CN112502025B - Segment bolted rigid frame bridge and construction method thereof - Google Patents
Segment bolted rigid frame bridge and construction method thereof Download PDFInfo
- Publication number
- CN112502025B CN112502025B CN202011344145.5A CN202011344145A CN112502025B CN 112502025 B CN112502025 B CN 112502025B CN 202011344145 A CN202011344145 A CN 202011344145A CN 112502025 B CN112502025 B CN 112502025B
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- section
- plate
- girder
- precast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 abstract description 9
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种节段栓接的刚构桥梁，包括若干预制主梁节段、墩柱、预制横梁，两个相邻的预制主梁节段通过预制横梁栓接，该墩柱插入预制横梁中形成暗横梁结构。通过将盖梁藏入主梁结构中，降低了建筑高度，提高了美感，且将该暗横梁结构制成钢预制件，吊重较小，现场施工便捷。预制横梁内部设置槽孔，槽孔内设置横梁剪力连接件，将墩柱的伸入段插入槽孔并通过高强混凝土浆实现墩柱与盖梁的刚接，利用体系优势降低了结构的用钢量，节省了造价。同时公开一种施工方式，将主梁结构主要的制造放在了预制厂，有利于保证工程质量，适用于较大跨径的钢混组合梁，且有利于充分发挥钢混组合梁的结构优势，具有良好的技术经济效益及广阔的应用前景。
The present invention discloses a segment-bolted rigid frame bridge, comprising a plurality of prefabricated main beam segments, piers, and prefabricated cross beams. Two adjacent prefabricated main beam segments are bolted together by prefabricated cross beams, and the piers are inserted into the prefabricated cross beams to form a hidden cross beam structure. By hiding the cap beam in the main beam structure, the building height is reduced and the aesthetics is improved. The hidden cross beam structure is made into a steel prefabricated part, which has a small lifting weight and is convenient for on-site construction. Slot holes are arranged inside the prefabricated cross beams, and cross beam shear connectors are arranged in the slot holes. The extended section of the pier column is inserted into the slot hole, and the rigid connection between the pier column and the cap beam is achieved through high-strength concrete slurry. The advantages of the system are utilized to reduce the steel consumption of the structure and save the construction cost. At the same time, a construction method is disclosed, in which the main manufacturing of the main beam structure is placed in the prefabrication plant, which is conducive to ensuring the quality of the project, is suitable for steel-concrete composite beams with larger spans, and is conducive to giving full play to the structural advantages of the steel-concrete composite beams, and has good technical and economic benefits and broad application prospects.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a rigid frame bridge bolted by sections and a construction method thereof.
Background
The traditional cast-in-situ construction of the urban bridge is easy to cause sudden drop of the traffic capacity of the construction area, influences the smoothness and safety of the road, and has the defects of large field operation amount, low construction efficiency, high overall energy consumption and serious disturbance. The assembled bridge can obviously accelerate the construction progress, reduce the interference to the existing traffic and is beneficial to environmental protection through the industrialized manufacturing and assembled construction of the components.
In the assembled bridge, the steel-concrete composite beam is easy to design into an assembled member, and the steel-concrete composite beam exerts the respective material advantages of steel and concrete, so that the assembled bridge is a bridge structure with strong competitiveness. The design method of the assembled steel-concrete combined continuous beam commonly used at the present stage is to set the main beam as a longitudinal sectional member, and a capping beam structure with larger height is required to be set, so that the structural height is increased, the construction cost is increased, and the aesthetic feeling is reduced.
Disclosure of Invention
The invention aims to provide a rigid frame bridge with a bolted section and a construction method thereof, which are used for solving the problem that a capping beam structure with a larger height needs to be arranged.
