CN111996916A - Cast-in-place box girder integrated construction equipment and construction method thereof - Google Patents

Cast-in-place box girder integrated construction equipment and construction method thereof Download PDF

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Publication number
CN111996916A
CN111996916A CN202010772933.8A CN202010772933A CN111996916A CN 111996916 A CN111996916 A CN 111996916A CN 202010772933 A CN202010772933 A CN 202010772933A CN 111996916 A CN111996916 A CN 111996916A
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CN
China
Prior art keywords
box girder
cast
trolley
poured
pouring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010772933.8A
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Chinese (zh)
Inventor
陈鸣
薛志武
孙策
李长林
吴建明
郑和晖
王敏
夏熙
刘景红
林国辉
赖祺宇
于晓洧
戴书学
夏昊
巫兴发
肖林
田飞
李刚
代浩
陈飞翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Expressway Co ltd
CCCC Second Harbor Engineering Co
Original Assignee
Shenzhen Expressway Co ltd
CCCC Second Harbor Engineering Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Expressway Co ltd, CCCC Second Harbor Engineering Co filed Critical Shenzhen Expressway Co ltd
Priority to CN202010772933.8A priority Critical patent/CN111996916A/en
Publication of CN111996916A publication Critical patent/CN111996916A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

Abstract

The invention discloses cast-in-place box girder integrated construction equipment and a construction method thereof, wherein the cast-in-place box girder integrated construction equipment comprises a processing workshop, a movable mould frame, a trolley on a girder, a material distribution system, a tamping system and a surface collecting system which are sequentially arranged along the longitudinal bridge direction of a cast-in-place box girder bridge floor; the processing workshop is used for processing a steel bar part required by the cast-in-place box girder; the movable mould frame is used for forming a pouring template structure of the box girder segment to be poured; the trolley on the beam is used for transferring the template on the poured box girder section and the reinforcing steel bar part to the box girder section to be poured where the movable formwork is located; the material distribution system is used for concrete pouring; the tamping system is used for tamping concrete; the face folding system is used for folding and leveling pouring faces of poured box girder segments after pouring and tamping. Can be widely applied to the technical field of building construction equipment.

Description

Cast-in-place box girder integrated construction equipment and construction method thereof
Technical Field
The invention relates to the technical field of building construction equipment. More particularly, the invention relates to cast-in-place box girder integrated construction equipment and a construction method thereof.
Background
Techniques used in the art:
the cast-in-place box girder is a widely used main girder form, adopts a one-time pouring mode, has good structural integrity, directly falls on a pier stud in the cast-in-place box girder construction structure, does not need to be provided with a pier top capping beam, can reduce the overall height of the bridge, and is widely applied to urban bridges.
The traditional construction method of the cast-in-place box girder is mainly a support method and comprises the following steps: foundation treatment, support erection, template installation, reinforcement and prestressed pipeline installation, concrete pouring and maintenance, prestressed steel bundle tensioning, support dismantling and the like.
The disadvantages of the techniques used:
the traditional construction method of the cast-in-place box girder mainly comprises the following defects: the construction process is multiple, and the construction period is long; each construction procedure is mechanized, the automation level is low, the manpower requirement is large, and the safety and quality control difficulty is high.
The improvement measures adopted for solving the defects are as follows:
compared with the traditional construction method of the cast-in-place box girder, the construction method based on the movable formwork has more advantages. The movable formwork is a large beam-making support system which is provided with a formwork and can automatically shift between bridge spans and is used for supporting and pouring concrete box beams.
The main differences and advantages from the traditional construction method of the cast-in-place box girder are as follows: the support system of the movable formwork is directly supported on a pier or a bearing platform with higher bearing capacity without foundation treatment; the support system and the template system of the movable formwork can automatically shift between the bridge spans and can be recycled step by step, so that a large amount of manpower and material resources consumed by installing and dismantling the support and the template in the traditional construction method are saved.
