CN111893859A - Combined T-shaped bridge deck continuous structure and construction method - Google Patents
Combined T-shaped bridge deck continuous structure and construction method Download PDFInfo
- Publication number
- CN111893859A CN111893859A CN202010779818.3A CN202010779818A CN111893859A CN 111893859 A CN111893859 A CN 111893859A CN 202010779818 A CN202010779818 A CN 202010779818A CN 111893859 A CN111893859 A CN 111893859A
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- bridge deck
- steel bars
- shaped component
- shaped
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a combined T-shaped bridge deck continuous structure and a construction method, wherein mounting notches are reserved on the top surfaces of the end parts of beam plates, and cushion layers are laid at positions for placing prefabricated T-shaped structures in the notches; the prefabricated T-shaped component comprises a vertical web plate, transverse flange plates and connecting steel bars, the vertical web plate is inserted into a gap between adjacent beam plates, the transverse flange plates are placed on the cushion layer, the longitudinal steel bars on the top layer of the beam plates are positioned on the top surface of the prefabricated T-shaped component, the vertical connecting steel bars of the prefabricated T-shaped component are connected with the longitudinal steel bars on the top layer of the beam plates, and the longitudinal steel bars on the top layer of the beam plates and the transverse distribution steel bars are bound to form a steel bar mesh; and joint filling concrete is cast between the side face of the end part of the transverse flange plate and the wall of the groove opening, a bridge deck concrete layer is arranged above the prefabricated T-shaped component and the joint filling concrete, and an asphalt concrete layer is arranged on the bridge deck concrete layer.
Description
Technical Field
The invention relates to the field of bridges, in particular to a combined T-shaped bridge deck continuous structure and a construction method.
Background
In the current situation, the bridge deck is continuous only by arranging continuous steel bars in the concrete pavement layer of the bridge deck, and the thickness of the bridge deck is smaller than that of the main beam and is positioned at the upper edge of the beam-slab supporting end. When the beam plate is bent and deformed, the beam plate needs to bear larger tensile stress and larger tensile strain; when the beam plate is displaced or deformed horizontally, the continuous structure of the bridge deck needs to bear larger compressive stress. Under the alternating action of the stress and the strain, serious diseases such as bridge deck cracking, edge gnawing at a bridge deck joint cutting position, water leakage and the like generally exist at the bridge deck continuous position of a bridge. The occurrence of such diseases not only affects the driving comfort and the structural durability, but also endangers the driving safety if the diseases cannot be processed in time.
On the basis of deep analysis of the occurrence mechanism and the development process of the continuous structure diseases of the simply supported beam slab bridge deck, the stress and deformation characteristics of the continuous structure of the bridge deck are combined, the inventor thinks that the continuous structure diseases of the bridge deck are better solved, the structural durability of the simply supported beam bridge is improved, the application range of the simply supported continuous structure and the bridge deck is further expanded, and the method becomes the most urgent practical requirement.
Disclosure of Invention
Aiming at the common disease condition of the simply supported beam slab bridge deck continuous structure, the invention aims to provide a novel bridge deck continuous structure, which can improve the stress of the bridge deck continuous structure, reduce the structural disease, facilitate the construction and facilitate the maintenance.
The invention aims to provide a combined T-shaped bridge deck continuous structure and a construction method.
In order to realize the purpose, the invention discloses the following technical scheme:
the invention discloses a combined T-shaped bridge deck continuous structure which comprises a beam slab, a prefabricated T-shaped member, cast-in-place joint filling concrete and a bridge deck concrete layer, wherein the beam slab is a hollow slab;
mounting notches are reserved on the top surfaces of the end parts of the beam plates, and cushion layers are laid at positions where the prefabricated T-shaped structures are placed in the notches; the prefabricated T-shaped component comprises a vertical web plate, a transverse flange plate and connecting steel bars, the vertical web plate is inserted into a gap between adjacent beam plates, the transverse flange plate is placed on the cushion layer, the longitudinal steel bars on the top layer of the beam plates are positioned on the top surface of the prefabricated T-shaped component, the vertical connecting steel bars of the prefabricated T-shaped component are connected with the longitudinal steel bars on the top layer of the beam plates, and the longitudinal steel bars on the top layer of the beam plates and the transverse distribution steel bars are bound to form a steel bar mesh; and joint filling concrete is cast between the side face of the end part of the transverse flange plate and the wall of the groove opening, a bridge deck concrete layer is arranged above the prefabricated T-shaped component and the joint filling concrete, and an asphalt concrete layer is arranged on the bridge deck concrete layer.
