field installation of the diagonal ropes of the first diagonal rope set 5 and the steel box girder 7 is solved through the core section 20, the cap section 30, the outer barrel shell 40, the lining shell 50, the cushion plate 60, the anchor ring 70 and the bearing plate 801, the installation precision of the diagonal ropes of the first diagonal rope set 5 and the steel box girder 7 is ensured, and the connection strength between the cap section 30 and the core section 20 is improved.
The invention has the following characteristics:
1. due to the design of the bridge device body and the V-shaped piers 3, the bridge device body is used for crossing a railway business line, the V-shaped piers 3 are used for supporting the diverging surface of the bridge device body, and the bridge pier is not used for carrying out planar support, so that the stability of the bridge crossing the railway business line is improved.
2. Due to the design of the pile 1, the bearing platform 2, the first end pier 8, the second end pier 9 and the side piers 91, four-point pier support is realized.
3. Due to the design of the steel tower 4, the first stay cable group 5 and the second stay cable group 90, cable-stayed support is realized, and the span length is increased.
4. Due to the design of the temporary supporting beam 101 and the cushion layer 102, the construction of the first supporting claw portion 42 and the second supporting claw portion 43 is realized, and the construction quality is ensured.
5. Due to the design of the core segment 20, the cap segment 30, the outer cylinder shell 40, the inner liner shell 50, the base plate 60, the anchor ring 70 and the bearing plate 801, the first stay cable group 5 is inlaid and fixed.
6. Because the structure shape is designed to limit the numerical range, the numerical range is the technical characteristic in the technical scheme of the invention, and the technical characteristic of the numerical range is not calculated through a formula or obtained through limited tests, and the tests show that the technical characteristic of the numerical range has good technical effect.
7. Because the technical characteristics of the invention are designed, the experiment shows that the performance indexes of the invention are at least 1.7 times of the existing performance indexes under the independent and mutually aggregated functions of the technical characteristics, and the invention has good market value through evaluation.
Still other technical features of the bridge unit body and V-pier 3 coupled to form a divergent surface support are one of the embodiments of the present invention, and the technical features of the above-described embodiments may be combined arbitrarily, and embodiments of all possible combinations of the technical features of the above-described embodiments are not described in order to satisfy the requirements of patent laws, patent implementation details, and inspection guidelines.
Therefore, in the technical field of bridge devices and construction methods based on the combination of concrete box girders and steel box girders, all the technical contents comprising the inner layer 1 as a mixture formed by chemical fertilizer and plant straw or plant leaf bodies under high pressure are within the protection scope of the invention.
The above embodiment is only one implementation form of the bridge device and the construction method based on the combination of the concrete box girder and the steel box girder, and according to other variants of the scheme provided by the invention, components or steps in the bridge device and the construction method are added or reduced, or the bridge device and the construction method are used in other technical fields close to the invention, and all fall into the protection scope of the invention.

Claims (4)

1. A bridge construction method based on a concrete box girder and steel box girder combination is characterized by comprising the following steps:
Wherein the bridge device is arranged to comprise a bridge device body with a concrete box girder (6) and a steel box girder (7), a V-shaped pier (3) which is arranged to be connected with the concrete box girder (6) or the steel box girder (7) and is provided with supporting diagonal stripe parts distributed in a branching way,
The bridge device body and the V-shaped piers (3) are mutually connected in a mode of forming a divergent surface support,
The V-shaped pier (3) is connected with the bridge device body in a mode of forming the supporting edge of the equilateral triangle section,
The bridge device body is arranged to further comprise a pile (1), a bearing platform (2), a first end pier (8), a second end pier (9) and a side pier (91),
The bridge device also comprises a first accessory device which is arranged on the bridge device body and comprises a steel tower (4), a first stay cable group (5) and a second stay cable group (90),
The concrete box girder (6) is connected with the steel box girder (7), the V-shaped piers (3), the steel towers (4) and the first end piers (8) are respectively arranged on the concrete box girder (6), the bearing platform (2) is arranged between the pile column (1) and the V-shaped piers (3), the second end piers (9) and the side piers (91) are respectively arranged on the steel box girder (7), the second stay cable group (90) is arranged between the concrete box girder (6) and the steel towers (4), the first stay cable group (5) is arranged between the steel box girder (7) and the steel towers (4),
