CN113502750A - Construction process of pouring-preventing bubbles for pouring highway engineering bridge - Google Patents
Construction process of pouring-preventing bubbles for pouring highway engineering bridge Download PDFInfo
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- CN113502750A CN113502750A CN202110845493.9A CN202110845493A CN113502750A CN 113502750 A CN113502750 A CN 113502750A CN 202110845493 A CN202110845493 A CN 202110845493A CN 113502750 A CN113502750 A CN 113502750A
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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
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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
- E01D21/10—Cantilevered erection
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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Abstract
The invention discloses a construction process of pouring-preventing bubbles for pouring a highway engineering bridge, which comprises the following steps of: s1: assembling hanging basket templates; s2: pouring a beam body; s3: curing the concrete; s4: prestressed tensioning and grouting operation of the beam body; s5: the hanging basket moves forwards, the mounted hanging basket moves forwards, and the project of the next bridge section is continuously completed; the pouring anti-bubble device is more stable to place, can rotate in the direction as required, and is more convenient to use; concrete pump truck will mix earth and transport the temperature that needs the test concrete behind the building site, and the suitability, preparation concrete brick detects the intensity of concrete, ensures the concrete quality, and S204 vibrates the concrete and uses the pouring air pocket prevention device to carry out the layering vibration to the concrete layer that waters, vibrates 20 to 30 seconds at every point, can make the bubble in the concrete disappear completely, prevents the concrete bubble, and the condition such as cracked takes place, improves engineering quality.
Description
Technical Field
The invention relates to the technical field of highway engineering bridge pouring, in particular to a construction process of pouring-prevention bubbles for highway engineering bridge pouring.
Background
The bridge is a very important component in the transportation of China, and with the development of economy, the construction speed of bridge engineering of China is driven, so that the improvement of bridge construction technology of China is promoted to a certain extent. Pouring is crucial one step in present bridge construction, and the quality of pouring also plays decisive effect to the quality of whole engineering, when carrying out concrete placement, appears pouring bubble easily, and the pouring bubble can reduce concrete structure's intensity, reduces concrete structure's corrosion resisting property, seriously influences the quality of engineering, has huge potential safety hazard.
Disclosure of Invention
The invention aims to provide a construction process for preventing casting bubbles for casting a highway engineering bridge, which has the functions of completely eliminating the bubbles in concrete, preventing the concrete from generating bubbles, cracking and the like, and improving the engineering quality so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction process of pouring bubble prevention for pouring of highway engineering bridges comprises a pouring bubble prevention device, wherein the device comprises a pure copper motor, a connecting pipe and a vibrating pipe, the top end of the pure copper motor is fixedly connected with the connecting pipe, and the vibrating pipe is fixedly arranged at one end, far away from the pure copper motor, of the connecting pipe; the method comprises the following steps:
s1: assembling hanging basket templates: assembling the hanging basket templates at one end of the finished bridge column one by one according to the steps;
s2: pouring a beam body: the beam body pouring comprises the following steps:
s201, binding reinforcing steel bars at the positions of a bottom plate and a web plate of the mounting beam body, mounting a prestressed pipeline, and then mounting an inner guide beam of the inner guide beam to be fixed on a top plate through a suspender;
s202, installing an inner side die and a top die, adjusting the elevation to a correct position, then binding steel bars on part of a top plate of the beam body and installing a prestressed pipeline, and then accurately placing an embedded part and arranging a reserved hole;
s203: pouring concrete: mixing concrete strictly according to the proportion, conveying the mixed concrete to a construction site by using a concrete pump truck, conveying the mixed concrete to the assembled hanging basket template by using the concrete pump truck and a conveying pipeline for layered pouring, pouring each layer by about 30 cm, and pulling a slope;
