CN111335135A - Bridge device based on combination of concrete box girder and steel box girder and construction method - Google Patents

Abstract

The utility model provides a bridge device and construction method based on combination of concrete box girder and steel box girder, include the bridge device body that has concrete box girder (6) and steel box girder (7), set up to be linked up with concrete box girder (6) or steel box girder (7) and have V-arrangement mound (3) of the support sloping bar portion that is the crotch and distributes, through the bridge device body, realized strideing across the railway business line, through V-arrangement mound (3), realized the face support that disperses to the bridge device body, no longer carry out a plane through the pier and support, consequently, the bridge stability performance of strideing across the railway business line has been 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 the combination of a concrete box girder and a steel box girder.

Background

Generally, a steel box girder is used as an overhead bridge, so that an interchange between an urban railway business line and an urban road is satisfied, and therefore, a bridge device and a construction method based on a combination of a concrete box girder and a steel box girder are important civil engineering components.

Disclosure of Invention

The object of the invention is a bridge device based on the combination of a concrete box girder and a steel box girder,

the invention aims to provide a bridge construction method based on the 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 the combination of a concrete box girder and a steel box girder and a construction method, so that the stability of the bridge spanning railway business lines is improved.

In order to achieve the purpose, the invention adopts the technical scheme that: a bridge device based on 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 arranged to be connected with the concrete box girder or the steel box girder and are provided with supporting inclined bar parts distributed in a bifurcation manner.

Owing to designed bridge device body and V-arrangement mound, through the bridge device body, realized the leap over to the railway business line, through the V-arrangement mound, realized supporting the face that diverges of bridge device body, no longer carry out a plane through the pier and support, consequently improved the bridge stability ability of leap over the railway business line.

The invention designs that the bridge device body and the V-shaped pier are connected with each other in a mode of forming the divergent surface support.

The invention designs that the V-shaped pier is connected with the bridge device body in a mode of forming an equilateral triangle section supporting edge.

The invention designs that the bridge device body further comprises a pile, a bearing platform, a first end pier, a second end pier and a side pier.

The invention designs a bridge device, which further 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 in butt joint connection with the steel box girder, the lower end surface of the inner end of the concrete box girder is in connection with the V-shaped pier, the upper end surface of the inner end of the concrete box girder is in connection with the steel tower, the lower end surface of the outer end of the concrete box girder is in connection with the first end pier, and the inner side of the outer end of the concrete box girder is in connection with the second stay cable group.

The invention designs that the inner end of the steel box girder is in butt joint connection with the concrete box girder, the upper end surface of the steel box girder is in connection with the first stay cable group, the lower end surface of the outer end of the steel box girder is in connection with the second end pier, and the lower end surface of the inner side of the outer end of the steel box girder is in connection with the side pier.

The invention designs that the piles are arranged into a circular columnar body, the upper end surface of each pile is connected with the bearing platform, the lower end of each pile is connected with the foundation in an embedded mode, and the piles are distributed in rows and columns.

The invention designs that the V-shaped pier comprises a table part, a first inclined bar part and a second inclined bar part, one side part of the upper end surface of the table part is connected with the lower end surface of the first inclined bar part, the other side part of the upper end surface of the table part is connected with the lower end surface of the second inclined bar part, an open upper groove body is arranged between the first inclined bar part and the second inclined bar part, the upper end surface of the first inclined bar part and the upper end surface of the second inclined bar part are respectively connected with the concrete box girder, the lower end surface of the table part is connected with a bearing platform, the table part, the first inclined bar part and the second inclined bar part are respectively arranged into a strip-shaped body, and the outline line formed by the open upper groove body and the lower end surface of the concrete box girder is arranged into a triangle with equilateral arc lines at the corner parts.

The invention designs that the steel tower comprises a tower head part, a first supporting claw part and a second supporting claw part, one side part of the lower end surface of the tower head part is connected with the upper end surface part of the first supporting claw part, the other side part of the lower end surface of the tower head part is connected with the upper end surface part of the second supporting claw part, an open lower groove body is arranged between the first supporting claw part and the second supporting claw part, the lower end surface part of the first supporting claw part and the lower end surface part of the second supporting claw part are respectively connected with a concrete box girder, the upper end surface part of the tower head part is respectively connected with a first stay cable group and a second stay cable group, the tower head part, the first supporting claw part and the second supporting claw part are respectively arranged into a strip-shaped body, the tower head part and the first supporting claw part and the second supporting claw part are respectively arranged into a Y-shaped distribution, the outline line of the outer side surface formed by the tower head part and the first supporting claw part is arranged into The contour lines of the surfaces are respectively arranged as a part of the circumference line, and the contour lines formed by the lower groove body of the opening and the end surface part of the upper end of the concrete box girder are arranged as triangles with arc lines at the corners.

The invention designs that the upper end of one of the stay cables in the first stay cable group is connected with the steel tower, the lower end of one of the stay cables in the first stay cable group is connected with the steel box girder, and one of the stay cables in the first stay cable group is a steel wire rope.

The invention designs that the upper end of one of the stay cables in the second stay cable group is connected with the steel tower, the lower end of one of the stay cables in the second stay cable group is connected with the concrete box girder, and one of the stay cables in the second stay cable group is a steel wire rope.

The invention designs that a first end pier and a second end pier are respectively arranged to comprise a support part and a column part, the lower end surface part of the support part is connected with the upper end surface part of the column part, the lower end of the column part is connected with a foundation in an embedding way, the upper end surface part of the transverse part of the support part of the first end pier is connected with a concrete box girder, the upper end surface part of the transverse part of the support part of the second end pier is connected with the steel box girder, the support part is an L-shaped strip-shaped body with a clamping plate body on the side surface of a vertical part, the clamping plate body of the first end pier is connected with the side surface part of the concrete box girder, the clamping plate body of the second end pier is connected with the side surface part of the steel box girder, the column part is arranged into a circular column-shaped body, and.

The invention designs that the side pier comprises a beam part and a pile part, the lower end face of the beam part is connected with the upper end face of the pile part, the lower end of the pile part is connected with a foundation in an embedded mode, the upper end face of the beam part is connected with a steel box girder, the beam part is arranged into a T-shaped strip body, rib plates are arranged between the vertical part and the horizontal part of the end of the beam part, the rib plates are arranged into splayed sheet bodies, the pile part is arranged into a circular column body, and the pile part is arranged into a spaced distribution 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 column, a bearing platform, a V-shaped pier, a steel tower, a first stay cable group and a second stay cable group which are arranged in a manner of obliquely pulling and fixing the middle part, wherein 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 arranged to be correspondingly distributed with the first stay cable part, a second supporting claw part is arranged to be correspondingly distributed with the second stay cable part, an opening lower groove body is arranged to be correspondingly distributed with an opening upper groove body, and the opening lower groove body is arranged to be vertically distributed with the opening upper groove body along the transverse central line of the concrete box girder.

The invention designs that the temporary support beam and the cushion layer are further included, the upper end surface part of the temporary support beam is connected with the lower end surface part of the cushion layer, the lower end surface part of the temporary support beam is connected with the upper end surface part of the bearing platform, and the upper end surface part of the cushion layer is respectively connected with the outer side part of the first inclined strip part and the outer side part of the second inclined strip part.

The invention designs that the temporary support beams are arranged into concrete trapezoid strips with built-in steel mesh sheets and are arranged and distributed at intervals along the vertical center line of the bearing platform, the width of the temporary support beams is set to be 68-72cm, and the trapezoid internal angle α of the temporary support beams is set to be 80-86 degrees.

The invention designs that the cushion layer is set as a concretion of the high-strength grouting material, and the cushion layer is arranged between the temporary support beam and the first inclined bar part and between the temporary support beam and the second inclined bar part respectively.

The invention designs the steel box girder, which also comprises an anchor backing plate device, wherein 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 an anchor backing plate device is arranged to comprise a core section, a cap section, an outer cylinder shell, an inner lining shell, a backing plate, an anchor ring and a bearing plate, wherein the core section is arranged on a steel box girder, the core section is respectively provided with the outer cylinder shell and the inner lining shell, the cap section is arranged between the outer cylinder shell and the inner lining shell, the cap section, the outer cylinder shell and the inner lining shell are respectively provided with the backing plate, 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 arranged to be connected with a stay cable in a first stay cable group.