The above improvement measures have the following defects:
the construction technology of the movable formwork at the present stage cannot essentially solve the problem that the reinforcement and concrete pouring cannot be operated in parallel, cannot achieve the construction efficiency of factory-type line production, and has low function integration level. The advantages of the cast-in-place box girder manufacturing technology based on the movable formwork in the aspects of improving quality and shortening construction period are still not obvious enough, the increasing social requirements are difficult to meet, and the demand on the more efficient cast-in-place box girder manufacturing technology is urgent.
Disclosure of Invention
The invention aims to provide cast-in-place box girder integrated construction equipment and a construction method thereof.
In order to achieve these objects and other advantages in accordance with the present invention, there is provided a cast-in-place box girder integral construction apparatus, including a processing workshop, a movable formwork, a trolley on the girder, a distributing system, a tamping system and a surface retracting system, which are sequentially arranged along a longitudinal direction of a cast-in-place box girder deck;
the processing workshop is used for processing a steel bar part required by the cast-in-place box girder;
the movable formwork is arranged on the bridge floor and positioned at the joint of the poured box girder segment and the box girder segment to be poured, and is used for forming a pouring formwork structure of the box girder segment to be poured;
the trolley on the beam is arranged by depending on the movable formwork and is used for transferring the template on the poured box girder section and the reinforcing steel bar part to the box girder section to be poured where the movable formwork is located;
the distribution system is arranged by depending on the trolley on the beam, is positioned right above the section of the box girder to be poured and is used for pouring concrete;
the tamping system is arranged by depending on the trolley on the beam, is positioned right above the section of the box girder to be poured and is used for tamping concrete;
the surface folding system is used for folding and leveling the pouring surface of the poured box girder segment after pouring and tamping;
the movable formwork, the trolley on the beam, the material distribution system, the tamping system and the surface collecting system can all displace along the bridge surface of the cast-in-place box beam.
Preferably, the moving mold frame comprises,
the plurality of pairs of brackets are symmetrically arranged along the longitudinal bridge direction of the cast-in-place box girder bridge floor and are positioned on a pier body bearing platform at the lower part of the cast-in-place box girder bridge floor;
the pair of formwork main beams are respectively and correspondingly supported and arranged on the brackets;
the formwork crossbeams are arranged at intervals along the transverse bridge direction of the cast-in-place box girder bridge floor, and two ends of each formwork crossbeam are correspondingly arranged on a pair of symmetrically arranged formwork main beams;
and the bottom moulds are paved along the longitudinal direction of the cast-in-place box girder bridge floor and form a pouring plane of the box girder segment to be poured.
Preferably, the trolley on the beam includes,
the front support legs of each pair of trolleys are positioned on the section of the box girder to be poured and are correspondingly arranged at the top of the main girder of the movable formwork;
the trolley rear supporting legs are positioned at the poured box girder segment and arranged on the outer side of a longitudinal bridge of the poured box girder segment through a pair of rails, and the trolley rear supporting legs are positioned on the rails and can slide along the length direction of the rails;
the trolley truss is a rectangular steel frame beam and is supported and arranged at the tops of all the front trolley support legs and all the rear trolley support legs;
and the hoisting system is arranged by depending on the trolley truss and can move along the space direction of the bottom of the trolley truss, and the hoisting system is used for hoisting the steel bar part to the section of the box girder to be poured.
Preferably, the material distribution system comprises a cloth material distribution system,
the distributing machines are all arranged at the bottom of the trolley truss and are positioned right above the box girder section to be poured;
the pump truck is communicated with each distributing machine through a plurality of pump pipes;
and the concrete pump truck is connected with the pump truck.
Preferably, the tamping system comprises a plurality of tamping frames which are respectively arranged on the lifting system of the trolley on the beam, and the lifting system comprises a crane which is used for connecting the tamping frames and completing the tamping process.
Preferably, the process plant is provided on a poured box beam segment, the process plant comprising,
the binding jig frame is used for binding the stirrups and the longitudinal bars into the reinforced bar part;
and the temporary storage platform is arranged in the processing shed and used for storing the steel bar parts subjected to binding forming.
