CN112376400B - Wet joint structure of precast concrete beam and construction process thereof - Google Patents
Wet joint structure of precast concrete beam and construction process thereof Download PDFInfo
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- CN112376400B CN112376400B CN202011234502.2A CN202011234502A CN112376400B CN 112376400 B CN112376400 B CN 112376400B CN 202011234502 A CN202011234502 A CN 202011234502A CN 112376400 B CN112376400 B CN 112376400B
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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
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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
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Abstract
The utility model relates to a wet seam structure of precast concrete roof beam relates to wet seam connection structure's technical field, and it includes the concrete beam of double-phase adjacent setting and sets up the wet seam between two concrete beams, and the one end that two concrete beams set up in opposite directions all is provided with the connection end, still includes: the left side and the right side of the prefabricated supporting plate are respectively connected with one side face of each of the two opposite concrete beams, and the left end and the right end of the prefabricated supporting plate are arranged in an upward bending mode; the connecting reinforcing steel bars are arranged along the width direction of the wet joint, each connecting reinforcing steel bar extends along the length direction of the prefabricated supporting plate, and each connecting reinforcing steel bar penetrates through the end part of the prefabricated supporting plate and is connected with the connecting end; and the pouring part is formed by solidifying concrete poured in the wet joint. This application has the effect that improves wet joint whole efficiency of construction and receives the template and use the influence.
Description
Technical Field
The application relates to the technical field of wet joint connection structures, in particular to a wet joint structure of a precast concrete beam and a construction process of the wet joint structure.
Background
The wet joint is characterized in that prestressed concrete beams are prefabricated in blocks, cantilevers are spliced into long-span continuous beams, the beams are connected into an integral joint by cast-in-place concrete, the joint belongs to a roadway plate in terms of stress, reinforcing steel bars arranged in the wet joint are generally dozens of centimeters wide (the width of the wet joint of a bridge is 50-95 centimeters different), the wet joint is located in the transverse connection of the concrete beams, longitudinal ribs are penetrated in the middle of hoops to enable the bridge deck to form a whole, and concrete with the same mark number as the beams is poured.
In the related art, in order to ensure the safety of concrete pouring, templates need to be installed on the lower side and the left and right sides of a wet joint, a groove for concrete pouring and solidification can be formed by enclosing all the templates, and after the concrete is solidified, all the templates are detached by workers.
Aiming at the related technologies, the inventor finds that the template is installed between two adjacent concrete beam bodies in a mode of hoisting the template and penetrating and oppositely pulling, so that the template is very difficult to dismantle in the later period, and the overall construction efficiency is seriously influenced.
Disclosure of Invention
First aspect, receive the problem that the influence was used to the template in order to improve wet joint whole efficiency of construction, this application provides a wet joint structure of precast concrete roof beam, adopts following technical scheme:
the utility model provides a wet seam structure of precast concrete roof beam, includes the concrete beam of two adjacent settings and sets up the wet seam between two concrete beams, two the one end that the concrete beam set up in opposite directions all is provided with the connection end, still includes:
the left side and the right side of the prefabricated supporting plate are respectively connected with one side face of each of the two opposite concrete beams, and the left end and the right end of the prefabricated supporting plate are arranged in an upward bending mode;
the connecting reinforcing steel bars are arranged along the width direction of the wet joint, each connecting reinforcing steel bar extends along the length direction of the prefabricated supporting plate, and each connecting reinforcing steel bar penetrates through the end part of the prefabricated supporting plate and is connected with the connecting end;
and the pouring part is formed by solidifying concrete poured in the wet joint.
Through adopting above-mentioned technical scheme, prefabricated layer board can regard as the template to use to make the concrete can pour in wet seam in order to form the portion of pouring, after the portion of pouring complete molding, prefabricated layer board can regard as wet seam connection structure's a part, consequently need not to do the template and demolish work, effectively ensure the efficiency of construction, utilize the cooperation between connecting reinforcement and the connection end to ensure the joint strength between prefabricated layer board and the concrete beam, make the prefabricated layer board need not to be fixed in the wet seam that the opposite-pulling pole can be firm.
