CN213951913U - Structure for hogging moment area of steel-concrete combined continuous beam bridge - Google Patents
Structure for hogging moment area of steel-concrete combined continuous beam bridge Download PDFInfo
- Publication number
- CN213951913U CN213951913U CN202022545005.6U CN202022545005U CN213951913U CN 213951913 U CN213951913 U CN 213951913U CN 202022545005 U CN202022545005 U CN 202022545005U CN 213951913 U CN213951913 U CN 213951913U
- Authority
- CN
- China
- Prior art keywords
- steel
- concrete
- bridge
- hogging moment
- prefabricated
- 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
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to the technical field of the bridge. A construction for a hogging moment region of a steel-concrete composite continuous beam bridge comprises a first precast main beam and a second precast main beam; notches are formed in the opposite end portions of the first prefabricated main beam and the second prefabricated main beam, so that the notches of the first prefabricated main beam and the second prefabricated main beam are spliced to form a T-shaped seam of a rectangular strip with a serrated edge at the upper portion and a vertical groove body with a serrated edge at the middle lower portion; first prefabricated body girder and second prefabricated body girder constitute by the roof beam body that the steel sheet welding formed, the beam slab includes I-steel, decking and end baffle, the top of I-steel is connected the decking, the decking is the stairstepping, the I-steel has welded with cast-in-place wet seam juncture the end baffle, the utility model discloses novel structure, construction convenience, the strong steel-concrete combination continuous beam bridge hogging moment district structure of suitability to prevent hogging moment district bridge floor slab concrete seam department fracture, improve structural durability.
Description
Technical Field
The utility model belongs to the technical field of the bridge, concretely relates to a structure that is used for steel-concrete combination continuous beam bridge hogging moment district.
Background
Under the background that the transportation department puts forward the characteristic performance advantages of steel structure bridges into full use to realize transformation and upgrading of highway structures, the form of the steel-concrete composite structure bridges is widely adopted in provinces and cities in China, and the highway construction is optimized and promoted. The novel building has a quick and convenient construction mode, small building height, light and attractive structure and shape, and has great competitiveness.
For a multi-span bridge, the beam height can be further reduced by adopting the continuous composite beam, and the service performance is better. However, in the hogging moment area of the continuous composite beam, the concrete will bear tensile force, the steel beam will bear pressure, and the limit state of the structure is often controlled by the cracking of the concrete and the buckling of the steel beam in the hogging moment area, which is very disadvantageous for both the steel beam and the concrete. At present, prestress is mostly applied to a concrete bridge deck slab during construction to meet certain stress requirements, but the bridge deck slab in a hogging moment area has more cracks and poor durability, a lower steel beam is easy to bend and destabilize, the construction process is complicated, particularly after the concrete bridge deck slab cracks, the rigidity of a composite beam is reduced, harmful liquid is easy to permeate and corrode reinforcing steel bars, studs and steel beams in the concrete slab, the durability of the bridge is reduced, and the difficulty of maintenance work is increased. Therefore, how to prevent the concrete crack in the hogging moment area or how to effectively control the width of the concrete crack in the hogging moment area is a key problem influencing the design of the continuous composite girder bridge. To this kind of condition, the utility model provides a solve the regional unfavorable stress state's of hogging moment structural style.
The ultra-high performance concrete (UHPC) is also called active powder concrete, is a cement-based composite material which is prepared by fine aggregates such as cement, quartz sand, quartz powder, silica fume, fly ash, steel fiber, high-efficiency water reducing agent and the like according to the maximum compact theory, and has the characteristics of high strength, high toughness, low porosity, high durability and no shrinkage in the later period.
Therefore, the utility model discloses need to solve the regional unreasonable problem of atress of current continuous composite beam hogging moment, provide the regional atress requirement of hogging moment that accords with, simple structure, construction convenience, suitability are strong steel-mix combination continuous beam bridge hogging moment district structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome the not enough of current prestressing force method of applying at hogging moment district decking, provide a novel structure, construction convenience, the strong structure in steel-concrete combination continuous beam bridge hogging moment district of suitability to prevent hogging moment district bridge floor concrete seam crossing fracture, improve structural durability.
