CN106149576B - On removed and construction method of installation across both wired bridge whole groups - Google Patents

On removed and construction method of installation across both wired bridge whole groups Download PDF

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Publication number
CN106149576B
CN106149576B CN201610679484.6A CN201610679484A CN106149576B CN 106149576 B CN106149576 B CN 106149576B CN 201610679484 A CN201610679484 A CN 201610679484A CN 106149576 B CN106149576 B CN 106149576B
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CN
China
Prior art keywords
support
installation
reinforcing bar
vertical
steel
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CN201610679484.6A
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Chinese (zh)
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CN106149576A (en
Inventor
王�锋
任高峰
唐辉
何平平
张林峰
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中铁二十局集团第三工程有限公司
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Priority to CN201610679484.6A priority Critical patent/CN106149576B/en
Publication of CN106149576A publication Critical patent/CN106149576A/en
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Publication of CN106149576B publication Critical patent/CN106149576B/en

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • 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

Abstract

The invention discloses being removed and construction method of installation across both wired bridge whole groups in one kind, multiple beam sections that need to remove to removed old beam carry out whole group dismounting and installation, including step respectively from front to back:First, bridge deck pavement milling;2nd, beam section support top;3rd, preparation before lifting;4th, lift and remove;5th, beam section is installed after changing;6th, next beam section whole group is removed and installation:According to step one to the method described in step 5, next beam section that need to remove to removed old beam carries out whole group dismounting and installation;7th, one or many repeat steps six, are removed and installation process until completing to remove all whole groups that need to remove beam section in old beam.The inventive method step is simple, reasonable in design and easy construction, using effect are good, and energy is easy, be rapidly completed across the whole group dismounting of both wired bridges and installation process, and work progress is safe and reliable, short construction period, economical and practical.

Description

On removed and construction method of installation across both wired bridge whole groups

Technical field

The invention belongs to technical field of bridge construction, more particularly, to being removed in one kind across both wired bridge whole groups with installing Construction method.

Background technology

In recent years, as national communication infrastructure is fast-developing, the part highway built up in early days can not be complete The demand of the current volume of traffic is adapted to, existing highway extension project project increasingly increases.Particularly original leap existing railway line Bridge on highway bearing capacity decline, the traffic loading increasingly aggravated can not have been met soon, to those bearing capacitys not The work that the bridge of foot carries out strengthening reconstruction is extremely urgent.Closing on or across the highway extension project of existing railway line In construction, for reducing various construction interference effects, both ensured that highway normal traffic was passed through, and ensured existing railway just again Normal traffic safety, the new problem studied as engineering construction field of traffic, new direction.How safe efficient, quick, orderly group Knit implementation to close on or remove and installation across the bridge whole group of existing railway line (referred to as both wired), it is ensured that cross over existing It is the main task of Reconstruction Project that the traffic safety and freeway traffic of railway line be smooth.

Lintong~Xi'an section highway is《National expressway network is planned》Middle x wire Lianyun Harbour-Huo'erguosi is at a high speed Highway (G30) is in the domestic important composition section in Shaanxi, while being also Shaanxi Province's communications and transportation sustainer.Circuit is in K118+ In 712.502 (highway pile No.) at Longhai Railway (K1048+682.5), bridge location route radius of horizontal curve 5500m, longitudinal slope 1.266%, the angle of cut of route and railway is 26.45 degree.Former road is got over using 1-17.2mT girder spans, cloth beam vertical with railway, skew bridge Just do, under-clearance 7.8m.Longhai Railway is cut subgrade below bridge location, maximum dredging depth 9.6m, is the extra large line straight line in Gansu Province at bridge location The electrified double track railway of section one-level, two station tracks, III type concrete crosstie, line spacing 4m, southern side orbit centre is away from existing Xi'an side bridge Platform 4m, north side orbit centre is away from existing Lintong side abutment 8m.It is along the increase of railway direction on former Bridge Foundation that scheme is extended at this 27 30m box beams, wherein left width increases by 13, right width increases by 14, and changes 44 17.2mT beams of old bridge Lack of support, It is 161.6m to widen rear whole bridge and extend overall length to railway direction.44 T beams of old bridge are divided into 10 groups, most group 2, maximum group altogether 5, maximum group weight reaches 138t.When carrying out reorganization and expansion construction to above-mentioned bridge, it there is no successful experience to use for reference at present, be available for borrowing The technical data of mirror is less, selects scientific and reasonable arrangement and method for construction to carry out highway bridge large volume across existing railway line, big Tonnage whole group is removed and updates installation, to ensuring that busy trunk railway safe operation and highway extension project are smoothly applied Instrument is of great significance.

The content of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing in one kind across existing Line bridge whole group is removed and construction method of installation, and its method and step is simple, reasonable in design and easy construction, using effect are good, energy Whole group that is easy, being rapidly completed across both wired bridges is removed and installation process, and work progress is safe and reliable, applies The work cycle is short, economical and practical.

In order to solve the above technical problems, the technical solution adopted by the present invention is:Removed in one kind across both wired bridge whole groups With construction method of installation, it is characterised in that:From front to back to removed old beam it is multiple need to remove beam section and carry out whole group respectively tear open Remove and installation, multiple whole groups that need to remove beam section are removed and construction method of installation all same;Remove old beam be across The more bridge main beam of existing railway line, it is assembled from front to back by multiple beam sections that need to remove to remove old beam, Duo Gesuo State the structure all same that need to remove beam section and it is armored concrete beam section, the beam section that need to remove is by M RC T Beam is assemblied to form from left to right, and wherein M is positive integer and M >=3;The rear and front end that beam section need to be removed is respectively supported at one On support pier, described need to remove is equipped with bridge deck pavement in beam section;Torn open to beam section progress whole group need to be removed any one described During except with installation, comprise the following steps:

Step 1: bridge deck pavement milling:Milling is carried out to the current bridge deck pavement constructed in beam section;

Current the constructed beam section removes beam section for the current need for carrying out whole group dismounting and installation;

Step 2: beam section support top:One is laid respectively on former and later two described support piers below current beam section of constructing The vertical branch ejection device of group, vertical branch ejection device described in every group includes M and is laid in same vertical plane from left to right along direction across bridge On the vertical branch ejection device, the rear and front end bottom of each RC T-beam be provided with one it is described vertical Branch ejection device;Current institute is made synchronously by the current upward support top of beam section level of constructing by vertical branch ejection device described in two groups again Beam section of constructing is separated with two support piers;

Step 3: preparation before lifting:A suspension bracket is laid respectively above the rear and front end of current beam section of constructing, And lay a lower joist respectively in the underface of two suspension brackets, two lower joists are respectively supported at and currently constructed The rear and front end bottom of beam section;Two suspension brackets are lifted on the advance Bridge Erector being set up on removed old beam respectively again Immediately below former and later two overhead traveling cranes, the Bridge Erector, two suspension brackets and two lower joist composition Lift-on/Lift-off Systems;

Two suspension brackets and two lower joists are laid along the transverse width direction of current constructed beam section, Two suspension brackets are in symmetrical laying, and two lower joists are in symmetrical laying;Installed from left to right on each suspension bracket There is the vertical lifting part that M groups are lifted to the M RC T-beams respectively, multigroup vertical lifting part is uniformly set On same vertical plane;Vertical lifting part described in every group includes the two vertical lifting parts in left and right, two vertical liftings Piece installing is located at the web left and right sides for lifting RC T-beam respectively, and the vertical lifting part top is fixed on described hang On frame;The two ends of top plate are provided with two holes for hoist passed through respectively for vertical lifting part in each RC T-beam; The lower joist is divided into the joist sections that M is laid from left to right, the structure snd size all same of the M joist sections, often The web bottom of the individual RC T-beam is provided with a joist section, and the joist section edge need to remove beam Laid in the transverse width direction of section;The fixed peace in the bottom of two vertical lifting parts in vertical lifting part described in every group On the same joist section;

