CN106437171A - Multi-span continuous steel latticed shell accumulative sliding construction method - Google Patents

Multi-span continuous steel latticed shell accumulative sliding construction method Download PDF

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Publication number
CN106437171A
CN106437171A CN201610569587.7A CN201610569587A CN106437171A CN 106437171 A CN106437171 A CN 106437171A CN 201610569587 A CN201610569587 A CN 201610569587A CN 106437171 A CN106437171 A CN 106437171A
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CN
China
Prior art keywords
shell unit
net shell
steel
span continuous
net
Prior art date
Application number
CN201610569587.7A
Other languages
Chinese (zh)
Inventor
方耿珲
方世宏
梁湖清
李冠尧
潘正玉
何伟宗
Original Assignee
广州建筑股份有限公司
广州市第建筑工程有限公司
广州市第一建筑工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 广州建筑股份有限公司, 广州市第建筑工程有限公司, 广州市第一建筑工程有限公司 filed Critical 广州建筑股份有限公司
Priority to CN201610569587.7A priority Critical patent/CN106437171A/en
Publication of CN106437171A publication Critical patent/CN106437171A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements

Abstract

The invention relates to a multi-span continuous steel latticed shell accumulative sliding construction method. The multi-span continuous steel latticed shell accumulative sliding construction method comprises the following steps that (1) structure safety computing is conducted, a scaffold, a sliding track beam, a track and a tower crane which meet the requirements are determined; (2) the scaffold, the sliding track beam, the track and the tower crane are mounted according to design requirements; (3) a first rank of latticed shell unit is assembled in an assembling zone; (4) steel strands are pulled between footings on the two side of the first rank of latticed shell unit through proper structures, and stress is pre-applied to the steel strands; and (5) the first rank of latticed shell unit is made to advance along the track through a push-pull device, the first rank of latticed shell unit is stopped when gets over the distance of the length of a second rank of latticed shell, then the second rank of latticed shell unit is assembled and moved in the same mode and so on, a whole latticed shell is formed after mounting of all the latticed shell units is completed. The method is convenient to construct, stable and safe.

