CN109505251B - Method for erecting arched steel structure truss bridge - Google Patents

Method for erecting arched steel structure truss bridge Download PDF

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Publication number
CN109505251B
CN109505251B CN201811510876.5A CN201811510876A CN109505251B CN 109505251 B CN109505251 B CN 109505251B CN 201811510876 A CN201811510876 A CN 201811510876A CN 109505251 B CN109505251 B CN 109505251B
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CN
China
Prior art keywords
bridge
steel
bearing
erecting
arched
Prior art date
Application number
CN201811510876.5A
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Chinese (zh)
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CN109505251A (en
Inventor
蒋忠良
蒋阿丽
王开礼
邓晓俊
张家放
王志国
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中铁五局集团贵州工程有限公司
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Priority to CN201811510876.5A priority Critical patent/CN109505251B/en
Publication of CN109505251A publication Critical patent/CN109505251A/en
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Publication of CN109505251B publication Critical patent/CN109505251B/en

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    • 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
    • E01D6/00Truss-type bridges

Abstract

The invention discloses a method for erecting an arched steel structure truss bridge, which comprises the steps of prefabricating a plurality of sections of steel structure bridge sections, preparing a bearing trolley consistent with the curvature of the arched bottom surface of each section of the bridge section, erecting a temporary bridge at a preselected construction site, paving a track on the temporary bridge, dragging each section of the bridge section from one end of the track to the other end of the track through the bearing trolley in sequence according to the serial number sequence, welding the sections of the bridge section into a whole, dismantling all the bearing trolleys and the temporary bridge, and finishing construction. By adopting the technical scheme, the appearance precision of the arched steel structure truss bridge is ensured, the labor intensity is reduced, the bearing trolley is convenient to process and manufacture, operations such as leveling and correction are not needed in the bridge erecting process, the construction process is simplified, related personnel can be far away from the bearing trolley and the corresponding bridge section, personnel are prevented from being damaged, and the safety of constructors is ensured.

Description

Method for erecting arched steel structure truss bridge

Technical Field

The invention discloses a method for erecting an arched steel structure truss bridge, and belongs to the technical field of bridge foundation construction.

Background

At present, under the condition that a crane cannot be used for hoisting in the construction of a steel structure bridge, dragging construction is often adopted for erection. Construction equipment for dragging common steel structure bridges is common, and the construction equipment is mainly used for installation and construction, and sections such as steel box girders and steel trusses are dragged to move to designated positions on a track. But conventional pulling is not suitable for curved arch steel trusses. If the traditional dragging device is adopted, after dragging is finished, a moulding bed consistent with the linearity of the curve box-shaped steel truss is manufactured on the construction site, and the curve box-shaped steel truss is adjusted to be in an installation line shape. Traditional drag trolley device need with the support separation, and the dolly need make a round trip to repetitious usage, because the weight of steel truss bridge segment is heavy, the overall dimension is big, and high altitude construction risk is big. In order to ensure that various actions are finished, the mechanism required by the traditional dragging device is complex in design and cannot meet the construction requirement within a limited construction period.

Disclosure of Invention

In order to solve the technical problem, the invention provides an arch steel structure truss bridge erecting method.

The invention is realized by the following technical scheme:

the invention provides a method for erecting an arched steel structure truss bridge, which comprises the following steps:

the method comprises the following steps: prefabricating a plurality of sections of steel structure bridge sections, wherein each section of bridge section is provided with an arched bottom surface, each section of bridge section is sequentially numbered, and all the bridge sections are sequentially connected end to end according to the numbering sequence to form an arched steel structure truss bridge;

step two: preparing a bearing trolley corresponding to the serial number of each bridge section in the step one, wherein the bearing trolley comprises a frame, rollers are installed at the bottom of the frame, and the top surface of the frame is a curved surface with the same curvature as that of the arched bottom surface of the bridge section corresponding to the serial number of the bearing trolley;

step three: erecting a temporary bridge at a preselected construction site, laying a track on the temporary bridge, sequentially placing the bearing trolleys at one end of the track according to the numbering sequence, fixedly connecting bridge sections corresponding to the bearing trolleys to the corresponding bearing trolleys according to the corresponding relationship of the numbers, and sequentially dragging the bearing trolleys to the other end of the track according to the numbering sequence;

step four: when all the bearing trolleys are placed on the track, two adjacent bridge sections are butt-welded together, all the bridge sections are connected to form an arch steel structure truss bridge, and two ends of the arch steel structure truss bridge are fixed on the ground;

step five: and (4) removing the fixed connection relation between each bridge section and the bearing trolley, jacking the welded arched steel structure truss bridge by using a jack, dismantling all the bearing trolleys and the temporary bridges, and finishing construction.