Preferably, the top of the trolley on the beam is also covered and provided with a telescopic ceiling.
A construction method of cast-in-place box girder integrated construction equipment comprises the following steps:
s1, mounting a bottom die at the section of the steel box girder to be cast;
s2, hoisting the steel bar part to the bottom die in the step S1, and installing and laying;
s3, sequentially carrying out concrete pouring, vibrating and leveling procedures on the reinforced bar part in the step S2 by using the distributing machine, and finishing maintenance;
s4, performing a demolding procedure after the concrete pouring surface subjected to the curing procedure in the step S3 meets the preset design requirement;
s5, performing a prestressed steel beam tension construction process and an anchor sealing construction process on the concrete surface subjected to the demoulding process in the step S4;
s6, sequentially dismantling the devices for lifting, pouring, vibrating, leveling and maintaining in the steps;
and S7, repeating the steps, and constructing the next box girder segment to be cast.
Preferably, in step S2, the hoisting the reinforcement bar part further includes,
the reinforcing steel bar part with the smaller beam width can be bound into a whole in advance, a prestressed pipeline and an inner template are installed, and the reinforcing steel bar part is transported to the tail end of a cast beam section and then lifted to a bottom die of a section to be cast by the trolley on the beam; and dividing the steel bar part products with larger width into a plurality of units to form a plurality of part products, and respectively transporting and lifting the part products in place to preset positions on the bottom die.
Preferably, the concrete pouring, vibrating, leveling and curing process in the step S3 includes,
connecting the concrete pump truck with the towing pump, and then connecting the pump pipe to perform a concrete pouring process; after pouring, hoisting and installing the vibrating system and the face collecting system to the bottom of the trolley on the beam, and sequentially carrying out the processes of vibrating, leveling and face collecting of the cast-in-place bridge deck; and finally, coating a film on the surface of the poured concrete, and preserving moisture and maintaining.
The invention at least comprises the following beneficial effects:
1. the cast-in-place box girder integrated construction equipment provided by the invention integrates the functions of spanning a formwork, adjusting a template, integrally hoisting and installing a steel reinforcement framework, automatically pouring and curing concrete, constructing in a closed manner and the like, has high automation and mechanization degree and strong function expansibility, and can realize the industrial construction of the cast-in-place box girder.
2. The cast-in-place box girder integrated construction method provided by the invention can realize synchronous concrete pouring construction and reinforcement cage binding, thereby forming a plurality of working surfaces and realizing flow process; in addition, the field on the beam is used as a steel bar part processing workshop, a steel bar processing factory does not need to be established independently, and the field utilization rate is improved.
3. The construction method of the cast-in-place box girder integrated construction equipment machine further shortens the construction period during construction, improves the construction quality of the cast-in-place box girder, reduces the manual operation intensity, ensures the operation safety, indicates the direction for industrialized construction of bridges, and has remarkable social and economic effects.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is an overall structural view of a cast-in-place box girder integrated construction apparatus of the present invention;
FIG. 2 is a schematic longitudinal bridge structure of the cast-in-place box girder integrated construction equipment of the present invention;
FIG. 3 is a schematic diagram of a transverse bridge structure of the cast-in-place box girder integrated construction equipment of the invention;
fig. 4 is a position structure diagram of the tamping system according to the present invention.