Preferably, the connecting ends are formed by continuously bending reinforcing steel bars twice, the part of each connecting end extending out of the concrete beam is arranged in an Contraband shape, and two ends of each connecting end are fixed with the concrete beam.
Through adopting above-mentioned technical scheme, can form the connection end that is "Contraband" word form setting through the shaping of buckling twice of reinforcing bar for the length of connecting the end increases, thereby makes the connection end can have more contact points with the reinforcing bar, and with the comparatively even distribution of the application of force of contact point in the upper and lower both sides of concrete beam.
Preferably, two homogeneous body shaping has the wedge to drag on the side that the concrete beam set up in opposite directions, the wedge drags and sets up in the downside of concrete beam, all be provided with on the left and right sides of prefabricated layer board with the wedge drag upper surface complex inclined plane.
Through adopting above-mentioned technical scheme, drag through the wedge and the cooperation between the inclined plane for concrete beam can restrict the position of placing of prefabricated layer board, and the prefabricated layer board location of being convenient for is placed.
Preferably, the wet joint further comprises a plurality of high-strength cushions, each high-strength cushion is uniformly distributed on each inclined surface, and when the prefabricated supporting plate is installed in the wet joint, the lower surface of each high-strength cushion is attached to the wedge-shaped surface of the wedge-shaped mop.
Through adopting above-mentioned technical scheme, utilize the high strength blotter can play the effect of buffering to prefabricated layer board for prefabricated layer board is placed and can not drag the emergence rigidity collision with the wedge when dragging on.
Preferably, the precast supporting plate comprises embedded steel bars and a concrete pouring plate, the embedded steel bars extend along the length direction of the precast supporting plate, and the concrete pouring plate is integrally formed with the embedded steel bars in a concrete pouring mode.
Through adopting above-mentioned technical scheme, utilize embedded reinforcement can ensure concrete placement board's bulk strength and compressive capacity for the precast support board that is formed by embedded reinforcement and concrete placement board has higher bearing capacity.
Preferably, the overlook of embedded steel bar is the setting of rectangle frame form, the whole upwards setting of buckling of tip of embedded steel bar, when prefabricated layer board was worn to establish by the coupling bar, the coupling bar was worn to establish the embedded steel bar and is enclosed the rectangle frame that closes the formation and the outer wall upside meets with the outer wall of embedded steel bar.
Through adopting above-mentioned technical scheme, through setting the embedded steel bar to the rectangle frame form to make the tip of embedded steel bar upwards buckle the setting, thereby can play the effect of support to the embedded steel bar when making connecting reinforcement and embedded steel bar be connected, make the installation of prefabricated layer board more stable.
Preferably, the prefabricated supporting plate is formed by splicing a plurality of bottom plates and two side plates, two side plates are horizontally arranged on one side in opposite directions and are connected with the side edge of the bottom plate, and two opposite side plates are arranged on one side in an upward inclined mode.
By adopting the technical scheme, the prefabricated support plate is separated into the plurality of bottom plates and the side plates, so that the prefabricated support plate is convenient to produce, transport, store and install.
Preferably, each embedded steel bar is uniformly distributed in each bottom plate and each side plate, reinforcing steel bars are arranged in each bottom plate and each side plate, and each reinforcing steel bar and each embedded steel bar are welded into a whole.
Through adopting above-mentioned technical scheme, utilize the cooperation between reinforcing bar and the embedded steel bar, can further improve the bulk strength of bottom plate and curb plate.