The invention designs that the core section is a concrete solid cylindrical body, the outer side surface part of the core section is connected with the cap section, the upper end surface part of the core section is respectively connected with the cap section and the lining shell, the lower end surface part of the core section is connected with the steel box girder, and the central line of the core section is arranged to form an acute angle with the transverse central line of the steel box girder.

The invention designs that a cap section is arranged to comprise a filling body, shear nails, steel strands and a ribbed plate, one end surface of the ribbed plate is arranged to be connected with the inner wall of an outer cylinder shell, the other end surface of the ribbed plate is arranged to be connected with the outer side surface 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 surface of the inner liner shell and the side surface of the ribbed 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 a core section and between the outer cylinder shell and the inner liner shell, the lower end surface of the filling body is arranged to be connected with a steel box girder, the upper end surface of the filling body is arranged to be connected with a backing plate, the filling body is arranged to be in an accommodating way with a stay cable in a first stay cable group and is arranged to be a concrete mortar condensation body, the shear nails are arranged to be T, the steel strand is arranged as a steel wire and the ribbed plate is arranged as a rectangular plate.

The invention designs that the outer cylinder shell is arranged into a rectangular tubular body, the inner wall of the outer cylinder shell is arranged to be connected with the cap section, the port part at the upper end of the outer cylinder shell is arranged to be connected with the base plate, and the port part at the lower end of the outer cylinder shell is arranged to be connected with the steel box girder.

The invention provides that the lining shell is a rectangular box-shaped body with a trapezoidal bottom end face, the outer side face of the lining shell is connected with the cap section, the upper end face of the lining shell is connected with the backing plate, and the lower end face of the lining shell is connected with the core section.

The invention provides that a through hole body is arranged in the middle of a plate part 601 of a base plate, an opening hole body is arranged in the plate part 601, the inner end opening part of the opening hole body is connected with the peripheral line of the through hole body, the inner end opening part of the opening hole body is connected with the peripheral line of the plate part 601, the outer side surface part of the plate part 601 is connected with an outer cylinder shell, the inner side surface part of the plate part 601 is connected with an inner lining shell, the upper end surface part of the plate part 601 is connected with a pressure bearing plate, the 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 into a rectangular sheet body, the through hole body is arranged into a circular hole body.

The invention designs that the bearing plate is a rectangular annular body with a leakage circular hole, the outer side surface of the bearing plate is connected with the outer cylinder shell, the inner side surface of the bearing plate is connected with the lining shell, the upper end surface of the bearing plate is connected with the anchor ring, the lower end surface of the bearing plate is respectively connected with the cap section and the backing plate, and the leakage circular hole of the bearing plate is connected with the stay cable in the first stay cable group.

The invention designs that the anchor ring is arranged into a circular ring-shaped body, the end surface part of the lower end of the anchor ring is connected with the pressure bearing plate, and the anchor ring is connected with the stay cables in the first stay cable group in a sleeved mode.

The invention designs that the lower end head of the stay cable in the first stay cable group is connected with the upper end head of the tensioning screw rod, the tensioning screw rod is connected with the steel box girder in a penetrating mode, the lower end head of the tensioning screw rod is extended to the lower end face part of the steel box girder, the tensioning nut is connected with the tensioning screw rod in a threaded mode, and the upper end face part of the tensioning nut is connected with the lower end face part of the steel box girder in a contact mode.

The invention designs a bridge construction method based on the combination of a concrete box girder and a steel box girder, which comprises the following steps:

the method comprises the following steps of respectively driving piles into a foundation located on one side face of an urban railway business line, installing a bearing platform on the piles, pouring concrete mortar on the bearing platform to form a platform part, distributing and installing a template of a first inclined strip part and a template of a second inclined strip part on the upper end face of the platform part, pouring concrete mortar on a first section of the first inclined strip part and a first section of the second inclined strip part, and setting the proportion of the whole length of the first inclined strip part to the length of the first section of the first inclined strip part to be 1: 0.58-0.67, and setting the ratio of the whole length of the second slash section to the length of the first section of the second slash section to be 1: 0.58-0.67, after the first section of the first inclined bar portion and the first section of the second inclined bar portion are formed, removing the formwork of the first inclined bar portion and the formwork of the second inclined bar portion, respectively installing temporary support beams between the first section of the first inclined bar portion and the bearing platform and between the first section of the second inclined bar portion and the bearing platform, respectively injecting high-strength grouting material between the first section of the first inclined bar portion and the temporary support beams and between the first section of the second inclined bar portion and the temporary support beams to form a cushion layer, realizing the support of the first section of the first inclined bar portion and the first section of the second inclined bar portion, then installing the formwork of the second section of the first inclined bar portion on the first section of the first inclined bar portion, installing the formwork of the second section of the second inclined bar portion on the first section of the second inclined bar portion, and pouring concrete mortar on the second section of the first inclined bar portion and the second section of the second inclined bar portion to finish the forming of the V-shaped pier,

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 to complete the installation of the core section and the steel box girder,

the column part of the first end pier is respectively driven into the outer side of the pile, the support part of the first end pier is arranged on the column part of the first end pier, thereby completing the installation of the first end pier,

the pile body is respectively driven into the foundation on the other side surface of the urban railway business line, the beam part is arranged on the pile body part, thereby completing the installation of the side pier,

the column part of the second end pier is respectively driven into the outer side of the pile body part, the support part of the second end pier is arranged on the column part of the second end pier, thereby completing the installation of the second end pier,

one end of the concrete box girder is arranged on the support 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 support 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 butted 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, so that the first supporting claw part corresponds to the first inclined bar part, the second supporting claw part corresponds to the second inclined bar part, the lower groove body of the opening corresponds to the upper groove body of the opening, the steel tower is installed on the concrete box girder,

the upper end head of the stay cable of the second stay cable group is connected with the head part of the tower, the lower end head of the stay cable of the second stay cable group is connected with the middle part of the concrete box girder,

the shear nails are arranged on the outer cylinder shell, the inner lining shell and the rib clamping plates, the rib clamping plates are arranged on the outer cylinder shell and the inner lining shell, the lower end of the steel strand is welded with the steel box girder, the outer cylinder shell and the inner lining shell are arranged on the core section, the stay cable of the first stay cable group is penetrated through the anchor ring, the pressure bearing plate and the through hole body, the stay cable of the first stay cable group passes through the gap between the outer cylinder shell and the inner lining shell, the lower end of the stay cable of the first stay cable group is welded with the upper end of the tension screw rod, the upper end of the stay cable of the first stay cable group is connected with the tower head part, the stay cable of the first stay cable group is tensioned through the rotation of the tension nut on the tension screw rod, the upper end of the steel strand is placed at the upper end port parts of the outer cylinder shell and the inner lining shell, concrete mortar is injected into the gap between the outer cylinder shell and the inner lining shell to form the filler body, thereby realizing the connection of the filler body and the core section, the outer side surface of the bearing plate is welded with the outer cylinder shell, the inner side surface of the bearing plate is welded with the lining shell, and the end surface of the lower end of the bearing plate is connected with the filling body, so that the connection between the stay cable of the first stay cable group and the steel box girder is completed.

The invention has the technical effects that: the cable-stayed 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, the consolidation system is integrally constructed in one step in an instructive construction step according to a design drawing, but reinforcing steel bars (three are arranged side by side) and steel strands are dense in the system, the concrete is marked as c60, the construction is difficult, and the concrete is difficult to fall; the construction method comprises the steps of changing an inverted triangle structure formed by an original V-shaped pier body and a beam body into a V-shaped pier body which is a component with two overhanging ends, causing the risk of tension cracking in the middle of the V-shaped pier body if the construction is improper, pouring and forming the V-shaped pier body twice during construction, completely adopting a shaped steel template to ensure the size of the pier body to be correct and the appearance to be integrally attractive, removing the template after the pier body is cured for 14 days, constructing a temporary support which is a reinforced concrete component, adopting C40 concrete, internally matching a phi 16 layer of reinforced mesh sheet, supporting the root part on a bearing platform, supporting the top part at the middle position of the V-shaped pier body, and simultaneously keeping a 2cm pier space at the joint of the top part of the temporary support and the V-shaped pier body to prevent the concrete from shrinking and creeping, filling gaps with high-strength grouting materials at the later stage, wherein the main steel tower is designed into two towers, each of which is divided into a front limb and a rear limb, and 4 tower legs in total, a steel-concrete combination section is arranged at the tower legs, the inclined length of the combination section is 12.74 meters, the tower with the downward inclined length of less than 4.5 meters is filled with concrete from a bearing plate (the stretching end of a steel strand) and the downward inclined length of 4.5 meters from the bearing plate (the stretching end of the steel strand in the tower) is hollowed in the middle, and the surrounding compartments are filled with concrete; the steel strand penetrates into the main tower from the root of the tower, is laid in a compartment along the periphery, and penetrates out from a bearing plate, the bearing plate is a steel plate with the thickness of 5cm, a round hole is reserved in the middle of the steel plate, a common cast iron anchor backing plate needs to be embedded in concrete at the stretching end of the steel strand in conventional construction, a grouting hole is reserved at one corner of the anchor backing plate, but the stretching end of a tower foot is a steel bearing plate in actual design drawing, the common anchor backing plate cannot be embedded in the steel bearing plate, the anchor ring is tightly pressed with the bearing plate after stretching, and grouting cannot be performed in a corrugated pipe due to no air vent during later grouting; when the steel strand is tensioned, the anchor ring is tightly connected with the backing plate, the backing plate is tightly connected with the bearing plate, the anchor ring, the backing plate and the bearing plate are integrated, and the anchor is sealed after tensioning is finished.

