CN106758750B - Concrete-filled steel tube truss combination beam and construction method with replaceable floorings - Google Patents

Concrete-filled steel tube truss combination beam and construction method with replaceable floorings Download PDF

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Publication number
CN106758750B
CN106758750B CN201710160194.5A CN201710160194A CN106758750B CN 106758750 B CN106758750 B CN 106758750B CN 201710160194 A CN201710160194 A CN 201710160194A CN 106758750 B CN106758750 B CN 106758750B
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China
Prior art keywords
floorings
anchor
hole
plate
pin
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CN106758750A (en
Inventor
王海良
李长坤
杨新磊
任权昌
董鹏
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Tianjin Chengjian University
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Tianjin Chengjian University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D6/00Truss-type bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for 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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/40Plastics

Abstract

The present invention relates to a kind of concrete-filled steel tube truss combination beams with replaceable floorings, including steel pipe truss, it is characterised in that:Further include along bridge to the disconnectable floorings of polylith for being laid on the steel pipe truss top successively;The top of the steel pipe truss has the pipe that winds up, and multigroup connecting plate is fixed on the pipe that winds up, has screw hole on the connecting plate;The lower part of the floorings be equipped with the one-to-one positioning groove of multigroup connecting plate and with the one-to-one anchor hole of the screw hole, the positioning groove and the connecting plate plane contact, the floorings are with the connecting plate by being fixedly connected through the mechanical anchor of the screw hole and anchor hole;Pass through gear finger anchor connection between two pieces of adjacent floorings.The present invention can be convenient for the replacement of floorings in bridge use, shorten construction period, reduce difficulty of construction, certifiable construction quality and personnel safety, reduction to construction site requirement.

Description

Concrete-filled steel tube truss combination beam and construction method with replaceable floorings
Technical field
The invention belongs to technical field of building construction, more particularly to a kind of concrete filled steel tube with replaceable floorings Truss combination beamss and construction method.
Background technology
Concrete-filled steel tube truss combination beam is a kind of novel bridge structure, and being completed this type bridge has dry lake grand bridge Deng.The dead weight of the type bridge relatively reduces 50% or so with across footpath concrete beam bridge, is increasing bridge span ability simultaneously, can also subtract Few bridge substructure quantities, therefore the bridge type has good development prospect.
Space concrete filled steel tube truss combination beamss construction both at home and abroad at present, generally first using the methods of dilatory, segmental hoisting Steel pipe truss is set up, then the Pumping concrete into wind up pipe and the lower chord tube of steel pipe truss again, waits for that the concrete in steel pipe reaches To after design requirement, with the support that steel pipe truss is cast-in-place floorings template, a high position sets up floorings template, cast-in-site bridge floor Plate.Floorings are poured into a mould using the method, template installation, concrete cast are completed in high-altitude in situ, and the duration is longer, difficulty of construction Larger, floorings construction quality is not easy to ensure, there are very big hidden danger for personnel safety and architecture quality, and change difficulty.
To shorten the construction period, ensureing floorings construction quality, floorings can also be poured before installing steel pipe truss, that is, poured It builds the floorings of completion and steel pipe truss is drawn or lifted together and sets up.When using such construction method, floorings will increase steel Construction weight when tubular truss is installed.Large tonnage crane segmentation can be used in place not high for bridge pier, that temporary rest pier can be arranged Steel pipe truss of the lifting with floorings;But when bridge pier is higher or temporary rest pier cannot be arranged, using crane segmental hoisting Method then cannot achieve, can only use it is dilatory set up, at this point, heavy weight deck structrue will produce when great cantilever will be caused to work Raw very big internal force, causes this structural system and construction method cannot achieve, and can only use and first set up steel pipe truss, constructs pour again Build the construction method of floorings.
In summary, it is necessary to design one kind can widen the steel pipe concrete truss structure place scope of application, shorten the construction period, Ensure the novel mounting structure and construction method of work progress personnel safety and construction quality.
Invention content
Present invention seek to address that concrete-filled steel tube truss installation period is long in the prior art, it is serious to be limited by fabricating yard Technical problem and construction period can be shortened, reduce difficulty of construction, can guarantee construction quality and personnel safety, reduction by providing one kind The concrete-filled steel tube truss combination beam and construction method with replaceable floorings that construction site is required.