And in the first step, the curvatures of the arched bottom surfaces of the bridge sections are all consistent.

And in the second step, the area of the top surface of the frame of the bearing trolley is smaller than the area of the arched bottom surface of the bridge section corresponding to the serial number of the bearing trolley.

And in the third step, the bearing trolleys are sequentially dragged and driven according to the serial number sequence through a winch or an electric hoist.

And in the third step, the bearing trolleys are sequentially dragged according to the numbering sequence at constant speed.

The frame is made of steel section pipes by welding, and the top surface of the frame is composed of a plurality of upper end surfaces of the steel section pipes arranged along the vertical direction.

The roller comprises a wheel shaft and a hollow wheel body, two ends of the wheel shaft are fixedly connected with the frame, rolling bearings are sleeved at ports of two ends of the wheel body, and inner rings of the rolling bearings are sleeved in the middle of the wheel shaft.

The rail (4) is made of double-H-shaped steel.

The invention has the beneficial effects that: by adopting the technical scheme of the invention, each bridge section is prefabricated, the outline dimension precision of each bridge section is ensured, each bridge section is dragged to a preset position by the bearing trolley to be welded, the outline precision of the arched steel structure truss bridge formed after welding is greatly improved, the labor intensity is reduced, meanwhile, the area of the top surface of the frame corresponding to the curvature of the arched bottom surface of each bridge section on the bearing frame is smaller, the processing and the manufacturing are convenient, the manufacturing precision of the top surface of the frame is improved, the manufacturing cost of the bearing trolley is reduced, compared with the prior art, the whole bridge erecting process of the invention does not need to erect a jig frame, does not need to carry out leveling, correcting and other work on the assembly of each bridge section, the construction process is greatly simplified, the construction efficiency is improved, in addition, related personnel can keep away from the bearing trolley and the corresponding bridge section in the process of dragging the bearing trolley, avoid personnel to suffer damage, guaranteed constructor's safety.

Drawings

FIG. 1 is a flow chart of the construction process of the present invention;

FIG. 2 is a schematic view of the connection between the load-carrying trolley and the bridge section according to the present invention;

FIG. 3 is a main view of the present invention load-bearing cart;

FIG. 4 is a schematic view of the roller of the present invention.

In the figure: 1-bridge section, 2-frame, 3-roller, 21-frame top surface, 4-rail, 31-wheel shaft, 32-wheel body, 33-rolling bearing.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1 to 4, the method for erecting an arch-shaped steel structure truss bridge of the present invention comprises the following steps:

the method comprises the following steps: prefabricating a plurality of sections of steel structure bridge sections 1, wherein each section of bridge section 1 is provided with an arched bottom surface, each section of bridge section 1 is sequentially numbered, and when all the bridge sections 1 are sequentially connected end to end according to the numbering sequence, an arched steel structure truss bridge is formed; further, the curvature of the arched bottom surface of the bridge section 1 in the first step is consistent.

Step two: preparing a bearing trolley corresponding to the serial number of each bridge section 1 in the step one, wherein the bearing trolley comprises a frame 2, rollers 3 are installed at the bottom of the frame 2, and the top surface 21 of the frame is a curved surface with the same curvature as that of the arched bottom surface of the bridge section 1 corresponding to the serial number of the bearing trolley; further, the area of the top surface 21 of the frame of the load-bearing trolley is smaller than the area of the arched bottom surface of the bridge section 1 corresponding to the serial number of the load-bearing trolley. The frame 2 is made of a steel section pipe through welding, and the frame top surface 21 is composed of a plurality of upper end surfaces of the steel section pipe arranged along the vertical direction. The roller 3 comprises a wheel shaft 31 and a hollow wheel body 32, two ends of the wheel shaft 31 are fixedly connected with the frame 2, rolling bearings 33 are sleeved at two end ports of the wheel body 32, and inner rings of the rolling bearings 33 are sleeved in the middle of the wheel shaft 31.

