CN210458974U - Adjustable steel arch frame for deck box type arch bridge construction - Google Patents
Adjustable steel arch frame for deck box type arch bridge construction Download PDFInfo
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- CN210458974U CN210458974U CN201921252620.9U CN201921252620U CN210458974U CN 210458974 U CN210458974 U CN 210458974U CN 201921252620 U CN201921252620 U CN 201921252620U CN 210458974 U CN210458974 U CN 210458974U
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Abstract
The utility model discloses a steel bow member with adjustable bear formula box arched bridge construction is used, include that the pin-connected panel steel bow member that supports is carried out to the arch rib of being under construction, two articulated seats of bow member and horizontal support in the bow member roof beam of the articulated seat bottom of bow member around, pin-connected panel steel bow member include two bow member sections and connect the bearing steel bow member between two bow member sections, and two bow member section bottoms all are provided with a horizontal steel pipe, all are connected with articulated mode between every horizontal steel pipe and the articulated seat of bow member that supports. The utility model has simple structure, reasonable design, simple and convenient use and operation and good use effect, and the transverse steel pipes arranged at the front and the rear ends of the assembled steel arch are connected with the supported arch hinging seats in a hinging way, thereby meeting the deformation requirement of the assembled steel arch; and the assembled steel arch can be simply and conveniently moved out from the position under the constructed arch rib by synchronously pushing the two arch base beams along the transverse bridge, so that the assembled steel arch can be simply and quickly disassembled.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, especially, relate to a steel bow member with adjustable deck box arched bridge construction is used.
Background
The deck arch bridge is a bridge with bridge deck set over the main bearing structure of the bridge span, and the arch abutment transfers the thrust of the end of the arch rib (also called arch end) to the component of the bedrock and is located at the joint between the two ends of the arch bridge and the bedrock. The abutments used to support the ribs are permanent abutments which are typically reinforced earth structures supported on bedrock. When a deck box-type arch bridge with reinforced concrete box girders as arch ribs is constructed, the arch ribs are usually cast-in-place by using steel arches which are pre-erected in place. After the steel bow member erects to put in place and before adopting the steel bow member to pour the construction to the arch rib, for accurately mastering the stress, meeting an emergency and the displacement condition under the influence of factors such as load and temperature of steel bow member, ensure to pour the arch rib safely, smoothly, need carry out the pre-compaction to the steel bow member of erectting to need carry out full section prepressing to the steel bow member, the main aim at of steel bow member pre-compaction lies in: firstly, testing the strength and stability of a steel arch and a support, and eliminating the inelastic deformation of the steel arch before the pouring construction of arch rib concrete, mainly eliminating the settlement deformation of the steel arch and the deformation of each contact part of the steel arch; and secondly, detecting the stress condition and the elastic deformation condition of the steel arch, and measuring the elastic deformation of the steel arch. And after the arch rib is cast and molded, dismantling the steel arch frame.
At present, when the steel arch is erected, construction operation is relatively random, and the steel arch is usually directly fixedly supported on a permanent support of an arch rib. After the steel arch is erected by adopting the method, the steel arch and the permanent support are fixedly connected, and the steel arch is fixed at the fixed position of the permanent support, so that the deformation requirement of the steel arch in the prepressing process can not be met, and the deformation requirement of the steel arch in the arch rib pouring process can not be met. Meanwhile, when the steel arch is dismantled, the steel arch is supported below the arch rib formed by construction, so that the construction space is limited, the steel arch is inconvenient to dismantle, the steel arch is fixed and cannot move, and the using effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the adjustable steel arch center for the construction of the deck box type arch bridge is provided aiming at the defects in the prior art, the adjustable steel arch center has simple structure, reasonable design, simple and convenient use and operation and good use effect, and the transverse steel pipes arranged at the front end and the rear end of the assembled steel arch center are connected with the supported arch center hinge seats in a hinge mode, so that the deformation requirement of the assembled steel arch center can be effectively met; and the assembled steel arch can be simply and conveniently moved out from the position under the constructed arch rib by synchronously pushing the two arch base beams along the transverse bridge, so that the assembled steel arch can be simply and quickly disassembled.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a steel bow member with adjustable construction of deck box arched bridge is with which characterized in that: the assembled steel arch comprises an assembled steel arch for supporting a constructed arch rib, two symmetrically-arranged front and back arch hinging seats and an arch support beam horizontally supported at the bottom of the arch hinging seats, wherein the arch support beam is a transverse distribution beam arranged along a transverse bridge direction, the front and back arch feet of the assembled steel arch are respectively supported on one arch hinging seat, and one arch support beam is arranged below each arch hinging seat; the constructed arch rib is arched and is a reinforced concrete box girder, the assembled steel arch is vertically arranged and is arranged along the longitudinal bridge direction, and the arch hinge seat is horizontally arranged and is arranged along the transverse bridge direction;
