CN111042004A - Hanging basket track beam traveling method - Google Patents

Hanging basket track beam traveling method Download PDF

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Publication number
CN111042004A
CN111042004A CN201911241532.3A CN201911241532A CN111042004A CN 111042004 A CN111042004 A CN 111042004A CN 201911241532 A CN201911241532 A CN 201911241532A CN 111042004 A CN111042004 A CN 111042004A
Authority
CN
China
Prior art keywords
hanging basket
cradle
track
rail
running
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
CN201911241532.3A
Other languages
Chinese (zh)
Inventor
周文
苏胜春
张应红
徐鹏祥
游威
范伟
刑锋
连晖
张峰
黄滔
喻伟
廖文锋
高剑波
李海泉
梁剑鑫
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.)
China Railway Guangzhou Engineering Group Co Ltd CRECGZ
CRECGZ Bridge Engineering Co Ltd
Original Assignee
China Railway Guangzhou Engineering Group Co Ltd CRECGZ
CRECGZ Bridge Engineering Co Ltd
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 China Railway Guangzhou Engineering Group Co Ltd CRECGZ, CRECGZ Bridge Engineering Co Ltd filed Critical China Railway Guangzhou Engineering Group Co Ltd CRECGZ
Priority to CN201911241532.3A priority Critical patent/CN111042004A/en
Publication of CN111042004A publication Critical patent/CN111042004A/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
    • E01D21/10Cantilevered erection

Abstract

The invention discloses a hanging basket rail beam traveling method, which is characterized in that buckling wheels are arranged at the front and rear points of a hanging basket to drive a hanging basket rail to lift, so that the hanging basket rail travels forwards, large-scale special hoisting equipment is avoided, evidence obtaining and approval procedures can be effectively reduced, the construction cost and the hoisting operation risk are reduced, the hanging basket rail travels forwards integrally, the field assembling and disassembling and transporting procedures are reduced, the rail damage is avoided, the traveling efficiency is improved, the hanging basket traveling forwards process is only subjected to rolling friction resistance of the buckling wheels, and the forward operation can be completed manually. The invention is used in the construction field of the hanging basket.

