CN111535565A - Device for enhancing stress of advanced construction core tube structure - Google Patents

Abstract

The invention relates to the technical field of constructional engineering, and particularly discloses a device for enhancing stress of an advanced construction core tube structure, which comprises an upper platform, a lower platform and a first telescopic cylinder; the upper platform and the lower platform respectively comprise four fixing frames and a plurality of supporting frames, included angles of the four fixing frames and the inner wall of the core cylinder are 45 degrees, the supporting frames are connected with the fixing frames, two ends of each fixing frame are respectively provided with a fixing joint, and a telescopic clamping plate is arranged in each fixing joint; a hoisting mechanism is arranged on the support frame of the upper platform; the first telescopic cylinder is a double-acting telescopic cylinder, the upper end of the first telescopic cylinder is connected with the upper platform, and the lower end of the first telescopic cylinder is connected with the lower platform; the support frame of the lower platform is provided with an L-shaped lower hitching leg for people to climb; the core tube is characterized by further comprising a plurality of clamping grooves which are arranged on the inner wall of the core tube and matched with the clamping plates. The invention aims to solve the problem that the lateral force resistance of a core barrel body is poor when the core barrel is constructed in advance.

Description

Device for enhancing stress of advanced construction core tube structure

Technical Field

The invention relates to the field of building construction, and particularly discloses a device for enhancing stress of an advanced construction core tube structure.

Background

In the construction of the super high-rise building, in order to reduce the settlement difference between the core barrel and the outer frame and accelerate the construction progress, the core barrel structure is often constructed in advance by adopting a hydraulic creeping formwork or a steel platform formwork system, namely the core barrel is constructed in advance, then the construction of the steel framework structure surrounding the core barrel is carried out, and finally the construction of the outer frame column and the floor slab structure and the subsequent installation of the curtain wall are carried out. The core tube is constructed in advance, so that the shrinkage and creep of concrete can be fully developed, the deformation difference of a vertical component, the damage of a non-structural component and the additional internal force of a horizontal structural component are reduced, and the more advanced layers are, the more obvious the effect is; and from the aspect of engineering economic benefit, the more the advanced construction layer number is, the better.

For the core tube structure in the construction stage, as the structural geometry and boundary conditions are time-varying, the rigidity and stress mode of the structure are different from those in the normal use stage. When the core barrel is constructed in advance, before a floor slab is not poured, because the barrel and the outer frame do not form a complete lateral force resisting system, the number of layers of advanced construction is not suitable to be too large.

Disclosure of Invention

In view of the above, the present invention is directed to solve the problem of poor lateral force resistance of a core barrel during the advanced construction of the core barrel.

In order to achieve the purpose, the invention provides the following technical scheme:

a device for enhancing stress of a core tube structure for advanced construction comprises an upper platform, a lower platform and a first telescopic cylinder; the upper platform and the lower platform respectively comprise four fixing frames and a plurality of supporting frames, included angles of the four fixing frames and the inner wall of the core cylinder are 45 degrees, the supporting frames are connected with the fixing frames, two ends of each fixing frame are respectively provided with a fixing joint, and a telescopic clamping plate is arranged in each fixing joint; a hoisting mechanism is arranged on the support frame of the upper platform; the first telescopic cylinder is a double-acting telescopic cylinder, the upper end of the first telescopic cylinder is connected with the upper platform, and the lower end of the first telescopic cylinder is connected with the lower platform; the support frame of the lower platform is provided with an L-shaped lower hitching leg for people to climb; the core tube is characterized by further comprising a plurality of clamping grooves which are arranged on the inner wall of the core tube and matched with the clamping plates.

Optionally, a plurality of guide rods are vertically arranged on the core barrel, the guide rods are half embedded into the wall body of the core barrel, and the guide rods are located in the middle of the clamping grooves; and the fixed joint is provided with a guide groove matched with the guide rod.

Optionally, a mounting groove is formed in the fixed joint, an opening of the mounting groove faces the wall of the core barrel, a second telescopic cylinder is arranged in the mounting groove, the two clamping plates are arranged in the mounting groove in a sliding mode, connecting plates respectively connected with the two clamping plates are arranged in the mounting groove, and the connecting plates are connected with the second telescopic cylinder.