The technical scheme adopted for solving the technical problems is that the rigid frame bridge with the bolted sections comprises:
The precast girder segment comprises a girder top plate, a girder bottom plate, a girder web plate, a concrete plate and a plurality of top plate shear connectors, wherein the concrete plate is arranged above the girder top plate, the top plate shear connectors are welded on the girder top plate and connect the concrete plate and the girder top plate into a whole, and the girder web plate is arranged between the girder top plate and the girder bottom plate;
A pier column with an extending section arranged above the pier column, and
The precast beam comprises a beam top plate, a beam bottom plate, a beam web and a hole wall steel plate, wherein the precast beam is arranged above the pier column, the precast beam is provided with a main beam extension section and is used for being connected with the precast end section and the precast middle beam section to form a main beam structure, the beam bottom plate is provided with an opening, the hole wall steel plate is arranged between the beam webs, a slot hole is formed between the hole wall steel plate and the beam web, the slot hole is positioned outside the section of the main beam web, the extension section is inserted into the slot hole, a beam shear connector is arranged in the slot hole, the beam top plate is provided with a grouting hole, the upper end of the pier column is provided with a steel rib plate, the steel rib plate is transversely arranged and is inserted through the slot hole, the precast beam and the pier column are connected through high-strength concrete slurry, the precast main beam section can be divided into the precast end section and the precast middle beam section, the main beam top plate and the beam top plate are bolted, the main beam web and the main beam bottom plate are bolted, and the beam bottom plate are bolted;
The prefabricated end section is divided into a prefabricated end section a and a prefabricated end section b, the prefabricated middle beam section is divided into a prefabricated middle beam section a and a prefabricated middle beam section b, wherein the prefabricated end section b and the prefabricated middle beam section a are connected with the prefabricated cross beam, a longitudinal connecting section a is formed by connecting sections between the prefabricated end section b and the prefabricated cross beam, and a longitudinal connecting section b is formed by connecting sections between the prefabricated end section a and the prefabricated end section b, and between the prefabricated middle beam section a and the prefabricated middle beam section b;
The adjacent girder top plate, girder bottom plate and girder web plate among the longitudinal connecting sections b are mutually butted and connected through bolt fastening.
The hidden beam structure has the advantages that the hidden beam structure is formed by hiding the capping beam into the main beam structure, the building height is reduced, the aesthetic feeling is improved, the hidden beam structure is made into a steel prefabricated member, the hanging weight is small, the site construction is convenient and fast, the slot holes are formed in the prefabricated beam, the beam shear connectors are arranged in the slot holes, the pier column overhanging reinforcing steel bars are inserted into the slot holes, the rigid connection of the pier column and the capping beam is realized through high-strength concrete slurry, the steel consumption of the structure is reduced by utilizing the system advantage, and the manufacturing cost is saved. The transverse bridge position of the pier column is positioned between the main beams, so that complex node design between the pier column and the main beams and between the pier column and the cross beams is avoided, the arrangement is flexible, and the transverse position of the pier column can be adjusted according to the actual condition of the site. And the prefabricated girder sections are bolted with each other by adopting the sections, so that the welding quality problem possibly caused by bottom plate overhead welding is avoided.
Further, the pier stud is provided in a rectangular structure, and the length of the protruding section should not be less than 1.2 times the dimension of the long side of the pier stud.
Further, the abutment is provided in a cylindrical configuration, and the protruding section is provided in a circular or rectangular shape, and the length thereof should not be less than 1.2 times the diameter of the abutment.
Further, the transverse bridge of the pier stud is provided with a supporting lug, a support is arranged above the supporting lug, and a support stiffening rib is arranged inside the prefabricated transverse beam above the support.
Further, the girder web plate and the beam web plate are collectively called a web plate, the girder bottom plate and the beam bottom plate are collectively called a bottom plate, and the girder top plate and the beam top plate are collectively called a top plate;
A first splice plate is arranged between the bottom plates and the webs between the adjacent sections and is connected with each other through high-strength bolts, a second splice plate is arranged between the top plates between the adjacent sections and is connected with each other through high-strength bolts, the first splice plate is a common flat splice plate, the second splice plate comprises a horizontal plate and a plurality of vertical plates, the high-strength bolts penetrate through the top plates and the horizontal plates to be connected with the top plates between the adjacent sections into a whole, transverse steel bars penetrate through the vertical plates to enable concrete plates in the range of the longitudinal connecting sections to be connected with the top plates into a whole, and the connection of adjacent girder structures is realized at the transverse connecting sections through wet joints of the transverse connecting sections;
The floor area of the girder structure near the pier stud is provided with a floor shear connector that is covered with beam bottom concrete to form a concrete reinforcing layer.
Further, a reserved section is arranged on one side of the prefabricated end section b close to the prefabricated beam.
Further, small cross beams are arranged between the prefabricated main beam sections.
