CN105756349A - Bracket pouring construction method for core cylinder beam column - Google Patents
Bracket pouring construction method for core cylinder beam column Download PDFInfo
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- CN105756349A CN105756349A CN201610169029.1A CN201610169029A CN105756349A CN 105756349 A CN105756349 A CN 105756349A CN 201610169029 A CN201610169029 A CN 201610169029A CN 105756349 A CN105756349 A CN 105756349A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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Abstract
The invention discloses a bracket pouring construction method for a core cylinder beam column. A bracket is formed by pouring concrete by taking a bracket base as a core; the bracket base comprises two horizontally arranged annular steel panels which are fixedly welded on the outer surface of a steel pipe column cylinder up and down at an interval; a section of I-shaped steel of which the cross section is I-shaped is fixedly and horizontally welded outwards in the peripheral direction of the annular steel panels; downward perforations allowing a tamping rod to be inserted therein are formed in the surface of the annular steel panel positioned on the upper side and the surface positioned on the upper side of the I-shaped steel; and during bracket concrete pouring, the tamping rod downwards penetrates through the perforations to enter the bracket base so as to perform concrete tamping at the joint, and pouring is completed. The bracket pouring construction method disclosed by the invention has the advantages that the strength of the bracket can be improved, the connecting quality of the core cylinder beam column and the beam is improved, and the construction efficiency is high.
Description
Technical field
The invention belongs to high building project construction field, be specifically related to a kind of Core Walls Structure beam column bracket pouring construction method.
Background technology
Core wall structure, belongs to high building structure.It is exactly simply that periphery is the frame stressing system being made up of beam column, and centre is cylinder (such as elevator), because cylinder is in centre, so being called Core Walls Structure, has another name called " framework core wall structure ".This kind of structure is advantageous to structure stress, and has extremely excellent shock resistance.It is the main flow version that high-rise building is widely used in the world.Meanwhile, the superiority of this structure also resides in can strive for as far as possible spacious use space, makes various assistant service space in the centralized of plane, makes the daylighting position that function of tonic chord volume exclusion is best, and reaches that sight line is good, the convenient effect of internal transportation.In core wall structure, as the beam column construction of main load effect, generally build with armored concrete, simultaneously need to possess higher intensity and load requirement.
Steel pipe column (i.e. steel core concrete column) refers to, fill concrete in steel pipe and formed and steel pipe and core concrete thereof can bear the architectural support structure component of external load effect jointly, different by section form, concrete filled steel tube and quadrate steel pipe column etc. can be divided into, in steel pipe column, the effect of contraction of its inner concrete is made concrete be in three dimension stress state by steel pipe, improves concrete comprcssive strength；The concrete of steel duct can be effectively prevented again steel pipe generation cripling.Research shows, the bearing capacity of steel pipe column is higher than corresponding steel pipe column bearing capacity and concrete column bearing capacity sum.Interaction between steel pipe and concrete makes the concrete destruction of steel duct be changed into plastic failure by brittle break, and the ductile performance of component is obviously improved, and energy dissipation capacity is greatly improved, and has superior anti-seismic performance.
Due to the above-mentioned advantage of steel pipe column, therefore the beam column construction of Core Walls Structure usually adopts steel pipe column structure to obtain in skyscraper especially high-rise building.But in skyscraper especially high-rise building, the Core Walls Structure beam column construction load adopting steel pipe column is big, and various aspects of performance requires height, therefore yet suffers from a lot of difficult point in design and work progress.
The application number that applicant once applied for is the patent of 201410392150.1, discloses a kind of Large-diameter Steel tubing string suspension column construction method of installation, and it is able to ensure that steel pipe column suspension column construction quality, it is possible to the suspension column for Core Walls Structure beam column construction steel pipe column is constructed.
When the steel pipe column subsequent construction of Core Walls Structure beam column construction, applicant considers the node structure that the bracket arranging the annular building composition using bracket basis for core on steel pipe column connects as steel pipe column and crossbeam, but how this bracket structure is arranged could be improved steel pipe column and crossbeam bonding strength better, becomes and has considered problem.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved is: how to provide one can improve bracket intensity, improves the quality of connection of Core Walls Structure beam column and crossbeam, the Core Walls Structure beam column bracket pouring construction method that efficiency of construction is high.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
A kind of Core Walls Structure beam column bracket pouring construction method, described bracket is constituted with bracket basis for core casting concrete, it is characterized in that, described bracket basis includes between the upper and lower every being fixedly welded on two pieces of steel pipe column tube outer surface in horizontally disposed annular steel facing, upper annular steel facing upper surface to lower endless steel facing lower surface distance less than bracket body thickness, annular steel facing external diameter is less than this body diameter of bracket, annular steel facing peripheral direction is horizontally outward welded with the i shaped steel that one section of cross section is I-shaped, i shaped steel thickness and width are respectively less than thickness and the width of crossbeam；Annular steel facing surface above and be positioned at i shaped steel uper side surface and be provided with the downward perforation for inserting for vibrating spear, when bracket concrete is built, pass downwardly through perforation by vibrating spear and enter into bracket basic internal, carry out the concrete vibrating at node place, complete to build.
So, bracket basis, bracket basis adopts doughnut-shaped steel plate processing shaped steel to constitute, the intensity of the follow-up annular bracket built and obtain can be improved better, i shaped steel is as the key foundation of transverse end head section, drastically increase the bond strength of crossbeam and bracket, improve architecture storey floor entirety weight capacity.When building simultaneously, adopt on annular steel facing surface and be positioned at i shaped steel uper side surface perforate and insert for vibrating spear and vibrate, the degree of compaction of Concrete Structure, improves node place structural strength, the concrete of intra-node can get rid of air by new hole-opening simultaneously, improves concrete pouring quality.
As optimization, perforation size is diameter 50mm, and perforation spacings is 100-200mm, the perforation of this dimensional requirement, it is possible to time better for follow-up building, vibrating spear inserts and vibrates, it is also possible to be more conducive to aerofluxus when vibrating, simultaneously it can be avoided that the perforation impact on structural strength.
Further, the annular steel facing upper surface level linking of i shaped steel upper surface and top, the annular steel facing lower surface level linking of i shaped steel lower surface and lower section, improves the globality on bracket basis better to ensure final bracket intensity.Further, i shaped steel is welded with some along the outward extending beam steel of i shaped steel length direction, so facilitates setting and the subsequent construction of beam steel.Further, beam steel is fixedly welded on the position on the respective uper side surface in i shaped steel upper and lower to facilitate welding procedure and fixing point conveniently to vibrate after being positioned at follow-up building, and structural strength is high, is beneficial to the final Building Structure Strength of raising.Further, i shaped steel outer surface is also arranged with some stirrups in the width direction, and stirrup is intervally arranged along i shaped steel length direction；So can improving subsequent structural intensity better, stirrup both sides can also weld the waist muscle extended along i shaped steel length direction further simultaneously, to improve structural strength further.Further, annular steel facing between i shaped steel is also associated with some card muscle, in the middle part of card muscle vertically arranged and card muscle upper end bend inwards after clamping be welded and fixed annular steel facing upper surface up, card muscle lower end bend inwards after clamping and be weldingly fixed on lower section annular steel facing lower surface, card muscle annularly steel facing outer surface arc uniform interval is arranged, card muscle middle part inner surface is also welded with some arched ribs in the horizontal direction, arched ribs middle part is in the arc consistent with annular steel facing outer surface radian, arched ribs two ends are fixedly connected on after being folded to along i shaped steel side on waist muscle, arched ribs is uniformly distributed along short transverse.So can improve the follow-up bracket obtained structural strength of position between crossbeam and the structure bonding strength between crossbeam and bracket better.
As optimization, before described bracket pouring construction, adopting BIM technology to realize the foundation to each component model in bracket basis and to each component blanking, complete the welding of the annular steel facing in the outer bracket basis of steel pipe column casing and i shaped steel, after completing construction material inspection, transport is to on-the-spot；First having set up the support of bracket place floor crossbeam and floor slab construction before building, relying on support is the supporting installation that platform first completes the bottom surface mould of bracket mould, then completes the welding of other component in bracket basis or install fixing；The supporting of the side mould then completing bracket mould again is installed, and wherein side mould includes the arc mould for forming bracket body arcuate side surface between crossbeam；Then building of bracket mould inner concrete is completed；Then after maintenance, form removal obtains bracket structure.
So, above-mentioned construction method is adopted to obtain this bracket structure, can so that each step overall arrangement, to save the time, improve efficiency of construction, wherein annular steel facing and i shaped steel belong to large-scale component in advance ground welding complete, facilitate welding operation and be beneficial to same steel pipe column casing complete together handling install.The small members such as other beam steels, stirrup, waist muscle, card muscle and arched ribs adopt Site Welding to install, it is possible to better ensure that its installation site dimensional requirement, with the building structure quality that guarantee obtains.Weld again after first completing the supporting installation of bottom surface mould, it is possible to by bottom surface module masking pad lower position, improve welding operation safety.
As optimization, described arc mould includes the arc formwork that overall radian is consistent with bracket bodies side surface radian, some vertically arranged flitch parts it are fixedly connected with outside arc formwork, being fixedly connected with the horizontally disposed curved steel tube consistent with arc formwork radian outside flitch part, wherein arc formwork is fixed on flitch part to obtain after being bent by monoblock rectangle template.
So, this arc mode structure is simple, and can be obtained by the planar rectangular template conversion formed, and takes full advantage of waste and old template and steel pipe, improves stock utilization while reaching prescription.
Further, adopting and nail between rectangle template and flitch part, curved steel tube includes vertically arranged side by side at least two, and is vertically fixedly connected with between curved steel tube and vertically strengthens steel pipe.
Specifically, the arc mould of said structure, it is possible to obtained by lower section method step:
(1) utilize BIM technology to set up the model of bracket basis segmental arc template, draw the technical parameter that template is processed, guide workman that template is processed and making.
(2) the common scaffolding steel pipe adopting on-the-spot specification to be Ф 48.3 × 3.6mm, the radian according to bracket segmental arc, utilizes the bending machine apparatus processing of specialty to go out to meet the curved steel tube of needs.
(3) according to bracket height H, process vertical identical with bracket height of length and strengthen that steel pipe is several and flitch is several.
(4) vertical steel pipe of strengthening is vertically arranged one along curved steel tube lateral arcs length direction every 300mm, utilizes fastener to be fastened with vertical steel pipe of strengthening by curved steel tube；Flitch is vertically arranged one along direction inside curved steel tube every 150mm, utilizes the steel wire with some strength and toughness flitch and curved steel tube to be fastened, it is ensured that fastening strength (does not namely offset) simultaneously.
(5) launch the size (arc length of segmental arc is the length of common templates, and bracket height H is the width of common templates) of rectangle according to bracket segmental arc, the rectangle template processing needs is stand-by.
(6) one end of rectangle template is directed at curved steel tube, it is placed in above flitch, nail is utilized rectangle template and flitch to be fixed, it is fixed from one end of curved steel tube to the other end successively, it is deformed into required radian by nail fixing extruding by force rectangle template, fixation procedure to ensure the perpendicularity of rectangle template.Rectangle template has been fixed along the radian direction of curved steel tube, has ultimately formed the cylinder bracket arc construction mould with some strength.
Further, before nail is fixing, first template is heated to 80-150 DEG C and be coated with spread releasing agent, so, template is generally timber, is beneficial to its bending and avoids breaking in required arc after softening of heating, smearing release agent after simultaneously heating, being beneficial to releasing agent and infiltrate into template surface, improve surface flatness and be beneficial to the follow-up demoulding, releasing agent also is able to gap that filling template bending causes and avoids breaking simultaneously.Releasing agent can be bought existing releasing agent product or adopt fluid to obtain.
In sum, the present invention has can improve bracket intensity, improves the quality of connection of Core Walls Structure beam column and crossbeam, high efficient construction.
Accompanying drawing explanation
Fig. 1 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, the structural representation sketch of the steel pipe column casing being externally provided with bracket basis of employing.
Fig. 2 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, the structural representation sketch building auxiliary device of employing.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, steel pipe column casing handling alignment procedures schematic diagram.
Fig. 5 can show the schematic diagram that the handling alignment of steel pipe column casing docking location adjusts supplementary structure in Fig. 4.
Fig. 6 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, the structural representation of a support arrangement of employing.
Fig. 7 is the structural representation of monolithic anchor ear sheet in Fig. 6.
Fig. 8 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, the structural representation of the preventer of employing.
Fig. 9 is the schematic diagram of independent top coat structure in Fig. 8.
Figure 10 is the schematic diagram of independent bottom surface layer structure in Fig. 8.
Figure 11 is in a kind of core tube of high-rise building beam column construction construction method that have employed the present invention, the structural representation of the arc mould of employing.
Detailed description of the invention
Below in conjunction with a kind of core tube of high-rise building beam column construction construction method that have employed the present invention and accompanying drawing, the present invention is described in further detail.
A kind of optimum embodiment of core tube of high-rise building beam column construction construction method, this construction method has included the step of the suspension column construction of steel pipe column, it is characterized in that, corresponding for quadrate steel pipe column structure on suspension column every layer of architecture storey is all designed a joint and constitutes more piece monolayer steel pipe post, complete often joint monolayer steel pipe post construction successively from top to bottom, often adopt the steel pipe column casing being externally provided with bracket basis during the construction of joint monolayer steel pipe post and complete the construction of bracket on this layer of steel pipe column.
So, when core tube of high-rise building beam column construction is constructed, the mode of steel pipe column is adopted to constitute beam column construction, it is possible to ensure have good structural strength, meet skyscraper load bearing support requirement.Steel pipe column is designed as corresponding first floor and designs a joint, constructs successively from top to bottom, and often joint steel pipe column is outside equipped with bracket basis, is beneficial to the construction leaning on bracket to realize the crossbeam to this floor and floor, is beneficial to raising building integral construction efficiency.
In present embodiment, described bracket is constituted with bracket basis for core casting concrete, and bracket includes the bracket body of annular, and bracket body surrounding horizontally outward extends the crossbeam connecting four rectangular in cross-section, has forward extended beam steel in crossbeam.
So, bracket basis can facilitate the setting of bracket and improve intensity, and bracket adopts loop configuration, it is possible to increase crossbeam and steel pipe column junction bonding strength.Simultaneously, it is achieved that the combinative structure form of steel core concrete column and reinforced beam, shock resistance is higher, it is possible to is effectively ensured the transmission of Vierendeel girder internal force, reaches designing requirement.
In present embodiment, described bracket basis is as shown in Figure 1, including between the upper and lower every being fixedly welded on two pieces of steel pipe column casing 1 outer surface in horizontally disposed annular steel facing 2, upper annular steel facing upper surface to lower endless steel facing lower surface distance less than bracket body thickness, annular steel facing 2 external diameter is less than this body diameter of bracket, annular steel facing 2 peripheral direction is horizontally outward welded with the i shaped steel 3 that one section of cross section is I-shaped, and i shaped steel 3 thickness and width are respectively less than thickness and the width of crossbeam.
So, bracket basis adopts doughnut-shaped steel plate processing shaped steel to constitute, it is possible to improving the intensity of the follow-up annular bracket built and obtain better, i shaped steel is as the key foundation of transverse end head section, drastically increase the bond strength of crossbeam and bracket, improve architecture storey floor entirety weight capacity.
In the bracket basis of present embodiment, the annular steel facing upper surface level linking of i shaped steel 3 upper surface and top, the annular steel facing lower surface level linking of i shaped steel 3 lower surface and lower section, improves the globality on bracket basis better to ensure final bracket intensity.Further, i shaped steel 3 is welded with some along the outward extending beam steel 4 of i shaped steel length direction, so facilitates setting and the subsequent construction of beam steel.Further, beam steel 4 is fixedly welded on the position on the respective uper side surface in i shaped steel 3 upper and lower to facilitate welding procedure and fixing point conveniently to vibrate after being positioned at follow-up building, and structural strength is high, is beneficial to the final Building Structure Strength of raising.Further, i shaped steel 3 outer surface is also arranged with some stirrups 5 in the width direction, and stirrup 5 is intervally arranged along i shaped steel length direction；So can improving subsequent structural intensity better, stirrup 5 both sides can also weld the waist muscle 6 extended along i shaped steel length direction further simultaneously, to improve structural strength further.Further, annular steel facing between i shaped steel 3 is also associated with some card muscle 7, in the middle part of card muscle 7 vertically arranged and card muscle upper end bend inwards after clamping be welded and fixed annular steel facing upper surface up, card muscle 7 lower end bend inwards after clamping and be weldingly fixed on lower section annular steel facing lower surface, card muscle 7 annularly steel facing outer surface arc uniform interval is arranged, card muscle 7 middle part inner surface is also welded with some arched ribs 8 in the horizontal direction, arched ribs 8 middle part is in the arc consistent with annular steel facing outer surface radian, arched ribs 8 two ends are fixedly connected on waist muscle 5 after being folded to along i shaped steel side, arched ribs 8 is uniformly distributed along short transverse.So can improve the follow-up bracket obtained structural strength of position between crossbeam and the structure bonding strength between crossbeam and bracket better.
In present embodiment, in described bracket basis, annular steel facing surface above and be positioned at i shaped steel 3 uper side surface and be provided with the downward perforation 9 for inserting for vibrating spear.As such, it is possible to be beneficial to bracket pouring construction better, improve bracket pouring quality.As optimization, perforation 9 is sized to diameter 50mm, perforation spacings is 100-200mm, the perforation of this dimensional requirement, can better for follow-up building time vibrating spear insert and vibrate to improve the pouring quality of node concrete, it also is able to the aerofluxus being more conducive to when vibrating, simultaneously it can be avoided that the perforation impact on structural strength.
In present embodiment, often the construction of joint monolayer steel pipe post specifically includes following steps:
A, employing BIM technology realize the foundation to each component model of monolayer steel pipe post and to each component blanking, complete the welding of the annular steel facing in the outer bracket basis of steel pipe column casing and i shaped steel, and after completing construction material inspection, transport is extremely on-the-spot；
B, complete steel pipe column casing on-site hoisting welding；
C, set up the support for completing this layer of steel pipe column place floor crossbeam and floor slab construction；
D, dependence support are the supporting installation that platform first completes the bottom surface mould of bracket mould, then complete the beam steel in bracket basis, stirrup, waist muscle, card muscle and the respective welding of arched ribs or install fixing；This process synchronously completes the concreting in steel pipe column casing；
E, complete again bracket mould side mould supporting install, wherein side mould includes the arc mould for forming bracket body arcuate side surface between crossbeam；
F, complete building of bracket mould inner concrete；
Form removal after g, maintenance.
In above-mentioned a step, namely BIM technology refers to BIM technology, it it is a kind of datumization instrument being applied to engineering design construction management, the relevant information of various project is integrated by parameter model, the lifecycle process of project planning, operation and maintenance carries out share and transmit, make engineers and technicians that various architecture informations to be made correct understanding and efficiently reply, for the existing mature technology of design team and the basis of each side's construction bodies offer collaborative work including building unit of operation.This technology is adopted to complete modelling, utilize BIM technology auxiliary steel pipe column annular bracket blanking with assembled, improve blanking and the installation accuracy of steel pipe bracket, by BIM technology, reinforced beam is carried out pre-aligned with Large-size rebar in annular bracket connecting node simultaneously, determine the particular location between reinforcing bar and steel plate, it is effectively ensured the structural strength at node place, it is possible to better ensure that follow-up construction quality intensity meets requirement.
So, described work progress, to each step overall arrangement, can the step of simultaneously operating be synchronously performed, to save the time, improve efficiency of construction, wherein annular steel facing and i shaped steel belong to large-scale component in advance ground welding complete, facilitate welding operation and be beneficial to same steel pipe column casing complete together handling install.The small members such as other beam steels, stirrup, waist muscle, card muscle and arched ribs adopt Site Welding to install, it is possible to better ensure that its installation site dimensional requirement, with the building structure quality that guarantee obtains.Weld again after first completing the supporting installation of bottom surface mould, it is possible to by bottom surface module masking pad lower position, improve welding operation safety.
Above-mentioned a step, during construction, specifically can include procedure below.A1, preparation construction drawing, set up steel pipe column casing (including bracket basis) model by the BIM engineer of specialty, and according to the relation between reinforced beam and bracket basis, draw rebar model, it is determined that reinforcement welding position.Do good material to prepare simultaneously.The steel pipe column casing of steel pipe column adopts Q345-B steel (killed steel), and otic placode adopts Q235-B steel (killed steel).Selection of electrodes E4315, E4316 and E5015, E5016 type series welding rod.A2, the inspection of raw and process materials；Steel pipe column casing adds man-hour in factory, controls the original material amount such as steel, welding rod well, requires to configure in strict accordance with design drawing, and carries out checking and accepting；After the steel pipe column casing processed is transported to scene, will carrying out the secondary check of size, outward appearance, steel tube component overall dimensions (such as diameter, length, mouth of pipe circularity etc.) tolerance must not exceed code requirement, rechecks the satisfied design of result and code requirement can use.A3, steel pipe column casing make and transport；TeklaStructures is adopted to carry out the Deepen Design of steel pipe column casing, check that design is omitted and mistake, and processing drawing is provided out and respectively builds quantities, factory's size according to component each in blanking table, the processing staff appointing specialty is processed and making, entirety is assembled after completing again.After steel pipe column casing machines, adopt 20t transport vehicle to transport, and carry out finished product protection work.The blanking of a4, beam steel, stirrup, waist muscle, card muscle and arched ribs, according to the model of each reinforcing bar and construction drawing, it is determined that the specification of reinforcing bar and quantity, particularly beam steel and arched ribs, and then the installation order according to reinforcing bar is numbered and sorts out.
Described b step, it is possible to being that field joint weldering adopts artificial weldering, interface weld seam is penetration second-order weld, and gradation weldering is full, to ensure welding quality.
In described step c, it is possible to be support when setting up, according to section of beam size, use PKPM software to be calculated, it is determined that form bracing system, it is ensured that plank sheathing uniform force and construction safety.Steel pipe column bracket Curved beam is considered, unified layout, all adopt 48.3mm × 3.6mm steel tube fastener formula scaffold, first steel pipe column bracket Curved beam plank sheathing horizontal fixed mount is considered during design arrangement, beam-slab bracing system frame is adjusted arranging with plank sheathing, and each vertical pole ' s span, step pitch must are fulfilled for the requirements of design.
In described Step d, can be before beam steel, stirrup, waist muscle, card muscle and the respective welding of arched ribs or installing, reinforcing bar welder should according to the welding procedure order of beam steel with bracket base node, the reinforcing bar descended in advance is transported to welding position, during welding, reinforcing bar welder, according to the position relationship between reinforcing bar and bracket basic model, carries out accurate settingout at the scene.For ensureing the welding quality of reinforcing bar and bracket basis, it is possible to when welding procedure, carry out same condition test specimen, and carry out system of real name registration, on test specimen, namely indicate name and the weld interval of welder.During beam steel welding, adjacent two longitudinal reinforcements to be staggeredly arranged, and takes welding by both sides to construct, fusion length >=5d, weld width >=0.6d, throat depth >=0.35d, when respective location adopts two-sided welding relatively difficult, can taking single-sided welding, weld length is >=10d.
In described Step d; when carrying out the welding of each reinforcement component on bracket basis; bracket reinforcement foundation welding masking structure can be arranged protect; bracket reinforcement foundation welding masking structure includes a circle and covers cloth and cover cloth and prop up support arrangement; described cover cloth to prop up support arrangement identical and be fixed on the steel pipe column casing above bracket position with on the support device structure adopted in b step, cover cloth and hang to be located at and cover cloth and prop up support arrangement surrounding and shield surrounding position, each reinforcement welding place, bracket basis.As such, it is possible to shield welding position, it is to avoid welding process by wind affects, and also avoids welding operation to have influence on operative around, it is ensured that welding quality also improves Welding Safety.
In Step d, synchronously complete the detailed process of concreting in steel pipe column casing, can be adopt C60 plain concrete at steel pipe column casing inner concrete, inside mix ZP extender (controlling expansion rate is 2 to two/10000ths five), cast blanking can be carried out with the auxiliary device (being equivalent to tumbling barrel) of building with φ 200 glue conduit, when concreting, the maximum height of one-time-concreting is 2m(and every floor divide 3 times build), next layer concrete is built after fully vibrating, build last layer concrete, two-layer is concrete builds interval time less than the concrete presetting period.As such, it is possible to quickly get rid of the concrete heat of hydration, improve post inner concrete intensity, better ensure that the pouring quality of steel pipe column casing inner concrete, and make it build consuming time can control to synchronize in the operation deadline at other, to improve efficiency.It addition, in order to improve efficiency, when building in steel pipe column casing, it is possible to will be around staggers the time in the steel pipe column casing of the adjacent steel tubing string of building core cylinder builds, to save time manpower better, lifting construction efficiency.
Additionally, in Step d, the concreting blanking built in auxiliary device auxiliary steel pipe column casing can be adopted, described build auxiliary device as Figure 2-3, can cover including one piece to be supported in steel pipe column casing 1(Fig. 2 and not show steel pipe column casing) gripper shoe 10 of upper end, offer a diameter in the middle part of gripper shoe 10 and be connected to a glue conduit 11 less than the connecting hole of steel pipe column casing 1 diameter Downward match, gripper shoe 10 is provided with a funnel 12 upward above, and described connecting hole is positioned in the middle part of funnel 12.So, during the concreting in steel pipe column casing, it is possible to gripper shoe is set aside to steel pipe column casing upper port, the concrete being stirred is poured in funnel by tower crane and suspension bucket conveying and flows downward to bottom steel pipe column casing along glue conduit, completes casting concrete blanking.Avoiding directly pouring concrete into can be excessive too high due to steel pipe column casing, causes concrete to fall rear bleeding and produces layering, affects pouring quality.Adopt funnel and glue conduit, not only facilitate concrete to pour into, and the guiding effect of glue conduit ensure that concrete will not bleeding, it is ensured that build effect.Further, gripper shoe 10 adopts the rectangle template that broadside is sized larger than steel pipe column casing external diameter to obtain, and so conveniently implements and with low cost, is beneficial to manufacture.Further, glue conduit 11 adopts the glue conduit of diameter 200mm, it is ensured that concrete has bigger blanking efficiency, can have again and guide effect preferably, and when being poured into top position, it is possible to cut short glue conduit easily and upwards build to adapt to build be in progress.Further, glue conduit 11 upper end extends transversely through and is provided with two in criss-cross spacer bar 13, and is fixed to above the connecting hole of gripper shoe 10 by spacer bar 13 support mounting.It is so owing to this connects without sealing, therefore adopts spacer bar to connect that simple in construction, and facilitate site operation is also beneficial to follow-up operation when needing to cut short glue conduit simultaneously.Further, described funnel 12 horizontal direction rectangular in cross-section, after so convenient employing template cutting, concatenation construction obtains, and is beneficial to execute-in-place and prepares.
In f step, have employed in bracket basis, annular steel facing surface above and be positioned at i shaped steel uper side surface and be respectively provided with the technology of perforation.During concreting, small-sized vibrating spear can enter into bracket basic internal by perforation, carries out the concrete vibrating at node place, the degree of compaction of Concrete Structure, improving node place structural strength, the concrete of intra-node can get rid of air by new hole-opening simultaneously, improves concrete pouring quality.
In g step, it is possible to be take curing in the mold mode, make concrete surface not dehydration, be in moisture state.Effectively prevent the appearance of the concrete early stage easy dehydration in surface and cracking phenomena.Before form removable, it is possible to carry out pressure testing with the test block under condition, treat that concrete strength arrives 100% and can propose form removal application.Before form removal, each side of reply participation dismounting work carries out written safe practice and tells somebody what one's real intentions are.Should remove in strict accordance with the principle of " rear first tear open, first prop up and tear open afterwards " during dismounting.
In present embodiment, described b step completes, in the process of on-site hoisting welding of steel pipe column casing, to specifically include following little step:
B1, each it is welded with the four pieces of otic placodes horizontally outward extended being uniformly distributed circumferentially near end at the upper and lower two ends of steel pipe column casing, is positioned on the otic placode of upper end and is provided with lifting hole(eyelet)；
B2, the symmetrical binding in employing four-ply steel wire rope (φ 21) four directions connect the four pieces of otic placodes being positioned at steel pipe column casing upper end, are lifted to above mounted steel pipe column casing just to position by tower crane；
B3, make steel pipe column casing unsettled by tower crane load-bearing and between the mounted steel pipe column casing in lower section keep welding seam distance, adjust after unsettled steel pipe column casing position makes the mounted steel pipe column casing alignment leveling in itself and lower section, be weldingly fixed on by contiguous block fixing between upper end otic placode and the unsettled steel pipe column casing lower end otic placode of the mounted steel pipe column casing in lower section after remove the steel wire rope connecting tower crane；
B4, complete the butt welding of butt welded seam, be then cut out the otic placode of otic placode and the lower section mounted steel pipe column casing upper end of the steel pipe column casing lower end of construction, namely complete welding.
