CN101435276A - Hydraulic lifting and positioning device for steel beam at top of silo structure and construction method thereof - Google Patents
Hydraulic lifting and positioning device for steel beam at top of silo structure and construction method thereof Download PDFInfo
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- CN101435276A CN101435276A CNA2008103063581A CN200810306358A CN101435276A CN 101435276 A CN101435276 A CN 101435276A CN A2008103063581 A CNA2008103063581 A CN A2008103063581A CN 200810306358 A CN200810306358 A CN 200810306358A CN 101435276 A CN101435276 A CN 101435276A
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Abstract
The utility model provides a device of taking one's place is promoted to silo structure storehouse top girder steel hydraulic pressure, includes slipform device and hydraulic lifting system, its characterized in that: a slip form lifting frame of the slip form device is connected with an inner side template, an outer side template and an operation platform, a cross brace is connected between two lifting frame stand columns, a steel beam supporting frame is further connected onto the slip form lifting frame, the steel beam supporting frame and a cabin roof steel beam are connected into a lifting whole, a hydraulic lifting system is used as a lifting power system of the lifting whole, and the hydraulic lifting system is composed of a hydraulic jack, a supporting rod, a hydraulic control platform and an oil way. The invention can quickly, conveniently, reliably and safely complete the construction task of installing the steel beam on the top of the silo, does not need large-scale hoisting equipment, and does not have the problems of difficult positioning and low efficiency of the large-scale hoisting equipment. The lifting device can be widely applied to lifting and positioning construction of the steel framework at the top of the silo-shaped structure.
Description
Technical field
The present invention relates to a kind of lifting device in place and mounting method thereof of steel frame, the lifting device in place and the mounting method thereof of particularly a kind of large-scale silo shape structure top girder steel.
Background technology
The structure of large-scale silo structure type have a variety of, the for example large-scale rubble storehouse in cement producing line, feed proportioning station, raw material silo, clinker warehouse, cement ingredient station, cement storage warehouse etc., these structure structure types are similar, be concrete silo structure, the silo top structure generally is to be assembled into top, storehouse steel structure framework by trussed-beam steel beam or welded H section steel beam and secondary beam, repave pressed tile on the steel structure framework, and then build the steel concrete surface layer.The diameter of these silo structure and highly often be tens meters, every storehouse is pushed up single Pin girder steel and often is several tons of weight, and silo periphery place is narrow and small.According to conventional job practices, intact the wall concreting of silo storehouse, and after the sliding mode system complete removal finished, can carry out the lifting operation of top, storehouse girder steel, the job practices of this routine exists many weak points:
1, the girder steel lifting needs to use large-scale hanging device.
Because these silo diameters greatly, highly high, single Pin girder steel weight is big, take all factors into consideration factors such as lifting capacity, setting height(from bottom), operating radius, often need carry out the unit lifting, even need the above mobile cranes of two 200t to carry out two-shipper to lift with a mobile crane more than the 200t.Because silo geographical position of living in is remote mostly, the large-tonnage crane gear seldom, the operation of marching into the arena simultaneously of two mobile cranes is difficult to coordinate and operation, the duration can't guarantee.
2, large-scale hanging device difficulty in place.
When top, silo storehouse possesses the steel structure hoisting condition, the most of construction of the monomer engineering of silo periphery finishes, this moment, the place was narrow and small, builder's road is difficult to walk, hanging device difficulty in place, and in girder steel lifting uphill process, the structure of periphery have very big influence to the lifting route, often need the crane gear secondary in place, lifting again, inefficiency.
3, top, storehouse steel member installation exercise is dangerous big.
When top, storehouse steel member is installed sliding mode system complete removal finish, steel member installation exercise face is the wide barrel of not enough 400mm, construction is dangerous big, hidden danger is more.
4, the expense height of girder steel lifting.
Because geographical position of living in, cement plant, be difficult to lease the hanging device of required usefulness near the periphery, all want place remote to allocate, large-scale hanging device advance fee for showing up and rental charge is very high.
Along with the production-scale increasing of owner, the raising of daily output standard, the existing problem of constructing at present will highlight all the more in engineering from now on.
Summary of the invention
In order to overcome the deficiency of existing method, the invention provides a kind of silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus and job practices thereof, solve conventional method owing to need to adopt large-scale hanging device, so cause the technical problem of using inconvenience and duration to guarantee, and solve the dangerous big and high problem of cost of use of difficulty in place, inefficiency, operation that large-scale hanging device caused that adopts.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, comprise sliding form apparatus and hydraulic lifting system, it is characterized in that: the sliding formwork hoisting frame of above-mentioned sliding form apparatus is connected with operating platform with the medial and lateral template, connect bridging between the two hoisting frame columns, also connect the girder steel bracing frame on the sliding formwork hoisting frame, it is whole that girder steel bracing frame and top, storehouse girder steel are linked to be lifting, by the lifting dynamical system of hydraulic lifting system as above-mentioned lifting integral body, hydraulic lifting system is made up of hydraulic jack, support bar, hydraulic control panel and oil circuit.
Described sliding form apparatus connects into out font sliding formwork hoisting frame by two file hoisting frame columns and two horizontally-arranged hoisting frame crossbeams, the fixedly connected a pair of tripod of difference on two hoisting frame columns, attended operation platform and hang scaffold on the tripod, below the hoisting frame crossbeam, the inboard of two hoisting frame columns fixing medial and lateral template respectively, the back side of medial and lateral template is connected with upper, middle and lower three road closed type enclosures, and the per pass enclosure is all fixedlyed connected with the hoisting frame column by enclosing the purlin rest; Fixedly connected with the hydraulic jack in the hydraulic lifting system in the middle part of described hoisting frame crossbeam.
Above-mentioned girder steel bracing frame includes four horizontal channel-section steels, surrounds square shape, and the downside of four horizontal channel-section steels is connected with four supporting legs, is connected with bracing piece between four supporting legs and four horizontal channel-section steels, and the bottom of four supporting legs is fixedly connected with steel plate.
The job practices of a kind of silo structure structure storehouse top steel beam hydraulic hoisting and positioning is characterized in that adopting silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, and its construction sequence is:
Step 1: make the assembling sliding mode system.
Step 2: girder steel is installed on sliding mode system, is fulcrum with the sliding formwork hoisting frame of both sides, girder steel installation site, and the girder steel bracing frame is fixedly connected on the sliding formwork hoisting frame, girder steel is fixedly attached on the girder steel bracing frame again.
Step 3: just the sliding stage, top, storehouse girder steel is installed in the template of medial and lateral, and concreting does not collapse after the concrete depanning, again not by the Form board tape time-out, carries out just sliding the liter.
Step 4: the sliding liter stage, whenever build a layer concrete, LIFT of enhancing tube chamber structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, continuous placing promotes continuously successively.
Step 5: finish sliding the liter stage, when rising to design elevation, stop sliding the liter when sliding.
Step 6: carry out top, storehouse girder steel and install.
Above-mentioned steps six may further comprise the steps:
A, at wall place, storehouse, girder steel notch both sides, top, storehouse a pre-buried pre-embedded steel slab respectively.
B, dismounting sliding formwork platform radial pattern horizontal support, notch place inner platform and inner side template, enclosure, welded steel beam is laid bracing frame on the pre-embedded steel slab of top, storehouse.
C, utilize Chain block that girder steel is mentioned, and temporary fixed.
D, original girder steel bracing frame is removed.
E, girder steel is dropped in the notch with Chain block, and in place fixing.
Above-mentioned girder steel bracing frame includes four horizontal channel-section steels, surrounds square shape, and the downside of four horizontal channel-section steels is connected with four supporting legs, is connected with bracing piece between four supporting legs and four horizontal channel-section steels, and the bottom of four supporting legs is fixedly connected with steel plate.
Above-mentioned girder steel is laid bracing frame and is included four horizontal channel-section steels, surround square shape, the downside of four horizontal channel-section steels is connected with four supporting legs, article four, be connected with bracing piece between supporting leg and four horizontal channel-section steels, surround square shape horizontal channel-section steel each side be symmetrically welded with an oblique steel pipe, two oblique steel pipe symmetry opposite tilts and close gradually from bottom to top, the top of two oblique steel pipes is fixedly connected by a horizontal steel pipe, and the bottom of the bottom of four supporting legs and two oblique steel pipes is fixedly connected with steel plate.
Beneficial effect of the present invention is as follows:
(1), the duration is guaranteed: by silo sliding formwork Hoisting System top, storehouse girder steel is brought to the height that needs installation and carries out installation in position, whole slding form operation and girder steel are installed needn't rely on large-scale hanging device fully, so the duration holds good security.
(2), the construction safety coefficient strengthens: in girder steel installation in position process, the constructor is construction operation on former sliding mode system operating platform all, and the security protection facility puts in place, and construction safety is guaranteed.
(3), reduced construction cost, saved operating expenses.For example, according to routine work, eight cement storage silo storehouses large-scale hanging device of top girder steel lifting operation will pass in and out a secondary at least, adds that assembled on site boom and normal lifting operation and job site cooperate expense, and expense amounts to 51.8 ten thousand yuan.And take sliding formwork band girder steel technical measures of the present invention, only increase by 70,000 yuan of support bar, hoisting frame expenses, but saved the rental charge of large-scale hanging device, but 44.8 ten thousand yuan of create beneficial results.
The present invention can finish the construction task that top, silo storehouse girder steel is installed fast, conveniently, reliably, safely, need not use large-scale hanging device, and the problem that does not have large-scale hanging device difficulty in place, inefficiency occurs.Can be widely used in lifting, the construction in place of silo shape structure top steel frame.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a sliding formwork assembling schematic top plan view.
Fig. 2 is the A-A generalized section of Fig. 1.
Fig. 3 is the syndeton schematic diagram of sliding formwork hoisting frame and tripod.
Fig. 4 is the B-B generalized section of Fig. 3.
Fig. 5 is the C-C generalized section of Fig. 3.
Fig. 6 is the structural representation of girder steel bracing frame.
Fig. 7 is the schematic side view of Fig. 6.
Fig. 8 is the structural representation that girder steel is laid bracing frame.
Fig. 9 is the schematic side view of Fig. 8.
Figure 10 is the schematic diagram that top, storehouse girder steel is connected with the girder steel bracing frame.
Figure 11 is that top, storehouse girder steel is placed in girder steel and lays schematic diagram on the bracing frame.
Reference numeral: 1-sliding formwork hoisting frame, 1.1-hoisting frame column, 1.2-hoisting frame crossbeam, 1.3-tripod; 2-hydraulic jack, 3-support bar, 4-medial and lateral template, 5-enclosure, 6-enclose purlin rest, 7-safety barrier, 8-safety net, 9-hang scaffold, top, 10-storehouse girder steel, 11-girder steel bracing frame, 12-girder steel are laid bracing frame.
The specific embodiment
Referring to Fig. 1, shown in Figure 2, this silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, comprise sliding form apparatus and hydraulic lifting system, the sliding formwork hoisting frame 1 of above-mentioned sliding form apparatus is connected with operating platform with medial and lateral template 4, connect bridging between the two hoisting frame columns, also connect girder steel bracing frame 11 on the sliding formwork hoisting frame 1, girder steel bracing frame 11 is linked to be lifting integral body with top, storehouse girder steel 10, by the lifting dynamical system of hydraulic lifting system as above-mentioned lifting integral body, hydraulic lifting system is made up of hydraulic jack 2, support bar 3, hydraulic control panel and oil circuit.
Referring to Fig. 3-5, described sliding form apparatus connects into out font sliding formwork hoisting frame 1 by two file hoisting frame columns 1.1 and two horizontally-arranged hoisting frame crossbeams 1.2, the fixedly connected a pair of tripod 1.3 of difference on two hoisting frame columns 1.1, attended operation platform and hang scaffold on the tripod 1.3, below hoisting frame crossbeam 1.2, the inboard of two hoisting frame columns 1.1 fixing medial and lateral template 4 respectively, the back side of medial and lateral template 4 is connected with upper, middle and lower three road closed type enclosures 5, and per pass enclosure 5 is all fixedlyed connected with hoisting frame column 1.1 by enclosing purlin rest 6; Fixedly connected with the hydraulic jack 2 in the hydraulic lifting system in the middle part of described hoisting frame crossbeam 1.2.
Above-mentioned girder steel bracing frame 11 includes four horizontal channel-section steels, surrounds square shape, and the downside of four horizontal channel-section steels is connected with four supporting legs, is connected with bracing piece between four supporting legs and four horizontal channel-section steels, and the bottom of four supporting legs is fixedly connected with steel plate.
The job practices of this silo structure structure storehouse top steel beam hydraulic hoisting and positioning adopts silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, and its construction sequence is:
Step 1: make the assembling sliding mode system.
Step 2: girder steel is installed on sliding mode system, is fulcrum with the sliding formwork hoisting frame 1 of both sides, girder steel installation site, and girder steel bracing frame 11 is fixedly connected on the sliding formwork hoisting frame 1, girder steel 10 is fixedly attached on the girder steel bracing frame 11 again.
Step 3: just the sliding stage, top, storehouse girder steel is installed in the medial and lateral template 4, and concreting does not collapse after the concrete depanning, again not by the Form board tape time-out, carries out just sliding the liter.
Step 4: the sliding liter stage, whenever build a layer concrete, LIFT of enhancing tube chamber structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, continuous placing promotes continuously successively.
Step 5: finish sliding the liter stage, when rising to design elevation, stop sliding the liter when sliding.
Step 6: carry out top, storehouse girder steel and install.
Above-mentioned steps six may further comprise the steps:
A, at wall place, storehouse, girder steel notch both sides, top, storehouse a pre-buried pre-embedded steel slab respectively.
B, dismounting sliding formwork platform radial pattern horizontal support, notch place inner platform and inner side template, enclosure, welded steel beam is laid bracing frame 12 on the pre-embedded steel slab of top, storehouse.
C, utilize Chain block that girder steel 10 is mentioned, and temporary fixed.
D, original girder steel bracing frame 11 is removed.
E, girder steel 10 is dropped in the notch with Chain block, and in place fixing.
Referring to Fig. 6, Fig. 7, above-mentioned girder steel bracing frame 11 includes four horizontal channel-section steels, surrounds square shape, and the downside of four horizontal channel-section steels is connected with four supporting legs, is connected with bracing piece between four supporting legs and four horizontal channel-section steels, and the bottom of four supporting legs is fixedly connected with steel plate.
Referring to Fig. 8, Fig. 9, above-mentioned girder steel is laid bracing frame 12 and is included four horizontal channel-section steels, surround square shape, the downside of four horizontal channel-section steels is connected with four supporting legs, article four, be connected with bracing piece between supporting leg and four horizontal channel-section steels, surround square shape horizontal channel-section steel each side be symmetrically welded with an oblique steel pipe, two oblique steel pipe symmetry opposite tilts and close gradually from bottom to top, the top of two oblique steel pipes is fixedly connected by a horizontal steel pipe, and the bottom of the bottom of four supporting legs and two oblique steel pipes is fixedly connected with steel plate.
Embodiment is referring to Fig. 1, silo diameter 22.5m, and height 65m, the storehouse top board is formed top, storehouse steel structure framework by four road girders and hot rolled H-shaped secondary beam, upper berth profiled sheet, the steel concrete surface layer that surface coverage 120mm is thick.Top, storehouse girder is trussed-beam steel beam, and length has two kinds of 22.524m, 18.912m, and weight is respectively: 7.4t, 5.2t.Silo structure construction vertical transport adopts tower crane, utilizes silo sliding formwork hydraulic system that top, storehouse girder steel is brought to corresponding height and installs.
The main construction method step: the making of sliding mode system assemble → is installed on sliding mode system sliding stage of girder steel → just → cunning stage of rising → is finished the cunning stage of rising → installation of top, storehouse girder steel.
Template system is made up of inner and outer template, enclosure and hoisting frame.Inner and outer template can adopt combined steel formwork, uses U type card connection between template.Enclosure is called again encloses purlin.In the behind of medial and lateral template, upper, middle and lower totally three road closed type enclosures are set, enclosure is connected with drag hook with template, and enclosure is connected with channel-section steel with hoisting frame.Hoisting frame is called jack stand again.It is jack to be installed and to be connected into whole main member with enclosure, template.Hoisting frame can be out font, and the hoisting frame crossbeam is higher than more than the operating desk 50cm.Each silo all disposes 48 cover hoisting frames, hoisting frame adopt channel-section steel to connect by bolt and soldering group to forming.
Hydraulic lifting system is made up of cramp bar, hydraulic jack, hydraulic control panel and oil circuit etc.
Operation platform system is by operating platform and hang scaffold and form.
1), operating platform by the channel-section steel group to become inside and outside triangle builder's jack forms builder's jack formula operating platform also and hoisting frame be connected to form integral body.For triangle builder's jack in preventing inwardly topples, in its end the horizontal connection ring is set, the horizontal connection ring adopts channel-section steel to make annulus, and the pull bar that is provided with between annulus and interior triangle builder's jack is strained.By this radial pattern horizontal support, not only each hoisting frame is connected into as a wholely, and rise in the process sliding, by the elasticity bolt on each pull bar, can also adjust the ovalizing deflection of template.
2), hang scaffold and claim down assistance platform or suspension bracket again, divide inside and outside two kinds to hang scaffold.Interior hung scaffold hangs on the tripod of hoisting frame and operating platform, hangs scaffold outward and hangs over hoisting frame and choose on the tripod outward.The outside of hanging scaffold must be provided with safe protective railing, and completely hangs safety net.
Step 2 is installed girder steel on sliding mode system.
(1), sliding mode system assembling finishes after the acceptance(check), can carry out the installation that next process is a girder steel;
(2), before girder steel is installed, to reinforce the hoisting frame of both sides, girder steel installation site, between the hoisting frame column of inside and outside both sides, add vertical bracing, bridging adopts channel-section steel to make, to guarantee that two hoisting frames that support girder steel form rigid unitary, preventing that two hoisting frames from causing owing to stroke is different sliding rises girder steel run-off the straight in the process, also is convenient to correction, correction simultaneously.
(3), before girder steel is installed, the hoisting frame support bar of both sides, girder steel installation site is fixing with the welding of storehouse wall reinforcing bar, and assurance support bar stability is guaranteed the installation quality of girder steel.
(4), girder steel bracing frame 11 is installed, be fulcrum with the bracing frame of both sides, girder steel installation site, the girder steel bracing frame is installed.Girder steel bracing frame 11 is referring to Fig. 6, Fig. 7.
(5), before girder steel is installed, sign tapping beam installation site line and control corresponding line on girder steel bracing frame crossbeam, utilize crawler crane that the girder steel lifting is placed on the girder steel support then, and vertical bracing is set between several girder steels, bridging adopts channel-section steel to make, and four Pin bridgings are installed between every adjacent girder steel, and it is in aggregates that several girder steels are connected, with the stability of guaranteeing to rise girder steel in the process, also strengthened the globality and the stability of sliding mode system simultaneously sliding.
(1), is positioned at the girder steel both sides at Ku Ding and establishes pre-embedded steel slab and dowel respectively.
(2), remove sliding formwork platform radial pattern horizontal support, notch place inner platform and inner side template, enclose purlin.Welded steel beam is laid bracing frame 12 on the pre-embedded steel slab of top, storehouse, and girder steel is laid bracing frame 12 schematic diagrames and seen Fig. 8, Fig. 9.
(3), utilize Chain block that girder steel is mentioned, and temporary fixed.
(4), original girder steel bracing frame 11 is removed.
(5), girder steel is dropped to desired location, and in place fixing with Chain block.
Claims (7)
- [claim 1] a kind of silo structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, comprise sliding form apparatus and hydraulic lifting system, it is characterized in that: the sliding formwork hoisting frame (1) of above-mentioned sliding form apparatus with in, outboard template (4) is connected with operating platform, connect bridging between the two hoisting frame columns, also connect girder steel bracing frame (11) on the sliding formwork hoisting frame (1), girder steel bracing frame (11) is linked to be lifting integral body with top, storehouse girder steel (10), by the lifting dynamical system of hydraulic lifting system as above-mentioned lifting integral body, hydraulic lifting system is by hydraulic jack (2), support bar (3), hydraulic control panel and oil circuit are formed.
- [claim 2] silo structure structure according to claim 1 storehouse top steel beam hydraulic hoisting and positioning apparatus, it is characterized in that: described sliding form apparatus connects into out font sliding formwork hoisting frame (1) by two file hoisting frame columns (1.1) and two horizontally-arranged hoisting frame crossbeams (1.2), go up fixedly connected a pair of tripod (1.3) respectively at two hoisting frame columns (1.1), tripod (1.3) is gone up the attended operation platform and is hung scaffold, below in hoisting frame crossbeam (1.2), in the inboard of two hoisting frame columns (1.1) is fixing respectively, outboard template (4), in, the back side of outboard template (4) is connected with, in, three road closed type enclosures (5) down, per pass enclosure (5) is all fixedlyed connected with hoisting frame column (1.1) by enclosing purlin rest (6); Fixedly connected with the hydraulic jack (2) in the hydraulic lifting system in the middle part of described hoisting frame crossbeam (1.2).
- [claim 3] silo structure structure according to claim 2 storehouse top steel beam hydraulic hoisting and positioning apparatus, it is characterized in that: above-mentioned girder steel bracing frame (11) includes four horizontal channel-section steels, surround square shape, the downside of four horizontal channel-section steels is connected with four supporting legs, article four, be connected with bracing piece between supporting leg and four horizontal channel-section steels, the bottom of four supporting legs is fixedly connected with steel plate.
- The job practices of [claim 4] a kind of silo structure structure storehouse top steel beam hydraulic hoisting and positioning is characterized in that adopting the described silo structure structure of claim 1-3 storehouse top steel beam hydraulic hoisting and positioning apparatus, and its construction sequence is:Step 1: make the assembling sliding mode system;Step 2: girder steel is installed on sliding mode system, is fulcrum with the sliding formwork hoisting frame (1) of both sides, girder steel installation site, and girder steel bracing frame (11) is fixedly connected on the sliding formwork hoisting frame (1), girder steel (10) is fixedly attached on the girder steel bracing frame (11) again;Step 3: just the sliding stage, top, storehouse girder steel is installed in the medial and lateral template (4), and concreting does not collapse after the concrete depanning, again not by the Form board tape time-out, carries out just sliding the liter;Step 4: the sliding liter stage, whenever build a layer concrete, LIFT of enhancing tube chamber structure structure storehouse top steel beam hydraulic hoisting and positioning apparatus, continuous placing promotes continuously successively;Step 5: finish sliding the liter stage, when rising to design elevation, stop sliding the liter when sliding;Step 6: carry out top, storehouse girder steel and install.
- The job practices of [claim 5] silo structure structure according to claim 4 storehouse top steel beam hydraulic hoisting and positioning apparatus, it is characterized in that: above-mentioned steps six may further comprise the steps:A, at wall place, storehouse, girder steel notch both sides, top, storehouse a pre-buried pre-embedded steel slab respectively;B, dismounting sliding formwork platform radial pattern horizontal support, notch place inner platform and inner side template, enclosure, welded steel beam is laid bracing frame (12) on the pre-embedded steel slab of top, storehouse;C, utilize Chain block that girder steel (10) is mentioned, and temporary fixed;D, original girder steel bracing frame (11) is removed;E, girder steel (10) is dropped in the notch with Chain block, and in place fixing.
- [claim 6] is according to the job practices of claim 4 or 5 described silo structure structure storehouse top steel beam hydraulic hoisting and positionings, it is characterized in that: above-mentioned girder steel bracing frame (11) includes four horizontal channel-section steels, surround square shape, the downside of four horizontal channel-section steels is connected with four supporting legs, article four, be connected with bracing piece between supporting leg and four horizontal channel-section steels, the bottom of four supporting legs is fixedly connected with steel plate.
- [claim 7] is according to the job practices of claim 4 or 5 described silo structure structure storehouse top steel beam hydraulic hoisting and positionings, it is characterized in that: above-mentioned girder steel is laid bracing frame (12) and is included four horizontal channel-section steels, surround square shape, the downside of four horizontal channel-section steels is connected with four supporting legs, article four, be connected with bracing piece between supporting leg and four horizontal channel-section steels, surround square shape horizontal channel-section steel each side be symmetrically welded with an oblique steel pipe, two oblique steel pipe symmetry opposite tilts and close gradually from bottom to top, the top of two oblique steel pipes is fixedly connected by a horizontal steel pipe, and the bottom of the bottom of four supporting legs and two oblique steel pipes is fixedly connected with steel plate.
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| CN2008103063581A CN101435276B (en) | 2008-12-18 | 2008-12-18 | Hydraulic lifting and positioning device for steel beam at top of silo structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3966376A (en) * | 1972-10-13 | 1976-06-29 | Otto Heinzle | Slip form arrangement for constructing annular structures |
| CN101126279B (en) * | 2007-07-31 | 2010-09-08 | 中国建筑第七工程局有限公司 | Silo slipform construction technique |
| CN201148730Y (en) * | 2007-12-11 | 2008-11-12 | 山西焦煤集团有限责任公司 | Super large diameter cylindrical silo hydraulic slip mold construction operating platform |
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