In order to solve the technical problem, the utility model provides a technical scheme does:
a construction for a hogging moment region of a steel-concrete composite continuous beam bridge comprises a first precast main beam and a second precast main beam; notches are formed in the opposite end portions of the first prefabricated main beam and the second prefabricated main beam, so that the notches of the first prefabricated main beam and the second prefabricated main beam are spliced to form a T-shaped seam of a rectangular strip with a serrated edge at the upper portion and a vertical groove body with a serrated edge at the middle lower portion;
the first prefabricated body girder and the second prefabricated body girder are both composed of girder bodies formed by welding steel plates, each girder plate comprises an I-shaped steel, a bridge deck and an end partition plate, the top of each I-shaped steel is connected with the bridge deck, each bridge deck is in a step shape, the end partition plate is welded at the junction of each I-shaped steel and a cast-in-place wet joint, each I-shaped steel is provided with a web plate, a top plate and a bottom plate, each web plate is vertically connected with the top plate and the corresponding bottom plate to form I-shaped steel, each web plate of each I-shaped steel is provided with a web plate extending section extending inwards the T-shaped joint, each web plate extending section is provided with a stud, and the end part of each top plate of each I-shaped steel is provided with a top plate extending section extending outwards; the first prefabricated body girder and the second prefabricated body girder are connected through the steel connecting plates in a welded mode.
Further, all pre-buried being provided with the longitudinal reinforcement that extends to in the rectangle strip in first prefabricated body girder and the second prefabricated body girder, the longitudinal reinforcement in the rectangle strip is connected by the overlap joint reinforcing bar still be provided with the transverse reinforcement perpendicularly on the longitudinal reinforcement.
Furthermore, the end part of the first prefabricated body girder and the bridge deck of the second prefabricated body girder are both pre-buried with interface reinforcing steel bars for connecting and binding longitudinal reinforcing steel bars in the rectangular strips.
Furthermore, the end baffle is the end baffle of buckling shape, the end baffle of buckling shape has the slot that sets up along vertical cell body direction and to the pterygoid lamina that the slot both sides extended.
Furthermore, the top plate extending section is a plurality of long straight steel bars arranged at intervals, and the middle top plate extending section is provided with studs.
Furthermore, UHPC concrete is filled in the rectangular strip of the T-shaped joint to form a zigzag edge rectangular UHPC strip, and common concrete or the UHPC concrete and the common concrete are filled in the vertical groove body layer by layer.
Further, in the vertical groove body, a UHPC concrete layer is positioned above a common concrete layer.
Further, the longitudinal bridge length of the rectangular strip is 1/15-1/3 of the calculated span, and the longitudinal bridge length of the vertical groove body is greater than or equal to 90 cm.
Further, the steel connecting plate is arranged above the welding position of the overhanging sections of the bottom plates of the I-shaped steel on the two sides.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, T type seam is satisfying connecting portion and pours under closely knit requirement, when continuous beam bridge hogging moment district bears axial tension, the cohesive force and the extrusion of concrete in the overhanging section of roof of I-steel and the seam have very big contribution to the tensile strength of cross-section, will further strengthen the tensile strength of cross-section, improve the atress performance in hogging moment district, thereby solve steel-thoughtlessly make up continuous beam bridge hogging moment district top decking pulling force too big, the easy problem that splits of decking.
(2) The utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district is provided with the serration groove in prefabricated decking edge, and sawtooth shape and quantity can be adjusted according to actual conditions, and the serration groove can increase the area of contact of cast-in-place UHPC and precast beam, strengthens the joint strength of interface department, further improves the vertical shear capacity of seam crossing, improves the wholeness of prefabricated assembly roof beam.
(3) The utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district can improve the ability that seam crossing resisted the hogging moment, and longitudinal reinforcement adopts the lapped mode, and construction convenience, swift can satisfy the requirement of rapid prefabrication assembly construction.