Description

Hanging basket track beam traveling method
Technical Field
The invention relates to the field of hanging basket construction, in particular to a hanging basket track beam traveling method.
Background
Along with the large-scale construction of highway and railway express road networks in China, a large number of bridges across rivers and seas are built in succession, and the hanging basket cantilever pouring construction method as a mature technology is increasingly applied to engineering construction. At present, the forward movement of the hanging basket rail is mostly carried out by adopting a pulling method, a pushing method and a sectional operation method. Pulling method and pushing method: the whole hanging basket is jacked up, and the front end beam body is provided with a reaction point to pull or jack the track to a designed position by a chain block, a winch or a jack device. A segmental operation method: the track is manufactured in sections, and the sections of the track are connected by high-strength bolts. When the track runs, the bolt connection between the sections and the anchoring connection between the sections and the beam body are removed, and the track sections at the rear end are hoisted one by one to the front end by hoisting equipment to be spliced and connected and firmly anchored with the beam body.
The draw method and the push method have the following defects: firstly, a reliable reaction point is required to be arranged at the front end or the rear end when the cradle track moves forwards each time; secondly, the rail of the hanging basket has certain weight, and the rail is usually contacted with a concrete beam surface or a profile steel of a landing pad, and the force for pulling or pushing is larger, so that the required equipment is more complex. The disadvantages of the segmental operation method are mainly: firstly, in the forward moving process of the cradle track, connecting bolts among track sections need to be repeatedly installed and dismantled, and the operation is troublesome; secondly, the connection precision of the high-strength bolts of the track sections is low, the gap between the bolts and screw holes is large, if the beam surface is not flat or the shoveling pad is not firm, when the main truss of the hanging basket runs through the front section and the rear section of the track, the track is staggered and blocked due to different front and rear stress, and even the hanging basket can overturn in serious cases; and thirdly, large-scale hoisting equipment is required for assistance in the transfer of the track, so that the construction cost and the hoisting operation risk are increased.
Disclosure of Invention
The invention aims to provide a method for running a hanging basket track beam with higher efficiency.
The technical scheme adopted by the invention is as follows:
a hanging basket track beam running method comprises the following steps:
s1: when the hanging basket pours the box girder concrete, supporting the front and rear support points at the bottom of the hanging basket on the top surface of the section of the box girder of the previous section, connecting the steel bars embedded in the section of the box girder of the previous section, and anchoring the rear end of the hanging basket by using the connected steel bars;
s2: after the concrete box of the section is poured and the strength meets the design requirement, carrying out tensioning and grouting on the permanent longitudinal prestressed tendons, then demoulding a bottom template and a side template of the hanging basket, and preparing to move the hanging basket longitudinally forwards;
s3: two sides of each supporting point in front of and behind the cradle are respectively provided with a jack, the jacks simultaneously jack upwards, and simultaneously loosen a reinforcing steel bar nut to enable the whole cradle to jack upwards, buckling wheels at the front supporting point and the rear supporting point to heighten the travelling track to enable the bottom surface of the track to be separated from the ground, and steel pipes are used for prying clamping grooves on the cradle track forwards at the two sides to enable the cradle track to move forwards and reach the position;
s4: a jack is used for jacking the hanging basket, the front and rear points of the hanging basket fall on the track, the bottom of the steel buttress is separated from the top surface of the concrete beam, the running track is anchored on the bridge floor, and the steel buttress is tightened through a suspender to form bottom separation;
s5: and pushing the cradle to travel, lifting the cradle by a jack after the cradle travels in place, adjusting the elevation of the cradle to separate the front and rear points of the cradle from the rail, connecting reinforcing steel bars, and anchoring the anchor seat at the back of the cradle to finish the travelling work of the cradle.
Further as an improvement of the technical scheme of the invention, before step S3, the anchoring steel bars at the rear part of the basket are unscrewed, the nuts at the upper parts of the steel bars are unscrewed, and the anchoring beam is reserved as the basket safety beam.
As a further improvement of the technical solution of the present invention, in step S3, each of the jacks is installed on an outer side surface of the steel pier.
Further as an improvement of the technical scheme of the invention, in step S5, the cradle is pushed to run by a hydraulic oil cylinder.
The front end of the hydraulic oil cylinder is connected with the clamping seat through a pin shaft, the clamping seat and a clamping groove on the side surface of the track are stressed by inserting and taking a steel bar, and the jack and the steel buttress are respectively hung on the front side and the rear side of the hanging basket and synchronously run along with the hanging basket.
As a further improvement of the technical scheme of the invention, the running rails are welded into a whole.
As a further improvement of the technical solution of the present invention, in step S3, the suspended height of the bottom surface of the running rail is not less than 5 cm.
The invention has the beneficial effects that: according to the hanging basket rail beam traveling method, the buckling wheels are arranged at the front and rear points of the hanging basket to drive the hanging basket rail to lift, the hanging basket rail travels forwards, large-scale special hoisting equipment is avoided, evidence obtaining and approval procedures can be effectively reduced, construction cost and hoisting operation risks are reduced, the hanging basket rail integrally travels forwards, field assembling and disassembling and transporting procedures are reduced, the rail is prevented from being damaged, traveling efficiency is improved, the hanging basket traveling process is only subjected to rolling friction resistance of the buckling wheels, and manual operation can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a view of the overall layout of a main bridge rhombic hanging basket according to the embodiment of the invention;