The specification reference numbers indicate: 1. the system comprises a processing workshop, 2, a trolley on a beam, 3, a movable mould base, 4, a distributing machine, 5, a bottom mould, 6, a bracket, 7, a mould base main beam, 8, a mould base cross beam, 9, a pump pipe, 10, a trolley front supporting leg, 11, a trolley truss, 12, a trolley rear supporting leg, 13, a hoisting system, 14 towing pumps, 15, a concrete pump truck and 16 tamping systems.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-4, a cast-in-place box girder integrated construction device comprises a processing workshop 1, a movable formwork 3, an on-beam trolley 2, a material distribution system, a tamping system 16 and a surface collecting system which are sequentially arranged along a longitudinal bridge direction of a cast-in-place box girder bridge floor;
the processing workshop 1 is used for processing a steel bar part required by the cast-in-place box girder;
the movable formwork 3 is arranged on the bridge floor and positioned at the joint of the poured box girder segment and the box girder segment to be poured, and is used for forming a pouring formwork structure of the box girder segment to be poured;
the trolley 2 on the beam is supported by the movable formwork 3 and is used for transferring the template on the poured box girder section and the reinforcing steel bar part to the box girder section to be poured where the movable formwork 3 is located;
the distribution system is arranged by depending on the trolley 2 on the beam, is positioned right above the section of the box girder to be poured and is used for pouring concrete;
the tamping system 16 is arranged by depending on the trolley 2 on the beam, is positioned right above the section of the box girder to be poured and is used for tamping concrete;
the surface folding system is used for folding and leveling the pouring surface of the poured box girder segment after pouring and tamping;
the movable formwork 3, the trolley 2 on the beam, the distributing system, the tamping system 16 and the surface collecting system can all displace along the bridge surface of the cast-in-place box beam.
In the technical scheme, the movable formwork 3 is arranged above a to-be-poured area of the bridge floor according to construction requirements, then the trolley 2 on the mounting beam is arranged, the trolley 2 on the beam is used for moving the template and the steel bar parts to the to-be-poured section to be spliced, after the template and the steel bar parts are mounted, concrete pouring is carried out by using the distributing system, the template and the steel bar parts are tamped by the tamping system 16 in time after pouring, a primary pouring surface of the to-be-poured section is formed, then the surface is flattened by using the surface folding system, and finally the poured section is maintained.
In another embodiment, the moving mold frame 3 includes:
the plurality of pairs of brackets 6 are symmetrically arranged along the longitudinal bridge direction of the cast-in-place box girder bridge floor and are positioned on a pier body bearing platform at the lower part of the cast-in-place box girder bridge floor;
a plurality of pairs of formwork main beams 7 which are respectively and correspondingly supported and arranged on the plurality of brackets 6;
the formwork crossbeams 8 are arranged at intervals along the transverse bridge direction of the cast-in-place box girder bridge floor, and two ends of each formwork crossbeam 8 are correspondingly arranged on a pair of symmetrically arranged formwork main beams 7;
and the bottom moulds 5 are paved along the longitudinal direction of the cast-in-place box girder bridge floor and form a pouring plane of the box girder segment to be poured.
In the technical scheme, the whole die carrier can longitudinally move or transversely move on the pier-side bracket 6 or the tire-type support, the bottom die 5 can transversely open and close through transverse movement, and the position of the die plate can be adjusted through a screw rod of the bottom die 5 or a hydraulic jack.
In another solution, said trolley 2 on the beam comprises,
the front support legs 10 of the trolleys in each pair are positioned on the section of the box girder to be poured, and the top of the main girder of the movable formwork 3 is correspondingly arranged;
the trolley rear supporting legs are positioned at the poured box girder segment and arranged on the outer side of a longitudinal bridge of the poured box girder segment through a pair of rails, and the trolley rear supporting legs are positioned on the rails and can slide along the length direction of the rails;
the trolley truss 11 is a rectangular steel frame beam and is supported and arranged at the tops of all the front trolley support legs 10 and all the rear trolley support legs;
and the hoisting system 13 is arranged by depending on the trolley truss 11 and can move along the spatial direction of the bottom of the trolley truss 11, and the hoisting system 13 is used for hoisting the steel bar part to the box girder segment to be poured.
In the technical scheme, the trolley 2 on the beam is used for framework support of the whole pouring system, the front supporting leg of the trolley 2 on the beam is supported at the front end of a main beam of the movable mould frame 3 and is fixedly connected with the main beam, the rear supporting leg is supported on the top surface of a web plate on the outer side of a poured box girder through a rail, and a longitudinal pushing oil cylinder is arranged between the rear supporting leg and the rail, so that the integral longitudinal movement of the trolley 2 on the beam can be realized; the hoisting system 13 comprises a crane cross beam, a crane, a lifting appliance and the like which are erected between main beams of the trolley, has the functions of traveling in the longitudinal direction and the transverse direction, and can hoist the steel reinforcement framework and the inner template to the upper part of the formwork from a poured beam surface.