A construction method of a rigid frame bridge with a bolted section comprises the following steps:
s1, manufacturing a prefabricated cross beam, a prefabricated end section a, a prefabricated end section b, a prefabricated middle beam section a and a prefabricated middle beam section b;
S2, pouring or hoisting pier columns, installing supports on the supporting lugs, hoisting prefabricated cross beams, inserting the extending sections of the pier columns into slotted holes in the prefabricated cross beams, and pouring reinforced plates which are transversely arranged and inserted through the slotted holes through high-strength concrete slurry to realize connection;
s3, hoisting temporary piers below the longitudinal connecting sections a and b, and pouring beam bottom concrete between the sections by adopting full-bolt connection and fixation;
s4, removing the temporary pier;
S5, pouring wet joints of the longitudinal connecting section b and wet joints of the transverse connecting section;
S6, pouring a reserved section of the b section of the prefabricated end part and a concrete layer at the top of the prefabricated beam to form a hogging moment area wet joint, and applying a certain weight if necessary;
S7, constructing bridge decks and auxiliary facilities.
The main girder structure is mainly manufactured in a prefabrication factory, so that the engineering quality is guaranteed, the girder structure is suitable for steel-concrete composite girders with larger span, the structural advantage of the steel-concrete composite girders is fully exerted, and the girder structure has good technical and economic benefits and wide application prospect.
Further, in step S1, when the prefabricated middle beam b section is manufactured, the beam tops at the two ends of the prefabricated middle beam b section are fixed by using the reaction frames, the bottom of the prefabricated middle beam b section is provided with the jack and applies the jacking force, after the jacking force reaches a preset value, the prefabricated middle beam b section is replaced by the span middle beam bottom support, and then the concrete slab at the top is poured.
Further, a reinforcing rib is provided on the bottom plate of the b-section of the precast middle beam.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a segment sectional view of a prefabricated main beam segment sub-division;
FIG. 2 is a schematic side view of a slot hole;
FIG. 3 is a side view of the main beam;
FIG. 4 is a top view of a segment bolted steel reinforced concrete composite rigid frame system;
FIG. 5 is a schematic cross-sectional view of a pier stud;
fig. 6 is a schematic cross-sectional view at a small cross-sectional area.
Detailed Description
Referring to fig. 1 to 6, a rigid frame bridge with bolted segments comprises a plurality of prefabricated girder segments 1, pier studs 3 and prefabricated beams 2, wherein two adjacent prefabricated girder segments 1 are bolted through the prefabricated beams 2, and the pier studs 3 are inserted into the prefabricated beams 2 to form a hidden beam structure.
Specifically, the prefabricated girder segment 1 includes a girder top plate 11, a girder bottom plate 13, a girder web plate 12, a concrete plate 14 and a plurality of top plate shear connectors, wherein the concrete plate 14 is arranged above the girder top plate 11, the top plate shear connectors are welded on the girder top plate 11 and connect the concrete plate 14 and the girder top plate 11 into a whole, the girder web plate 12 is welded between the girder top plate 11 and the girder bottom plate 13, and the girder top plate 11, the girder bottom plate 13 and the girder web plate 12 are all made of steel beams.
Above the abutment 3 an extension 31 is provided. The prefabricated beam 2 comprises a beam top plate 21, a beam bottom plate 22, a beam web 23 and a hole wall steel plate 24, the prefabricated beam 2 is arranged above the pier column 3, the prefabricated beam 2 is provided with a main beam extension section for being connected with the prefabricated end section 101 and the prefabricated middle beam section 102 to form a main beam structure, the connecting position is the longitudinal connecting section, and the adjacent main beam structures are connected through the transverse connecting section to form a bridge span structure. The beam bottom plate 22 is provided with an opening, the aperture of which is slightly larger than the diameter of the abutment 3, so that the protruding section 31 of the abutment 3 can be inserted into the prefabricated beam 2. The hole wall steel plates 24 are arranged between the beam webs 23, slotted holes are formed between the hole wall steel plates 24 and the beam webs 23, the slotted holes are positioned on the outer sides of the sections of the girder webs 12, beam shear connectors 26 are welded in the slotted holes, the extending sections 31 are inserted into the slotted holes, grouting holes are formed in the beam top plates 21, and the prefabricated beams 2 and the pier columns 3 are connected through high-strength concrete slurry. Through setting up stretch-in section 31 on pier stud 3, will stretch-in section 31 insert in the slotted hole for the bent cap is hidden in the main beam structure, forms dark crossbeam structure, has reduced building height, has improved the aesthetic feeling, and makes steel prefab with this dark crossbeam structure, and the hanging weight is less, and site operation is convenient.