the assembled steel arch comprises two arch springing sections which are symmetrically arranged in front and at back and a bearing steel arch connected between the two arch springing sections, and the bearing steel arch and the two arch springing sections are arranged along the longitudinal bridge direction; the bearing steel arch is formed by splicing a plurality of steel arch sections, and the plurality of steel arch sections are laid along the longitudinal bridge from front to back; the lower parts of the load-bearing steel arch and the lower parts of the two arch springing sections and the lower parts of the two steel arch springing sections which are adjacent in the front and back are connected in a hinged mode, and the upper parts of the load-bearing steel arch and the upper parts of the two arch springing sections and the upper parts of the two steel arch springing sections which are adjacent in the front and back are connected through adjustable connecting pieces; the two arch foot sections and the plurality of steel arch frame sections are all steel trusses formed by splicing a plurality of straight rod pieces;
the bottom parts of the two arch springing segments are respectively provided with a transverse steel pipe which is horizontally supported on the arch frame hinge seat, the transverse steel pipes are horizontally arranged and are arranged along the transverse bridge direction, and the transverse steel pipes are round steel pipes; each transverse steel pipe is supported on one arch frame hinge seat, and each transverse steel pipe is connected with the arch frame hinge seat supported by the transverse steel pipe in a hinge mode;
the arch center hinged seat comprises a horizontal supporting seat supported on an arch center beam and a supporting steel plate supported on the horizontal supporting seat, wherein the horizontal supporting seat and the supporting steel plate are horizontally arranged and are arranged along the transverse bridge direction; the cross section of the supporting steel plate is arc-shaped, each transverse steel pipe is supported on one supporting steel plate, each transverse steel pipe and the supporting steel plate supported by the transverse steel pipe are coaxially arranged, and the supporting steel plate is located below the outer side of the supported transverse steel pipe.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: and bolt mounting seats for mounting adjusting bolts are arranged on the upper parts of the two arch springing segments and the upper parts of the front side and the rear side of each steel arch springing segment.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: the arch support beam is a steel box beam welded and fixed at the bottom of the horizontal support seat.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: the steel box girder is formed by splicing front and back symmetrically arranged I-beams which are horizontally arranged and uniformly arranged on the same horizontal plane, and the I-beams are arranged along the transverse bridge direction.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: the horizontal supporting seat comprises an L-shaped support which is supported below the outer side of the supporting steel plate, the cross section of the L-shaped support is L-shaped and is arranged along the transverse bridge direction, the L-shaped support consists of a horizontal bottom plate which is horizontally supported on the arch support beam and a vertical supporting plate which is fixed above the outer side of the horizontal bottom plate, the horizontal bottom plate is connected with the supporting steel plate through a plurality of vertical steel plates which are arranged from outside to inside, the vertical supporting plate is connected with the supporting steel plate through a plurality of transverse steel plates which are arranged from bottom to top, and the transverse steel plates are arranged horizontally; the horizontal bottom plate, the vertical supporting plate, the vertical steel plate and the horizontal steel plate are straight steel plates and are arranged along the transverse bridge direction, the vertical steel plate, the horizontal bottom plate and the supporting steel plate are fixedly connected in a welding mode, and the horizontal steel plate, the vertical supporting plate and the supporting steel plate are fixedly connected in a welding mode.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: horizontal support seat still includes the slant steel sheet, the slant steel sheet leans out gradually and its straight steel sheet to laying for following the cross bridge from top to bottom, the upper portion welded fastening of slant steel sheet is on the supporting steel plate and its bottom welded fastening is in the junction between horizontal bottom plate and vertical support board.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: the arch center hinging seat also comprises a plurality of steel pipe limiting mechanisms for limiting the transverse steel pipes, the steel pipe limiting mechanisms are identical in structure and are arranged from left to right along the transverse bridge, and the steel pipe limiting mechanisms are arranged vertically;
the steel pipe limiting mechanism comprises an arc limiting pressing strip arranged above the inner side of the transverse steel pipe, the arc limiting pressing strip is vertically arranged, the upper end and the lower end of the arc limiting pressing strip are fixed on the horizontal supporting seat, a limiting steel plate strip is padded between the arc limiting pressing strip and the transverse steel pipe, and the cross section of the limiting steel plate strip is arc-shaped and is fixed under the arc limiting pressing strip.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: the arc-shaped limiting pressing strip is a steel bar pressing strip formed by bending a steel bar, and the limiting steel plate strip is formed by bending a rectangular straight steel plate and is welded and fixed on the arc-shaped limiting pressing strip.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: each arch foot section is formed by assembling M arch foot steel trusses, the M arch foot steel trusses are identical in structure and are arranged from left to right along a transverse bridge; wherein M is a positive integer and M is not less than 3;
each arch foot steel truss is a triangular steel truss, each arch foot steel truss comprises a left triangular plane truss and a right triangular plane truss which are symmetrically arranged, the two triangular plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two triangular plane trusses are connected through a plurality of connecting rods; every triangle-shaped plane truss is formed by connecting a lower connecting rod, an upper connecting rod that is located under the connecting rod and a well connecting rod of connecting between lower connecting rod and upper connecting rod, the lower extreme of lower connecting rod and the lower extreme of upper connecting rod are all fixed on horizontal steel pipe, be connected through well connecting rod between the upper end of lower connecting rod and the upper end of upper connecting rod.
The adjustable steel arch center for the construction of the deck box type arch bridge is characterized in that: each steel arch frame segment is formed by splicing M arched steel trusses, the M arched steel trusses are identical in structure and are distributed from left to right along a transverse bridge;
the two adjacent arch foot steel trusses of each arch foot section and the two adjacent arch steel trusses of each steel arch frame section are fixedly connected into a whole through transverse connecting frames;
each arched steel truss comprises a left arched plane truss and a right arched plane truss which are symmetrically arranged, the two arched plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two arched plane trusses are connected through a plurality of connecting rods; each arched plane truss is formed by connecting a lower chord, an upper chord positioned right above the lower chord and a plurality of web members connected between the lower chord and the upper chord.
Compared with the prior art, the utility model has the following advantage:
1. simple structure, reasonable in design and input construction cost are lower.
2. The adopted arch center hinging seat has the advantages of simple structure, reasonable design, simple and convenient processing and lower investment cost.
3. The articulated seat of bow member that adopts uses easy and simple to handle and excellent in use effect, the articulated seat of bow member comprises a horizontal support seat and a supporting steel plate, supports both ends respectively on the articulated seat of bow member around with pin-connected panel steel bow member, both ends all are provided with a horizontal steel pipe around the pin-connected panel steel bow member, and connect with articulated mode between horizontal steel pipe and the articulated seat of bow member that supports, can effectively satisfy the deformation demand of pin-connected panel steel bow member like this.
4. The use effect is good, the practical value is high, the assembled steel arch support is stable and reliable, each arch hinging seat is stably supported through one arch support beam, and the assembled steel arch can be simply and conveniently pushed to move along the transverse bridge by synchronously pushing the two arch support beams along the transverse bridge, so that the assembled steel arch can be conveniently shifted out from the position under the constructed arch rib, and the assembled steel arch can be conveniently and quickly disassembled.
In summary, the utility model has simple structure, reasonable design, simple and convenient use and operation and good use effect, the transverse steel pipes arranged at the front and back ends of the assembled steel arch are connected with the supported arch hinging seats in a hinging way, and the deformation requirement of the assembled steel arch can be effectively met; and the assembled steel arch can be simply and conveniently moved out from the position under the constructed arch rib by synchronously pushing the two arch base beams along the transverse bridge, so that the assembled steel arch can be simply and quickly disassembled.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the arch springing segment, the arch frame hinged seat and the arch frame beam of the present invention.
Fig. 3 is the structural schematic diagram of the arch center hinging seat and the transverse steel pipe of the present invention.
Fig. 4 is a schematic structural view of the arch frame hinge seat of the present invention.
Fig. 5 is a schematic structural view of the horizontal support seat of the present invention.
Fig. 6 is a schematic structural diagram of the steel pipe limiting mechanism of the present invention.
Fig. 7 is a schematic view of the transverse bridge structure of the bearing steel arch of the present invention.
Fig. 8 is a schematic view of the longitudinal bridge structure of the arch springing segment of the present invention.
Fig. 9 is a schematic view of the longitudinal bridge connection between the arch springing segment and the steel arch frame segment according to the present invention.
Fig. 10 is a schematic plan view of the assembled steel arch of the present invention.