The present invention is adopted the technical scheme that solve technical problem present in known technology:One kind having replaceable The top of the concrete-filled steel tube truss combination beam of floorings, including steel pipe truss, the steel pipe truss has the pipe that winds up, and further includes Along bridge to the disconnectable floorings of polylith for being laid on the steel pipe truss top successively, it is characterised in that:It is described to wind up on pipe It is fixed with multigroup connecting plate, there is screw hole on the connecting plate;The lower part of the floorings is equipped with and multigroup connecting plate one One corresponding positioning groove and with the one-to-one anchor hole of the screw hole, the positioning groove connects with the connecting plate plane It touches, the floorings are with the connecting plate by being fixedly connected through the mechanical anchor of the screw hole and anchor hole;Adjacent two Pass through gear finger anchor connection between floorings described in block;The mechanical anchor includes anchor pole, liner plate, pin, tightening spring; The upper and lower ends of the anchor pole all have threaded portion, and the outer circumference of the anchor pole is evenly equipped with several liner plates, adjacent two institute It states and is connected by the pin between liner plate, the stretching for applying radial support power is equipped between the liner plate and the anchor pole Spring;It is fitted in the anchor hole of the mechanical anchor and is perfused with polyurethane elastomeric materials;The gear finger includes dialling Dynamic pin key and handsetting gear, the both sides for stirring pin key are equipped with straight-tooth portion, center bolt are fixed on the handsetting gear; The suitable bridge of the floorings is equipped with pin-shifting hole to end face, and the suitable bridge of the floorings is set on the corresponding position of other end There is finger jack, the position that the finger jack is corresponded on the end top surface of the floorings is equipped with mounting hole, the pin-shifting hole Both sides be equipped with poke hole;The pin key of stirring is fitted in the pin-shifting hole, and the handsetting gear is equipped in the poke hole, The both sides for stirring pin key pass through tooth engagement with handsetting gear;It is fitted in the mounting hole and described stirs pin for locking The finger fixing bolt of key, filling out envelope in the poke hole has polyurethane elastomeric materials, the center bolt top of the handsetting gear Driving lever nut with pulling hole cover board is stamped and for locking pulling hole cover board (11).
The present invention can also use following technical measures:
The pipe upper edge pipe range direction of winding up of the steel pipe truss is welded with multigroup otic placode, and the connecting plate is welded on the ear On plate.
It is applied in seam between the adjacent floorings and is formed with fluid sealant, the seam top is embedded with the rubber of water-swellable Adhesive tape.
Buckle closure has an anchor hole cover board in the anchor hole, and the anchor hole cover board is by being fitted in the anchor bolt nut lock of the anchor pole Tightly.
A kind of construction method of the concrete-filled steel tube truss combination beam with replaceable floorings described in power, including it is as follows Construction procedure:
1) it, loosens along bridge to finger fixing bolt, opens pulling hole cover board, reversed by handsetting gear and stir pin key;
2) anchor hole cover board, is opened, together polyurethane elastomeric materials and tightening spring in burn off anchor hole, anchor pole is screwed out and is connected Fishplate bar;
3) floorings, are lifted by crane;
4) the dismountable floorings of same specification, are hung again;
5) mechanical anchor, is put into anchor hole, anchor pole lower end screws in connecting plate, and pine completes machinery except the pin of mechanical anchor It anchors, pours into polyurethane elastomeric materials in anchor hole, be used in combination anchor hole cover board to cover anchor hole, screw anchor bolt nut;
6) it, stirs pin key to be inserted into finger jack, is fixed with finger fixing bolt and stir pin key, it is suitable to complete floorings Bridge to anchor connection, then covers poke hole with pulling hole cover board and with driving lever nut tightening.