In another technical scheme, the material distribution system comprises,
the distributing machines 4 are arranged at the bottom of the trolley truss 11 and are positioned right above the box girder section to be poured;
the pump truck is communicated with each distributing machine 4 through a plurality of pump pipes 9;
and the concrete pump truck 14 is connected with the pump truck.
In the above technical scheme, the material distributor 4 is integrated on the main beam or the support leg of the trolley 2 on the beam, and a plurality of material distributors 4 are arranged according to the material distribution diameter of a single material distributor 4, so as to realize the full coverage of the beam to be poured. The pump pipe 9 connected between the distributing machine 4 and the trailer pump 14 is arranged depending on a main beam and a leg column of the equipment, so that the occupied beam surface can be avoided, and the operation surface is tidier. The trailer pump 14 may be placed at the bottom of a beam or on a poured beam surface depending on the conditions of the cast-in-place, and connected to the concrete pump truck 14.
In another technical solution, the tamping system 16 includes a plurality of tamping frames respectively disposed on the hoisting system 13 of the trolley 2 on the beam, and the hoisting system 13 includes a crane, and the crane is used to connect the tamping frames and complete the tamping process.
In the technical scheme, the hanging plug-in type vibrating frame can directly utilize a steel bar lifting appliance integrated with a vibrating rod or an independent frame structure integrated with the vibrating rod. When the concrete pouring machine is in a concrete pouring process, the vibrating frame is hung on a trolley crane, the vibrating rod is inserted into the gap of the reinforcing steel bars to complete the vibration of the top plate concrete, and the vibration of the web plate and the bottom plate is completed manually. The front end of the leveling and face-closing platform can perform leveling operation on the beam surface. When in the non-concrete pouring process, the vibration system is stored on the front support leg of the trolley 2 on the beam.
Furthermore, the noodle folding system is composed of the rear end of the leveling noodle folding platform, a supporting track and a traveling system. The flattening of beam surface and receipts face can be accomplished in step to the flattening receipts face platform, the support rail arranges on the external mold, when the case roof beam width is great, can increase the support rail in middle web position, and the vertical short steel bar connection that support rail and web reinforcing bar set up through the interval. When in the non-concrete pouring process, the surface collecting system is stored on the front supporting leg of the trolley 2 on the beam.
In another solution, the process plant 1 is arranged on a section of a poured box girder, the process plant 1 comprising,
the binding jig frame is used for binding the stirrups and the longitudinal bars into the reinforced bar part;
and the temporary storage platform is arranged in the processing shed and used for storing the steel bar parts subjected to binding forming.
In the above technical solution, the reinforcing bar part processing workshop 1 is arranged on the poured beam section, and can be fixed (i.e. the reinforcing bar part processing workshop 1 is arranged at the beam end or at some other fixed position) or mobile (the reinforcing bar part processing workshop 1 advances with the push of the poured beam section and is arranged at the tail of the trolley 2 on the beam). The reinforcing steel bar part can adopt a manual binding mode, or a reinforcing steel bar net sheet is manufactured firstly and then is bent and assembled into the reinforcing steel bar part. Reinforcing bar portion article processing vehicle 1 contains reinforcing bar portion article processing canopy, reinforcing bar portion article ligature bed-jig, reinforcing bar portion article storage rack, loop wheel machine etc. accomplishes the preparation of reinforcing bar portion article on the bed-jig after, transports to the storage rack by the loop wheel machine, transports 2 afterbody on the roof beam by the flatbed truck again. When adopting portable workshop 1, reinforcing bar portion article storage rack is located 2 afterbody of platform truck on the roof beam promptly, does not need the flatbed to carry out the transportation on the roof beam.
In another technical scheme, a telescopic ceiling is further arranged on the top of the trolley 2 on the beam in a covering mode.
A construction method of cast-in-place box girder integrated construction equipment comprises the following steps:
s1, installing a bottom die 5 at the section of the steel box girder to be poured;
s2, hoisting the steel bar parts to the bottom die 5 in the step S1, and installing and laying;
s3, using the spreader 4 to sequentially perform concrete pouring, vibrating and leveling procedures on the reinforced bar part in the step S2, and completing maintenance;
s4, performing a demolding procedure after the concrete pouring surface subjected to the curing procedure in the step S3 meets the preset design requirement;
s5, performing a prestressed steel beam tension construction process and an anchor sealing construction process on the concrete surface subjected to the demoulding process in the step S4;
s6, sequentially dismantling the devices for lifting, pouring, vibrating, leveling and maintaining in the steps;
and S7, repeating the steps, and constructing the next box girder segment to be cast.
In another technical solution, in the step S2, the hoisting the reinforcement bar part further includes,
the reinforcing steel bar parts with smaller beam width can be bound into a whole in advance, a prestressed pipeline and an inner template are installed, and the reinforcing steel bar parts are transported to the tail end of a cast beam section and then lifted to a bottom die 5 of a section to be cast by the trolley 2 on the beam; and dividing the steel bar part products with larger width into a plurality of units to form a plurality of part products, and respectively transporting and lifting the part products in place to preset positions on the bottom die 5.
In another technical solution, the concrete pouring, vibrating, leveling and curing process in the step S3 includes,
after the concrete pump truck 14 is connected with the towing pump 14, the pump pipe 9 is connected to carry out a concrete pouring process; after pouring, hoisting and installing the vibrating system and the face collecting system to the bottom of the trolley 2 on the beam, and sequentially carrying out the processes of vibrating, leveling and face collecting of the cast-in-place bridge deck; and finally, coating a film on the surface of the poured concrete, and preserving moisture and maintaining.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The cast-in-place box girder integrated construction equipment is characterized by comprising a processing workshop, a movable formwork, a trolley on a girder, a material distribution system, a tamping system and a surface collecting system which are sequentially arranged along the longitudinal bridge direction of a cast-in-place box girder bridge floor;
the processing workshop is used for processing a steel bar part required by the cast-in-place box girder;
the movable formwork is arranged on the bridge floor and positioned at the joint of the poured box girder segment and the box girder segment to be poured, and is used for forming a pouring formwork structure of the box girder segment to be poured;
the trolley on the beam is arranged by depending on the movable formwork and is used for transferring the template on the poured box girder section and the reinforcing steel bar part to the box girder section to be poured where the movable formwork is located;
the distribution system is arranged by depending on the trolley on the beam, is positioned right above the section of the box girder to be poured and is used for pouring concrete;
the tamping system is arranged by depending on the trolley on the beam, is positioned right above the section of the box girder to be poured and is used for tamping concrete;
the surface folding system is used for folding and leveling the pouring surface of the poured box girder segment after pouring and tamping;
the movable formwork, the trolley on the beam, the material distribution system, the tamping system and the surface collecting system can all displace along the bridge surface of the cast-in-place box beam.
2. The cast-in-place box girder integral construction equipment as claimed in claim 1, wherein the moving formwork comprises,
the plurality of pairs of brackets are symmetrically arranged along the longitudinal bridge direction of the cast-in-place box girder bridge floor and are positioned on a pier body bearing platform at the lower part of the cast-in-place box girder bridge floor;
the pair of formwork main beams are respectively and correspondingly supported and arranged on the brackets;
the formwork crossbeams are arranged at intervals along the transverse bridge direction of the cast-in-place box girder bridge floor, and two ends of each formwork crossbeam are correspondingly arranged on a pair of symmetrically arranged formwork main beams;
and the bottom moulds are paved along the longitudinal direction of the cast-in-place box girder bridge floor and form a pouring plane of the box girder segment to be poured.