The utility model also comprises a temporary supporting beam (101) and a cushion layer (102), wherein the upper end face part of the temporary supporting beam (101) is connected with the lower end face part of the cushion layer (102), the lower end face part of the temporary supporting beam (101) is connected with the upper end face part of the bearing platform (2), the upper end face parts of the cushion layer (102) are respectively connected with the outer side face parts of the first inclined strip part (32) and the outer side face parts of the second inclined strip part (33),
Also comprises an anchor backing plate device, and the anchor backing plate device is arranged between the stay ropes in the first stay rope group (5) and the steel box girder (7),
The V-shaped pier (3) is provided with a table part (31), a first diagonal part (32) and a second diagonal part (33), one side part of the upper end surface of the table part (31) is provided to be connected with the lower end surface part of the first diagonal part (32), the other side part of the upper end surface of the table part (31) is provided to be connected with the lower end surface part of the second diagonal part (33), an opening upper groove body (34) is arranged between the first diagonal part (32) and the second diagonal part (33), the upper end surface parts of the first diagonal part (32) and the second diagonal part (33) are respectively provided to be connected with the concrete box girder (6), the lower end surface part of the table part (31) is provided to be connected with the bearing platform (2), the table part (31), the first diagonal part (32) and the second diagonal part (33) are respectively provided to be strip bodies, and the contour lines formed by the opening upper groove body (34) and the lower end surface part of the concrete box girder (6) are provided to be arc lines with equal sides,
The inner end of the concrete box girder (6) is arranged to be in butt joint with the steel box girder (7) and the lower end face of the inner end of the concrete box girder (6) is arranged to be in joint with the V-shaped pier (3), the upper end face of the inner end of the concrete box girder (6) is arranged to be in joint with the steel tower (4) and the lower end face of the outer end of the concrete box girder (6) is arranged to be in joint with the first pier (8), the inner side of the outer end of the concrete box girder (6) is arranged to be in joint with the second stay cable group (90),
The inner end of the steel box girder (7) is arranged to be in butt joint with the concrete box girder (6) and the upper end face part of the steel box girder (7) is arranged to be in joint with the first stay cable group (5), the lower end face part of the outer end of the steel box girder (7) is arranged to be in joint with the second end pier (9) and the lower end face part of the inner side of the outer end of the steel box girder (7) is arranged to be in joint with the side pier (91),
The pile (1) is a round column body, the upper end face of the pile (1) is connected with the bearing platform (2), the lower end of the pile (1) is connected with the foundation in an embedded way, the piles (1) are distributed in rows and columns,
The steel tower (4) is provided to include a tower head (41), a first supporting claw (42) and a second supporting claw (43) and one side portion of the lower end face of the tower head (41) is provided to be coupled with the upper end face portion of the first supporting claw (42), the other side portion of the lower end face of the tower head (41) is provided to be coupled with the upper end face portion of the second supporting claw (43) and an opening lower groove body (44) is provided between the first supporting claw (42) and the second supporting claw (43), the lower end face portion of the first supporting claw (42) and the lower end face portion of the second supporting claw (43) are respectively provided to be coupled with the concrete box girder (6) and the upper end face portion of the tower head (41) is respectively provided to be coupled with the first inclined cable group (5) and the second inclined cable group (90), the tower head (41), the first supporting claw (42) and the second supporting claw (43) are respectively provided to be strip-shaped bodies and the tower head (41) and the first supporting claw (42) and the second supporting claw (43) are respectively provided to be distributed in a shape of a line and the outline of the outer periphery of the tower head (41) and the second supporting part (41) are respectively provided to form a circle profile, the outline line formed by the opening lower groove body (44) and the upper end face part of the concrete box girder (6) is set to be a triangle with arc at the corner part,
The upper end of one of the first stay cables (5) is connected with the steel tower (4) and the lower end of one of the first stay cables (5) is connected with the steel box girder (7), one of the first stay cables (5) is a steel wire rope,
The upper end of one of the second stay cables (90) is connected with the steel tower (4) and the lower end of one of the second stay cables (90) is connected with the concrete box girder (6), one of the second stay cables (90) is a steel wire rope,