Furthermore, when the prefabricated T-shaped component is installed in the reserved notch at the end part of the beam plate, the top surface of the prefabricated T-shaped component is lower than the top surface of the beam plate, so that bridge deck pavement concrete poured later is embedded in the notch.
Further, the vertical web plate in the middle of the prefabricated T-shaped component is in a wedge shape with a wide upper part and a narrow lower part, and the specific slope of the vertical web plate is negatively related to the change of the bending span ratio of the beam plate under the action of load.
Furthermore, when the prefabricated T-shaped component is installed in the reserved groove opening, the end part of the flange plate is thickened, namely the thickness of the end part of the flange plate is larger than the thickness of other positions, so that the space below the flange plate of the prefabricated T-shaped component can be increased, the contact area between the end part of the flange plate of the prefabricated T-shaped component and joint filling concrete is not reduced, the actual supporting position of the lower edge of the flange plate can be determined, the leveling treatment is facilitated, and the actual stress of the flange plate is kept consistent with the theoretical calculation.
Furthermore, the top surface of the prefabricated T-shaped component is provided with vertical connecting steel bars, so that bridge deck pavement concrete and the prefabricated T-shaped component are connected into a whole to bear various loads acting on the part.
Furthermore, the longitudinal steel bars on the top surface of the beam slab extend into the reserved notches at the ends of the beam slab for a certain length, the prefabricated T-shaped components are arranged on the prefabricated T-shaped components after being installed in the reserved notches, the longitudinal steel bars on the top surface of the beam slab at the two continuous ends of the bridge deck are connected into a whole through the connecting steel bars, and the longitudinal steel bars and the continuous steel bars in the bridge deck pavement jointly resist the load acting on the parts.
Furthermore, a space with a certain width is reserved between the end part of the flange plate of the prefabricated T-shaped component and the notch, so that the prefabricated T-shaped component is convenient to install, and dense concrete is filled.
In a second aspect, the invention further provides a construction method of the combined type T-shaped bridge deck continuous structure, which comprises the following steps:
firstly, installing a support in place, and erecting a prefabricated beam plate (or pouring a cast-in-place beam plate); cleaning the notches at the end parts of the beam plates, and performing chiseling treatment to ensure the connection quality of the cast-in-place joint filling concrete, the beam plates and the prefabricated T-shaped components; laying a cushion layer at a supporting position corresponding to a transverse flange plate of the prefabricated T-shaped component in a reserved slot at the beam plate end;
and (3) mounting the prefabricated T-shaped component, wherein the prefabricated T-shaped component is accurately positioned in the reserved notch at the end part of the beam slab and is stably placed. The prefabricated T-shaped component is positioned below the longitudinal steel bars on the upper edges of the beam plates, the longitudinal steel bars on the upper edges of the beam plates adjacent to two continuous ends of the bridge deck are connected into a whole through other auxiliary steel bars, and are bound into a net through the transversely distributed steel bars;
after the prefabricated T-shaped component is installed in place, secondary processing and shaping are carried out on the beam plate and the connecting steel bars of the prefabricated T-shaped component, the beam plate and the connecting steel bars of the prefabricated T-shaped component are bound with the transversely distributed steel bars to form a net, the net is bound with the anti-cracking steel bar net in the bridge deck pavement and the bridge deck continuous steel bar net to form a whole, and the positioning is accurate.