The prefabricated beam 2 is internally provided with a slot hole, the slot hole is internally provided with a beam shear connector 26, the upper end of the pier column 3 is provided with a reinforcing plate 27, the reinforcing plate 27 is transversely arranged and inserted through the slot hole, the extending section 31 is inserted into the slot hole and rigid connection of the pier column 3 and the bent cap is realized through high-strength concrete slurry, the system advantage is utilized, the steel consumption of the structure is reduced, and the manufacturing cost is saved.
The prefabricated main girder segment 1 may be divided into a prefabricated end segment 101, a prefabricated center girder segment 102, called prefabricated end segment 101, located at both ends of the bridge body, and the remaining segments called prefabricated center girder segment 102.
The girder top plate 11 and the girder top plate 21 are bolted, the girder web 12 and the girder web 23 are bolted, and the girder bottom plate 13 and the girder bottom plate 22 are bolted. The prefabricated girder sections 1 adopt intersegmental bolting, so that the welding quality problem possibly caused by bottom plate overhead welding is avoided.
Preferably, to accommodate the fabrication of longer span bridges, the prefabricated end segment 101 is divided into prefabricated end a segments, prefabricated end b segments. The precast center sill segment 102 is divided into precast center sill a segments and precast center sill b segments. The prefabricated end section b and the prefabricated middle beam section a are connected with the prefabricated transverse beam 2, the connecting sections between the prefabricated end section b and the prefabricated transverse beam 2 and between the prefabricated middle beam section a and the prefabricated transverse beam 2 form a longitudinal connecting section a, and the prefabricated end section a and the prefabricated end section b, the prefabricated middle beam section a and the prefabricated middle beam section b form a longitudinal connecting section b. The two girder top plates 11 between the longitudinal connecting sections b are mutually butted and bolted, and the adjacent girder bottom plates 13 and girder webs 12 between the longitudinal connecting sections b are mutually butted and connected through bolt fastening. The longitudinal joint section b wet joint 8 is cast in place to form a longitudinal joint section and the transverse joint section wet joint 4 is cast in place between adjacent concrete slabs 14 to form a transverse joint section.
Preferably, the abutment 3 is configured in a rectangular configuration, and the length of the run-in section 31 should not be less than 1.2 times the length of the long side of the abutment 3.
Preferably, the abutment 3 is provided in a cylindrical configuration and the run-in section 31 is provided in a circular or rectangular configuration, the length of which should not be less than 1.2 times the diameter of the abutment 3.
Preferably, the pier column 3 is transversely provided with a lug 32, a support 33 is arranged above the lug 32, and the prefabricated beam 2 is internally provided with a support stiffening rib 25 above the support 33. Local stability and centralized force transmission are ensured, and the stability and torsion resistance of the precast beam 2 are improved.
With continued reference to fig. 3, the girder webs 12 and the beam webs 23 are collectively referred to as webs, the girder bottom plates 13 and the beam bottom plates 22 are collectively referred to as bottom plates, and the girder top plates 11 and the beam top plates 21 are collectively referred to as top plates. Specifically, a first splice plate 71 is arranged between the bottom plates and the webs between the adjacent sections and is fastened and connected through high-strength bolts 73, a second splice plate is arranged between the top plates between the adjacent sections and is fastened and connected through the high-strength bolts 73, the first splice plate 71 is a common flat splice plate, the second splice plate comprises a horizontal plate 721 and a plurality of vertical plates 722, the high-strength bolts 73 penetrate through and are connected with the top plates between the adjacent sections and the horizontal plate 721 into a whole, transverse reinforcing steel bars 723 penetrate through the vertical plates 722 to enable concrete plates in the range of the longitudinal connecting sections to be connected with the top plates into a whole, the connection of adjacent girder structures is achieved at the transverse connecting sections through transverse connecting section wet joints 4, and a bottom plate shear connector is arranged in the bottom plate area of the girder structure near the pier column 3 and is covered with girder bottom concrete to form a concrete reinforcing layer. The girder base 13 and the crossbeam base 22, which are located near the pier column 3, are provided with base shear connectors to form a concrete reinforcing layer. The second splice plate not only realizes the fastening between the top plates, but also can connect the top plates and the concrete post-pouring section into a whole, thereby avoiding the setting of the pegs at the position and simplifying the construction. When the prefabricated section is manufactured, the prefabricated middle beam section 102 is set to be in a pre-bending structure, and the prefabricated middle beam section 102 can fully utilize the compression performance of concrete and reduce the steel consumption.