s204: vibrating the concrete: the poured concrete layer is vibrated in a layered mode by using a pouring anti-bubble device, the vibrating pipes are arranged to be inserted into the concrete in a row mode to a depth of more than 5 cm and are tightly combined with the concrete to start vibrating, each point vibrates for 20 to 30 seconds until the concrete does not obviously sink any more, bubbles do not appear any more, and the surface of the concrete layer is subject to mortar overflowing;
s3: curing the concrete: hanging a spray pipe of an automatic spraying system and carrying out water spraying maintenance on the concrete by using the poured concrete side wall, wherein the concrete is maintained for 1-8 time periods every day, and the maintenance time and interval can be adjusted according to actual conditions;
s4: beam prestress tension and grouting operation: performing beam prestress tensioning and grouting operation after the concrete meets the requirements of design strength, elastic modulus and age;
s5: the hanging basket moves forwards, the mounted hanging basket moves forwards, and the project of the next bridge section is continuously completed, and the method comprises the following steps:
s501, disassembling the inner and outer mold opposite pull rods, and folding or disassembling the inner mold side plate;
s502, slowly loosening the weighing suspenders on the upper front cross beam of the hanging basket to loosen the suspenders with the same section synchronously, stopping when the bottom die panel is about 100 mm away from the concrete surface, and removing the anchor rods of the rear cross beam of the bottom basket on the beam body in the same way to ensure that the bottom die is completely separated from the beam body;
s503, releasing the anchoring of the hanging basket walking track, dragging forwards the hanging basket walking track to a specified position, then re-anchoring the track, and simultaneously, positioning the front sliding seat on the hanging basket walking track;
s504, adjusting and removing the anchor rods on all rear anchor carrying pole beams by adopting a screw jack, wherein the cradle can freely tilt forwards at the moment, so that the rear hook wheel is safely and reversely buckled on the cradle walking track;
s505, a jack is used for drawing the main truss of the cradle to move so as to drive the guide system and the bottom basket system to integrally move forwards, and the rear anchor rod is anchored again after the cradle moves forwards;
s506, reinstalling the bottom basket of the hanging basket, and then anchoring the hanging strip by the lower cross beam
And S507, repeating the first step to assemble the hanging basket template.
Further, the assembling of the hanging basket template of S1 comprises the following steps:
s101, taking the central line of a beam body as a reference, installing a base at the central line position of a lofting walkway according to the lofting position, placing a walkway beam on the base, pre-sleeving a rear hook wheel set on the walkway after the walkway beam is placed, and fixing a walkway anchor on the beam body by utilizing vertical prestress finish rolling deformed steel bars of the beam body after the walkway beam is placed;
s102, assembling a diamond frame and a parallel connection on a ground site, hoisting after the diamond frame and the parallel connection are installed, and temporarily fixing by using a chain block after the hoisting is finished;
s103, placing rear anchor carrying pole beams on each rear anchor point, inserting rear anchor rods in holes at two ends of each carrying pole beam, respectively fixing the lower ends of the rear anchor rods on 0# section beam bodies, jacking the carrying pole beams by using screw jacks, loosening the jacks after locking nuts until the hanging rollers leave the surface of the lower flange of the track and are in a non-bearing state, and anchoring the bearing frame stably;
s104, mounting a hanging basket portal frame parallel connection;
s105, mounting a front upper beam of the hanging basket;
s106, installing a bottom basket system, and paving a panel after the bottom rail is installed;
s107, installing an outer die and an outer guide beam;
s108, adjusting the positions and elevations of the hanging basket and the template system through the screw jack and the chain block, and measuring and recording;
and S109, automatically loading, prepressing and prepressing the template and the hanging basket according to 1.2 times of the weight of the beam body, measuring and recording the elevation when the asymmetric load on the two sides is not more than 8t, unloading after the system is stabilized, and measuring and recording the elevation after unloading.
Further, the fixed adapter that is equipped with in pure copper motor below, the adapter internal fixation is equipped with the pivot, and the pivot extends the adapter to rotate with the stationary ring and is connected, the stationary ring below is fixed to be equipped with motor base.