Pouring cast-in-place joint filling concrete, vibrating to compact and maintaining; and constructing the bridge deck pavement and the bridge deck continuity.
Compared with the prior art, the invention has the following beneficial effects:
1) the prefabricated T-shaped component is installed in the reserved notch, and after the prefabricated T-shaped component is connected with the bridge deck pavement at the top into a whole, compared with the common scheme, the whole thickness is increased more, when the beam plate is bent and deformed, the beam plate is positioned in a section tension area to bear tension, and the continuous tension stress level of the bridge deck is reduced due to the increase of the thickness.
2) The top surface of the prefabricated T-shaped component is provided with vertical connecting steel bars, the top surface of the prefabricated T-shaped component is lower than the top surface of the beam slab, and meanwhile, the wedge-shaped web plate of the prefabricated T-shaped component is additionally arranged.
3) Thickening the end part of the flange plate of the prefabricated T-shaped component to form a certain space at the bottom of the flange plate; when the beam slab end is upwarped, the normal use of the combined bridge deck continuous structure is not adversely affected.
4) The wedge-shaped web plate provided with the prefabricated T-shaped component continuously supports the bridge deck at the end seam of the beam plate, reduces the stress level in the structural layer at the continuous position of the bridge deck, and can avoid (or delay) the occurrence of bridge deck cracking diseases at the continuous position of the bridge deck.
5) The wedge-shaped web plate of the prefabricated T-shaped component is arranged and extends into the beam end seam of the beam plate, and the structural pattern that the upper part of the wedge-shaped web plate is wide and the lower part of the wedge-shaped web plate is narrow can ensure that the beam plate end seam is always in a filling state when the prefabricated beam plate is subjected to flexural deformation, so that the longitudinal internal force transfer capability of the porous simple-supported beam plate during longitudinal displacement can be enhanced to a certain extent, and the wedge-shaped web plate is not only dependent on a thin bridge deck concrete pavement layer.
6) The leveling cushion layer is arranged on the lower edge of the end part of the prefabricated T-shaped component flange plate, so that the prefabricated T-shaped component can be supported more uniformly under the load action, and the performance of the component can be exerted more favorably without being damaged.
7) Compared with the scheme of the common bridge deck continuous structure, the bridge deck continuous structure has the advantages that the capability of transferring horizontal internal force is enhanced, and the stress level of the bridge deck continuous structure is reduced, so that the number of continuous simply-supported beam slab bridge decks is increased, the bridge deck expansion joints are longer, the number of the bridge deck expansion joints is reduced, and the driving comfort is improved.
8) Because when the beam slab structure construction, all set up the reservation notch at the both ends of a hole beam slab, and no longer distinguish expansion joint position department or bridge floor continuous position department, both ends template type and size have obtained the unity, have made things convenient for the construction, have increased the commonality of template, have increased the turnover frequency of template, have reduced construction cost.
9) When the bridge deck continuous simply supported beam slab adopts the prefabrication construction, the concrete pouring and maintenance quality is guaranteed, the steel bar positioning is accurate, and the installation and the stress of the bridge deck continuous structure are facilitated.
10) Because the prefabricated T-shaped component is arranged, after the beam slab is erected, the prefabricated T-shaped component can be installed, the bridge deck continuous reinforcing mesh and the bridge deck pavement anti-cracking reinforcing mesh are arranged, and after binding and positioning, secondary dead load concrete can be poured, so that the bridge deck pavement construction progress is accelerated, and the construction difficulty of the continuous part of the bridge deck is reduced.