Optionally, a transverse groove is formed in the clamping plate, a supporting plate capable of moving horizontally is arranged in the transverse groove, a first wedge surface is arranged on one side, far away from the connecting plate, of the supporting plate, and first wedge blocks matched with the first wedge surface are arranged on two sides of the inner wall of the clamping groove.

Optionally, a clamping hole is formed in the inner side wall of the clamping groove, a first elastic piece is arranged in the clamping hole, a limiting column is arranged on the first elastic piece, and a second wedge surface is arranged at the outer side end of the limiting column; one side of the supporting plate close to the limiting column is provided with a rectangular limiting groove.

Optionally, one end of the support plate, which is close to the guide rod, is provided with a second wedge block, and the second wedge block can abut against the guide rod.

Optionally, a plurality of sliding blocks are fixedly arranged at the upper end and the lower end of the transverse groove, and sliding grooves for the sliding blocks to horizontally slide are formed in the supporting plate.

The working principle and the beneficial effects of the scheme are as follows:

1. the device in this scheme itself provides the interim reinforcing platform for a core section of thick bamboo, strengthens the bearing capacity and the stability of wall body temporarily, can satisfy the condition that a core section of thick bamboo continues construction and build, improves the number of piles that a core section of thick bamboo was under construction in advance. Meanwhile, construction workers can also carry out construction of cast-in-place floor slabs or laminated slabs on the device, permanent floor slabs can be formed after the construction of the cast-in-place floor slabs or the laminated slabs is completed, and the floor slabs can permanently improve the bearing capacity and stability of the core tube wall. The device in this scheme can conveniently be under construction permanent floor again when playing the effect of interim reinforcement, and this atress performance and the security that has improved a core section of thick bamboo greatly.

2. Dead lever in this scheme is 45 with a core section of thick bamboo inner wall contained angle, so can set up two fixed joint and be connected with a core section of thick bamboo on a dead lever, the total eight fixed joint of upper mounting plate and lower platform, fixed effect is better. Simultaneously, fixed joint on the dead lever offsets with a core section of thick bamboo, and whole upper mounting plate and lower platform can play the effect of interim floor, strengthen the anti lateral force performance of a core section of thick bamboo, improve the number of piles that a core section of thick bamboo can be under construction in advance.

3. Be equipped with hoisting machine in this scheme and construct, hoisting machine constructs can follow material components such as core bobbin base portion hoist and mount reinforcing bar or superimposed sheet, and the workman can carry out operations such as reinforcement under the platform to cast-in-place floor or superimposed sheet construction. When the core barrel is gradually constructed upwards, the cast-in-place floor or the laminated slab in the core barrel is also gradually constructed so as to improve the lateral force resistance of the core barrel, and the construction of the outer frame part is mutually independent from the construction of the cast-in-place floor and the laminated slab, so that the construction can be gradually carried out according to the construction period.

4. The guide bar cooperates with the guide way on the fixed joint, can play the effect of direction to the fixed joint, makes upper mounting plate and lower platform can vertical upwards or move down, avoids it to take place the skew.

5. The cardboard in this scheme can stretch into the draw-in groove of a core section of thick bamboo, makes upper mounting plate and lower platform can fix on a core section of thick bamboo, makes things convenient for the workman to carry out cast-in-place floor construction. Simultaneously, the cardboard is when getting into the draw-in groove, and the backup pad outwards removes under the effect of first voussoir, and the up end of backup pad can contact with the draw-in groove center, can disperse the strong point like this, improve the supporting effect. Simultaneously, be equipped with spacing post in the draw-in groove, spacing post can block into the spacing inslot of backup pad, and when the cardboard accident withdrawed from the draw-in groove, spacing post can prevent the backup pad to withdraw from, and then prevents the cardboard and withdraw from, guarantees the security of upper mounting plate and lower platform.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural view of an upper stage and a lower stage;

FIG. 3 is a schematic view of the upper platen, the lower platen and the interior of the core barrel;

FIG. 4 is a schematic structural view of a fixed joint and a clamping groove;

FIG. 5 is an enlarged view at L of FIG. 4;

FIG. 6 is an enlarged view taken at K in FIG. 4;

FIG. 7 is a schematic structural view of the inside of the fixed joint and the inside of the card slot;

FIG. 8 is a schematic view of the internal structure of the safety joint and the support frame;

FIG. 9 is an enlarged view at C of FIG. 8;

figure 10 is a schematic structural view of a hoisting mechanism.

The drawings are numbered as follows: the device comprises a core barrel 1, a fixed frame 2, a support frame 3, a first telescopic cylinder 4, a hoisting mechanism 5, a support net 6, a lower scaffold 7, a guide rod 8, a third wedge block 9, an extension part 10, a first wedge block 11, a limiting column 12, a clamping groove 13, a fixed joint 14, a third wedge surface 15, a clamping plate 16, a support plate 17, a first wedge surface 18, a guide groove 19, a fixed groove 20, a second spring 21, a mounting groove 22, a second telescopic cylinder 23, a connecting plate 24, a second wedge block 25, a transverse groove 26, a sliding block 27, a sliding groove 28, a safety joint 29, a safety groove 30, a rotating shaft 31, a clamping tooth 32, a material storage pipe 33, a one-way valve 34, an air bag body 35, a heat conduction block 36, a clamping strip 37, a motor 38 and a hook 39.

Detailed Description

The following is further detailed by way of specific embodiments:

as shown in fig. 1 and 2:

a device for enhancing stress of a core tube structure for advanced construction comprises an upper platform, a lower platform and a plurality of first telescopic cylinders 4.

With reference to fig. 3 to 5, a plurality of slots 13 are vertically formed in the four inner walls of the core barrel 1, a plurality of guide rods 8 are further embedded, and the guide rods 8 are vertically arranged and located in the middle of the slots 13. The wall body of the core barrel 1 is also provided with a plurality of third wedge blocks 9, the third wedge blocks 9 are positioned at two sides of the clamping groove 13, wedge surfaces are arranged at the upper end and the lower end of each third wedge block 9, and the thickness of each third wedge block 9 is 3-4 cm. Fixed first voussoir 11 that is equipped with in the inner wall both sides of draw-in groove 13, the inner wall both sides of draw-in groove 13 still are equipped with the card hole, and the card hole runs through first voussoir 11, fixes being equipped with first spring in the card hole, and fixed spacing post 12 that is equipped with on the first spring, spacing post 12 is equipped with the second scarf towards one side of guide bar 8. The guide rod 8 is also provided with a plurality of extension parts 10, and the upper end and the lower end of each extension part 10 are flush with the clamping grooves 13.

With reference to fig. 6-7, the upper platform includes four fixing frames 2 and six supporting frames 3, and the lower platform includes four fixing frames 2 and four supporting frames 3. The fixing frame 2 and the wall body of the core tube 1 form an included angle of 45 degrees, wherein the four supporting frames 3 are parallel to the wall body of the core tube 1, two ends of the four supporting frames are respectively welded with the two fixing frames 2, and the two supporting frames 3 are crossed and are perpendicularly welded with the fixing frame 2. A supporting net 6 is also fixedly arranged on the supporting frame 3 of the lower platform. Both ends of mount 2 all are equipped with fixed recess 20, and fixed recess 20 internal fixation is equipped with second spring 21, and the fixed joint 14 that is equipped with on the second spring 21, fixed joint 14 can slide in fixed recess 20, and the compressible volume of second spring 21 is less than 5cm, and the slidable distance of fixed joint 14 is also less than 5 cm. The outside end of the fixed joint 14 can be tightly propped against the wall of the core barrel 1, the upper end and the lower end of the fixed joint 14 are respectively provided with a third wedge surface 15, and the third wedge surfaces 15 can be matched with the third wedge blocks 9. The fixed joint 14 is provided with a guide groove 19 which is matched with the guide rod 8. The fixed joint 14 is provided with a mounting groove 22, an opening of the mounting groove 22 faces the wall of the core barrel 1, a second telescopic cylinder 23 is fixedly arranged in the mounting groove 22, and a connecting plate 24 is fixedly arranged at the output end of the second telescopic cylinder 23. The clamping plate 16 is arranged in the mounting groove 22 in a sliding mode, and two ends of the connecting plate 24 are fixedly connected with the clamping plate 16 respectively. The clamping plate 16 is provided with a transverse groove 26, and a supporting plate 17 is arranged in the transverse groove 26. The upper and lower ends of the transverse groove 26 are both fixedly provided with a plurality of sliding blocks 27, and the supporting plate 17 is provided with a sliding groove 28 for the sliding blocks 27 to horizontally slide left and right. The side of the support plate 17 remote from the connection plate 24 is provided with a first wedge surface 18, and the first wedge surface 18 is matched with the first wedge 11. And a second wedge 25 is fixedly arranged on one side, close to the connecting plate 24, of the supporting plate 17, and the second wedge 25 can abut against the guide rod 8.

With reference to fig. 10, a hoisting mechanism 5 is arranged on the support frame 3 of the upper platform, the hoisting mechanism 5 includes a motor 38, a steel rope and a hook 39, the motor 38 is fixedly arranged on the support frame 3, a winding roller is coaxially and fixedly arranged at the output end of the motor 38, the steel rope is wound on the winding roller, and the hook 39 is fixedly arranged at the lower end of the steel rope. The first telescopic cylinder 4 is a double-acting telescopic cylinder, the upper end of the first telescopic cylinder 4 is fixedly connected with the upper platform, and the lower end of the first telescopic cylinder 4 is fixedly connected with the lower platform. The support frame 3 of the lower platform is fixedly provided with an L-shaped lower hitching leg 7 for climbing by people.

Referring to fig. 8 to 9, a safety joint 29 is fixedly disposed on the supporting frame 3, the safety joint 29 contacts with the wall of the core barrel 1, a safety groove 30 is disposed on the safety joint 29, and a rear end of the safety groove 30 extends onto the supporting frame 3 and penetrates through an inner side end of the supporting frame 3. A rotating shaft 31 is rotatably arranged in the safety groove 30, a plurality of clamping teeth 32 are concentrically arranged on the rotating shaft 31, the clamping teeth 32 are abutted against the wall body of the core barrel 1, a clamping strip 37 meshed with the clamping teeth 32 is slidably arranged at the lower end of the inner wall of the safety groove 30, a plurality of one-way pawls are arranged on the clamping strip 37, and the one-way pawls are meshed with the clamping teeth 32. The outer end of the clip strip 37 is formed in a sharp taper. Still be equipped with gasbag mechanism in the safety trough 30, gasbag mechanism includes gas generation unit and gasbag body 35, and gas generation unit includes storage tube 33, is equipped with the heat conduction piece 36 that is formed with partial cylinder groove on the storage tube 33, and heat conduction piece 36 contacts with latch 32. The storage tube 33 is filled with gas generating agent, which can be the generating agent used in the prior safety air bag, and the specific components thereof are already available, so the detailed description is omitted. The storage tube 33 is provided with a check valve 34, and the check valve 34 is communicated with the airbag body 35. The rear end of the safety groove 30 is connected with a safety plate in a clamping mode, and the safety plate can be broken when the air bag body 35 expands.

The operation method of the device for enhancing the stress of the advanced construction core tube structure comprises the following steps:

s1, hoisting the device into the core tube 1, starting the second telescopic cylinder 23, and enabling the clamping plates 16 of the upper platform and the lower platform to extend into the clamping grooves 13 of the core tube 1 so as to fix the upper platform and the lower platform;

s2, climbing the lower platform from the lower hitching leg 7, then binding the steel bars and pouring concrete to construct the cast-in-place floor slab, and stacking the building material needed to be used on the previous layer on the layer to be hoisted after constructing the cast-in-place floor slab;

s3, when climbing, a worker needs to climb, the worker firstly controls the second telescopic cylinder 23 of the upper platform to extend outwards, at the moment, the clamping plate 16 continues to move towards the clamping groove 13, the supporting plate 17 moves towards the direction of the guide rod 8 under the cooperation of the first wedge block 11, at the moment, the limiting column 12 in the clamping groove 13 gradually retreats from the limiting groove on the supporting plate 17, and then the worker controls the second telescopic cylinder 23 to retract; when the second wedge 25 abuts against the guide rod 8, the support plate 17 moves away from the guide rod 8 again and resets; then starting the first telescopic cylinder 4, driving the upper platform to move upwards by the first telescopic cylinder 4, starting the second telescopic cylinder 23 to insert the clamping plate 16 into the clamping groove 13 so as to fix the upper platform, and then moving and fixing the lower platform upwards in the same way to finish climbing once;

and S4, after finishing the construction of a layer of cast-in-place floor slab, sequentially repeating the steps S3 and S2.

When the upper platform or the lower platform accidentally falls downwards, the latch 32 rotates due to the fact that the latch 32 abuts against the wall body of the core tube 1, the latch 32 drives the clamping strip 37 to move outwards, and the clamping strip 37 is inserted into the wall body of the core tube 1 again to prevent the upper platform or the lower platform from continuing to fall. Meanwhile, the latch 32 rubs with the heat conduction block 36 at a high speed when rotating, the heat conduction block 36 is a metal product, so that the temperature is rapidly raised, the gas generating agent is heated, the gas generating agent reacts to produce a large amount of gas, and the airbag rapidly expands to form protection, so that a worker is prevented from falling, and the falling speed is reduced for the buffer upper platform and the buffer lower platform.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims (7)

1. The utility model provides a device that reinforcing is construction core section of thick bamboo structure atress in advance which characterized in that: comprises an upper platform, a lower platform and a first telescopic cylinder; the upper platform and the lower platform respectively comprise four fixing frames and a plurality of supporting frames, included angles of the four fixing frames and the inner wall of the core cylinder are 45 degrees, the supporting frames are connected with the fixing frames, two ends of each fixing frame are respectively provided with a fixing joint, and a telescopic clamping plate is arranged in each fixing joint; a hoisting mechanism is arranged on the support frame of the upper platform; the first telescopic cylinder is a double-acting telescopic cylinder, the upper end of the first telescopic cylinder is connected with the upper platform, and the lower end of the first telescopic cylinder is connected with the lower platform; the support frame of the lower platform is provided with an L-shaped lower hitching leg for people to climb; the core tube is characterized by further comprising a plurality of clamping grooves which are arranged on the inner wall of the core tube and matched with the clamping plates.

2. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 1, wherein: a plurality of guide rods are vertically arranged on the core barrel, the guide rods are half embedded into the wall body of the core barrel, and the guide rods are positioned in the middle of the clamping grooves; and the fixed joint is provided with a guide groove matched with the guide rod.

3. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 2, wherein: the fixed joint is provided with a mounting groove, the opening of the mounting groove faces the wall of the core barrel, a second telescopic cylinder is arranged in the mounting groove, the two clamping plates are arranged in the mounting groove in a sliding mode, connecting plates which are respectively connected with the two clamping plates are arranged in the mounting groove, and the connecting plates are connected with the second telescopic cylinder.

4. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 3, wherein: the clamping plate is provided with a transverse groove, a supporting plate capable of moving horizontally is arranged in the transverse groove, a first wedge surface is arranged on one side, far away from the connecting plate, of the supporting plate, and first wedge blocks matched with the first wedge surface are arranged on two sides of the inner wall of the clamping groove.

5. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 4, wherein: a clamping hole is formed in the inner side wall of the clamping groove, a first elastic piece is arranged in the clamping hole, a limiting column is arranged on the first elastic piece, and a second wedge surface is arranged at the outer side end of the limiting column; one side of the supporting plate close to the limiting column is provided with a rectangular limiting groove.

6. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 5, wherein: and a second wedge block is arranged at one end, close to the guide rod, of the supporting plate and can be abutted against the guide rod.

7. The device for enhancing the stress of the advanced construction core tube structure as claimed in claim 6, wherein: the upper end and the lower end of the transverse groove are both fixedly provided with a plurality of sliding blocks, and the supporting plate is provided with a sliding groove for the sliding blocks to horizontally slide.

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