Further, the fixed control box that is equipped with in one side that the adapter was kept away from to pure copper motor, the control box top is equipped with the master switch, and one side that the control box is close to the connecting pipe is equipped with the handle, and the handle inner wall is equipped with anti-skidding cushion.
Further, the concrete pipe in S203 needs to be fixed on a concrete wall or a column head by using a bracket and an explosion screw, so as to ensure that the connection and the stable installation are proper, and the bracket needs to be supported by a protective layer.
Further, the concrete pump truck in S203 transports the concrete to a construction site, and then the temperature and the suitability of the concrete need to be tested, and concrete bricks are made to detect the strength of the concrete.
Further, in S204, when the vibrated concrete is inserted, the vibrated concrete is quickly inserted, the distance between the front and the back of the vibration insertion is 30-50 cm, the template, the reinforcing steel bars and the embedded parts cannot be touched during vibration, when the vibrating concrete is vibrated near the template, the template is tapped by using a wooden hammer, the reinforcing steel bars are densely arranged and the edges of the template are tamped by using iron rods in a matching manner, and the vibrated concrete is slowly pulled out after being tamped.
Furthermore, channel steel is adopted to weld and fix adjacent gantry horizontal joints in the S104 installation cradle gantry horizontal joint.
Further, S105, a front upper cross beam of the hanging basket is installed, the front upper cross beam of the hanging basket is hoisted to a front node of a main truss of the hanging basket, and is firmly connected with the front node through a high-strength bolt, then the front upper cross beam and the front node are welded together through broken welding, and then hanging belts are installed at corresponding hanging point positions of the front upper cross beam.
Further, before the outer die and the outer guide beam are installed in S107, the outer guide beam is hung on the ground to a corresponding position inside the outer die frame, then the guide beam and the outer die are connected into a whole by bolts, a sliding frame is installed at a reserved hole of the wing plate, the outer die and the outer guide beam are hung together, the front end of the guide beam is hung on the front upper cross beam of the hanging basket through a hanging rod, and the rear end of the guide beam penetrates through the sliding frame and is hung on the wing plate of the beam body through the sliding frame.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a construction process of pouring anti-bubble for pouring a highway engineering bridge, which relates to a pouring anti-bubble device.A rotating joint is fixedly arranged below a pure copper motor, a rotating shaft is fixedly arranged in the rotating joint, the rotating shaft extends out of the rotating joint to be rotatably connected with a reinforcing ring, and a motor base is fixedly arranged below the reinforcing ring; the storage is more stable, the direction can be rotated as required, and the use is more convenient.
2. According to the construction process of the pouring-preventing air bubbles for pouring the highway engineering bridge, the concrete is mixed according to the proportion strictly before the pouring of the S2 beam body, a concrete pump truck is adopted to transport the concrete to a construction site, the concrete mixed according to the proportion is transported to the assembled cradle template by using the concrete pump truck and a transport pipeline to carry out layered pouring, each layer is poured by about 30 cm, and a slope is pulled; the concrete pipeline in S203 needs to be fixed on a concrete wall or a column head through a support and an explosion screw, so that proper connection and stable installation are ensured, the support needs to be supported by a protective layer, the concrete pump truck transports concrete to a construction site, the temperature and the suitability of the concrete need to be tested, the concrete brick is manufactured to detect the strength of the concrete, and the concrete brick has the effects of ensuring the quality of the concrete and the construction safety.
3. The invention relates to a construction process of pouring anti-bubble for highway engineering bridge pouring, which comprises the steps of S204 vibrating concrete, using a pouring anti-bubble device to carry out layered vibration on a poured concrete layer, arranging vibrating pipes to be inserted into the concrete in a row mode to a depth of more than 5 cm and tightly combine with the concrete to start vibration, wherein each point of vibration lasts 20 to 30 seconds, the vibrating pipes cannot touch a template, a reinforcing steel bar and an embedded part, simultaneously using a wood hammer to tap the template when vibrating near the template, matching with iron borer tamping at the intensive reinforcing steel bar position and the edge of the template, and slowly pulling out after the vibration is finished, so that the bubble in the concrete can completely disappear, and the construction process has the effects of preventing the concrete bubble, cracking and the like and improving the engineering quality.