Description of reference numerals:
1-assembled steel arch centering; 1-arch leg segment; 1-11-transverse steel tube;
1-12-lower connecting rod; 1-13-upper connecting rod; 1-14-middle connecting rod;
1-2-steel arch segment; 1-21-lower chord; 1-22-upper chord;
1-23-web member; 2-the arch center is hinged with the base; 2-1-supporting steel plate;
2-horizontal floor; 2-3-vertical support plate; 2-4-vertical steel plates;
2-5-transverse steel plate; 2-6-oblique steel plates; 2-7, arc limiting and pressing strips;
2-8-limiting steel plate strips; 3-an arch support beam; 4-adjusting the bolt;
5, mounting a bolt; 6-lower ear plate; 7-upper ear plate;
8-horizontal connecting bolt; 9-horizontal articulated shaft; a;
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 10, the present invention includes an assembled steel arch 1 for supporting the arch rib to be constructed, two symmetrically arranged arch hinge seats 2 at the front and the back, and an arch beam 3 horizontally supported at the bottom of the arch hinge seat 2, wherein the arch beam 3 is a transverse distribution beam arranged along the transverse bridge direction, the two arch legs at the front and the back of the assembled steel arch 1 are respectively supported on one arch hinge seat 2, and one arch beam 3 is installed below each arch hinge seat 2; the constructed arch rib is arched and is a reinforced concrete box girder, the assembled steel arch frame 1 is vertically arranged and is arranged along the longitudinal bridge direction, and the arch frame hinge seat 2 is horizontally arranged and is arranged along the transverse bridge direction;
as shown in fig. 8 and 9, the assembled steel arch 1 includes two front and rear symmetrically arranged arch springing sections 1-1 and a bearing steel arch connected between the two arch springing sections 1-1, and the bearing steel arch and the two arch springing sections 1-1 are arranged along a longitudinal bridge direction; the bearing steel arch is formed by splicing a plurality of steel arch sections 1-2, and the plurality of steel arch sections 1-2 are laid along the longitudinal bridge from front to back; the lower part of the load-bearing steel arch and the lower parts of the two arch springing sections 1-1 and the lower parts of the two steel arch springing sections 1-2 which are adjacent in the front and back are connected in an articulated manner, and the upper part of the load-bearing steel arch and the upper parts of the two arch springing sections 1-1 and the upper parts of the two steel arch springing sections 1-2 which are adjacent in the front and back are connected through adjustable connecting pieces; the two arch springing segments 1-1 and the plurality of steel arch frame segments 1-2 are steel trusses spliced by a plurality of straight rod pieces;
the bottom parts of the two arch springing sections 1-1 are respectively provided with a transverse steel pipe 1-11 horizontally supported on the arch frame hinge seat 2, the transverse steel pipes 1-11 are horizontally arranged and are arranged along the transverse bridge direction, and the transverse steel pipes 1-11 are round steel pipes; each transverse steel pipe 1-11 is supported on one arch frame hinge seat 2, and each transverse steel pipe 1-11 is connected with the arch frame hinge seat 2 supported by the transverse steel pipe in a hinge mode;
as shown in fig. 4 and 5, the arch frame hinge seat 2 includes a horizontal support seat supported on the arch frame beam 3 and a support steel plate 2-1 supported on the horizontal support seat, wherein the horizontal support seat and the support steel plate 2-1 are both horizontally arranged and are both arranged along the transverse bridge direction; the cross section of the supporting steel plate 2-1 is arc-shaped, each transverse steel pipe 1-11 is supported on one supporting steel plate 2-1, each transverse steel pipe 1-11 and the supporting steel plate 2-1 supported by the transverse steel pipe 1-11 are coaxially arranged, and the supporting steel plate 2-1 is located below the outer side of the supporting transverse steel pipe 1-11.
In this embodiment, the straight rod is a straight steel pipe.
The constructed arch rib is an arch rib of a deck box type arch bridge, and the arch rib is a reinforced concrete box girder.
In this embodiment, the front and rear two arch springing segments 1-1 and the plurality of steel arch segments 1-2 in the assembled steel arch 1 are uniformly distributed on the same vertical plane.
In order to facilitate connection and disassembly, the lower parts of the bearing steel arch and the lower parts of the two arch springing sections 1-1 and the lower parts of the two front and rear adjacent steel arch sections 1-2 are connected through horizontal hinge shafts 9, and the horizontal hinge shafts 9 are arranged along the transverse bridge direction.
As shown in fig. 8 and 9, the upper portions of the two arch springing segments 1-1 and the upper portions of the front and rear sides of each steel arch segment 1-2 are provided with bolt installation seats 5 for installing adjusting bolts 4. In this embodiment, the distance between the upper part of the load-bearing steel arch and the upper parts of the two arch springing segments 1-1 and the distance between the upper parts of the two adjacent steel arch segments 1-2 in the front and back are adjusted by adjusting bolts 4.
For firm fixation and stable support, the arch support beam 3 is a steel box beam welded and fixed at the bottom of the horizontal support seat.
In this embodiment, the steel box girder is formed by splicing two I-beams symmetrically arranged in front and back, the two I-beams are horizontally arranged and uniformly arranged on the same horizontal plane, and the two I-beams are arranged along the transverse bridge direction.
As shown in fig. 5, the horizontal support seat comprises an L-shaped support seat supported below the outer side of a support steel plate 2-1, the cross section of the L-shaped support seat is L-shaped and is arranged along the transverse bridge direction, the L-shaped support seat is composed of a horizontal bottom plate 2-2 horizontally supported on an arch support beam 3 and a vertical support plate 2-3 fixed above the outer side of the horizontal bottom plate 2-2, the horizontal bottom plate 2-2 is connected with the support steel plate 2-1 through a plurality of vertical steel plates 2-4 arranged from outside to inside, the vertical support plate 2-3 is connected with the support steel plate 2-1 through a plurality of transverse steel plates 2-5 arranged from bottom to top, and the transverse steel plates 2-5 are arranged horizontally; the horizontal bottom plate 2-2, the vertical supporting plate 2-3, the vertical steel plate 2-4 and the horizontal steel plate 2-5 are straight steel plates and are arranged along the horizontal bridge direction, the vertical steel plate 2-4, the horizontal bottom plate 2-2 and the supporting steel plate 2-1 are fixedly connected in a welding mode, and the horizontal steel plate 2-5, the vertical supporting plate 2-3 and the supporting steel plate 2-1 are fixedly connected in a welding mode.
In the embodiment, the number of the vertical steel plates 2-4 and the number of the horizontal steel plates 2-5 in the horizontal supporting seat are two. During actual processing, the number of the vertical steel plates 2-4 and the number of the horizontal steel plates 2-5 in the horizontal supporting seat and the arrangement positions of the vertical steel plates 2-4 and the horizontal steel plates 2-5 can be respectively adjusted according to specific requirements.
Simultaneously, horizontal support seat still includes oblique steel sheet 2-6, oblique steel sheet 2-6 from top to bottom leans out gradually and it is along the straight steel sheet of laying to the cross bridge, oblique steel sheet 2-6's upper portion welded fastening is on supporting steel sheet 2-1 and its bottom welded fastening is in the junction between horizontal floor 2-2 and vertical support plate 2-3.
As shown in fig. 6, in order to ensure that the assembled steel arch 1 can be stably and stably supported on the arch hinge base 2, the arch hinge base 2 further comprises a plurality of steel pipe limiting mechanisms for limiting transverse steel pipes 1 to 11, the plurality of steel pipe limiting mechanisms are identical in structure and are arranged from left to right along a transverse bridge direction, and the plurality of steel pipe limiting mechanisms are arranged vertically;
the steel pipe limiting mechanism comprises arc limiting pressing strips 2-7 arranged above the inner sides of transverse steel pipes 1-11, the arc limiting pressing strips 2-7 are vertically arranged, the upper ends and the lower ends of the arc limiting pressing strips are fixed on the horizontal supporting seat, limiting steel plate strips 2-8 are padded between the arc limiting pressing strips 2-7 and the transverse steel pipes 1-11, and the cross sections of the limiting steel plate strips 2-8 are arc-shaped and fixed under the arc limiting pressing strips 2-7.
In this embodiment, the arc-shaped limiting pressing strips 2 to 7 are reinforcing steel bar pressing strips formed by bending a reinforcing steel bar, and the limiting steel plate strips 2 to 8 are formed by bending a rectangular straight steel plate and are welded and fixed on the arc-shaped limiting pressing strips 2 to 7.
For simple and convenient fixing, the upper section of the arc-shaped limiting pressing strip 2-7 is an upper connecting section, the lower section of the arc-shaped limiting pressing strip is a lower connecting section, a lower lug plate 6 for fixing the lower connecting section is fixedly welded on the horizontal bottom plate 2-2, an upper lug plate 7 for fixing the upper connecting section is fixedly welded on the inner side of the upper part of the vertical supporting plate 2-3, and the lower lug plate 6 and the upper lug plate 7 are straight steel plates which are vertically arranged. When the steel tube is actually fixed, the upper connecting section and the upper lug plate 7 and the lower connecting section and the lower lug plate 6 are fixedly connected through the horizontal connecting bolts 8, so that the steel tube limiting mechanism is simple and convenient to connect and convenient to disassemble and assemble, the transverse steel tubes 1-11 can be effectively limited through the steel tube limiting mechanism, the transverse steel tubes 1-11 are prevented from being separated from the horizontal supporting seat, and the supporting stability of the transverse steel tubes 1-11 is ensured; meanwhile, the steel pipe limiting mechanism cannot limit the transverse steel pipe 1-11 to rotate on the supporting steel plate 2-1.
As shown in fig. 8, each of the arch foot segments 1-1 is formed by splicing M arch foot steel trusses, which have the same structure and are arranged from left to right along a transverse bridge; wherein M is a positive integer and M is not less than 3;
each arch foot steel truss is a triangular steel truss, each arch foot steel truss comprises a left triangular plane truss and a right triangular plane truss which are symmetrically arranged, the two triangular plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two triangular plane trusses are connected through a plurality of connecting rods; each triangular plane truss is formed by connecting a lower connecting rod 1-12, an upper connecting rod 1-13 positioned right above the lower connecting rod 1-12 and a middle connecting rod 1-14 connected between the lower connecting rod 1-12 and the upper connecting rod 1-13, the lower end of the lower connecting rod 1-12 and the lower end of the upper connecting rod 1-13 are fixed on a transverse steel pipe 1-11, and the upper end of the lower connecting rod 1-12 is connected with the upper end of the upper connecting rod 1-13 through the middle connecting rod 1-14.
In the embodiment, the lower connecting rods 1-12, the upper connecting rods 1-13 and the middle connecting rods 1-14 are all straight steel tubes, the lower ends of the lower connecting rods 1-12 and the lower ends of the upper connecting rods 1-13 are all welded and fixed on the transverse steel tubes 1-11, and the middle connecting rods 1-14, the lower connecting rods 1-12 and the upper connecting rods 1-13 are all fixedly connected in a welding mode. The connecting rods are straight steel pipes and are fixedly connected with the triangular plane truss in a welding mode.
As shown in fig. 7 and 9, each steel arch segment 1-2 is formed by splicing M arched steel trusses, which have the same structure and are arranged from left to right along a transverse bridge;
the two adjacent arch foot steel trusses of each arch foot section 1-1 and the two adjacent arch steel trusses of each steel arch frame section 1-2 are fixedly connected into a whole through transverse connecting frames;
each arched steel truss comprises a left arched plane truss and a right arched plane truss which are symmetrically arranged, the two arched plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two arched plane trusses are connected through a plurality of connecting rods; each arched plane truss is formed by connecting a lower chord 1-21, an upper chord 1-22 positioned right above the lower chord 1-21 and a plurality of web members 1-23 connected between the lower chord 1-21 and the upper chord 1-22.
In this embodiment, M is 5.
During actual processing, the value of M can be adjusted correspondingly according to specific requirements.
In this embodiment, the lower chords 1 to 21, the upper chords 1 to 22 and the web members 1 to 23 are all straight steel plates, and the web members 1 to 23, the lower chords 1 to 21 and the upper chords 1 to 22 are all fixedly connected in a welding manner. The connecting rod piece is a straight steel pipe and is fixedly connected with the arched plane truss in a welding mode.
In this embodiment, each of the lower connecting rods 1 to 12 is connected to its adjacent lower chord 1 to 21 and to the adjacent two lower chords 1 to 21 through a horizontal hinge shaft 9, and each of the upper connecting rods 1 to 13 is connected to its adjacent upper chord 1 to 22 and to the adjacent two upper chords 1 to 22 through the adjustable connecting member, and the adjustable connecting members are arranged along the longitudinal bridge direction.
During actual use, the front end and the rear end of the assembled steel arch centering 1 are respectively supported on one arch centering hinged seat 2, the front end and the rear end of the assembled steel arch centering 1 are respectively provided with one transverse steel pipe 1-11, and the transverse steel pipes 1-11 are connected with the supported arch centering hinged seat 2 in a hinged mode, so that the deformation requirement of the assembled steel arch centering 1 can be effectively met. And, each of the arch hinge bases 2 is stably supported by one arch beam 3. In the actual construction process, the two arch support beams 3 are synchronously pushed along the transverse bridge direction, so that the assembled steel arch 1 can be simply and conveniently pushed to move along the transverse bridge direction, and the assembled steel arch 1 can be moved out from the position under the constructed arch rib, so that the assembled steel arch 1 can be simply and conveniently and quickly dismantled.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (10)
1. The utility model provides a steel bow member with adjustable construction of deck box arched bridge is with which characterized in that: the steel arch truss comprises an assembled steel arch truss (1) for supporting a constructed arch rib, two arch truss hinged seats (2) symmetrically arranged at the front and the rear, and an arch truss beam (3) horizontally supported at the bottom of the arch truss hinged seat (2), wherein the arch truss beam (3) is a transverse distribution beam arranged along the transverse bridge direction, the front and the rear arch feet of the assembled steel arch truss (1) are respectively supported on one arch truss hinged seat (2), and one arch truss beam (3) is arranged below each arch truss hinged seat (2); the constructed arch rib is arched and is a reinforced concrete box girder, the assembled steel arch frame (1) is vertically arranged and is arranged along the longitudinal bridge direction, and the arch frame hinging seat (2) is horizontally arranged and is arranged along the transverse bridge direction;
the assembled steel arch (1) comprises two arch foot sections (1-1) which are symmetrically arranged in front and back and a bearing steel arch connected between the two arch foot sections (1-1), and the bearing steel arch and the two arch foot sections (1-1) are arranged along the longitudinal bridge direction; the bearing steel arch is formed by splicing a plurality of steel arch sections (1-2), and the plurality of steel arch sections (1-2) are arranged from front to back along the longitudinal bridge; the lower part of the load-bearing steel arch and the lower parts of the two arch springing sections (1-1) and the lower parts of the two steel arch springing sections (1-2) which are adjacent in the front and back are connected in an articulated manner, and the upper part of the load-bearing steel arch and the upper parts of the two arch springing sections (1-1) and the upper parts of the two steel arch springing sections (1-2) which are adjacent in the front and back are connected through adjustable connecting pieces; the two arch springing segments (1-1) and the plurality of steel arch frame segments (1-2) are all steel trusses assembled by a plurality of straight rod pieces;
the bottom parts of the two arch springing segments (1-1) are respectively provided with a transverse steel pipe (1-11) which is horizontally supported on the arch frame hinged seat (2), the transverse steel pipes (1-11) are horizontally arranged and are arranged along the transverse bridge direction, and the transverse steel pipes (1-11) are round steel pipes; each transverse steel pipe (1-11) is supported on one arch frame hinge seat (2), and each transverse steel pipe (1-11) is connected with the arch frame hinge seat (2) supported by the transverse steel pipe in a hinge mode;
the arch center hinged seat (2) comprises a horizontal supporting seat supported on an arch center beam (3) and a supporting steel plate (2-1) supported on the horizontal supporting seat, wherein the horizontal supporting seat and the supporting steel plate (2-1) are horizontally arranged and are arranged along the transverse bridge direction; the cross section of the supporting steel plate (2-1) is arc-shaped, each transverse steel pipe (1-11) is supported on one supporting steel plate (2-1), each transverse steel pipe (1-11) and the supporting steel plate (2-1) supported by the transverse steel pipe are coaxially arranged, and the supporting steel plate (2-1) is located below the outer side of the supported transverse steel pipe (1-11).
2. The adjustable steel arch for the construction of the deck box-type arch bridge as claimed in claim 1, wherein: and bolt mounting seats (5) for mounting adjusting bolts (4) are arranged on the upper parts of the two arch springing segments (1-1) and the upper parts of the front side and the rear side of each steel arch springing segment (1-2).
3. The adjustable steel arch for the construction of a deck box-type arch bridge according to claim 1 or 2, wherein: the arch support beam (3) is a steel box beam fixed at the bottom of the horizontal support seat in a welding manner.
4. The adjustable steel arch for the construction of the deck box-type arch bridge as claimed in claim 3, wherein: the steel box girder is formed by splicing front and back symmetrically arranged I-beams which are horizontally arranged and uniformly arranged on the same horizontal plane, and the I-beams are arranged along the transverse bridge direction.
5. The adjustable steel arch for the construction of a deck box-type arch bridge according to claim 1 or 2, wherein: the horizontal supporting seat comprises an L-shaped supporting seat supported below the outer side of a supporting steel plate (2-1), the cross section of the L-shaped supporting seat is L-shaped and is arranged along the transverse bridge direction, the L-shaped supporting seat consists of a horizontal bottom plate (2-2) horizontally supported on an arch support beam (3) and a vertical supporting plate (2-3) fixed above the outer side of the horizontal bottom plate (2-2), the horizontal bottom plate (2-2) and the supporting steel plate (2-1) are connected through a plurality of vertical steel plates (2-4) arranged from outside to inside, the vertical supporting plate (2-3) and the supporting steel plate (2-1) are connected through a plurality of transverse steel plates (2-5) arranged from bottom to top, and the transverse steel plates (2-5) are arranged horizontally; the horizontal bottom plate (2-2), the vertical supporting plate (2-3), the vertical steel plate (2-4) and the horizontal steel plate (2-5) are straight steel plates and are arranged along the horizontal bridge direction, the vertical steel plate (2-4), the horizontal bottom plate (2-2) and the supporting steel plate (2-1) are fixedly connected in a welding mode, and the horizontal steel plate (2-5), the vertical supporting plate (2-3) and the supporting steel plate (2-1) are fixedly connected in a welding mode.
6. The adjustable steel arch for the construction of the deck box-type arch bridge according to claim 5, wherein: horizontal support seat still includes slant steel sheet (2-6), slant steel sheet (2-6) lean out gradually and it is to the straight steel sheet of laying along the horizontal bridge from top to bottom, the upper portion welded fastening of slant steel sheet (2-6) is on supporting steel sheet (2-1) and its bottom welded fastening is in the junction between horizontal floor (2-2) and vertical support board (2-3).