Step 4: lifting and removing:Current constructed beam section level is lifted upwards using the Bridge Erector, and will be current Constructed beam section is moved on the outside of two support piers;

Step 5: beam section is installed after changing:Beam section after replacing is lifted using Lift-on/Lift-off System described in step 3, and The rear and front end of beam section after the replacing is set to be respectively supported in step 4 on two support piers;

Beam section is the beam section changed to current construction beam section after the replacing;Using the Lift-on/Lift-off System to described When beam section is lifted after replacing, two suspension brackets are laid in above the rear and front end of beam section after the replacing respectively, two The lower joist is respectively supported at the rear and front end bottom of beam section after the replacing;The rear and front end of beam section is opened after the replacing There are the 2M vertical through holes passed through respectively for vertical lifting part;

Step 6: next beam section whole group is removed and installation:It is right according to step one to the method described in step 5 The next beam section that need to remove for removing old beam carries out whole group dismounting and installation;

Step 7: one or many repeat steps six, until completing to remove all in old beam need to remove the whole group of beam section Remove and installation process.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Bridge Erector described in step 3 For double guide beam bridge erecting machine;The front and rear supporting leg of the Bridge Erector is respectively supported at two support piers of current beam section of constructing On.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Beam section branch is carried out in step 2 Before top, first lower people is respectively cut on one in the rear and front end of each RC T-beam in current beam section of constructing Hole;When carrying out beam section support top in step 2, by cutting the upper servant hole completed below the current beam section of constructing before and after two One group of vertical branch ejection device is laid on the individual support pier respectively;

Each vertical branch ejection device includes the two vertical jack in left and right, and two vertical jack are symmetrically propped up Support in the web left and right sides of a RC T-beam, support top is distinguished in steel in the top of two vertical jack Below the top plate left and right sides of reinforced concrete T beams.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Beam section branch is carried out in step 2 Before top, also need to set up a newly-increased beam section respectively in the left and right sides of current beam section of constructing using the Bridge Erector, and make The rear and front end of the newly-increased beam section is respectively supported on two support piers of current beam section of constructing;

When being lifted and removed in step 4, using the Lift-on/Lift-off System by current constructed beam section along vertical bridge to moving to The need do not removed in now removed old beam are removed in beam section, or along direction across bridge current constructed beam section is moved into the newly-increased beam Duan Shang.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Overhead traveling crane described in step 3 It is attached between suspender and the suspension bracket by bearing pin;Each suspension bracket and between beam section need to be removed pad equipped with M institute Backing plate is stated, a backing plate is provided with directly over each joist section, left and right two is provided with each backing plate The through hole passed through respectively for vertical lifting part.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Suspension bracket described in step 3 by Three lifting frames laid from bottom to up are assembled, the structure all same of three lifting frames and three is laid in On same vertical plane;The I-steel that each lifting frame is laid in same level side by side by twice is assembled, The structure snd size all same of I-steel described in twice and the two in it is parallel lay, I-steel described in twice be respectively outside I-shaped Steel and the inner side I-steel on the inside of the outside I-steel;Three lifting frames are in horizontal layout, described in three Lifting frame is respectively bottom support body, middle part support body and top support body from bottom to up, and the length of the bottom support body is more than middle part The length of support body, the length of the middle part support body is more than the length of top support body, and the middle part support body and top support body are respectively positioned on The surface of bottom support body;

The middle part support body be divided into the middle part support body section immediately below the support body of top and two be located at respectively it is described in The sidepiece support body section of the portion support body section left and right sides;Between the top support body and the middle part support body section and bottom support body It is fastenedly connected by multigroup middle part spiral laid from left to right, middle part spiral includes two described in every group In the middle part spiral symmetrically laid, two middle part spirals are respectively middle part outside screw reinforcing bar and positioned at described Inside middle portion spiral on the inside of the outside screw reinforcing bar of middle part, the top support body and the middle part support body section and lower cage It is fastenedly connected between the outside I-steel in body by the middle part outside screw reinforcing bar, the top support body and institute Carried out tightly by the inside middle portion spiral between the inner side I-steel in the middle part of stating in support body section and bottom support body It is solidly connected;Opened on the upper lower wing plate of the top support body, the middle part support body section and the I-steel in the support body of bottom There is the through hole passed through for middle part spiral;The middle part spiral is in vertical to laying;

Each pass through multigroup side thread reinforcing bar laid from left to right between the sidepiece support body section and bottom support body It is fastenedly connected, side thread reinforcing bar described in every group includes two in the side thread reinforcing bar symmetrically laid, described in two Side thread reinforcing bar is respectively sidepiece outside screw reinforcing bar and the sidepiece inner side spiral shell on the inside of the sidepiece outside screw reinforcing bar Pass through the sidepiece outside screw steel between the outside I-steel in line reinforcing bar, the sidepiece support body section and bottom support body Muscle is fastenedly connected, by the sidepiece between the inner side I-steel in the sidepiece support body section and bottom support body Side spiral is fastenedly connected;On the upper lower wing plate of the I-steel in the sidepiece support body section and bottom support body It is provided with the through hole passed through for side thread reinforcing bar;The side thread reinforcing bar is in vertical to laying.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Each middle part screw-thread steel The left and right sides of muscle is provided with one of middle part ribbed stiffener, and middle part ribbed stiffener described in twice is in symmetrical laying and the two is in vertical To laying;The top support body, the middle part support body section and bottom support body middle position are in work described in the same roads of vertical plane Shang tri- It is fastenedly connected and is integrated by the middle part ribbed stiffener between word steel;

The left and right sides of each side thread reinforcing bar is provided with one of sidepiece ribbed stiffener, and sidepiece described in twice is put more energy into Rib is in symmetrical laying and the two is in vertical to laying;The sidepiece support body section and bottom support body middle position is on same vertical plane Twice described in be fastenedly connected between I-steel and be integrated by the sidepiece ribbed stiffener.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:The top support body top is set Multiple upper junction steel plates are equipped with, the quantity of the upper junction steel plate is identical with the group number of middle part spiral, multiple upper companies Installation position of the installation position of steel plate respectively with middle part spiral is connect to correspond;The upper junction steel plate is strip steel Plate and its two ends is respectively welded and is fixed in the support body of top described in twice on the upper flange of I-steel, the upper junction steel plate it is interior Outer both sides are provided with a mounting hole installed for middle part spiral;

The middle part support body top is provided with multiple middle junction steel plates, the quantity and middle part support body of the middle junction steel plate The group number of filled side thread reinforcing bar is identical, the installation positions of multiple middle junction steel plates respectively with institute on the middle part support body The installation position for filling side thread reinforcing bar is corresponded;The middle junction steel plate is elongate steel plate and its two ends is respectively welded admittedly One is provided with support body on the upper flange of I-steel, inside and outside the middle junction steel plate described in twice supply side in the middle part of being scheduled on The mounting hole that portion's spiral is installed;