In the present technical solution, the V-shaped pier is a foundation member and is also an essential technical feature of the present invention, and the concrete box girder, the steel box girder, the pile column, the cap, 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 are functional members and are features for achieving other technical effects of the present invention, and the design of the technical features of the table portion, the first diagonal portion, the second diagonal portion, the open upper groove body, the tower head portion, the first support claw portion, the second support claw portion, the open lower groove body, the clamp plate body, the bracket portion, the column portion, the ribbed plate, the beam portion, the pile body portion, the temporary support beam, the cushion layer, the core segment, the cap segment, the outer shell, the inner liner shell, the tie plate, the anchor ring, the bearing plate, the filler, the shear pin, the steel strand, the clamp rib plate portion, the 601, the through hole body, and the open hole body is a technical feature that meets the patent.

In the technical scheme, the bridge device body and the V-shaped pier forming the divergent surface support are important technical characteristics, and 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 patent documents in the technical field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a schematic view of one of the first embodiments of the present invention,

figure 2 is a schematic view of a second embodiment of the present invention,

figure 3 is a schematic view of a third embodiment of the present invention,

FIG. 4 is a schematic view showing the connection relationship of the cap section 30, the outer cylindrical shell 40, the inner casing 50, the backing plate 60, the anchor ring 70 and the pressure bearing plate 80 according to the present invention,

figure 5 is a schematic view of the construction of the shim plate 60 of the present invention,

concrete box girder-6, steel box girder-7, pile-1, bearing platform-2, V-shaped pier-3, steel tower-4, first stay cable group-5, second stay cable group-90, first end pier-8, second end pier-9, side pier-91, table part-31, first inclined bar part-32, second inclined bar part-33, open upper groove part-34, tower head part-41, first supporting claw part-42, second supporting claw part-43, open lower groove part-44, clamping plate body-80, supporting part-81, column part-82, pile part-9, and the like,

Ribbed plate-910, beam portion-911, pile body portion-912, temporary support beam-101, cushion layer-102, core segment-20, cap segment-30, outer cylinder shell-40, lining shell-50, backing plate-60, anchor ring-70, pressure bearing plate-80, filler-301, shear pin-302, steel strand-303, ribbed plate-304, plate portion-601, through hole body-602 and open hole body-603.

Detailed Description

Terms such as "having," "including," and "comprising," as used with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof, in accordance with the examination guidelines.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and further, unless otherwise specified, the equipments and materials used in the following examples are commercially available, and if the processing conditions are not explicitly specified, please refer to the commercially available product specifications or follow the conventional method in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a first embodiment of the present invention, which is specifically described with reference to the accompanying drawings, and includes a concrete box girder 6, a steel box girder 7, a pile 1, a 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 connected to the steel box girder 7, the concrete box girder 6 is provided with the V-shaped pier 3, the steel tower 4, and the first end pier 8, the platform 2 is provided between the pile 1 and the V-shaped pier 3, the steel box girder 7 is provided with the second end pier 9 and the side pier 91, the second stay cable group 90 is provided between the concrete box girder 6 and the steel tower 4, and the first stay cable group 5 is provided 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 configured to be butt-coupled with the steel box girder 7 and the lower end surface of the inner end of the concrete box girder 6 is configured to be coupled with the V-pier 3, the upper end surface of the inner end of the concrete box girder 6 is configured to be coupled with the steel tower 4 and the lower end surface of the outer end of the concrete box girder 6 is configured to be coupled with the first end pier 8, and the inner side of the outer end of the concrete box girder 6 is configured to be coupled 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 stay 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 stay cable group 90, realized being connected with first end mound 8, its technical aim at: for use as an extension beam body for the steel box beam 7.

In the present embodiment, the inner end of the steel box girder 7 is provided to be butt-coupled with the concrete box girder 6 and the upper end surface of the steel box girder 7 is provided to be coupled with the first stay cable group 5, the lower end surface of the outer end of the steel box girder 7 is provided to be coupled with the second end pier 9 and the lower end surface inside the outer end of the steel box girder 7 is provided to be coupled with the side pier 91.

Through steel box girder 7, formed the support tie point to first suspension cable group 5, concrete box girder 6, second end mound 9 and side mound 91, by steel box girder 7, realized being connected with first suspension cable group 5, realized being connected with concrete box girder 6, realized holding being connected of mound 9 with the second, realized being connected with side mound 91, its technical aim at: the overhead beam body is used for crossing a railway business line.

In the present embodiment, the piles 1 are arranged as a circular column and the upper end surface of the piles 1 is arranged to be coupled with the bearing platform 2, the lower end of the piles 1 is arranged to be coupled with the foundation in an implantation manner and the piles 1 are arranged in a row.

Through stake 1, formed the support tie point to cushion cap 2, by stake 1, realized being connected with cushion cap 2, its technical aim at: for serving as a support carrier for the platform 2.

In the present embodiment, the V-shaped pier 3 is provided to include a table portion 31, a first slope portion 32 and a second slope portion 33 and one of side portions of an upper end surface of the table portion 31 is provided to be coupled with a lower end surface portion of the first slope portion 32, the other of the side portions of the upper end surface of the table portion 31 is provided to be coupled with a lower end surface portion of the second slope portion 33 and an open upper groove 34 is provided between the first slope portion 32 and the second slope portion 33, the upper end surface portion of the first slope portion 32 and the upper end surface portion of the second slope portion 33 are respectively provided to be coupled with the concrete box girder 6 and the lower end surface portion of the table portion 31 is provided to be coupled with the platform 2, the table portion 31, the first slope portion 32, and the second slope portion 33 are respectively provided as a bar-shaped body and the outline of the open upper tank body 34 and the lower end face portion of the concrete box girder 6 is provided as an equilateral triangle having an arc at the corner portion.

The support connection point of the bearing platform 2 and the concrete box girder 6 is formed through the V-shaped pier 3, the connection with the bearing platform 2 is realized through the platform part 31, the connection with the concrete box girder 6 is realized through the first inclined strip part 32 and the second inclined strip part 33, the torsion acting force between the concrete box girder 6 and the first inclined strip part 32 and the second inclined strip part 33 is released through the opening upper groove body 34, and the technical purpose is that: for serving as a support carrier for the concrete box girder 6.

In the present embodiment, the steel tower 4 is configured to include a tower head portion 41, a first supporting claw portion 42 and a second supporting claw portion 43, and one of side portions of a lower end surface of the tower head portion 41 is configured to be coupled with an upper end surface portion of the first supporting claw portion 42, the other of the side portions of the lower end surface of the tower head portion 41 is configured to be coupled with an upper end surface portion of the second supporting claw portion 43 and an open lower groove portion 44 is provided between the first supporting claw portion 42 and the second supporting claw portion 43, the lower end surface portions of the first supporting claw portion 42 and the second supporting claw portion 43 are respectively configured to be coupled with the concrete box girder 6 and the upper end surface portions of the tower head portion 41 are respectively configured to be coupled with the first stay cable group 5 and the second stay cable group 90, the tower head portion 41, the first supporting claw portion 42 and the second supporting claw portion 43 are respectively configured to be bar-shaped bodies and the tower head portion 41 and the first supporting claw portion 42 and the second supporting claw portion 43, the outline of the outer side face composed of the tower head portion 41 and the first supporting claw portion 42 and the outline of the outer side face composed of the tower head portion 41 and the second supporting claw portion 43 are respectively set as a part of the circumferential line, and the outline of the upper end face portion of the concrete box girder 6 and the opening lower groove body 44 is set as a triangle whose corner portion has an arc line.

