CN111155410A - Continuous bridge floor and medium and small span continuous rigid frame composite structure - Google Patents
Continuous bridge floor and medium and small span continuous rigid frame composite structure Download PDFInfo
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- CN111155410A CN111155410A CN202010058650.7A CN202010058650A CN111155410A CN 111155410 A CN111155410 A CN 111155410A CN 202010058650 A CN202010058650 A CN 202010058650A CN 111155410 A CN111155410 A CN 111155410A
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- pier
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- rigid frame
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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
- E01D1/00—Bridges in general
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a continuous bridge deck and medium and small span continuous rigid frame combined structure which comprises a plurality of pile structures, pier structures arranged on the pile structures and beam structures arranged on the pier structures, wherein three adjacent pile structures form a group of supporting structures, two adjacent groups of supporting structures share one pile structure, the beam structure is divided into a plurality of sections, each section of beam structure is correspondingly arranged on one group of supporting structures, and a solid seamless expansion joint structure is arranged between the adjacent beam structures. The invention has the beneficial effects that: according to the scheme, the seamless expansion joint structure is arranged between the adjacent beam structures, the space required by the deformation of the beam structures is provided by utilizing the seamless expansion joint structure through self compression deformation, and the solid structure is formed between the adjacent beam structures, so that the noise and vibration generated when a vehicle passes are avoided, and the driving comfort is prevented from being influenced; the continuous rigid frame structure is adopted, the support is avoided being arranged, and the steel pile casing is arranged on the outer side of the semicircular pier to prevent the pier from cracking.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a continuous bridge deck and medium and small span continuous rigid frame combined structure.
Background
Under the condition of the prior art, the bridge needs to use an expansion joint structure to provide a reserved space required by the expansion and contraction deformation of the bridge. Use the expansion joint to need design corresponding waterproof construction, avoid the rainwater to enter into the expansion joint and cause the corruption to bridge inside, also avoid large granule impurity to enter into the expansion joint in cause the jam and influence the expansion joint normal use, increased the degree of difficulty and the cost of construction to need inspect, maintain in the later stage, increase the work load and the cost of maintaining. In the driving process of the vehicle, the expansion joint causes the vehicle to bump, and the driving comfort and the safety are reduced.
Under the prior art conditions, the beam structure and the pier structure are usually connected using a support so as to reliably transfer the load and deformation borne by the beam structure to the pier structure. But use the support can reduce beam structure and pier structure's joint strength and rigidity, reduced girder structure antidumping ability, under the condition of girder unbalance loading, there is the risk that the girder topples. The pedestal structure also requires periodic inspection and maintenance during later use, which results in additional effort and cost.
Meanwhile, most of the existing medium-small span continuous beam bridge structures adopt transverse bridge direction double-column piers or transverse bridge direction single-column piers and double-column piers which are used in a crossed mode, and most of the piers are rectangular piers. When the urban bridge adopts the structure form, excessive piers generate a 'pillar forest' effect, the permeability under the bridge and the overall landscape of the city are influenced, and the utilization of the space under the bridge is greatly limited; for the underwater bridge, the water-blocking rate of water flow is greatly increased and the navigation space and the permeability under the bridge are reduced by adopting the structural form.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a continuous bridge deck and medium-small span continuous rigid frame combined structure, which is used for realizing full-continuous seamless of the bridge deck, ensuring that the travelling comfort is not influenced when a vehicle passes continuously, reducing the noise pollution, reducing the workload of maintenance in the operation period and fundamentally avoiding the bridge from overturning.
The invention is realized by the following technical scheme: the utility model provides a continuous bridge floor and continuous rigid frame integrated configuration of well little span, includes a plurality of pile structure, sets up the mound structure on the pile structure and sets up the beam structure on mound structure, at least three adjacent mound structure is a set of bearing structure, adjacent two sets of bearing structure sharing a pile structure, beam structure divide into a plurality of section, every section beam structure corresponds the setting on a set of bearing structure, is provided with the seamless expansion joint structure of entity between the adjacent beam structure.
Further, in order to better realize the invention, the pier structure is fixedly connected with the beam structure.
Further, in order to better realize the invention, the pier structure comprises semi-circular piers and full-circular piers, the group of support structures comprises two semi-circular piers and at least one full-circular pier, and the full-circular pier is arranged between the two semi-circular piers.
Further, in order to better realize the invention, the pier structure is a single-column pier in the transverse bridge direction.
Further, in order to better realize the invention, the semi-circular pier is provided with a steel casing sleeved on the semi-circular pier.
