CN112323619A - Novel hinge joint connecting structure of assembled beam (plate) bridge - Google Patents
Novel hinge joint connecting structure of assembled beam (plate) bridge Download PDFInfo
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- CN112323619A CN112323619A CN202011295277.3A CN202011295277A CN112323619A CN 112323619 A CN112323619 A CN 112323619A CN 202011295277 A CN202011295277 A CN 202011295277A CN 112323619 A CN112323619 A CN 112323619A
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- 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
- E01D19/067—Flat continuous joints cast in situ
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Abstract
The invention relates to a novel hinge joint connecting structure of an assembly type beam (plate) bridge, which comprises an assembly type beam (plate), U-shaped reinforcing steel bars, L-shaped reinforcing steel bars, longitudinal reinforcing steel bars, short transverse reinforcing steel bars, bolts and connecting steel plates. Two bolts are welded with the transverse ribs, the L-shaped reinforcing steel bars are welded with the transverse ribs, the U-shaped reinforcing steel bars are welded on the L-shaped reinforcing steel bars at the upper position and the lower position to form a reinforcing steel bar group, two assembled beams (plates) of a plurality of embedded reinforcing steel bar groups are butted, located on the connecting steel plate and fixed through embedded bolts, the L-shaped reinforcing steel bars are overlapped in an overlapping mode and are bound and fixed, and the longitudinal reinforcing steel bars penetrate through the overlapped U-shaped reinforcing steel bars and are bound and fixed with the U-shaped reinforcing steel bars. The beneficial effects are as follows: the hinge joint runs through the whole section of beam slab bridge, can solve the design and reserve the expansion joint and easily lead to bottom hinge joint concrete fracture problem, improves hinge joint connection quality, and the wholeness of roof beam (board) bridge after the connection is good, and the atress is more even, and the bearing capacity increase, the durability of hinge joint increase, improves the life of roof beam (board) bridge.
Description
Technical Field
The invention relates to the technical field of bridge construction engineering, in particular to a novel hinge joint connecting structure of an assembly type beam (plate) bridge.
Background
With the rapid development of socioeconomic of China, the construction of highway traffic is leapfrog, and bridges serving as connecting links in the highway traffic are large in quantity and high in technical difficulty, and are easy to generate various diseases in use. According to data of '2018 traffic transportation industry development statistics bulletin', the number of bridges in China is on the trend of rising year by year, and most of the bridges are medium and small span bridges. Among the bridges with medium and small span, the fabricated beam (plate) bridge is widely applied to bridge engineering due to the advantages of simple prefabrication, installation and construction process, low engineering cost and the like. The bridge hinge joint plays an important role in transverse connection stress, and is a key part and a weak part. In the actual engineering, because receive design factor, construction factor and service environment factor's influence, the hinge joint takes place to destroy very easily, in case the hinge joint destroys the back, if not in time consolidate, can form gradually and lead to the seam, forms the veneer atress at last and the disease appears and destroys.
At present, a typical conventional hinge joint structure is shown in fig. 4, and the following defects mainly exist:
1) the arrangement of the embedded steel bars is complex, so that the concrete pouring is not facilitated to be vibrated and compacted, the hinge joint quality is not high, and the hidden danger of causing the hinge joint diseases exists;
2) the hinge joint is only limited at the position of a gap reserved for pouring concrete at the upper parts of two butted beam plates, and the connected beam (plate) bridge has poor integrity, poor stress and small bearing capacity, so that the play of the hinge joint effect is influenced;
3) the expansion joint of 1cm is designed and reserved at the bottom of the hinge joint, so that the bottom concrete is easy to crack under the repeated action of vehicle load;
4) the hinge joint has poor durability, and the service life of the beam (plate) bridge is short.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide a novel hinge joint connecting structure of an assembly type beam (plate) bridge, the hinge joint penetrates through the whole section of the beam (plate) bridge, the problem that bottom hinge joint concrete cracks easily due to the design and reservation of an expansion joint can be solved, the hinge joint connecting quality is improved, the integrity of the connected beam (plate) bridge is good, the stress is more uniform, the bearing capacity is increased, the durability of the hinge joint is increased, and the service life of the beam (plate) bridge is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
the novel hinge joint connecting structure of the assembled beam (plate) bridge comprises the assembled beam (plate), U-shaped steel bars, L-shaped steel bars, longitudinal steel bars, short transverse bars, bolts and connecting steel plates, and is characterized in that the bolts are two groups of short transverse bars welded and fixed at the end part of a bolt cap at certain intervals, the end part of one side of each L-shaped steel bar is welded in the middle of the short transverse bar, the other side of each L-shaped steel bar is suspended, the direction of each L-shaped steel bar is consistent with the length direction of the short transverse bar, the two U-shaped steel bars are arranged along the L-shaped steel bars from top to bottom and are welded and fixed with the L-shaped steel bars to form a steel bar group, and the steel bar groups are respectively embedded at the side parts in the width direction of the two assembled beams (plates; the assembly type beam (plate) is in butt joint with the connecting steel plate and is fixedly connected through an embedded bolt, wherein the embedded U-shaped steel bars are overlapped, and the embedded L-shaped steel bars are also overlapped, bound and fixed together; the number of the longitudinal steel bars is 2, and the longitudinal steel bars respectively penetrate through the overlapped U-shaped steel bars and are bound and fixed with the U-shaped steel bars.
The U-shaped steel bar position is not less than 5cm away from the upper surface and the lower surface of the assembly type beam (plate), the length of concrete embedded in the assembly type beam (plate) is not less than 10cm, the length of the extending assembly type beam (plate) is required to ensure that the length of the extending assembly type beam (plate) corresponding to the U-shaped steel bar with the adjacent assembly type beam (plate) is overlapped when the assembly type beam (plate) is lapped and assembled, and the overlapping distance is not less than the diameter of the longitudinal steel bar.
The distance between the position of the L-shaped steel bar and the upper surface of the assembled beam (plate) is not less than 5cm, the length of concrete embedded in the assembled beam (plate) is not less than 10cm, the length of the extending assembled beam (plate) is required to ensure that the length of the extending assembled beam (plate) corresponding to the L-shaped steel bar of the adjacent assembled beam (plate) is overlapped when the assembled beam (plate) is lapped and assembled, and the overlapping distance is not less than 10 cm.
The diameter of the longitudinal steel bar is the same as that of the embedded steel bar of the assembly type beam (plate), the length of the longitudinal steel bar penetrates through the length of the assembly type beam (plate), and the distance between the two end parts and the outer surface of the assembly type beam (plate) in the length direction is not less than 5 cm.
And the connecting steel plate is provided with a mounting long hole matched with the bolt.
Compared with the prior art, the invention has the beneficial effects that:
1) the arrangement of the reinforcing steel bars is more simplified and effective than the arrangement of the traditional hinge joint reinforcing steel bars, so that the vibration compaction is facilitated, the construction quality of the hinge joint is effectively ensured, and the damage of the hinge joint caused by the construction quality problem is avoided;
2) compared with the traditional hinge joint, the novel hinge joint and the assembled beam (plate) form a whole which is firmer, the whole stress performance is better, the hinge joint function can be better played, and the hinge joint diseases are reduced;
3) compared with the traditional hinge joint, the novel hinge joint device is provided with the steel plate and the bolt for anchoring at the lower part of the assembled beam (plate), the tensile strength of the steel plate is high, the problem of concrete cracking can be well solved, and meanwhile, the bearing capacity and the shear strength of the hinge joint device are remarkably improved;
4) by carrying out comparative analysis on the traditional hinge joint and the novel hinge joint, taking an 8m standard span hollow plate and taking a test piece with a length of 0.5m and a reduced size as an example for testing, the novel hinge joint is obtained, and compared with the traditional hinge joint, the bearing capacity of the novel hinge joint is improved by at least 42%; by comparing the deflection of the two hinge joint test piece supports and the deflection of the bottom of the hinge joint, the deflection of the novel hinge joint test piece is always smaller than that of the traditional hinge joint test piece under the same load; the deflection at the position of the novel hinge joint support is reduced by 30.01 percent, and the deflection at the bottom of the hinge joint is reduced by 31.37 percent, which shows that the deformation resistance of the novel hinge joint is improved by at least 30 percent; in conclusion, the novel hinge joint is far superior to the traditional hinge joint in both hinge joint bearing capacity and deformation resistance, and can play a role in transferring transverse load.
Drawings
FIG. 1 is a schematic diagram of the structural principle of the present invention;
FIG. 2 is a schematic perspective view (cut away) of the structural principles of the present invention;
FIG. 3 is a schematic view of the connection relationship structure of the embedded steel bar group according to the present invention;
fig. 4 is a schematic diagram of a conventional hinge joint structure.
In the figure: 1-bridge deck pavement layer 2-fabricated beam (plate) 3-U-shaped steel bar 4-L-shaped steel bar 5-longitudinal steel bar 6-short transverse bar 7-bolt 8-connecting steel plate
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-fig. 3, the novel hinge joint connection structure for the assembled beam (plate) bridge according to the present invention includes an assembled beam (plate) 2, U-shaped reinforcements 3, L-shaped reinforcements 4, longitudinal reinforcements 5, short transverse reinforcements 6, bolts 7 and a connection steel plate 8, where the bolts 7 are two groups of bolts welded and fixed at the end of a bolt cap at a certain interval by the short transverse reinforcements 6, the end of one side of each L-shaped reinforcement 4 is welded to the middle of the short transverse reinforcements 6, the other side of each L-shaped reinforcement 4 is suspended, and the direction of each L-shaped reinforcement is the same as the length direction of the short transverse reinforcements 6, the two U-shaped reinforcements 3 are arranged up and down along the L-shaped reinforcements 4 and welded and fixed to the L-shaped reinforcements 4 to form a reinforcement group, and the plurality of reinforcement groups are respectively embedded at the side portions in the width direction of the two assembled beam (plate); the assembly type beam (plate) 2 is in butt joint with a connecting steel plate 8 and is fixedly connected through an embedded bolt 7, wherein the embedded U-shaped steel bars 3 are overlapped, and the embedded L-shaped steel bars 4 are also overlapped, bound and fixed together; the number of the longitudinal steel bars 5 is 2, and the longitudinal steel bars respectively penetrate through the overlapped U-shaped steel bars 3 and are bound and fixed together with the U-shaped steel bars.
The distance between the position of the U-shaped steel bar 3 and the upper surface and the lower surface of the assembly type beam (plate) 2 is not less than 5cm (enough safety layer concrete thickness is reserved), the length of concrete embedded in the assembly type beam (plate) 2 is not less than 10cm, the length of the extending assembly type beam (plate) 2 is ensured to be overlapped with the length of the extending assembly type beam (plate) of the U-shaped steel bar 3 corresponding to the adjacent assembly type beam (plate) 2 during the overlapping and assembling, the overlapping distance is not less than the diameter of the longitudinal steel bar 5, the longitudinal steel bar 5 can be easily inserted, and the overlapping quality is ensured.
The distance between the position of the L-shaped steel bar 4 and the upper surface of the assembled beam (plate) 2 is not less than 5cm (enough safety layer concrete thickness is reserved), the length of concrete embedded in the assembled beam (plate) 2 is not less than 10cm, the length of the extending assembled beam (plate) 2 is equal to or more than 10cm, the length of the extending assembled beam (plate) 2 corresponding to the L-shaped steel bar 4 corresponding to the adjacent assembled beam (plate) 2 during the overlapping and assembling process is ensured to be overlapped, the overlapping distance is not less than 10cm, and the binding quality is ensured.
The diameter of the longitudinal steel bars 5 is the same as that of embedded steel bars of the assembly type beam (plate) 2, the length of the longitudinal steel bars penetrates through the length of the assembly type beam (plate) 2, the distance between the two end parts and the outer surface of the assembly type beam (plate) 2 in the length direction is not less than 5cm, and the thickness of concrete on a safety layer is enough.
And the connecting steel plate 8 is provided with a mounting long hole matched with the bolt 7, so that the position of the bolt 7 can be adjusted when the assembled beam (plate) 2 is conveniently hoisted.