Drawings
FIG. 1 is a schematic view of the whole structure of a vibrating spear used in the construction process of the pouring-preventing bubble for pouring the highway engineering bridge;
FIG. 2 is a schematic structural view of a vibrating bar base used in the construction process of the pouring prevention bubble for highway engineering bridge pouring of the invention;
FIG. 3 is a schematic structural view of a vibrating bar handle used in the construction process of the pouring prevention bubble for highway engineering bridge pouring.
In the figure: 1. a pure copper motor; 2. a control box; 3. a master switch; 4. a handle; 5. a connecting pipe; 6. vibrating the tube; 7. a motor base; 8. an adapter; 9. reinforcing rings; 10. a rotating shaft; 11. an antiskid rubber pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a highway engineering bridge pouring is with construction technology of preventing pouring bubble, still concretely relates to pouring prevents bubble device, including pure copper motor 1, connecting pipe 5 and vibrating tube 6, 1 top and the connecting pipe 5 fixed connection of pure copper motor, the fixed vibrating tube 6 that is equipped with of one end that pure copper motor 1 was kept away from to connecting pipe 5, the fixed adapter 8 that is equipped with in 1 below of pure copper motor, adapter 8 internal fixation is equipped with pivot 10, pivot 10 extends adapter 8 and reinforcing ring 9 and rotates and be connected, reinforcing ring 9 below is fixed and is equipped with motor base 7. A control box 2 is fixedly arranged on one side of the pure copper motor 1, which is far away from the adapter 8, a main switch 3 is arranged at the top of the control box 2, a handle 4 is arranged on one side of the control box 2, which is close to the connecting pipe 5, and an anti-skid rubber mat 11 is arranged on the inner wall of the handle 4; the construction comprises the following steps:
s1: assembling hanging basket templates: the method is characterized in that the hanging basket templates are spliced at one end of the finished bridge column one by one according to the steps and comprises the following steps:
s101, taking the central line of a beam body as a reference, installing a base at the central line position of a lofting walkway according to the lofting position, placing a walkway beam on the base, pre-sleeving a rear hook wheel set on the walkway after the walkway beam is placed, and fixing a walkway anchor on the beam body by utilizing vertical prestress finish rolling deformed steel bars of the beam body after the walkway beam is placed;
s102, assembling a diamond frame and a parallel connection on a ground site, hoisting after the diamond frame and the parallel connection are installed, and temporarily fixing by using a chain block after the hoisting is finished;
s103, placing rear anchor carrying pole beams on each rear anchor point, inserting rear anchor rods in holes at two ends of each carrying pole beam, respectively fixing the lower ends of the rear anchor rods on 0# section beam bodies, jacking the carrying pole beams by using screw jacks, loosening the jacks after locking nuts until the hanging rollers leave the surface of the lower flange of the track and are in a non-bearing state, and anchoring the bearing frame stably;
s104, mounting the hanging basket portal frame parallel connection: channel steel is adopted to weld and fix the adjacent gantry parallel links;
s105, mounting a front upper beam of the hanging basket: hoisting a front upper cross beam of the hanging basket to a front node of a main truss of the hanging basket, firmly connecting the front upper cross beam with the front node by adopting a high-strength bolt, then welding the front upper cross beam with the front node by adopting broken welding, and then installing a hanging strip at the corresponding hanging point position of the front upper cross beam;
s106, installing a bottom basket system, and paving a panel after the bottom rail is installed;
s107, installing an outer die and an outer guide beam: before the outer die and the outer guide beam are installed, the outer guide beam is firstly hung to a corresponding position in an outer die frame on the ground, then the guide beam and the outer die are connected into a whole by bolts, a sliding frame is installed at a reserved hole of a wing plate, the outer die and the outer guide beam are hoisted together, the front end of the guide beam is hung on an upper front cross beam of a hanging basket through a hoisting rod, and the rear end of the guide beam penetrates through the sliding frame and is hung on a wing plate of a beam body through the sliding frame;
s108, adjusting the positions and elevations of the hanging basket and the template system through the screw jack and the chain block, and measuring and recording;
and S109, automatically loading, prepressing and prepressing the template and the hanging basket according to 1.2 times of the weight of the beam body, measuring and recording the elevation when the asymmetric load on the two sides is not more than 8t, unloading after the system is stabilized, and measuring and recording the elevation after unloading.
