CN110259105A - Cantilever Beams and construction method - Google Patents

Cantilever Beams and construction method Download PDF

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Publication number
CN110259105A
CN110259105A CN201910498593.1A CN201910498593A CN110259105A CN 110259105 A CN110259105 A CN 110259105A CN 201910498593 A CN201910498593 A CN 201910498593A CN 110259105 A CN110259105 A CN 110259105A
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CN
China
Prior art keywords
screw
embedded sleeve
concrete
sleeve barrel
cantilever beams
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Granted
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CN201910498593.1A
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Chinese (zh)
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CN110259105B (en
Inventor
吴涛
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Yitao Construction Group Co.,Ltd.
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Hubei Yitao Construction Co Ltd
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Priority to CN201910498593.1A priority Critical patent/CN110259105B/en
Publication of CN110259105A publication Critical patent/CN110259105A/en
Application granted granted Critical
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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/40Separate connecting elements
    • E04B1/41Connecting devices specially adapted for embedding in concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls

Abstract

The present invention provides a kind of Cantilever Beams and construction method, including built-in fitting, and built-in fitting includes at least two embedded sleeve barrels, is fixedly connected between two embedded sleeve barrels by connecting plate, so as to keep preset spacing and angle between embedded sleeve barrel;One end of embedded sleeve barrel is used to connect with the screw flight that is fixedly welded that embedded bar in concrete welds, the other end of embedded sleeve barrel is threadedly coupled with connecting screw, hole and backing plate of the connecting screw on the base plate of Cantilever Beams are connect with nut, and base plate is fixedly connected with beam column.When construction, embedded sleeve barrel end face is adjacent to template, the position of embedded sleeve barrel end is found after demoulding, connecting screw is screwed into predetermined depth in embedded sleeve barrel;By pedestal sleeve-board on connecting screw, backing plate and nut are installed;The construction of Cantilever Beams is realized by above step.By using multiple embedded sleeve barrels, and determine the scheme of relative position between embedded sleeve barrel, it can be ensured that the pre-buried precision of embedded sleeve barrel reduces the difficulty of later period installation.

Description

Cantilever Beams and construction method
Technical field
The present invention relates to Cantilever Beams field for building, especially a kind of Cantilever Beams and construction method.
Background technique
When traditional suspension scaffold I-steel is installed, I-steel needs to be laid on flooring by shear wall, then is fixed with reinforcing bar In flooring, installation trouble, time-consuming, and labor intensity is high.When passing through shear wall, can destroy wall section causes design strength to be beaten Folding, and carpenter's formwork erection difficulty is caused to increase.It is even more difficult when dismounting, through an I-shaped outrigger sometimes two for shear wall Personal time half a day could remove, and there is also biggish security risks in work progress.Wall after dismounting generates more Hole influences construction quality, and the hole after repairing is also one of the root for causing leakage, and the fixation position of I-beam indoors exists It will also result in the leakage in upstairs house lower later period after dismounting, while also strong influence construction speed.
Also there is the scheme being fixed using pre embedded bolt in the prior art, but pre-buried screw rod needs are pierced by template Except, formwork erection installation is very troublesome.105113781 B of Chinese patent literature CN describes a kind of overhanging and sets a roof beam in place side pre-buried peace entirely Dress sets up device, and I-steel and pre-embedded device including connecting with concrete wall, the pre-embedded device packet is described Include the main pipe fittings being embedded in concrete walls body, the non-rotatable square nut that is fixed in main pipe fittings bottom, by rectangular spiral shell Female thread covers the plastic protection lid in main pipe fittings.The program the problem is that, main pipe fittings is embedded in concrete, pours completion Afterwards, construction personnel is difficult to find the pre-buried position of main pipe fittings.During casting concrete, main pipe fittings is also easy to move. Each Cantilever Beams are described in file is preferably provided two bolts, but the pre-buried precision of main pipe fittings is difficult to ensure, so as to cause Subsequent installation hole location is difficult to be aligned, and installation is more difficult, does not also use suitable rust preventing, there are security risks.Due to applying Work error or workpiece flaw, it is difficult to guarantee that the quality of each Cantilever Beams meets the requirements, bearing capacity and stability reach pre- Phase, which results in construction safety hidden danger.How the state of each Cantilever Beams, especially bolt are monitored in reasonable cost-range Deformation state, it is ensured that Cantilever Beams are safe and reliable, there is no preferable scheme at present.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of Cantilever Beams and construction methods, being capable of skill in the prior art Art problem, it is ensured that the pre-buried precision of embedded sleeve barrel reduces the difficulty of later period installation.In the preferred scheme, construction personnel can Easily search out the pre-buried position of embedded sleeve barrel.The deformation of Cantilever Beams can also be monitored with lower cost, in time discovery peace Full hidden danger.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of Cantilever Beams, including built-in fitting, in advance Embedded part includes at least two embedded sleeve barrels, is fixedly connected between two embedded sleeve barrels by connecting plate, so that between embedded sleeve barrel Keep preset spacing and angle;
One end of embedded sleeve barrel is used to connect with the screw flight that is fixedly welded that embedded bar in concrete welds, embedded sleeve barrel The other end is threadedly coupled with connecting screw, and hole and backing plate of the connecting screw on the base plate of Cantilever Beams are connect with nut, bottom Seat board is fixedly connected with beam column.
In preferred scheme, it is arranged in parallel between the embedded sleeve barrel, passes through multiple parallel connections between embedded sleeve barrel Plate is fixedly connected.
In preferred scheme, overlapping and arranged crosswise up and down between the embedded sleeve barrel, by more between embedded sleeve barrel A angle connecting plate is fixedly connected, and the axis in the hole on base plate overlaps up and down accordingly and arranged crosswise.
In preferred scheme, the one end of the embedded sleeve barrel on the outside of concrete is equipped with conical head, and embedded sleeve barrel leans on One end on the outside of nearly concrete is used to be adjacent to the medial surface of template.
In preferred scheme, it is equipped with locating ring in the one end of embedded sleeve barrel on the outside of concrete, locating ring is for interim Block the threaded hole of embedded sleeve barrel;
The end face of the one end of locating ring on the outside of concrete is equipped with instruction slot, and instruction slot is filled with solidifying for the water suction of water suction Glue;
Protrusion corresponding with instruction slot is equipped with close to the one side of concrete in base plate.
In preferred scheme, the end of the beam column is equipped with hinged seat, by pre-buried on the concrete below beam column Part is installed with screw sleeve hinged seat, and hinged seat and screw sleeve hinged seat are hinged with a screw sleeve respectively, two screw rods Sleeve is threadedly coupled with double threaded screw, and double threaded screw both ends thread rotary orientation is opposite;
Alternatively, the end of the beam column is equipped with attachment base, steel wire is installed with by built-in fitting on the concrete above beam column Rope attachment base, wirerope attachment base and attachment base are connect with one end of steel cable respectively, the other end of wirerope and tensioning Screw rod is fixedly connected, and two tensioning screws are threadedly coupled with the both ends of tensioning screw sleeve respectively, tensioning screw sleeve both ends spiral shell Line is oppositely oriented.
In preferred scheme, it is additionally provided with deformation monitoring safety device, deformation monitoring safety device is threadedly coupled with base plate, The monitor head of deformation monitoring safety device passes through base plate and connect with concrete, to monitor the distance between base plate and concrete Variation.
In preferred scheme, in the deformation monitoring safety device, monitoring screw is equipped with external screw thread, and monitoring screw is interior also Equipped with LED light, LED light is electrically connected with battery;
Monitoring screw is slidably connected with monitor head, spring is equipped between monitor head and battery, so that monitor head is protruding, and structure At electrical connection;
It monitors and is equipped with fixed contact in screw, fixed contact is electrically connected with LED light, and monitor head is equipped with the activity touching with elasticity Head;
Fixed contact is equipped with groove, and movable contact is equipped with protrusion, gap is equipped between protrusion and groove.
A kind of construction method using above-mentioned Cantilever Beams, comprising the following steps:
S1, built-in fitting is connect with screw flight is fixedly welded, embedded sleeve barrel end face is adjacent to template in built-in fitting, is welded fixed It connects screw rod and embedded bar is welded to connect, built-in fitting is fixedly connected with embedded bar;
S2, casting concrete find the position of embedded sleeve barrel end after demoulding, connecting screw is screwed into embedded sleeve barrel and is preset Depth;
S3, by pedestal sleeve-board on connecting screw, backing plate and nut are installed;
The construction of Cantilever Beams is realized by above step.