11) The invention is suitable for both prefabricated structures and cast-in-place structures; the method is suitable for the conditions of equal span and unequal span; the method is suitable for the condition that the end seam of the beam plate is narrow and the condition that the end seam of the beam plate is wide.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1, a general structural diagram of a deck continuous structure;
FIG. 2 is a general construction diagram of a prefabricated T-shaped member;
FIG. 3 is a form diagram of a prefabricated (or cast-in-situ) beam plate before a prestressed steel beam is tensioned;
FIG. 4 is a shape diagram of a precast (or cast-in-situ) beam slab after tensioning a prestressed steel beam;
FIG. 5 is a structural diagram of continuous structural steel bars of the bridge deck;
FIG. 6 is a structural diagram of prefabricated T-shaped member steel bars;
in the figure, 1, a beam plate; 2. beam slab end joints; 3. a notch; 4. prefabricating a T-shaped component; 4-1, a flange plate; 4-2, wedge-shaped webs; 4', prefabricating the bottom space of the T-shaped component; 4', a cushion layer; 5. a concrete bridge deck; 6. an asphalt concrete layer; 7. pouring joint filling concrete in situ; 8. prefabricating a bottom surface leveling cushion layer at the end part of the flange plate of the T-shaped component; 9. the top is vertically connected with a steel bar; 9', web vertical steel bars; 10. longitudinal steel bars on the upper edge of the beam slab; 10', prefabricating a T-shaped member longitudinal steel bar; 11. transversely distributing reinforcing steel bars at the continuous position of the bridge deck; 12. paving an anti-crack reinforcing mesh on the bridge deck; 13. the bridge surface is provided with a continuous reinforcing mesh.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", "third", etc., are only used for descriptive purposes and are not intended to indicate or imply relative importance. The term "beam panel" in the present invention refers to a beam or a panel.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, aiming at the common damage condition of the existing bridge deck continuous structure, the invention provides a combined T-shaped bridge deck continuous structure, which can reduce the stress level of the bridge deck continuous structure, reduce the structural damage and accelerate the construction speed of the bridge deck continuous structure; the capability of the bridge deck continuous structure for resisting vertical load can be improved, and the capability of the bridge deck continuous structure for transmitting longitudinal horizontal force can also be improved; the method can be applied to the condition of the same structural type and the condition of different structural types; the same span can be applied, and the unequal span can be applied; meanwhile, the overall connection length of the simply supported beam plate structure can be improved, and the overall driving condition is further improved. The invention will now be further described with reference to the accompanying drawings and detailed description.
Examples
The utility model discloses a modular T type bridge floor continuous structure, it mainly includes beam slab end reserved notch 3, prefabricated T type component 4, concrete bridge floor 5, cast-in-place gap filling concrete 7.
Reserving a mounting notch on the top surface of the end part of the beam plate, and paving a cushion layer at the position where the prefabricated T-shaped structure is mounted in the reserved notch; the prefabricated T-shaped component comprises a vertical web plate, transverse flange plates and connecting steel bars, the vertical web plate is inserted into a gap between every two adjacent beam plates, the transverse flange plates are placed on the cushion layer, the connecting steel bars of the longitudinal steel bars on the upper edge of each beam plate are located on the top surface of the prefabricated T-shaped component and are bound with the distributed steel bars to form a steel bar mesh, a concrete layer is poured at the position, and the concrete layer and the bridge deck pavement concrete layer above the concrete layer are poured simultaneously.
Specifically, when the beam slab 1 is poured, a notch 3 is reserved at the top of the beam end of the beam slab. The inner surface of the notch 3 is smooth to ensure that the continuous prefabricated T-shaped components 4 on the bridge deck are accurately positioned. When the beam slab 1 is constructed, all relevant connecting steel bars are accurately embedded and positioned, and the reserved length meets the connecting requirement.
When the prefabricated T-shaped component 4 is prefabricated, the construction size of the prefabricated T-shaped component is accurate, so that the prefabricated T-shaped component is accurate in positioning, stable in placement and tight in connection during installation; the device comprises a vertical wedge-shaped web plate 4-2 and a transverse flange plate 4-1; a plurality of top vertical connecting steel bars 9 and a plurality of prefabricated T-shaped component longitudinal steel bars 10' which extend to the outside are arranged in the transverse flange plate, the shapes of the steel bars can be directly arranged according to straight steel bars during prefabrication, and secondary processing forming is carried out after the steel bars are installed in place so as to facilitate construction control during prefabrication.