The invention has the advantages and positive effects that:
In concrete-filled steel tube truss combined beam structure of the present invention, prefabricated bridge process can be with bridge lower junction Structure, construction process, which synchronize, to be carried out, and the pouring construction of follow-up floorings is changed to assembly construction, avoids high-altitude concrete It pours, operation of vibrating, can shorten the construction period, ensure construction quality and construction personnel's safety.When floorings are installed, floorings and steel pipe The connection type of truss, adjacent floorings and floorings is mechanical anchoring, and this anchorage style both can guarantee steel and concrete Effective combination, and have certain deformability, can be redistributed by the stiffness variation of connector faying face shearing, energy It avoids individual connector stress excessive, while preventing steel pipe from stress raisers occur with concrete.Connected using mechanical anchor formula Fitting can also reduce due to steel and temperature effect caused by concrete difference linear expansion coefficient.When being installed due to connector Do not poured with floorings integral, so ensure that the changeing property of floorings, this provides convenience to the health maintenance of bridge. In conclusion the invention can widen the place scope of application of concrete-filled steel tube truss combination beam, shorten the period, ensure work progress Middle personnel safety and construction quality have good realistic meaning.
Description of the drawings
Fig. 1 is this combined beam structure cross-sectional view;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the vertical view of replaceable floorings;
Fig. 5 is the front view of Fig. 4;
Fig. 6 is otic placode and connecting plate front view;
Fig. 7 is the side view of Fig. 6;
Fig. 8 is the vertical view of Fig. 6;
Front view when Fig. 9 is mechanical anchor stretching;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is vertical view when mechanical anchor does not anchor;
Figure 12 is the vertical view of gear finger;
Figure 13 is the front view of Figure 12;
Figure 14 is floorings dismounting schematic diagram.
In figure:1, steel pipe truss;1-1, wind up pipe;1-2, lower chord tube;1-3, cornical;1-4, upper flat pipe;2, floorings;2- 1, positioning groove;2-2, anchor hole;2-3, pin-shifting hole;2-4, finger jack;2-5, poke hole;2-6, mounting hole;3, otic placode;4、 Connecting plate;5, mechanical anchor;5-1, anchor pole;5-2, tightening spring;5-3, liner plate;5-4, pin;6, anchor hole cover board;7, anchor bolt spiral shell It is female;8, polyurethane elastomeric materials;9, gear finger;9-1, pin key is stirred;9-2, handsetting gear;10, finger fixing bolt;11、 Pulling hole cover board;12, driving lever nut.
Specific implementation mode
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing Detailed description are as follows:
Please refer to Fig.1-Figure 14, a kind of concrete-filled steel tube truss combination beam with replaceable floorings, including steel pipe purlin Frame 1.The structure of steel pipe truss 1 as known to building field technical staff, a kind of be hinged each other at both ends by steel pipe and At structure, the plane or space structure with triangular element being made of straight-bar comprising two wind up pipe 1-1, one Root lower chord tube 1-2, several cornical 1-3 and upper flat pipe 1-4, the pipe 1-1 that winds up is parallel with lower chord tube 1-2, and cornical 1-3 is connected to described It winds up between pipe 1-1 and lower chord tube 1-2, upper flat pipe 1-4 is connected between the pipe 1-1 that winds up.
The axial direction of the above-mentioned pipe 1-1 and lower chord tube 1-2 that winds up is bridge to further including along bridge to being laid on the steel pipe purlin successively The disconnectable floorings of the polylith on frame top 2.To construct, concreting in advance is prefabricated to be formed floorings 2.Floorings 2 and steel pipe Connection type between truss 1 is as follows:
It is fixed with multigroup connecting plate 4 on the pipe 1-1 that winds up, there is screw hole on the connecting plate 4.The floorings 2 Lower part be equipped with 4 one-to-one positioning groove 2-1 of multigroup connecting plate and with the one-to-one anchor hole of the screw hole 2-2, the positioning groove 2-1 and 4 plane contact of the connecting plate, the floorings 2 are with the connecting plate 4 by running through described Screw hole is fixedly connected with the mechanical anchor 5 of anchor hole 2-2.