In preferred scheme, in step sl, it is additionally provided with the step of water absorbent gel is filled into positioning groove;
In step s3, the step of being additionally provided with using positioning groove positioning base plate;
After step s3, it is additionally provided with the step of installing deformation monitoring safety device, monitoring screw is screwed into the screw hole of base plate It is interior, until monitor head resists the surface of concrete, and contactless between movable contact and fixed contact.
A kind of Cantilever Beams provided by the invention by using multiple embedded sleeve barrels, and determine opposite position between embedded sleeve barrel The scheme set, it can be ensured that the pre-buried precision of embedded sleeve barrel reduces the difficulty of later period installation.Using by embedded sleeve barrel and pre-buried steel The scheme that muscle is fixedly connected further ensures that embedded sleeve barrel stress is reliable, greatly improves construction efficiency and safety.The cone of setting The tensile stress for being applied to concrete can be converted to compression compared with stepping type structure in the prior art by forming head structure, Improve the gripping strength of concrete.The locating ring of setting has multiple technical effects, and the water absorbent gel of filling can be absorbed and be robbed The moisture in concrete near taking by force, keeps the aquation of neighbouring concrete insufficient, and color has differences with surrounding concrete color, And intensity also will receive influence, search position convenient for construction personnel.Locating ring, which also has, prevents concrete from entering embedded sleeve barrel Interior effect.Instruction slot on locating ring during the installation process can also auxiliary positioning Cantilever Beams base plate.The deformation of setting Monitoring safety device can monitor the deformation of connecting screw, avoid leading to safety accident because of the reason of connecting screw deforms.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the structural schematic diagram of built-in fitting in the present invention.
Fig. 2 is structural schematic diagram of the built-in fitting in formwork erection in the present invention.
Fig. 3 is structural schematic diagram when built-in fitting is connect with Cantilever Beams in the present invention.
Fig. 4 is the Cantilever Beams structural schematic diagram of concrete angular position in the present invention.
Fig. 5 is the side view of cantilever beam support structure in the present invention.
Fig. 6 is the side view of Cantilever Beams tension structure in the present invention.
Fig. 7 is the top view of multiple Cantilever Beams in the present invention.
Fig. 8 is the structural schematic diagram of deformation monitoring safety device in the present invention.
Structural schematic diagram when Fig. 9 is deformation monitoring safety device monitoring in the present invention.
Figure 10 is the structural schematic diagram that deformation monitoring safety device monitors when bolt deforms in the present invention.
Structural schematic diagram when Figure 11 is deformation monitoring safety device not enabled in the present invention.
In figure: built-in fitting 1, the first embedded sleeve barrel 101, conical head 102, locating ring 103 indicate slot 104, parallel attachment plates 105, the second embedded sleeve barrel 106, angle connecting plate 107, longitudinal rib 2, stirrup 3 is fixedly welded screw rod 4, deformation monitoring safety device 5, monitor head 51, spring 52, battery 53, LED light 54, movable contact 55, fixed contact 56, monitoring screw 57, sliding slot 58, positioning Groove 581, connecting screw 6, base plate 7, backing plate 8, nut 9, dowel 10, beam column 11, concrete 12, connector 13, vertical bar 14, hinged seat 15, screw sleeve 16, double threaded screw 17, screw sleeve hinged seat 18, wirerope attachment base 19, wirerope 20, Tight screw rod 21, tensioning screw sleeve 22, template 23.
Specific embodiment
Embodiment 1:
In Fig. 1,2, a kind of Cantilever Beams, including built-in fitting 1, built-in fitting 1 include at least two embedded sleeve barrels, two embedded sleeve barrels Between be fixedly connected by connecting plate, so as to keep preset spacing and angle between embedded sleeve barrel;Thus structure, it is pre- convenient for making The hole buried on the base plate 7 of the spacing and Cantilever Beams between sleeve is consistent.It is difficult because of embedded sleeve barrel displacement to avoid the occurrence of The problem of to install.