Through steel tower 4, formed the support tie point to first suspension cable group 5, second suspension cable group 90 and concrete box roof beam 6, by tower head 41, realized being connected with first suspension cable group 5, realized being connected with second suspension cable group 90, supported claw 43 by first support claw 42 and second, realized being connected with concrete box roof beam 6, by cell body 44 under the opening, realized releasing the torsional effort between concrete box roof beam 6 and first support claw 42 and second support claw 43, its technical aim at: for serving as a support carrier for the first and second stay cable groups 5 and 90.

In this embodiment, the upper end of one of the stay cables of the first stay cable group 5 is configured to be coupled to the steel tower 4, the lower end of one of the stay cables of the first stay cable group 5 is configured to be coupled to the steel box girder 7, and one of the stay cables of the first stay cable group 5 is configured to be a steel wire rope.

Through first suspension cable group 5, formed the support tie point to steel tower 4 and steel box girder 7, by first suspension cable group 5, realized being connected with steel tower 4, realized being connected with steel box girder 7, its technical aim at: for use as a support carrier for the steel box girder 7.

In this embodiment, the upper end of one of the stay cables of the second stay cable group 90 is configured to be coupled to the steel tower 4, the lower end of one of the stay cables of the second stay cable group 90 is configured to be coupled to the concrete box girder 6, and one of the stay cables of the second stay cable group 90 is configured to be a steel 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 at: for serving as a support carrier for the concrete box girder 6.

In the present embodiment, first end pier 8 and second end pier 9 are respectively configured to include a bracket 81 and a pillar 82, and the lower end surface of bracket 81 is configured to be coupled to the upper end surface of pillar 82, the lower end of pillar 82 is configured to be coupled to the ground in an embedded manner, and the transverse upper end surface of bracket 81 of first end pier 8 is configured to be coupled to concrete box girder 6, the transverse upper end surface of bracket 81 of second end pier 9 is configured to be coupled to steel box girder 7, and bracket 8 is configured to be an L-shaped bar having clamping plate 80 on the side of the vertical portion, clamping plate 80 of first end pier 8 is configured to be coupled to the side of concrete box girder 6, and clamping plate 80 of second end pier 9 is configured to be coupled to the side of steel box girder 7, pillar 82 is configured to be a circular pillar, and pillar 82 is configured to be distributed along the vertical center line of bracket 81 at intervals.

Through first end mound 8 and second end mound 9, formed the support tie point to steel box girder 7 and concrete box girder 6, held the clamping plate body 80 and the support portion 81 of mound 9 by the second, realized being connected with steel box girder 7, held the clamping plate body 80 and the support portion 81 of first end mound 8, realized being connected with concrete box girder 6, by column portion 82, realized being connected to support portion 81, its technical aim at: for serving as a support carrier for the concrete box girders 6 and the steel box girders 7.

In the present embodiment, the side pier 91 is configured to include a beam portion 911 and a pile portion 912, and the lower end surface portion of the beam portion 911 is configured to be coupled to the upper end surface portion of the pile portion 912, the lower end of the pile portion 912 is configured to be coupled to the ground in an embedded manner, and the upper end surface portion of the beam portion 911 is configured to be coupled to the steel box girder 7, the beam portion 911 is configured to be a T-shaped bar and a rib plate 910 is provided between the vertical portion and the horizontal portion of the end of the beam portion 911, the rib plate 910 is configured to be a splayed sheet, the pile portion 912 is configured to be a circular column and the pile portion 912 is configured to be distributed at intervals along the.

Through side mound 91, formed the support tie point to steel box girder 7, by roof beam portion 911, realized being connected with steel box girder 7, by rib plate 910, realized handling the enhancement of roof beam portion 911, by pile body portion 912, realized the connection to roof beam portion 911, its technical aim at: for use as a support carrier for the steel box girder 7.

In this embodiment, the concrete box girder 6, the steel box girder 7, the first end pier 8, the second end pier 9 and the side pier 91 are distributed with the pile 1, the cap 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 manner of diagonal-pulling and fixing the middle portion, 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 42 is distributed corresponding to the first diagonal portion 32, the second supporting claw 43 is distributed corresponding to the second diagonal portion 33, the lower opening groove 44 is distributed corresponding to the upper opening groove 34 and the lower opening groove 44 is distributed up and down along the transverse center line of the concrete box girder 6.

Fig. 2 is a second embodiment of the present invention, which will be described in detail with reference to the accompanying drawings, and further includes a temporary support beam 101 and a cushion layer 102, wherein an upper end surface of the temporary support beam 101 is configured to be coupled to a lower end surface of the cushion layer 102, a lower end surface of the temporary support beam 101 is configured to be coupled to an upper end surface of the platform 2, and an upper end surface of the cushion layer 102 is configured to be coupled to an outer side surface of the first and second ridge portions 32 and 33, respectively.

In the present embodiment, the temporary support beams 101 are arranged as a concrete trapezoidal bar with a built-in steel mesh and the temporary support beams 101 are arranged at intervals along the vertical center line of the platform 2, the width of the temporary support beam 101 is set to 68-72cm and the trapezoidal internal angle α of the temporary support beam 101 is set to 80-86 °.

Through a temporary support beam 101, the support connection point of the cushion cap 2 and the V-shaped pier 3 is formed, and the temporary support beam 101 is connected with the cushion cap 2 and the V-shaped pier 3, so that the technical aim is as follows: for acting as one of the support carrier members for the first and second diagonal portions 32, 33.

In the present embodiment, the cushion layer 102 is provided as a condensate of high-strength grouting material and the cushion layer 102 is provided between the temporary support beam 101 and the first slope section 32 and between the temporary support beam 101 and the second slope section 33, respectively, with the cushion layer 102.

Through bed course 102, formed the support connection point to interim supporting beam 101 and V-arrangement mound 3, by bed course 102, realized being connected with interim supporting beam 101, realized being connected with V-arrangement mound 3, its technical aim at: and a second support carrier member for the first and second diagonal portions 32 and 33.

In one of other support means of the second embodiment of the present invention, the width of the temporary support beam 101 is set to 68cm and the trapezoidal internal angle α of the temporary support beam 101 is set to 80 °.

In the second support mode of the second embodiment of the present invention, the width of the temporary support beam 101 is set to 72cm and the trapezoidal internal angle α of the temporary support beam 101 is set to 80 °.

In the third support mode of the second embodiment of the present invention, the width of the temporary support beam 101 is set to 70cm and the trapezoidal internal angle α 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 accompanying drawings, and further includes an anchor pad device, and the anchor pad device is disposed between the stay cables in the first stay cable group 5 and the steel box girder 7.

In this embodiment, the anchor backing plate device is configured to include a core segment 20, a cap segment 30, an outer shell 40, an inner lining shell 50, a backing plate 60, an anchor ring 70 and a bearing plate 80, and the core segment 20 is disposed on the steel box girder 7, the core segment 20 is respectively provided with the outer shell 40 and the inner lining shell 50, and the cap segment 30 is disposed between the outer shell 40 and the inner lining shell 50, the cap segment 30, the outer shell 40 and the inner lining shell 50 are provided with the backing plate 60, and the bearing plate 80 is disposed on the backing plate 60, the bearing plate 80 is provided with the anchor ring 70, and the cap segment 30, the backing plate 60, the anchor ring 70 and the bearing plate 80 are respectively configured to be coupled with the stay cables in the first stay cable group 5.

In the present embodiment, the core segment 20 is configured as a concrete solid column and the outer side surface of the core segment 20 is configured to be coupled with the cap segment 30, the upper end surface of the core segment 20 is respectively configured to be coupled with the cap segment 30 and the lining shell 50 and the lower end surface of the core segment 20 is configured to be coupled with the steel box girder 7, and the center line of the core segment 20 is configured to be distributed at an acute angle with the transverse center line of the steel box girder 7.

Through core segment 20, formed the support connection point to cap segment 30 and inside lining shell 50, by core segment 20, realized being connected with cap segment 30, realized being connected with inside lining shell 50, its technical aim lies in: for use as one of the intermediate connecting members with the steel box girder 7.