Further, in order to better realize the invention, the inner side of the steel casing is provided with a connecting key. Meanwhile, the inner side and the outer side of the steel casing extending into the beam structure and the pile structure are provided with connecting keys.
Furthermore, in order to better realize the invention, the seamless expansion joint structure is made of solid elastic materials.
The beneficial effect that this scheme obtained is: this scheme sets up seamless expansion joint structure between adjacent beam structure, utilizes seamless expansion joint structure to warp through self pressurized and provides the required space of beam structure deformation to form the entity structure between adjacent beam structure, produce noise and vibration when avoiding the vehicle to pass, avoid driving the travelling comfort to receive the influence. This scheme adopts continuous rigid frame, improves the bulk rigidity and the antidumping ability of structure, avoids setting up the support, reduces construction and maintenance cost. The scheme adopts the single-column pier with the circular section, reduces the number of bridge piers, reduces the visual 'pillar-forest' effect, enables the landscape of a bridge or a city to be better, and also improves the space under the bridge; for the bridge in water, a round pier single-column structure is adopted, so that the water blocking rate of water flow is effectively reduced, and the navigation space and the permeability of the bridge are improved.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural view of example 6;
FIG. 3 is a schematic structural diagram of a steel casing;
wherein, the expansion joint structure comprises 1-pile structure, 2-pier structure, 21-semi-circular pier, 22-circular pier, 23-steel pile casing, 24-connecting key, 3-beam structure and 4-seamless expansion joint structure.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
as shown in fig. 1, in this embodiment, a continuous bridge deck and medium-small span continuous rigid frame composite structure includes a plurality of pile structures 1, pier structures 2 disposed on the pile structures 1, main beam structures 3 disposed on the pier structures 2, and a seamless expansion joint structure 4. At least three adjacent pile structure 1 is a set of bearing structure, and adjacent two sets of bearing structure share a pile structure 1, girder structure 3 divide into a plurality of section, each section girder structure 3 corresponds the setting on a set of bearing structure, is provided with the seamless expansion joint structure 4 of entity between the adjacent girder structure 3.
In this embodiment, at first construction pile structure 1, use pile structure 1 to be foundation construction mound structure 2 again, use mound structure 2 to be foundation construction girder structure 3, because need reserve the space between girder structure 3 and the girder structure 3 and warp in order to adapt to, this scheme sets up seamless expansion joint structure 4 between adjacent girder structure 3, utilizes seamless expansion joint structure 4 to provide girder structure 3 through self compressive deformation and warp required space. And adopt seamless expansion joint structure 4 to form solid structure between adjacent girder structure 3, produce noise and vibration when avoiding the vehicle to pass, avoid the driving travelling comfort to receive the influence. Because seamless expansion joint structure 4 adopts the entity structure, can effectively prevent impurity such as moisture, dust, granule from getting into, can save the step of construction seal structure, be favorable to simplifying the construction procedure, reduce the construction degree of difficulty, improve the efficiency of construction to reduce the degree of difficulty and the cost of later maintenance, maintenance.
In this embodiment, three pier structures 2 are selected as a group of support structures, the main beam structure 3 can be supported from the two ends and the middle point of the main beam structure 3, the stability of the main beam structure 3 can be ensured, and when the main beam structure 3 and the pier structures 2 are deformed due to expansion with heat and contraction with cold, contraction with creep and the like, the main beam structure 3 and the pier structures 2 have enough space to adapt to the shape and position changes of the pier structures.
In this embodiment, the support structure can also be a group of four or more pier structures 2, so that the stability and the bearing capacity of the main beam structure 3 and the pier structures 2 can be enhanced.
In this embodiment, the seamless expansion joint structure 4 is made of a solid elastic material. Utilize elastic material to be convenient for bear pressure, because the pressurized deformation and reserve the space for main girder structure 3's displacement, deformation, after main girder structure 3 resumes, seamless expansion joint structure 4 can also utilize the elasticity of self to recover automatically.
Example 2:
on the basis of the above embodiments, in the present embodiment, the pier structure 2 is fixedly connected with the main beam structure 3. In this embodiment, the pier structure 2 and the main beam structure 3 are both concrete structures, and after the main beam structure 3 is poured, the main beam structure can be gradually connected with the pier structure 2 in the solidification process to form a whole, so that the pier structure 2 and the main beam structure 3 are fixedly connected.
And after the construction of the main beam structure 3 is finished, constructing a bridge floor on the upper surface of the main beam structure 3. Under the prior art condition, during construction girder structure 3, can set up the support between mound structure 2 and girder structure 3, utilize support connection mound structure 2 and girder structure 3 can reduce mound structure 2 and girder structure 3's joint strength, when the vehicle is current at the bridge floor, if the vehicle on the both sides lane distributes unevenly and when leading to the unbalance loading, the bridge floor then can have the risk of toppling to the side because of the atress is uneven.