(4) The utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, upper portion Ultra High Performance Concrete (UHPC) bridge cast-in-place layer are the rectangle strip, can provide sufficient overlap joint length and give top layer longitudinal reinforcement, improve lapped quality, convenient construction.
(5) The utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, the cast-in-place UHPC that adopts on top Ultra High Performance Concrete (UHPC) layer is compared with ordinary concrete, and the production of fissured effectively is avoided to intensity, toughness and the durability in reinforcing hogging moment district that can be very big.
(6) The utility model discloses a structure that is used for steel-concrete combination continuous beam bridge hogging moment district can cancel mound top prestressed tendons, and the construction is simple, and economic nature is good, can avoid hogging moment district to set up prestressing force and make decking produce crack and girder steel bucking.
(7) The utility model discloses in a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, through adjusting the horizontal length of T type seam, notch length, the overhanging section of web peg quantity and the overhanging section of bottom plate on the peg quantity, can make things convenient for moment of flexure and shear force that the matching combination beam hogging moment district bore.
(8) The utility model discloses in a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, I-steel and the arrangement of the shape baffle of buckling of horizontal seam juncture not only play the effect of the bending resistance of putting more energy into, the use of template when having reduced the construction simultaneously has reduced the construction degree of difficulty, has simplified construction steps.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view showing the construction of a hogging moment region in example 1 (steel bar arrangement and wet joint filling are not shown).
FIG. 2 is an exploded view of a portion of the structure of a main beam of the preform.
FIG. 3 is a schematic view showing the construction of the hogging moment region in example 1 (steel bar arrangement and wet joint unfilled are not shown in the figure).
Fig. 4 is a plan view of fig. 3.
Fig. 5 is an elevation view of fig. 3.
Fig. 6 is a schematic view of the seam of fig. 3.
FIG. 7 is a schematic view of the end spacer and the peg thereon.
FIG. 8 is a schematic diagram of concrete filled in a vertical groove body at the middle lower part in the T-shaped joint.
FIG. 9 is a schematic diagram of the arrangement of the reinforcing mesh in the upper rectangular strip on the top of the hogging moment area.
Fig. 10 is a schematic layout view of longitudinal steel bars and lap steel bars in the second-layer prefabricated bridge deck slab at the top of the hogging moment area.
FIG. 11 is a schematic view showing the arrangement of longitudinal steel bars and lap steel bars in the third layer of prefabricated bridge deck slab at the top of the hogging moment area.
Wherein, labeled in the figures: 1-I-steel; 101-a base plate; 102-a web; 103-a top plate; 1001-floor overhang section; 1002-a web overhang section; 1003-roof overhang section; 2-a bridge deck; 3-rectangular strips; 301-rectangular UHPC strip edge convex; 4-vertical trough body; 401-vertical groove body projection; 5-end baffle plate; 6-stud; 7-a steel connecting plate; 8-longitudinal steel bars; 9-lapping reinforcing steel bars; 10-transverse steel bars; 11-interface steel bar.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples. It should be noted that the specific embodiments of the present invention are only for clearly describing the technical solutions, and should not be taken as a limitation to the scope of the present invention.
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
It should be particularly noted that when an element is referred to as being "fixed to, connected to or communicated with" another element, it can be directly fixed to, connected to or communicated with the other element or indirectly fixed to, connected to or communicated with the other element through other intermediate connecting components.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Referring to fig. 1 to 11, a construction for a hogging moment region of a steel-concrete composite continuous girder bridge includes a first precast main girder and a second precast main girder; notches are formed in the opposite end portions of the first and second main prefabricated body beams, so that the notches of the first and second main prefabricated body beams are spliced to form a T-shaped seam of a rectangular strip 3 with a serrated edge at the upper portion and a vertical groove 4 with a serrated edge at the middle and lower portions; UHPC concrete is filled in the rectangular strips 3 of the T-shaped joints to form zigzag-edge rectangular UHPC strips, rectangular UHPC strip edge bulges 301 are arranged on opposite sides of the rectangular strips 3, and common concrete or UHPC concrete and common concrete are filled in the vertical groove bodies 4 layer by layer. And in said vertical trough 4 a layer of UHPC concrete is located above a layer of ordinary concrete. The opposite side of the vertical channel 4 has a vertical channel projection 401.