So, adopt unsettled setting to reserve weld seam to weld, it is ensured that between steel pipe column casing, joint can weld and completely leave no gaps, it is ensured that joint quality.Wherein, the otic placode set up before can facilitating the lifting of steel pipe column casing and follow-up adjustment alignment and welding fixing grade operate；Adopt the symmetrical binding connection of four-ply steel wire rope (φ 21) four directions to can ensure that lifting balance, be beneficial to alignment and connect；Tower crane load-bearing is adopted can conveniently to regulate alignment, lean against after the unsettled steel pipe column casing in top and lower section mounted steel pipe column casing alignment simultaneously be welded to connect between otic placode block fixed after dismantle the steel wire rope of tower crane and weld again, it can be avoided that rock during welding, it is ensured that welding quality.Finally cut off lower end otic placode and avoid affecting subsequent construction, when reservation upper end otic placode is installed for the follow-up steel pipe column casing in top.
In present embodiment, in step b1, steel pipe column casing lateral surface near top and bottom place each have two circumferentially on be separated by the vertically arranged control bus of radian of quadrant, when step b3 adjusts unsettled steel pipe column casing position, outer side-lower two theodolites of erection of control bus at unsettled steel pipe column casing, observed when two buses in the unsettled outside lower portion of steel pipe column casing all each align point-blank with two buses in the outside upper portion of mounted steel pipe column casing, lower section for benchmark with bus by theodolite, it is judged that unsettled steel pipe column casing position leveling.
So, two mutually orthogonal directions adopt theodolite to observe whether the bus judging to arrange all point-blank judges whether upper and lower steel pipe column casing is directed at below steel pipe column casing, can simple and fast and accurately auxiliary realize alignment judge, improve the degree of accuracy of steel pipe column casing alignment, the beam column axial line obtained after ensureing docking is consistent, it is ensured that beam column quality.
In present embodiment, in step b1, being arranged in four pieces of otic placodes of steel pipe column casing upper end, otic placode outer end also has the gripper shoe being fixedly installed straight up, and gripper shoe upper end exceeds position, steel pipe column casing upper surface and the part composition jack horizontal supporting portion exceeded；When adjusting unsettled steel pipe column casing position in step b3 simultaneously, two vertically arranged jack apical graftings, two otic placodes in the bottom of both sides, unsettled steel pipe column casing corresponding tilt direction and lower section have been installed steel pipe column casing top each just to two otic placodes between, again two horizontally disposed jack radially apical graftings have been installed between jack horizontal supporting portion and the lower side surfaces of unsettled steel pipe column casing of gripper shoe of two other otic placode of steel pipe column casing top in lower section, rely on and control the flexible of four jack, realize the adjustment to unsettled steel pipe column casing position and realize alignment leveling.
So, rely on up and down between two pairs of otic placodes of two vertically arranged jack apical grafting incline directions, two jack additionally along back position horizontal radial apical grafting at unsettled steel pipe column lower side surfaces, adjustment can be ejected conveniently by jack, the steel pipe column casing rotating inclined upward state makes it adjust to vertical state, have simple to operation and clamping reliable, regulate the feature that controllability is good.Then further, if two jack each apical graftings of level of relative can be abutted up in the side needing adjustment when needing horizontal position adjustment installed realization adjustment between the jack horizontal supporting portion of both sides, steel pipe column casing top and unsettled steel pipe column casing lower side surfaces in lower section, when needing height and position to adjust weld seam size, it is possible to installed in lower section and realize regulating between otic placode corresponding to steel pipe column casing top and unsettled steel pipe column casing bottom by four direction each arranges a vertical jack apical grafting respectively again.
Above-mentioned construction handling alignment procedures may refer to Fig. 4 and understands, simultaneously, in above-mentioned handling alignment procedures, namely outside steel pipe column casing, form handling alignment as shown in Figure 5 adjust supplementary structure, described handling alignment adjusts supplementary structure and includes be uniformly distributed circumferentially four pieces of otic placodes horizontally outward extended 14 that steel pipe column casing about 1 two ends are each welded near end, is positioned on the otic placode of upper end and is provided with lifting hole(eyelet).Thus convenient tower crane is adopted to carry out handling and can be beneficial to maintenance handling process steady.Then, being arranged in four pieces of otic placodes 14 of steel pipe column cylinder upper end further, otic placode outer end is also fixedly installed gripper shoe 15 straight up, and gripper shoe 15 upper end exceeds position, steel pipe column casing upper surface and the part composition jack horizontal supporting portion 16 exceeded.So, jack 17 is relied on to carry out tilt adjustments alignment with regard to convenient realization.Further steel pipe column casing 1 lateral surface near top and bottom place each arrange two circumferentially on be separated by the vertically extending control bus 18 of radian of quadrant outer side-lower two the theodolite (not shown) of erection of control bus at unsettled steel pipe column casing.Just can observe better and be adjusted to ensure that alignment is reliable.Additionally, during enforcement, can also be further, boatswain chair 19 straight up, described boatswain chair 19 lower end and the fixing welding of otic placode 14 are set in the otic placode 14 inner one end upper surface middle part being positioned at upper end, welding fixing with steel pipe column casing inside boatswain chair, described lifting hole(eyelet) is arranged on boatswain chair 19, so, more improve handling hitch point bonding strength, facilitate its stress to suspend in midair.
nullIn present embodiment，In step b2，Postpone when steel pipe column casing is lifted to positive para-position above mounted steel pipe column casing by tower crane，In lower section, mounted steel pipe column casing lateral surface arranges a support arrangement near upper end position，Described support device structure is referring to shown in Fig. 6-7，Anchor ear sheet 20 including two sections of arcs，Anchor ear sheet 20 arc is consistent with steel pipe column casing lateral surface arc and anchor ear sheet two ends stretch out formation anchor ear connecting portion 21，Anchor ear connecting portion is provided with bolt hole and docks by connecting bolt 22，After two sections of anchor ear sheets 20 are circumferentially closely attached on steel pipe column casing lateral surface relatively，The gap less than connecting bolt length is left between relative anchor ear connecting portion，And it is fixed to steel pipe column casing lateral surface for docking to hold anchor ear sheet tightly by connecting bolt traverse bolt hole，Every section of anchor ear sheet lateral surface is at least fixedly installed two horizontal support member horizontally outward extended 23.
So so that during b3 step, operator can carry out steel pipe column cylinder Levelling operation on standing support device under safety rope is protected.Further, horizontal support member 23 is welded to anchor ear sheet lateral surface obtains for supporting angle steel.Yet further, horizontal support member 23 outer end face has the mounting column 24 being fixedly installed straight up.
nullIn present embodiment，Step b4 carries out before butt welding，First a preventer is set on a support arrangement，Described protective device structure is referring to Fig. 8-10，Including the bottom surface layer structure 25 being positioned below and top coat structure 26 above，Bottom surface layer structure 25 includes ring outside the bottom surface inner annular element and bottom surface of the setting of steel pipe column casing circumferential lateral surface，Outside bottom surface inner annular element and bottom surface, between ring, level is fixedly connected with some bottom surfaces connector，Top coat structure 26 includes surrounding end face inner annular element and the outer ring of end face that steel pipe column casing circumferential lateral surface is arranged，Between end face inner annular element and the outer ring of end face, level is fixedly connected with some end face connectors，Some inner side studs 27 being uniformly distributed circumferentially also vertically it are fixedly connected with between described bottom surface inner annular element and end face inner annular element，Some outside studs 28 being uniformly distributed circumferentially also vertically it are fixedly connected with between ring and the outer ring of end face outside described bottom surface，Outside stud outer surface also surrounds to enclose and is provided with a circle protective cloth 29.
So, preventer can improve welding individual's processing safety, simultaneously protective cloth can windbreak function to ensure welding quality, also additionally be able to play shaded effect, prevent welding high light from leaking, effectively prevent light pollution and avoid the welding impact on other construction worker of lower section.
In present embodiment, the bottom surface layer structure 25 of above-mentioned preventer, top coat structure 26, inner side stud 27 and outside stud 28 are ferrous materials and prepare, and are weldingly connected to facilitate and ensure self-strength.Bottom surface layer structure 25 can also be laid one layer of asbestos cloth 31 further, to prevent welding spark from falling to impact lower section, lower section operative.Further, outside bottom surface, in ring, the mounting column of the horizontal support member outer end of a corresponding support arrangement is provided with the installing hole of coupling, facilitates preventer installation on a support arrangement to be located by connecting.Further, inner side stud 27 offering screw and is connected with carrying bolt 29, carrying bolt 29 is positioned at the two ends of screw and is each provided with a locking nut 30.As such, it is possible to after being installed to by preventer on a support arrangement, tighten carrying bolt and make its inner push against steel pipe column tube outer surface, then rotate against locking by two locking nuts；Can ensure that and be tightened to steel pipe column tube outer surface on preventer is circumferentially, reduce shake, improve high-altitude application safety and ensure welding quality.Protective cloth is colour bar cloth further, improves work high above the ground alarming effect.Further outside stud also circumferentially encloses mutually and be connected with safety rope 32, to improve high-altitude working safety better.
In present embodiment, in step e, for forming the structure of the arc mould of bracket body arcuate side surface between crossbeam referring to Figure 11, including the arc formwork 33 that overall radian is consistent with bracket bodies side surface radian, some vertically arranged flitch parts 34 it are fixedly connected with outside arc formwork 33, being fixedly connected with the horizontally disposed curved steel tube 35 consistent with arc formwork radian outside flitch part 34, wherein arc formwork 33 is fixed on flitch part 34 to obtain after being bent by monoblock rectangle template.
So, this arc mode structure is simple, and can be obtained by the planar rectangular template conversion formed, and takes full advantage of waste and old template and steel pipe, improves stock utilization while reaching prescription.
In present embodiment, adopt between arc formwork 33 and flitch part 34 and nail, conveniently realize the intensity bending forming of arc formwork.Curved steel tube 35 includes vertically arranged side by side at least two, and is vertically fixedly connected with vertical reinforcement steel pipe 36 between curved steel tube 35, supports bulk strength to ensure the bending force to rectangle template to improve.Fastener 37 is adopted to connect between steel pipe 36 as preferred curved steel tube 35 and vertical reinforcement, to facilitate attended operation.Steel wire 38 binding is adopted to connect between curved steel tube 35 and flitch part 34, while ensureing bonding strength, it is to avoid the excessive laminating affected between flitch part medial surface and arc formwork 33 of connector.It is connected to curved steel tube 35 outer surface so that it is avoid interference with being fitted and connected between flitch and arc formwork as preferably vertical steel pipe 36 of strengthening.
Specifically, the arc mould of said structure, it is possible to obtained by lower section method step:
(1) utilize BIM technology to set up the model of bracket basis segmental arc template, draw the technical parameter that template is processed, guide workman that template is processed and making.
(2) the common scaffolding steel pipe adopting on-the-spot specification to be Ф 48.3 × 3.6mm, the radian according to bracket segmental arc, utilizes the bending machine apparatus processing of specialty to go out to meet the curved steel tube of needs.
(3) according to bracket height H, process vertical identical with bracket height of length and strengthen that steel pipe is several and flitch is several.
(4) vertical steel pipe of strengthening is vertically arranged one along curved steel tube lateral arcs length direction every 300mm, utilizes fastener to be fastened with vertical steel pipe of strengthening by curved steel tube；Flitch is vertically arranged one along direction inside curved steel tube every 150mm, utilizes the steel wire with some strength and toughness flitch and curved steel tube to be fastened, it is ensured that fastening strength (does not namely offset) simultaneously.
(5) launch the size (arc length of segmental arc is the length of common templates, and bracket height H is the width of common templates) of rectangle according to bracket segmental arc, the rectangle template processing needs is stand-by.
(6) one end of rectangle template is directed at curved steel tube, it is placed in above flitch, nail is utilized rectangle template and flitch to be fixed, it is fixed from one end of curved steel tube to the other end successively, it is deformed into required radian by nail fixing extruding by force rectangle template, fixation procedure to ensure the perpendicularity of rectangle template.Rectangle template has been fixed along the radian direction of curved steel tube, has ultimately formed the cylinder bracket arc construction mould with some strength.
In present embodiment, before nail is fixing, first template is heated to 80-150 DEG C and be coated with spread releasing agent, so, template is generally timber, is beneficial to its bending and avoids breaking in required arc after softening of heating, smearing release agent after simultaneously heating, being beneficial to releasing agent and infiltrate into template surface, improve surface flatness and be beneficial to the follow-up demoulding, releasing agent also is able to gap that filling template bending causes and avoids breaking simultaneously.Releasing agent can be bought existing releasing agent product or adopt fluid to obtain.
Therefore said method can improve construction quality, ensure building intensity, alleviate the labor intensity of workman, improve the labor efficiency of workman, compared with traditional construction, having more convenient operation, construction quality is more reliable, the feature such as honest and clean lower in cost, there is bigger application value, be particularly suitable in skyscraper is particularly in high-rise building popularization and application.
Claims (7)
1. a Core Walls Structure beam column bracket pouring construction method, described bracket is constituted with bracket basis for core casting concrete, it is characterized in that, described bracket basis includes between the upper and lower every being fixedly welded on two pieces of steel pipe column tube outer surface in horizontally disposed annular steel facing, upper annular steel facing upper surface to lower endless steel facing lower surface distance less than bracket body thickness, annular steel facing external diameter is less than this body diameter of bracket, annular steel facing peripheral direction is horizontally outward welded with the i shaped steel that one section of cross section is I-shaped, i shaped steel thickness and width are respectively less than thickness and the width of crossbeam；Annular steel facing surface above and be positioned at i shaped steel uper side surface and be provided with the downward perforation for inserting for vibrating spear, when bracket concrete is built, pass downwardly through perforation by vibrating spear and enter into bracket basic internal, carry out the concrete vibrating at node place, complete to build.
2. Core Walls Structure beam column bracket pouring construction method as claimed in claim 1, it is characterised in that be welded with some along the outward extending beam steel of i shaped steel length direction in described bracket basis on i shaped steel.
3. Core Walls Structure beam column bracket pouring construction method as claimed in claim 1, it is characterised in that i shaped steel outer surface is also arranged with some stirrups in the width direction, and stirrup is intervally arranged along i shaped steel length direction.
4. Core Walls Structure beam column bracket pouring construction method as claimed in claim 3, it is characterised in that stirrup both sides can also weld the waist muscle extended along i shaped steel length direction further.
5. Core Walls Structure beam column bracket pouring construction method as claimed in claim 3, it is characterized in that, annular steel facing between i shaped steel is also associated with some card muscle, in the middle part of card muscle vertically arranged and card muscle upper end bend inwards after clamping be welded and fixed annular steel facing upper surface up, card muscle lower end bend inwards after clamping and be weldingly fixed on lower section annular steel facing lower surface, card muscle annularly steel facing outer surface arc uniform interval is arranged, card muscle middle part inner surface is also welded with some arched ribs in the horizontal direction, arched ribs middle part is in the arc consistent with annular steel facing outer surface radian, arched ribs two ends are fixedly connected on after being folded to along i shaped steel side on waist muscle, arched ribs is uniformly distributed along short transverse.
6. Core Walls Structure beam column bracket pouring construction method as claimed in claim 5, it is characterized in that, before described bracket pouring construction, BIM technology is adopted to realize the foundation to each component model in bracket basis and to each component blanking, completing the welding of the annular steel facing in the outer bracket basis of steel pipe column casing and i shaped steel, after completing construction material inspection, transport is to on-the-spot；First having set up the support of bracket place floor crossbeam and floor slab construction before building, relying on support is the supporting installation that platform first completes the bottom surface mould of bracket mould, then completes the welding of other component in bracket basis or install fixing；The supporting of the side mould then completing bracket mould again is installed, and wherein side mould includes the arc mould for forming bracket body arcuate side surface between crossbeam；Then building of bracket mould inner concrete is completed；Then after maintenance, form removal obtains bracket structure.
7. Core Walls Structure beam column bracket pouring construction method as claimed in claim 6, it is characterized in that, described arc mould includes the arc formwork that overall radian is consistent with bracket bodies side surface radian, some vertically arranged flitch parts it are fixedly connected with outside arc formwork, being fixedly connected with the horizontally disposed curved steel tube consistent with arc formwork radian outside flitch part, wherein arc formwork is fixed on flitch part to obtain after being bent by monoblock rectangle template.
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| CN110043053A (en) * | 2018-01-15 | 2019-07-23 | 上海宝冶集团有限公司 | More bracket localization methods |
| CN113529943A (en) * | 2021-07-21 | 2021-10-22 | 上海建工一建集团有限公司 | Concrete support and lattice column connecting device and method convenient to dismantle |
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| CN105756349B (en) | 2018-01-09 |
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