The bottom support body bottom is provided with multiple lower junction steel plates, the quantity and bottom support body of the lower junction steel plate Spiral is identical with the group number sum of side thread reinforcing bar in the middle part of filling, the installation position difference of multiple lower junction steel plates Installation position one-to-one corresponding with filling middle part spiral and side thread reinforcing bar on the bottom support body;The lower connection steel Plate is that elongate steel plate and its two ends are respectively welded and are fixed in the support body of bottom described in twice on the lower wing plate of I-steel, it is described under One is provided with inside and outside junction steel plate for middle part spiral or the mounting hole of side thread reinforcement installation;

The upper end of the middle part spiral and side thread reinforcing bar is respectively arranged with upper limit nut, the middle part spiral On the upper limit nut that is filled be installed in above junction steel plate, the upper limit nut that the side thread reinforcing bar is filled is installed in Above middle junction steel plate;

The lower end of the middle part spiral and side thread reinforcing bar is respectively arranged with lower position nut, the middle part spiral Stop nut is held with side thread reinforcing bar to be installed in below lower junction steel plate;

The upper limit nut and lower junction steel plate are in horizontal layout.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:The two neighboring reinforcing bar is mixed It is attached between solidifying soil T beams by wet seam;The top plate bottom of the M RC T-beams is provided with multiple tracks diaphragm plate, Diaphragm plate described in multiple tracks is laid from front to back along the longitudinal length that need to remove beam section, and multiple diaphragm plates edge needs to remove Laid in the transverse width direction of beam section;Front end hole for hoist group, position are constituted positioned at all holes for hoist that need to remove beam section front end Rear end hole for hoist group, the front end hole for hoist group and the rear end hole for hoist are constituted in all holes for hoist that need to remove beam section rear end Group is in symmetrical laying.

Removed and construction method of installation across both wired bridge whole groups on above-mentioned, it is characterized in that:Vertical lifting described in step 3 Piece installing is fining twisted steel, and the fining twisted steel bottom is provided with bottom stop nut, and the bottom stop nut is in level Lay and it is installed in below joist section, left and right two is provided with each joist section and is worn respectively for vertical lifting part The through hole crossed.

The present invention has advantages below compared with prior art:

1st, construction method step is simple, reasonable in design and easy construction, and input construction cost is relatively low.

2nd, using effect is good, and, security risk minimum to existing railway Influence to operation is minimum, quality of finished bridge is most guaranteed, and And the wasting of resources can be avoided to greatest extent, reduce construction cost.Meanwhile, railway skylight main points are few, and construction speed is fast and constructs Cycle is short, and the plant equipment used is few, thus administration fee and mechanical Meteorological can be greatly reduced.

3rd, the Lift-on/Lift-off System used is simple in construction and processing and fabricating is easy, and input cost is relatively low.

4th, the Lift-on/Lift-off System reasonable in design used, including Bridge Erector, former and later two are laid in respectively need to remove beam Suspension bracket above section rear and front end is respectively supported at former and later two need to remove the lower joist of beam section rear and front end bottom, each hang A lower joist is provided with immediately below frame;Multigroup vertical lifting is installed from left to right on each suspension bracket Part, the both sides up and down of beam section need to be removed by being fastened and fixed to suspension bracket and lower joist by multigroup vertical lifting part.Using Bridge Erector It is engaged and is lifted with two suspension brackets.

5th, the hanger structure used is simple and processing and fabricating is easy, and input cost is relatively low, and reasonable in design, steady Gu and bearing capacity is strong, the structure all same of three lifting frame assembled by three lifting frames laid from bottom to up And three is laid on same vertical plane;Each lifting frame is laid in the I-steel in same level by twice side by side It is assembled, and between three lifting frames by multigroup middle part spiral and multigroup side thread reinforcing bar be fastenedly connected for One, good integrity, connection is reliable.Meanwhile, the suspension bracket used uses easy to operate, using effect easy to connect with suspender Good and practical value is high, and length is more smaller than the transverse width that need to remove beam section, and practice of construction is easy, the beam section that can be removed to whole group Integral hoisting is carried out, hoisting process is steady, and different in width can be met that the whole group lifting demand of beam section need to be removed.

6th, the vertical lifting package structure used is simple, reasonable in design and processing and fabricating is easy, using effect is good, puts into This is relatively low, and the vertical lifting part is using fining twisted steel (also referred to as finish rolling deformed bar), and energy is easy, quickly realize suspension bracket and subiculum Being fastenedly connected between beam, the both sides up and down of beam section need to be removed by suspension bracket is fastened and fixed to lower joist, with to that need to remove beam section Carry out fastening clamp, it is ensured that hoisting process is steady.

7th, the Lift-on/Lift-off System using effect used is good and practical value is high, and the beam section that can be removed to whole group carries out overall hang Dress, hoisting process is steady, safety, and bearing capacity can meet the lifting demand that whole group removes beam section.Meanwhile, entered using Bridge Erector Row lifting, easy, quick can carry out direction across bridge and vertical bridge to translation to that need to remove beam section.

8th, using effect is good and practical value is high, across busy existing railway line bridge construction vertical skylight point main points on Many, the vertical skylight point time it is short and can not continuously to point, working procedure intersect it is many, organize and coordinate difficulty is big, security risk is high etc. Feature, is removed and installation and Lift-on/Lift-off System is designed by whole group, using can on it is big across both wired bridge single groups Tonnage, large volume component carry out Lift-on/Lift-off System of the whole group dismounting with installing and constructed, and can effectively improve efficiency of construction, shortening is applied In the work cycle, construction cost is reduced, and work progress is safe and reliable, and construction risk is very small, and economic benefit and social benefit are aobvious Write.

In summary, the inventive method step is simple, reasonable in design and easy construction, using effect are good, can be easy, quick Whole group in completion across both wired bridges is removed and installation process, and work progress is safe and reliable, short construction period, It is economical and practical.

Below by drawings and examples, technical scheme is described in further detail.

Brief description of the drawings

Fig. 1 is method flow block diagram of the invention.

Fig. 1-1 is lifting view of the invention.

Fig. 1-2 is the installation position schematic diagram of two suspension brackets of the invention and two lower joists.

Fig. 2 is suspension bracket of the present invention, lower joist and need to remove the installation position schematic diagram of beam section.

Fig. 2-1 is the structural representation of suspension bracket of the present invention.

Fig. 2-2 is the side portion structure schematic diagram of suspension bracket of the present invention.

Fig. 3 by the present invention lifting need to remove the structural representation of beam section.

Description of reference numerals:

1-bottom support body;2-middle part support body;3-top support body;

4-middle part spiral;5-side thread reinforcing bar;6-middle part ribbed stiffener;

7-sidepiece ribbed stiffener;8-go up junction steel plate;9-middle junction steel plate;

10-lower junction steel plate;11-upper limit nut;12-lower position nut;

13-pin-and-hole;14-beam section need to be removed;15-RC T-beam;

16-vertical lifting part;17-hole for hoist;18-joist section;

19-bottom stop nut;20-wet seam;21-diaphragm plate;

22-upper fixed seat;23-middle fixed seat;24-lower fixed seat;

25-upper limit nut;26-backing plate;27-Bridge Erector;

28-bearing pin;29-go up servant hole.