The first prefabricated body girder and the second prefabricated body girder are both composed of girder bodies formed by welding steel plates, each girder body comprises an I-shaped steel 1, a bridge deck 2 and an end partition plate 5, the top of the I-shaped steel 1 is connected with the bridge deck 2, the bridge deck 2 is in a step shape, the end partition plate 5 is welded at the junction of the I-shaped steel 1 and a cast-in-place wet joint, the I-shaped steel 1 is provided with a web plate 102, a top plate 103 and a bottom plate 101, the web plate 102 is vertically connected with the top plate 103 and the bottom plate 101 to form I-shaped steel, the web plate 102 of the I-shaped steel 1 is provided with a web plate extending section 1002 extending into the T-shaped joint, studs 6 are vertically arranged on the web plate extending section 1002, and the end part of the top plate 103 of the I-shaped steel 1 is provided with a top plate extending section 1003 extending outwards; the top plate extending section 1003 is formed by a plurality of long straight steel bars arranged at intervals, and the middle top plate extending section 1003 is vertically provided with studs 6. The bottom plate 101 of the I-beam 1 extends into the concrete beam, the end part of the bottom plate 101 of the I-beam 1 is provided with a bottom plate extending section 1001 extending outwards, the bottom plate 101 of the I-beam 1 is vertically provided with a stud 6, and the bottom plates 101 of adjacent I-beams 1 are welded and connected through a steel connecting plate 7, so that the first prefabricated main beam and the second prefabricated main beam are connected through the steel connecting plate 7; the bottom plates 101 of the prefabricated steel-concrete composite beam I-shaped steel 1 on the two sides are welded before system conversion at the continuous pier and are welded with the connecting steel plates, and the steel connecting plates 7 are arranged on the welding positions of the bottom plate extending sections 1001 of the I-shaped steel 1 on the two sides.
The utility model discloses a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, T type seam is satisfying connecting portion and pours under the closely knit requirement, when continuous beam bridge hogging moment district bears axial tension, the cohesive force and the squeezing action of concrete have very big contribution to the tensile ability in cross-section in I-steel 1's the overhanging section 1003 of roof and the seam, will further strengthen the tensile ability in cross-section, improve the atress performance in hogging moment district, thereby solve the problem that 2 pulling forces of bridge deck slab are too big above steel-thoughtlessly makes up continuous beam bridge hogging moment district, 2 easy fissures of bridge deck slab.
All pre-buried being provided with in first prefabricated body girder and the second prefabricated body girder and extending to the longitudinal reinforcement 8 in the rectangular strip 3, the longitudinal reinforcement 8 in the rectangular strip 3 is connected by overlap joint reinforcing bar 9, and reinforcing bar quantity is according to particular case and decide. And transverse steel bars 10 are also vertically arranged on the longitudinal steel bars 8. The end of the first prefabricated body girder and the bridge deck 2 of the second prefabricated body girder are both pre-buried and provided with interface reinforcing steel bars 11 used for connecting longitudinal reinforcing steel bars 8 in the binding rectangular strips 3, and the interface reinforcing steel bars 11 need to be firmly hooked with outermost main reinforcing steel bars.
The end baffle 5 is a bent end baffle 5, and the bent end baffle 5 is provided with a groove arranged along the direction of the vertical groove body 4 and wing plates extending to the two sides of the groove. The wing plates at the two sides extend to the transverse bridge edge of the vertical groove body 4.
The longitudinal bridge length of the rectangular strip 3 is 1/15-1/3 of the calculated span, and the longitudinal bridge length of the vertical groove body 4 is greater than or equal to 90 cm. By adjusting the transverse length of the T-shaped seam, the length of the notch, the number of the studs 6 of the web overhanging section 1002 and the number of the studs 6 of the bottom plate overhanging section 1001, the bending moment and the shearing force borne by the hogging moment area of the combined beam can be matched conveniently.