Preferably, during the segment fabrication, the prefabricated end segment b is left at a distance from the side close to the prefabricated cross beam 2 without casting concrete, called a reserved segment.
Preferably, the width of the top plate at both ends is set to be larger than the width in the middle in order to increase structural stability and increase the area of the compression area. The top plates at the two ends of the prefabricated girder segment 1 are widened, and can be properly thickened if necessary, and a top plate shear connector is also arranged above the widened area of the top plate. Small cross beams are arranged between the prefabricated main beam sections 1. The roof widens and cooperates the connecting plate for the pressurized area of main beam structure increases, can demolish the temporary mound 6 below the longitudinal connecting section after the connection is accomplished, has reduced the traffic interference to the road below greatly. Simultaneously, the second bolt not only realizes the fastening between the bottom plate in the hogging moment area and the top plate in the positive bending moment area, but also can connect the top plate and the post-cast concrete section into a whole, thereby avoiding the setting of the stud at the position and simplifying the construction.
A construction method of a rigid frame bridge with a bolted section comprises the following steps:
s1, manufacturing a prefabricated cross beam 2, a prefabricated end section a, a prefabricated end section b, a prefabricated middle beam section a and a prefabricated middle beam section b.
S2, pouring or hoisting the pier stud 3, installing the support 33 on the supporting lug 32, hoisting the precast beam 2, inserting the extending section 31 of the pier stud 3 into the slot hole in the precast beam 2, and pouring the reinforced bar plate which is transversely arranged and inserted through the slot hole through high-strength concrete slurry to realize connection.
S3, hoisting temporary piers 6 arranged below the longitudinal connecting sections a and b, and pouring beam bottom concrete by adopting full-bolt connection and fixation between the sections.
S4, removing the temporary pier 6.
S5, pouring a wet joint 8 of the longitudinal connecting section b and a wet joint 4 of the transverse connecting section.
S6, pouring a reserved section of the b section of the prefabricated end part and a concrete layer at the top of the prefabricated beam 2 to form a hogging moment area wet joint 5, and applying a certain weight if necessary.
S7, constructing bridge decks and auxiliary facilities.
Preferably, the precast middle beam segment 102 is set to be a pre-bent structure, specifically, in step S1, when the precast middle beam b segment is manufactured, beam tops at two ends of the precast middle beam b segment are fixed by using reaction frames, jacks are arranged at the bottom of the precast middle beam b segment and apply a jacking force, after the jacking force reaches a preset value, the precast middle beam b segment is replaced by a span middle beam bottom support, and then a concrete slab 14 at the top is poured.
Preferably, the bottom plate of the b section of the precast middle beam is provided with a reinforcing rib.
The prefabricated girder segment 1 meets the coordination of engineering building modulus, is beneficial to industrialized mass production, has adjustable width of the wet joint 4 of the transverse connecting section, and is suitable for the application of the width-changing section. The main manufacturing of the girder structure is placed in a prefabrication factory, so that the girder structure is beneficial to ensuring engineering quality, is suitable for steel-concrete composite girders with larger spans, is beneficial to fully playing the structural advantages of the steel-concrete composite girders, and has good technical and economic benefits and wide application prospects.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (7)
1. A segment bolted rigid frame bridge, comprising:
The precast girder segment comprises a girder top plate, a girder bottom plate, a girder web plate, a concrete plate and a plurality of top plate shear connectors, wherein the concrete plate is arranged above the girder top plate, the top plate shear connectors are welded on the girder top plate and connect the concrete plate and the girder top plate into a whole, and the girder web plate is arranged between the girder top plate and the girder bottom plate;
A pier column with an extending section arranged above the pier column, and
The precast beam comprises a beam top plate, a beam bottom plate, a beam web and a hole wall steel plate, wherein the precast beam is arranged above a pier column, the precast beam is provided with a main beam extension section and is used for being connected with a precast end section and a precast middle beam section to form a main beam structure, the beam bottom plate is provided with holes, the hole wall steel plate is arranged between the beam webs, a slot hole is formed between the hole wall steel plate and the beam web, the slot hole is positioned outside the section of the main beam web, the extension section is inserted into the slot hole, a beam shear connector is arranged in the slot hole, the beam top plate is provided with a grouting hole, the upper end of the pier column is provided with a steel rib plate, the steel rib plate is transversely arranged and inserted into the slot hole, the precast beam is connected with the pier column through high-strength concrete slurry, the precast main beam section is divided into the precast end section and the precast middle beam section, the main beam top plate and the beam top plate are bolted by adopting bolts, and the main beam bottom plate and the beam web are bolted by bolts;
the prefabricated end section is divided into a prefabricated end section a and a prefabricated end section b, the prefabricated middle beam section is divided into a prefabricated middle beam section a and a prefabricated middle beam section b, wherein the prefabricated end section b and the prefabricated middle beam section a are connected with the prefabricated cross beam, a longitudinal connecting section a is formed by connecting sections between the prefabricated end section b and the prefabricated cross beam, and a longitudinal connecting section b is formed by connecting sections between the prefabricated end section b and the prefabricated end section b, and between the prefabricated middle beam section a and the prefabricated middle beam section b;
Adjacent girder top plates, girder bottom plates and girder webs between the longitudinal connecting sections b are mutually butted and connected through bolt fastening;
The horizontal bridge of pier stud sets up the support ear to holding in the palm the ear top and setting up the support, prefabricated crossbeam is provided with the support stiffening rib in support top inside.