The first end pier (8) and the second end pier (9) are respectively arranged to comprise a supporting part (81) and a column part (82), the lower end face part of the supporting part (81) is arranged to be connected with the upper end face part of the column part (82), the lower end head of the column part (82) is arranged to be connected with a foundation implantation type, the upper end face part of the transverse part of the supporting part (81) of the first end pier (8) is arranged to be connected with a concrete box girder (6), the upper end face part of the transverse part of the supporting part (81) of the second end pier (9) is arranged to be connected with a steel box girder (7), the supporting part (81) is arranged to be an L-shaped strip body with a clamping plate body (80) on the side face of the vertical part, the clamping plate body (80) of the first end pier (8) is arranged to be connected with the side face part of the concrete box girder (6), the clamping plate body (80) of the second end pier (9) is arranged to be connected with the side face part of the steel box girder (7), the column part (82) is arranged to be circular, the clamping plate bodies (82) are arranged to be distributed vertically at intervals along the center line of the supporting part (81),
The side pier (91) is arranged to comprise a beam part (911) and a pile body part (912), the lower end face part of the beam part (911) is arranged to be connected with the upper end face part of the pile body part (912), the lower end head of the pile body part (912) is arranged to be connected with a foundation in an embedded way, the upper end face part of the beam part (911) is arranged to be connected with a steel box beam (7), the beam part (911) is arranged to be a T-shaped strip body, a rib plate (910) is arranged between the vertical part and the transverse part of the end head of the beam part (911), the rib plate (910) is arranged to be a splayed sheet body, the pile body part (912) is arranged to be a round column body and the pile body part (912) is arranged to be distributed at intervals along the vertical center line of the beam part (911),
The bridge construction method comprises the following steps:
Driving piles (1) into foundations positioned on one side surface of an urban railway business line respectively, installing a bearing platform (2) on the piles (1), performing concrete mortar pouring on the bearing platform (2) to form a table part (31), arranging a template of a first diagonal stripe part (32) and a template of a second diagonal stripe part (33) on the end surface part of the upper end of the table part (31), performing concrete mortar pouring on a first section of the first diagonal stripe part (32) and a first section of the second diagonal stripe part (33), and setting the ratio of the whole length of the first diagonal stripe part (32) to the length of the first section of the first diagonal stripe part (32) to be 1:0.58-0.67, the ratio of the length of the whole second diagonal stripe (33) to the length of the first section of the second diagonal stripe (33) is set to 1:0.58-0.67, after the first section of the first diagonal section (32) and the first section of the second diagonal section (33) are formed, removing the formwork of the first diagonal section (32) and the formwork of the second diagonal section (33), respectively installing the temporary support beam (101) between the first section of the first diagonal section (32) and the bearing platform (2), respectively installing the formwork of the second diagonal section (33) on the first section of the first diagonal section (32), respectively injecting high-strength grouting materials between the first section of the first diagonal section (32) and the temporary support beam (101), respectively injecting high-strength grouting materials between the first section of the second diagonal section (33) and the temporary support beam (101) to form a cushion layer (102), realizing the support of the first section of the first diagonal section (32) and the first section of the second diagonal section (33), then installing the formwork of the second section of the first diagonal section (32) on the first section of the first diagonal section (32), and then casting mortar on the second section of the second diagonal section (33) to finish the forming mortar,
Installing the framework of the core section (20) on the steel box girder (7), installing the template of the core section (20) on the framework, pouring concrete mortar on the core section (20), thereby completing the installation of the core section (20) and the steel box girder (7),
The column parts (82) of the first end pier (8) are respectively driven into the outer sides of the piles (1), the supporting parts (81) of the first end pier (8) are arranged on the column parts (82) of the first end pier (8), so that the installation of the first end pier (8) is completed,
Pile body parts (912) are respectively driven into foundations positioned on the other side face of the business line of the urban railway, and beam parts (911) are arranged on the pile body parts (912), thereby completing the installation of the side piers (91),