Embodiment

Removed and construction method of installation across both wired bridge whole groups in one kind as shown in Figure 1, from front to back to being removed Multiple beam sections 14 that need to remove of old beam carry out whole group dismounting and installation respectively, and multiple whole groups that need to remove beam section 14 are torn open Except with construction method of installation all same;It is the bridge main beam across existing railway line to remove old beam, removes old beam by multiple It is described to remove that beam section 14 is assembled from front to back, multiple structure all sames that need to remove beam section 14 and it is reinforcing bar Concrete Beam Segment, the beam section 14 that need to remove is assemblied to form from left to right by M RC T-beam 15, and wherein M is positive integer And M >=3;The rear and front end that beam section 14 need to be removed is respectively supported on a support pier, described to remove in beam section 14 It is equipped with bridge deck pavement;When carrying out whole group dismounting with installation to beam section 14 need to be removed any one described, including following step Suddenly:

Step 1: bridge deck pavement milling:Milling is carried out to the current bridge deck pavement constructed in beam section;

Current the constructed beam section removes beam section 14 for the current need for carrying out whole group dismounting and installation;

Step 2: beam section support top:One is laid respectively on former and later two described support piers below current beam section of constructing The vertical branch ejection device of group, vertical branch ejection device described in every group includes M and is laid in same vertical plane from left to right along direction across bridge On the vertical branch ejection device, the rear and front end bottom of each RC T-beam 15 be provided with one it is described perpendicular To branch ejection device;Made current synchronously by the current upward support top of beam section level of constructing by vertical branch ejection device described in two groups again Constructed beam section is separated with two support piers;

Step 3: preparation before lifting:A suspension bracket is laid respectively above the rear and front end of current beam section of constructing, And lay a lower joist respectively in the underface of two suspension brackets, two lower joists are respectively supported at and currently constructed The rear and front end bottom of beam section;Two suspension brackets are lifted on to the Bridge Erector 27 being set up in advance on removed old beam respectively again Former and later two overhead traveling cranes immediately below, the Bridge Erector 27, two suspension brackets and two lower joists composition Lift-on/Lift-off Systems, in detail See Fig. 1-1, Fig. 1-2, Fig. 2, Fig. 2-1 and Fig. 2-2;

Two suspension brackets and two lower joists are laid along the transverse width direction of current constructed beam section, Two suspension brackets are in symmetrical laying, and two lower joists are in symmetrical laying;Installed from left to right on each suspension bracket There are the vertical lifting part 16 that M groups are lifted to the M RC T-beams 15 respectively, multigroup vertical lifting part 16 It is laid on same vertical plane;Vertical lifting part 16 described in every group includes the two vertical lifting parts 16 in left and right, two The vertical lifting part 16 is located at the web left and right sides for lifting RC T-beam 15, the vertical lifting part 16 respectively Top is fixed on the suspension bracket;The two ends of top plate are provided with two respectively for vertical in each RC T-beam 15 The hole for hoist 17 that lifting part 16 is passed through, as shown in Figure 3;The lower joist is divided into the M joist sections 18, M laid from left to right The structure snd size all same of the individual joist section 18, the web bottom of each RC T-beam 15 is provided with One joist section 18, the joist section 18 is laid along the transverse width direction that need to remove beam section 14;Every group of institute The bottom for stating two vertical lifting parts 16 in vertical lifting part 16 is fixedly mounted on the same joist section 18;

Step 4: lifting and removing:Current constructed beam section level is lifted upwards using the Bridge Erector 27, and ought Preceding constructed beam section is moved on the outside of two support piers;

Step 5: beam section is installed after changing:Beam section after replacing is lifted using Lift-on/Lift-off System described in step 3, and The rear and front end of beam section after the replacing is set to be respectively supported in step 4 on two support piers;

Beam section is the beam section changed to current construction beam section after the replacing;Using the Lift-on/Lift-off System to described When beam section is lifted after replacing, two suspension brackets are laid in above the rear and front end of beam section after the replacing respectively, two The lower joist is respectively supported at the rear and front end bottom of beam section after the replacing;The rear and front end of beam section is opened after the replacing There are the 2M vertical through holes passed through respectively for vertical lifting part 16;

Step 6: next beam section whole group is removed and installation:It is right according to step one to the method described in step 5 The next beam section 14 that need to remove for removing old beam carries out whole group dismounting and installation;

Step 7: one or many repeat steps six, until completing to remove all in old beam need to remove the whole of beam section 14 Assembling and dismantling are removed and installation process.

In the present embodiment, Bridge Erector 27 described in step 3 is double guide beam bridge erecting machine.

When actual use, the Bridge Erector 27 can also use other types of conventional Bridge Erector.27 pairs of the Bridge Erector The hanging device of the carry out level lifting of beam section 14 need to be removed, two suspension brackets are lifted on former and later two days of Bridge Erector 27 respectively The underface of car.

In the present embodiment, the front and rear supporting leg of the Bridge Erector 27 is respectively supported at two branch of current beam section of constructing Support on pier.

As shown in figure 3, before beam section support top is carried out in step 2, first each reinforcing bar is mixed in current beam section of constructing A upper servant hole 29 is respectively cut in the rear and front end of solidifying soil T beams 15;When carrying out beam section support top in step 2, completed by cutting Upper servant hole 29 lay one group of vertical support top respectively on former and later two described support piers below current beam section of constructing and fill Put;

Each vertical branch ejection device includes the two vertical jack in left and right, and two vertical jack are symmetrically propped up Support in the web left and right sides of a RC T-beam 15, the top difference support top of two vertical jack exists Below the top plate left and right sides of RC T-beam 15.

Wherein, the upper servant hole 29 is for the manhole above and below workmen.The RC T-beam 15 is also referred to as steel The T-shaped beam of reinforced concrete, T-shaped beam refers to cross-sectional form for T-shaped beam.In the present embodiment, the joist section 18 is I-steel.

Carried out in the present embodiment, in step 2 before beam section support top, also need to be constructed currently using the Bridge Erector 27 The left and right sides of beam section sets up a newly-increased beam section respectively, and the rear and front end of the newly-increased beam section is respectively supported at current institute On two support piers of beam section of constructing;

When being lifted and removed in step 4, using the Lift-on/Lift-off System by current constructed beam section along vertical bridge to moving to The need do not removed in now removed old beam are removed in beam section 14, or along direction across bridge current construct beam section is moved into described increase newly In beam section.

In the present embodiment, it is attached between the suspender of overhead traveling crane described in step 3 and the suspension bracket by bearing pin 28;Often The individual suspension bracket and pad need to be removed between beam section 14 equipped with the M backing plates 26, the surface of each joist section 18 A backing plate 26 is provided with, left and right two is provided with each backing plate 26 respectively for leading to that vertical lifting part 16 is passed through Hole.

In the present embodiment, the backing plate 26 is the rubber mat plate in horizontal layout.