In a second aspect, the present application provides a construction process for a wet joint connection as described above, comprising the steps of:
firstly, hoisting each bottom plate and each side plate into a wet joint, and adjusting the position of each bottom plate and each side plate;
splicing the bottom plates and the side plates, and penetrating connecting steel bars to ensure the connection strength between the prefabricated supporting plate and the connecting end heads;
and step three, pouring concrete to form a pouring part, wherein the pouring of the concrete is carried out for multiple times, and the concrete is compacted by using a vibrator after each pouring is finished.
By adopting the technical scheme, the pre-splicing and pre-installation of the prefabricated support plate can be completed by utilizing the first step, the fixed installation of the prefabricated support plate can be completed by utilizing the second step, and finally the pouring molding of the pouring part is completed by utilizing the third step.
Preferably, when the first step is performed, an actual distance between the two concrete beams is measured, the strong cushion pads with corresponding sizes are selected according to the actual distance between the two concrete beams, and then the strong cushion pads are installed on the two side surfaces of each bottom plate and each side plate, so that the outer surface of the assembled prefabricated supporting plate can be horizontal to the bottom surface and the side surface of the concrete beam.
Through adopting above-mentioned technical scheme, when the actual width of prefabricated layer board and the actual interval between two concrete beam took place the deviation, utilized powerful blotter not only can play the effect of buffering, can play the effect of complementing the deviation simultaneously, ensured that the surface of prefabricated layer board can be with the bottom surface and the side level of concrete beam.
In summary, the present application includes at least one of the following beneficial technical effects:
the prefabricated support plate is used as a template, so that the template is not required to be dismantled after the wet joint connecting structure is formed, and the construction efficiency is greatly improved;
each part of the prefabricated template can be produced in a factory in advance and then is transported to be assembled on site, so that the cost is low;
after the pouring part is poured, the prefabricated supporting plate can play a good supporting role, and the pouring part is prevented from falling off when the pouring part is not completely solidified.
Drawings
Fig. 1 is a front view of a wet joint structure of a precast concrete beam according to an embodiment of the present application;
fig. 2 is a schematic sectional view of a wet joint structure of a precast concrete beam according to an embodiment of the present application;
FIG. 3 is an enlarged view of part A of FIG. 2;
FIG. 4 is a schematic illustration of the installation of a prefabricated pallet according to an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a pre-formed pallet of an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a prefabricated pallet according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a steel reinforcement cage according to an embodiment of the present application.
Reference numerals: 1. a concrete beam; 11. dragging in a wedge shape; 12. supporting the reinforcing steel bars; 13. connecting the end heads; 2. wet seaming; 3. prefabricating a supporting plate; 31. a base plate; 32. a side plate; 33. a steel reinforcement cage; 331. embedding reinforcing steel bars in advance; 332. reinforcing steel bars; 34. pouring concrete into the slab; 4. a pouring part; 5. a high strength cushion pad; 6. and connecting the reinforcing steel bars.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
The embodiment of the application discloses wet joint structure of precast concrete roof beam. Referring to fig. 1 and 2, the wet joint 2 connection structure includes a concrete beam 1, a wet joint 2, a precast pallet 3, and a cast part 4; wherein, concrete beam 1 is provided with two, and wet seam 2 is enclosed by two concrete beam 1 and closes and form, and the both ends of prefabricated layer board 3 are buckled and are set up, and install in the bottom of wet seam 2 and the left and right sides is connected with two concrete beam 1 looks one side in opposite directions respectively, and pouring part 4 is formed in the top of prefabricated layer board 3 by concrete placement.
Referring to fig. 3, all be provided with the wedge that transversal personally submits the triangle-shaped setting on the side that two concrete beam 1 set up in opposite directions and drag 11, two wedges drag 11 and set up in the slope of the side that sets up in opposite directions, and the incline direction sets up upwards, and the wedge drags 11 to extend along the length direction of wet seam 2, and the wedge drags 11 to be located the bottom of wet seam 2, when prefabricated layer board 3 was installed in wet seam 2, the left and right sides of prefabricated layer board 3 overlap joint respectively on two wedges drag 11.