S2: pouring a beam body: the beam body pouring comprises the following steps:
s201, binding reinforcing steel bars at the positions of a bottom plate and a web plate of the mounting beam body, mounting a prestressed pipeline, and then mounting an inner guide beam of the inner guide beam to be fixed on a top plate through a suspender;
s202, installing an inner side die and a top die, adjusting the elevation to a correct position, then binding steel bars on part of a top plate of the beam body and installing a prestressed pipeline, and then accurately placing an embedded part and arranging a reserved hole;
s203: pouring concrete: mixing concrete strictly according to the proportion, conveying the mixed concrete to a construction site by using a concrete pump truck, conveying the mixed concrete to the assembled hanging basket template by using the concrete pump truck and a conveying pipeline for layered pouring, pouring each layer by about 30 cm, and pulling a slope; the concrete pipeline in S203 needs to be fixed on a concrete wall or a column head through a support and an explosion screw, so that proper connection and stable installation are ensured, the support needs to be supported by a protective layer, the concrete pump truck transports concrete to a construction site, the temperature and the suitability of the concrete need to be tested, and the concrete brick is manufactured to detect the strength of the concrete.
S204: vibrating the concrete: using a pouring anti-bubble device to carry out layered vibration on the poured concrete layer, arranging the vibrating tubes 6 to be inserted into the concrete in a row-by-row manner to a depth of more than 5 cm and tightly combine with the concrete to start vibration, vibrating each point for 20 to 30 seconds until the concrete does not obviously sink any more, no bubbles appear any more and the surface of the concrete is subject to mortar overflow; in S204, the vibrated concrete is rapidly inserted when being inserted, the distance between the front and the back of the vibrating concrete insertion is 30-50 cm, the template, the reinforcing steel bars and the embedded parts cannot be touched during vibrating, the template is tapped by using a wooden hammer when being vibrated nearby the template, the reinforcing steel bars are compacted in a dense position and the edges of the template by using iron brazes in a matching manner, and the concrete is slowly pulled out after being vibrated.
S3: curing the concrete: hanging a spray pipe of an automatic spraying system and carrying out water spraying maintenance on the concrete by using the poured concrete side wall, wherein the concrete is maintained for 1-8 time periods every day, and the maintenance time and interval can be adjusted according to actual conditions;
s4: beam prestress tension and grouting operation: performing beam prestress tensioning and grouting operation after the concrete meets the requirements of design strength, elastic modulus and age;
s5: the hanging basket moves forwards, the mounted hanging basket moves forwards, and the project of the next bridge section is continuously completed, and the method comprises the following steps:
s501, disassembling the inner and outer mold opposite pull rods, and folding or disassembling the inner mold side plate;
s502, slowly loosening the weighing suspenders on the upper front cross beam of the hanging basket to loosen the suspenders with the same section synchronously, stopping when the bottom die panel is about 100 mm away from the concrete surface, and removing the anchor rods of the rear cross beam of the bottom basket on the beam body in the same way to ensure that the bottom die is completely separated from the beam body;
s503, releasing the anchoring of the hanging basket walking track, dragging forwards the hanging basket walking track to a specified position, then re-anchoring the track, and simultaneously, positioning the front sliding seat on the hanging basket walking track;
s504, adjusting and removing the anchor rods on all rear anchor carrying pole beams by adopting a screw jack, wherein the cradle can freely tilt forwards at the moment, so that the rear hook wheel is safely and reversely buckled on the cradle walking track;
s505, a jack is used for drawing the main truss of the cradle to move so as to drive the guide system and the bottom basket system to integrally move forwards, and the rear anchor rod is anchored again after the cradle moves forwards;
s506, reinstalling the bottom basket of the hanging basket, and then anchoring the hanging strip by the lower cross beam
And S507, repeating the first step to assemble the hanging basket template.