The column parts (82) of the second end pier (9) are respectively driven into the outer sides of the pile body parts (912), the supporting parts (81) of the second end pier (9) are arranged on the column parts (82) of the second end pier (9), thereby completing the installation of the second end pier (9),
One end of the concrete box girder (6) is arranged on a supporting part (81) of the first end pier (8), a clamping plate body (80) of the first end pier (8) is connected with the concrete box girder (6), the other end of the concrete box girder (6) is arranged on a first supporting claw part (42) and a second supporting claw part (43),
One end of the steel box girder (7) is arranged on a supporting part (81) of the second end pier (9), a clamping plate body (80) of the second end pier (9) is connected with the steel box girder (7), the other end of the steel box girder (7) is in butt joint with the other end of the concrete box girder (6),
The first supporting claw part (42) and the second supporting claw part (43) are respectively installed with the concrete box girder (6), the first supporting claw part (42) corresponds to the first inclined strip part (32), the second supporting claw part (43) corresponds to the second inclined strip part (33), the opening lower groove body (44) corresponds to the opening upper groove body (34), the steel tower (4) is installed on the concrete box girder (6),
The upper end of the stay cable of the second stay cable group (90) is connected with the tower head (41), the lower end of the stay cable of the second stay cable group (90) is connected with the middle part of the concrete box girder (6),
The shear pin (302) is arranged on an outer cylinder shell (40), an inner lining shell (50) and a rib plate (304), the rib plate (304) is arranged on the outer cylinder shell (40) and the inner lining shell (50), the lower end of a steel strand (303) is welded with a steel box girder (7), the outer cylinder shell (40) and the inner lining shell (50) are arranged on a core section (20), the inclined cable of the first inclined cable group (5) is penetrated in an anchor ring (70), a bearing plate (801) and a through hole body (602), the inclined cable of the first inclined cable group (5) passes through a gap between the outer cylinder shell (40) and the inner lining shell (50), the lower end of the inclined cable of the first inclined cable group (5) is welded with the upper end of a tensioning screw rod, the upper end of the inclined cable of the first inclined cable group (5) is connected with a tower head (41), the inclined cable of the first inclined cable group (5) is tensioned through the rotation of the tensioning screw rod on the tensioning screw rod, the upper end of the inclined cable of the steel strand (303) is placed on the anchor ring (70), the upper end of the steel strand (40) is placed on the upper cylinder shell (50) and the upper cylinder shell (50) is filled with mortar, the gap is filled between the outer cylinder shell (301) and the inner lining shell (50) and the inner lining shell (40) is filled, the gap is filled with the gap is filled, the gap is filled between the gap is filled with the mortar and the inner cylinder (50) and the inner lining shell (50) and the mortar is filled, the gap is filled with the mortar, the mortar is filled with the mortar and the mortar is filled, the inner side part of the bearing plate (801) is welded with the inner lining shell (50), and the lower end surface part of the bearing plate (801) is connected with the filling body (301), so that the connection of the stay cables of the first stay cable group (5) and the steel box girder (7) is completed.
2. The bridge construction method according to claim 1, wherein: the concrete box girder (6), steel box girder (7), first end mound (8), second end mound (9) and side mound (91) are with stake (1), cushion cap (2), V-arrangement mound (3), steel tower (4), first suspension cable group (5) and second suspension cable group (90) set up to be distributed according to middle part cable-stayed fixed mode, first suspension cable group (5) are provided with twelve at least suspension cables and second suspension cable group (90) are provided with at least one suspension cable, first supporting claw portion (42) set up to be distributed with first inclined strip portion (32) correspondence, second supporting claw portion (43) set up to be distributed with second inclined strip portion (33) correspondence, opening lower cell body (44) set up to be distributed with opening upper cell body (34) correspondence and opening lower cell body (44) set up to be arranged to be distributed about the lateral center line of concrete box girder (6) in order.
3. The bridge construction method according to claim 1, wherein: the temporary supporting beams (101) are arranged as concrete trapezoid strips with built-in reinforcing steel meshes, the temporary supporting beams (101) are arranged and distributed at intervals along the vertical central line of the bearing platform (2), the width of the temporary supporting beams (101) is 68-72cm, the trapezoid inner angle alpha of the temporary supporting beams (101) is 80-86 degrees,
The cushion layer (102) is arranged as a condensate of the high-strength grouting material, and the cushion layer (102) is arranged between the temporary supporting beam (101) and the first diagonal stripe part (32) and between the temporary supporting beam (101) and the second diagonal stripe part (33) respectively.