Step three: erecting a temporary bridge at a preselected construction site, laying a track 4 on the temporary bridge, sequentially placing bearing trolleys at one end of the track 4 according to the numbering sequence, fixedly connecting bridge sections 1 corresponding to the bearing trolleys to the corresponding bearing trolleys according to the corresponding relationship of the numbers, and sequentially dragging the bearing trolleys to the other end of the track 4 according to the numbering sequence; further, the rail 4 is made of double-H steel. Furthermore, the bearing trolleys sequentially dragged in the third step according to the serial number sequence are driven by a winch or an electric hoist in a traction manner. The bearing trolleys are sequentially dragged at constant speed according to the numbering sequence.

Step four: when all the bearing trolleys are placed on the track 4, two adjacent bridge sections 1 are butt-welded together, so that all the bridge sections 1 are connected into an arch steel structure truss bridge, and the two ends of the arch steel structure truss bridge are fixed on the ground;

step five: and (3) removing the fixed connection relation between each bridge section 1 and the bearing trolley, jacking the welded arched steel structure truss bridge by using a jack, dismantling all the bearing trolleys and the temporary bridges, and finishing construction.

By adopting the technical scheme of the invention, each bridge section is prefabricated, the outline dimension precision of each bridge section is ensured, each bridge section is dragged to a preset position by the bearing trolley to be welded, the outline precision of the arched steel structure truss bridge formed after welding is greatly improved, the labor intensity is reduced, meanwhile, the area of the top surface of the frame corresponding to the curvature of the arched bottom surface of each bridge section on the bearing frame is smaller, the processing and the manufacturing are convenient, the manufacturing precision of the top surface of the frame is improved, the manufacturing cost of the bearing trolley is reduced, compared with the prior art, the whole bridge erecting process of the invention does not need to erect a jig frame, does not need to carry out leveling, correcting and other work on the assembly of each bridge section, the construction process is greatly simplified, the construction efficiency is improved, in addition, related personnel can keep away from the bearing trolley and the corresponding bridge section in the process of dragging the bearing trolley, avoid personnel to suffer damage, guaranteed constructor's safety.

Claims (8)

1. The method for erecting the arched steel structure truss bridge is characterized by comprising the following steps of: the method comprises the following steps:
the method comprises the following steps: prefabricating a plurality of sections of steel structure bridge sections (1), wherein each section of bridge section (1) is provided with an arched bottom surface, each section of bridge section (1) is sequentially numbered, and all the bridge sections (1) are sequentially connected end to end according to the numbering sequence to form an arched steel structure truss bridge;
step two: preparing a bearing trolley corresponding to each bridge section (1) according to the number of each bridge section in the step one, wherein the bearing trolley comprises a trolley frame (2), rollers (3) are installed at the bottom of the trolley frame (2), and the top surface of the trolley frame (2) is a curved surface with the same curvature as that of the arched bottom surface of the bridge section (1) corresponding to the number of the bearing trolley;
step three: erecting a temporary bridge at a preselected construction site, laying a track (4) on the temporary bridge, sequentially placing the bearing trolleys at one end of the track (4) according to the numbering sequence, fixedly connecting the bridge sections (1) corresponding to the bearing trolleys to the corresponding bearing trolleys according to the corresponding relationship of the numbering sequence, and sequentially dragging the bearing trolleys to the other end of the track (4) according to the numbering sequence;
step four: when all the bearing trolleys are placed on the track (4), two adjacent bridge sections (1) are butt-welded together, all the bridge sections (1) are connected into a whole to form an arched steel structure truss bridge, and two ends of the arched steel structure truss bridge are fixed on the ground;
step five: and (3) removing the fixed connection relation between each bridge section (1) and the bearing trolley, jacking the welded arched steel structure truss bridge by using a jack, dismantling all the bearing trolleys and the temporary bridges, and finishing construction.
2. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: in the first step, the curvatures of the arched bottom surfaces of the bridge sections (1) are all consistent.
3. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: in the second step, the area of the top surface of the frame (2) is smaller than the area of the arched bottom surface of the bridge section (1) corresponding to the serial number of the bearing trolley.
4. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: and in the third step, the bearing trolleys are sequentially dragged and driven according to the serial number sequence through a winch or an electric hoist.
5. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: and in the third step, the bearing trolleys are sequentially dragged according to the numbering sequence at constant speed.
6. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: the frame (2) is made of steel section pipes by welding, and the top surface of the frame (2) is composed of a plurality of upper end surfaces of the steel section pipes arranged along the vertical direction.
7. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: the roller (3) comprises a wheel shaft (31) and a hollow wheel body (32), the two ends of the wheel shaft (31) are fixedly connected with the frame (2), rolling bearings (33) are sleeved at the ports of the two ends of the wheel body (32), and the inner rings of the rolling bearings (33) are sleeved in the middle of the wheel shaft (31).
8. The method for erecting an arch-shaped steel structure truss bridge according to claim 1, wherein: the rail (4) is made of double-H-shaped steel.
CN201811510876.5A 2018-12-11 2018-12-11 Method for erecting arched steel structure truss bridge CN109505251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811510876.5A CN109505251B (en) 2018-12-11 2018-12-11 Method for erecting arched steel structure truss bridge