In the present embodiment, suspension bracket described in step 3 is assembled by three lifting frames laid from bottom to up, three The structure all same of the lifting frame and three is laid on same vertical plane;Each lifting frame by twice simultaneously The I-steel that is located in same level of arranging is assembled, the structure snd size all same of I-steel described in twice and the two be in Parallel to lay, I-steel described in twice is respectively outside I-steel and the inner side I-steel on the inside of the outside I-steel; Three lifting frames are in horizontal layout, and three lifting frames are respectively bottom support body 1, middle part support body from bottom to up 2 and top support body 3, the length of the bottom support body 1 is more than the length of middle part support body 2, and the length of the middle part support body 2 is more than upper The length of portion's support body 3, the middle part support body 2 and top support body 3 are respectively positioned on the surface of bottom support body 1;

2 points of the middle part support body is respectively positioned at described positioned at the middle part support body section of the underface of top support body 3 and two The sidepiece support body section of the middle part support body section left and right sides;The top support body 3 and the middle part support body section and bottom support body 1 Between be fastenedly connected by multigroup middle part spiral 4 laid from left to right, described in every group middle part spiral 4 wrap Two are included in the middle part spiral 4 symmetrically laid, two middle part spirals 4 be respectively middle part outside screw reinforcing bar and Inside middle portion spiral on the inside of the middle part outside screw reinforcing bar, the top support body 3 and the middle part support body section It is fastenedly connected between the outside I-steel in section and bottom support body 1 by the middle part outside screw reinforcing bar, it is described Pass through the inside middle portion between the inner side I-steel in top support body 3 and the middle part support body section and bottom support body 1 Spiral is fastenedly connected;The I-steel in the top support body 3, the middle part support body section and bottom support body 1 Upper lower wing plate on be provided with the through hole passed through for middle part spiral 4;The middle part spiral 4 is in vertical to laying;

Each pass through multigroup side thread steel laid from left to right between the sidepiece support body section and bottom support body 1 Muscle 5 is fastenedly connected, and side thread reinforcing bar 5 described in every group includes two in the side thread reinforcing bar 5 symmetrically laid, two The side thread reinforcing bar 5 is respectively sidepiece outside screw reinforcing bar and in the sidepiece on the inside of the sidepiece outside screw reinforcing bar By on the outside of the sidepiece between the outside I-steel in side spiral, the sidepiece support body section and bottom support body 1 Spiral is fastenedly connected, and institute is passed through between the inner side I-steel in the sidepiece support body section and bottom support body 1 Sidepiece inside thread reinforcing bar is stated to be fastenedly connected;The I-steel in the sidepiece support body section and bottom support body 1 it is upper The through hole passed through for side thread reinforcing bar 5 is provided with lower wing plate;The side thread reinforcing bar 5 is in vertical to laying.

In the present embodiment, the left and right sides of each middle part spiral 4 is provided with one of middle part ribbed stiffener 6, two Middle part ribbed stiffener 6 described in road is in symmetrical laying and the two is in vertical to laying;The top support body 3, the middle part support body section It is located in section and bottom support body 1 between I-steel described in the same roads of vertical plane Shang tri- by the middle part ribbed stiffener 6 fastening company It is connected in one;

The left and right sides of each side thread reinforcing bar 5 is provided with one of sidepiece ribbed stiffener 7, and sidepiece described in twice adds Strength rib 7 is in symmetrical laying and the two is in vertical to laying;It is same vertical to be located in the sidepiece support body section and bottom support body 1 It is fastenedly connected and is integrated by the sidepiece ribbed stiffener 7 between I-steel described in twice on face.

During actual processing, the middle part ribbed stiffener 6 and sidepiece ribbed stiffener 7 be elongate steel plate and the two and I-steel it Between be fixedly connected with welding manner.

In the present embodiment, the top of top support body 3 is provided with multiple upper junction steel plates 8, the number of the upper junction steel plate 8 Amount is identical with the group number of middle part spiral 4, the installation positions of multiple upper junction steel plates 8 respectively with middle part spiral 4 Installation position correspond;The upper junction steel plate 8 is elongate steel plate and its two ends is respectively welded and is fixed on top support body 3 Described in middle twice on the upper flange of I-steel, one is provided with inside and outside the upper junction steel plate 8 and supplies middle part spiral 4 The mounting hole of installation;

The top of middle part support body 2 is provided with multiple middle junction steel plates 9, quantity and the middle part frame of the middle junction steel plate 9 The group number that side thread reinforcing bar 5 is filled on body 2 is identical, the installation positions of multiple middle junction steel plates 9 respectively with the middle part The installation position that side thread reinforcing bar 5 is filled on support body 2 is corresponded;The middle junction steel plate 9 be elongate steel plate and its two End, which is respectively welded, to be fixed in the support body 2 of middle part described in twice on the upper flange of I-steel, inside and outside the middle junction steel plate 9 It is provided with a mounting hole installed for side thread reinforcing bar 5;

The bottom of bottom support body 1 is provided with multiple lower junction steel plates 10, the quantity of the lower junction steel plate 10 and bottom Middle part spiral 4 is filled on support body 1 identical with the group number sum of side thread reinforcing bar 5, multiple lower junction steel plates 10 Installation position is respectively with filling a pair of the installation position 1 of middle part spiral 4 and side thread reinforcing bar 5 on the bottom support body 1 Should;The lower junction steel plate 10 is elongate steel plate and its two ends is respectively welded and is fixed in bottom support body 1 I-shaped described in twice On the lower wing plate of steel, one is provided with inside and outside the lower junction steel plate 10 and supplies middle part spiral 4 or side thread steel The mounting hole that muscle 5 is installed.

Also, the upper junction steel plate 8, middle junction steel plate 9 and lower junction steel plate 10 in horizontal layout and three with The I-steel is perpendicular to be laid.

In the present embodiment, the upper end of the middle part spiral 4 and side thread reinforcing bar 5 is respectively arranged with upper limit nut 11, The upper limit nut 11 filled on the middle part spiral 4 is installed in the top of junction steel plate 8, the side thread reinforcing bar 5 The upper limit nut 11 filled is installed in the middle top of junction steel plate 9;

The lower end of the middle part spiral 4 and side thread reinforcing bar 5 is respectively arranged with lower position nut 12, the middle part screw thread Reinforcing bar 4 and side thread reinforcing bar 5 hold stop nut 12 and are installed in the lower lower section of junction steel plate 10;

The upper limit nut 11 and lower junction steel plate 10 are in horizontal layout.

In the present embodiment, the middle part of the top support body 3 is provided with the pin-and-hole 13 of supply and marketing axle installation.

In the present embodiment, all middle part spirals 4 on the left of the middle part of top support body 3 constitute left portion's screw thread Reinforcing bar group, all middle part spirals 4 composition right middle spiral group on the right side of the middle part of top support body 3 is described Left portion's spiral group and the right middle spiral group are in symmetrical laying;

The multigroup composition of side thread reinforcing bar 5 left side spiral group positioned at the left side of top support body 3, positioned at top The multigroup composition of side thread reinforcing bar 5 right side spiral group on the right side of support body 3, the left side spiral group and institute Right side spiral group is stated in symmetrical laying.

In the present embodiment, the group number of the middle part spiral 4 is to fill side thread steel on 4 groups, the middle part support body 2 The group number of muscle 5 is 4 groups.

During actual processing, the group number of middle part spiral 4 and side thread reinforcing bar 5 can be entered respectively according to specific needs The corresponding adjustment of row.

In the present embodiment, as shown in figure 3, being carried out between the two neighboring RC T-beam 15 by wet seam 20 Connection;The top plate bottom of M RC T-beams 15 is provided with multiple tracks diaphragm plate 21, and diaphragm plate 21 described in multiple tracks is along needing The longitudinal length for removing beam section 14 is laid from front to back, and multiple diaphragm plates 21 edge need to remove the laterally wide of beam section 14 Laid in degree direction;Positioned at need to remove the front end of beam section 14 all holes for hoist 17 constitute front end hole for hoist group, positioned at need remove The composition rear end hole for hoist group of all holes for hoist 17 of the rear end of beam section 14, the front end hole for hoist group and the rear end hole for hoist group are in It is symmetrical to lay.

Also, it is front side diaphragm plate, multiple tabulas to be located at the diaphragm plate 21 of most front side in multiple diaphragm plates 21 Diaphragm plate 21 in plate 21 positioned at last side is rear side diaphragm plate, and the front end hole for hoist group is located at before the front side diaphragm plate Side, the rear end hole for hoist group is located at the rear side of the rear side diaphragm plate.