Description

Many Span Continuous steel screen accumulation slippage construction method
Technical field
The invention belongs to construction engineering field, relate to a kind of multispan steel screen construction method, particularly relate to one Plant the construction method of many Span Continuous steel screen accumulation slippage.
Background technology
The complicated continuous steel screen structure of current railway station building many employings large area large span, in the prior art for area The complicated continuous steel screen structural system of bigger large span mainly has two kinds of methods:1st, using assembled in situ, the 2nd, monomer sliding is spelled Dress.
Wherein, when traditional original position is assembled in installation large area large span complicated continuous print steel screen structure, lifting is set Standby effectively lifting area requirement is high, needs to increase multiple stage tower crane or truck crane carries out the covering to boundary of works area, mechanical one-shift Expensive.Furthermore, during due to original position assembly, weld job needs mounting platform, sets up installation moulding bed amount big, the construction work set up Phase is long, and turnover material puts into big, takies tower crane resource, and welding capacity set up by moulding bed increases, and need to put into personnel more, costly.
Wherein, monomer slipping and assembling, needs to use auxiliary girder steel and temporary steel bearing, while increasing steel using amount, due to It is to use interim auxiliary girder steel and temporary steel bearing, after putting in place, just remove auxiliary girder steel and temporary steel bearing is installed to Position, period, the stability of monomer structure was not good enough during monomer sliding, potential safety hazard easily occurs.
So, need a kind of more advanced construction method of installation for the complicated continuous steel screen structure of large area large span.
Content of the invention
It is an object of the invention to provide a kind of many Span Continuous steel screen accumulation slippage construction method, it can be executed in reduction In the case of work cost and increase working security, improve construction speed.
For achieving the above object, the present invention adopts the following technical scheme that:
Many Span Continuous steel screen accumulation slippage construction method, described many Span Continuous steel screen is spliced structure by multiple net shell units Becoming, described construction method comprises the steps:
(1) carry out structure to calculate safely, be determined for compliance with require moulding bed, sliding rail, tower crane;Described sliding rail is by standing Post supports, and the platform that described moulding bed is formed is used as the build-up area of assembled net shell unit, and described build-up area is positioned at described many Span Continuous One end of steel screen design and installation position, described sliding rail extends to described many Span Continuous from the one end at described build-up area place The other end extension of the design and installation position of steel screen and bearing of trend are parallel to the longitudinal center of described many Span Continuous steel screen Axle;
(2) described moulding bed, described sliding rail, described tower crane are installed;
(3) at the assembled first product net shell unit of described build-up area;
(4) by suitable structure drawing steel stranded wire and right between the side feet of assembled the first good product net shell unit Described steel strand wires prestress;
(5) the first product net shell unit is moved forward along described sliding rail, when the first product net shell unit has walked Stop after the distance of the length of two product net shells;
(6) at the assembled second product net shell unit of described build-up area;
(7) by suitable structure drawing steel stranded wire and right between the side feet of assembled the second good product net shell unit Described steel strand wires prestress;
(8) the first product net shell unit and the second product net shell unit are moved forward along track, when its three products net of having walked Stop after the distance of the length of shell unit;
(9) at the assembled three products net shell unit of described build-up area;
(10) repeat the above steps, after each product net shell unit puts in place, stops above-mentioned steps, installs fixing, is formed whole Described many Span Continuous steel screen of body;
(11) removal steel strand wires.
Preferably, step (5) and step (8) utilize push-pull device at fixed push-and-pull net shell unit to move along sliding rail, institute State push-pull device at fixed and include rail clamping device, oil cylinder and pushing tow bracket;Described rail clamping device is clamped in the rail walls of described track;Described oil One end of cylinder is fixedly connected on described rail clamping device, and the other end is fixing to be connected on described pushing tow bracket, and described pushing tow bracket passes through Suitable construction is fixed on described net shell unit.
Preferably, described push-pull device at fixed includes plural described pushing tow bracket, pushing tow bracket more than said two Bottom be fixed on common cross member, slide on the track in described cross member bottom, said two pushing tow bracket suitable Position is fixed on described net shell unit by suitable construction.
Preferably, in step (4) and step (7), each right between the side feet of the front-end and back-end of every product net shell unit Drawing steel stranded wire, preferably every side two steel strand wires.
Preferably, the side feet at assembled good net shell unit respectively arranges a steel-casting, solid on described steel-casting Determining steel strand wires bearing, described steel strand wires are arranged on the steel strand wires bearing of both sides.
The construction method of the present invention is when installing many Span Continuous steel screen, by sliding rail, and will be (assembled at fixing moulding bed District) the net shell unit that finishes of upper assembly elapses forward the distance of a net shell unit;Continue on fixing moulding bed more assembled next Individual net shell unit, elapses the distance of a net shell unit further along after installing, by continuous assembled, sliding, to all Net shell unit carries out accumulation slippage, and final installation fixes the many Span Continuous steel screen being integrally formed.Utilize accumulation slippage, in multispan When continuous steel screen is installed, it is only necessary to set up a moulding bed and the tower crane of a covering moulding bed scope, so just effectively reduce The amount of setting up of moulding bed and duration, that reduces moulding bed sets up expense and weld job amount, reduces the input of the lifting machines such as tower crane, fall The danger of low easy overall collapse when using auxiliary girder steel and temporary steel bearing, and by arranging steel strand, Eliminate large steel net shell in slipping, the active force outside owing to certainly scratching arch springing under Gravitative Loads, increase continuous steel screen Stability in slipping and security;And, in the case of reducing construction cost and increase working security, accelerate Construction speed.
Brief description
Fig. 1 is the schematic diagram in the present invention many Span Continuous steel screen accumulation slippage construction method before the assembly of net shell unit.
Signal when Fig. 2 is that in the present invention many Span Continuous steel screen accumulation slippage construction method, the first product net shell unit is assembled Figure.
Fig. 3 is the signal of the first product net shell unit sliding in the present invention many Span Continuous steel screen accumulation slippage construction method Figure.
Signal when Fig. 4 is that in the present invention many Span Continuous steel screen accumulation slippage construction method, the second product net shell unit is assembled Figure.
Fig. 5 is the signal of the second product net shell unit sliding in the present invention many Span Continuous steel screen accumulation slippage construction method Figure.
Fig. 6 be in the present invention many Span Continuous steel screen accumulation slippage construction method ensuing net shell unit continue assembled and The schematic diagram of sliding.
Fig. 7 is that in the present invention many Span Continuous steel screen accumulation slippage construction method, all net shell units are assembled complete and are slid onto The schematic diagram of position.
Fig. 8 is the schematic diagram of push-pull device at fixed in the present invention many Span Continuous steel screen accumulation slippage construction method.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are discussed in detail.
As shown in Fig. 1 Fig. 8, the present embodiment many Span Continuous steel screen accumulation slippage construction method, it is used for many Span Continuous steel The installation of net shell, this many Span Continuous steel screen is spliced to form by multiple net shell units.This construction method includes following several step.
(1) carry out structure to calculate safely, be determined for compliance with moulding bed, sliding rail beam and track, the tower crane requiring;Including:Enter The calculating of row moulding bed, sliding rail beam and track, calculates the maximum weight needing Steel Structure to be mounted, to tower crane effective covering model The calculating enclosed, determines the model of tower crane, the installation of moulding bed.The relevant knowledge of building trade is used in above-mentioned calculating, does not tire out at this and states.
As shown in Fig. 1 Fig. 7, sliding rail beam 10 is by upright supports, and pillar here includes main support column 21 with temporarily Support column 22, main support column 21 plays main support effect, and temporary support columns 22 assists supporting role.Sliding rail beam 10 has four Bar, sliding rail 11 just on sliding rail beam 10 or as shown in Figure 8 sliding rail beam 10 itself can form sliding rail, sliding The longitudinal direction moving track girder along the many Span Continuous steel screen intending installation extends parallel to its vertical central axis.Moulding bed 31 is formed Platform be used as the build-up area 30 of assembled net shell unit, build-up area 30 is positioned at the one of many Span Continuous steel screen design and installation position End, sliding rail beam 10 extends to the other end of many Span Continuous steel screen design and installation position from the one end at build-up area 30 place, As described above, its bearing of trend is parallel to the vertical central axis of many Span Continuous steel screen.
(2) moulding bed the 31st, sliding rail beam 10 and track the 11st, tower crane is installed.
(3) as in figure 2 it is shown, at the assembled first product net shell unit A of build-up area 30.
(4) by suitable structure drawing steel stranded wire and right between the side feet of assembled the first good product net shell unit A Steel strand wires prestress, guarantees the structural stability of net shell unit with this and offsets its lateral pressure to track.In this enforcement In example, all to drawing two steel strand wires between the side feet of the front-end and back-end of net shell unit.
Preferably, each on the side feet of the front-end and back-end of net shell unit a steel-casting is fixed, solid on steel-casting Determining steel strand wires bearing, the two ends of every steel strand wires are separately mounted on the steel strand wires bearing of corresponding both sides.One end of steel strand wires Being fixed on corresponding steel strand wires bearing, the other end is arranged on steel strand wires bearing for applying stress.Certainly, in prior art Other suitable construction can also be used for this.
(5) push-pull device at fixed is utilized to elapse forward along track 11 first product net shell unit A, when the first product net shell unit row Stop after the distance of the length covering the second product net shell.
In this embodiment, it is preferred that, as shown in Figure 8, push-pull device at fixed includes rail clamping device the 41st, oil cylinder 42 and pushing tow bracket 43;Rail clamping device 41 is clamped in the rail walls of track 31;One end of oil cylinder 42 is fixedly connected on rail clamping device 41, and the other end is fixed Being connected on pushing tow bracket 43, pushing tow bracket 43 is fixedly connected on the bottom of net shell unit.In the present embodiment, every corresponding one Slide rail then arranges a push-pull device at fixed, 4 guide rails, arranges 4 push-pull device at fixed altogether in order to promote a product net shell unit.Each pushes away Drawing device includes two pushing tow brackets, and the bottom of two pushing tow brackets is fixed on common cross member, and cross member bottom is at sliding rail On road slide, the correct position of pushing tow bracket is fixed on net shell unit by suitable construction, such net shell unit have two auxiliary Help the strong point, prevent net shell unit from drawing and stick up or block.
This push-pull device at fixed integral installation is in the front end of net shell unit, and pushing tow bracket 43 is front, and rail clamping device 41 is rear.Work as folder When rail device 41 clamps in orbit, it provides oil cylinder 42 flexible fulcrum.Beam hanger stretches out, and promotes forward certain by net shell unit Distance, then rail clamping device 41 unclamps, and beam hanger shrinks, and rail clamping device 41 moves forward a certain distance, then presss from both sides rail clamping device 41 again Tight on the track of this position, beam hanger stretches out again, net shell unit pushes away front a certain distance again, so repeatedly, steppingly Net shell unit is promoted forward.Certainly, in other embodiment of the present invention, other suitable push-pull device at fixed can also be used.
(6) at the assembled second product net shell unit B of build-up area 30;
(7) by suitable structure drawing steel stranded wire and right between the side feet of assembled the second good product net shell unit B Steel strand wires prestress.In the present embodiment, the structure of the second product and all afterwards net shell unit drawing steel stranded wires and above-mentioned the The structure of one product net shell unit drawing steel stranded wire is identical.
(8) the first product net shell unit A and the second product net shell unit B is moved forward along track 31, when it has walked the 3rd Stop after the distance of the length of product net shell unit C;
(9) at the assembled three products net shell unit C of build-up area;
(10) repeat the above steps, after each product net shell unit puts in place, stops above-mentioned steps, installs fixing, is formed whole Many Span Continuous steel screen of body;
(11) removal steel strand wires.
The construction method of above-described embodiment have employed accumulation slippage mode, has only to set up a tire when installing latticed shell structure Frame and fix at one covering moulding bed tower crane, effectively reduce the amount of setting up and the duration of moulding bed, decrease it and set up expense With and weld job amount, reduce the input of the lifting machines such as tower crane simultaneously, reduce and using auxiliary girder steel and temporary steel bearing When easy overall collapse danger.And the method is by arranging steel strand, during eliminating large-scale mesh shell slippage, Owing to certainly scratching active force outside at arch springing under Gravitative Loads, increase stability in slipping for the continuous net shell and safety Property, in the case of reducing construction cost and increase working security, improve construction speed.
Described above is only the preferred embodiments of the present invention, certainly can not limit the protection model of the present invention with this Enclose.Any equivalents to technical solution of the present invention and replacement, all within protection scope of the present invention.

Claims (5)

1. more than Span Continuous steel screen accumulation slippage construction method, described many Span Continuous steel screen is spliced structure by multiple net shell units Becoming, described construction method comprises the steps:
(1) carry out structure to calculate safely, be determined for compliance with require moulding bed, sliding rail, tower crane;Described sliding rail is propped up by column Support, the platform that described moulding bed is formed is used as the build-up area of assembled net shell unit, and described build-up area is positioned at described many Span Continuous steel mesh One end of shell design and installation position, described sliding rail extends to described many Span Continuous steel mesh from the one end at described build-up area place The other end extension of the design and installation position of shell and bearing of trend are parallel to the vertical central axis of described many Span Continuous steel screen;
(2) described moulding bed, described sliding rail, described tower crane are installed;
(3) at the assembled first product net shell unit of described build-up area;
(4) by suitable structure drawing steel stranded wire between the side feet of good the first product net shell unit of assembly, and to described Steel strand wires prestress;
(5) the first product net shell unit is moved forward along described sliding rail, when the first product net shell unit has been walked the second product Stop after the distance of the length of net shell;
(6) at the assembled second product net shell unit of described build-up area;
(7) by suitable structure drawing steel stranded wire between the side feet of good the second product net shell unit of assembly, and to described Steel strand wires prestress;
(8) the first product net shell unit and the second product net shell unit are moved forward along track, when its three products net shell list of having walked Stop after the distance of the length of unit;
(9) at the assembled three products net shell unit of described build-up area;
(10) repeat the above steps, after each product net shell unit puts in place, stops above-mentioned steps, installs fixing, forms entirety Described many Span Continuous steel screen;
(11) removal steel strand wires.
2. many Span Continuous steel screen accumulation slippage construction method as claimed in claim 1, it is characterised in that:Step (5) and step Suddenly (8) utilize push-pull device at fixed push-and-pull net shell unit to move along sliding rail, described push-pull device at fixed include rail clamping device, oil cylinder and Pushing tow bracket;Described rail clamping device is clamped in the rail walls of described track;One end of described oil cylinder is fixedly connected on described folder rail On device, the other end is fixing to be connected on described pushing tow bracket, and described pushing tow bracket is fixed on described net shell unit by suitable construction On.
3. many Span Continuous steel screen accumulation slippage construction method as claimed in claim 2, it is characterised in that:Described push-pull device at fixed Including plural described pushing tow bracket, the bottom of pushing tow bracket more than said two is fixed on common cross member, institute Stating cross member bottom to slide on the track, the proper site of said two pushing tow bracket is fixed on described net by suitable construction On shell unit.
4. many Span Continuous steel screen accumulation slippage construction method as claimed in claim 1, it is characterised in that:Step (4) and step Suddenly in (7), each steel strand between the side feet of the front-end and back-end of every product net shell unit.
5. many Span Continuous steel screen accumulation slippage construction method as claimed in claim 1, it is characterised in that:At the good net of assembly The each fixing steel-casting of side feet of shell unit, fixes steel strand wires bearing on described steel-casting, and described steel strand wires are arranged on two On the steel strand wires bearing of side.
CN201610569587.7A 2016-07-18 2016-07-18 Multi-span continuous steel latticed shell accumulative sliding construction method CN106437171A (en)

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