In the present embodiment, the cap section 30 is configured to include the filler 301, the shear nails 302, the steel strands 303 and the ribbed plates 304, and one end surface portion of the ribbed plates 304 is configured to be coupled to the inner wall of the outer shell 40, and the other end surface portion of the ribbed plates 304 is configured to be coupled to the outer side surface portion of the inner shell 50 and configured to be coupled to the outer side surface portion of the inner shell

The outer end of shear force nail 302 sets up respectively to the inner wall with outer barrel casing 40, the outside face of inside lining shell 50 and the side connection of double-layered rib board 304, steel strand 303 sets up to the peripheral interval arrangement distribution of the inner wall along outer barrel casing 40 and the obturator 301 sets up respectively between barrel casing 40 and core segment 20, between outer barrel casing 40 and the inside lining shell 50, the lower extreme end face of obturator 301 sets up to articulate with steel box girder 7 and the upper end face of obturator 301 sets up to articulate with backing plate 60, obturator 301 sets up to be contained the formula with the stay cable in first stay cable group 5 and the obturator 301 sets up to the coagulation body of concrete mortar, shear force nail 302 sets up to T font rodlike body and two adjacent shear force nails 302 set up to be interval arrangement distribution, steel strand 303 sets up to the steel wire and double-layered rib board 304 sets up to the rectangle platelike body.

Through cap section 30, formed the support connection point to core segment 20, outer shell 40, inside lining shell 50 and backing plate 60, by obturator 301, realized being connected with core segment 20, realized being connected with outer shell 40, realized being connected with inside lining shell 50, realized being connected with backing plate 60, by shear force nail 302, steel strand wires 303 and double-layered rib board 304, realized handling the reinforcement of obturator 301, its technical aim at: and is used as a second intermediate connecting part for the steel box girder 7 and the first stay cable group 5.

In the present embodiment, the outer cylindrical casing 40 is provided as a rectangular tubular body and the inner wall of the outer cylindrical casing 40 is provided to be coupled with the cap section 30, the upper end port portion of the outer cylindrical casing 40 is provided to be coupled with the pad 60 and the lower end port portion of the outer cylindrical casing 40 is provided to be coupled with the steel box girder 7.

Through outer cartridge shell 40, formed the support connection point to cap section 30 and backing plate 60, by outer cartridge shell 40, realized being connected with cap section 30, realized being connected with backing plate 60, its technical aim at: is used as a third intermediate connecting part with the steel box girder 7.

In the present embodiment, the lining shell 50 is provided as a rectangular box-shaped body having a bottom end surface of a trapezoid and an outer side surface portion of the lining shell 50 is provided to be coupled with the cap segment 30, an upper end surface portion of the lining shell 50 is provided to be coupled with the pad 60 and a lower end surface portion of the lining shell 50 is provided to be coupled with the core segment 20.

Through the lining shell 50, formed the support connection point to core segment 20, cap section 30 and backing plate 60, by lining shell 50, realized being connected with core segment 20, realized being connected with cap section 30, realized being connected with backing plate 60, its technical aim at: for use as part of the cap section 30 forming a receptacle with the outer cartridge housing 40.

In the present embodiment, a through hole body 602 is provided in the middle portion of the plate portion 601 of the tie plate 60 and an open hole body 603 is provided in the plate portion 601, an inner end opening portion of the open hole body 603 is provided to be coupled with the peripheral line of the through hole body 602 and an inner end opening portion of the open hole body 603 is provided to be coupled with the peripheral line of the plate portion 601, an outer side surface portion of the plate portion 601 is provided to be coupled with the outer shell 40 and an inner side surface portion of the plate portion 601 is provided to be coupled with the inner liner shell 50, an upper end surface portion of the plate portion 601 is provided to be coupled with the pressure receiving plate 80 and a lower end surface portion of the plate portion 601 is provided to be coupled with the cap section 30, the through hole body 602 is provided to be coupled with the stay cables in the first stay cable group 5, the plate portion 601 is.

Through backing plate 60, formed the support tie point to cap section 30, outer shell 40, inside lining shell 50 and bearing plate 80, by board 601, realized being connected with cap section 30, realized being connected with outer shell 40, realized being connected with inside lining shell 50, realized being connected with bearing plate 80, by the through-hole body 602, realized being connected with the suspension cable in first suspension cable group 5, by the opening body 603, realized preventing that the through-hole body 602 inner wall from producing shearing force to the suspension cable in first suspension cable group 5, its technical aim at: and a fourth intermediate connecting member for the first stay cable group 5.

In the present embodiment, the pressure bearing plate 80 is provided as a rectangular ring-shaped body having a penetration circular hole and the outer side surface portion of the pressure bearing plate 80 is provided to be coupled with the outer cylinder case 40 and the inner side surface portion of the pressure bearing plate 80 is provided to be coupled with the inner liner case 50, the upper end surface portion of the pressure bearing plate 80 is provided to be coupled with the anchor ring 70 and the lower end surface portion of the pressure bearing plate 80 is provided to be coupled with the cap segment 30 and the pad plate 60, respectively, and the penetration circular hole of the pressure bearing plate 80 is provided to be coupled with the stay cables in the first stay cable group 5.

Through bearing plate 80, formed the support connection point to cap section 30, outer shell 40, inside lining shell 50 and anchor ring 70, by bearing plate 80, realized being connected with cap section 30, realized being connected with outer shell 40, realized being connected with inside lining shell 50, realized being connected with anchor ring 70, its technical aim at: for sealing 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 a lower end surface portion of the anchor ring 70 is provided to be coupled to the pressure receiving plate 80, and the anchor ring 70 is provided to be coupled to the stay cables in the first stay cable group 5 in a muff-coupling manner.

Through anchor ring 70, formed the support connection point to bearing plate 80, by anchor ring 70, realized being connected with bearing plate 80, its technical aim at: for use as a protective sleeve for the stay cables of the first stay cable group 5.

In the present embodiment, the lower end of the stay cable in the first stay cable group 5 is configured to be coupled to the upper end of the tension screw and the tension screw is configured to be coupled to the steel box girder 7 in a through-type manner, the lower end of the tension screw is configured to extend to the lower end surface of the steel box girder 7 and the tension nut is configured to be coupled to the tension screw in a threaded manner, and the upper end surface of the tension nut is configured to be coupled to the lower end surface of the steel box girder 7 in a contact manner.

In a second embodiment of the invention, the body of the bridge installation and the V-shaped piers 3 are coupled to each other in such a way that divergent plane supports are formed.

In this embodiment, the V-shaped piers 3 are coupled to the bridge apparatus body in such a manner as to form supporting sides of an equilateral triangular cross section.

In this embodiment, the bridge installation body is arranged to further comprise a pile 1, a cap 2, a first end pier 8, a second end pier 9 and a side pier 91.

In this embodiment, a first accessory device is further included and disposed on the bridge device body, and the first accessory device is configured to include the steel tower 4, the first stay cable group 5 and the second stay cable group 90.

A second embodiment of the invention is based on the first embodiment,

the invention is further described below with reference to the following examples, which are intended to illustrate the invention but not to limit it further.