In the present embodiment, vertical lifting part 16 described in step 3 is fining twisted steel (i.e. finish rolling deformed bar), described Fining twisted steel bottom is provided with bottom stop nut 19, and the bottom stop nut 19 is in horizontal layout and it is installed in joist The through hole that left and right two is passed through for vertical lifting part 16 respectively is provided with the lower section of section 18, each joist section 18.

In the present embodiment, described M=5.

When actual use, M value size can be carried out according to the quantity that need to remove RC T-beam 15 in beam section 14 Corresponding adjustment.

In the present embodiment, vertical lifting part 16 described in 5 groups be respectively one group of first vertical lifting part, two groups symmetrically lay The 3rd vertical lifting part that second vertical lifting part and two groups are symmetrically laid, the first vertical lifting part described in one group is located at described hang In the middle part of frame, the second vertical lifting part is respectively positioned between the 3rd vertical lifting part described in two groups described in two groups.

The first vertical lifting part top is fixed on top support body 3, and the top of the top support body 3, which is provided with, supplies institute State to be provided with the upper fixed seat 22 that the first vertical lifting part is fixed, fixed seat 22 and passed through for the described first vertical lifting part Through hole;

The second vertical lifting part top is fixed on the support body 2 of middle part, and the top of the middle part support body 2, which is provided with, supplies institute State to be provided with the middle fixed seat 23 that the second vertical lifting part is fixed, the middle fixed seat 23 and passed through for the described second vertical lifting part Through hole;

The 3rd vertical lifting part top is fixed on bottom support body 1, and the top of the bottom support body 1, which is provided with, supplies institute State to be provided with the lower fixed seat 24 that the 3rd vertical lifting part is fixed, the lower fixed seat 24 and passed through for the 3rd vertical lifting part Through hole;

The upper end of the first vertical lifting part, the second vertical lifting part and the 3rd vertical lifting part is respectively arranged with The upper limit nut 25 filled on upper limit nut 25, the first vertical lifting part is installed on the top of upper fixed seat 22, The upper limit nut 25 filled on the second vertical lifting part is installed on the middle top of fixed seat 23, the described 3rd vertical lifting The upper limit nut 25 filled on part is installed on the top of lower fixed seat 24.

In the present embodiment, the length that need to remove beam section 14 is 17.2m, width 10.9m, height 1.3m and its deadweight is In 138t, step one after the completion of bridge deck pavement milling, and after the completion of upper servant hole 29 is opened up, the beam section 14 that need to remove Weight reduction, total load head is controlled within 130t.Used Bridge Erector 27 is that peak " is stepped on by Jiangsu Province Nanjing Deng Feng hoisting machineries factory Board " double guide beam bridge erecting machine, rated load weight 150t and its largest span 40m.The Bridge Erector 27 can meet the replacing simultaneously Load requirements of beam section and newly-increased beam section afterwards.

In the present embodiment, the length of suspension bracket middle and lower part support body 1 is 10.6m, and the length of middle part support body 2 is 5.6m, on The length of portion's support body 3 is 2.2m, and the bottom support body 1, middle part support body 2 and top support body 3 are using 2 I40 I-steel.

Connected in the bottom support body 1, middle part support body 2 and top support body 3 between I-steel described in twice using batten plate, Neighbouring two lifting frames use full weld, then are vertically mechanically connected with a diameter of Φ 25mm fining twisted steel It is integral.Connected between the suspender of the suspension bracket and Bridge Erector 27 using steel pin (i.e. bearing pin 28).When actual use, the joist Section 18 can also use two, and [the double back of the body full welds of 20B channel-section steels are formed, and the length of the joist section 18 is 50cm.It is actual to carry out During lifting, vertically connect integral by five groups of fining twisted steels between five joist sections 18 and the suspension bracket.Five groups Fining twisted steel is tightened using double nut (also referred to as double nut), it is ensured that uniform force.

In the present embodiment, a newly-increased beam section is set up using Bridge Erector 27 respectively in the left and right sides of current beam section of constructing When, the newly-increased beam section is 30m box beams, wherein left 13, right 14, the newly-increased beam section is that whole group removes displacement creation Advantage.

In the present embodiment, bridge deck pavement upper berth described in step one is equipped with supercrust, step one and carries out deck paving It is artificial that milling is carried out using milling equipment respectively to the supercrust and the bridge deck pavement during layer milling.Also, milling is applied Work is carried out outside at " skylight point ".During practice of construction, first the supercrust and the bridge deck pavement are carried out with road cutting machine Cutting, then removed using small-sized hydraulic disintegrating machine and pneumatic pick, manually concrete breaking block and waste residue material are collected, removed, is loaded Trolley is transported to outside bridge floor, then concentrates loading dump truck outward transport to throw aside with loading machine.

After the bridge deck pavement is cut, first led to the line of ink marker region sideline bullet is removed, cut using diamond blade saw Cut the upper servant hole 29 of beam-ends.After servant hole 29 is cut in completion, the flange plate for having cut people's cavity portion is hung using truck crane It is transported to and throws aside outside the venue.The manufactured suspension bracket is seated to by precalculated position by upper servant hole 29 again, then by operative Flat formula jack is to bearing pad stone front end, using the flat formula jack of beam-ends synchronously by current beam section jack-up of constructing, and releasing ought The block constraint of preceding constructed beam section both sides.Then, hole for hoist 17, bore diameter are opened up in T Liang Yibanchu using corning machine 100mm, hole position is away from beam-ends 1m, web two side holes column pitch 0.5m.

Also, before carrying out beam section support top in step 2, also need that beam section 14 will be removed with adjacent need and carry out cutting and separate, And separate current constructed beam section 14 with the support pier progress cutting supported below.

Beam section level current will construct upwards before lifting using the Bridge Erector 27 in step 4, it is first first hang tight described in Suspension bracket, and make two equal uniform forces of suspension bracket.Two overhead traveling cranes of the Bridge Erector 27 are synchronously slowly at the uniform velocity lifted, and treat that bottom is horizontal When 20cm or so above existing bridge floor is arrived in the lifting of load bottom, the pause of Bridge Erector 27 is lifted 1 minute, then 27 pairs of traversing Bridge Erector is hung Dress beam section is placed.

After current constructed beam section is moved on the outside of two support piers in step 4, also need to current beam section of constructing Carry out broken and transported using carrier loader.

When beam section is installed after being changed in step 5, coordinate beam section after artificial changed using two 80t truck cranes Installation, changes when removing, makes old bridge removal and new erection successively alternately.Before beam section is installed after the replacing, Enough erection space site locations are must assure that, first beam section after replacing can be temporarily stored in and complete the newly-increased of erection On the old beam do not removed in beam section or.

During practice of construction, in " hang down and stop skylight point ", whole group dismounting and installation are carried out several times, until completing All whole groups that need to remove beam section 14 in old beam are removed to remove and installation process.Meanwhile, matched somebody with somebody using two 80t truck cranes Lifting displacement is closed, then will need to remove the whole group of beam section 14 and is transferred to nearby on the roadbed beyond bridge location, takes mechanical dissection to disintegrate, enters The broken outward transport of row is thrown aside.