FIG. 2 is another perspective view of the overall layout of a main bridge prismatic pannier according to an embodiment of the present invention;
FIG. 3 is a schematic view of a sprocket installation according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 3, the invention relates to a method for running a hanging basket track beam, which comprises the following steps:
s1: when the hanging basket pours the box girder concrete, the front supporting point and the rear supporting point at the bottom of the hanging basket 2 are supported on the top surface of the poured front section of the box girder section through the copying and padding steel plate and the steel buttress, the finish-rolled threaded steel bars are connected and embedded in the poured front section of the box girder section in a height-increasing mode, and the anchor seat 4 at the rear end of the hanging basket is anchored by the connected finish-rolled threaded steel bars.
S2: after the concrete box of the section is poured, after the permanent longitudinal prestressed tendons are tensioned and grouted according to the equal strength satisfying design, the hanging basket 2 is demoulded by the bottom template and the side template, and the hanging basket 2 is prepared to move forwards longitudinally.
S3: and unscrewing the anchored finish-rolled threaded steel bars at the rear part of the hanging basket 2, screwing a small amount of nuts at the upper part of the finish-rolled threaded steel bars upwards, and reserving the anchoring beam as a hanging basket safety beam to prevent the hanging basket 2 from rotating and overturning at a front pivot (the hanging basket is heavy in front).
S4: 1 jack 5 (totally 8 jacks on the outer side surface of a steel buttress) is respectively arranged on two sides of each pivot in front of and behind the cradle 2, the jacks 5 are simultaneously jacked upwards, meanwhile, personnel are arranged to unscrew finish-rolled threaded steel bar nuts upwards one step at first to enable the whole cradle 2 to be jacked upwards by 8cm, and a steel plate is continuously copied and cushioned on the top surface of a steel support, when the top height of the cradle 2 is 8cm, the buckle wheels 3 at the front and rear pivot positions simultaneously enable the cradle track 1 to be 5cm high (a gap is reserved between the upper surface of the buckle wheel 3 and the lower surface of the upper flange of the cradle track 1), the bottom surface of the cradle track 1 is separated from the ground, and steel pipes are manually used for prying clamping grooves on the cradle track 1 forwards on two sides to enable the cradle track 1 to move forwards.
S5: the hanging basket 2 is jacked up by the jack 5, the copying steel plate is completely removed, the front and rear points of the hanging basket 2 fall on the hanging basket track 1, the bottom of the steel buttress is disengaged from the top surface of the concrete beam at the moment, the hanging basket track 1 is anchored on the bridge floor, and the steel buttress is tightened up through the hanging rod to form bottom surface disengagement.
S6: the hanging basket 2 is pushed to move by a hydraulic oil cylinder (the front end of the oil cylinder is connected with the clamping seat through a pin shaft, the clamping seat is stressed by inserting and taking a steel bar with a clamping groove on the side surface of a track, the jack 5 and the steel buttress are respectively hung on the two sides of the front supporting point and the rear supporting point of the hanging basket and synchronously move along with the hanging basket 2), after the hanging basket 2 moves in place, the jack 5 jacks upwards, the elevation of the hanging basket 2 is adjusted by a steel buttress surface lifting pad steel plate under the front supporting point and the rear supporting point of the hanging basket 2, so that the front supporting point and the rear supporting point of the hanging basket 2 are separated from the hanging basket track 1, at the moment, the load of the hanging basket 2 is directly transmitted to the stress of a concrete beam surface through the steel buttress, then finish rolling threaded steel bars are lengthened.
The hanging basket is special equipment in beam body cantilever pouring construction, the hanging basket is usually self-anchored balanced, the self-anchored balanced structure form mainly comprises a truss type and a diagonal pulling type, wherein the truss type can be divided into a plurality of parallel truss types, flat-chord non-balance weight types, bow-chord types and diamond forms according to different shapes of the truss type; the cable-stayed cradle mainly comprises prestressed cable-stayed and in-vivo cable-stayed and the like. The main structure of the cradle consists of a main truss system, a rear anchor system, a walking system and a bottom basket system; the engineering is an ultra-wide double-side box concrete beam cable-stayed bridge, and the suspension casting is carried out by adopting a combined diamond hanging basket method. The hanging basket rail runs: according to the hanging basket construction process, after the construction of the previous section of beam body is completed, the load of the hanging basket is relieved, the whole hanging basket is moved forwards to the poured beam section to be anchored, and the construction of the next section of beam body is carried out. The forward moving sequence of the hanging basket is as follows: the method comprises the steps of hanging basket load and rear anchor releasing, hanging basket bottom basket system lowering, rail advancing and fixing, hanging basket integral advancing, mounting rear anchor and bottom basket system lifting. Before the cradle moves forwards, the rail needs to be moved forwards to the corresponding position of the next section and anchored firmly, the main truss of the cradle can adopt a pulling method, a pushing method, a sectional transferring method and the like according to the rail position on the rail, the rail is separated from the beam surface by adopting an innovative method in the project, and the rapid traveling and the forward movement of the rail are realized manually.
According to the hanging basket track beam traveling method, the buckling wheels 3 are arranged at the front and rear points of the hanging basket 2 to drive the hanging basket track to lift, the hanging basket track is enabled to travel forwards, large-scale special hoisting equipment is avoided, evidence obtaining and approval procedures can be effectively reduced, construction cost and hoisting operation risks are reduced, the hanging basket track is integrally moved forwards, field assembling and disassembling and reverse transporting procedures are reduced, track damage is avoided, traveling efficiency is improved, the hanging basket 2 only receives rolling friction resistance of the buckling wheels 3 in the traveling forwards process, and forward operation can be completed manually.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (7)