Wherein, all set up on the left and right sides of prefabricated layer board 3 respectively with two wedges drag 11 wedge surface complex inclined planes, all install the high strength blotter 5 that a plurality of arranged along 3 length direction of prefabricated layer board on twice inclined planes, when prefabricated layer board 3 was installed in wet seam 2, the lower surface of each high strength blotter 5 dragged 11 wedge surface laminating with the wedge.
Referring to fig. 4 and 5, a plurality of supporting steel bars 12 arranged along the length direction of the wet joints 2 are embedded in the two concrete beams 1, each supporting steel bar 12 extends out of the concrete beam 1 and extends to a position between the wet joints 2, connecting ends 13 used for increasing the connecting strength of the prefabricated supporting plate 3 and the concrete beam 1 are formed by the parts of the supporting steel bars 12 extending into the wet joints 2, a plurality of connecting steel bars 6 are arranged on the left side and the right side of the prefabricated supporting plate 3, and the connecting ends 13 corresponding to the connecting steel bars 6 on the same side of the prefabricated supporting plate 3 and the connecting ends corresponding to the positions are fixed into a whole in a steel bar binding mode.
Specifically, each connecting end 13 is formally arranged in a shape like the letter Contraband, two ends of each connecting end 13 are connected with the concrete beam 1, when each connecting reinforcement 6 arranged on the same side of the prefabricated supporting plate 3 is connected with the connecting end 13, each connecting reinforcement 6 is uniformly distributed on the upper side and the lower side of the connecting end 13, and each connecting reinforcement 6 is uniformly distributed on the upper side and the lower side of the connecting end 13; wherein the same side of the wet joint 2 is positioned to connect each connecting reinforcement 6 with each connecting end 13 by reinforcement.
Referring to fig. 5 and 6, the prefabricated supporting plate 3 includes a plurality of bottom plates 31 and two side plates 32, each bottom plate 31 is disposed between the two side plates 32, one side of each side plate 32, which is disposed opposite to the other side, is horizontally disposed and connected to a side edge of the bottom plate 31, and one side of each side plate 32, which is disposed opposite to the other side, is bent upward; when the connecting reinforcing steel bars 6 are required to be installed, the connecting reinforcing steel bars 6 only need to penetrate through the bending parts of the two side plates 32.
Referring to fig. 6 and 7, each bottom plate 31 and each side plate 32 respectively include a steel reinforcement framework 33 and a concrete pouring plate 34, the steel reinforcement framework 33 includes a plurality of embedded steel bars 331 which are vertical side by side along the width direction of the prefabricated supporting plate 3, each embedded steel bar 331 is continuously bent for multiple times so as to be arranged in a rectangular frame shape in a top view, and two ends of each embedded steel bar 331 are bent upwards; wherein, set up both ends tip of each embedded steel 331 on bottom plate 31 and all stretch out the bottom plate 31 outside, set up wherein one end of each embedded steel 331 on curb plate 32 is located the position that curb plate 32 buckles, set up the other one end tip position of each embedded steel 331 on curb plate 32 and stretch out outside curb plate 32. When installation connecting reinforcement 6, only need to make connecting reinforcement 6's both ends wear to establish the part that curb plate 32 buckles and set up to make connecting reinforcement 6 wear to establish embedded reinforcement 331 and enclose the rectangle frame that closes the formation and the outer wall upside meets with embedded reinforcement 331's outer wall can.
Wherein, one end tip of embedded steel 331 is higher than other one end tip, and the higher one end of embedded steel 331 level is crossing with the upside of connecting end 13, and the lower one end of embedded steel 331 level is crossing with the downside of connecting end 13. When the connecting bar 6 is connected to the upper side of the connecting end 13, the connecting bar 6 is connected to the end of each embedded bar 331 having a high horizontal position, and when the connecting bar 6 is connected to the lower side of the connecting end 331, the connecting bar 6 is connected to the end of each embedded bar 331 having a low horizontal position.