In the present embodiment, the pipe 1-1 upper edge pipe ranges direction of winding up of the steel pipe truss 1 is welded with multigroup otic placode 3, the company Fishplate bar 4 is welded on the otic placode 3.The mechanical anchor 5 includes anchor pole 5-1, liner plate 5-3, pin 5-4, tightening spring 5-2. The upper and lower ends of the anchor pole 5-1 all have threaded portion, and the outer circumference of the anchor pole 5-1 is evenly equipped with several liner plate 5-3, It is equipped with and applies by the pin 5-4 connections between the adjacent two liner plate 5-3, between the liner plate 5-3 and the anchor pole 5-1 The tightening spring 5-2 of radial support power.It is fitted in the anchor hole 2-2 of the mechanical anchor 5 and is perfused with polyurethane Elastic material.
Specifically, the centers anchor hole 2-2 of floorings 2 are aligned with the screw hole center of connecting plate 4, by mechanical anchor 5 The lower ends threaded anchor pole 5-1 screw in the screw hole of connecting plate 4, pump the pin 5-4 for connecting lining plate 5-3 of mechanical anchor 5, Tightening spring 5-2 holds out against liner plate 5-3 on the anchor hole 2-2 inner walls of floorings 2, forms mechanical anchor.Then in anchor hole Polyurethane elastomeric materials 8 are poured into 2-2, cover anchor hole cover board 6, and anchor bolt nut 7 is screwed in the upper ends anchor pole 5-1.
Currently, domestic construction equipment and construction technology can ensure the prefabricated precision of floorings 2, the pass of this composite structure Can key is floorings 2 and steel pipe truss 1 work together.Between enhancing floorings 2 and the pipe 1-1 that winds up of steel pipe truss 1 Be coupled, prevent floorings 2 and relative shear sliding occur between the pipe 1-1 that winds up, except using wind up on pipe 1-1 weld otic placode 3 and Floorings 2 are anchored together outer, every piece of connecting plate 4 also 2 bottom recesses 2- of embedded floorings by mechanical anchor 5 by connecting plate 4 In 1 so that connecting plate 4 is held out against with groove 2-1 horizontal directions when occurred level displacement.
To ensure suitable bridge to 2 Shear transfers of adjacent floorings and installation being facilitated to align, adjacent two pieces of floorings 2 Between pass through 9 anchor connection of gear finger.In the present embodiment, the specific connection type between adjacent two pieces of floorings 2 is such as Under:
The gear finger 9 includes stirring pin key 9-1 and handsetting gear 9-2.The both sides for stirring pin key 9-1 are equipped with Straight-tooth portion is fixed with center bolt on the handsetting gear 9-2.The suitable bridge of the floorings 2 is equipped with pin-shifting hole to end face The suitable bridge of 2-3, the floorings 2 are equipped with finger jack 2-4, the end of the floorings 2 to the corresponding position of other end Both sides of the position equipped with mounting hole 2-6, the pin-shifting hole 2-3 that the finger jack 2-4 is corresponded on top surface are equipped with poke hole 2- 5.The pin key 9-1 that stirs is fitted in the pin-shifting hole 2-3, and the handsetting gear 9-2, institute are equipped in the poke hole 2-5 It states the both sides for stirring pin key 9-1 and handsetting gear 9-2 passes through tooth engagement.It is fitted in the mounting hole 2-6 for locking The finger fixing bolt 10 for stirring pin key 9-1 is stated, filling out envelope in the poke hole 2-5 there are polyurethane elastomeric materials, described to stir tooth The center bolt top of wheel, which is matched, is stamped pulling hole cover board 11 and the driving lever nut 12 for locking pulling hole cover board.
Specifically, by the pin-shifting hole 2-3 of adjacent two pieces of floorings 2 and the 2-4 alignment of finger jack, rotated by center bolt Handsetting gear 9-2 and driving are stirred pin key 9-1 and are stretched out in insertion finger jack 2-4 from pin-shifting hole 2-3, and adjacent two pieces are realized with this The pin joint of floorings 2.Held out against using finger fixing bolt 10 be inserted into finger jack 2-4 stir pin key 9-1 after, use polyurethane Poke hole 2-5 is filled out envelope by elastic material, then is covered with pulling hole cover board 11, is screwed with driving lever nut 12.Stir pin key 9-1 and finger The quantity of jack 2-4 can carry out adaptability design according to the width of practical floorings 2 can suitably increase when floorings are widened Quantity.
