CN109081235A - A kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern - Google Patents
A kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern Download PDFInfo
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- CN109081235A CN109081235A CN201811158209.5A CN201811158209A CN109081235A CN 109081235 A CN109081235 A CN 109081235A CN 201811158209 A CN201811158209 A CN 201811158209A CN 109081235 A CN109081235 A CN 109081235A
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- lifting
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- steel truss
- beam element
- truss beam
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 260
- 239000010959 steel Substances 0.000 title claims abstract description 260
- 239000000725 suspension Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 34
- 239000003351 stiffener Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 12
- 230000007306 turnover Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008520 organization Effects 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
Abstract
The present invention provides a kind of steel truss beam element hoisting methods applied under single suspension centre lifting pattern, when steel truss beam element lifts by crane installation, assembled steel lifting lug device and steel truss beam element are attached using high-strength bolt, then it is attached by hoisting wirerope or suspender belt with steel lifting lug device using lifting equipment, realizes the lifting connection of steel truss beam element.The high-strength bolt that steel lifting lug and steel truss beam element are released after the completion of the installation of steel truss girder unit bridge location, removes steel lifting lug device, can go to the hoisting construction of next segment steel truss girder week.The lifting connection method realizes the lifting connection design of steel truss beam element under the conditions of single lifting suspension centre, it installs and removes during construction application and is convenient and efficient, it can be used in turn, not only safe and efficient but also economical and practical, it is worth obtaining further promotion and application in the lifting connection design from now on similar to steel truss beam element.
Description
Technical field
The invention belongs to steel truss girder Hoisting Construction Technology fields, and in particular to a kind of applied under single suspension centre lifting pattern
Steel truss beam element hoisting method, the steel truss girder unit bridge location especially suitable for large-span steel structure cable-stayed bridge or suspension bridge integrally rise
Hang installation.
Background technique
For large-span steel structure cable-stayed bridge or the lifting installation design of girder of suspension bridge bridge location, mould is lifted by crane in single suspension centre
Under formula in the lifting connection design of steel truss beam element, generally by directly having welded shackle plate on the rod piece of steel truss beam element
Mode carries out.The lifting connection of setting respective numbers need to be needed on each steel truss girder using the lifting connection type of welding otic placode
Otic placode, material investment is larger, and welding workload is big, and cost is also relatively high；It simultaneously inevitably can be to steel in otic placode welding process
Structure plate surface generates certain damage；In addition, steel truss beam element needs to cut the welding otic placode added after being installed
It removes, it is not only time-consuming and laborious, increase the security risk of construction operation, and will produce to steel structure surface during otic placode is cut off
Raw secondary damage.Therefore, whether from the control of construction cost, the security reliability of construction organization, or from steel construction itself
Structure secure context consider, using welding otic placode all there is various unfavorable factors in all respects.
Summary of the invention
The purpose of the present invention one is to provide a kind of lifting lug device that reuse can be had enough to meet the need during the lifting of single suspension centre；
Purpose is second is that reduce the workload of welding otic placode during single suspension centre lifting；Purpose is third is that being easily installed and removing.
For this purpose, the present invention provides a kind of steel truss beam element hoisting methods applied under single suspension centre lifting pattern, including
Following steps:
Step 1 assembles assembled steel lifting lug device；
Step 2 selects the position of multiple installation assembled steel lifting lug devices on the crossbeam or stringer of steel truss beam element,
Assembled steel lifting lug device is fixedly mounted on steel truss beam element by high-strength bolt；
Step 3, above transport lifting appliance to steel truss beam element, lifting appliance by more hoisting wireropes, suspender belt or
Platform sling is connect with assembled steel lifting lug device, the quantity of hoisting wirerope, suspender belt or platform sling and the number of assembled steel lifting lug device
Measure identical, position where assembled steel lifting lug device is lifting connection suspension centre, and when lifting, all lifting connection suspension centres pass through
Hoisting wirerope, suspender belt or platform sling converge to lifting appliance list suspension centre, and lifting appliance passes through single suspension centre balancing lifting steel truss girder list
Member carries out installation；
Step 4 after the installation for completing steel truss beam element, releases high-strength bolt, removes assembled steel lifting lug device,
The turnover of assembled steel lifting lug device is recycled and reused for the hoisting construction of the steel truss beam element of next segment.
Further, the assembled steel lifting lug device is made of pressure-bearing connecting plate, otic placode, stiffening plate and stiffener, institute
The pressure-bearing connecting plate stated is rectangular steel plates component, and otic placode is oblique to be vertically welded on pressure-bearing connecting plate, at the center Ban Ding of otic placode
Hole for hoist is opened up, the stiffening plate there are two pieces, and two pieces of stiffening plates are respectively welded presss from both sides in two plate faces of otic placode and by otic placode
It holds in centre, and the center of stiffening plate offers hole for hoist identical with otic placode hole for hoist specification, the stiffener has several
Block, several pieces of stiffeners are each perpendicular to the angle that otic placode is welded on pressure-bearing connecting plate and otic placode.
Further, the stiffener uses the steel plateelement of the Q345 material of thickness 12mm, and stiffener shares four pieces, and two pieces are
One group sets the angle for being welded on pressure-bearing connecting plate and otic placode opposite to each other.
Further, the otic placode and stiffening plate are all made of the steel plateelement of Q345 material, and otic placode thickness 30mm, stiffening plate is straight
The circular steel plate of diameter φ 220mm, thickness 10mm with the perforative lifting bore dia in hole are φ 100mm on otic placode and stiffening plate.
Further, the size of the pressure-bearing connecting plate is 500 × 400mm, and with a thickness of 25mm, material is the rectangle of Q345
Steel plate offers several in the rectangular steel plates for connecting pressure-bearing connecting plate in the bolt hole on steel truss beam element.
Further, the bolt hole that 14 diameters are Φ 26mm is offered on the pressure-bearing connecting plate, the pressure-bearing of rectangle connects
The middle line that fishplate bar is intersected vertically is divided into four blocks, is wherein respectively equipped with 3 bolts hole in two where otic placode block,
Remaining two blocks are respectively equipped with 4 bolts hole.
Further, the position of the assembled steel lifting lug device of selection installation described in step 2, is divided into two kinds of situations, if steel
Trusses unit only has crossbeam, then arbitrarily chooses multiple lifting connection suspension centres on crossbeam, make lifting appliance in lifting steel truss girder list
It can balancing lifting and movement when first；If steel truss beam element is made of crossbeam and stringer square crossing, square crossing point is selected to make
Suspension centre is connected for lifting, assembled steel lifting lug device is mounted on lifting connection suspension centre, makes lifting appliance in lifting steel truss girder list
It can balancing lifting and movement when first.
Further, the steel truss beam element is indulged by 3 parallel to each other and evenly spaced crossbeams and 2 are parallel to each other
Beam composition, longitudinal and cross beam square crossing form 6 crosspoints, 4 crosspoints that the crossbeam and stringer for choosing 2 edge are formed
As lifting connection suspension centre, the centers of 4 lifting connection suspension centres are single suspension centre of lifting appliance, lift by crane at each and connect suspension centre
One assembled steel lifting lug device of upper installation, between the otic placode of each assembled steel lifting lug device and corresponding pressure-bearing connecting plate
Weld seam be directed to single suspension centre at center.
Further, when lifting by crane steel truss girder unit, U-shaped buckle is first stuck in otic placode two sides, pin shaft is then sequentially passed through into U
Type buckle, stiffening plate and otic placode and fixation, hoisting wirerope one end pass through U-shaped buckle, and the other end is connected to the list of lifting appliance
Suspension centre.
Beneficial effects of the present invention: this steel truss beam element being applied under single suspension centre lifting pattern provided by the invention rises
Method is hung, is applied using the bridge location lifting installation that assembled steel lifting lug device can not only safely and efficiently complete steel truss beam element
Work, while the turnover that can be realized steel lifting lug device is reused, and construction cost is greatly reduced；The assembled of high-strength bolt is set
Meter keeps the installation of steel lifting lug and Demolition Construction convenient and efficient, small to Steel truss structure damage, and pressure-bearing connecting plate also enhances steel truss
The lifting connection safety of beam has maximumlly ensured the structure safety of steel truss beam element.In conclusion steel truss girder assembled steel
The design of lifting lug device structure is simple light and handy, and constructing operation is convenient and efficient, and investment is small, at low cost；Connection is safe and reliable, construction safety
Efficiently.By the practical application of engineering, good construction effect is achieved, creates good economic benefit for project and enterprise
And social benefit, it is worth obtaining further promotion and application in designing similar to steel truss beam element lifting connection construction from now on.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is steel truss beam element lifting schematic diagram.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural schematic diagram of assembled steel lifting lug device.
Fig. 4 is the front view of assembled steel lifting lug device.
Fig. 5 is the side view of assembled steel lifting lug device.
Fig. 6 is the schematic diagram of steel truss beam element installation assembled steel lifting lug device.
Fig. 7 is the direction across bridge schematic diagram that assembled steel lifting lug device is mounted on steel truss beam element.
Fig. 8 is the vertical bridge that is mounted on steel truss beam element of assembled steel lifting lug device to schematic diagram.
Description of symbols:
1. assembled steel lifting lug device；2. steel truss beam element；3. high-strength bolt；4. single suspension centre；
101. pressure-bearing connecting plate；102. otic placode；103. stiffening plate；104. stiffener；105. bolt hole；
201. crossbeam；202. stringer.
Specific embodiment
Embodiment 1:
A kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern is present embodiments provided, including as follows
Step:
Step 1 assembles assembled steel lifting lug device 1；
Step 2, as shown in fig. 6, selecting multiple installation assembled steel lifting lugs on the crossbeam or stringer of steel truss beam element 2
Assembled steel lifting lug device 1 is fixedly mounted on steel truss beam element 2 by the position of device 1 by high-strength bolt 3；
Step 3, transport lifting appliance to 2 top of steel truss beam element, lifting appliance pass through more hoisting wireropes, suspender belts
Or platform sling is connect with assembled steel lifting lug device 1, hoisting wirerope, the quantity of suspender belt or platform sling and assembled steel lifting lug device 1
Quantity it is identical, the position where assembled steel lifting lug device 1 is lifting connection suspension centre, and when lifting, all lifting connections are hung
Point converges to lifting appliance list suspension centre 4 by hoisting wirerope, suspender belt or platform sling, and lifting appliance passes through 4 balancing lifting of single suspension centre
Steel truss beam element 2 carries out installation；
Step 4 after the installation for completing steel truss beam element 2, releases high-strength bolt 3, removes assembled steel lifting lug device
1, assembled steel lifting lug device 1 is had enough to meet the need to the hoisting construction for being recycled and reused for the steel truss beam element 2 of next segment.Specifically, steel truss
After the completion of beam element bridge location installation, high-strength bolt is released using Electric torque wrench in bridge location, removes steel lifting lug device, into
The lifting construction of the next segment steel truss beam element of row.
Specifically, assembled steel lifting lug device 1 carries out bolt connection by high-strength bolt 3 with steel truss beam element 2, i.e., will rise
The lifting connector such as hoisting wirerope, suspender belt or platform sling that heavy equipment is divided into and assembled steel lifting lug device 1 are attached, can
Complete the lifting of steel truss beam element 2；It, can be convenient and efficient by releasing high-strength bolt 3 after the completion of 2 installation of steel truss beam element
The dismounting assembled steel lifting lug device 1, be recycled and reused for the steel truss beam element hoisting construction of next segment, reach and be used in turn
Purpose.
1 simple structure of assembled steel lifting lug device is light and handy, and peace can be completed by the way of artificial and tear open, using high-strength bolt
Assembly connection mode make the installation of assembled steel lifting lug device 1 and remove it is all more convenient quick, by pressure-bearing connecting plate with
Steel girder member bar cell surface is attached, and is reduced the concentration of steel structural rod piece unit by stress effect, is improved steel truss girder connection
Lift by crane the safety of structure of connection.In terms of construction economy, full-bridge puts into 8 sets of assembled steel lifting lug devices 1 altogether, meets
The turnover construction organization of full-bridge can be realized in the use of 2 segment steel truss beam elements, and material investment is small, at low cost.From construction group
From the point of view of knitting aspect, the installation and dismounting of steel lifting lug are all more convenient, manually can be achieved with installing after the completion of steel truss girder is assembled, steel truss
Dismounting is accomplished manually after the completion of beam installation.Analyzed in terms of safety of structure, using height tether connect by the way of and steel truss
It is small to main body steel construction surface damage during peace is torn open without being welded between beam element, while using pressure-bearing connecting plate
Setting, avoid structure concentrate stress, maximumlly ensure that lifting connection lifting lug safety and steel construction stress safety
Property.
When practice of construction, after the completion of steel truss beam element spelling, 4 sets of assembled steel lifting lug devices 1 are manually placed in steel
Then the high-strength of assembled steel lifting lug device 1 and steel truss beam element 2 is completed using Electric torque wrench in trusses design of lifting points position
Bolt, which is applied, to be screwed to connect, and steel lifting lug pays attention to direction (the otic placode direction 4 of 4 sets of steel lifting lugs of 1 otic placode of assembled steel lifting lug device when installing
The center intersection point of a suspension centre), it is sequentially completed the installation of single 4 sets of steel lifting lug devices of steel truss beam element.By lifting equipment run to
Above steel truss girder position, 4 lifting connecting steel wire ropes that hand fit divides into suspension centre respectively with 4 steel lifting lugs on steel truss girder
The lifting connection of steel truss girder is completed in device connection.Slow elevator completes the lifting of steel truss beam element, then through water
Bridge location installation is carried out after flat transport.
Embodiment 2:
As shown in Fig. 3, Fig. 4 and Fig. 5, on the basis of embodiment 1, the assembled steel lifting lug device 1 is connected by pressure-bearing
Plate 101, otic placode 102, stiffening plate 103 and stiffener 104 form, and the pressure-bearing connecting plate 101 is rectangular steel plates component, otic placode
102 it is oblique be vertically welded on pressure-bearing connecting plate 101, hole for hoist, the stiffening plate are opened up at the center Ban Ding of otic placode 102
103 have two pieces, and two pieces of stiffening plates 103 are respectively welded in being clamped in centre in two plate faces of otic placode 102 and by otic placode 102, and
The center of stiffening plate 103 offers hole for hoist identical with 102 hole for hoist specification of otic placode, and the stiffener 104 has several pieces,
Several pieces of stiffeners 104 are each perpendicular to the angle that otic placode 102 is welded on pressure-bearing connecting plate 101 Yu otic placode 102.
Further, the weld seam of otic placode 102 and pressure-bearing connecting plate 101 is in oblique, specifically, weld seam and rectangular steel plates component
Four sides intersection, it is preferable that otic placode 102 is vertically welded on pressure-bearing connecting plate 101 along the diagonal line of rectangular steel plates component, such as scheme
Shown in 3 and Fig. 6.
It should be strongly noted that otic placode 102 opens up hole for hoist in middle and upper part, stiffening plate 103 uses circular steel plate, in
Portion opens up the hole for hoist with otic placode 102 with diameter, and stiffening plate 103 is welded in 102 two sides of otic placode, and totally 2, stiffening plate 103 and ear
102 hole for hoist of plate is penetrated through with hole.Stiffener 104 is added using steel plate material for the reinforcing of otic placode 102 and pressure-bearing connecting plate 101
It is equal to, 101 top surface of pressure-bearing connecting plate, stiffener 104 and otic placode 102 and pressure-bearing connecting plate 101 that strength plate 104 is set to 102 side of otic placode
It is connected using fillet weld seam, single steel lifting lug device that covers sets 4 stiffeners altogether.
Assembled steel lifting lug device 1 welds form using steel plate group, and simple structure is light and handy, light-weight, easy to operate；Using height
Strength bolt and steel truss girder carry out bolt connection, and installation is more quick with dismounting；It can be used in turn in steel truss girder hoisting construction,
Dismounting manually can be realized in steel truss beam element after being installed, while can have enough to meet the need and be recycled and reused for the lifting of next segment steel truss girder and apply
Work, full-bridge input amount is small, can reduce construction cost；Compared to the connection type of welding otic placode, the bolt of steel lifting lug device connects
It is small to the damage of steel truss girder steel construction unit to connect mode, does not generate welding and cut off operation, construction safety is efficient；Pass through large area
The setting of pressure-bearing connecting plate increases the joint face contact area of lifting lug Yu steel truss girder plate unit, reduces the part of structure
Stress effect, lifting connection is more safe and reliable, more tends to safety and stability to Steel truss structure；Pass through steel lifting lug device
The oblique of otic placode is arranged, as shown in fig. 6, making otic placode direction be directed to the projection centre of single suspension centre, for lifting lug after lifting
Stress more tends to safety and stablizes.
Embodiment 3:
Preferably, steel plateelement of the stiffener 104 using the Q345 material of thickness 12mm, stiffener 104 share four pieces,
Two pieces set the angle for being welded on pressure-bearing connecting plate 101 Yu otic placode 102 opposite to each other for one group.The otic placode 102 and stiffening plate 103
It is all made of the steel plateelement of Q345 material, 102 thickness 30mm of otic placode, stiffening plate 103 is the circular steel plate of diameter phi 220mm, thickness 10mm,
On otic placode 102 and stiffening plate 103 with the perforative lifting bore dia in hole be φ 100mm.The size of the pressure-bearing connecting plate 101 is
500 × 400mm, with a thickness of 25mm, material is the rectangular steel plates of Q345, several are offered in the rectangular steel plates for connecting
Pressure-bearing connecting plate 101 is in the bolt hole 105 on steel truss beam element 2.
Embodiment 4:
As shown in figure 3, the bolt hole 105 that 14 diameters are Φ 26mm is offered on the pressure-bearing connecting plate 101, rectangle
The middle line that pressure-bearing connecting plate 101 is intersected vertically is divided into four blocks, wherein sets respectively in two blocks where otic placode 102
There are 3 bolts hole 105, remaining two blocks are respectively equipped with 4 bolts hole 105.The hole location and steel truss girder list of all bolts hole 105
The reserved bolt hole in first 2 top surfaces match consistent in quantity, aperture and pitch of holes, and high-strength bolt is using 8.8 grades of M24 bolts.
Embodiment 5:
Further, the position of the assembled steel lifting lug device 1 of selection installation described in step 2, is divided into two kinds of situations, if
Steel truss beam element 2 only has crossbeam 201, then chooses multiple lifting connection suspension centres, arbitrarily on crossbeam 201 in order to ensure lifting safety
Property, can the more powerful position of structure preferably on crossbeam 201, balance lifting appliance can when lifting by crane steel truss girder unit 2
It hangs and moves；If steel truss beam element 2 is made of crossbeam 201 and 202 square crossing of stringer, select square crossing point as lifting
Suspension centre is connected, as shown in fig. 6, assembled steel lifting lug device 1 is mounted on lifting connection suspension centre, makes lifting appliance in lifting steel truss
It can balancing lifting and movement when beam element 2.
Embodiment 6:
On the basis of embodiment 5, as shown in Fig. 2 and Fig. 1, the steel truss beam element 2 by 3 it is parallel to each other and uniformly between
Every crossbeam 201 and 2 piece stringer 202 parallel to each other form, stringer 202 and 201 square crossing of crossbeam form 6 crosspoints,
4 crosspoints that the crossbeam 201 and stringer 202 for choosing 2 edge are formed connect suspension centre as lifting connection suspension centre, 4 liftings
Center be lifting appliance single suspension centre 4, each lift by crane connection suspension centre on install an assembled steel lifting lug device 1, often
Weld seam between the otic placode 102 of one assembled steel lifting lug device 1 and corresponding pressure-bearing connecting plate 101 is directed to singly hanging for center
Point 4.
Setting for 4 sets of steel lifting lug devices of steel truss beam element, when otic placode and pressure-bearing connecting plate weld, otic placode with hold
The axis for pressing connecting plate is in oblique form, and otic placode axis direction is directed to the center point of intersection of 4 lifting lugs, passes through steel lifting lug device
The oblique of otic placode is arranged, so that otic placode direction is directed to the projection centre of single suspension centre, the stress after lifting for lifting lug is more tended to
Safe and stable, specific oblique angles are related with the design of lifting points position on steel truss beam element.
The design of steel truss girder hoisting point position, the list that hanging device uses suspender to divide into are carried out according to steel truss girder tectonic sieving feature
Suspension centre lifting pattern is arranged 4 liftings on steel truss girder and connects suspension centre, and therefore, 4 sets of steel lifting lugs being arranged on steel truss girder are in otic placode
In the design of pressure-bearing connecting plate, it need to be directed toward jointly in 4 suspension centres of steel truss girder in conjunction with the design position of 4 suspension centres with otic placode plate face
Based on the intersection point of the heart, the oblique angle of each otic placode and pressure-bearing connecting plate in 4 sets of steel lifting lugs is calculated, completes the structure of steel lifting lug
Design.When practice of construction, after the completion of steel truss beam element spelling, 4 sets of steel lifting lug devices is manually placed in steel truss girder suspension centre and are set
Position is counted, steel lifting lug device is then completed using Electric torque wrench and is connect with the high-strength bolt screwing of steel truss beam element, steel is hung
Ear pays attention to the direction (the center intersection point that the otic placode of 4 sets of steel lifting lugs is directed toward 4 suspension centres) of steel lifting lug device otic placode when installing, successively complete
At the installation of single 4 sets of steel lifting lug devices of steel truss beam element.Lifting equipment is run to steel truss girder position, hand fit will
4 lifting connecting steel wire ropes that suspension centre is divided into are connect with 4 steel lifting lug devices on steel truss girder respectively, complete the lifting of steel truss girder
Connection.Slow elevator completes the lifting of steel truss beam element, and bridge location installation, such as Fig. 7 are then carried out after horizontal transport
With shown in Fig. 8, be respectively direction across bridge and vertical bridge to scheme of installation.
Embodiment 7:
On the basis of embodiment 6, preferably, U-shaped buckle is first stuck in 102 liang of otic placode when lifting steel truss girder unit 2
Then pin shaft is sequentially passed through U-shaped buckle, stiffening plate 103 and otic placode 102 and fixed by side, hoisting wirerope one end passes through U-shaped card
Button, the other end are connected to single suspension centre of lifting appliance.
In steel truss girder unit bridge location installation organization design, for of steel truss beam element under single suspension centre lifting pattern
Connection design is hung, the bridge location lifting installation of steel truss beam element can not only be safely and efficiently completed using assembled steel lifting lug device
Construction, while the turnover that can be realized steel lifting lug device is reused, and construction cost is greatly reduced；The assembled of high-strength bolt
Design keeps the installation of steel lifting lug and Demolition Construction convenient and efficient, small to Steel truss structure damage, and pressure-bearing connecting plate also enhances steel
The lifting connection safety of trusses has maximumlly ensured the structure safety of steel truss beam element.In conclusion steel truss girder assembled
The design of steel lifting lug device structure is simple light and handy, and constructing operation is convenient and efficient, and investment is small, at low cost；Connection is safe and reliable, construction peace
Overall height effect.By the practical application of engineering, good construction effect is achieved, creates good economic effect for project and enterprise
Benefit and social benefit are worth further being promoted and being answered in designing similar to steel truss beam element lifting connection construction from now on
With.
In conclusion the steel truss beam element hoisting method provided by the invention being applied under single suspension centre lifting pattern, uses
The assembled steel lifting lug device of high-strength bolt matching connection, structure design is simple light and handy, and peace is torn open easy to operate, can complete
The lifting connection operation of steel truss beam element, while recycling can be had enough to meet the need in the construction process, construction economy is higher.It compares
In the connection type of welding lifting lug, fabricated steel lifting lug device is small to steel construction damage, and lifting connection safety is high, and construction was both
It is safe and efficient and economical and practical, there is good construction application prospect, be worth applying from now on similar to the lifting connection of steel truss beam element
Further promotion and application are obtained in work design.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, do not describe one by one here.
Claims (9)
1. a kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern, which comprises the steps of:
Step 1 assembles assembled steel lifting lug device (1)；
Step 2 selects the position of multiple installations assembled steel lifting lug device (1) on the crossbeam or stringer of steel truss beam element (2)
It sets, assembled steel lifting lug device (1) is fixedly mounted on steel truss beam element (2) by high-strength bolt (3)；
Step 3, transport lifting appliance to above steel truss beam element (2), lifting appliance by more hoisting wireropes, suspender belt or
Platform sling is connect with assembled steel lifting lug device (1), hoisting wirerope, the quantity of suspender belt or platform sling and assembled steel lifting lug device
(1) quantity is identical, and the position where assembled steel lifting lug device (1) is lifting connection suspension centre, and when lifting, all liftings connect
It connects suspension centre and lifting appliance list suspension centre (4) is converged to by hoisting wirerope, suspender belt or platform sling, lifting appliance passes through single suspension centre (4)
Balancing lifting steel truss beam element (2) carries out installation；
Step 4 after the installation for completing steel truss beam element (2), releases high-strength bolt (3), removes assembled steel lifting lug device
(1), assembled steel lifting lug device (1) turnover is recycled and reused for the hoisting construction of the steel truss beam element (2) of next segment.
2. the steel truss beam element hoisting method as described in claim 1 being applied under single suspension centre lifting pattern, it is characterised in that:
The assembled steel lifting lug device (1) is by pressure-bearing connecting plate (101), otic placode (102), stiffening plate (103) and stiffener (104) group
At the pressure-bearing connecting plate (101) is rectangular steel plates component, and otic placode (102) is oblique to be vertically welded in pressure-bearing connecting plate (101)
On, hole for hoist is opened up at the center Ban Ding of otic placode (102), the stiffening plate (103) there are two pieces, two pieces of stiffening plates (103) point
It is not welded in two plate faces of otic placode (102) and otic placode (102) is clamped in centre, and the center of stiffening plate (103) opens up
There is hole for hoist identical with otic placode (102) hole for hoist specification, the stiffener (104) there are several pieces, several pieces of stiffeners
(104) it is each perpendicular to the angle that otic placode (102) is welded on pressure-bearing connecting plate (101) Yu otic placode (102).
3. the steel truss beam element hoisting method as claimed in claim 2 being applied under single suspension centre lifting pattern, it is characterised in that:
The stiffener (104) uses the steel plateelement of the Q345 material of thickness 12mm, and stiffener (104) shares four pieces, and two pieces are one group of phase
It carries on the back and sets the angle for being welded on pressure-bearing connecting plate (101) Yu otic placode (102).
4. the steel truss beam element hoisting method as claimed in claim 2 being applied under single suspension centre lifting pattern, it is characterised in that:
The otic placode (102) and stiffening plate (103) are all made of the steel plateelement of Q345 material, otic placode (102) thickness 30mm, stiffening plate (103)
For the circular steel plate of diameter phi 220mm, thickness 10mm, it is with the perforative lifting bore dia in hole on otic placode (102) and stiffening plate (103)
φ100mm。
5. the steel truss beam element hoisting method as claimed in claim 2 being applied under single suspension centre lifting pattern, it is characterised in that:
The size of the pressure-bearing connecting plate (101) is 500 × 400mm, and with a thickness of 25mm, material is the rectangular steel plates of Q345, the square
Several are offered on shape steel plate for connecting pressure-bearing connecting plate (101) in the bolt hole (105) on steel truss beam element (2).
6. the steel truss beam element hoisting method as claimed in claim 5 being applied under single suspension centre lifting pattern, it is characterised in that:
The bolt hole (105) that 14 diameters are Φ 26mm, the pressure-bearing connecting plate of rectangle are offered on the pressure-bearing connecting plate (101)
(101) middle line to be intersected vertically is divided into four blocks, is wherein respectively equipped with 3 in two blocks where otic placode (102)
Bolt hole (105), remaining two blocks are respectively equipped with 4 bolts hole (105).
7. the steel truss beam element hoisting method as described in claim 1 being applied under single suspension centre lifting pattern, it is characterised in that:
The position of selection installation assembled steel lifting lug device (1), is divided into two kinds of situations described in step 2, if steel truss beam element (2) is only
There are crossbeam (201), then it is any on crossbeam (201) to choose multiple liftings connection suspension centres, make lifting appliance in lifting steel truss girder list
It can balancing lifting and movement when first (2)；If steel truss beam element (2) is made of crossbeam (201) and stringer (202) square crossing,
It selects square crossing point to connect suspension centre as lifting, assembled steel lifting lug device (1) is mounted on lifting connection suspension centre, makes to lift by crane
Equipment can balancing lifting and movement when lifting by crane steel truss girder unit (2).
8. the steel truss beam element hoisting method under single suspension centre lifting pattern the use as claimed in claim 7, it is characterised in that:
The steel truss beam element (2) stringer (202) group parallel to each other by 3 parallel to each other and evenly spaced crossbeams (201) and 2
At stringer (202) and crossbeam (201) square crossing form 6 crosspoints, choose the crossbeam (201) and stringer of 2 edge
(202) as lifting connection suspension centre, the center of 4 lifting connection suspension centres is single suspension centre of lifting appliance in 4 crosspoints formed
(4), it is lifted by crane at each and an assembled steel lifting lug device (1), each assembled steel lifting lug device is installed on connection suspension centre
(1) weld seam between otic placode (102) and corresponding pressure-bearing connecting plate (101) is directed to single suspension centre (4) at center.
9. the steel truss beam element hoisting method as claimed in claim 8 being applied under single suspension centre lifting pattern, it is characterised in that:
When lifting by crane steel truss girder unit (2), U-shaped buckle is first stuck in otic placode (102) two sides, pin shaft is then sequentially passed through into U-shaped buckle, is added
Strong plate (103) and otic placode (102) are simultaneously fixed, and hoisting wirerope one end passes through U-shaped buckle, and the other end is connected to the list of lifting appliance
Suspension centre.
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| CN201811158209.5A CN109081235A (en) | 2018-09-30 | 2018-09-30 | A kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern |
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| CN201811158209.5A CN109081235A (en) | 2018-09-30 | 2018-09-30 | A kind of steel truss beam element hoisting method applied under single suspension centre lifting pattern |
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