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Application Number Priority Date Filing Date Title
CN201811510876.5A CN109505251B (en) 2018-12-11 2018-12-11 Method for erecting arched steel structure truss bridge

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CN109505251A CN109505251A (en) 2019-03-22
CN109505251B true CN109505251B (en) 2020-06-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10183999A (en) * 1996-12-25 1998-07-14 Okabe Co Ltd Method of building movable form for arched concrete body
CN102261039A (en) * 2011-04-25 2011-11-30 长沙理工大学 Integral thrusting construction method of network tied arch bridge
CN102367650A (en) * 2011-08-05 2012-03-07 中铁一局集团厦门建设工程有限公司 Construction method of steel pipe arch bridge
CN102912736A (en) * 2012-11-07 2013-02-06 中铁六局集团有限公司 Vertical assembling construction method for trussed arch bridge
CN104562936A (en) * 2014-12-08 2015-04-29 中铁六局集团有限公司 Construction method for continuous tie bar steel tube arch bridge
CN204343170U (en) * 2014-12-08 2015-05-20 中铁六局集团有限公司 A kind of tie-rod steel pipe arch bridge continuously construction tubular arch vertical shift pushing tow system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10183999A (en) * 1996-12-25 1998-07-14 Okabe Co Ltd Method of building movable form for arched concrete body
CN102261039A (en) * 2011-04-25 2011-11-30 长沙理工大学 Integral thrusting construction method of network tied arch bridge
CN102367650A (en) * 2011-08-05 2012-03-07 中铁一局集团厦门建设工程有限公司 Construction method of steel pipe arch bridge
CN102912736A (en) * 2012-11-07 2013-02-06 中铁六局集团有限公司 Vertical assembling construction method for trussed arch bridge
CN104562936A (en) * 2014-12-08 2015-04-29 中铁六局集团有限公司 Construction method for continuous tie bar steel tube arch bridge
CN204343170U (en) * 2014-12-08 2015-05-20 中铁六局集团有限公司 A kind of tie-rod steel pipe arch bridge continuously construction tubular arch vertical shift pushing tow system

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Effective date of registration: 20200724

Address after: 550000 23 Yunshan Road, Yunyan District, Guiyang, Guizhou

Co-patentee after: CHINA RAILWAY NO.5 ENGINEERING GROUP Co.,Ltd.

Patentee after: GUIZHOU ENGINEERING COMPANY OF CHINA RAILWAY NO.5 ENGINEERING GROUP Co.,Ltd.

Address before: 550000 23 Yunshan Road, Yunyan District, Guiyang, Guizhou

Patentee before: GUIZHOU ENGINEERING COMPANY OF CHINA RAILWAY NO.5 ENGINEERING GROUP Co.,Ltd.

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