3. A cast-in-place box girder integral construction equipment according to claim 1 or 2, wherein the trolley on the girder comprises,
the front support legs of each pair of trolleys are positioned on the section of the box girder to be poured and are correspondingly arranged at the top of the main girder of the movable formwork;
the trolley rear supporting legs are positioned at the poured box girder segment and arranged on the outer side of a longitudinal bridge of the poured box girder segment through a pair of rails, and the trolley rear supporting legs are positioned on the rails and can slide along the length direction of the rails;
the trolley truss is a rectangular steel frame beam and is supported and arranged at the tops of all the front trolley support legs and all the rear trolley support legs;
and the hoisting system is arranged by depending on the trolley truss and can move along the space direction of the bottom of the trolley truss, and the hoisting system is used for hoisting the steel bar part to the section of the box girder to be poured.
4. A cast-in-place box girder integral construction equipment according to claim 1 or 3, wherein the cloth system comprises,
the distributing machines are all arranged at the bottom of the trolley truss and are positioned right above the box girder section to be poured;
the towing pump is communicated with each distributing machine through a plurality of pump pipes;
and the concrete pump truck is connected with the pump truck.
5. The cast-in-place box girder integrated construction equipment as claimed in claim 1 or 3, wherein the tamping system comprises a plurality of tamping frames respectively disposed on the lifting system of the trolley on the girder, and the lifting system comprises a crane, and the crane is used to connect the tamping frames and complete the tamping process.
6. The cast-in-place box girder integral construction equipment as claimed in claim 1, wherein the process shop is provided on the poured box girder section, the process shop comprising,
the binding jig frame is used for binding the stirrups and the longitudinal bars into the reinforced bar part;
and the temporary storage platform is arranged in the processing shed and used for storing the steel bar parts subjected to binding forming.
7. The cast-in-place box girder integral construction equipment as claimed in claim 1, wherein a telescopic ceiling is further provided to cover the top of the trolley on the girder.
8. A construction method of cast-in-place box girder integrated construction equipment comprises the following steps:
s1, mounting a bottom die at the section of the steel box girder to be cast;
s2, hoisting the steel bar part to the bottom die in the step S1, and installing and laying;
s3, sequentially carrying out concrete pouring, vibrating and leveling procedures on the reinforced bar part in the step S2 by using the distributing machine, and finishing maintenance;
s4, performing a demolding procedure after the concrete pouring surface subjected to the curing procedure in the step S3 meets the preset design requirement;
s5, performing a prestressed steel beam tension construction process and an anchor sealing construction process on the concrete surface subjected to the demoulding process in the step S4;
s6, sequentially dismantling the devices for lifting, pouring, vibrating, leveling and maintaining in the steps;
and S7, repeating the steps, and constructing the next box girder segment to be cast.
9. The construction method of cast-in-place box girder one-piece construction equipment as claimed in claim 8, wherein the step S2 of lifting the reinforcement part further comprises,
the reinforcing steel bar part with the smaller beam width can be bound into a whole in advance, a prestressed pipeline and an inner template are installed, and the reinforcing steel bar part is transported to the tail end of a cast beam section and then lifted to a bottom die of a section to be cast by the trolley on the beam; and dividing the steel bar part products with larger width into a plurality of units to form a plurality of part products, and respectively transporting and lifting the part products in place to preset positions on the bottom die.
10. The construction method of a cast-in-place box girder one-piece construction apparatus as claimed in claim 8, wherein the processes of pouring, vibrating, leveling and curing of concrete in the step S3 include,
connecting the concrete pump truck with the towing pump, and then connecting the pump pipe to perform a concrete pouring process; after pouring, hoisting and installing the vibrating system and the face collecting system to the bottom of the trolley on the beam, and sequentially carrying out the processes of vibrating, leveling and face collecting of the cast-in-place bridge deck; and finally, coating a film on the surface of the poured concrete, and preserving moisture and maintaining.
CN202010772933.8A 2020-08-04 2020-08-04 Cast-in-place box girder integrated construction equipment and construction method thereof Pending CN111996916A (en)

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