Example 1:
the utility model relates to a structure that is used for steel-thoughtlessly to make up continuous beam bridge hogging moment district, prefabricated body steel-thoughtlessly makes up the roof beam 2 that the roof beam is made by lower part I-steel 1 and upper portion ordinary concrete and passes through the 6 connecting pieces of peg and connect, hogging moment district structure includes two prefabricated body steel-thoughtlessly makes up the roof beam, the notch concatenation of first prefabricated body girder and second prefabricated body girder forms the upper portion and is the wet seam of cast-in-place of the rectangle strip 3 of cockscomb structure edge, the vertical cell body 4 of cockscomb structure edge in the middle and lower part, and the UHPC layer longitudinal bridge that the upper portion of T type seam was filled is 6m to length, and thickness is 0.11; the longitudinal bridge length of the lower common concrete layer is 1.2m, and the height is 1.69 m. The end of the first prefabricated body girder and the bridge deck 2 of the second prefabricated body girder are both pre-buried and provided with longitudinal steel bars 8 extending into the T-shaped joint, and interface steel bars 11 used for connecting and binding the longitudinal steel bars 8 in the rectangular UHPC strip with the serrated edge, and the longitudinal steel bars 8 in the T-shaped joint are connected by lap-jointed steel bars 9. As shown in fig. 10, the UHPC layer lapped steel bars 9 in the rectangular strip 3 are single-layer and 20mm in diameter, and the ordinary concrete layer lapped steel bars 9 are double-layer and 25mm in diameter; as shown in fig. 11, the longitudinal steel bars 8 in the bridge deck slab 2 prefabricated in the hogging moment area are 2 layers, the diameter of the longitudinal steel bars is 28mm, the diameter of the longitudinal steel bars is 20mm in addition to the diameter of the longitudinal steel bars 1 layer, the distance between the longitudinal steel bars 8 is 10cm, the longitudinal steel bars 8 in the UHPC layer are bound, and the longitudinal steel bars 8 in the common concrete layer are welded on one side. A bent end partition plate 5 is welded at the junction of the I-steel 1 and the T-shaped joint, studs 6 are arranged on the web plate extending section 1002 of the I-steel 1, a top plate extending section 1003 extending outwards is arranged at the end part of the top plate 103 of the I-steel 1, the bottom plate 101 of the I-steel 1 extends into the concrete beam, and the studs 6 are arranged on the bottom plate 101 of the I-steel 1. The bottom plates 101 of the prefabricated steel-concrete composite beam I-shaped steel 1 on the two sides are welded before system conversion at the continuous pier and are welded with the steel connecting plate 7. The utility model discloses a set up notch formation cockscomb structure edge rectangle UHPC strip on wet seam upper portion and avoided the reinforcing bar to arrange the time collision and beat the frame, the overlap joint reinforcing bar 9 of being convenient for, convenient construction, the joint strength of the design reinforcing interface department of the vertical cell body 4's of the combination of middle and lower part cockscomb structure shape is strengthened to upper portion cockscomb structure edge rectangle UHPC strip in addition, further improves the ability that negative moment and shear force are resisted to the seam crossing, improves the wholeness of prefabricated assembly roof beam.
The utility model discloses in, T type seam is satisfying under connecting portion pours closely knit requirement, when continuous beam bridge hogging moment district bears axial tension, the cohesive force and the squeezing action of concrete have very big contribution to the tensile ability in cross-section in the overhanging section 1003 of I-steel 1 roof and the seam, will further strengthen the tensile ability in cross-section, improve the atress performance in hogging moment district, thereby solve 2 pulling forces too big, the easy problem that splits of decking above the steel-concrete combination continuous beam bridge hogging moment district 2.
The utility model discloses in, I-steel 1 not only plays the effect of the bending resistance of putting more energy into with arranging of horizontal seam juncture bending type end baffle 5, has reduced the use of template when being under construction simultaneously, has reduced the construction degree of difficulty, has simplified construction steps.