The reserved height of the bottom of the prefabricated T-shaped component 4 is required to meet the deformation requirement of a beam-slab structure, and the influence of construction errors is considered; the inner side of the supporting point is provided with an inverted arc to prevent corner concrete from being crushed due to stress concentration when the supporting point is subjected to relative angular displacement with the top surface of the beam slab, so that the structural function is influenced.
The beam slab 1 is positioned on a construction pedestal or a support before prestress tension, and the form is shown in fig. 3. When the prestressed steel beam is tensioned, the span of the simply supported beam plate is arched upwards, and the shape of the simply supported beam plate is shown in fig. 4; after the prefabricated beam slab is erected on site, the beam slab shape is unchanged as shown in fig. 4, so that the upper part of the beam slab end seam 2 is narrow and the lower part is wide; under external load, the end sections rotate around the neutral axis o point in the middle.
A web vertical reinforcing steel bar 9' and a transverse distribution reinforcing steel bar 11 are arranged in a wedge-shaped web 4-2 of the prefabricated T-shaped component 4; the slope of the wedge-shaped web 4-2 is reasonably determined according to the change condition of the seam width 2 at the end part of the beam plate, so that the wedge-shaped web 4-2 can timely support the flange plate 4-1 when the seam width 2 is slightly changed.
Further, a space with a certain width is reserved between the end part of the flange plate of the prefabricated T-shaped component 4 and the notch and is used for filling dense concrete, and the gap filling concrete 7 corresponds to the cast-in-place gap filling concrete in the drawing; the height of the cast-in-place gap filling concrete 7 is flush with the height of the top of the flange plate of the prefabricated T-shaped component, a concrete bridge surface layer 5 is paved on the tops of the cast-in-place gap filling concrete 7 and the flange plate 4-1 of the prefabricated T-shaped component 4, and an asphalt concrete layer 6 is paved above the concrete bridge surface layer 5.
Further, the embodiment of the invention also discloses a construction method of the combined T-shaped bridge deck continuous structure, which comprises the following specific steps:
firstly, the support is installed in place, and the precast beam plate 1 is erected (or the cast-in-situ beam plate 1 is poured). Cleaning the beam end notch 3, and performing chiseling treatment to ensure the connection quality of the cast-in-place joint filling concrete 7, the beam plate 1 and the prefabricated T-shaped component 4; in the reserved notch 3 of the beam end, a cushion layer 4 is laid at the supporting position corresponding to the flange plate 4-1 of the prefabricated T-shaped component 4, the cushion layer 4' has the characteristics of good workability, strong bonding force, good durability, high strength and the like, and the thickness of the cushion layer is not too large.
And (3) mounting a prefabricated T-shaped component 4, wherein the prefabricated T-shaped component is accurately positioned in the reserved notch 3 at the end part of the beam slab 1 and is stably placed. The prefabricated T-shaped component 4 is positioned below the longitudinal steel bars 10 on the upper edges of the prefabricated beam plates, the longitudinal steel bars 10 on the upper edges of the prefabricated beam plates adjacent to two continuous ends of the bridge deck are connected into a whole through other auxiliary steel bars, and are bound into a net through the transverse distributed steel bars 11 on the continuous positions of the bridge deck
After the prefabricated T-shaped component 4 is installed in place, secondary processing and shaping are carried out on the connecting steel bars of the beam plate 1 and the prefabricated T-shaped component 4, the connecting steel bars and the transverse distributed steel bars 11 at the continuous position of the bridge deck are bound into a net, the net is bound into a whole with the anti-crack steel bar net 12 in the bridge deck pavement and the bridge deck continuous steel bar net 13, and the positioning is accurate. Firstly, pouring cast-in-place joint filling concrete 7, vibrating, compacting and maintaining; and constructing a bridge deck pavement and a bridge deck continuous structure, wherein the bridge deck pavement anti-crack reinforcing mesh 12 and the bridge deck continuous reinforcing mesh 13 are arranged, reinforcing steel bars 11 are transversely distributed at the continuous part of the bridge deck, longitudinal reinforcing steel bars 10 at the upper edge of the prefabricated beam slab are connected and bound into a net-shaped whole, the prefabricated T-shaped component 4 is connected, the prefabricated T-shaped component is ensured to be connected with the reinforcing mesh into a whole through vertical connecting reinforcing steel bars 9 at the top of the prefabricated T-shaped component, and after bridge deck pavement concrete is poured, the combined bridge deck continuous structure is formed together. And after the full-bridge concrete pavement maintenance is finished, constructing a bridge surface waterproof layer and constructing an asphalt concrete pavement layer 6.
Usually, two adjacent bridge spans at the continuous part of the bridge deck are both prefabricated beam slab structures with the same span and the same type, mainly because the prefabricated beam slab structures with different spans and different types have different rigidity, under the action of the same external load, the stress and deformation difference between the two prefabricated beam slab structures is large, and then the continuous structure of the bridge deck is easy to be damaged or even has structural damage.
When one side of the continuous position of the bridge deck is a cast-in-place structure, generally, a bridge span of the cast-in-place structure is firstly constructed, and then a precast beam slab bridge span is erected; if the two spans are cast-in-place structures, the construction sequence of the two adjacent spans is determined according to the construction requirements, the structural complexity or the importance degree and other factors. And reserving required beam end notches during construction, and laying bridge deck continuous connecting reinforcing steel bars. After the installation bridge floor prefabricates T type component 4 in succession, the ligature bridge floor is the reinforcing bar in succession, no matter cast-in-place structure or prefabricated construction this moment, and its top surface all should set up the bridge floor concrete layer of mating formation, both can strengthen the wholeness of prefabricated beam slab structure, can regard as the leveling layer of cast-in-place structure again, still can regard as the continuous integrated structural layer of bridge floor simultaneously.
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.
The bridge deck continuous combined structure is not only suitable for a prefabricated simply supported beam plate structure, but also suitable for a cast-in-place simply supported structure, and is also suitable for the condition that the adjacent bridge spans are different in span and structure type.
Claims (10)
1. A combined T-shaped bridge deck continuous structure is characterized by comprising beam plates, prefabricated T-shaped components and a bridge deck concrete layer;
mounting notches are reserved on the top surfaces of the end parts of the beam plates, and cushion layers are laid at positions where the prefabricated T-shaped structures are placed in the notches; the prefabricated T-shaped component comprises a vertical web plate, a transverse flange plate and connecting steel bars, the vertical web plate is inserted into a gap between adjacent beam plates, the transverse flange plate is placed on the cushion layer, the longitudinal steel bars on the top layer of the beam plates are positioned on the top surface of the prefabricated T-shaped component, the vertical connecting steel bars of the prefabricated T-shaped component are connected with the longitudinal steel bars on the top layer of the beam plates, and the longitudinal steel bars on the top layer of the beam plates and the transverse distribution steel bars are bound to form a steel bar mesh; and joint filling concrete is cast between the side face of the end part of the transverse flange plate and the wall of the groove opening, a bridge deck concrete layer is arranged above the prefabricated T-shaped component and the joint filling concrete, and an asphalt concrete layer is arranged on the bridge deck concrete layer.
2. A modular T-deck continuum structure as claimed in claim 1 wherein the top surface of each prefabricated T-member is below the top surface of the slab when installed in a pre-grooved opening in the slab end.
3. A combined T-shaped bridge deck continuous structure as claimed in claim 1, wherein the vertical web of the prefabricated T-shaped component is in a wedge shape with a wide top and a narrow bottom, and the specific slope of the wedge shape is inversely related to the change of the bending span ratio of the beam plate under the load.
4. A combined T-shaped deck continuous structure as claimed in claim 1 or 3, wherein vertical reinforcing bars and transverse reinforcing bars are arranged in the vertical webs of the prefabricated T-shaped members.
5. A combined type T-shaped deck continuous structure as claimed in claim 1, wherein vertical coupling bars and longitudinal bars extending to the outside are provided in the transverse flange plates of the prefabricated T-shaped members.
6. A modular T-deck continuum structure as claimed in claim 5 wherein the top layer longitudinal rebars extend a length into the beam end rebates.
7. A modular T-deck continuum structure as claimed in claim 1 in which a space of width is reserved between the prefabricated T-member flange plate ends and the rebates and is filled with solid concrete.
8. A modular T-deck continuum structure as claimed in claim 1, wherein the thickness of the transverse flange plate ends of the prefabricated T-section is greater than the thickness elsewhere.
9. A construction method of a combined T-shaped bridge deck continuous structure is characterized by comprising the following steps:
installing the support in place, erecting the prefabricated beam plate or pouring the cast-in-place beam plate, cleaning a beam end notch of the prefabricated beam plate, and performing chiseling treatment; paving a cushion layer in a reserved slot at the beam end corresponding to the supporting position of the transverse flange plate of the prefabricated T-shaped component;
mounting a prefabricated T-shaped component, and accurately positioning the prefabricated T-shaped component in a reserved notch at the end part of the beam slab to be stably placed;
the prefabricated T-shaped component is positioned below the longitudinal steel bars on the upper edges of the beam plates, the longitudinal steel bars on the upper edges of the beam plates adjacent to two continuous ends of the bridge deck are connected into a whole through other auxiliary steel bars, and are bound into a net through the transversely distributed steel bars;
after the prefabricated T-shaped component is installed in place, secondary processing and shaping are carried out on the beam plate and the connecting steel bars of the prefabricated T-shaped component, the beam plate and the connecting steel bars of the prefabricated T-shaped component are bound with the transversely distributed steel bars to form a net, the net is bound with the anti-cracking steel bar net in the bridge deck pavement and the bridge deck continuous steel bar net to form a whole, and the positioning is accurate;
pouring cast-in-place joint filling concrete, vibrating to compact and maintaining; and constructing the bridge deck pavement and the bridge deck continuity.
10. A method of constructing a continuous structure for a modular T-deck as claimed in claim 9, wherein the ends of the transverse flanges are thickened when the prefabricated T-members are installed in the pre-formed slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779818.3A CN111893859B (en) | 2020-08-05 | 2020-08-05 | Combined T-shaped bridge deck continuous structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779818.3A CN111893859B (en) | 2020-08-05 | 2020-08-05 | Combined T-shaped bridge deck continuous structure and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111893859A true CN111893859A (en) | 2020-11-06 |
| CN111893859B CN111893859B (en) | 2022-04-08 |
Family
ID=73245768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010779818.3A Active CN111893859B (en) | 2020-08-05 | 2020-08-05 | Combined T-shaped bridge deck continuous structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111893859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404762A (en) * | 2022-10-10 | 2022-11-29 | 上海市政工程设计研究总院（集团）有限公司 | Pier top longitudinal continuous structure of assembled beam bridge and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474576Y (en) * | 2001-05-09 | 2002-01-30 | 衡水橡胶股份有限公司 | Embedded elasticoplastic body expansion device |
| US20160115657A1 (en) * | 2011-10-27 | 2016-04-28 | Versaflex, Inc. | Waterproof expansion joint |
| CN207062759U (en) * | 2017-08-11 | 2018-03-02 | 上海市城市建设设计研究总院（集团）有限公司 | Structure is longitudinally continuous using the floorings of UHPC clad cans |