Make mound structure 2 and girder structure 3 fixed connection can increase the joint strength and the rigidity between mound structure 2 and the girder structure 3 to can increase the bearing capacity and the antidumping ability of bridge floor, improve bridge floor structure's stability, avoid the bridge floor to topple.
Because the support structure is omitted, the operations of maintenance, repair, replacement and the like of the support in the later period are avoided, the maintenance cost is reduced, and the traffic capacity of the bridge is prevented from being limited.
And the girder structure 3 is connected with the pier structure 2 in a consolidation mode, so that the shear strength of the joint of the girder structure 3 and the pier structure 2 can be enhanced, the accidents that the girder structure 3 and the pier structure 2 move relatively and are staggered at the support due to the existence of the support due to factors such as earthquake action and the like are avoided, and the safety performance of the bridge is improved.
The vehicle is driven from the main beam structure 3 on one group of supporting structures to the main beam structure 3 on the other group of supporting structures, under the action of the gravity of the vehicle, the front main beam structure 3 bears the pressure from the front part of the vehicle, so that one end of the main beam structure 3, which is close to the vehicle, has a downward rotating movement trend, and the rear main beam structure 3 bears the pressure from the rear part of the vehicle, so that the downward rotating movement trend exists, and the vehicle can generate obvious fall and vibration in the driving process.
In this embodiment, make girder structure 3's both ends and 2 fixed connection of mound structure, can increase the vertical rigidity and the stability of structure to avoid girder structure 3's tip to receive pressure and rotate, improve the driving travelling comfort, avoid changing the support, reduce later stage operation maintenance work load greatly.
Example 3:
in the embodiment shown in fig. 1, when the three pier structures 2 are a group of support structures, the pier structures 2 include semi-circular piers 21 and full-circular piers 22, and the group of support structures includes two semi-circular piers 21 and a full-circular pier 22, and the full-circular pier 22 is arranged between the two semi-circular piers 21.
In this embodiment, the radius of the semicircular pier 21 is the same as that of the full-circle pier 22, and on the shared pile structure 1, the two semicircular piers 21 can be assembled into the completed full-circle pier 22, so that the appearance consistency of all the pier structures 2 can be ensured, and the whole pier structures 2 are uniformly stressed and keep attractive appearance. When mound structure 2 is used for the waters, because whole circular mound 22 is cylindrical, two semicircle mounds 21 also can make up and form cylindrically, can reduce mound structure 2's the water-blocking rate to be favorable to reducing the water impact that mound structure 2 bore, with the stability of guaranteeing mound structure 2. In a similar manner, the pier structure 2 can reduce the resistance to wind, thereby reducing the wind pressure borne by the pier structure 2.
Under the longer condition of girder construction 3's length, bearing structure chooses for use four mound structures 2 as a set of, and whole round mound 22 is equipped with two and is located between two semicircle mounds 21, and whole round mound 22 is used for bearing the most pressure that comes from girder construction 3, adopts two whole round mounds 22 can strengthen the holistic stability of bridge construction and rigidity to disperse girder construction 3 decurrent pressure, reduce the pressure that whole round mound 22 bore, be favorable to improving the security performance of bridge.
On the shared pile structure 1, the space between the two semicircular piers 21 can be filled with filler to maintain the structural integrity, and the filler can be made of the same material as the seamless expansion joint structure 4.
Example 4:
on the basis of the above embodiment, in the present embodiment, the four pier structures 2 are single columns in the transverse bridge direction. The design can reduce the number of piers of the full bridge. Adopt this type of structural design to the bridge in the city, can improve the pedestrian greatly and when seeing the bridge from the angle of difference, avoid looking at a glance to go all to be the pier stud to promoted the underbridge space, avoided the sensation of pressing for the pedestrian, generally see, the view is effectual. For bridges in rivers, the number of piers is reduced, so that the water resistance of the river is reduced, and the navigation space and the permeability of the river are improved.
Example 5:
on the basis of the above embodiment, in this embodiment, the upper surface of the main beam structure 3 is flush with the seamless expansion joint structure 4. If the upper surface of the seamless expansion joint structure 4 is higher than the upper surface of the main beam structure 3, a bulge is formed on the bridge floor, and vibration or noise is generated when a vehicle passes.
Example 6:
as shown in fig. 2, in the present embodiment, on the basis of the above embodiment, a steel casing 23 is disposed outside the half-round pier 21, and the steel casing extends into the pile structure 1 and is cast and fixed with the main beam structure 3.
When the main beam structure 3 is affected by temperature change to cause expansion, the main beam structure 3 applies bending moment to the semi-circular pier 21, and the end parts of the two ends of the semi-circular pier 21 are easy to crack due to large stress.
In this embodiment, when the main beam structure 3 applies a bending moment to the semicircular pier 21, the steel casing 23 is stressed, and the steel casing 23 can bear a large bending moment, so that the end of the semicircular pier 21 is protected from cracking, and the durability of the structure is improved.
In this embodiment, the steel casing 23 is made of steel and attached to the semicircular pier 21, so as to ensure the strength and rigidity of the steel casing 23.
As shown in fig. 3, in the present embodiment, the steel casing 23 is provided with a connecting key 24 inside, wherein the steel casing of the half-round pier 21 is provided with only the inside connecting key 24, the steel casing extends into the pile structure 1 and the main beam structure 3, and the connecting key 24 is provided on both the inside and the outside. When the semicircular pier 21 is poured, the connecting key 24 is poured together with the semicircular pier 21 to increase the bonding force of the steel casing 23 and concrete.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a continuous bridge floor and continuous rigid frame integrated configuration of well little span, includes a plurality of pile structure (1), sets up mound structure (2) on pile structure (1), sets up beam structure (3) and entity seamless expansion joint structure (4) on mound structure (2), its characterized in that: at least three adjacent mound structure (2) are a set of bearing structure, adjacent two sets of bearing structure sharing pile structure (1), beam structure (3) divide into a plurality of section, every section beam structure (3) correspond and set up on a set of bearing structure, set up entity seamless expansion joint structure (4) between adjacent beam structure (3).
2. The continuous bridge deck and medium and small span continuous rigid frame composite structure of claim 1, wherein: the pier structure (2) is fixedly connected with the beam structure (3).
3. A continuous bridge deck and medium and small span continuous rigid frame composite structure according to claim 2, wherein: pier structure (2) be circular pier, including semicircle pier (21) and whole circle pier (22), including two semicircle piers (21) and at least one whole circle pier (22) in a set of bearing structure, whole circle pier (22) set up between two semicircle piers (21).
4. A continuous bridge deck and medium and small span continuous rigid frame composite structure according to claim 3, wherein: the pier structure (2) is a single-column pier in the transverse bridge direction.
5. A continuous bridge deck and medium and small span continuous rigid frame composite structure as claimed in claim 3 or 4, wherein: the semi-circular pier (21) is provided with a steel pile casing (23) sleeved on the semi-circular pier (21).
6. A continuous bridge deck and medium and small span continuous rigid frame composite structure according to claim 5, wherein: the inner side of the steel pile casing (23) is provided with a plurality of connecting keys (24) poured with the semicircular piers (21), wherein the inner side of the steel pile casing (23) of the pier body part is only provided with the connecting keys (24), and the inner side and the outer side extending into the pile structure (1) and the beam structure (3) are both provided with the connecting keys (24).
7. A continuous bridge deck and medium and small span continuous rigid frame composite structure as claimed in any one of claims 1, 2, 3, 4 and 6, wherein: the seamless expansion joint structure (4) is made of solid elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010058650.7A CN111155410A (en) | 2020-01-19 | 2020-01-19 | Continuous bridge floor and medium and small span continuous rigid frame composite structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010058650.7A CN111155410A (en) | 2020-01-19 | 2020-01-19 | Continuous bridge floor and medium and small span continuous rigid frame composite structure |
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| CN111155410A true CN111155410A (en) | 2020-05-15 |
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| CN202010058650.7A Pending CN111155410A (en) | 2020-01-19 | 2020-01-19 | Continuous bridge floor and medium and small span continuous rigid frame composite structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931058A (en) * | 2021-12-01 | 2022-01-14 | 浙江数智交院科技股份有限公司 | Integral seamless long connecting structure for bridge |
-
2020
- 2020-01-19 CN CN202010058650.7A patent/CN111155410A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931058A (en) * | 2021-12-01 | 2022-01-14 | 浙江数智交院科技股份有限公司 | Integral seamless long connecting structure for bridge |
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Effective date of registration: 20210908 Address after: 100010 Hutong 33 in front of East Fourth east of Dongcheng District, Beijing Applicant after: CCCC Highway Consultants Co.,Ltd. Applicant after: CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 100010 Hutong 33 in front of East Fourth east of Dongcheng District, Beijing Applicant before: CCCC Highway Consultants Co.,Ltd. |