7. The adjustable steel arch for the construction of a deck box-type arch bridge according to claim 1 or 2, wherein: the arch center hinging seat (2) also comprises a plurality of steel pipe limiting mechanisms for limiting the transverse steel pipes (1-11), the steel pipe limiting mechanisms are identical in structure and are arranged from left to right along the transverse bridge, and the steel pipe limiting mechanisms are arranged vertically;
the steel pipe limiting mechanism comprises arc-shaped limiting pressing strips (2-7) arranged above the inner sides of the transverse steel pipes (1-11), the arc-shaped limiting pressing strips (2-7) are vertically arranged, the upper ends and the lower ends of the arc-shaped limiting pressing strips are fixed on the horizontal supporting seat, limiting steel plate strips (2-8) are padded between the arc-shaped limiting pressing strips (2-7) and the transverse steel pipes (1-11), and the cross sections of the limiting steel plate strips (2-8) are arc-shaped and fixed under the arc-shaped limiting pressing strips (2-7).
8. The adjustable steel arch for the construction of the deck box-type arch bridge as recited in claim 7, wherein: the arc-shaped limiting pressing strips (2-7) are steel bar pressing strips formed by bending a steel bar, and the limiting steel plate strips (2-8) are formed by bending a rectangular straight steel plate and are welded and fixed on the arc-shaped limiting pressing strips (2-7).
9. The adjustable steel arch for the construction of a deck box-type arch bridge according to claim 1 or 2, wherein: each arch foot section (1-1) is formed by splicing M arch foot steel trusses, the M arch foot steel trusses are identical in structure and are arranged from left to right along a transverse bridge; wherein M is a positive integer and M is not less than 3;
each arch foot steel truss is a triangular steel truss, each arch foot steel truss comprises a left triangular plane truss and a right triangular plane truss which are symmetrically arranged, the two triangular plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two triangular plane trusses are connected through a plurality of connecting rods; each triangular plane truss is formed by connecting a lower connecting rod (1-12), an upper connecting rod (1-13) positioned right above the lower connecting rod (1-12) and a middle connecting rod (1-14) connected between the lower connecting rod (1-12) and the upper connecting rod (1-13), the lower end of the lower connecting rod (1-12) and the lower end of the upper connecting rod (1-13) are fixed on a transverse steel pipe (1-11), and the upper end of the lower connecting rod (1-12) and the upper end of the upper connecting rod (1-13) are connected through the middle connecting rod (1-14).
10. The adjustable steel arch for the construction of the deck box-type arch bridge as claimed in claim 9, wherein: each steel arch frame segment (1-2) is formed by splicing M arched steel trusses, the structures of the M arched steel trusses are identical, and the M arched steel trusses are distributed from left to right along a transverse bridge;
two adjacent arch foot steel trusses of each arch foot segment (1-1) and two adjacent arch steel trusses of each steel arch frame segment (1-2) are fixedly connected into a whole through a transverse connecting frame;
each arched steel truss comprises a left arched plane truss and a right arched plane truss which are symmetrically arranged, the two arched plane trusses are vertically arranged and are arranged along the longitudinal bridge direction, and the two arched plane trusses are connected through a plurality of connecting rods; each arched plane truss is formed by connecting a lower chord (1-21), an upper chord (1-22) positioned right above the lower chord (1-21) and a plurality of web members (1-23) connected between the lower chord (1-21) and the upper chord (1-22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921252620.9U CN210458974U (en) | 2019-08-05 | 2019-08-05 | Adjustable steel arch frame for deck box type arch bridge construction |
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| CN201921252620.9U CN210458974U (en) | 2019-08-05 | 2019-08-05 | Adjustable steel arch frame for deck box type arch bridge construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893860A (en) * | 2020-07-03 | 2020-11-06 | 中国葛洲坝集团路桥工程有限公司 | Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof |
| CN115262980A (en) * | 2022-06-28 | 2022-11-01 | 宣城市政建设集团有限公司 | Steel bar framework convenient for position adjustment and adjusting method thereof |
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2019
- 2019-08-05 CN CN201921252620.9U patent/CN210458974U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893860A (en) * | 2020-07-03 | 2020-11-06 | 中国葛洲坝集团路桥工程有限公司 | Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof |
| CN111893860B (en) * | 2020-07-03 | 2022-03-08 | 中国葛洲坝集团路桥工程有限公司 | Reinforced Bailey sheet steel arch center connecting structure and assembling and connecting method thereof |
| CN115262980A (en) * | 2022-06-28 | 2022-11-01 | 宣城市政建设集团有限公司 | Steel bar framework convenient for position adjustment and adjusting method thereof |
| CN115262980B (en) * | 2022-06-28 | 2024-06-04 | 宣城市政建设集团有限公司 | Reinforcement skeleton convenient for position adjustment and adjustment method thereof |
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