In conclusion, the construction process of the pouring-prevention bubble for the road engineering bridge pouring comprises the pure copper motor 1, the connecting pipe 5 and the vibrating pipe 6, and comprises the following steps:
s1: assembling hanging basket templates: assembling the hanging basket templates at one end of the finished bridge column one by one according to the steps;
s2: pouring a beam body: the beam body pouring comprises the following steps:
s201, binding reinforcing steel bars at the positions of a bottom plate and a web plate of the mounting beam body, mounting a prestressed pipeline, and then mounting an inner guide beam of the inner guide beam to be fixed on a top plate through a suspender;
s202, installing an inner side die and a top die, adjusting the elevation to a correct position, then binding steel bars on part of a top plate of the beam body and installing a prestressed pipeline, and then accurately placing an embedded part and arranging a reserved hole;
s203: pouring concrete: mixing concrete strictly according to the proportion, conveying the mixed concrete to a construction site by using a concrete pump truck, conveying the mixed concrete to the assembled hanging basket template by using the concrete pump truck and a conveying pipeline for layered pouring, pouring each layer by about 30 cm, and pulling a slope; the concrete pipeline in S203 needs to be fixed on a concrete wall or a column head through a support and an explosion screw, so that proper connection and stable installation are ensured, the support needs to be supported by a protective layer, the concrete pump truck transports concrete to a construction site, the temperature and the suitability of the concrete need to be tested, and the concrete brick is manufactured to detect the strength of the concrete.
S204: vibrating the concrete: using a pouring anti-bubble device to carry out layered vibration on the poured concrete layer, arranging the vibrating tubes 6 to be inserted into the concrete in a row-by-row manner to a depth of more than 5 cm and tightly combine with the concrete to start vibration, vibrating each point for 20 to 30 seconds until the concrete does not obviously sink any more, no bubbles appear any more and the surface of the concrete is subject to mortar overflow; in S204, the vibrated concrete is rapidly inserted when being inserted, the distance between the front and the back of the vibrating concrete insertion is 30-50 cm, the template, the reinforcing steel bars and the embedded parts cannot be touched during vibrating, the template is tapped by using a wooden hammer when being vibrated nearby the template, the reinforcing steel bars are compacted in a dense position and the edges of the template by using iron brazes in a matching manner, and the concrete is slowly pulled out after being vibrated.
S3: curing the concrete: hanging a spray pipe of an automatic spraying system and carrying out water spraying maintenance on the concrete by using the poured concrete side wall, wherein the concrete is maintained for 1-8 time periods every day, and the maintenance time and interval can be adjusted according to actual conditions;
s4: beam prestress tension and grouting operation: performing beam prestress tensioning and grouting operation after the concrete meets the requirements of design strength, elastic modulus and age;
s5: and (4) moving the hanging basket forwards, moving the installed hanging basket forwards, and continuing to finish the engineering of the next bridge section.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a highway engineering bridge pouring is with construction process who prevents pouring bubble, includes a pouring anti-bubble device, its characterized in that, and pouring anti-bubble device includes pure copper motor (1), connecting pipe (5) and vibrating tube (6), pure copper motor (1) top and connecting pipe (5) fixed connection, the fixed vibrating tube (6) that is equipped with of one end that pure copper motor (1) were kept away from in connecting pipe (5), and the construction process who prevents the pouring bubble includes following step:
s1: assembling hanging basket templates: assembling the hanging basket templates at one end of the finished bridge column one by one according to the steps;
s2: pouring a beam body: the beam body pouring comprises the following steps:
s201, installing reinforcement at the positions of a bottom plate and a web of a beam body, installing a prestressed pipeline, and then installing an inner guide beam;
s202, installing an inner side die and a top die, adjusting the elevation to a correct position, then binding steel bars on part of a top plate of the beam body and installing a prestressed pipeline, and then accurately placing an embedded part and arranging a reserved hole;