2. The segment bolted rigid frame bridge of claim 1, wherein said pier stud is configured in a rectangular configuration, and said extension length is not less than 1.2 times the dimension of the long side of said pier stud.
3. The segment bolted rigid frame bridge of claim 1, wherein said pier stud is configured in a cylindrical configuration and said run-in segment is configured in a circular or rectangular configuration having a length not less than 1.2 times the diameter of said pier stud.
4. The segment bolted rigid frame bridge of claim 1, wherein:
The girder web plate and the girder web plate are collectively called as web plate, the girder bottom plate and the girder bottom plate are collectively called as bottom plate, and the girder top plate are collectively called as top plate;
A first splice plate is arranged between the bottom plates and the webs between the adjacent sections and is connected with each other through high-strength bolts, a second splice plate is arranged between the top plates between the adjacent sections and is connected with each other through high-strength bolts, the first splice plate is a common flat splice plate, the second splice plate comprises a horizontal plate and a plurality of vertical plates, the high-strength bolts penetrate through the top plates and the horizontal plates to be connected with the top plates between the adjacent sections into a whole, transverse steel bars penetrate through the vertical plates to enable the concrete plates within the range of the longitudinal connecting sections to be connected with the top plates into a whole, and the connection of adjacent girder structures is realized at the transverse connecting sections through wet joints of the transverse connecting sections;
And a bottom plate shear connector is arranged in the bottom plate area of the girder structure near the pier column, and the bottom plate shear connector is covered by beam bottom concrete to form a concrete reinforcing layer.
5. A method of constructing a segment-bolted rigid frame bridge according to any one of claims 1 to 4, comprising the steps of:
s1, manufacturing a prefabricated cross beam, a prefabricated end section a, a prefabricated end section b, a prefabricated middle beam section a and a prefabricated middle beam section b;
S2, pouring or hoisting pier columns, installing supports on the supporting lugs, hoisting prefabricated cross beams, inserting the extending sections of the pier columns into slotted holes in the prefabricated cross beams, and pouring reinforced plates which are transversely arranged and inserted through the slotted holes through high-strength concrete slurry to realize connection;
s3, hoisting temporary piers below the longitudinal connecting sections a and b, and pouring beam bottom concrete between the sections by adopting full-bolt connection and fixation;
s4, removing the temporary pier;
S5, pouring wet joints of the longitudinal connecting section b and wet joints of the transverse connecting section;
S6, pouring a reserved section of the b section of the prefabricated end part and a concrete layer at the top of the prefabricated beam to form a hogging moment area wet joint, and applying a certain weight if necessary;
S7, constructing bridge decks and auxiliary facilities.
6. The method for constructing a rigid frame bridge bolted to a section according to claim 5, wherein in step S1, when a precast middle beam section b is produced, beam tops at both ends of the precast middle beam section b are fixed by reaction frames, jacks are arranged at the bottoms of the precast middle beam section b and a jacking force is applied, when the jacking force reaches a preset value, the precast middle beam section b is replaced by a span middle beam bottom support, and then a concrete slab at the top is poured.