Referring to fig. 7, the steel bar framework 33 further includes a plurality of reinforcing steel bars 332, each reinforcing steel bar 332 is arranged along the length direction of the wet joint 2, and each reinforcing steel bar 332 is welded with each embedded steel bar 331 as a whole.
The implementation principle of the wet joint structure of precast concrete beam in the embodiment of the application is as follows:
the bottom plates 31 and the side plates 32 are prefabricated in a factory, then transported to the site, the bottom plates 31 and the side plates 32 are hoisted into the wet joints 2 by a crane to be assembled, so that the prefabricated supporting plate 3 is installed, and finally concrete is poured to form the pouring part 4.
The embodiment of the application also discloses a construction process for the wet joint connecting structure, which comprises the following steps:
firstly, hoisting each bottom plate 31 and each side plate 32 into the wet joint 2, and adjusting the positions of each bottom plate 31 and each side plate 32;
splicing the bottom plates and the side plates, and penetrating through connecting steel bars 6 to ensure the connection strength between the prefabricated supporting plate 3 and the connecting end 13;
and step three, pouring concrete to form a pouring part 4, wherein the pouring of the concrete is carried out for multiple times, and the concrete is compacted by using a vibrator after each pouring is finished.
When the first step is performed, firstly, the actual distance between the two concrete beams 1 is measured, the high-strength buffer cushions 5 with corresponding sizes are selected according to the actual distance between the two concrete beams 1, and then the high-strength buffer cushions 5 are installed on the two side surfaces of each bottom plate 31 and the side plates 32, so that the outer surfaces of the prefabricated support plates 3 which are assembled can be horizontal to the bottom surfaces and the side surfaces of the concrete beams 1.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a wet joint structure of precast concrete roof beam, includes concrete beam (1) of two adjacent settings and sets up wet joint (2) between two concrete beam (1), two the one end that concrete beam (1) set up in opposite directions all is provided with connects end (13), its characterized in that still includes:
the left side and the right side of the prefabricated support plate (3) are respectively connected with one side face of each of the two opposite concrete beams (1), and the left end and the right end of the prefabricated support plate (3) are bent upwards;
the connecting steel bars (6) are arranged in the width direction of the wet joint (2), each connecting steel bar (6) extends along the length direction of the prefabricated supporting plate (3), and each connecting steel bar (6) penetrates through the end part of the prefabricated supporting plate (3) and is connected with a connecting end (13);
a pouring part (4), wherein the pouring part (4) is formed by solidifying concrete poured in the wet joint (2);
the prefabricated support plate (3) comprises embedded steel bars (331) and concrete pouring plates (34), the embedded steel bars (331) extend along the length direction of the prefabricated support plate (3), the concrete pouring plates (34) are integrally formed with the embedded steel bars (331) in a concrete pouring mode, the embedded steel bars (331) are arranged in a rectangular frame shape in a overlook mode, the end portions of the embedded steel bars (331) are integrally and upwards bent, when the connecting steel bars (6) penetrate through the prefabricated support plate (3), the connecting steel bars (6) penetrate through the rectangular frame formed by enclosing of the embedded steel bars (331), the upper sides of the outer walls of the rectangular frame are connected with the outer walls of the embedded steel bars (331), the prefabricated support plate (3) is formed by splicing a plurality of bottom plates (31) and two side plates (32), one side of each side plate (32) which is arranged oppositely is horizontally and is connected with the side edge of the bottom plate (31), the opposite sides of the two side plates (32) are both arranged in an upward inclined way.
2. A precast concrete beam wet joint structure according to claim 1, wherein: the connecting end heads (13) are formed by continuously bending reinforcing steel bars twice, the parts of the connecting end heads (13) extending out of the concrete beam (1) are arranged in a shape like the Chinese character 'Contraband', and two ends of each connecting end head (13) are fixed with the concrete beam (1).