s203: pouring concrete: mixing concrete strictly according to the proportion, conveying the mixed concrete to a construction site by using a concrete pump truck, conveying the mixed concrete to the assembled hanging basket template by using the concrete pump truck and a conveying pipeline for layered pouring, pouring each layer by about 30 cm, and pulling a slope;
s204: vibrating the concrete: the poured concrete layer is vibrated in a layered mode by using a pouring anti-bubble device, the vibrating pipes (6) are arranged to be inserted into the concrete in a row mode to a depth of more than 5 cm and tightly combined with the concrete to start vibrating, each point vibrates for 20 to 30 seconds until the concrete does not obviously sink any more, bubbles do not appear any more, and mortar is discharged from the surface of the concrete layer;
s3: curing the concrete: hanging a spray pipe of an automatic spraying system and carrying out water spraying maintenance on the concrete by using the poured concrete side wall, wherein the concrete is maintained for 1-8 time periods every day, and the maintenance time and interval can be adjusted according to actual conditions;
s4: beam prestress tension and grouting operation: performing beam prestress tensioning and grouting operation after the concrete meets the requirements of design strength, elastic modulus and age;
s5: the hanging basket moves forwards, the mounted hanging basket moves forwards, and the project of the next bridge section is continuously completed, and the method comprises the following steps:
s501, disassembling the inner and outer mold opposite pull rods, and folding or disassembling the inner mold side plate;
s502, slowly loosening each weighing suspender on the front upper cross beam of the hanging basket, stopping when the bottom die panel is about 100 mm away from the concrete surface, and removing the anchor rod of the rear cross beam of the bottom basket on the beam body in the same way to ensure that the bottom die is completely separated from the beam body;
s503, releasing the anchoring of the hanging basket walking track, dragging forwards the hanging basket walking track to a specified position, then re-anchoring the track, and simultaneously, positioning the front sliding seat on the hanging basket walking track;
s504, adjusting and removing all anchor rods on the rear anchor carrying pole beam by adopting a screw jack, and enabling the rear hook wheel to be safely and reversely buckled on the cradle walking track;
s505, a jack is used for drawing the main truss of the cradle to move so as to drive the guide system and the bottom basket system to integrally move forwards, and the rear anchor rod is anchored again after the cradle moves forwards;
s506, reinstalling the bottom basket of the hanging basket, and then anchoring the hanging strip by the lower cross beam
And S507, repeating the first step to assemble the hanging basket template.
2. The construction process of pouring anti-pouring air bubbles for road engineering bridge pouring according to claim 1, wherein the assembling of the hanging basket formwork of S1 comprises the following steps:
s101, taking the central line of a beam body as a reference, installing a base at the central line position of a lofting walkway according to the lofting position, placing a walkway beam on the base, pre-sleeving a rear hook wheel set on the walkway after the walkway beam is placed, and fixing a walkway anchor on the beam body by utilizing vertical prestress finish rolling deformed steel bars of the beam body after the walkway beam is placed;
s102, assembling a diamond frame and a parallel connection on a ground site, hoisting after the diamond frame and the parallel connection are installed, and temporarily fixing by using a chain block after the hoisting is finished;
s103, placing rear anchor carrying pole beams on each rear anchor point, inserting rear anchor rods in holes at two ends of each carrying pole beam, respectively fixing the lower ends of the rear anchor rods on 0# section beam bodies, jacking the carrying pole beams by using screw jacks, loosening the jacks after locking nuts until the hanging rollers leave the surface of the lower flange of the track and are in a non-bearing state, and anchoring the bearing frame stably;
s104, mounting a hanging basket portal frame parallel connection;
s105, mounting a front upper beam of the hanging basket;
s106, installing a bottom basket system, and paving a panel after the bottom rail is installed;
s107, installing an outer die and an outer guide beam;
s108, adjusting the positions and elevations of the hanging basket and the template system through the screw jack and the chain block, and measuring and recording;
and S109, automatically loading and pre-pressing the template and the hanging basket according to the weight of the beam body which is 1.2 times that of the beam body, measuring and recording the elevation, unloading after the system is stabilized, and measuring and recording the elevation after unloading.