7. The method for constructing a rigid frame bridge bolted to a section according to claim 6, wherein said prefabricated middle beam b section is provided with reinforcing ribs on the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011344145.5A CN112502025B (en) | 2020-11-25 | 2020-11-25 | Segment bolted rigid frame bridge and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011344145.5A CN112502025B (en) | 2020-11-25 | 2020-11-25 | Segment bolted rigid frame bridge and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112502025A CN112502025A (en) | 2021-03-16 |
| CN112502025B true CN112502025B (en) | 2025-02-18 |
Family
ID=74967444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011344145.5A Active CN112502025B (en) | 2020-11-25 | 2020-11-25 | Segment bolted rigid frame bridge and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112502025B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214969B (en) * | 2021-12-01 | 2024-07-30 | 广州市市政工程设计研究总院有限公司 | Width splicing structure and method of width splicing bridge |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216129958U (en) * | 2020-11-25 | 2022-03-25 | 广州市市政工程设计研究总院有限公司 | Rigid frame bridge with bolted sections |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101200563B1 (en) * | 2008-07-14 | 2012-11-13 | 한국건설기술연구원 | Steel composite bridge and construction method using steel cross beams to connect steel molds |
| CN101906754B (en) * | 2010-07-09 | 2012-02-08 | 清华大学 | A Rigid Connection Method for Steel Beams and Concrete Bridge Piers |
| CN107700653B (en) * | 2017-09-20 | 2023-08-01 | 中国建筑股份有限公司 | Mixed connection post-tensioned prestressing assembled concrete frame system and construction method thereof |
| CN108487047B (en) * | 2018-03-28 | 2020-06-09 | 东南大学 | A rigid connection structure of double-layer steel box-concrete composite pier column and steel box girder |
| CN111364350B (en) * | 2020-04-07 | 2021-05-04 | 浙江大学 | A light-weight steel-concrete composite cover beam with quick installation of large cantilever arm |
| CN111893886B (en) * | 2020-07-06 | 2021-09-03 | 湖北工业大学 | Construction method of full-prefabricated assembled corrugated steel web bridge with web and top and bottom plates in welded connection |
-
2020
- 2020-11-25 CN CN202011344145.5A patent/CN112502025B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216129958U (en) * | 2020-11-25 | 2022-03-25 | 广州市市政工程设计研究总院有限公司 | Rigid frame bridge with bolted sections |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112502025A (en) | 2021-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112458877B (en) | An assembled steel-concrete composite rigid frame bridge and construction method thereof | |
| CN202131559U (en) | Corrugated steel web plate prestressed concrete continuous box girder | |
| CN102220739A (en) | Corrugated steel web prestressed concrete continuous box girder and construction method thereof | |
| CN111206489A (en) | An assembled corrugated web steel box-UHPC composite girder bridge and construction method | |
| CN102704406B (en) | Roadbed slab non-tensile stress construction method based on combined channel girder | |
| CN114592440B (en) | Upper structure of assembled steel-concrete combined bridge and construction process thereof | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN112982139A (en) | Wide-width large-span hybrid beam and short-tower cable-stayed bridge system and construction method thereof | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| CN214737317U (en) | Steel-concrete combined rigid frame bridge connected through slots | |
| CN112502025B (en) | Segment bolted rigid frame bridge and construction method thereof | |
| CN214459551U (en) | Bolt welding type combined continuous beam between segments | |
| CN212335738U (en) | Double-combination continuous truss girder of combined steel web member for highway and railway construction | |
| CN112411353A (en) | Prefabricated assembled steel-concrete composite beam bolted in longitudinal segmentation mode and construction method | |
| CN112458879A (en) | Bolt-welding mixed-connection segmented prefabricated assembled combination beam and construction method thereof | |
| CN201381470Y (en) | Assembled variable cross-section composite continuous bridge | |
| CN112727157A (en) | Assembled double-column overhead station | |
| CN216129958U (en) | Rigid frame bridge with bolted sections | |
| CN112502023B (en) | A slot-connected steel-concrete composite rigid frame bridge and construction method thereof | |
| CN218989851U (en) | Fully assembled steel-concrete plate truss combined bridge | |
| CN214459552U (en) | Assembled steel-concrete combined rigid frame bridge | |
| CN207987777U (en) | A kind of high pier girder steel pushing tow support device | |
| CN214459550U (en) | Prefabricated assembled steel-concrete composite beam of vertical segmentation bolt joint | |
| CN219137410U (en) | Assembled cantilever bent cap support and modularized prefabricated variable-height truss girder thereof | |
| CN113073541B (en) | A combined cap beam, bridge and construction process suitable for continuous bridge deck structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |