CN112627033A - Diaphragm plate pouring template and method for precast beam on curved bridge - Google Patents
Diaphragm plate pouring template and method for precast beam on curved bridge Download PDFInfo
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- CN112627033A CN112627033A CN202011406776.5A CN202011406776A CN112627033A CN 112627033 A CN112627033 A CN 112627033A CN 202011406776 A CN202011406776 A CN 202011406776A CN 112627033 A CN112627033 A CN 112627033A
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- precast beam
- screw rod
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention provides a diaphragm plate pouring template and a diaphragm plate pouring method for a precast beam on a curved bridge, which comprises a plurality of strands of reinforcing steel bars pre-embedded at two sides of the precast beam, wherein the strands of reinforcing steel bars between two parallel precast beams are fixedly connected through a reinforcing steel bar framework, two sides of the reinforcing steel bar framework are provided with side templates, the bottom of the reinforcing steel bar framework is provided with a bottom template, two ends of the bottom template abut against the precast beams, the bottoms of the side templates abut against the bottom template for sealing, two sides of the side templates abut against the precast beams for sealing, the side templates, the bottom template and the precast beams form a cavity, and the diaphragm plate connecting the two precast beams is formed. This kind of mode of pouring can not produce the broken line between prefabricated cross slab and the cast-in-place diaphragm of building, and the dislocation of diaphragm department reinforcing bar is also fine correction, can solve the problem of precast beam cross slab deviation completely, and easy operation is convenient and reliable, is fit for using widely.
Description
Technical Field
The invention relates to the field of diaphragm plate pouring, in particular to a diaphragm plate pouring template and a diaphragm plate pouring method for a precast beam on a curved bridge.
Background
When the precast beam is constructed, the length of the precast beam on the curved bridge, particularly on the curved bridge with a small radius as shown in figure 1, is changed due to the difference between the inside and the outside, so that the broken line of the cast-in-place part of the diaphragm plate is caused, and the appearance of concrete and the integral stress of the diaphragm plate are damaged. When prefabricating the case roof beam, can pour with the roof beam body together usually like prefabricated cross slab in fig. 2, cast in situ the cross slab when the precast beam docks like fig. 3 to can produce between prefabricated cross slab and the cast in situ and pour the broken line, not only can influence the whole pleasing to the eye of bridge, handle also very time-consuming and laborious moreover. The use function of the bridge is even affected by serious malposition. The main reasons for the dislocation of the diaphragm plates are as follows: 1) the external dimension of the precast beam template or the angle in the direction of the diaphragm beam has deviation; 2) the diaphragm beam template has deviation during installation; 3) the precast beam hoisting position has deviation.
The national patent CN111730738A 'a precast box girder diaphragm connecting structure and a construction method thereof' relates to the arrangement and connection of precast box girder diaphragm reinforcing steel bars, does not relate to a concrete pouring mold and a pouring method of a diaphragm, has problems in implementation, and cannot effectively solve the problem of deviation when the precast girder diaphragm is butted.
Disclosure of Invention
The invention mainly aims to provide a diaphragm plate pouring template and a diaphragm plate pouring method for a precast beam on a curved bridge, and solves the problems that a pouring fold line is generated between a precast diaphragm plate and a cast-in-place diaphragm plate, the integral attractiveness of the bridge is influenced, the treatment is time-consuming and labor-consuming, the dislocation condition is serious, and even the service function of the bridge is influenced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the steel bar reinforced concrete precast beam comprises a plurality of strands of steel bars which are embedded at two sides of the precast beam, the strands of steel bars between two parallel precast beams are fixedly connected through a steel bar framework, side templates are arranged at two sides of the steel bar framework, a bottom template is arranged at the bottom of the steel bar framework, two ends of the bottom template are abutted against the precast beam, the bottom of each side template is abutted against the bottom template to be sealed, two sides of each side template are abutted against the precast beam to be sealed, the side templates, the bottom template and the precast beam form a cavity, and a transverse partition plate for connecting the two.
In the preferred scheme, a boss is arranged on the fixed frame in the bottom template, grooves are formed in two sides of the boss, and the end parts of the side templates abut against the grooves.
In the preferred scheme, lug plates are arranged on two sides of the fixing frame, a plurality of through holes are formed in the lug plates, a first screw rod is arranged in each through hole, one end of each first screw rod abuts against each lug plate, and the other end of each first screw rod abuts against a fixed seat at the top of the precast beam through a nut;
and adjusting the nut on the first screw rod to ensure that the bottom formwork abuts against and is fixed at the bottom of the precast beam.
In the preferred scheme, the recess is the inclined groove to the messenger leans on the side form board slope in the recess, and inclination is 1~ 5.
In the preferred scheme, a plurality of second screw rods are arranged between the two side formworks, the second screw rods penetrate through the two side formworks, and two ends of each second screw rod are connected and fixed on the two side formworks through nuts.
In the preferred scheme, a sleeve is arranged on the second screw rod, the sleeve is sleeved on the second screw rod, and two ends of the sleeve are abutted against the side template.
In the preferred scheme, the side form outside is equipped with the steel structure skeleton, and the second lead screw is fixed on the steel structure skeleton.
In the preferred scheme, bottom forms one side is equipped with the steel structure skeleton, and first lead screw is fixed on the steel structure skeleton.
The method comprises the following steps: s1, fixedly connecting a plurality of strands of steel bars between two parallel precast beams through a steel bar framework, and chiseling the steel bars on the precast beams;
s2, assembling the side templates on the bottom template for pre-fixing by taking the center of the bottom of the diaphragm plate of the precast beam as a position;
s3, hoisting the pre-fixed bottom template and the pre-fixed side templates upwards to enable the bottom template to abut against the bottom of the precast beam and the side templates to abut against the side faces of the precast beam, and wrapping the steel reinforcement framework in the templates;
s4, mounting a sleeve and a second lead screw between the side templates and locking and fixing the sleeve and the second lead screw by nuts;
s5, adjusting the position of the template to be positioned at the center of the transverse partition plate of the steel reinforcement framework, abutting against the bottom template through a first screw rod, and abutting against the top of the precast beam through a fixed seat at the end part of the first screw rod;
s6, adjusting a nut on the first lead screw to enable the first lead screw to drive the bottom template to be more attached to the bottom of the precast beam for fixing;
s7, adopting wood molds to attach and seal the joints of the bottom template, the side templates and the precast beam, and sealing by using an expanding agent;
and S8, pouring concrete into the cavity formed by the bottom template, the side templates and the precast beam, and removing the templates and the screw rods after the concrete is solidified, thereby completing the pouring of the diaphragm plate connected between the precast beams.
The invention provides a diaphragm plate pouring template and a pouring method of a precast beam on a curved bridge, wherein steel bars are pre-embedded at the diaphragm plate position when the precast beam is poured, when the precast beam is butted, the steel bars at the diaphragm plate position are connected together and reinforced by a steel bar framework, then the template is installed at the steel bar framework and fixed by a screw rod, an expanding agent is injected to seal the template on the precast beam, concrete can be poured in the template, the template and the screw rod are removed after the concrete is solidified, and the diaphragm plate butted with the precast beam is poured.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a top view of a prior art curved bridge structure;
FIG. 2 is a schematic view illustrating the installation of a prefabricated diaphragm of a conventional precast beam;
FIG. 3 is a schematic view of a cast broken line formed by a conventional prefabricated diaphragm and a cast-in-place diaphragm;
FIG. 4 is a view of the overall structure of the present invention;
FIG. 5 is an exploded view of the overall structure of the present invention;
FIG. 6 is an elevational view of the overall construction of the present invention;
FIG. 7 is a cross-sectional view of the invention A-A;
FIG. 8 is a side view of the bottom die plate shaft of the present invention;
FIG. 9 is a front view of the bottom form of the present invention;
in the figure: prefabricating a beam 1; prefabricating a diaphragm plate 2; reinforcing steel bars 3; pouring the diaphragm plate 4 in situ; pouring a broken line 5; a bottom template 6; a fixed mount 601; an ear plate 602; a boss 603; a recess 604; a sideform 7; a first lead screw 8; a second lead screw 9; a fixed seat 10; a sleeve 11; a steel reinforcement cage 12.
Detailed Description
Example 1
As shown in figures 1-9, a diaphragm plate pouring template of a precast beam on a curved bridge and a pouring method thereof comprise a plurality of strands of reinforcing steel bars 3 pre-embedded at two sides of a precast beam 1, the strands of reinforcing steel bars 3 between two parallel precast beams 1 are fixedly connected through a reinforcing steel bar framework 12, two sides of the reinforcing steel bar framework 12 are provided with side templates 7, the bottom of the reinforcing steel bar framework 12 is provided with a bottom template 6, two ends of the bottom template 6 are abutted against the precast beam 1, the bottoms of the side templates 7 are abutted against the bottom template 6 for sealing, two sides of the side templates 7 are abutted against the precast beam 1 for sealing, the side templates 7, the bottom template 6 and the precast beam 1 form a cavity, a diaphragm plate connecting the two precast beams 1 is formed by pouring the cavity, therefore, the reinforcing steel bars 3 at the position of the diaphragm plate are pre-embedded when the precast beam 1 is poured, one-time diaphragm plate pouring is carried out when the precast beam 1 is butted, a pouring broken, simultaneously can carry out the horizontal diaphragm position of butt joint through correcting reinforcing bar 3 when precast beam 1 deviation is great for follow-up horizontal diaphragm pours more parallel and level, can not go out the deviation.
In the preferred scheme, a boss 603 is arranged on a fixed frame 601 in the bottom template 6, grooves 604 are arranged on two sides of the boss 603, and the end part of the side template 7 abuts against the grooves 604, so that the side template 7 is inserted into the grooves 604 in the bottom template 6, the side template 7 and the bottom template 6 are fixed, and the size of the pouring transverse partition plate can be limited.
In a preferable scheme, two sides of a fixing frame 601 are provided with lug plates 602, the lug plates 602 are provided with a plurality of through holes, a first screw rod 8 is arranged in each through hole, one end of each first screw rod 8 abuts against the lug plates 602, and the other end of each first screw rod 8 abuts against the inside of a fixing seat 10 at the top of a precast beam 1 through a nut;
adjust the nut on the first lead screw 8 to make the die block board 6 support and lean on the bottom of fixing at precast beam 1, from this structure, die block board 6 supports and leans on in the bottom of precast beam 1, and fix at precast beam 1 top through first lead screw 8, adjust the nut on the first lead screw 8 and lock, make the further laminating precast beam 1 of die block board 6, it is fixed more firm.
In the preferred scheme, recess 604 is the inclined groove to the messenger leans on the side form 7 slope in the recess 604, and inclination is 1~5, and from this structure, side form 7 inserts in recess 604 to one side, forms certain angle and is the draft angle, and the side form 7 of being convenient for dismantle after pouring is accomplished, also can strengthen the diaphragm plate intensity of pouring.
In the preferred scheme, be equipped with a plurality of second lead screws 9 between two side form boards 7, second lead screw 9 passes two side form boards 7, and second lead screw 9 both ends are connected through the nut and are fixed on two side form boards 7, from this structure, fix the aperture through second lead screw 9 between two side form boards 7 to it is more firm reliable when can guaranteeing concreting.
In the preferred scheme, the sleeve 11 is arranged on the second screw rod 9, the sleeve 11 is sleeved on the second screw rod 9, and two ends of the sleeve 11 are abutted against the side templates 7, so that the sleeve 11 can expand the two side templates 7 at the inner side to limit the side templates 7 to contract inwards, and the nut at the outer side of the second screw rod 9 can limit the side templates 7 to contract outwards.
In the preferred scheme, the side form 7 outside is equipped with the steel structure skeleton, and second lead screw 9 is fixed on the steel structure skeleton, and from this structure, the steel structure skeleton has increased side form 7's intensity, guarantees going on smoothly of pouring.
In the preferred scheme, 6 one sides of die block board are equipped with the steel structure skeleton, and first lead screw 8 is fixed on the steel structure skeleton, and from this structure, the steel structure skeleton has increased die block board 6's intensity, guarantees going on smoothly of pouring.
Example 2
Further explaining with reference to embodiment 1, as shown in fig. 1 to 9, a plurality of strands of steel bars 3 between two parallel precast beams 1 are fixedly connected through a steel bar framework 12, and the steel bars 3 on the precast beams 1 are roughened; assembling the side templates 7 on the bottom template 6 for pre-fixing by taking the center of the bottom of the diaphragm plate of the precast beam 1 as a position; hoisting a pre-fixed bottom template 6 and a pre-fixed side template 7 upwards to enable the bottom template 6 to abut against the bottom of the precast beam 1, enabling the side template 7 to abut against the side face of the precast beam 1, and wrapping the steel reinforcement framework 12 in the templates; a sleeve 11 and a second screw rod 9 are arranged between the side templates 7 and are fixed by locking nuts; the position of the adjusted template is located at the center of a transverse partition plate of a steel reinforcement framework 12, then the template is abutted against a bottom template 6 through a first screw rod 8, and the end part of the first screw rod 8 is abutted against the top of the precast beam 1 through a fixed seat 10; adjusting a nut on the first screw rod 8 to enable the first screw rod 8 to drive the bottom template 6 to be more attached to the bottom of the precast beam 1 for fixing; joints of the bottom template 6 and the side templates 7 with the precast beam 1 are jointed and sealed by adopting wood moulds, and are sealed by injecting an expanding agent; and (3) pouring concrete into a cavity formed by the bottom template 6, the side templates 7 and the precast beam 1, and removing the templates and the screw rods after the concrete is solidified, thereby completing the pouring of the diaphragm plate connected among the precast beams 1.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a template is pour to diaphragm of precast beam on curved bridge, characterized by: the prefabricated beam comprises a plurality of strands of steel bars (3) which are embedded at two sides of a prefabricated beam (1), the strands of steel bars (3) between two parallel prefabricated beams (1) are fixedly connected through a steel bar framework (12), side templates (7) are arranged at two sides of the steel bar framework (12), a bottom template (6) is arranged at the bottom of the steel bar framework (12), two ends of the bottom template (6) are abutted against the prefabricated beam (1), the bottoms of the side templates (7) are abutted against the bottom template (6) to be sealed, two sides of the side templates (7) are abutted against the prefabricated beam (1) to be sealed, the side templates (7), the bottom template (6) and the prefabricated beam (1) form a cavity, and a transverse partition board for connecting the two prefabricated beams (1) is formed by.
2. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: a boss (603) is arranged on a fixed frame (601) in the bottom template (6), grooves (604) are arranged on two sides of the boss (603), and the end parts of the side templates (7) are abutted against the grooves (604).
3. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: ear plates (602) are arranged on two sides of the fixing frame (601), a plurality of through holes are formed in the ear plates (602), a first screw rod (8) is arranged in each through hole, one end of each first screw rod (8) abuts against the ear plate (602), and the other end of each first screw rod abuts against the inside of a fixing seat (10) at the top of the precast beam (1) through a nut;
and adjusting the nut on the first screw rod (8) to ensure that the bottom template (6) is abutted and fixed at the bottom of the precast beam (1).
4. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: the groove (604) is an inclined groove, so that the side die plate (7) abutted against the groove (604) is inclined, and the inclination angle is 1-5 degrees.
5. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: a plurality of second screw rods (9) are arranged between the two side formworks (7), the second screw rods (9) penetrate through the two side formworks (7), and two ends of each second screw rod (9) are connected and fixed on the two side formworks (7) through nuts.
6. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: a sleeve (11) is arranged on the second screw rod (9), the sleeve (11) is sleeved on the second screw rod (9), and two ends of the sleeve (11) are abutted against the side die plate (7).
7. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: the outer side of the side template (7) is provided with a steel framework, and the second screw rod (9) is fixed on the steel framework.
8. The diaphragm plate pouring template of the precast beam on the curved bridge, which is characterized in that: one side of the bottom template (6) is provided with a steel framework, and the first screw rod (8) is fixed on the steel framework.
9. The method for pouring the diaphragm plate pouring template of the precast beam on the curved bridge according to any one of claims 1 to 8, which comprises the following steps: s1, fixedly connecting a plurality of strands of steel bars (3) between two parallel precast beams (1) through a steel bar framework (12), and roughening the steel bars (3) on the precast beams (1);
s2, assembling the side templates (7) on the bottom template (6) for pre-fixing in the center of the bottom of the diaphragm plate of the precast beam (1);
s3, hoisting the pre-fixed bottom template (6) and the side templates (7) upwards to enable the bottom template (6) to abut against the bottom of the precast beam (1), enabling the side templates (7) to abut against the side faces of the precast beam (1), and wrapping the steel reinforcement framework (12) in the templates;
s4, installing a sleeve (11) and a second screw rod (9) between the side templates (7) and locking and fixing the sleeve and the second screw rod by nuts;
s5, adjusting the position of the template to be positioned at the center of a transverse partition plate of the steel reinforcement framework (12), abutting against the bottom template (6) through a first screw rod (8), and abutting against the top of the precast beam (1) through a fixed seat (10) at the end part of the first screw rod (8);
s6, adjusting a nut on the first screw rod (8) to enable the first screw rod (8) to drive the bottom template (6) to be more attached to the bottom of the precast beam (1) for fixing;
s7, adopting wood molds to attach and seal the joints of the bottom template (6), the side templates (7) and the precast beam (1), and sealing by using an expanding agent;
s8, pouring concrete into a cavity formed by the bottom formwork (6), the side formworks (7) and the precast beam (1), and removing the formworks and the screw rods after the concrete is solidified, so that the pouring of the diaphragm plate connected between the precast beams (1) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406776.5A CN112627033A (en) | 2020-12-04 | 2020-12-04 | Diaphragm plate pouring template and method for precast beam on curved bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406776.5A CN112627033A (en) | 2020-12-04 | 2020-12-04 | Diaphragm plate pouring template and method for precast beam on curved bridge |
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| CN112627033A true CN112627033A (en) | 2021-04-09 |
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| CN202011406776.5A Pending CN112627033A (en) | 2020-12-04 | 2020-12-04 | Diaphragm plate pouring template and method for precast beam on curved bridge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714491A (en) * | 2022-04-14 | 2022-07-08 | 中交第四公路工程局有限公司 | Heat storage and preservation device for bridge diaphragm concrete and use method |
| CN114737485A (en) * | 2022-05-13 | 2022-07-12 | 福建第一公路工程集团有限公司 | Construction method for preventing transverse partition plate from being dislocated by prefabricated box girder |
| CN116394381A (en) * | 2023-04-06 | 2023-07-07 | 连云港先至远大建筑工业有限公司 | Diaphragm plate adjustable template device of PC precast beam and construction method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714491A (en) * | 2022-04-14 | 2022-07-08 | 中交第四公路工程局有限公司 | Heat storage and preservation device for bridge diaphragm concrete and use method |
| CN114737485A (en) * | 2022-05-13 | 2022-07-12 | 福建第一公路工程集团有限公司 | Construction method for preventing transverse partition plate from being dislocated by prefabricated box girder |
| CN114737485B (en) * | 2022-05-13 | 2023-06-23 | 福建第一公路工程集团有限公司 | Construction method for preventing dislocation of diaphragm plate of prefabricated box girder |
| CN116394381A (en) * | 2023-04-06 | 2023-07-07 | 连云港先至远大建筑工业有限公司 | Diaphragm plate adjustable template device of PC precast beam and construction method thereof |
| CN116394381B (en) * | 2023-04-06 | 2023-09-01 | 连云港先至远大建筑工业有限公司 | Diaphragm plate adjustable template device of PC precast beam and construction method thereof |
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