The embodiment of the utility model provides a construction method that is used for structure in steel-concrete combination continuous beam bridge hogging moment district as follows:
s1: prefabricating the prefabricated steel-concrete composite beam, wherein longitudinal steel bars 8 extending into wet joints are pre-embedded in the bridge deck 2 of the first prefabricated main beam and the second prefabricated main beam, and interface steel bars 11 are pre-embedded so as to bind steel bars in rectangular UHPC strips;
s2: accurately positioning two oppositely arranged steel-concrete composite beam prefabricated bodies on a construction site, welding steel structures on two sides, and utilizing lap-joint reinforcing steel bars 9 to lap-joint longitudinal reinforcing steel bars 8 pre-embedded in bridge decks 2 on two sides;
s3: fixedly connecting a bent end clapboard 5 at the end part of the I-shaped steel 1, welding a stud 6 connecting piece at the corresponding position, and erecting a template for forming a T-shaped joint;
s4: and pouring common concrete in the serrated vertical groove bodies 4 at the middle lower parts of the T-shaped joints and rectangular UHPC strips at the serrated edges of the upper layers of the T-shaped joints in batches, and curing to finish the construction process.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A construction for a hogging moment region of a steel-concrete composite continuous beam bridge comprises a first precast main beam and a second precast main beam; the method is characterized in that: notches are formed in the opposite end portions of the first and second main prefabricated body beams, so that the notches of the first and second main prefabricated body beams are spliced to form a T-shaped seam of a rectangular strip (3) with a serrated edge at the upper portion and a vertical groove body (4) with a serrated edge at the middle and lower portion; the first prefabricated main beam and the second prefabricated main beam are both composed of beam bodies formed by welding steel plates, the beam body comprises I-shaped steel (1), a bridge deck (2) and an end clapboard (5), the top of the I-shaped steel (1) is connected with the bridge deck (2), the bridge deck (2) is in a step shape, the end clapboard (5) is welded at the junction of the I-shaped steel (1) and the cast-in-situ wet joint, the I-shaped steel (1) is provided with a web plate (102), a top plate (103) and a bottom plate (101), the web plate (102) is vertically connected with the top plate (103) and the bottom plate (101) to form an I-shaped steel material, the web (102) of the I-shaped steel (1) is provided with a web extending-out section (1002) extending into the T-shaped joint, a stud (6) is arranged on the web extending-out section (1002), a top plate extending section (1003) extending outwards is arranged at the end part of the top plate (103) of the I-shaped steel (1); the concrete beam is characterized in that a bottom plate (101) of the I-shaped steel (1) extends into the concrete beam, a bottom plate extending section (1001) extending outwards is arranged at the end part of the bottom plate (101) of the I-shaped steel (1), studs (6) are arranged on the bottom plate (101) of the I-shaped steel (1), and the bottom plates (101) of adjacent I-shaped steels (1) are connected through steel connecting plates (7) in a welding mode.
2. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: all pre-buried longitudinal reinforcement (8) that are provided with in extending to rectangle strip (3) in first prefabricated body girder and the second prefabricated body girder, longitudinal reinforcement (8) in rectangle strip (3) are connected by overlap joint reinforcing bar (9), still be provided with transverse reinforcement (10) perpendicularly on longitudinal reinforcement (8).
3. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: the end part of the first prefabricated body girder and the bridge deck (2) of the second prefabricated body girder are both pre-buried with interface reinforcing steel bars (11) used for connecting and binding longitudinal reinforcing steel bars (8) in the rectangular strips (3).
4. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: the end baffle (5) is the end baffle (5) of buckling shape, the end baffle (5) of buckling shape has the slot that sets up along vertical cell body (4) direction and to the pterygoid lamina that the slot both sides extend.
5. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: the roof overhanging section 1003 is formed by a plurality of long straight steel bars arranged at intervals, and the middle roof overhanging section (1003) is provided with studs (6).
6. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: UHPC concrete is filled in the rectangular strips (3) of the T-shaped joints to form rectangular UHPC strips with saw-toothed edges, and common concrete or the UHPC concrete and the common concrete are filled in the vertical groove bodies (4) layer by layer.
7. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 6, wherein: in the vertical groove body (4), the UHPC concrete layer is positioned above the common concrete layer.
8. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: the longitudinal bridge length of the rectangular strip (3) is 1/15-1/3 of the calculated span, and the longitudinal bridge length of the vertical groove body (4) is greater than or equal to 90 cm.
9. The construction for the hogging moment zone of the steel-concrete composite continuous beam bridge as claimed in claim 1, wherein: the steel connecting plate (7) is arranged on the welding position of the bottom plate extending sections (1001) of the I-shaped steels (1) on the two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545005.6U CN213951913U (en) | 2020-11-06 | 2020-11-06 | Structure for hogging moment area of steel-concrete combined continuous beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545005.6U CN213951913U (en) | 2020-11-06 | 2020-11-06 | Structure for hogging moment area of steel-concrete combined continuous beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213951913U true CN213951913U (en) | 2021-08-13 |
Family
ID=77207560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022545005.6U Active CN213951913U (en) | 2020-11-06 | 2020-11-06 | Structure for hogging moment area of steel-concrete combined continuous beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213951913U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211089A (en) * | 2020-11-06 | 2021-01-12 | 广西路桥工程集团有限公司 | Structure for hogging moment area of steel-concrete combined continuous beam bridge |
-
2020
- 2020-11-06 CN CN202022545005.6U patent/CN213951913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211089A (en) * | 2020-11-06 | 2021-01-12 | 广西路桥工程集团有限公司 | Structure for hogging moment area of steel-concrete combined continuous beam bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112211089A (en) | Structure for hogging moment area of steel-concrete combined continuous beam bridge | |
| CN108677685B (en) | Ultra-high-performance concrete-part steel beam combined bent cap and construction method thereof | |
| CN109958049B (en) | A modular steel-concrete composite small box girder simply supported continuous bridge and its construction method | |
| CN101550675B (en) | Corrugated steel ventral shield preflex composite beam and construction method thereof | |
| CN204185755U (en) | A kind of Wavelike steel webplate post-stressed concrete T beam | |
| CN108221634A (en) | The Wavelike steel webplate I-shaped composite beam bridge of maximum assembling | |
| CN109610314A (en) | Prefabricated bridge deck wet joint structure and assembling method | |
| CN102182141B (en) | Longitudinal non-shearing-resistant T-shaped anti-pulling connecting piece and construction method thereof | |
| CN105064196B (en) | The fish belly I-shaped combination of prestressing force steel reinforced concrete simply supported girder bridge and its construction method of precast assembly | |
| CN207633207U (en) | A kind of ultra-high performance concrete seam construction for assembly hollow slab bridges beam | |
| CN103938549A (en) | Construction method for fabricated type corrugated steel inclined web combined beam | |
| CN113481826A (en) | Prefabricated assembled corrugated steel web combination box girder | |
| CN108755380A (en) | A kind of UHPC small box girders structure | |
| CN108316120A (en) | It can rapidly-assembled precast bridge and its construction method | |
| CN213951913U (en) | Structure for hogging moment area of steel-concrete combined continuous beam bridge | |
| CN111827075A (en) | Continuous steel truss combined girder bridge and construction method for high-speed railway highway-rail combined construction | |
| CN110886191A (en) | A kind of prestressed concrete-steel composite beam and preparation method thereof | |
| CN215484061U (en) | Combined beam, spliced beam and subway station | |
| CN211689841U (en) | Steel-concrete superposed prefabricated combined beam bridge structure | |
| CN210395070U (en) | A transverse joint system for prefabricated steel-concrete composite beams | |
| CN211446560U (en) | Prestressed concrete-steel composite beam | |
| CN209941473U (en) | Embedded pier bent cap and girder connection structure | |
| CN109958050B (en) | Improved light modular steel-concrete combined small box girder simply-supported bridge | |
| CN205188792U (en) | Prefabricated internal prestressing force steel and concrete composite simply supported girder bridge of assembling of fish belly wave form steel web | |
| CN218881308U (en) | Self-bearing prestressed net rib plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |