CN105696799A - Construction method for splicing large-span steel trusses in a suspending manner at top of extra-high plant - Google Patents
Construction method for splicing large-span steel trusses in a suspending manner at top of extra-high plant Download PDFInfo
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- CN105696799A CN105696799A CN201610043769.0A CN201610043769A CN105696799A CN 105696799 A CN105696799 A CN 105696799A CN 201610043769 A CN201610043769 A CN 201610043769A CN 105696799 A CN105696799 A CN 105696799A
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- steel truss
- splicing
- lower edge
- beam bridge
- wind
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method for splicing large-span steel trusses in a suspending manner at the top of an extra-high plant. The construction method comprises the following steps: a, determining the sectioned splicing scheme of each steel truss according to the hoisting capacity of a hoisting device equipped on a construction site; b, designing and manufacturing components according to the splicing scheme; c, using a double beam bridge crane, equipped in an existing plant, as a suspended operation platform; d, erecting customized supporting frames on the girder of the double beam bridge crane; e, hoisting the components by a tower crane equipped in a plant under construction to the suspended operation platform for splicing; f, conducting unloading deformation monitoring; g, moving the double beam bridge crane to a part under a next to-be-mounted steel truss, and repeating the e process to splice the steel truss; and constructing a truss girder between the spliced adjacent steel trusses. The tower crane and the double beam bridge crane, which are equipped in the plant under construction, are sufficiently used, and the components are hoisted on the suspended operation platform for splicing forming. The construction method is fast to mount, short in construction period, high in safety, and low in mounting cost.
Description
Technical field
The present invention relates to the installation method of a kind of steel construction, in particular it relates to a kind of unsettled construction method of large span steel truss, particularly a kind of construction method at the nearly hundred meters high unsettled splicing large span steel truss of Factory Building top layer。
Background technology
Large Launch Vehicle is the power set of Spacecraft Launch, and the rocket vertically-arranged setting height(from bottom) of slim-lined construction is generally at tens meters, and supporting Factory Building to have corresponding space and height could meet vertical general assembly and test request certainly。In reality, Factory Building for Large Launch Vehicle general assembly and test is one highly nearly hundred meters, structure is the monolayer flat-roofed house of interior empty exterior-excess, the roofing layer main body steel truss by one group of parallel spaced-apart and the trusses for lateral connection collectively constitute, and every steel truss two ends frame respectively is on the body of wall steel structure of left and right。Because the general assembly of supporting Large Launch Vehicle and test Factory Building span are up to several ten meters, nearly wantonly ten tons of every Pin steel truss weight。Owing to steel truss volume to be hoisted is big, Heavy Weight, with the routine building lifting appliance of job site configuration, it is impossible to realize the vertical-lift of nearly hundred meters。If employing the large-scale lifting appliance work compound of multiple stage, feasible theoretically, actually this hoisting method except cost greatly except, the most bad control is harmony, slightly deviation easily causes unbalance loading problem, the lighter causes the damage of lifting appliance, and severe one causes capsizing case, so this lifting method cannot be used for actual production。If setting up full hall scaffold in Factory Building, large span steel truss is spliced for platform with scaffold, although this scheme has operability, but build full hall scaffold and need to consume the steel pipe about kiloton, and the amount of building is big, long in time limit, the full hall frame hand cradle that maximum problem is built-in occupies the interior space, it is impossible to synchronizes to make rocket during building steel truss and assembles and test, correlation engineering also cannot be constructed, so this scheme does not possess practicality yet。
Summary of the invention
Present invention is generally directed to the overall difficult problem promoting the extremely high-rise Factory Building top layer of large span steel truss at the construction field (site), propose a kind of easy and simple to handle, construction easily, safety is good, engineering cost is few, man-hour economizes in the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer, the core technology of the method is the two-beam bridge crane making full use of Factory Building at the conventional tower crane and Factory Building self configuration of building period use, create high-altitude mounting platform nearby, the component broken the whole up into parts is shaped in the splicing of extra-high layer Factory Building top layer。
The present invention is achieved through the following technical solutions technical goal。
In the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer, it thes improvement is that construction follows these steps to carry out:
