CN103967129A - Combination column and combination beam frame with internally-arranged pipe high-strength concrete core columns and construction method thereof - Google Patents
Combination column and combination beam frame with internally-arranged pipe high-strength concrete core columns and construction method thereof Download PDFInfo
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Abstract
The invention relates to a combination column and combination beam frame with internally-arranged pipe high-strength concrete core columns and a construction method of the combination column and combination beam frame. The combination column and combination beam frame with the internally-arranged pipe high-strength core columns is provided with internally-arranged asymmetric steel rib or plastic rib prestressed concrete combination beams and reinforcing bar concrete combination columns with the internally-arranged core columns, the combination beams are horizontally arranged between the combination columns, and the combination beams are connected with the combination columns at intersections through joints. The core columns are steel pipe concrete columns or FRP pipe concrete columns, shearing keys for resisting concrete sliding are arranged on the outer walls of the core columns, and the core columns are placed in the reinforcing bar concrete columns. Transverse stiffening ribs are arranged on steel ribs or plastic ribs in the combination beams, the steel ribs or the plastic ribs at the midspan positions are arranged on the lower portions of the combination beams, the steel ribs or the plastic ribs on supports are arranged on the upper portions of the combination beams, and prestressed ribs are arranged in the combined beams in the length direction. The prestressed ribs on the beam and column joints penetrate through two sides of the core columns, and are tensioned and anchored at the ends of the combination columns. The axial pressure capable of being borne by the frame is large, and too wide columns are prevented from existing in a system; the prestressed ribs are blended in the combination beams, and the deformation and cracks of the combination beams can be reduced.
Description
One, technical field:
What the present invention relates to is the house frame structure in civil engineering structure field, and what be specifically related to is coupled column assembled beam frame and the construction method thereof of built-in pipe high-strength concrete stem stem.
Two, background technology:
Conventional building frame construction mostly is reinforced concrete frame and steel frame, and attainable span is less, and element bearing capacity is lower, and in Practical Project, application has significant limitation.Along with building is to the future development higher, span is larger and heavily loaded, conventional structure system was faced with new challenges in recent years.People start to build the structural system that rigidity is larger, supporting capacity is stronger, reinforcing bar will be added in concrete, concrete and reinforcing bar are bonded together, cooperative transformation is stressed, form combining structure, its rigidity is large, easy construction, deficiency and the defect of conventional frame construction are made up, extensive use in multi-rise building structure for the moment.As everyone knows, the application of prestressing technique in structural system can make structure realize larger span, but the layout of presstressed reinforcing steel often contradicts with other members, as the frame system that adopts real abdomen formula steel framed concrete beam and real abdomen formula combined steel and concrete column to form is applied to prestressing force, presstressed reinforcing steel will inevitably pass in post reinforcing bar, node is produced greatly and weakened, the arrangements of presstressed reinforcing steel in beam can be subject to the constraint of built-in shaped steel simultaneously, for avoiding this adverse effect, people have built a kind of using open web type steel angle concrete column as frame column, structural system using prestressing force reinforcing bar concrete beam as Vierendeel girder, presstressed reinforcing steel can pass in angle steel, realize stretch-draw and anchoring at styletable, although this system has solved the Layout Problem of presstressed reinforcing steel, but the reinforcing bar in steel angle concrete column needs welding, construction relative complex, and the energy dissipation capacity of this type of post is general, hysteresis loop is not full, anti seismic efficiency is not obvious, often bigger than normal for meeting in the Structure of need system of ratio of axial compressive force to axial compressive ultimate capacity of section column cross-section size, easily form fat post, take very large space, therefore for column cross-section size is reduced, do not affect the layout of presstressed reinforcing steel simultaneously, build new structural system extremely urgent.
Three, summary of the invention:
The object of this invention is to provide the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem, it is large for solving the sectional dimension of existing general armored concrete post, in compound beam, presstressed reinforcing steel is in the problem of the more difficult layout of node, and another object of the present invention is to provide the construction method of the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem.
The technical solution adopted for the present invention to solve the technical problems is: the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem has built-in asymmetrical reinforcing bar or moulds the armored concrete coupled column of bone prestressed concrete compound beam, built-in stem stem, compound beam is horizontally set between coupled column, and the two adopts node to connect in intersection; Stem stem is steel core concrete column or FRP pipe concrete column, and stem stem outer wall arranges the shear connector of anti-concrete slippage, and stem stem is placed in armored concrete post; Compound beam section form is rectangle, built-in reinforcing bar or to mould bone be H type, reinforcing bar or mould bone transverse stiffener is set, span centre place reinforcing bar or mould the position of bone in the bottom of compound beam, bearing place reinforcing bar or mould the position of bone in the top of compound beam, presstressed reinforcing steel is arranged in compound beam along its length; Bean column node place presstressed reinforcing steel passes from the both sides of stem stem, in combination styletable stretch-draw and anchoring, and the H shaped steel in compound beam or mould bone and be fixedly connected with by two half snap ring connectors with stem stem.
In such scheme, in the stem stem of coupled column, build high-strength concrete, armored concrete post adopts conventional concrete, form special strong concrete coupled column, can further improve the axial compression performance of post, therefore under same external force, can make such sectional dimension less, high-strength concrete stem stem is except can be at the scene cast-in-place, also can be prefabricated in the factory, on-the-spot installation, reduces workload, shortens construction period.
H shaped steel in such scheme in compound beam or mould bone and adopt honeycomb type polygonal beam, at compound beam H shaped steel or mould on the web between bone transverse stiffener and punch, cross section, hole is circle or hexagon or octagon, not only can alleviate the deadweight of beam, avoid stress to concentrate, save steel, when construction, wire rope can pass simultaneously, is convenient to lifting.
In such scheme, the arrangement form of presstressed reinforcing steel in compound beam is shaped form or broken line type, presstressed reinforcing steel is at reinforcing bar or mould on the stiffening rib in bone and pass, presstressed reinforcing steel and reinforcing bar or to mould bone be correlation form.
In such scheme, the arrangement form of presstressed reinforcing steel in compound beam is shaped form, presstressed reinforcing steel is arranged in outside reinforcing bar, presstressed reinforcing steel and reinforcing bar or to mould bone be dereferenced form.
In such scheme, in compound beam, concrete divides two-layer building, bottom is built conventional concrete, high-strength concrete is built on upper strata, form special strong concrete compound beam, like this, can give full play to concrete compressive property, it is high-strength concrete that compound beam span centre bears pressure zone within the scope of positive bending moment, tensile region is more low intensive concrete, can greatly improve the supporting capacity of compound beam, increases office's pressure performance of prestressed concrete at Nodes simultaneously.
The construction method of the different strong coupled column assembled beam frame of above-mentioned built-in stem stem:
First carry out the basis of all frame set zygostyles by design, simultaneously by the steel pipe in stem stem or mould pipe and armored concrete post longitudinal reinforcement be reliably anchored in basis, the stirrup of armored concrete post outside colligation, after all frame column colligations, the concrete of building stem stem and outside armored concrete post reaches the design height of bottom;
To stem stem steel pipe or mould pipe and splice, be to keep the steel pipe of Nodes or the continuous whole of moulding pipe, should avoid the splicing at bean column node place, steel pipe or mould pipe through node splicing within the scope of the high 1/2-1/3 of two layers of post;
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar of beam-ends or mould bone with steel pipe in stem stem or mould pipe and be reliably connected by two half snap ring connectors, then at the reinforcing bar of assembled remainder successively or mould bone; Then in the good position of specified design, transverse stiffener is installed, if presstressed reinforcing steel and reinforcing bar or mould and between bone, adopt associated arrangement form, adopt the stiffening rib of evagination, on it, will punch in advance, the hole line of centres on all stiffening ribs and presstressed reinforcing steel is linear is consistent; If adopt the arrangement form of dereferenced, stiffening rib also need not punch thereon without evagination, only plays the effect of monolithic stability.Then arrangement prestress muscle and corollary apparatus thereof, arranges vertical muscle in beam behind colligation location, in colligation beam and the stirrup of Nodes, and then beam column concreting, maintenance reaches after some strength, and stretch-draw and anchoring prestress muscle, form first floor frame system after form removal;
When compound beam is special strong concrete compound beam, in beam, concrete divides 2 layers to build, and bottom is built conventional concrete, and high-strength concrete is built on upper strata, and the high-strength concrete on beam top may extend into Nodes, and tension of prestressed tendon and anchoring are positioned at top just;
Then construct the successively frame system of other layers, until top layer, top layer stem stem stretches out the certain distance of top layer, guarantees that top layer stem stem can fully bear the effect of tension and compression internal force.
Beneficial effect:
1. the axial compression that the coupled column of the built-in high strength concrete filled steel tube stem stem of band of the present invention can bear is larger, can obviously reduce the sectional dimension of post, avoids the too too fat to move fat post of appearance in system.
2.in the built-in steel pipe/FRP of the present invention pipe concrete stem stem, can build high-strength or super high strength concrete, outside adopts conventional concrete, form special strong concrete coupled column, can further improve the axial compression performance of post, therefore under same external force, can make such sectional dimension less, high-strength or super high strength concrete stem stem is except can be at the scene cast-in-place, also can be prefabricated in the factory, on-the-spot installation, reduces workload, shortens construction period.
3. the attainable span of the present invention is large, and maximum span can reach 30 meters of left and right.In compound beam, presstressed reinforcing steel becomes parabolic type to arrange, can produce uniform counter-force and offset part external load.Presstressed reinforcing steel is dissolved in compound beam, can make beam produce antiarch in construction process, can reduce distortion and the crack of compound beam in operational phase and steel reinforced concrete formation one.
4. in beam of the present invention, built-in shaped steel adopts broken line type, arrange different from the shaped steel in conventional type steel concrete member, be asymmetric arrangement in behavior of frame composite steel beams tensile region, can give full play to the mechanical property of steel, shaped steel in Ultimate Loads lower section can enter surrender by total cross-section, the compressive strain that reaches capacity of edge, pressure zone concrete, gives full play to the maximum efficiency of steel.
5. the transverse stiffener being arranged in beam of the present invention on shaped steel not only can be guaranteed the stable of girder steel, can be used as the keeper of presstressed reinforcing steel simultaneously, in the time of construction, can locate presstressed reinforcing steel, thereby be convenient to pre-stress construction, in shaped steel broken line junction, stiffening rib also plays connection function.
6. the present invention has good ductility, and system wind resistance, good seismic performance are adapted at applying under the complex environments such as coastal and earthquake zone.
7. in the present invention, special strong concrete compound beam can be given full play to concrete compressive property, compound beam span centre bears pressure zone within the scope of positive bending moment and adopts high-strength concrete, tensile region adopts more low intensive concrete, can improve the supporting capacity of compound beam, increase office's pressure performance of prestressed concrete simultaneously at Nodes.
8. the steel pipe in the present invention or shaped steel are prefabricated in the factory, on-the-spot splicing and installation, and convenient construction, workmanship is easy to ensure.
9. in the present invention, the shaped steel in compound beam can adopt honeycomb type folding beam, on the web between beam stiffening rib, punches, and cross section is circle, hexagon or octagon, not only can alleviate the deadweight of beam, avoid stress to concentrate, save steel simultaneously, when construction, wire rope can pass, and is convenient to lifting.
Four, brief description of the drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is presstressed reinforcing steel and reinforcing bar in compound beam of the present invention/mould the not associated arrangement form figure of bone;
Fig. 3 is A-A sectional drawing in Fig. 2;
Fig. 4 is B-B sectional drawing in Fig. 2;
Fig. 5 is the top view of Fig. 2;
Fig. 6 is presstressed reinforcing steel curve in the present invention, steel pipe/the mould arranged in association form figure of fracture line;
Fig. 7 is presstressed reinforcing steel in the present invention, steel pipe/the mould arranged in association form figure of fracture line;
Fig. 8 is beam-column node schematic perspective view of the present invention;
Fig. 9 is stem stem and beam H steel section jointing structure schematic diagram in the present invention;
Figure 10 is two half snap ring connecting-piece structure schematic diagrames in the present invention;
Figure 11 is prefabricated core column annexation schematic diagram;
Figure 12 is the schematic diagram of the stem stem connection end of perforate in the present invention;
Figure 13 is coupled column schematic diagram in the present invention;
Figure 14 is special-shaped coupled column schematic diagram in the present invention;
Figure 15 is that in stem stem and beam, presstressed reinforcing steel is arranged schematic diagram;
Figure 16 is the splicing of the built-in shaped steel straightway of compound beam;
Figure 17 is the spliced map of the built-in shaped steel broken line of compound beam;
Figure 18 is the honeycomb polygonal beam schematic diagram that hexagon punches.
16 pairs of coupled column 2 compound beam 3 stem stem 4 reinforcing bar 5 stiffening ribs, half snap ring connector 7 presstressed reinforcing steel 8 connection end 9 hole 10 hole 11 crab-bolts.
Five, detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described further:
Embodiment 1:
As shown in Figure 1, the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem has built-in asymmetrical reinforcing bar or moulds the armored concrete coupled column 1 of bone prestressed concrete compound beam 2, built-in stem stem, compound beam 2 is horizontally set between coupled column 1, and the two adopts node to connect in intersection.Stem stem 3 is placed in armored concrete post.Shown in Fig. 8, Figure 15, bean column node place presstressed reinforcing steel 7 passes from the both sides of stem stem 3, and in combination styletable stretch-draw and anchoring, the H shaped steel in compound beam 2 or mould bone and be fixedly connected with by two half snap ring connectors 6 with stem stem 3, consults Fig. 9.In present embodiment, the armored concrete post in stem stem 3 and outside thereof adopts the concrete of same model.
Shown in Figure 13, stem stem 3 is steel core concrete column or FRP pipe concrete column, that pouring concrete is formed in steel pipe or FRP pipe, in stem stem 3, it is plain concrete, unreinforced, there is not flexing in FRP pipe, can give full play to the feature of its high-strength light under the concrete constraint in outside, provides good constraint to the inner concrete of stem stem 3 simultaneously.Coupled column 1 section form can be square, certainly can also adopt rectangle and T shape, wherein T shape as shown in figure 14, in present embodiment, stem stem 3 is concrete-filled circular steel tube column.The shear connector of anti-concrete slippage is set in steel pipe or FRP pipe surrounding.In stem stem 3, can adopt high-strength or super high strength concrete, also can equally with outside adopt conventional concrete, can greatly improve the axial compression performance of stem stem 3, present embodiment adopts conventional concrete; The vertical muscle of the surrounding in coupled column 3 outsides and stirrup adopt HRB400 level or HRB500 level, and for preventing that post surface local concrete people is for causing that peeling off rear vertical muscle exposes and destroyed, vertical muscle does not adopt nonmetal FRP muscle.For guaranteeing the good of stem stem steel pipe and armored concrete post concrete binding, the distance that stem stem outer surface of steel tube circumferentially-spaced is certain is arranged peg.Also can prefabricated core column 3, then on-the-spot installation, shortens construction period.
In conjunction with Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, compound beam 2 section forms are rectangle, reinforcing bar 4 is H shaped steel, adopt the arranged in form of broken line in the tensile region of beam, in cross section, be asymmetric arrangement, arrange different with the shaped steel in conventional type steel concrete member, the H of span centre place shaped steel is positioned at the bottom of beam, the H of bearing place shaped steel is positioned at the top of beam, H shaped steel in Ultimate Loads lower section can enter surrender by total cross-section, the compressive strain that reaches capacity of edge, pressure zone concrete, give full play to the maximum efficiency of steel, the space that the H shaped steel of asymmetric arrangement takies in beam is little, and be connected coupling with stem stem 3 at Nodes.On H shaped steel, bottom flange place is provided with the shear connector of anti-concrete slippage.Arrangement prestress muscle 7 in compound beam 2, between presstressed reinforcing steel 7 and built-in H shaped steel, be furnished with associated and 2 kinds of forms of dereferenced, in correlation form, the layout of presstressed reinforcing steel 7 comprises shaped form and broken line type, presstressed reinforcing steel 7 is at reinforcing bar 4 or mould on the stiffening rib in bone and pass, shaped form is consulted Fig. 6, broken line type is consulted Fig. 7, in beam, on H shaped steel, keep at a certain distance away and arrange the transverse stiffener 5 of evagination, appropriate location on transverse stiffener 5 punches 10, as the keeper of presstressed reinforcing steel 7, in the time of construction, can locate presstressed reinforcing steel 7, thereby be convenient to the construction of presstressed reinforcing steel 7.In dereferenced form, the layout of presstressed reinforcing steel 7 adopts shaped form, as shown in Figure 2, present embodiment is dereferenced layout, presstressed reinforcing steel 7 is arranged in outside reinforcing bar 4, can produce uniform counter-force and offset part external load, the same with the layout of common prestressed concrete, need to carry out location, scene to presstressed reinforcing steel 7, be not subject to the constraint of stiffening rib 5 and affect.The transverse stiffener 5 of arranging on H shaped steel in beam, not only can be used as the keeper of presstressed reinforcing steel 7, and can guarantee the stability of H shaped steel, also plays connection function at H shaped steel broken line junction stiffening rib 5.
Compound beam of the present invention can also adopt moulds bone, moulds H shape bone and FRP transverse stiffener that bone can adopt FRP plate to form, and the presstressed reinforcing steel 7 in beam can be underrelaxation steel strand or pre-stress FRP muscle.
The present invention can be in beam H shaped steel or mould opened round on bone web, hexagon or octagonal hole 10, make the polygonal beam of honeycomb type, the deadweight that can alleviate beam, Figure 18 is the honeycomb polygonal beam schematic diagram that hexagon punches.
In compound beam of the present invention, concrete divides two-layer building, and bottom is built conventional concrete, and high-strength concrete is built on upper strata, forms special strong concrete compound beam.
Broken line type H shaped steel or mould bone and can be prefabricated in the factory, the on-the-spot mixed connection method that adopts welding and bolt of installing of H shaped steel, the connecting method of built-in shaped steel straightway is referring to Figure 16, and the connecting method of broken line is referring to Figure 17, and the on-the-spot mixed connection method that adopts bonding and bolt of installing of H shape bone.
The construction method of the present embodiment:
First carry out the basis of all frame set zygostyles 1 by design, simultaneously by the steel pipe in stem stem 3 or mould pipe and armored concrete post longitudinal reinforcement be reliably anchored in basis, the stirrup of colligation armored concrete post, after all frame column colligations, the concrete of building stem stem and armored concrete post reaches the design height of bottom.
To stem stem steel pipe or mould pipe and splice, for keeping the steel pipe of Nodes or the continuous whole of moulding pipe, should avoid splicing at bean column node place, steel pipe or mould pipe through node splicing within the scope of the high 1/2-1/3 of two layers of post, ensure integrality, moment of flexure on this scope post is less simultaneously, is applicable to splicing.
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar 4 of beam-ends or mould bone with steel pipe in stem stem 3 or mould to manage by pair half snap ring connectors 6 and be reliably connected, then at the reinforcing bar 4 of assembled remainder successively or mould bone, if the reinforcing bar 4 of whole beam or mould bone and spliced again and be connected with stem stem 3, can bring very large trouble to construction, end is difficult for connecting.Then in the good position of specified design, transverse stiffener 5 is installed, if presstressed reinforcing steel 7 and reinforcing bar 4 or mould and between bone, adopt associated arrangement form, adopt the stiffening rib 6 of evagination, on it, will punch in advance, the hole line of centres and presstressed reinforcing steel linear (curve or broken line) on all stiffening ribs 5 are consistent; If adopt the arrangement form of dereferenced, stiffening rib 5 only plays the effect of monolithic stability, also need not punch thereon without evagination.Then arrangement prestress muscle 7 and corollary apparatus thereof, arranges vertical muscle in beam behind colligation location, in colligation beam and the stirrup of Nodes, and then beam column concreting, maintenance reaches after some strength, and stretch-draw and anchoring prestress muscle, form first floor frame system after form removal.
Built-in asymmetrical shaped steel/FRP prestressed concrete compound beam 2 can adopt special strong concrete compound beam, in beam, concrete divides 2 layers to build, bottom is built conventional concrete, high-strength concrete is built on upper strata, can give full play to concrete compressive property, it is high-strength concrete that compound beam 2 span centres bear pressure zone within the scope of positive bending moment, and tensile region is more low intensive concrete, can greatly improve the supporting capacity of compound beam; The high-strength concrete on beam top may extend into Nodes, and presstressed reinforcing steel 7 stretch-draw and anchoring are positioned at top just, can increase the ability that concrete anti-office presses.
Then construct the successively frame system of other layers, until top layer, top layer stem stem 3 stretches out the certain distance of top layer, guarantees that top layer stem stem 3 can fully bear the effect of tension and compression internal force.
Embodiment 2:
The coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem has built-in asymmetrical reinforcing bar or moulds the armored concrete coupled column 1 of bone prestressed concrete compound beam 2, built-in stem stem 3, compound beam 2 is horizontally set between coupled column 1, and the two adopts node to connect in intersection; Stem stem 3 is steel core concrete column or FRP pipe concrete column; Stem stem 3 is placed in armored concrete post; Compound beam 2 section forms are rectangle, reinforcing bar 4 or to mould bone be H type, reinforcing bar 4 or mould bone transverse stiffener 5 is set, span centre place reinforcing bar 4 or mould the position of bone in the bottom of compound beam 2, bearing place reinforcing bar 4 or mould the position of bone in the top of compound beam 2, presstressed reinforcing steel 7 is arranged in compound beam 2 along its length; Bean column node place presstressed reinforcing steel 7 passes from the both sides of stem stem 3, in combination styletable stretch-draw and anchoring, and the H shaped steel bone in compound beam 2 or mould bone with steel pipe in stem stem 3 or mould to manage and be connected.
In the present embodiment, in the stem stem 3 of coupled column, build high-strength concrete, armored concrete post adopts conventional concrete, forms special strong concrete coupled column, can further improve the axial compression performance of post, can make such column cross-section size less under same external force.
The construction method of the present embodiment:
First carry out the basis of all frame set zygostyles 2 by design, simultaneously by the steel pipe in stem stem 3 or mould pipe and armored concrete post longitudinal reinforcement is reliably anchored in basis, splicing steel pipe or mould pipe, connects the vertical muscle of armored concrete post, colligation stirrup, formwork supporting plate.
Because stem stem is different with the concrete of outside arrangement of reinforcement post, for avoiding building entanglement, adopt and first build the concrete construction method of stem stem after-pouring armored concrete post, stem stem 3 concreting positions are uncontrolled, and outside armored concrete post concreting need reach the height designing, this height need be less than one deck bottom elevation.
To stem stem steel pipe or mould pipe and splice, for keeping the steel pipe of Nodes or the continuous whole of moulding pipe, should avoid splicing at bean column node place, steel pipe or mould pipe through node splicing within the scope of the high 1/2-1/3 of two layers of post, ensure integrality, moment of flexure on this scope post is less simultaneously, is applicable to splicing.Then build stem stem 3 high-strength concretes.
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar 4 of beam-ends or mould bone with steel pipe in stem stem 3 or mould to manage by pair half snap ring connectors 6 and be reliably connected, then at the reinforcing bar 4 of assembled remainder successively or mould bone, if the reinforcing bar 4 of whole beam or mould bone and spliced again and be connected with stem stem 3, can bring very large trouble to construction, end is difficult for connecting.Reinforcing bar 4 or mould bone and steel pipe in stem stem 3 or mould pipe is connected intact and splice after, transverse stiffener 5 is installed in the position that specified design is good on beam, if presstressed reinforcing steel 7 and reinforcing bar 4 or mould and between bone, adopt associated arrangement form, adopt the stiffening rib 5 of evagination, and on to punch in advance, the hole line of centres and presstressed reinforcing steel linear (curve or broken line) on all stiffening ribs 5 are consistent; If adopt the arrangement form of dereferenced, stiffening rib 5 only plays the effect of monolithic stability, also need not punch thereon without evagination.Then arrangement prestress muscle 7 and corollary apparatus thereof, arranges vertical muscle in beam behind colligation location.Simultaneously in the vertical muscle of colligation armored concrete post and stirrup, beam and the stirrup of Nodes, then concreting, maintenance reaches after some strength, and stretch-draw and anchoring prestress muscle, form first floor frame system after form removal.
Then according to construct the successively frame system of other layers of above-mentioned sequence of construction, until top layer, top layer stem stem 3 stretches out the certain distance of top layer, guarantees that top layer stem stem 3 can fully bear the effect of tension and compression internal force.
Embodiment 3:
The coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem has built-in asymmetrical reinforcing bar or moulds the armored concrete coupled column 1 of bone prestressed concrete compound beam 2, built-in stem stem 3, compound beam 2 is horizontally set between coupled column 1, and the two adopts node to connect in intersection; Stem stem 3 is steel core concrete column or FRP pipe concrete column; Stem stem 3 is placed in armored concrete post; Compound beam 2 section forms are rectangle, built-in reinforcing bar 4 or to mould bone be H type, reinforcing bar 4 or mould bone transverse stiffener 5 is set, span centre place reinforcing bar 4 or mould the position of bone in the bottom of compound beam 2, bearing place reinforcing bar 4 or mould the position of bone in the top of compound beam 2, presstressed reinforcing steel 7 is arranged in compound beam 2 along its length; Bean column node place presstressed reinforcing steel 7 passes from the both sides of stem stem 3, in combination styletable stretch-draw and anchoring, and the H shaped steel in compound beam or mould bone and be fixedly connected with by two half snap ring connectors 6 with stem stem 3.
In the present embodiment, coupled column stem stem is prefabricated in the factory, and stem stem 3 is sectional, connects into an entirety by connection end 8, forms fabricated assembly overall coupled column, joint connection in site, reduction of erection time.Connection end 8 is made up of terminal pad and crab-bolt 11, crab-bolt 11 is arranged on the bottom surface of terminal pad, on terminal pad, be provided with the bolt hole for installing, terminal pad has two kinds, a kind of for being provided with the hole 9 for pouring into pea gravel concreten, it is arranged on the upper end of one section of stem stem 3, a kind of hole for not pouring into pea gravel concreten, and it is arranged on the lower end of one section of stem stem 3.
The present embodiment construction method is as follows:
First carry out the basis of all frame set zygostyles by design, simultaneously by the steel pipe in stem stem 3 or mould pipe and outside longitudinal reinforcement be reliably anchored in basis, splice steel pipe or mould 1/2 place of pipe to bottom column absolute altitude, start to build 1/2 place of high-strength concrete to bottom column absolute altitude, stem stem connection end crab-bolt 11 is reliably anchored in high-strength concrete simultaneously, by termination perforate fill with pea gravel concreten by steel pipe or mould pipe inner fill closely knit, steel pipe or mould pipe and weld or paste with connection end.Stem stem connection end 8 is formed by the steel plate with crab-bolt 11 or FRP plate, center perforate 9, and surrounding is accomplished fluently bolt hole, and crab-bolt 11 is made up of steel threaded bolt or FRP threaded bolt.
Then connect the vertical muscle of armored concrete post, colligation armored concrete column tie-bar, forms armored concrete post reinforcing cage, and after all coupled column 1 colligations, the concrete that starts to build armored concrete post reaches the design height of bottom, i.e. 1/2 place of bottom column absolute altitude.
Prefabricated core column 3, to steel pipe or mould pipe blanking, by the stem stem connection end 8 of not perforate and steel pipe or mould pipe and be connected and erect, build high-strength concrete, the stem stem connection end crab-bolt 11 of perforate is reliably anchored in high-strength concrete simultaneously, by termination perforate fill with pea gravel concreten by steel pipe or mould pipe inner fill closely knit, steel pipe or mould pipe and weld or paste with connection end, maintenance forms prefabricated core column 3.
Splice stem stem 3 at the scene of being transported to, prefabricated core column 3 is bolted, for keeping the reinforcing bar of Nodes or the continuous whole of moulding bone, should avoid stem stem splices at bean column node place, stem stem 3 splices within the scope of the 1/2-1/3 of two layers of post through node, ensured integrality, the moment of flexure on this scope post is less simultaneously, is applicable to splicing.
Nodes is installed two half snap ring connectors 6 on prefabricated core column, is convenient to afterwards with reinforcing bar 4 in beam or moulds bone be connected.
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar 4 of beam-ends or mould bone and be reliably connected with pair half snap ring connectors 6 on stem stem, then at the reinforcing bar 4 of assembled remainder successively or mould bone, if the reinforcing bar 4 of whole beam or mould bone and spliced again and be connected with stem stem 3, can bring very large trouble to construction, end is difficult for connecting.Reinforcing bar 4 or mould bone and after two half snap ring connectors 6 are connected intact and splicing on stem stem, transverse stiffener 5 is installed in the position that specified design is good on beam, if presstressed reinforcing steel 7 and reinforcing bar 4 or mould and between bone, adopt associated arrangement form, adopt the stiffening rib 5 of evagination, and on to punch in advance, the hole line of centres and presstressed reinforcing steel linear (curve or broken line) on all stiffening ribs 5 are consistent; If adopt the arrangement form of dereferenced, stiffening rib 5 only plays the effect of monolithic stability, also need not punch thereon without evagination.Then arrangement prestress muscle 7 and corollary apparatus thereof, behind colligation location, arrange vertical muscle in beam, the vertical muscle of armored concrete post and the stirrup of stirrup and Nodes outside the prefabricated core column of colligation simultaneously, then concreting, maintenance reaches after some strength, stretch-draw and anchoring prestress muscle, form first floor frame system after form removal.
Then according to construct the successively frame system of other layers of above-mentioned sequence of construction, until top layer, top layer stem stem 3 stretches out the certain distance of top layer, guarantees that top layer stem stem 3 can fully bear the effect of tension and compression internal force.
Claims (9)
1. the coupled column assembled beam frame of a built-in pipe high-strength concrete stem stem, it is characterized in that: the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem has built-in asymmetrical reinforcing bar or moulds the armored concrete coupled column (1) of bone prestressed concrete compound beam (2), built-in stem stem (3), compound beam (2) is horizontally set between coupled column (1), and the two adopts node to connect in intersection; Stem stem (3) is steel core concrete column or FRP pipe concrete column, and stem stem (3) outer wall arranges the shear connector of anti-concrete slippage, and stem stem (3) is placed in armored concrete post; Compound beam (2) section form is rectangle, built-in reinforcing bar (4) or to mould bone be H type, reinforcing bar (4) or mould bone transverse stiffener (5) is set, span centre place reinforcing bar (4) or mould the position of bone in the bottom of compound beam (2), bearing place reinforcing bar (4) or mould the position of bone in the top of compound beam (2), presstressed reinforcing steel (7) is arranged in compound beam (2) along its length; Bean column node place presstressed reinforcing steel (7) passes from the both sides of stem stem (3), in combination styletable stretch-draw and anchoring, and the H shaped steel in compound beam or mould bone and be fixedly connected with by pair half snap ring connectors (6) with stem stem (3).
2. the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem according to claim 1, it is characterized in that: in the stem stem (3) of described coupled column, build high-strength concrete, armored concrete post adopts conventional concrete, forms special strong concrete coupled column.
3. the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem according to claim 2, it is characterized in that: the H shaped steel in described compound beam (2) or mould bone and adopt honeycomb type polygonal beam, at compound beam (2) H shaped steel or mould on the web between bone transverse stiffener (5) and punch (10), cross section, hole is circle or hexagon or octagon.
4. according to the coupled column assembled beam frame of the built-in pipe high-strength concrete stem stem described in claim 1 or 2 or 3, it is characterized in that: the arrangement form of described presstressed reinforcing steel (7) in compound beam is shaped form or broken line type, presstressed reinforcing steel (7) is at reinforcing bar (4) or mould on the stiffening rib in bone and pass, presstressed reinforcing steel (7) and reinforcing bar (4) or to mould bone be correlation form.
5. according to the coupled column assembled beam frame of the built-in pipe high-strength concrete stem stem described in claim 1 or 2 or 3, it is characterized in that: the arrangement form of described presstressed reinforcing steel (7) in compound beam (2) is shaped form, presstressed reinforcing steel (7) is arranged in outside reinforcing bar (4), presstressed reinforcing steel (7) and reinforcing bar (4) or to mould bone be dereferenced form.
6. according to the coupled column assembled beam frame of the built-in pipe high-strength concrete stem stem described in claim 1 or 2 or 3, it is characterized in that: in described compound beam (2), concrete divides two-layer building, bottom is built conventional concrete, and high-strength concrete is built on upper strata, forms special strong concrete compound beam.
7. a construction method for the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem claimed in claim 1, is characterized in that: the construction method of the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem:
First carry out the basis of all frame set zygostyles by design, simultaneously by the steel pipe in stem stem (3) or mould pipe and armored concrete post longitudinal reinforcement be reliably anchored in basis, the stirrup of colligation armored concrete post, after all frame column colligations, the concrete of building stem stem and armored concrete post reaches the design height of bottom;
To stem stem (3) steel pipe or mould pipe and splice, steel pipe or mould pipe through node splicing within the scope of the high 1/2-1/3 of two layers of post;
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar of beam-ends (4) or mould bone with steel pipe in stem stem (3) or mould to manage by pair half snap ring connectors (6) and be reliably connected, then at the reinforcing bar of assembled remainder (4) successively or mould bone; Then in the good position of specified design, transverse stiffener (5) is installed, if presstressed reinforcing steel (7) and reinforcing bar (4) or mould and between bone, adopt associated arrangement form, adopt the stiffening rib (5) of evagination, on it, to punch in advance, the hole line of centres on all stiffening ribs (5) and presstressed reinforcing steel is linear is consistent; If adopt the arrangement form of dereferenced, stiffening rib (5) also need not punch thereon without evagination, only plays the effect of monolithic stability; Then arrangement prestress muscle (7) and corollary apparatus thereof, arranges vertical muscle in beam behind colligation location, in colligation beam and the stirrup of Nodes, and then beam column concreting, after maintenance, stretch-draw and anchoring prestress muscle, form first floor frame system after form removal;
When compound beam is special strong concrete compound beam, in beam, concrete divides 2 layers to build, and bottom is built conventional concrete, and high-strength concrete is built on upper strata, and the high-strength concrete on beam top may extend into Nodes, and presstressed reinforcing steel (7) stretch-draw and anchoring are positioned at top just;
Then construct the successively frame system of other layers, until top layer, top layer stem stem (3) stretches out the certain distance of top layer, guarantees that top layer stem stem (3) can fully bear the effect of tension and compression internal force.
8. a construction method for the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem claimed in claim 2, is characterized in that: the construction method of the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem:
First carry out the basis of all frame set zygostyles by design, by the steel pipe in stem stem (3) or mould pipe and armored concrete post longitudinal reinforcement is reliably anchored in basis, splicing steel pipe or mould pipe, connects the vertical muscle of armored concrete post simultaneously, colligation stirrup, formwork supporting plate;
First build stem stem after-pouring armored concrete post concrete, stem stem (3) concreting position is uncontrolled, and the concreting of armored concrete post need reach the height designing, and this height need be less than one deck bottom elevation;
To stem stem (3) steel pipe or mould pipe and splice, steel pipe or mould pipe through node splicing within the scope of the high 1/2-1/3 of two layers of post, then builds stem stem (3) high-strength concrete;
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar of beam-ends (4) or mould bone with steel pipe in stem stem (3) or mould to manage by pair half snap ring connectors (6) and be reliably connected, then at the reinforcing bar of assembled remainder (4) successively or mould bone; Reinforcing bar (4) or mould bone and steel pipe in stem stem or mould pipe is connected intact and splice after, transverse stiffener (5) is installed in the position that specified design is good on beam, if presstressed reinforcing steel (7) and reinforcing bar (4) or mould and between bone, adopt associated arrangement form, adopt the stiffening rib (5) of evagination, and on to punch in advance, the hole line of centres on all stiffening ribs (5) and presstressed reinforcing steel is linear is consistent; If adopt the arrangement form of dereferenced, stiffening rib (5) also need not punch thereon without evagination, only plays the effect of monolithic stability; Then arrangement prestress muscle (7) and corollary apparatus thereof, arranges vertical muscle in beam behind colligation location; Simultaneously in the vertical muscle of colligation armored concrete post and stirrup, beam and the stirrup of Nodes, then concreting, after maintenance, stretch-draw and anchoring prestress muscle, form first floor frame system after form removal;
While adopting special strong concrete compound beam, in beam, concrete divides 2 layers to build, and bottom is built conventional concrete, and high-strength concrete is built on upper strata, and the high-strength concrete on beam top may extend into Nodes, and presstressed reinforcing steel (7) stretch-draw and anchoring are positioned at top just;
Then according to construct the successively frame system of other layers of above-mentioned sequence of construction, until top layer, top layer stem stem (3) stretches out the certain distance of top layer, guarantees that top layer stem stem (3) can fully bear the effect of tension and compression internal force.
9. a construction method for the coupled column assembled beam frame of built-in pipe high-strength concrete stem stem claimed in claim 2, is characterized in that: the construction method of the coupled column assembled beam frame of this built-in pipe high-strength concrete stem stem:
First carry out the basis of all frame set zygostyles by design, simultaneously by the steel pipe in stem stem (3) or mould pipe and armored concrete post longitudinal reinforcement be reliably anchored in basis, splice steel pipe or mould 1/2 place of pipe to bottom column absolute altitude, start to build 1/2 place of high-strength concrete to bottom column absolute altitude, stem stem connection end crab-bolt (11) is reliably anchored in high-strength concrete simultaneously, by termination perforate fill with pea gravel concreten by steel pipe or mould pipe inner fill closely knit, steel pipe or mould pipe and weld or paste with connection end; Stem stem connection end (8) is formed by the steel plate with crab-bolt (11) or FRP plate, center perforate (9), and surrounding is accomplished fluently bolt hole, and crab-bolt (11) is made up of steel threaded bolt or FRP threaded bolt;
Then connect the vertical muscle of armored concrete post, colligation armored concrete column tie-bar, forms armored concrete post reinforcing cage, and after all frame column colligations, the concrete that starts to build armored concrete post reaches the design height of bottom, i.e. 1/2 place of bottom column absolute altitude;
Prefabricated core column (3), to steel pipe or mould pipe blanking, by the stem stem connection end (8) of not perforate and steel pipe or mould pipe and be connected and erect, build high-strength concrete, the stem stem connection end crab-bolt (11) of perforate is reliably anchored in high-strength concrete simultaneously, by termination perforate fill with pea gravel concreten by steel pipe or mould pipe inner fill closely knit, steel pipe or mould pipe and weld or paste with connection end, maintenance forms prefabricated core column (3);
Splice stem stem (3) at the scene of being transported to, and prefabricated core column (3) is bolted, and stem stem (3) splices within the scope of the 1/2-1/3 of two layers of post through node;
Nodes is installed two half snap ring connectors (6) prefabricated core column (3) is upper, is convenient to afterwards with reinforcing bar (4) in beam or moulds bone be connected;
H shaped steel or FRP in the good beam of prefabrication are moulded to bone and be transported to scene, first the reinforcing bar of beam-ends (4) or mould bone and be reliably connected with pair half snap ring connectors (6) on stem stem, then at the reinforcing bar of assembled remainder (4) successively or mould bone; Reinforcing bar (4) or mould bone and after two half snap ring connectors (6) are connected intact and splicing on stem stem, transverse stiffener (5) is installed in the position that specified design is good on beam, if presstressed reinforcing steel (7) and reinforcing bar or mould and between bone, adopt associated arrangement form, adopt the stiffening rib (5) of evagination, and on to punch in advance, the hole line of centres on all stiffening ribs and presstressed reinforcing steel is linear is consistent; If adopt the arrangement form of dereferenced, stiffening rib (5) also need not punch thereon without evagination, only plays the effect of monolithic stability;
Then arrangement prestress muscle (7) and corollary apparatus thereof, behind colligation location, arrange vertical muscle in beam, the vertical muscle of armored concrete post and the stirrup of stirrup and Nodes outside the prefabricated core column of colligation simultaneously, then concreting, after maintenance, stretch-draw and anchoring prestress muscle, form first floor frame system after form removal;
When compound beam (2) adopts special strong concrete compound beam, in beam, concrete divides 2 layers to build, and bottom is built conventional concrete, and high-strength concrete is built on upper strata, and the high-strength concrete on beam top may extend into Nodes, and tension of prestressed tendon and anchoring are positioned at top just;
Then according to construct the successively frame system of other layers of above-mentioned sequence of construction, until top layer, top layer stem stem (3) stretches out the certain distance of top layer, guarantees that top layer stem stem (3) can fully bear the effect of tension and compression internal force.
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| CN105908845A (en) * | 2016-05-16 | 2016-08-31 | 苏州市世好节能机械制造有限公司 | Connecting piece and steel pipe beam for building |
| CN106400960A (en) * | 2016-05-16 | 2017-02-15 | 苏州市世好节能机械制造有限公司 | Building framework |
| CN106968267A (en) * | 2017-03-28 | 2017-07-21 | 深圳市福田建安建设集团有限公司 | One kind combination strength stem and construction method |
| CN114348196A (en) * | 2022-01-13 | 2022-04-15 | 东北石油大学 | Fabricated FRP concrete combined guyed tower type lining foundation platform and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105908845A (en) * | 2016-05-16 | 2016-08-31 | 苏州市世好节能机械制造有限公司 | Connecting piece and steel pipe beam for building |
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| CN114348196B (en) * | 2022-01-13 | 2024-03-29 | 东北石油大学 | Assembled FRP concrete combined guy cable tower type lining foundation platform and construction method |
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