It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (10)

1. removed and construction method of installation across both wired bridge whole groups in one kind, it is characterised in that:From front to back to removed old Multiple beam sections (14) that need to remove of beam carry out whole group dismounting and installation respectively, multiple described to remove the whole group of beam section (14) Remove and construction method of installation all same;It is the bridge main beam across existing railway line to remove old beam, removes old beam by many It is individual it is described need to remove that beam section (14) is assembled from front to back, multiple structure all sames that need to remove beam section (14) and its is equal For armored concrete beam section, the beam section (14) that need to remove is assemblied to form from left to right by M RC T-beam (15), its Middle M is positive integer and M >=3;The rear and front end that beam section (14) need to be removed is respectively supported on a support pier, described to tear open Except being equipped with bridge deck pavement in beam section (14);Applied to beam section (14) progress whole group dismounting need to be removed any one described with installation In man-hour, comprise the following steps:
Step 1: bridge deck pavement milling:Milling is carried out to the current bridge deck pavement constructed in beam section;
Current the constructed beam section removes beam section (14) for the current need for carrying out whole group dismounting and installation;
Step 2: beam section support top:One group is laid respectively on former and later two described support piers below current beam section of constructing to erect To branch ejection device, vertical branch ejection device described in every group includes M and is laid in from left to right on same vertical plane along direction across bridge The vertical branch ejection device, the rear and front end bottom of each RC T-beam (15) be provided with one it is described vertical Branch ejection device;Current institute is made synchronously by the current upward support top of beam section level of constructing by vertical branch ejection device described in two groups again Beam section of constructing is separated with two support piers;
Step 3: preparation before lifting:Lay a suspension bracket respectively above the rear and front end of current beam section of constructing, and A lower joist is laid in the underface of two suspension brackets respectively, and two lower joists are respectively supported at current beam section of constructing Rear and front end bottom;Two suspension brackets are lifted on the advance Bridge Erector (27) being set up on removed old beam respectively again Immediately below former and later two overhead traveling cranes, the Bridge Erector (27), two suspension brackets and two lower joist composition Lift-on/Lift-off Systems;
Two suspension brackets and two lower joists are laid along the transverse width direction of current constructed beam section, two The suspension bracket is in symmetrical laying, and two lower joists are in symmetrical laying;M groups are installed from left to right on each suspension bracket The vertical lifting part (16) that the M RC T-beams (15) are lifted respectively, multigroup vertical lifting part (16) It is laid on same vertical plane;Vertical lifting part (16) described in every group includes the two vertical lifting parts (16) in left and right, Two vertical lifting parts (16) are located at the web left and right sides for lifting RC T-beam (15) respectively, described vertical Lifting part (16) top is fixed on the suspension bracket;The two ends of top plate are provided with two in each RC T-beam (15) The individual hole for hoist (17) passed through respectively for vertical lifting part (16);The lower joist is divided into the M joist sections laid from left to right Section (18), the structure snd size all same of the M joist sections (18), the web of each RC T-beam (15) Bottom is provided with a joist section (18), and joist section (18) edge need to remove the transverse width side of beam section (14) To being laid;The bottom of two vertical lifting parts (16) is fixedly mounted on together in vertical lifting part (16) described in every group On one joist section (18);
Step 4: lifting and removing:Current constructed beam section level is lifted upwards using the Bridge Erector (27), and will be current Constructed beam section is moved on the outside of two support piers;
Step 5: beam section is installed after changing:Beam section after replacing is lifted using Lift-on/Lift-off System described in step 3, and makes institute The rear and front end for stating beam section after changing is respectively supported in step 4 on two support piers;
Beam section is the beam section changed to current construction beam section after the replacing;Changed using the Lift-on/Lift-off System to described When beam section is lifted afterwards, two suspension brackets are laid in above the rear and front end of beam section after the replacing respectively, described in two Lower joist is respectively supported at the rear and front end bottom of beam section after the replacing;The rear and front end of beam section is provided with 2M after the replacing The individual vertical through holes passed through respectively for vertical lifting part (16);
Step 6: next beam section whole group is removed and installation:According to step one to the method described in step 5, to being torn open Except next beam section (14) that need to remove of old beam carries out whole group dismounting and installation;
Step 7: one or many repeat steps six, until completing to remove all in old beam need to remove the whole group of beam section (14) Remove and installation process.
2. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1, it is characterised in that:Step Bridge Erector described in three (27) is double guide beam bridge erecting machine;The front and rear supporting leg of the Bridge Erector (27), which is respectively supported at, is currently constructed On two support piers of beam section.
3. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: In step 2 before progress beam section support top, first in current beam section of constructing before and after each RC T-beam (15) Two ends are respectively cut one upper servant hole (29);When carrying out beam section support top in step 2, by cutting the upper servant hole completed (29) one group of vertical branch ejection device is laid respectively on former and later two described support piers below current beam section of constructing;
Each vertical branch ejection device includes the two vertical jack in left and right, and two vertical jack are symmetrically supported in Support top is distinguished in steel in the web left and right sides of one RC T-beam (15), the top of two vertical jack Below the top plate left and right sides of reinforced concrete T beams (15).
4. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: Carried out in step 2 before beam section support top, also need the left and right sides difference in current beam section of constructing using the Bridge Erector (27) A newly-increased beam section is set up, and is respectively supported at the rear and front end of the newly-increased beam section and is currently constructed described in two of beam section On support pier;
When being lifted and removed in step 4, using the Lift-on/Lift-off System by current constructed beam section along vertical bridge to moving to now Remove the need do not removed in old beam to remove in beam section (14), or along direction across bridge current constructed beam section is moved into the newly-increased beam Duan Shang.
5. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: It is attached between the suspender of overhead traveling crane described in step 3 and the suspension bracket by bearing pin (28);Each suspension bracket is removed with needing Pad, equipped with the M backing plates (26), is each provided with one directly over the joist section (18) between beam section (14) The through hole that left and right two is passed through for vertical lifting part (16) respectively is provided with backing plate (26), each backing plate (26).
6. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: Suspension bracket described in step 3 is assembled by three lifting frames laid from bottom to up, and the structure of three lifting frames is equal Identical and three is laid on same vertical plane;Each lifting frame is laid in same level side by side by twice I-steel it is assembled, the structure snd size all same of I-steel described in twice and the two in it is parallel lay, work described in twice Word steel is respectively outside I-steel and the inner side I-steel on the inside of the outside I-steel;Three lifting frames are in Horizontal layout, three lifting frames from bottom to up be respectively bottom support body (1), middle part support body (2) and top support body (3), The length of the bottom support body (1) is more than the length of middle part support body (2), and the length of the middle part support body (2) is more than top support body (3) length, the middle part support body (2) and top support body (3) are respectively positioned on the surface of bottom support body (1);
The middle part support body (2) be divided into middle part support body section immediately below top support body (3) and two be located at respectively it is described The sidepiece support body section of the middle part support body section left and right sides;The top support body (3) and the middle part support body section and lower cage It is fastenedly connected between body (1) by multigroup middle part spiral (4) laid from left to right, middle part screw-thread steel described in every group Muscle (4) includes two in the middle part spiral (4) symmetrically laid, and two middle part spirals (4) are respectively middle part Outside screw reinforcing bar and the inside middle portion spiral on the inside of the middle part outside screw reinforcing bar, the top support body (3) Pass through the middle part outside screw reinforcing bar between the outside I-steel in the middle part support body section and bottom support body (1) It is fastenedly connected, the top support body (3) and the inner side I-steel in the middle part support body section and bottom support body (1) Between be fastenedly connected by the inside middle portion spiral;The top support body (3), the middle part support body section and under The through hole passed through for middle part spiral (4) is provided with the upper lower wing plate of the I-steel in portion's support body (1);The middle part Spiral (4) is in vertical to laying;
Each pass through multigroup side thread reinforcing bar laid from left to right between the sidepiece support body section and bottom support body (1) (5) it is fastenedly connected, side thread reinforcing bar (5) described in every group includes two in the side thread reinforcing bar (5) symmetrically laid, Two side thread reinforcing bars (5) are respectively sidepiece outside screw reinforcing bar and on the inside of the sidepiece outside screw reinforcing bar By described between the outside I-steel in sidepiece inside thread reinforcing bar, the sidepiece support body section and bottom support body (1) Sidepiece outside screw reinforcing bar is fastenedly connected, the sidepiece support body section and the inner side I-steel in bottom support body (1) Between be fastenedly connected by the sidepiece inside thread reinforcing bar;Institute in the sidepiece support body section and bottom support body (1) State the through hole for being provided with and being passed through for side thread reinforcing bar (5) on the upper lower wing plate of I-steel;The side thread reinforcing bar (5) is in perpendicular Directly to laying.
7. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 6, it is characterised in that:Each The left and right sides of the middle part spiral (4) is provided with one of middle part ribbed stiffener (6), middle part ribbed stiffener (6) described in twice In it is symmetrical lay and the two in vertical to laying;The top support body (3), the middle part support body section and bottom support body (1) In be located between I-steel described in the same roads of vertical plane Shang tri- and be fastenedly connected and be integrated by the middle part ribbed stiffener (6);
The left and right sides of each side thread reinforcing bar (5) is provided with one of sidepiece ribbed stiffener (7), and sidepiece described in twice adds Strength rib (7) is in symmetrical laying and the two is in vertical to laying;It is located in the sidepiece support body section and bottom support body (1) same It is fastenedly connected and is integrated by the sidepiece ribbed stiffener (7) between I-steel described in twice on vertical plane.
8. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 6, it is characterised in that:It is described Top support body (3) top is provided with multiple upper junction steel plates (8), quantity and the middle part spiral of the upper junction steel plate (8) (4) group number is identical, the installation position of the installation positions of multiple upper junction steel plates (8) respectively with middle part spiral (4) Correspond;The upper junction steel plate (8) is elongate steel plate and its two ends is respectively welded and is fixed on twice in top support body (3) On the upper flange of the I-steel, one is provided with inside and outside the upper junction steel plate (8) for middle part spiral (4) peace The mounting hole of dress;
Middle part support body (2) top is provided with multiple middle junction steel plates (9), the quantity of the middle junction steel plate (9) and middle part The group number that side thread reinforcing bar (5) is filled on support body (2) is identical, the installation positions of multiple middle junction steel plates (9) respectively with The installation position that side thread reinforcing bar (5) is filled on the middle part support body (2) is corresponded;The middle junction steel plate (9) is length Bar steel plate and its two ends, which are respectively welded, to be fixed in middle part support body (2) described in twice on the upper flange of I-steel, the middle company Connect and a mounting hole installed for side thread reinforcing bar (5) is provided with inside and outside steel plate (9);
Bottom support body (1) bottom is provided with multiple lower junction steel plates (10), and the quantity of the lower junction steel plate (10) is with Middle part spiral (4) is filled on portion's support body (1) identical with the group number sum of side thread reinforcing bar (5), multiple lower connections The installation position of steel plate (10) is respectively with filling middle part spiral (4) and side thread reinforcing bar (5) on the bottom support body (1) Installation position correspond;The lower junction steel plate (10) is elongate steel plate and its two ends is respectively welded and is fixed on lower cage One, which is provided with, in body (1) described in twice on the lower wing plate of I-steel, inside and outside the lower junction steel plate (10) supplies middle part The mounting hole that spiral (4) or side thread reinforcing bar (5) are installed;
The upper end of the middle part spiral (4) and side thread reinforcing bar (5) is respectively arranged with upper limit nut (11), the middle part spiral shell The upper limit nut (11) filled on line reinforcing bar (4) is installed in above junction steel plate (8), side thread reinforcing bar (5) institute The upper limit nut (11) of dress is installed in above middle junction steel plate (9);
The lower end of the middle part spiral (4) and side thread reinforcing bar (5) is respectively arranged with lower position nut (12), the middle part spiral shell Line reinforcing bar (4) and side thread reinforcing bar (5) hold stop nut (12) and are installed in below lower junction steel plate (10);
The upper limit nut (11) and lower junction steel plate (10) are in horizontal layout.
9. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: It is attached between the two neighboring RC T-beam (15) by wet seam (20);The M RC T-beams (15) top plate bottom is provided with multiple tracks diaphragm plate (21), and diaphragm plate (21) described in multiple tracks is long along the longitudinal direction that need to remove beam section (14) Degree is laid from front to back, and multiple diaphragm plates (21) carry out cloth along the transverse width direction that need to remove beam section (14) If;Front end hole for hoist group is constituted positioned at all holes for hoist (17) that need to remove beam section (14) front end, positioned at beam section (14) need to be removed All holes for hoist (17) composition rear end hole for hoist group of rear end, the front end hole for hoist group and the rear end hole for hoist group are in symmetrical Lay.
10. according to being removed and construction method of installation across both wired bridge whole groups on described in claim 1 or 2, it is characterised in that: Vertical lifting part (16) described in step 3 is fining twisted steel, and the fining twisted steel bottom is provided with bottom stop nut (19), the bottom stop nut (19) is in horizontal layout and it is installed in joist section (18) lower section, each joist section The through hole that left and right two is passed through for vertical lifting part (16) respectively is provided with section (18).
CN201610679484.6A 2016-08-17 2016-08-17 On removed and construction method of installation across both wired bridge whole groups CN106149576B (en)

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CN106758886B (en) * 2016-11-24 2018-07-24 沈阳铁道勘察设计院有限公司 A kind of method of the existing bridges and culverts structure of novel dismounting
CN107268463B (en) * 2017-08-18 2018-12-28 中铁二局集团有限公司 A kind of continuous beam method for dismounting
CN107747282B (en) * 2017-11-24 2019-03-01 中铁十一局集团第一工程有限公司 On across both wired old bridge overall pulling down methods
CN108487089B (en) * 2018-04-03 2019-08-02 锦州铁道勘察设计院有限公司 A method of railroad bridge is removed and set up on hillside
CN108457207B (en) * 2018-04-08 2020-05-19 中铁八局集团第二工程有限公司 Method for dismantling multi-span bridge body of operation line by utilizing longitudinal connection of bridge girder erection machine
CN111155451A (en) * 2020-01-16 2020-05-15 中铁十九局集团第六工程有限公司 Method for dismantling highway-span iron bridge

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CN202416191U (en) * 2011-12-29 2012-09-05 中交第四公路工程局有限公司 Descending-type movable mould frame offshore dismounting main beam lifting device
JP5865156B2 (en) * 2012-04-03 2016-02-17 株式会社駒井ハルテック Bridge girder erection / removal device and bridge girder new / removal method using it
JP6081117B2 (en) * 2012-09-24 2017-02-15 株式会社ネクスコ東日本エンジニアリング How to remove existing bridge and update existing bridge
CN103243663B (en) * 2013-05-03 2015-06-17 广东省长大公路工程有限公司 Construction process for using bridge girder erection machine to remove T-shaped cantilever continuous rigid frame box girders
CN103938557B (en) * 2014-03-11 2016-01-20 卢来运 A kind of bridge crossing method for dismounting
CN104480868B (en) * 2014-12-13 2016-06-22 中铁十九局集团第二工程有限公司 On tear beam method open across the highway bridge of railway in operation

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