| CN109722988A (en) * | 2019-02-25 | 2019-05-07 | 北京市市政工程设计研究总院有限公司 | A kind of shearing resistance bridge floor continuous structure and construction method |
| CN109914235A (en) * | 2019-04-22 | 2019-06-21 | 张建伟 | A kind of bridge floor continuous structure |
-
2020
- 2020-08-05 CN CN202010779818.3A patent/CN111893859B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474576Y (en) * | 2001-05-09 | 2002-01-30 | 衡水橡胶股份有限公司 | Embedded elasticoplastic body expansion device |
| US20160115657A1 (en) * | 2011-10-27 | 2016-04-28 | Versaflex, Inc. | Waterproof expansion joint |
| CN207062759U (en) * | 2017-08-11 | 2018-03-02 | 上海市城市建设设计研究总院（集团）有限公司 | Structure is longitudinally continuous using the floorings of UHPC clad cans |
| CN109722988A (en) * | 2019-02-25 | 2019-05-07 | 北京市市政工程设计研究总院有限公司 | A kind of shearing resistance bridge floor continuous structure and construction method |
| CN109914235A (en) * | 2019-04-22 | 2019-06-21 | 张建伟 | A kind of bridge floor continuous structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404762A (en) * | 2022-10-10 | 2022-11-29 | 上海市政工程设计研究总院（集团）有限公司 | Pier top longitudinal continuous structure of assembled beam bridge and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111893859B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2594158A1 (en) | Bridge construction system and method | |
| CN104929034A (en) | Small modularized steel-concrete rapid-construction box girder bridge and construction method thereof | |
| KR101208231B1 (en) | Method for constructing continuous supporting structure of corrugated steel web PSC beam | |
| CN110700089A (en) | Cast-in-place wet joint structure and bridge | |
| CN108951399A (en) | A kind of Single-box multi-chamber box beam bridge and its construction method | |
| CN110331664B (en) | Steel-concrete mixed continuous box girder bridge deck joint structure and construction method thereof | |
| CN209854529U (en) | Ultra-wide triangular truss type flange assembly type concrete box girder | |
| CN111893859B (en) | Combined T-shaped bridge deck continuous structure and construction method | |
| KR20100003791A (en) | A precast type pre-stress box girder bridge excution method | |
| CN111851264A (en) | Joint connection structure of section steel-UHPC combined plate | |
| KR100621928B1 (en) | Construction method of double composite plate girder railway bridge with precast concrete panels | |
| CN111778835A (en) | Combined beam of steel, common concrete and ultrahigh-performance concrete and construction method | |
| CN114592440B (en) | Upper structure of assembled steel-concrete combined bridge and construction process thereof | |
| CN113123462B (en) | Large-span prestressed concrete assembled frame connecting node and construction method | |
| KR20030094195A (en) | Improved prestressed steel reinforced concrete beam and bridge construction method using the same beam | |
| CN112853916A (en) | Assembled waffle bridge panel combined box girder structure and construction method thereof | |
| CN113073541A (en) | Combined capping beam suitable for continuous bridge deck construction, bridge and construction process | |
| CN109183633A (en) | A kind of existing freely-supported hollow slab bridge structure serialization construction and its construction method | |
| CN220099642U (en) | Perforated steel grid-high-strength concrete cast-in-situ combined bridge deck | |
| CN212388355U (en) | Bridge deck structure of steel truss bridge | |
| CN217810457U (en) | Beam-arch combined structure | |
| CN216891922U (en) | Bridge deck structure at inverted T-shaped cover beam of simply supported steel-concrete composite beam bridge | |
| CN114703734B (en) | Steel-concrete composite girder bridge and construction method | |
| CN212247834U (en) | Joint connection structure of section steel-UHPC combined plate | |
| CN216663756U (en) | Fully-prefabricated pedestrian cable-stayed bridge |
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 | ||
| CB02 | Change of applicant information |
Address after: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant after: Shandong transportation planning and Design Institute Group Co.,Ltd. Address before: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant before: Shandong transportation planning and Design Institute Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |