CN101839070B - Construction method for temporarily supporting and strengthening reinforced concrete structured beam by using steel column - Google Patents
Construction method for temporarily supporting and strengthening reinforced concrete structured beam by using steel column Download PDFInfo
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- CN101839070B CN101839070B CN2010101480510A CN201010148051A CN101839070B CN 101839070 B CN101839070 B CN 101839070B CN 2010101480510 A CN2010101480510 A CN 2010101480510A CN 201010148051 A CN201010148051 A CN 201010148051A CN 101839070 B CN101839070 B CN 101839070B
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Abstract
The invention discloses a construction method for temporarily supporting and strengthening a reinforced concrete structured beam by using a steel column. The method for temporarily supporting and strengthening the reinforced concrete structured beam is finished by the following construction steps of: arranging a base steel plate of the steel column; stringing a bolt hole to draw and lift steel column members; adjusting the verticality of the steel column and limiting the position; arranging and fixing a steel column jacking support; tightening and prepressing the steel column by using a simple jack, welding to form a steel column bearing base support, and the like. The construction method has the advantages of simple assembly and disassembly, low labor intensity, low labor and material consumption, and good effect of the formed temporary support structure.
Description
Technical field:
The present invention relates to a kind of architectural engineering construction technique, is the job practices of reinforced concrete structured beam being carried out interim bracing reinforcement with steel column.
Background technology:
In building and building engineering construction process, usually need on the reinforced concrete structured beam plate, arrange large-scale construction equipment equipment such as construction elevator, perhaps because of the interim traffic requirement of constructing, need be at the up load-carrying motor vehicles and machines of walking of structure beam slab, perhaps heavy component lifting installation needs on the invar tendon concrete structure beam slab, need on the structure beam slab, use large-scale hanging device, these working measures and method, can make corresponding reinforced concrete structure produce serious overload phenomenon, its function of use changes greatly, may cause reinforced concrete beam and plate can not satisfy the requirement of design supporting capacity.Increase pivot point technique, reduce the span of structural beams, it is one of effective ways of raising and assurance reinforced concrete beam and plate supporting capacity that reinforced concrete beam and plate is carried out interim bracing reinforcement.Common interim bracing reinforcement method has two kinds, a kind of is the common pin hand steel pipe full framing of employing system, as adopt fastener type steel pipe to support or the support of bowl fastening type steel pipe, cooperate and adopt adjustable rest, finish interim bracing reinforcement to reinforced concrete beam and plate, for satisfying the supporting capacity requirement, in particular for the supporting capacity requirement of satisfying under the concentration of local load action, it is generally very close to support the vertical rod arrangement pitch, support is set up and is arranged or remove the cleaning difficulty, time is long, the backing material consumption is big, and safety and quality control clearance are large in number and widely distributed, and the factor that may cause supporting inefficacy is more.Another kind is to adopt steel pipe column to prop up staying temporarily, at the bottom of steel column placed beam, adopt hydraulic jack that the steel column precompressed is shored, finish reliable steel column basic stress bearing after, form steel column and support thereby withdraw from hydraulic jack, the interim support of this kind steel column can only pressure-bearing and can not bear; Frictional constraint owing to lower fulcrum on the steel pipe column only exists abutment pressure to produce for guaranteeing the supporting ﹠ stablizing performance of steel column, generally need be provided with inter-tie and bridging between steel column; Can only pressure-bearing and the reason that can not bear just because of the interim support of this kind steel column, move under (variation) load action at large-tonnage on the structure beam slab, must notice that the interim support of some steel column may not stress, can not form and the interim reliably constraint bearing of structural beams, thereby cause part beam section line stiffness variation, the increase greatly of local beam section cross section institute bearing load.
Summary of the invention:
The object of the present invention is to provide a kind of safe and reliable, easy and simple to handle, reinforced concrete structured beam is carried out the job practices of interim bracing reinforcement with steel column fast.
Technical solution of the present invention is:
A kind ofly reinforced concrete structured beam is carried out the job practices of interim bracing reinforcement, it is characterized in that: comprise the following steps: with steel column
When 1) concrete foundation is constructed, the indented bars crab-bolt of pre-buried band straight thread head in the basis, or the indented bars crab-bolt of being with the straight thread head is arranged in the back bar planting; Reserve the indented bars bolt sleeve of wearing band straight thread head during the construction of structure beam slab, or the indented bars bolt hole of wearing band straight thread head is arranged in the back punching;
2) check the planeness of waiting to support steel column position basic plane, beam baseplane and back plane, adopt finisher that the supporting base surface finish is smooth,, process indented bars bolt, the supporting sleeve of steel column, band straight thread head according to the working design requirement;
3) place steel column pedestal steel plate, utilize a hole or two holes of wearing in the beam slab in the bolt hole, reeve adopts the Chain block tractive to promote steel column, wears jacking bearing straight thread bolt, and sleeve is just twisted fixing, shifts out the lifting wire rope; Steel column is the form that the top is fixed with the jacking bearing, is symmetrically welded in the steel column foot bottom to be furnished with two place's jacking steel ear plates;
4) adjust to check steel column verticality and position thereof, and carry out spacingly, symmetry tights a bolt and goes up straight screw sleeve, and fixes steel column jacking bearing;
5) on the steel column pedestal steel plate, steel column foot jacking steel ear plate below two jack of symmetric arrangement, steel column is implemented the roof pressure pretightning force;
6) being welded to connect of steel column base support: before the weld job, check the bolt sleeve degree of tightening that cooperates with the indented bars crab-bolt of band straight thread head on the pedestal steel plate, bolt sleeve is tightened; The weld seam type of attachment all adopts easy-operating fillet weld form, earlier stiffener and pedestal steel plate and steel column spot welding are fixed, and steel column and the spot welding of pedestal steel plate fixed, distortion in the formal weld job process of constraint control, symmetry is carried out weld job step by step then, carry out the construction that is welded to connect of stiffener and pedestal steel plate earlier, after carry out the construction that is welded to connect of stiffener and steel column, carry out the construction that is welded to connect of steel column and pedestal steel plate at last;
7) unclamp and shift out jack, finish this interim layout that supports steel column.
Described jack is simple and easy jack, comprises the base steel plate, installs the indented bars of band straight thread on the base steel plate, and indented bars cooperates with straight screw sleeve, and the straight screw sleeve top installs the jacking plate; It is opposite that the revolving of two jack rises the hand of spiral hold out against.Dress is only turned round part on the jacking plate.
Defective and difficulty when the present invention overcomes the general using steel column reinforced concrete structured beam is carried out the construction of interim bracing reinforcement have safe and reliable, easy and simple to handle, advantage fast, and have following advantage:
1) the last undersetting of steel column adopts indented bars spiral shell (anchor) bolt of band straight screw sleeve to fix, can simply form the constraint good to the steel column bearing, and the frictional constraint that general interim support steel column only exists abutment pressure to produce owing to lower fulcrum on the steel pipe column, for guaranteeing the supporting ﹠ stablizing performance of steel column, generally inter-tie and bridging need be set between steel column, the present invention has effectively avoided the layout of inter-tie and bridging, supports materials and economizes.
2) the interim support of steel column of the present invention can pressure-bearing can bear again, and steel column bearing performance and structural beams line rigidity are not subjected to move on the beam slab with the load that changes fully to be influenced; And general steel column supports temporarily, only can pressure-bearing and can not bear, move under (variation) load action at large-tonnage on the structure beam slab, must notice that the interim support of some steel column may not stress, can not form and the interim reliably constraint bearing of structural beams, thereby cause part beam section line stiffness variation, the increase greatly of local beam section cross section institute bearing load.
Adopt two simple and easy jack when 3) precompressed of the present invention holds out against steel column, simple and easy jack adopts screw thread bar dowel, the straight screw sleeve of steel plate, band straight thread head to make, every simple and easy jack is all established and is only turned round part, simultaneously two simple and easy jack revolves that to rise the hand of spiral that holds out against opposite, when symmetry is rotated straight screw sleeve, torque influence to steel column is just in time offset, support the required suitable roof pressure pretightning force control of steel column by the moment of torsion simple realization temporarily, effect with hydraulic jack, but practicality simple to operate, cost is low.
4) installation of temporarily supporting steel column with remove simple, safe and reliable.Utilize a hole or two holes of wearing in the beam (plate) in the bolt hole, reeve adopts the Chain block tractive to promote or the decline steel column, but and simple realization support the installation quality control of steel column temporarily, the consumption worker is few, labour intensity is low, handling safety.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is that the steel column of one embodiment of the invention supports diagrammatic sketch temporarily.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B view of Fig. 1.
Fig. 4 is the C-C diagrammatic sketch of Fig. 1.
Fig. 5 is the configuration diagram of simple and easy jack.
The specific embodiment:
A kind ofly reinforced concrete structured beam is carried out the job practices of interim bracing reinforcement, comprise the following steps: with steel column
When 1) concrete foundation is constructed, the indented bars crab-bolt 2 of pre-buried band straight thread head in the reinforced concrete base structure 1, or the indented bars crab-bolt of band straight thread head is arranged in the back bar planting; Reserve the indented bars bolt sleeve 14 of wearing band straight thread head during 4 constructions of structure beam slab, or the indented bars bolt hole of wearing band straight thread head is arranged in the back punching;
2) check the planeness of waiting to support steel column position basic plane, beam baseplane and back plane, adopt finisher that the supporting base surface finish is smooth,, process indented bars bolt, the supporting sleeve of steel column, band straight thread head according to the working design requirement;
3) place steel column pedestal steel plate 3, utilize a hole or two holes of wearing in the beam slab in the bolt hole, reeve adopts the Chain block tractive to promote steel column 8, wears jacking bearing straight thread bolt, and sleeve is just twisted fixing, shifts out the lifting wire rope; Steel column is the form that the top is fixed with jacking bearing 5, is symmetrically welded in the steel column foot bottom to be furnished with two place's steel ear plates 6;
4) adjust to check steel column verticality and position thereof, and carry out spacing, the straight screw sleeve on symmetry tights a bolt, and fix steel column jacking bearing 5;
5) on the steel column pedestal steel plate, steel column foot steel ear plate below two jack of symmetric arrangement, steel column is implemented the roof pressure pretightning force;
6) being welded to connect of steel column base support: before the weld job, check the bolt sleeve degree of tightening that cooperates with the indented bars crab-bolt of band straight thread head on the pedestal steel plate 3, bolt sleeve is tightened; The weld seam type of attachment all adopts easy-operating fillet weld form, earlier stiffener 7 and pedestal steel plate 3 and steel column 8 spot welding are fixed, and steel column and the spot welding of pedestal steel plate fixed, distortion in the formal weld job process of constraint control, symmetry is carried out weld job step by step then, carry out the construction that is welded to connect of stiffener and pedestal steel plate earlier, after carry out the construction that is welded to connect of stiffener and steel column, carry out the construction that is welded to connect of steel column and pedestal steel plate at last;
7) unclamp and shift out jack, finish this interim layout that supports steel column.
Described jack is simple and easy jack, comprises base steel plate 9, installs the indented bars 10 of band straight thread on the base steel plate, and indented bars cooperates with straight screw sleeve 11, and the straight screw sleeve top installs jacking plate 12; It is opposite that the revolving of two jack rises the hand of spiral hold out against.Dress is only turned round part 13 on the jacking plate.The part of only turning round on the simple and easy jack just in time blocks steel ear plate 6, and the torque influence of steel column is cancelled out each other.
Be provided with and the bolt of roof beam board position, the fixation steel plate 15 that sleeve cooperates on plane, structure top.
Claims (3)
1. one kind is carried out the job practices of interim bracing reinforcement with steel column to reinforced concrete structured beam, it is characterized in that: comprise the following steps:
When 1) concrete foundation is constructed, the indented bars crab-bolt of pre-buried band straight thread head in the basis, or the indented bars crab-bolt of being with the straight thread head is arranged in the back bar planting; The indented bars bolt hole of wearing band straight thread head is arranged in punching during the construction of structure beam slab;
2) check the planeness of waiting to support steel column position basic plane, beam baseplane and back plane, adopt finisher that the supporting base surface finish is smooth,, process indented bars bolt, the supporting sleeve of steel column, band straight thread head according to the working design requirement;
3) place steel column pedestal steel plate, utilize two holes of wearing in the beam slab in the bolt hole, reeve adopts the Chain block tractive to promote steel column, wears jacking bearing straight thread bolt, and sleeve is just twisted fixing, shifts out the lifting wire rope; Steel column is the form that the top is fixed with the jacking bearing, is symmetrically welded in the steel column foot bottom to be furnished with two place's jacking steel ear plates;
4) adjust to check steel column verticality and position thereof, and carry out spacingly, symmetry is tightened straight thread bolt upper bush, and fixes steel column jacking bearing;
5) on the steel column pedestal steel plate, steel column foot jacking steel ear plate below two jack of symmetric arrangement, steel column is implemented the roof pressure pretightning force;
6) being welded to connect of steel column base support: before the weld job, check the bolt sleeve degree of tightening that cooperates with the indented bars crab-bolt of band straight thread head on the pedestal steel plate, bolt sleeve is tightened; The weld seam type of attachment all adopts easy-operating fillet weld form, earlier stiffener and pedestal steel plate and steel column spot welding are fixed, and steel column and the spot welding of pedestal steel plate fixed, distortion in the formal weld job process of constraint control, symmetry is carried out weld job step by step then, carry out the construction that is welded to connect of stiffener and pedestal steel plate earlier, after carry out the construction that is welded to connect of stiffener and steel column, carry out the construction that is welded to connect of steel column and pedestal steel plate at last;
7) unclamp and shift out jack, finish this interim layout that supports steel column.
2. job practices of reinforced concrete structured beam being carried out interim bracing reinforcement with steel column according to claim 1, it is characterized in that: described jack is simple and easy jack, comprise the base steel plate, install the indented bars of band straight thread on the base steel plate, indented bars cooperates with straight screw sleeve, and the straight screw sleeve top installs the jacking plate; It is opposite that the revolving of two jack rises the hand of spiral hold out against.
3. according to claim 2ly with steel column reinforced concrete structured beam is carried out the job practices of interim bracing reinforcement, it is characterized in that: dress is only turned round part on the jacking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101480510A CN101839070B (en) | 2010-04-07 | 2010-04-07 | Construction method for temporarily supporting and strengthening reinforced concrete structured beam by using steel column |
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| CN2010101480510A CN101839070B (en) | 2010-04-07 | 2010-04-07 | Construction method for temporarily supporting and strengthening reinforced concrete structured beam by using steel column |
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| CN101839070B true CN101839070B (en) | 2011-12-28 |
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| FI123244B (en) * | 2010-10-26 | 2013-01-15 | Peikko Group Oy | Column Shoe |
| CN102493554B (en) * | 2011-12-13 | 2013-10-16 | 北京城建中南土木工程集团有限公司 | Abutting joint device of steel lattice column, and construction method of same |
| CN102561392A (en) * | 2012-03-06 | 2012-07-11 | 中天建设集团有限公司 | Structure for supporting construction elevator foundation on basement top plate and construction method thereof |
| CN103306533B (en) * | 2013-04-01 | 2015-10-21 | 广东金辉华集团有限公司 | Steel column band base construction system and disposable installing and fixing method thereof |
| CN103225411B (en) * | 2013-05-08 | 2016-06-15 | 中铁十局集团西北工程有限公司 | Both wired protection canopy |
| CN104132189A (en) * | 2014-04-29 | 2014-11-05 | 中建四局第六建筑工程有限公司 | Concrete pump pipe fixing system applied under condition of high and steep slope |
| CN105089281A (en) * | 2014-10-27 | 2015-11-25 | 重庆建工集团股份有限公司 | Dedicated hoop for prepressing steel truss and method for prepressing steel truss |
| CN105297795A (en) * | 2015-10-28 | 2016-02-03 | 中国地质大学（武汉） | Verticality deviation treatment component for steel stand columns and use method of verticality deviation treatment component |
| CN105587115B (en) * | 2015-12-17 | 2018-09-21 | 上海建工五建集团有限公司 | A kind of climbing frame fixing device and method for preventing damage exterior finish |
| CN106013840B (en) * | 2016-05-16 | 2018-03-06 | 中天建设集团有限公司 | The unloading bracing members joint structure and its construction method of a kind of stiffness cantilevered structure |
| CN106351462B (en) * | 2016-10-18 | 2023-01-13 | 广东省建筑科学研究院集团股份有限公司 | Temporary steel pipe support prestress reinforcing structure and construction method thereof |
| CN107473054B (en) * | 2017-08-09 | 2019-07-26 | 重庆市渝建实业股份有限公司 | Construction elevator building method for building construction |
| CN110630035A (en) * | 2019-09-10 | 2019-12-31 | 西南交通大学 | Steel column supporting structure for bottom of reinforced concrete floor beam |
| CN111571206B (en) * | 2020-05-21 | 2021-09-28 | 中国十九冶集团有限公司 | Method for mounting front cross beam and rear cross beam of extruder |
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| JPH0762747A (en) * | 1993-08-31 | 1995-03-07 | Maeda Corp | Building method of pillar and beam and device therefor |
| US7392624B2 (en) * | 2003-02-05 | 2008-07-01 | Dwight Eric Kinzer | Modular load-bearing structural column |
| JP5017887B2 (en) * | 2006-03-03 | 2012-09-05 | 株式会社大林組 | Tower crane support structure, tower crane support method |
| CN100510297C (en) * | 2008-04-02 | 2009-07-08 | 中铁建工集团有限公司 | Method for installing and detaching temporary supporting device used in construction |
| CN101545318A (en) * | 2009-04-01 | 2009-09-30 | 青岛恒生源集团建设有限公司 | Quick-removing construction method for cast-in-place concrete ribbed slab floor shuttering |
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