A bridge construction method based on combination of a concrete box girder and a steel box girder is disclosed, wherein in the first embodiment of the invention, the steps are as follows:

the method comprises the steps of driving the pile 1 into a foundation located on one side face of an urban railway business line, installing a bearing platform 2 on the pile 1, performing concrete mortar pouring on the bearing platform 2 to form a platform part 31, distributing and installing a template of a first inclined strip part 32 and a template of a second inclined strip part 33 on the upper end face part of the platform part 31, performing concrete mortar pouring on a first section of the first inclined strip part 32 and a first section of the second inclined strip part 33, and setting the ratio of the whole length of the first inclined strip part 32 to the length of the first section of the first inclined strip part 32 as 1: 0.58 to 0.67, and the ratio of the entire length of the second ribbon section 33 to the length of the first section of the second ribbon section 33 is set to 1: 0.58 to 0.67, after the first section of the first diagonal portion 32 and the first section of the second diagonal portion 33 are formed, removing the formwork of the first diagonal portion 32 and the formwork of the second diagonal portion 33, respectively installing the temporary support beams 101 between the first section of the first diagonal portion 32 and the bearing platform 2 and between the first section of the second diagonal portion 33 and the bearing platform 2, respectively injecting high-strength grouting material between the first section of the first diagonal portion 32 and the temporary support beams 101 and between the first section of the second diagonal portion 33 and the temporary support beams 101 to form the cushion layer 102, realizing the support of the first section of the first diagonal portion 32 and the first section of the second diagonal portion 33, then installing the formwork of the second section of the first diagonal portion 32 on the first section of the first diagonal portion 32, installing the formwork of the second section of the second diagonal portion 33 on the first section of the second diagonal portion 33, and performing concrete grouting on the second section of the first diagonal portion 32 and the second section of the second diagonal portion 33, thereby completing the formation of the V-shaped pier 3,

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, performing concrete mortar pouring on the core section 20, thereby completing the installation of the core section 20 and the steel box girder 7,

the column part 82 of the first end pier 8 is driven into the outer side of the pile 1, respectively, the holder part 81 of the first end pier 8 is mounted on the column part 82 of the first end pier 8, whereby the mounting of the first end pier 8 is completed,

the pile body 912 is driven into the ground on the other side of the urban railway business line, and the beam portion 911 is mounted on the pile body 912, thereby completing the mounting of the side pier 91,

the post 82 of the second end pier 9 is driven into the outside of the pile body 912, respectively, and the cradle 81 of the second end pier 9 is mounted on the post 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 bracket 81 of the first end pier 8, the clamp plate body 80 of the first end pier 8 is connected to the concrete box girder 6, the other end of the concrete box girder 6 is mounted on the first supporting claw 42 and the second supporting claw 43,

one end of the steel box girder 7 is arranged on a support 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 butted 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 on the concrete box girder 6, the first supporting claw part 42 corresponds to the first inclined bar part 32, the second supporting claw part 43 corresponds to the second inclined bar 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 ends of the stay cables of the second stay cable group 90 are connected to the tower head 41, the lower ends of the stay cables of the second stay cable group 90 are connected to the middle part of the concrete box girder 6,

the shear nails 302 are arranged on the outer cylinder shell 40, the lining shell 50 and the rib clamping plates 304, the rib clamping plates 304 are arranged on the outer cylinder shell 40 and the lining shell 50, the lower end heads of the steel strands 303 are welded with the steel box girder 7, the outer cylinder shell 40 and the lining shell 50 are arranged on the core section 20, the stay cables of the first stay cable group 5 are penetrated and strung in the anchor ring 70, the bearing plate 80 and the through hole body 602, the stay cables of the first stay cable group 5 pass through the gap between the outer cylinder shell 40 and the lining shell 50, the lower end heads of the stay cables of the first stay cable group 5 are welded with the upper end heads of the tension screws, the upper end heads of the stay cables of the first stay cable group 5 are connected with the tower head part 41, the stay cables of the first stay cable group 5 are tensioned through the rotation of the tension nuts on the tension screws, the upper end heads of the steel strands 303 are placed at the upper end openings of the outer cylinder shell 40 and the lining shell 50, concrete mortar is injected into the gap between the outer cylinder shell 40 and the lining shell 50, the packing 301 is formed to connect the packing 301 to the core segment 20, the outer side surface of the pressure bearing plate 80 is welded to the outer cylindrical shell 40, the inner side surface of the pressure bearing plate 80 is welded to the liner shell 50, and the lower end surface of the pressure bearing plate 80 is connected to the packing 301, thereby completing the connection between the stay cables of the first stay cable group 5 and the steel box girder 7.

The second embodiment of the present invention comprises the following steps:

the ratio of the entire length of the first slash section 32 to the length of the first segment of the first slash section 32 is set to 1: 0.58, the ratio of the length of the entire second diagonal strip portion 33 to the length of the first segment of the second diagonal strip portion 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 slash section 32 to the length of the first segment of the first slash section 32 is set to 1: 0.67, the ratio of the length of the entire second diagonal strip portion 33 to the length of the first segment of the second diagonal strip portion 33 was set to 1: 0.67.

the fourth embodiment of the present invention comprises the following steps:

the ratio of the entire length of the first slash section 32 to the length of the first segment of the first slash section 32 is set to 1: 0.62, the ratio of the length of the entire second diagonal strip portion 33 to the length of the first segment of the second diagonal strip portion 33 is set to 1: 0.62.

when the invention is verified, the concrete box girder 6 and the steel box girder 7 are simultaneously installed, the integrated installation precision is ensured, the construction of the support pier is ensured through the construction of the pile column 1, the bearing platform 2, the V-shaped pier 3, the first end pier 8, the second end pier 9 and the side pier 91, the construction of pouring the table portion 31, the first diagonal member 32 and the second diagonal member 33 is solved by the temporary support beam 101 and the cushion layer 102, the requirement of the dimensional accuracy between the first diagonal member 32 and the second diagonal member 33 is ensured, through the core section 20, the cap section 30, the outer cylinder shell 40, the lining shell 50, the base plate 60, the anchor ring 70 and the bearing plate 80, the field installation of the stay cables of the first stay cable group 5 and the steel box girder 7 is solved, the installation precision of each stay cable of the first stay cable group 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. owing to designed bridge device body and V-arrangement mound 3, through the bridge device body, realized the leap over to the railway business line, through V-arrangement mound 3, realized supporting the face that diverges of bridge device body, no longer carry out a plane through the pier and support, consequently improved the bridge stability ability of leap over the railway business line.

2. Due to the design of the pile 1, the cushion cap 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, the stay support is realized, and the span length is increased.

4. Due to the design of the temporary support beam 101 and the cushion layer 102, the construction of the first support claw part 42 and the second support claw part 43 is realized, and the construction quality is ensured.

5. Due to the design of the core section 20, the cap section 30, the outer cylinder shell 40, the lining shell 50, the backing plate 60, the anchor ring 70 and the bearing plate 80, the embedding and fixing of the first stay cable group 5 are realized.

6. Because the structural shape is limited by the numerical range, the numerical range is the technical characteristic of the technical scheme of the invention, and is not the technical characteristic obtained by formula calculation or limited tests, and tests show that the technical characteristic of the numerical range achieves good technical effect.

7. Due to the design of the technical characteristics of the invention, tests show that each performance index of the invention is at least 1.7 times of the existing performance index under the action of the single and mutual combination of the technical characteristics, and the invention has good market value through evaluation.

Still other features associated with the body of the bridge installation forming the divergent plane support and the V-shaped piers 3 are all one of the embodiments of the present invention, and the features of the above-described embodiments may be combined in any combination, and all possible combinations of the features of the above-described embodiments will not be described again in order to satisfy the requirements of the patent laws, patent practice rules and examination guidelines.

Therefore, in the technical field of bridge devices and construction methods based on the combination of the concrete box girder and the steel box girder, all technical contents including the inner layer 1 which is a mixture formed by chemical fertilizer and plant straws or plant leaf bodies under high pressure are in the protection scope of the invention.

The above embodiment is only one implementation form of the bridge device and construction method based on the combination of the concrete box girder and the steel box girder provided by the invention, and other modifications of the scheme provided by the invention, such as increasing or decreasing the components or steps therein, or applying the invention to other technical fields close to the invention, belong to the protection scope of the invention.

Claims (10)

1. A bridge device and a construction method based on combination of a concrete box girder and a steel box girder are characterized in that: comprises a bridge device body with a concrete box girder (6) and a 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 inclined bar parts distributed in a bifurcation way.

2. The bridge girder assembly according to claim 1, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the bridge unit body and the V-shaped piers (3) are connected to each other in such a way that divergent surface support is formed.

3. The bridge girder assembly of claim 2, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the V-shaped pier (3) is connected with the bridge device body in a mode of forming an equilateral triangle section supporting edge.

4. The bridge girder assembly according to claim 1, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the bridge device body is also provided with a pile column (1), a bearing platform (2), a first end pier (8), a second end pier (9) and a side pier (91),

or, still include first annex device and first annex device sets up on the bridge device body, and first annex device sets up to include steel tower (4), first suspension cable group (5) and second suspension cable group (90).

5. The bridge girder assembly according to claim 4, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the concrete box girder (6) is connected with the steel box girder (7), the concrete box girder (6) is respectively provided with a V-shaped pier (3), a steel tower (4) and a first end pier (8), a bearing platform (2) is arranged between the pile column (1) and the V-shaped pier (3), the steel box girder (7) is respectively provided with a second end pier (9) and a side pier (91), a second stay cable group (90) is arranged between the concrete box girder (6) and the steel tower (4), a first stay cable group (5) is arranged between the steel box girder (7) and the steel tower (4),

or, a temporary support beam (101) and a cushion layer (102) are further included, the upper end surface part of the temporary support beam (101) is connected with the lower end surface part of the cushion layer (102), the lower end surface part of the temporary support beam (101) is connected with the upper end surface part of the bearing platform (2), the upper end surface part of the cushion layer (102) is respectively connected with the outer side surface part of the first inclined strip part (32) and the outer side surface part of the second inclined strip part (33),

or the steel box girder further comprises an anchor backing plate device, and the anchor backing plate device is arranged between the stay cables in the first stay cable group (5) and the steel box girder (7).

6. The bridge girder assembly according to claim 5, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the V-shaped pier (3) is provided to include a table portion (31), a first slope portion (32) and a second slope portion (33) and one side portion of the upper end face of the table portion (31) is provided to be coupled with the lower end face portion of the first slope portion (32), the other side portion of the upper end face of the table portion (31) is provided to be coupled with the lower end face portion of the second slope portion (33) and an open upper groove (34) is provided between the first slope portion (32) and the second slope portion (33), the upper end face portion of the first slope portion (32) and the upper end face portion of the second slope portion (33) are respectively provided to be coupled with the concrete box girder (6) and the lower end face portion of the table portion (31) is provided to be coupled with the support table (2), the table portion (31), the first slope portion (32) and the second slope portion (33) are respectively provided to be strip-shaped bodies and the open upper groove (34) and the lower end face portion of the concrete box girder (6) are provided to be equilateral faces with a corner The shape of the triangle is that,

or the inner end of the concrete box girder (6) is in butt joint connection with the steel box girder (7), the lower end surface of the inner end of the concrete box girder (6) is connected with the V-shaped pier (3), the upper end surface of the inner end of the concrete box girder (6) is connected with the steel tower (4), the lower end surface of the outer end of the concrete box girder (6) is connected with the first end pier (8), the inner side of the outer end of the concrete box girder (6) is connected with the second stay cable group (90),

or the inner end of the steel box girder (7) is in butt joint connection with the concrete box girder (6), the upper end surface of the steel box girder (7) is connected with the first stay cable group (5), the lower end surface of the outer end of the steel box girder (7) is connected with the second end pier (9), the lower end surface of the inner side of the outer end of the steel box girder (7) is connected with the side pier (91),

or the pile (1) is a circular column body, the upper end surface 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 implantation way, and the piles (1) are distributed in rows and columns,

or, the steel tower (4) is set to include a tower head part (41), a first supporting claw part (42) and a second supporting claw part (43), one side part of the lower end face of the tower head part (41) is set to be connected with the upper end face part of the first supporting claw part (42), the other side part of the lower end face of the tower head part (41) is set to be connected with the upper end face part of the second supporting claw part (43) and an opening lower groove body (44) is arranged between the first supporting claw part (42) and the second supporting claw part (43), the lower end face part of the first supporting claw part (42) and the lower end face part of the second supporting claw part (43) are respectively set to be connected with the concrete box girder (6) and the upper end face part of the tower head part (41) is respectively set to be connected with the first stay cable group (5) and the second stay cable group (90), the tower head part (41), the first supporting claw part (42) and the second supporting claw part (43) are respectively set to be strip-shaped bodies and the tower head part The supporting claw parts (42) and the second supporting claw parts (43) are distributed in a Y shape, the contour lines of the outer side faces formed by the tower head parts (41) and the first supporting claw parts (42) and the contour lines of the outer side faces formed by the tower head parts (41) and the second supporting claw parts (43) are respectively arranged as a part of a circumferential line, the contour lines formed by the lower groove bodies (44) of the openings and the upper end face parts of the concrete box beams (6) are arranged as triangles with arc lines at the corners,

or the upper end of one of the stay cables in the first stay cable group (5) is connected with the steel tower (4), the lower end of one of the stay cables in the first stay cable group (5) is connected with the steel box girder (7), one of the stay cables in the first stay cable group (5) is a steel wire rope,

or the upper end of one of the stay cables in the second stay cable group (90) is connected with the steel tower (4), the lower end of one of the stay cables in the second stay cable group (90) is connected with the concrete box girder (6), one of the stay cables in the second stay cable group (90) is a steel wire rope,

or, first end mound (8) and second end mound (9) set up respectively to include support portion (81) and post portion (82) and the lower extreme terminal surface portion of support portion (81) sets up to couple with the upper end terminal surface portion of post portion (82), the lower terminal of post portion (82) sets up to couple with ground implantation and the horizontal portion upper end terminal surface portion of support portion (81) of first end mound (8) sets up to couple with concrete box girder (6), the horizontal portion upper end terminal surface portion of support portion (81) of second end mound (9) sets up to couple with steel box girder (7) and support portion (81) sets up to have the L font striation body of centre gripping plate body (80) in the side of vertical part, centre gripping plate body (80) of first end mound (8) set up to couple with the side portion of concrete box girder (6) and centre gripping plate body (80) of second end mound (9) set up to couple with the side portion of steel box girder (7), the column parts (82) are arranged into a circular column body, the column parts (82) are arranged along the vertical central line of the support part (81) at intervals,

or the side pier (91) is arranged to comprise a beam part (911) and a pile part (912), the lower end face part of the beam part (911) is connected with the upper end face part of the pile part (912), the lower end head of the pile part (912) is connected with the foundation in an embedding mode, the upper end face part of the beam part (911) is connected with the steel box girder (7), the beam part (911) is arranged to be a T-shaped strip body, rib plates (910) are arranged between the vertical part and the horizontal part of the end of the beam part (911), the rib plates (910) are arranged to be splayed sheet bodies, the pile part (912) is arranged to be a circular column body, and the pile part (912) is arranged to be distributed at intervals along the vertical central line of the beam part (911).

7. The bridge girder assembly according to any one of claims 1 to 6, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the concrete box girder (6), the steel box girder (7), the first end pier (8), the second end pier (9) and the side pier (91) are distributed with the pile column (1), the bearing platform (2), the V-shaped pier (3), the steel tower (4), the first stay cable group (5) and the second stay cable group (90) according to the mode of oblique drawing and fixing the middle parts, 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 parts (42) are arranged to be distributed corresponding to the first inclined bar parts (32), the second supporting claw parts (43) are arranged to be distributed corresponding to the second inclined bar parts (33), the lower open slot body (44) is arranged to be distributed corresponding to the upper open slot body (34) and the lower open slot body (44) and the upper open slot body (34) are arranged to be distributed in an up-down arrangement along the transverse center line of the concrete box girder (6).

8. The bridge girder installation based on the combination of the concrete box girder and the steel box girder according to claim 5, wherein the temporary support girders (101) are arranged as concrete trapezoidal bars with built-in steel mesh sheets and the temporary support girders (101) are arranged to be spaced apart from each other along the vertical center line of the platform (2), the width of the temporary support girders (101) is set to be 68-72cm and the trapezoidal inner angle α of the temporary support girders (101) is set to be 80-86 degrees,

or the cushion layer (102) is set as a condensation body of the high-strength grouting material, and the cushion layer (102) is arranged between the temporary support beam (101) and the first slope part (32) and between the temporary support beam (101) and the second slope part (33) and is provided with the cushion layer (102) respectively.