One end of embedded sleeve barrel is used to be threadedly coupled with the screw rod 4 that is fixedly welded that embedded bar in concrete 12 welds, by This structure also avoids embedded sleeve barrel from shifting in casting process convenient for the positioning of embedded sleeve barrel, influences subsequent installation accuracy, And force structure, the other end of embedded sleeve barrel are threadedly coupled with connecting screw 6, connecting screw 6 passes through on the base plate 7 of Cantilever Beams Hole and backing plate 8 connect with nut, base plate 7 is fixedly connected with beam column 11.Thus scheme, connecting screw 6 is without pass through mould The difficulty of formwork erection is greatly reduced in plate.It is further preferred that embedded sleeve barrel can select corrosion-resistant material to make, such as it is not easy The material containing chromium or aluminising anti-corrosion treatment process of welding.Connecting plate steel wire and embedded bar binding and fixing are welded and fixed. Preferably, beam column 11 includes I-steel, channel steel, angle steel or steel pipe.
In preferred scheme such as Fig. 1 ~ 3, be arranged in parallel between the embedded sleeve barrel, for example, the first embedded sleeve barrel 101 with Axis between second embedded sleeve barrel 106 is parallel, is fixedly connected between embedded sleeve barrel by multiple parallel attachment plates 105.
In preferred scheme such as Fig. 4, overlapping and arranged crosswise up and down between the embedded sleeve barrel is led between embedded sleeve barrel It crosses multiple angle connecting plates 107 to be fixedly connected, the axis in the hole on base plate 7 overlaps up and down accordingly and arranged crosswise.Thus it ties Structure, it is ensured that the distance between embedded sleeve barrel and angle are consistent with the through-hole on base plate 7.Convenient for subsequent installation.The structure is used In the support of concrete angular position.
Preferred scheme such as Fig. 2, in 3, the embedded sleeve barrel is equipped with conical head close to the one end in 12 outside of concrete 102, embedded sleeve barrel is used to be adjacent to the medial surface of template 23 close to the one end in 12 outside of concrete.The knot of the conical head 102 of setting Tensile stress is converted to compression compared with stage structure using the concrete near inclined-plane extruding in stress by structure, and is mixed The compression for coagulating soil is substantially higher than tensile stress, and this arrangement enhances the stress intensities of built-in fitting 1.
In preferred scheme such as Fig. 1 ~ 3, it is equipped with locating ring 103 close to the one end in 12 outside of concrete in embedded sleeve barrel, it is fixed Threaded hole of the position circle for the temporary plugging embedded sleeve barrel in casting process;
Locating ring 103 is equipped with instruction slot 104 close to the end face of the one end in 12 outside of concrete, and instruction slot 104 is filled with for inhaling The water absorbent gel of water;Water absorbent gel is used for the adsorption moisture in casting process, and the position of concrete is tied up after expansion, convenient for demoulding The position of embedded sleeve barrel is searched afterwards.Also the intensity of concrete can be influenced after water absorbent gel water suction in a lesser range, Convenient for later period removing.Locating ring 103 preferably use plastic material, temporary plugging embedded sleeve barrel threaded hole one side be equipped with it is pre- The corresponding easy-torn line in bush whorl hole is buried, is broken when connecting screw 6 are installed in order to the later period.
Preferably, protrusion corresponding with instruction slot 104 is equipped with close to the one side of concrete 12 in base plate 7.It is installing In the process, it will first indicate the cleaning of the water absorbent gel in slot 104, then protrusion will be placed in instruction slot 104, then base plate 7 at this time On through-hole and the screw hole of embedded sleeve barrel it is accurately corresponding, be easily installed backing plate 8 and nut 9.
In preferred scheme, the end of the beam column 11 is equipped with hinged seat 15, on the concrete 12 below beam column 11 Be installed with screw sleeve hinged seat 18 by built-in fitting 1, hinged seat 15 and screw sleeve hinged seat 18 respectively with a screw rod set Cylinder 16 is hinged, and two screw sleeves 16 are threadedly coupled with double threaded screw 17, and 17 both ends thread rotary orientation of double threaded screw is opposite;Thus it ties Structure improves the bearing capacity of Cantilever Beams.
Alternatively, the end of the beam column 11 is equipped with attachment base, the attachment base in this example preferably uses otic placode, in beam column 11 Wirerope attachment base 19 is installed with by built-in fitting 1 on the concrete 12 of top, wirerope attachment base 19 and attachment base respectively with One end of steel cable 20 connects, and the other end of wirerope 20 is fixedly connected with tensioning screw 21, and two tensioning screws 21 divide It is not threadedly coupled with the both ends of tensioning screw sleeve 22,22 both ends thread rotary orientation of tensioning screw sleeve is opposite.Preferably, wirerope 20 positions being connect with attachment base and wirerope attachment base 19 to be arranged annulus protection, prevent the bending angle of wirerope excessive and Cause to damage.
In preferred scheme such as Fig. 8 ~ 11, it is additionally provided with deformation monitoring safety device 5, deformation monitoring safety device 5 and pedestal Plate 7 is threadedly coupled, and the monitor head 51 of deformation monitoring safety device 5 passes through base plate 7 and connect with concrete 12, to monitor base plate The variation of the distance between 7 and concrete 12.Deformation monitoring safety device 5 can use pressure sensor or displacement sensor, LED Lamp etc..
In preferred scheme such as Fig. 8 ~ 11, in the deformation monitoring safety device 5, monitoring screw 57 is equipped with external screw thread, It monitors and is equipped with through-hole among screw 57, monitor in screw 57 and be additionally provided with LED light 54, LED light 54 is electrically connected with battery 53;LED light The light of 54 hairs can be observed from the outer end of monitoring screw 57.
Monitoring screw 57 is slidably connected with monitor head 51, and spring 52 is equipped between monitor head 51 and battery 53, so that monitoring First 51 is protruding, and constitutes electrical connection;
It monitors and is equipped with fixed contact 56 in screw 57, fixed contact 56 is electrically connected with LED light 54, and monitor head 51 is equipped with band elasticity Movable contact 55;
Fixed contact 56 is equipped with groove, and movable contact 55 is equipped with protrusion, gap is equipped between protrusion and groove.Further preferably , it is equipped with sliding slot 58 in the through-hole side wall of monitoring screw 57, movable contact 55 is the cantilever design of elasticity, and sliding slot 58 is insulation, Positioning groove 581 is additionally provided in 58 side wall of sliding slot.Be not used before, monitor head 51 stretch out it is more, movable contact 55 be located at positioning It is at this time not used state in groove 581, is to avoid used 5 battery of deformation monitoring safety device electricity using the program Power is insufficient, causes security risk.In use, by monitoring screw 57 be screwed into the monitoring screw hole of base plate 7, make monitor head 51 with Concrete 12 contacts, and gradually retracts, until movable contact 55 is contacted with fixed contact 56, the conducting of LED light 54 at this time shines.After It is continuous to tighten monitoring screw 57, since there are gap, the gap and preset connection spiral shells between fixed contact 56 and movable contact 55 6 deflection of bar is corresponding, and when there are gaps between fixed contact 56 and movable contact 55,54 lamp of LED light extinguishes at this time.To operation It is exactly to tighten monitoring screw 57 to make 54 lamp of LED light is bright once to extinguish again for personnel, that is, is installed in place, when connecting screw 6 occurs After deformation, gap becomes larger between base plate 7 and concrete 12, and fixed contact 56 is contacted with movable contact 55 at this time, 54 lamp of LED light It is always on, reminds operator that Cantilever Beams deform more than preset value herein, handled.
Embodiment 2:
A kind of construction method using above-mentioned Cantilever Beams, comprising the following steps:
S1, built-in fitting 1 is threadedly coupled with screw rod 4 is fixedly welded, embedded sleeve barrel end face is adjacent to template 23 in built-in fitting 1, will It is fixedly welded screw rod 4 and embedded bar is welded to connect, built-in fitting 1 passes through steel wire lashing or be welded and fixed with embedded bar to be connect;
S2, casting concrete reach the position for finding embedded sleeve barrel end after solidifying phase demoulding, connecting screw 6 are screwed into pre-buried Predetermined depth in sleeve;
S3, by 7 sets of base plate on connecting screw 6, backing plate 8 and nut 9 are installed;
The construction of Cantilever Beams is realized by above step.
In preferred scheme, in step sl, it is additionally provided with the step of water absorbent gel is filled into positioning groove 581;
In step s3, the step of being additionally provided with using 581 positioning base plate 7 of positioning groove;
After step s3, it is additionally provided with the step of installing deformation monitoring safety device 5, monitoring screw 57 is screwed into base plate 7 In screw hole, until monitor head 51 resists the surface of concrete 12, and contactless between movable contact 55 and fixed contact 56.
Embodiment 3:
In use, built-in fitting 1 is placed in assembling reinforcement before reinforcing bar binding in concrete 12, predeterminated position is well placed, the One embedded sleeve barrel 101 and the second embedded sleeve barrel 106 are threadedly coupled with screw rod 4 is fixedly welded, will first be fixedly welded screw rod 4 with it is pre-buried It is tentatively bound between reinforcing bar, the first embedded sleeve barrel 101, the second embedded sleeve barrel 106, parallel attachment plates 105 or angle connecting plate 107 select Suitable position is selected to bind by transition reinforcing bar and embedded bar.Formwork erection after the completion of binding is finely tuned pre-buried again after the completion of formwork erection The position of part 1 makes the end of built-in fitting withstand 23 medial surface of template.Screw rod 4 will be fixedly welded and embedded bar is welded to connect.It is vertical After mould inspection is errorless, casting concrete pours the position for avoiding built-in fitting 1 in process of vibrating as far as possible, avoids result in the shifting of built-in fitting 1 Position, it should be noted that structure of the invention, migration-resistant ability with higher.Even if there is displacement, due to the first embedded sleeve barrel 101 and the second relative position between embedded sleeve barrel 106 fix, the connection with base plate 7 will not be influenced.Casting concrete is applied Work should pour completion in 2H as far as possible.After initial set, form removal continues watering or moisture-keeping maintaining to concrete, due to the present invention In be provided with instruction slot 104 structure, and instruction slot 104 in be filled with water absorbent gel, can make to mix because of the variation of water absorption rate Solidifying soil surface color is different from other positions, and since aquation is insufficient, 103 endface position of locating ring blocks concrete very It easily removes, therefore of less demanding to striking time, being more than presetting period demoulding can also.After final set, concrete strength reaches pre- If 80%, built-in fitting 1 can be searched according to concrete surface chromatic aberration and relative mounting location, clear up the concrete blocked, Connecting screw 6 is screwed into predetermined depth in embedded sleeve barrel, and examined by the end face for breaking locating ring 103.For subsequent mounting seat Plate 7 lays the foundation.Be fully welded between beam column 11 and base plate 7 along link position, detection without rosin joint, beam column 11 and base plate 7 it Between be welded to connect muscle 10, welding requirements to ensure the bonding strength between beam column 11 and base plate 7 be higher than beam column 11 itself it is strong Degree.When installation, the through-hole on base plate 7 is socketed on connecting screw 6, backing plate 8 is installed, tightens nut 9 with torque wrench, it is excellent Choosing installation spring washer and pairs of anti-loose nut.Preferred connecting screw 6 uses hot galvanizing double threaded screw or evanohm double threaded screw. It is equipped with monitoring screw hole near 7 through-hole of base plate, monitoring screw 57 is screwed into monitoring screw hole, until monitor head 51 pushes against coagulation Native surface.And keep LED light 54 bright once, it then proceedes to tighten monitoring 57 half-turn of screw or so, extinguishes LED light 54.Install Good deformation monitoring safety device 5.When connecting screw 6 get loose or base plate 7 deform, then LED light 54 lights, remind construction Personnel exclude security risk.
It is constructed according to " steel pipe scaffold specification ", scaffold maximum scaffolding height is that 18m adds 1.5m railing total 19.5m;Away from 15 wall face 0.3m of building structure, interior upright bar 17,16 transfer of outer vertical rod are 0.9m, advance 1.5m for interior upright bar 17, Step pitch is 1.8m.Lateral bar and the longitudinal bar of sweeping the floor of sweeping the floor of setting at overhanging top surface of the beam 200mm height.Laterally sweep the floor bar fastener It is fixed on bottom of upright rod, then on bar of laterally sweeping the floor, the bar fastener fixing that will longitudinally sweep the floor is in bottom of upright rod, to ensure fastener The overall stability of steel pipe scaffold.The outer side elevation of fastener-style steel pipe scaffolding is abound with 4 bridgings across 6m, and in per pass scissors Between the outer vertical rod and interior upright bar for supportting side, the support lateral out that one of spacing is 6m is set, is supportted lateral out in same internode the bottom of by Layer is to top layer in continuous arrangement in a zigzag.Built-in fitting 1 uses the built-in fitting of double embedded sleeve barrels as shown in Fig. 1 ~ 4, using 2 steps 3 across vertical spacing 3.6m, 3 ~ 4.5m of horizontal space.Wherein 3 meters of spacing are the Cantilever Beams using round tube, and spacing 4.5m is to use The Cantilever Beams of I-steel.The through-hole for reserving two 22mm on base plate 7 close to the position at top, between base plate 7 and built-in fitting 1 It is connected using the connecting screw 6 of two 20mm.The overall length of beam column 11 uses 1300mm, and 100 ~ 120mm of diameter × wall can be used Thick 4mm × long 1300mm seamless steel pipe can also use high 160mm × wide 90mm × long 1300mm I-steel.It is with I-steel Example, under the support and tension structure of Fig. 5 and Fig. 6, calculate the left section of I-steel supporting point position bears axial tension and is 5.34KN, it is 12.81N that shearing is born in I-steel section, and moment of flexure 2.56KNm shears as -6.40KN;Right section moment of flexure is 2.56KNm shears 12.81KN, by " steel pipe scaffold technical specification of security " formula 5.6.3 calculate I-steel tension is curved strong Degree are as follows:
21N/mm2 <f=205N/mm2, the anti-stretch bending strength of I-steel meets the requirements.By curved real abdomen component, it is anti-in principal plane It cuts intensity to calculate by " Code for design of steel structures " formula 4.1.2, show that shearing strength design value is 16N/mm2 <f=125N/mm2 , the curved intensity of the shearing resistance of I-steel meets the requirements.It is calculated by " steel pipe scaffold specification " formula 5.6.4, show that I-steel bending resistance is strong Degree design value is 19.98N/mm2 <f=215N/mm2, the overall stability of I-steel meets the requirements.Multiplied with the figure of structural mechanics Method calculates displacement, and the vertical displacement for obtaining steel I-beam outer end is 0.76mm < L/250=1300/250=5.2mm, meets the requirements. Under the premise of not having support construction, the endurance of I-steel is able to satisfy theoretically about 2.6 tons of applied force of demand.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this Shen Please in embodiment and embodiment in feature in the absence of conflict, can mutual any combination, such as by magnetorheological fluid Structure and multi-disc 1 structure of damping fin combination.The technical solution that protection scope of the present invention should be recorded with claim, packet The equivalents for including technical characteristic in the technical solution of claim record are protection scope.That is being equal within this range Replacement improves, also within protection scope of the present invention.

Claims (10)

1. a kind of Cantilever Beams, it is characterized in that: including built-in fitting (1), built-in fitting (1) includes at least two embedded sleeve barrels, and two pre- It buries and is fixedly connected between sleeve by connecting plate, so as to keep preset spacing and angle between embedded sleeve barrel;
One end of embedded sleeve barrel is used to be threadedly coupled with the screw rod (4) that is fixedly welded of the interior embedded bar welding of concrete (12), in advance The other end for burying sleeve is threadedly coupled with connecting screw (6), connecting screw (6) pass through Cantilever Beams base plate (7) on hole and Backing plate (8) is connect with nut, and base plate (7) is fixedly connected with beam column (11).
2. a kind of Cantilever Beams according to claim 1, it is characterized in that: be arranged in parallel between the embedded sleeve barrel, it is pre-buried It is fixedly connected between sleeve by multiple parallel attachment plates (105).
3. a kind of Cantilever Beams according to claim 1, it is characterized in that: overlapping up and down and intersection between the embedded sleeve barrel Arrangement is fixedly connected between embedded sleeve barrel by multiple angle connecting plates (107), on the axis in the hole on base plate (7) is corresponding Lower overlapping and arranged crosswise.
4. described in any item a kind of Cantilever Beams according to claim 1 ~ 3, it is characterized in that: the embedded sleeve barrel is close to concrete (12) one end on the outside of is equipped with conical head (102), and the one end of embedded sleeve barrel on the outside of concrete (12) is for being adjacent to template (23) medial surface.
5. a kind of Cantilever Beams according to claim 4, it is characterized in that: embedded sleeve barrel on the outside of concrete (12) one End is equipped with locating ring (103), and locating ring is used for the threaded hole of temporary plugging embedded sleeve barrel;
The end face of the one end of locating ring (103) on the outside of concrete (12) is equipped with instruction slot (104), instruction slot (104) filling There is the water absorbent gel for water suction;
In base plate (7), the one side close to concrete (12) is equipped with protrusion corresponding with instruction slot (104).
6. a kind of Cantilever Beams according to claim 1, it is characterized in that: the end of the beam column (11) is equipped with hinged seat (15), screw sleeve hinged seat (18), hinged seat are installed with by built-in fitting (1) on the concrete (12) below beam column (11) (15) and screw sleeve hinged seat (18) respectively with a screw sleeve (16) hingedly, two screw sleeves (16) and double threaded screw (17) it is threadedly coupled, double threaded screw (17) both ends thread rotary orientation is opposite;
Alternatively, the end of the beam column (11) is equipped with attachment base, pass through on the concrete (12) above beam column (11) pre-buried Part (1) is installed with wirerope attachment base (19), wirerope attachment base (19) and attachment base respectively with steel cable (20) one End connection, the other end of wirerope (20) is fixedly connected with tensioning screw (21), two tensioning screws (21) respectively be tensioned spiral shell The both ends of rod sleeve (22) are threadedly coupled, and tensioning screw sleeve (22) both ends thread rotary orientation is opposite.
7. according to claim 1 ~ 3 or 5 ~ 6 described in any item a kind of Cantilever Beams, it is characterized in that: being additionally provided with deformation monitoring safety Device (5), deformation monitoring safety device (5) are threadedly coupled with base plate (7), the monitor head of deformation monitoring safety device (5) (51) it passes through base plate (7) to connect with concrete (12), to monitor the distance between base plate (7) and concrete (12) variation.
8. a kind of Cantilever Beams according to claim 7, it is characterized in that: in the deformation monitoring safety device (5), monitoring Screw (57) is equipped with external screw thread, is additionally provided with LED light (54) in monitoring screw (57), LED light (54) is electrically connected with battery (53);
Monitoring screw (57) is slidably connected with monitor head (51), is equipped with spring (52) between monitor head (51) and battery (53), with Keep monitor head (51) protruding, and constitutes electrical connection;
It monitors in screw (57) and is equipped with fixed contact (56), fixed contact (56) is electrically connected with LED light (54), on monitor head (51) Equipped with the movable contact (55) with elasticity;
Fixed contact (56) is equipped with groove, and movable contact (55) is equipped with protrusion, gap is equipped between protrusion and groove.
9. a kind of construction method using the described in any item Cantilever Beams of claim 1 ~ 8, it is characterized in that the following steps are included:
S1, built-in fitting (1) is threadedly coupled with screw rod (4) is fixedly welded, embedded sleeve barrel end face and template (23) in built-in fitting (1) It is adjacent to, screw rod (4) will be fixedly welded and embedded bar is welded to connect, built-in fitting (1) is fixedly connected with embedded bar;
S2, casting concrete find the position of embedded sleeve barrel end after demoulding, connecting screw (6) is screwed into embedded sleeve barrel Predetermined depth;
S3, base plate (7) is covered on connecting screw (6), backing plate (8) and nut (9) is installed;
The construction of Cantilever Beams is realized by above step.
10. the construction method of a kind of Cantilever Beams according to claim 9, it is characterized in that: in step sl, being additionally provided with to fixed In position groove (581) the step of filling water absorbent gel;
In step s3, the step of being additionally provided with using positioning groove (581) positioning base plate (7);
After step s3, it is additionally provided with the step of installing deformation monitoring safety device (5), monitoring screw (57) is screwed into base plate (7) in screw hole, until monitor head (51) resist the surfaces of concrete (12), and movable contact (55) and fixed contact (56) it Between it is contactless.
CN201910498593.1A 2019-06-10 2019-06-10 Cantilever beam and construction method Active CN110259105B (en)

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CN113047595A (en) * 2021-03-25 2021-06-29 中国十七冶集团有限公司 External hanging basket installation structure of building wall and construction method thereof
CN113047422A (en) * 2021-03-30 2021-06-29 青岛腾远设计事务所有限公司 Building body structure convenient for intelligent sensor layout and construction method thereof

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CN113047422B (en) * 2021-03-30 2022-09-02 青岛腾远设计事务所有限公司 Building body structure convenient for intelligent sensor layout and construction method thereof

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