3. A precast concrete beam wet joint structure according to claim 1, wherein: two homogeneous body shaping has the wedge to drag (11) on the side that concrete beam (1) set up in opposite directions, the wedge drags (11) to set up in the downside of concrete beam (1), all be provided with on the left and right sides of prefabricated layer board (3) with the wedge drag (11) upper surface complex inclined plane.
4. A precast concrete beam wet joint structure according to claim 3, wherein: still include a plurality of high strength blotter (5), each high strength blotter (5) equipartition is on each inclined plane, when prefabricated layer board (3) are installed in wet seam (2), each the lower surface and the wedge of high strength blotter (5) drag the wedge face laminating of (11).
5. A precast concrete beam wet joint structure according to claim 1, wherein: the embedded steel bars (331) are uniformly distributed in the bottom plates (31) and the side plates (32), reinforcing steel bars (332) are arranged in the bottom plates (31) and the side plates (32), and the reinforcing steel bars (332) are welded with the embedded steel bars (331) into a whole.
6. A process for constructing a wet joint connection according to any one of claims 1 to 5, comprising the steps of:
firstly, hoisting each bottom plate (31) and each side plate (32) into a wet joint (2), and adjusting the positions of each bottom plate (31) and each side plate (32);
splicing the bottom plates (31) and the side plates (32), and penetrating through connecting steel bars (6) to ensure the connection strength between the prefabricated supporting plate (3) and the connecting end heads (13);
and step three, pouring concrete to form a pouring part (4), wherein the pouring of the concrete is carried out for multiple times, and the concrete is compacted by using a vibrator after each pouring is finished.
7. The process of constructing a wet joint connection structure according to claim 6, wherein: when the first step is carried out, the actual distance between the two concrete beams (1) is measured, the high-strength cushion pads (5) with corresponding sizes are selected according to the actual distance between the two concrete beams (1), and then the high-strength cushion pads (5) are installed on the two side faces of each bottom plate (31) and each side plate (32), so that the outer surface of the prefabricated support plate (3) after being assembled can be horizontal to the bottom face and the side face of the concrete beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234502.2A CN112376400B (en) | 2020-11-07 | 2020-11-07 | Wet joint structure of precast concrete beam and construction process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011234502.2A CN112376400B (en) | 2020-11-07 | 2020-11-07 | Wet joint structure of precast concrete beam and construction process thereof |
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| CN112376400A CN112376400A (en) | 2021-02-19 |
| CN112376400B true CN112376400B (en) | 2022-02-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113136783A (en) * | 2021-03-18 | 2021-07-20 | 长江武汉航道工程局 | Prefabricated T-shaped beam and construction method thereof |
| CN112921821B (en) * | 2021-03-25 | 2022-08-16 | 成都城投建筑工程有限公司 | Capping beam subsection prefabrication and assembly wet joint construction structure and construction method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0827733A (en) * | 1994-07-20 | 1996-01-30 | Ishikawajima Constr Materials Co Ltd | Precast floor panel jointing structure |
| CN202359509U (en) * | 2012-02-22 | 2012-08-01 | 中铁七局集团武汉工程有限公司 | Bridge wet joint operation vehicle |
| CN202658532U (en) * | 2012-07-13 | 2013-01-09 | 中铁二十四局集团安徽工程有限公司 | Bridge wet joint construction template |
| CN103510466B (en) * | 2013-10-11 | 2015-07-01 | 中铁十九局集团有限公司 | Wet joint construction method for T-shaped beam bridge deck system |
| CN203700971U (en) * | 2014-02-10 | 2014-07-09 | 苏玉明 | Bridge wet joint construction formwork |
| CN108442596B (en) * | 2018-04-20 | 2024-04-16 | 中交第二公路勘察设计研究院有限公司 | Wet joint steel bar connection structure of precast concrete beam |
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