3. The construction process of the pouring anti-pouring air bubble for the road engineering bridge pouring according to claim 2, wherein an adapter (8) is fixedly arranged below the pure copper motor (1), a rotating shaft (10) is fixedly arranged in the adapter (8), the rotating shaft (10) extends out of the adapter (8) to be rotatably connected with a reinforcing ring (9), and a motor base (7) is fixedly arranged below the reinforcing ring (9).
4. The road engineering bridge pouring is with construction technology of preventing pouring bubble according to claim 3, characterized in that, the fixed control box (2) that is equipped with in one side that keeps away from adapter (8) of pure copper motor (1), control box (2) top is equipped with master switch (3), and one side that control box (2) is close to connecting pipe (5) is equipped with handle (4), and the handle (4) inner wall is equipped with anti-skidding cushion (11).
5. The process of claim 1, wherein the concrete pipe in S203 is fixed to the concrete wall or the column head by using a bracket and an explosion screw, so as to ensure that the connection and the stable installation are proper, and the bracket is lifted by using a protective layer.
6. The construction process of the pouring prevention air bubble for road engineering bridge pouring according to claim 1, wherein the concrete pump truck in S203 transports concrete to a construction site, and then the temperature and the suitability of the concrete need to be tested, and concrete bricks are made to detect the strength of the concrete.
7. The process of claim 1, wherein in step S204, the vibrated concrete is rapidly inserted when being inserted, the distance between the front and the rear of the vibrated concrete is 30 to 50 cm, the template, the steel bars and the embedded parts cannot be touched during vibration, the template is tapped by a wooden hammer when being vibrated near the template, the steel bars are compacted at the dense positions and the corners of the template by using iron bars, and the concrete is slowly pulled out after the vibration is finished.
8. The construction process of the pouring anti-pouring air bubble for the road engineering bridge pouring according to claim 1, wherein channel steel is adopted for welding and fixing between adjacent gantry horizontal joints in the S104 installation hanging basket gantry horizontal joint.
9. The construction process of the pouring prevention bubble for road engineering bridge pouring according to claim 1, wherein S105 is used for installing a front upper beam of the hanging basket, the front upper beam of the hanging basket is hoisted to a front node of a main truss of the hanging basket, the front upper beam and the front node are welded firmly by adopting a high-strength bolt, then a hanging strip is installed at a position corresponding to a hanging point of the front upper beam.
10. The process of claim 1, wherein before the outer mold and the outer guide beam are installed in the step S107, the outer guide beam is hung to a corresponding position inside the outer mold frame on the ground, the outer guide beam and the outer mold are connected into a whole by bolts, the carriage is installed at the reserved hole of the wing plate, the outer mold and the outer guide beam are lifted together, the front end of the guide beam is hung on the front upper cross beam of the hanging basket through the hanger rod, and the rear end of the guide beam passes through the carriage and is hung on the wing plate of the beam body through the carriage.
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| CN202110845493.9A CN113502750A (en) | 2021-07-26 | 2021-07-26 | Construction process of pouring-preventing bubbles for pouring highway engineering bridge |
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| CN202110845493.9A CN113502750A (en) | 2021-07-26 | 2021-07-26 | Construction process of pouring-preventing bubbles for pouring highway engineering bridge |
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Cited By (1)
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| CN114942193A (en) * | 2022-05-31 | 2022-08-26 | 无锡精瑞机械制造有限公司 | Automatic testing machine for hydraulic pressure test of gas cylinder |
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