To ensure that adjacent 2 transverse joint of floorings is closely connected, when assembled floorings 2, seam coats between adjacent floorings Fluid sealant.And it is embedded with the rubber strip of water-swellable on seam top.
The construction method of replaceable floorings concrete-filled steel tube truss combination beam, refers to Fig. 1-14, including construct as follows Step:
1, disconnectable 2 prefabricated construction of floorings is completed in prefabricated bridge 2 in advance in precasting yard.
2, steel pipe truss 1, the concrete perfusion in the pipe 1-1 that winds up, the lower chord tube 1-2 of steel pipe truss 1 are installed on bridge pier.
3, after the pipe 1-1 that winds up, lower chord tube 1-2 inner concretes reach design strength, block-by-block places bridge floor since end of the bridge Plate 2 is used in combination mechanical anchor 5 by floorings 2 and the vertical anchor connection of concrete-filled steel tube truss, is fixed with gear finger 9 and finger Bolt 10 is by floorings 2 along bridge anchor connection to each other;
4, end of the bridge floorings 2 are after installation is complete, and assembled platform sling device completes follow-up bridge on the floorings 2 that installation is complete The amplifier of panel and anchor connection, until installing whole floorings 2.
The floorings of replaceable floorings concrete-filled steel tube truss combination beam change construction method, refer to Fig. 1-14, packet Include following construction procedure:
1, it loosens along bridge to finger fixing bolt 10, opens pulling hole cover board 11, reversed by handsetting gear 9-2 and stir pin key 9-1;
2, anchor hole cover board 6 is opened, together polyurethane elastomeric materials 8 and tightening spring 5-2 in burn off anchor hole 2-2, machinery Anchor bolt 5 fails, and screws out anchor pole 5-1;
3, floorings 2 are lifted by crane;
4, the dismountable floorings 2 of same specification are hung again;
5, mechanical anchor 5 is put into anchor hole 2-2, the lower ends anchor pole 5-1 screw in connecting plate 4, and pine removes the pin of mechanical anchor 5 5-4 completes mechanical anchor, pours into polyurethane elastomeric materials 8 in anchor hole 2-2, anchor hole cover board 6 is used in combination to cover anchor hole 2-2, revolves Tight anchor bolt nut 7;
6, it stirs pin key 9-1 to be inserted into finger jack 2-4, pin key 9-1 is stirred with the fixation of finger fixing bolt 10, it is complete At floorings 2 along bridge to anchor connection, then poke hole 2-5 is covered with pulling hole cover board 11 and screwed with driving lever nut 12.

Claims (5)

1. a kind of concrete-filled steel tube truss combination beam with replaceable floorings, including steel pipe truss (1), the steel pipe truss (1) top has the pipe (1-1) that winds up, and further includes removable to the polylith for being laid on the steel pipe truss (1) top successively along bridge The floorings (2) changed, it is characterised in that:
It is fixed with multigroup connecting plate (4) on the pipe that winds up (1-1), there is screw hole on the connecting plate (4);The floorings (2) lower part is equipped with the one-to-one positioning groove (2-1) of multigroup connecting plate (4) and is corresponded with the screw hole Anchor hole (2-2), the positioning groove (2-1) and the connecting plate (4) plane contact, the floorings (2) and the company Fishplate bar (4) is fixedly connected by running through the screw hole with the mechanical anchor (5) of anchor hole (2-2);Two pieces of adjacent bridge floors Pass through gear finger (9) anchor connection between plate (2);
The mechanical anchor (5) includes anchor pole (5-1), liner plate (5-3), pin (5-4), tightening spring (5-2);The anchor pole The upper and lower ends of (5-1) all have threaded portion, and the outer circumference of the anchor pole (5-1) is evenly equipped with several liner plates (5-3), phase It is connected by the pin (5-4) between adjacent two liner plates (5-3), is set between the liner plate (5-3) and the anchor pole (5-1) There is the tightening spring (5-2) for applying radial support power;It is fitted in the anchor hole (2-2) of the mechanical anchor (5) It is perfused with polyurethane elastomeric materials (8);
The gear finger (9) includes stirring pin key (9-1) and handsetting gear (9-2), the both sides for stirring pin key (9-1) Equipped with straight-tooth portion, center bolt is fixed on the handsetting gear (9-2);The suitable bridge of the floorings (2) is set on end face There is pin-shifting hole (2-3), the suitable bridge of the floorings (2) is equipped with finger jack (2-4) to the corresponding position of other end, described The position that the finger jack (2-4) is corresponded on the end top surface of floorings (2) is equipped with mounting hole (2-6), the pin-shifting hole (2- 3) both sides are equipped with poke hole (2-5);The pin key (9-1) of stirring is fitted in the pin-shifting hole (2-3), the poke hole The handsetting gear (9-2) is equipped in (2-5), the both sides for stirring pin key (9-1) are nibbled with handsetting gear (9-2) by tooth It closes;It is fitted in the mounting hole (2-6) for locking the finger fixing bolt (10) for stirring pin key (9-1), described group Envelope is filled out in dynamic hole (2-5) polyurethane elastomeric materials, and the center bolt top of the handsetting gear (9-2), which is matched, is stamped pulling hole cover board (11) and the driving lever nut (12) for locking pulling hole cover board (11).
2. the concrete-filled steel tube truss combination beam according to claim 1 with replaceable floorings, it is characterised in that:Institute The pipe that winds up (1-1) the upper edge pipe range direction for stating steel pipe truss (1) is welded with multigroup otic placode (3), and the connecting plate (4) is welded on institute It states on otic placode (3).
3. the concrete-filled steel tube truss combination beam according to claim 1 with replaceable floorings, it is characterised in that:Phase It is applied in seam between the adjacent floorings (2) and is formed with fluid sealant, the seam top is embedded with the rubber strip of water-swellable.
4. the concrete-filled steel tube truss combination beam according to claim 1 with replaceable floorings, it is characterised in that:Institute Stating buckle closure in anchor hole (2-2) has an anchor hole cover board (6), and the anchor hole cover board (6) is by being fitted in the anchor bolt of the anchor pole (5-1) Nut (7) is locked.
5. a kind of construction method of the concrete-filled steel tube truss combination beam described in claim 1 with replaceable floorings, special Sign is, including following construction procedure:
1) it, loosens along bridge to finger fixing bolt (10), opens pulling hole cover board (11), reversed and stirred by handsetting gear (9-2) Pin key (9-1);
2) anchor hole cover board (6), is opened, together burn off anchor hole (2-2) interior polyurethane elastomeric materials (8) and tightening spring (5-2), Anchor pole (5-1) is screwed out into connecting plate (4);
3), lifting floorings (2);
4) the dismountable floorings (2) of same specification, are hung again;
5) mechanical anchor (5), is put into anchor hole (2-2), the lower end anchor pole (5-1) screws in connecting plate (4), and pine removes mechanical anchor (5) pin (5-4) completes mechanical anchor, pours into polyurethane elastomeric materials (8) in anchor hole (2-2), anchor hole cover board (6) is used in combination Anchor hole (2-2) is covered, anchor bolt nut (7) is screwed;
6) it, stirs pin key (9-1) to be inserted into finger jack (2-4), pin key (9- is stirred with finger fixing bolt (10) fixation 1) floorings (2), are completed along bridge to anchor connection, then with pulling hole cover board (11) covers poke hole (2-5) and with driving lever nut (12) it screws.
CN201710160194.5A 2017-03-17 2017-03-17 Concrete-filled steel tube truss combination beam and construction method with replaceable floorings Active CN106758750B (en)

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CN107905115A (en) * 2017-12-07 2018-04-13 四川建筑职业技术学院 Through Steel pipe concrete truss combination beamss bridge construction method

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JP4020406B2 (en) * 2006-06-28 2007-12-12 Jfe工建株式会社 Formwork support mechanism and placement method
KR101263660B1 (en) * 2011-04-20 2013-05-22 주식회사 장헌산업 Connecting Structure of Concrete Members
CN102535328A (en) * 2012-02-10 2012-07-04 中铁第五勘察设计院集团有限公司 In-pipe prestressed steel-pipe truss composite simply-supported beam structure
CN103061243A (en) * 2013-01-30 2013-04-24 福州大学 Prestressed steel tube concrete combination trussed beam and construction method thereof
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