The field installation and construction process comprises the following steps:
1) the connecting steel plate 8 is located on the bridge pier;
2) respectively hoisting the assembled beams (plates) 2 of the two embedded steel bar groups, so that the embedded bolts 7 pass through the mounting long holes formed in the connecting steel plates 8 and are in butt joint with the connecting steel plates 8;
3) binding and fixing the overlapped and overlapped pre-embedded L-shaped steel bars 4 together, and respectively penetrating the 2 longitudinal steel bars 5 through the overlapped U-shaped steel bars 3 and binding and fixing the same together;
4) screwing a bolt 7 and a nut to be fixed with the connecting steel plate 8 to complete the hinge joint lap joint;
5) pouring concrete at the hinge joint;
6) and pouring the bridge deck pavement layer 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The novel hinge joint connecting structure of the assembled beam (plate) bridge comprises the assembled beam (plate), U-shaped steel bars, L-shaped steel bars, longitudinal steel bars, short transverse bars, bolts and connecting steel plates, and is characterized in that the bolts are two groups of short transverse bars welded and fixed at the end part of a bolt cap at certain intervals, the end part of one side of each L-shaped steel bar is welded in the middle of the short transverse bar, the other side of each L-shaped steel bar is suspended, the direction of each L-shaped steel bar is consistent with the length direction of the short transverse bar, the two U-shaped steel bars are arranged along the L-shaped steel bars from top to bottom and are welded and fixed with the L-shaped steel bars to form a steel bar group, and the steel bar groups are respectively embedded at the side parts in the width direction of the two assembled beams (plates; the assembly type beam (plate) is in butt joint with the connecting steel plate and is fixedly connected through an embedded bolt, wherein the embedded U-shaped steel bars are overlapped, and the embedded L-shaped steel bars are also overlapped, bound and fixed together; the number of the longitudinal steel bars is 2, and the longitudinal steel bars respectively penetrate through the overlapped U-shaped steel bars and are bound and fixed with the U-shaped steel bars.
2. The novel hinge joint connecting structure of assembled beam (plate) bridge according to claim 1, wherein the U-shaped steel bars are located at a distance of not less than 5cm from the upper and lower surfaces of the assembled beam (plate), the length of the embedded assembled beam (plate) concrete is not less than 10cm, the length of the extending assembled beam (plate) is ensured to be overlapped with the length of the extending assembled beam (plate) of the corresponding U-shaped steel bar of the adjacent assembled beam (plate) during the overlapping, and the overlapping distance is not less than the diameter of the longitudinal steel bar.
3. The novel hinge joint connecting structure of assembled beam (plate) bridge according to claim 1, wherein the L-shaped steel bar is located at a distance of not less than 5cm from the upper surface of the assembled beam (plate), the length of the embedded assembled beam (plate) concrete is not less than 10cm, the length of the extending assembled beam (plate) is such that the length of the extending assembled beam (plate) corresponding to the L-shaped steel bar of the adjacent assembled beam (plate) is overlapped with the length of the extending assembled beam (plate) when the assembled beam (plate) is assembled, and the overlapping distance is not less than 10 cm.
4. The novel hinge joint connecting structure of the assembly type beam (plate) bridge as claimed in claim 1, wherein the diameter of the longitudinal steel bar is the same as that of the embedded steel bar of the assembly type beam (plate), the length of the longitudinal steel bar runs through the length of the assembly type beam (plate), and the distance between the two end parts and the outer surface of the assembly type beam (plate) in the length direction is not less than 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011295277.3A CN112323619A (en) | 2020-11-18 | 2020-11-18 | Novel hinge joint connecting structure of assembled beam (plate) bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011295277.3A CN112323619A (en) | 2020-11-18 | 2020-11-18 | Novel hinge joint connecting structure of assembled beam (plate) bridge |
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| CN112323619A true CN112323619A (en) | 2021-02-05 |
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| CN202011295277.3A Pending CN112323619A (en) | 2020-11-18 | 2020-11-18 | Novel hinge joint connecting structure of assembled beam (plate) bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106870A (en) * | 2021-03-29 | 2021-07-13 | 泉州市中原盛辉地产代理有限公司 | Construction method of assembled integral hollow slab bridge |
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2020
- 2020-11-18 CN CN202011295277.3A patent/CN112323619A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106870A (en) * | 2021-03-29 | 2021-07-13 | 泉州市中原盛辉地产代理有限公司 | Construction method of assembled integral hollow slab bridge |
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