4. The bridge construction method according to claim 1, wherein: the anchor backing plate device is arranged to comprise a core section (20), a cap section (30), an outer cylinder shell (40), an inner lining shell (50), a backing plate (60), an anchor ring (70) and a bearing plate (801), wherein the core section (20) is arranged on a steel box girder (7), the outer cylinder shell (40) and the inner lining shell (50) are respectively arranged on the core section (20), the cap section (30) is arranged between the outer cylinder shell (40) and the inner lining shell (50), the backing plate (60) is arranged on the cap section (30), the outer cylinder shell (40) and the inner lining shell (50), the bearing plate (801) is arranged on the backing plate (60), the anchor ring (70) is arranged on the bearing plate (801), and the cap section (30), the backing plate (60), the anchor ring (70) and the bearing plate (801) are respectively arranged to be connected with stay cables in a first stay cable group (5),
The core section (20) is a concrete solid column body, the outer side face of the core section (20) is connected with the cap section (30), the upper end face of the core section (20) is connected with the cap section (30) and the lining shell (50) respectively, the lower end face of the core section (20) is connected with the steel box girder (7), the central line of the core section (20) is arranged to be distributed at an acute angle with the transverse central line of the steel box girder (7),
The cap section (30) is provided with a filling body (301), shear nails (302), steel strands (303) and rib clamping plates (304), one end face part of the rib clamping plates (304) is arranged to be connected with the inner wall of the outer cylinder shell (40), the other end face part of the rib clamping plates (304) is arranged to be connected with the outer side face part of the inner cylinder shell (50), the outer end heads of the shear nails (302) are respectively arranged to be connected with the inner wall of the outer cylinder shell (40), the outer side face part of the inner cylinder shell (50) and the side face part of the rib clamping plates (304), the steel strands (303) are arranged to be distributed at intervals along the periphery of the inner wall of the outer cylinder shell (40) and the filling bodies (301) are respectively arranged between the outer cylinder shell (40) and the core section (20), the lower end face part of the filling body (301) is arranged to be connected with the steel box girder (7), the upper end face part of the filling body (301) is arranged to be connected with the backing plate (60), the filling body (301) is arranged to be connected with the inner wall of the inner cylinder shell (50), the steel strands (302) are arranged to be connected with the steel strands in a rectangular-shaped shape, the two steel strands (302) are arranged to be arranged at intervals, the two steel strands (301) are arranged to be adjacent to each other, the steel strands (302) are arranged to be arranged at intervals,
The outer cylinder shell (40) is provided with a rectangular tubular body, the inner wall of the outer cylinder shell (40) is provided with a connection with the cap section (30), the upper end port part of the outer cylinder shell (40) is provided with a connection with the backing plate (60), the lower end port part of the outer cylinder shell (40) is provided with a connection with the steel box girder (7),
The inner liner shell (50) is provided with a rectangular box-shaped body with a trapezoidal bottom end face, the outer side face of the inner liner shell (50) is provided to be connected with the cap section (30), the upper end face of the inner liner shell (50) is provided to be connected with the backing plate (60), the lower end face of the inner liner shell (50) is provided to be connected with the core section (20),
A through hole body (602) is provided in the middle part of a plate part (601) of the backing plate (60)) and an opening hole body (603) is provided in the plate part (601), an inner end part of the opening hole body (603) is provided to be coupled with a peripheral line of the through hole body (602) and an inner end part of the opening hole body (603) is provided to be coupled with a peripheral line of the plate part (601), an outer side part of the plate part (601) is provided to be coupled with an outer cylinder shell (40) and an inner side part of the plate part (601) is provided to be coupled with an inner liner shell (50), an upper end face part of the plate part (601) is provided to be coupled with a pressure bearing plate (801) and a lower end face part of the plate part (601) is provided to be coupled with a cap section (30), the through hole body (602) is provided to be coupled with a diagonal cable in the first diagonal cable group (5), the plate part (601) is provided to be a rectangular sheet-shaped body and the through hole body (602) is provided to be a circular hole body, the opening hole body (603) is provided to be a strip-shaped hole body,
The bearing plate (801) is a rectangular annular body with a leaky circular hole, the outer side surface of the bearing plate (801) is connected with the outer cylinder shell (40), the inner side surface of the bearing plate (801) is connected with the inner lining shell (50), the upper end surface of the bearing plate (801) is connected with the anchor ring (70), the lower end surface of the bearing plate (801) is connected with the cap section (30) and the backing plate (60), the leaky circular hole of the bearing plate (801) is connected with the stay cables in the first stay cable group (5),
The anchor ring (70) is arranged into a round ring shape, the end face part of the lower end of the anchor ring (70) is arranged to be connected with the bearing plate (801), the anchor ring (70) is arranged to be connected with the stay cables in the first stay cable group (5) in a sleeved mode,
The lower end of the stay cable in the first stay cable group (5) is connected with the upper end of a tensioning screw rod, the tensioning screw rod is connected with the steel box girder (7) in a penetrating mode, the lower end of the tensioning screw rod extends to the lower end face portion of the steel box girder (7), a tensioning nut is connected with the tensioning screw rod in a threaded mode, and the upper end face portion of the tensioning nut is connected with the lower end face portion of the steel box girder (7) in a contact mode.
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