1. A method for walking a hanging basket track beam is characterized by comprising the following steps:
s1: when the hanging basket pours the box girder concrete, supporting the front and rear support points at the bottom of the hanging basket on the top surface of the section of the box girder of the previous section, connecting the steel bars embedded in the section of the box girder of the previous section, and anchoring the rear end of the hanging basket by using the connected steel bars;
s2: after the concrete box of the section is poured and the strength meets the design requirement, carrying out tensioning and grouting on the permanent longitudinal prestressed tendons, then demoulding a bottom template and a side template of the hanging basket, and preparing to move the hanging basket longitudinally forwards;
s3: two sides of each supporting point in front of and behind the cradle are respectively provided with a jack, the jacks simultaneously jack upwards, and simultaneously loosen a reinforcing steel bar nut to enable the whole cradle to jack upwards, buckling wheels at the front supporting point and the rear supporting point to heighten the travelling track to enable the bottom surface of the track to be separated from the ground, and steel pipes are used for prying clamping grooves on the cradle track forwards at the two sides to enable the cradle track to move forwards and reach the position;
s4: a jack is used for jacking the hanging basket, the front and rear points of the hanging basket fall on the track, the bottom of the steel buttress is separated from the top surface of the concrete beam, the running track is anchored on the bridge floor, and the steel buttress is tightened through a suspender to form bottom separation;
s5: and pushing the cradle to travel, lifting the cradle by a jack after the cradle travels in place, adjusting the elevation of the cradle to separate the front and rear points of the cradle from the rail, connecting reinforcing steel bars, and anchoring the anchor seat at the back of the cradle to finish the travelling work of the cradle.
2. The hanging basket rail beam running method according to claim 1, characterized in that: before step S3, the anchoring steel bars at the rear part of the basket are unscrewed, and nuts at the upper parts of the steel bars are unscrewed, so that the anchoring beam is reserved as the basket safety beam.
3. The hanging basket rail beam running method according to claim 1, characterized in that: in step S3, each of the jacks is mounted on an outer side surface of the steel pier.
4. The hanging basket rail beam running method according to claim 1, characterized in that: in step S5, the cradle is pushed to travel by a hydraulic cylinder.
5. The hanging basket rail beam running method according to claim 4, characterized in that: the front end of the hydraulic oil cylinder is connected with the clamping seat through a pin shaft, the clamping seat and a clamping groove on the side face of the track are stressed by inserting and taking a steel bar, and the jack and the steel buttress are respectively hung on the front side and the rear side of the hanging basket and synchronously run along with the hanging basket.
6. The hanging basket rail beam running method according to claim 1, characterized in that: the walking rails are welded into a whole.
7. The hanging basket rail beam running method according to claim 1, characterized in that: in step S3, the suspended height of the bottom surface of the running rail is not less than 5 cm.
CN201911241532.3A 2019-12-06 2019-12-06 Hanging basket track beam traveling method Pending CN111042004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911241532.3A CN111042004A (en) 2019-12-06 2019-12-06 Hanging basket track beam traveling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911241532.3A CN111042004A (en) 2019-12-06 2019-12-06 Hanging basket track beam traveling method