A, first, according to the limited unstressed analysis report of steel truss structure, in conjunction with the maximum crane capacity of tower crane that job site is equipped with, it is determined that steel truss merogenesis connection scheme；
B, design and make limit lower edge by merogenesis connection scheme, wind up in interior lower edge, crossed joint, web member, limit, in wind up and clamp, it is spliced into large span steel truss with above-mentioned component, lower edge therein is made up of two end edge lower edges and 2～5 interior lower edges saving coaxial sequential concatenation, winding up is winded up by two end edge and wind up in 2～5 coaxial sequential concatenation of joint forms, wind up and be positioned on lower edge, both are isometric and arranged in parallel, between crossed joint and web member are placed in lower edge and wind up, the joints clamp between each component connects。
C, utilization are slided to steel truss to be installed at the two-beam bridge crane constructing the factory buildings own, the unsettled operating platform of movable type in this, as steel truss installation exercise, measuring the crossbeam vertical dimension to steel truss lower edge base to be installed of two-beam bridge crane, during with this size and in conjunction with unloading, the value of steel truss deadweight downwarp determines bracing frame support height size；
D, the bracing frame of customization is placed on two-beam bridge crane crossbeam, two-beam bridge crane carry at least 3 one along and bracing frame alternately, on-demand move under every Pin steel truss to be installed；
E, the situ configuration that is used in constructing the factory buildings conventional tower crane, order lifting is torn the component of zero making open and is made to splice to the unsettled operating platform of described movable type, and splicing is sequentially from bottom to top, first outside and then inside；The first step does lower edge splicing, and first from two ends splicing edge lower edge, then lower edge in sequential concatenation wherein, the lower edge bracing frame being spliced into supports；Second step is sequential concatenation crossed joint inside from two ends；3rd step is winded up splicing on crossed joint, first winds up from two ends splicing edge, then winds up in sequential concatenation wherein, winds up and lower edge parallel spaced-apart being stitched together by crossed joint；4th step installs the web member being vertically arranged by first outside and then inside order, web member upper and lower side respectively with relative lower edge and docking of winding up；
F, lay down bracing frame, make steel truss unloading deformation monitoring；
G；Mobile two-beam bridge crane, to steel truss to be installed for next Pin, repeats e operation and does the steel truss splicing of position；
H, equidistantly connecting trusses between the steel truss completing splicing, the trusses laterally built constitutes each Pin steel truss integrated mounting structure。
As further improvement project, described limit lower edge and limit are winded up isometric, limit for length 6～10 meters, interior lower edge and interior wind up isometric, limit for length 6～12 meters。
As further improvement project, with the steel truss tearing zero component spicing forming type open, between each component, joints is on the basis connected with clamp and high-strength bolt, then by integrally welded to clamp periphery and joint plane。
The present invention compared with prior art, has the positive effect that:
1, steel truss merogenesis scheme rationally, be easy to lifting, connect reliable, advantageously account for the problem that volume is big, the lifting of Heavy Weight component superelevation is difficult；
2, after steel truss is broken, single construction weight is light, volume is little, the conventional tower crane being easy to utilize job site to configure is executed and is hung, component order is lifted on portable unsettled operating platform and splices, this " Formica fusca removal of home " method both need not rent the collaborative lifting of several large-scale lifting appliances, also without building full thorax scaffold in Factory Building for supporting, whole lifting process technology is less demanding, do not need to specially invite the high-level technical staff's on-the-spot guidance of relevant speciality, and recruitment economizes, splicing efficiency is high, good economy performance, maximum benefit is that construction safety is reliable；
3, make full use of at the two-beam bridge crane of interior configuration that constructs the factory buildings, operating platform in this, as splicing steel truss, also it is the carrier disposing splicing steel truss lower edge positioning datum simultaneously, two-beam bridge crane is in carrier closest under steel truss to be installed, bearing capacity meets the demand of splicing steel truss, also allow for workmen high-altitude to base oneself upon simultaneously, create a solid foundation for unsettled splicing large span steel truss；
4, splicing steel truss on two-beam bridge crane, under not affecting, the normal construction at other each position and mechanical and electric equipment installation, debugging, will not artificially cause the accident of delaying work, be greatly saved the duration, and its social benefit is much larger than economic benefit。
Accompanying drawing explanation
Fig. 1 is present configuration schematic perspective view, shows and splice two Pin large span steel truss in figure。
Fig. 2 shows that utilization is at the own two-beam bridge crane structural upright schematic diagram as portable unsettled operating platform that constructs the factory buildings。
Fig. 3 is splicing the oneth Pin large span steel truss structural upright schematic diagram on the basis of Fig. 2 completion。
Fig. 4 is after Fig. 3 completes, and outer shifting two-beam bridge crane is to the structural upright schematic diagram of next Pin large span steel truss stitching position。
Detailed description of the invention
Below according to accompanying drawing and in conjunction with the embodiments, the invention will be further described。
Embodiment 1
Shown in the drawings is the Application Example in the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer, its carrier is that rocket vertically assembles testing factory room, need to dispose 10 Pin steel truss at built Factory Building top layer, every Pin steel truss weighs 37 tons, span 38m, upper lower edge limit difference in height 6 meters, installs free height 94.1 meters。So large-scale hardware is raised nearly 100 meter ampere dresses, its technical difficulty is very huge, adopt conventional method to need to rent several set Large-scale Hoisting equipment collaboration liftings, or in Factory Building to be installed, build full thorax scaffold for supporting, although both approaches all has operability。But, it is embodied as removing difficulty big, take device resource how outside, consume human resources also many, particularly superelevation, overweight lifting also need to engage the high-level technical staff's on-the-spot guidance of relevant speciality, add that lifting has a big risk, cost is high, long in time limit, so prior art can not efficiently solve the problem that the construction of unsettled splicing large span steel truss is difficult。The present invention is directed to this problem, design the large span steel truss of a kind of splicing construction, the structure that this kind breaks the whole up into parts is split component in a pre-installation, is easy to the tower crane with job site is equipped with and lifts by crane respectively during installation。This splicing construction is simple, assemble easily, it is possible to safe, efficient, high-quality, low cost solve the difficult problem that large span steel truss high-altitude is installed, and Specific construction follows these steps to carry out:
A, first, the steel truss structure finite element stress analysis that qualification mechanism makes is had to report according to industry, in conjunction with tower crane 11 crane capacity that job site is equipped with, determine steel truss merogenesis connection scheme, the on-the-spot long 70m of arm being equipped with tower crane 11 in the present embodiment, the maximum crane capacity of far-end is 3.5 tons, and the maximum crane capacity of near-end is 16 tons, and the maximum crane capacity of two-beam bridge crane 10 is 50 tons；
B, design and make limit lower edge 2 by merogenesis connection scheme, interior lower edge 1, crossed joint 3, web member 5, limit wind up 4, in wind up 6 and clamp 7, it is spliced into large span steel truss by shown in accompanying drawing with the above-mentioned component broken, the interior lower edge 1 that lower edge therein is saved coaxial sequential concatenation by two end edge lower edges 2 and 4 forms, and winding up is winded up by two end edge 4 and 4 saves in coaxial sequential concatenation to wind up and 6 form。Limit lower edge 2 in the present embodiment and limit are winded up 4 isometric, and length is 6 meters, interior lower edge 1 and interior wind up 6 isometric, and length is 6.5 meters。Winding up of spicing forming type is positioned on lower edge, both are vertical at a distance of 6 meters, length is all that 38 meters wind up is arranged in parallel with lower edge, between crossed joint 3 and web member 5 are placed in lower edge and wind up, joints between each component is on the basis connected with clamp 7 and high-strength bolt, then by integrally welded to clamp 7 periphery and joint plane。The component single-piece maximum weight broken in the present embodiment is less than 3 tons, and the tower crane 11 of job site can safe hoisting component to installation site be made to splice completely。
C, utilization install configuration two-beam bridge crane 10 as shown in Figure 2 at the own crane runway that constructs the factory buildings, the two-beam bridge crane 10 of configuration is slided to steel truss to be installed by the present embodiment, the unsettled operating platform of movable type in this, as steel truss installation exercise, measuring the crossbeam of Double-bridge type crane 10 to the vertical dimension on steel truss lower edge base to be installed, during with this size and in conjunction with unloading, the value of steel truss deadweight downwarp determines bracing frame 9 support height size；
D, as shown in Figure 2, by bracing frame 9 vertically-arranged of customization on two-beam bridge crane crossbeam, in the present embodiment, the maximum crane capacity of Double-bridge type crane 10 of configuration is 50 tons, and two-beam bridge crane 10 carries 3 one and moves under every Pin steel truss to be installed along bracing frame 9 alternately；
E, using the tower crane that built Factory Building configures, order lifting is torn the component of zero making open and is made to splice to the unsettled operating platform of described movable type, and splicing is sequentially from bottom to top, first outside and then inside。The first step does lower edge splicing, the present embodiment lower edge long 38 meters only, and first from the limit lower edge 2 of long 6 meters of two ends splicing, the then interior lower edge 1 of splicing wherein 3 joint each length 6.5 meters, the lower edge bracing frame 9 being spliced into supports。Second step is sequential concatenation crossed joint 3 inside from two ends。3rd step is winded up splicing on crossed joint 3, upper chord length is equal with lower chord length, it it is all clean 38 meters long, first wind up 4 from the limit of long 6 meters of two ends splicing, then 6 are winded up in splicing wherein 3 joint each length 6.5 meters, wind up during installation and lower edge parallel spaced-apart, be stitched together by crossed joint 3 between the two。4th step installs the web member 5 being vertically arranged by first outside and then inside order, web member 5 upper and lower side respectively with relative lower edge and docking of winding up；
F, lay down bracing frame 9, make steel truss deformation monitoring；
G, mobile two-beam bridge crane 10, to steel truss to be installed for next Pin, repeat e operation and do the steel truss splicing of position, and the present embodiment does 10 Pin steel truss splicings successively altogether；
H, equidistantly connecting trusses 8 between the adjacent steel truss completing splicing, the trusses 8 laterally built constitutes each adjacent Pin steel truss integrated mounting structure。
The present invention is in order to strengthen the bonding strength of steel truss joints further, all joints are on the basis connected with clamp 7 and high-strength bolt, again by integrally welded to clamp 7 periphery and joint plane, this kind of strengthening connection makes the steel truss of spicing forming type be reliably connected。
Large span steel truss is decomposed design and manufactures by one aspect of the present invention, it is achieved single component volume purpose little, lightweight, it is simple to utilize the conventional tower crane 11 that job site is equipped with to lift by crane respectively。Make full use of the two-beam bridge crane 10 of Factory Building configuration on the other hand, in this, as the aerial unsettled operating platform of movable type splicing large span steel truss。On the basis of above-mentioned two carrying out measures, it is possible to realize the erection of large span steel truss high-altitude easily, efficiently。The invention process is only in built Factory Building top layer construction, concatenation construction do not affect under the interior trim at other each position, mechanical and electric equipment installation, debugging and normal construction, technique implementation process will not produce accident of artificially delaying work, duration is short, recruitment economizes, need not lease other large-scale lifting appliance and related accessories, only this item cumulative cost savings 4,350,000 yuan。Present invention application, except saving the duration, also improves the safety of installation, and its social benefit is much larger than the economic benefit obtained, and unavailable currency is weighed。
The application of the present invention is not limited to the construction of embodiment Large Launch Vehicle right angle setting Factory Building, special industry can also be widely used in and large-scale tall buildings construction that municipal works are built, although application industry, occasion are different, its application effect is similar, all has the features such as quick for installation, the duration is short, safety good, installation cost is low。
Above-described embodiment is only the checking example of the present invention, only with this enforcement further illustrating the concrete technical scheme of the present invention, is not limit the scope of the invention with this。In engineering, every technical scheme slightly converting on the basis of spirit of the invention or modifying, all belongs to the protection domain of application claims。
Claims (3)
1. one kind in the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer, it is characterised in that construction follows these steps to carry out:
A, first, reports according to steel truss structure finite element stress analysis, in conjunction with tower crane (11) the maximum crane capacity that job site is equipped with, it is determined that steel truss merogenesis connection scheme；
B, design and make limit lower edge (2) by merogenesis connection scheme, interior lower edge (1), crossed joint (3), web member (5), while wind up (4), inside wind up (6) and clamp (7), it is spliced into large span steel truss with above-mentioned component, lower edge therein is made up of two end edge lower edges (2) and 2～5 interior lower edges (1) saving coaxial sequential concatenation, wind up and winded up (4) by two end edge and 2～5 save in coaxial sequential concatenation wind up (6) and form, wind up and be positioned on lower edge, both are isometric and arranged in parallel, between crossed joint (3) and web member (5) are placed in lower edge and wind up, joints clamp (7) between each component connects；
C, will slide to steel truss to be installed at the two-beam bridge crane (10) constructing the factory buildings own, the unsettled operating platform of movable type in this, as steel truss installation exercise, measuring the crossbeam vertical dimension to steel truss lower edge base to be installed of two-beam bridge crane (10), during with this size and in conjunction with unloading, the value of steel truss deadweight downwarp determines bracing frame (9) support height size；
D, the bracing frame (9) of customization is placed on two-beam bridge crane (10) crossbeam, two-beam bridge crane (10) carry at least 3 one along and bracing frame (9) alternately, on-demand move under every Pin steel truss to be installed；
E, the situ configuration that is used in constructing the factory buildings conventional tower crane (11), order lifting is torn the component of zero making open and is made to splice to the unsettled operating platform of described movable type, and splicing is sequentially from bottom to top, first outside and then inside；The first step does lower edge splicing, and first from two ends splicing edge lower edge (2), then lower edge (1) in sequential concatenation wherein, the lower edge bracing frame (9) being spliced into supports；Second step is sequential concatenation crossed joint (3) inside from two ends；3rd step is winded up splicing on crossed joint (3), first winds up (4) from two ends splicing edge, then winds up (6) in sequential concatenation wherein, winds up and lower edge parallel spaced-apart pass through crossed joint (3) and be stitched together；4th step installs the web member (5) being vertically arranged by first outside and then inside order, web member (5) upper and lower side respectively with relative lower edge and docking of winding up；
F, lay down bracing frame (9), make steel truss unloading deformation monitoring；
G；Mobile two-beam bridge crane (10), to steel truss to be installed for next Pin, is repeated e operation and is done the steel truss splicing of position；
H, equidistantly connecting trusses (8) between the steel truss completing splicing, the trusses (8) laterally built constitutes adjacent steel truss integrated mounting structure。
2. the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer according to claim 1, it is characterised in that: described limit lower edge (2) and limit wind up (4) isometric, limit for length 6～10 meters, interior lower edge (1) and interior wind up (6) are isometric, limit for length 6～12 meters。
3. the unsettled splicing large span steel truss construction method of extra-high Factory Building top layer according to claim 1, it is characterized in that: with the steel truss tearing zero component spicing forming type open, between each component, joints is on the basis connected with clamp (7) and high-strength bolt, then by integrally welded to clamp (7) periphery and joint plane。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043769.0A CN105696799A (en) | 2016-01-21 | 2016-01-21 | Construction method for splicing large-span steel trusses in a suspending manner at top of extra-high plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043769.0A CN105696799A (en) | 2016-01-21 | 2016-01-21 | Construction method for splicing large-span steel trusses in a suspending manner at top of extra-high plant |
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| CN105696799A true CN105696799A (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610043769.0A Pending CN105696799A (en) | 2016-01-21 | 2016-01-21 | Construction method for splicing large-span steel trusses in a suspending manner at top of extra-high plant |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251872A (en) * | 1991-01-16 | 1992-07-22 | Shimizu Construction Co Ltd | Structure supporting many buildings |
| CN202416882U (en) * | 2011-12-14 | 2012-09-05 | 中国一冶集团有限公司 | Track for slippage installation of large-span pipe truss |
| CN102777047A (en) * | 2012-08-22 | 2012-11-14 | 河北二十冶工程技术有限公司 | Assembling and splicing installation method of large-span tube-truss roof beam |
| CN203008390U (en) * | 2012-12-04 | 2013-06-19 | 中国建筑第八工程局有限公司 | Roof truss installation device |
| CN103498559A (en) * | 2013-10-11 | 2014-01-08 | 四川省第四建筑工程公司 | Splicing movable bridge frame of steel structure industrial factory building and construction method for applying splicing movable bridge frame to roof construction |
-
2016
- 2016-01-21 CN CN201610043769.0A patent/CN105696799A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251872A (en) * | 1991-01-16 | 1992-07-22 | Shimizu Construction Co Ltd | Structure supporting many buildings |
| CN202416882U (en) * | 2011-12-14 | 2012-09-05 | 中国一冶集团有限公司 | Track for slippage installation of large-span pipe truss |
| CN102777047A (en) * | 2012-08-22 | 2012-11-14 | 河北二十冶工程技术有限公司 | Assembling and splicing installation method of large-span tube-truss roof beam |
| CN203008390U (en) * | 2012-12-04 | 2013-06-19 | 中国建筑第八工程局有限公司 | Roof truss installation device |
| CN103498559A (en) * | 2013-10-11 | 2014-01-08 | 四川省第四建筑工程公司 | Splicing movable bridge frame of steel structure industrial factory building and construction method for applying splicing movable bridge frame to roof construction |
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Application publication date: 20160622 |