9. The bridge girder assembly according to claim 5, wherein the concrete box girder and the steel box girder are combined to form a bridge girder assembly, wherein: the anchor backing plate device comprises 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 (80), wherein the core section (20) is arranged on a steel box girder (7), the core section (20) is respectively provided with the outer cylinder shell (40) and the inner lining shell (50), the cap section (30) is arranged between the outer cylinder shell (40) and the inner lining shell (50), the cap section (30), the outer cylinder shell (40) and the inner lining shell (50) are respectively provided with the backing plate (60), the bearing plate (80) is arranged on the backing plate (60), the anchor ring (70) is arranged on the bearing plate (80), the cap section (30), the backing plate (60), the anchor ring (70) and the bearing plate (80) are respectively arranged to be connected with a stay cable in a first cable group (5),

or the core section (20) is set to be a concrete solid column body, the outer side surface part of the core section (20) is set to be connected with the cap section (30), the upper end surface part of the core section (20) is respectively set to be connected with the cap section (30) and the lining shell (50), the lower end surface part of the core section (20) is set to be connected with the steel box girder (7), the central line of the core section (20) is set to be distributed in an acute angle with the transverse central line of the steel box girder (7),

or, the cap section (30) is arranged to include a filler (301), a shear nail (302), a steel strand (303) and a rib clamping plate (304), one end surface of the rib clamping plate (304) is arranged to be connected with the inner wall of the outer barrel shell (40), the other end surface of the rib clamping plate (304) is arranged to be connected with the outer side surface of the inner barrel shell (50) and the outer end head of the shear nail (302) is respectively arranged to be connected with the inner wall of the outer barrel shell (40), the outer side surface of the inner barrel shell (50) is connected with the side surface of the rib clamping plate (304), the steel strand (303) is arranged to be distributed along the periphery of the inner wall of the outer barrel shell (40) at intervals and the filler (301) is respectively arranged between the outer barrel shell (40) and the core section (20), the outer barrel shell (40) and the inner barrel shell (50), the lower end surface of the filler (301) is arranged to be connected with the steel box girder (7) and the upper end surface of the filler (301) is arranged to be connected with the cushion, the filler (301) is arranged to be in contained connection with the stay cables in the first stay cable group (5), the filler (301) is arranged to be a concrete of concrete mortar, the shear nails (302) are arranged to be T-shaped rod-shaped bodies, two adjacent shear nails (302) are arranged to be distributed at intervals, the steel strands (303) are arranged to be steel wires, the ribbed plates (304) are arranged to be rectangular sheet-shaped bodies,

or the outer cylinder shell (40) is set to be a rectangular tubular body, the inner wall of the outer cylinder shell (40) is set to be connected with the cap section (30), the upper end port part of the outer cylinder shell (40) is set to be connected with the cushion plate (60) and the lower end port part of the outer cylinder shell (40) is set to be connected with the steel box girder (7),

or the lining shell (50) is arranged to be a rectangular box-shaped body with the bottom end surface being trapezoid, the outer side surface part of the lining shell (50) is arranged to be connected with the cap section (30), the upper end surface part of the lining shell (50) is arranged to be connected with the backing plate (60) and the lower end surface part of the lining shell (50) is arranged to be connected with the core section (20),

or, a through hole body (602) is provided in the middle part of the plate part (601) of the tie plate (60)) and an open hole body (603) is provided in the plate part (601), the inner end opening part of the open hole body (603) is provided to be coupled with the peripheral line of the through hole body (602) and the inner end opening part of the open hole body (603) is provided to be coupled with the peripheral line of the plate part (601), the outer side surface part of the plate part (601) is provided to be coupled with the outer cylinder case (40) and the inner side surface part of the plate part (601) is provided to be coupled with the inner liner case (50), the upper end surface part of the plate part (601) is provided to be coupled with the pressure bearing plate (80) and the lower end surface part of the plate part (601) is provided to be coupled with the cap section (30), the through hole body (602) is provided to be coupled with the stay cables in the first stay cable group (5), the plate part (601, the open pore body (603) is arranged as a strip pore body,

or, the bearing plate (80) is set to be a rectangular ring body with a leakage circular hole and the outer side surface part of the bearing plate (80) is set to be connected with the outer cylinder shell (40) and the inner side surface part of the bearing plate (80) is set to be connected with the lining shell (50), the upper end surface part of the bearing plate (80) is set to be connected with the anchor ring (70) and the lower end surface part of the bearing plate (80) is respectively set to be connected with the cap section (30) and the backing plate (60), the leakage circular hole of the bearing plate (80) is set to be connected with the stay cable in the first stay cable group (5),

or the anchor ring (70) is a circular ring-shaped body, the end surface part of the lower end of the anchor ring (70) is connected with the bearing plate (80), the anchor ring (70) is connected with the stay cables in the first stay cable group (5) in a sleeved mode,

or the lower end head of the stay cable in the first stay cable group (5) is connected with the upper end head of the tension screw rod, the tension screw rod is connected with the steel box girder (7) in a penetrating mode, the lower end head of the tension screw rod is arranged to extend to the lower end face part of the steel box girder (7), the tension nut is connected with the tension screw rod in a threaded mode, and the upper end face part of the tension nut is connected with the lower end face part of the steel box girder (7) in a contact mode.

10. A bridge construction method based on combination of a concrete box girder and a steel box girder is characterized in that: the method comprises the following steps:

the method comprises the following steps of respectively driving a pile (1) into a foundation located on one side face of an urban railway business line, installing a bearing platform (2) on the pile (1), pouring concrete mortar on the bearing platform (2) to form a platform part (31), distributing and installing a template of a first inclined strip part (32) and a template of a second inclined strip part (33) on the upper end face part of the platform part (31), pouring concrete mortar on a first section of the first inclined strip part (32) and a first section of the second inclined strip part (33), and setting the ratio of the whole length of the first inclined strip part (32) to the length of the first section of the first inclined strip part (32) to be 1: 0.58-0.67, and the ratio of the overall length of the second taper portion (33) to the length of the first section of the second taper portion (33) is set to 1: 0.58-0.67, after the first section of the first inclined strip portion (32) and the first section of the second inclined strip portion (33) are formed, removing the formwork of the first inclined strip portion (32) and the formwork of the second inclined strip portion (33), respectively installing a temporary supporting beam (101) between the first section of the first inclined strip portion (32) and the bearing platform (2) and between the first section of the second inclined strip portion (33) and the bearing platform (2), respectively injecting high-strength grouting between the first section of the first inclined strip portion (32) and the temporary supporting beam (101) and between the first section of the second inclined strip portion (33) and the temporary supporting beam (101) to form a cushion layer (102), realizing the support of the first section of the first inclined strip portion (32) and the first section of the second inclined strip portion (33), then installing the formwork of the second section of the first inclined strip portion (32) on the first section of the first inclined strip portion (32), and installing the formwork of the second section of the second inclined strip portion (33) on the first section of the second inclined strip portion (33), the second section of the first diagonal strip section (32) and the second section of the second diagonal strip section (33) are subjected to concrete mortar casting to complete the forming of the V-shaped pier (3),

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, and pouring concrete mortar on the core section (20) to complete the installation of the core section (20) and the steel box girder (7),

the column part (82) of the first end pier (8) is driven into the outer side of the pile (1) respectively, the support part (81) of the first end pier (8) is installed on the column part (82) of the first end pier (8), thereby completing the installation of the first end pier (8),

the pile body parts (912) are respectively driven into the foundation on the other side surface of the urban railway business line, the beam parts (911) are installed on the pile body parts (912), thereby completing the installation of the side piers (91),

the column part (82) of the second end pier (9) is driven into the outer side of the pile body part (912) respectively, the support part (81) of the second end pier (9) is installed on the column part (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 support 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 support 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 butted 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 on the concrete box girder (6), so that the first supporting claw part (42) corresponds to the first inclined bar part (32), the second supporting claw part (43) corresponds to the second inclined bar part (33), the open lower groove body (44) corresponds to the open 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 part (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 nails (302) are arranged on the outer cylinder shell (40), the lining shell (50) and the ribbed plates (304), the ribbed plates (304) are arranged on the outer cylinder shell (40) and the lining shell (50), the lower end heads of the steel strands (303) are welded with the steel box girder (7), the outer cylinder shell (40) and the lining shell (50) are arranged on the core section (20), the stay cables of the first stay cable group (5) are penetrated and strung in the anchor ring (70), the bearing plate (80) and the through hole body (602), the stay cables of the first stay cable group (5) pass through a gap between the outer cylinder shell (40) and the lining shell (50), the lower end heads of the stay cables of the first stay cable group (5) are welded with the upper end heads of the tensioning screw rods, the upper end heads of the stay cables of the first stay cable group (5) are connected with the tower head parts (41), and the stay cables of the first stay cable group (5) are tensioned through the rotation of the tensioning screw rods, the upper end head of the steel strand (303) is placed at the upper end port part of the outer cylinder shell (40) and the inner lining shell (50), concrete mortar is injected into a gap between the outer cylinder shell (40) and the inner lining shell (50) to form the filling body (301), so that the filling body (301) is connected with the core section (20), the outer side surface part of the bearing plate (80) is welded with the outer cylinder shell (40), the inner side surface part of the bearing plate (80) is welded with the inner lining shell (50), the lower end surface part of the bearing plate (80) is connected with the filling body (301), and therefore the connection of the stay cable of the first stay cable group (5) and the steel box girder (7) is completed.

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