Publications (1)

Publication Number Publication Date
CN111042004A true CN111042004A (en) 2020-04-21

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ID=70235039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911241532.3A Pending CN111042004A (en) 2019-12-06 2019-12-06 Hanging basket track beam traveling method

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11256521A (en) * 1998-03-09 1999-09-21 Sumitomo Constr Co Ltd Bridge erection device
CN202047376U (en) * 2011-05-05 2011-11-23 湖南中铁五新钢模有限责任公司 Walking rail device for hanging basket forward shifting
CN202194078U (en) * 2011-07-25 2012-04-18 中铁四局集团第一工程有限公司 Deck hanging basket main truss shifter
CN202705929U (en) * 2012-06-18 2013-01-30 中交二公局第一工程有限公司 Central bearing point structure of hanging basket
CN203475324U (en) * 2013-08-21 2014-03-12 中交二公局第一工程有限公司 Main-truss traveling device
CN103911957A (en) * 2014-04-09 2014-07-09 中交隧道工程局有限公司 Prestressed continuous box-girder cantilever construction basket
CN204174541U (en) * 2014-10-11 2015-02-25 东风设计研究院有限公司 Continuous girder bridge suspended casting suspended basket push unit
CN205259074U (en) * 2015-12-23 2016-05-25 重庆建工第十一建筑工程有限责任公司 Basket traveling system is hung to triangle
CN205295944U (en) * 2015-11-10 2016-06-08 浙江兴土桥梁专用装备制造有限公司 Hang basket rail -engaging device
CN206902566U (en) * 2017-06-27 2018-01-19 中交第三航务工程局有限公司 A kind of arch rib bridge girder cantilever construction Hanging Basket

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11256521A (en) * 1998-03-09 1999-09-21 Sumitomo Constr Co Ltd Bridge erection device
CN202047376U (en) * 2011-05-05 2011-11-23 湖南中铁五新钢模有限责任公司 Walking rail device for hanging basket forward shifting
CN202194078U (en) * 2011-07-25 2012-04-18 中铁四局集团第一工程有限公司 Deck hanging basket main truss shifter
CN202705929U (en) * 2012-06-18 2013-01-30 中交二公局第一工程有限公司 Central bearing point structure of hanging basket
CN203475324U (en) * 2013-08-21 2014-03-12 中交二公局第一工程有限公司 Main-truss traveling device
CN103911957A (en) * 2014-04-09 2014-07-09 中交隧道工程局有限公司 Prestressed continuous box-girder cantilever construction basket
CN204174541U (en) * 2014-10-11 2015-02-25 东风设计研究院有限公司 Continuous girder bridge suspended casting suspended basket push unit
CN205295944U (en) * 2015-11-10 2016-06-08 浙江兴土桥梁专用装备制造有限公司 Hang basket rail -engaging device
CN205259074U (en) * 2015-12-23 2016-05-25 重庆建工第十一建筑工程有限责任公司 Basket traveling system is hung to triangle
CN206902566U (en) * 2017-06-27 2018-01-19 中交第三航务工程局有限公司 A kind of arch rib bridge girder cantilever construction Hanging Basket

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