CN106320679A - Multi-functional isolation construction platform and construction method for ultra-large cluster polygonal coal bunker group - Google Patents

Abstract

The invention discloses a multifunctional isolation construction platform for an ultra-large cluster polygonal coal bunker group. The multifunctional isolation construction platform for the ultra-large cluster polygonal coal bunker group comprises a plurality of I-shaped steels which are uniformly arranged along a frame beam of the polygonal coal bunker at intervals, wherein the I-shaped steels penetrate through the frame beam, one end of the I-steel is positioned at the inner side of the frame beam, the other end of the I-steel is positioned at the outer side of the frame beam, the I-steel is fixedly embedded in the frame beam, the upper surfaces of the I-shaped steels are welded into a whole by adopting steel bars, the end of each I-shaped steel positioned at the inner side of the frame beam is provided with at least two round holes, the I-shaped steel on the inner side of the frame beam is oppositely pulled through the oppositely-pulled steel bars and the inverted wires, a steel bar mesh is formed in the middle area of the frame beam, two ends of each oppositely-pulled steel bar are respectively connected with one end of one inverted wire, the other end of the inverted wire is connected with the round hole of the corresponding I-shaped steel end, and the upper part of the reinforcing mesh is fully paved with steel plates and fixed.

Description

Multi-functional isolation construction platform and construction method for ultra-large cluster polygonal coal bunker group

technical field

The invention relates to an isolation construction platform, in particular to an isolation construction platform for isolation construction of an upper structure and a lower structure. The present invention also relates to the construction method of the above isolation construction platform.

Background technique

The square coal bunker project is the first honeycomb coal bunker in China. It adopts a reinforced concrete structure with a length of 210.35m, a width of 60.45m and a height of 45m. Each group consists of 16 honeycomb bins), each honeycomb bin has a straight wall structure above 20.6m, and a steel coal hopper structure below 20.6m. After the hoisting of the first steel coal hopper is completed, in order to synchronize the construction of the straight wall section and the assembly of the steel coal hopper under the warehouse, it is necessary to set up an isolated construction platform at 20.6m.

At present, for tall and large silo structures, full hall supports or large steel structures are generally used to set up isolation platforms for construction. There are many problems in the construction process of erecting the full hall support: first, the number of supports is large, the erection is inconvenient, the stability is poor, and the investment of manpower, material resources and financial resources is increased at the same time; the second is the high erection height, the safety factor is reduced, and the erection speed is slow , The construction period is long; the third is that the substructure cannot be constructed at the same time, which affects the overall construction progress and cannot meet the construction period requirements. However, the use of large steel structures to set up isolation platforms also has some disadvantages: first, it increases the input of materials, and the isolation and disassembly of large steel structures requires the cooperation of high-tonnage cranes, which increases the input of manpower, material resources, and financial resources; The safety pressure is high and the construction period is long.

Contents of the invention

Aiming at the above-mentioned defects existing in the prior art, the present invention provides a new isolated construction platform, which can effectively solve the problems of low safety factor, large investment in personnel and materials, and problems of superstructure and substructure in the isolation construction of full hall supports and large-scale steel structures. Unable to construct at the same time, the progress cannot be guaranteed, and the cost is high.

The present invention is realized through the following technical scheme: a multi-functional isolation construction platform for super-large clustered polygonal coal bunkers, which is characterized in that it includes several I-beams arranged evenly at intervals along the frame beams of the polygonal coal bunkers. The I-beam passes through the frame beam, one end of which is located inside the frame beam, and the other end is located outside the frame beam, and the I-beam is fixedly embedded in the frame beam, and the I-beam The upper surface of the frame beam is welded as a whole with steel bars, and the end of each I-beam located inside the frame beam is provided with at least two round holes, and the I-beam inside the frame beam passes through The tensioned steel bars and inverted normal wires are pulled in opposite directions to form a reinforcement mesh in the middle area of the frame beam, and the two ends of each double tensioned steel bar are respectively connected to one end of the inverted normal wire, and the other end of the inverted normal wire is connected to the corresponding The round holes at the ends of the I-beams are connected, and the upper part of the steel mesh is covered with steel plates and fixed.

In the present invention, in the area inside the frame beam, the inverted wires are arranged between the I-beams and the opposite tension steel bars are laid in a mesh shape to form a steel mesh, and the steel plates are laid on top to form isolation. The I-beam can also be used as a scaffolding support for the upper structure. The upper part of the I-beam can be constructed by erecting a bracket on the upper part of the I-beam, and the lower part of the I-beam can be used for the construction of the lower structure at the same time.

In order to ensure the structural strength, a further proposal is that three round holes are provided at the end of each I-beam located inside the frame beam, and three opposite tension bars are connected to each end of the I-beam.

In order to ensure that the platform has a good buffering and sound insulation effect, further, square logs are arranged at intervals on the upper part of the steel plate on the upper part of the steel mesh, and bamboo plywood is fully paved and fixed on the upper part of the square logs.

In order to limit the position of the upper structure support, the upper surface of the I-beam is fixed with a vertically arranged limit steel bar. The limit reinforcement can be used as a limit device for the superstructure support.

For the convenience of construction, the two ends of the anti-tension steel bars are ring-shaped, and the anti-tension steel bars are hooked and connected with the inverted positive wires.

The construction method of the multi-functional isolation construction platform of the ultra-large clustered polygonal coal bunker group adopts the following steps for construction:

(1) Process the I-beam according to the design size, and drill a round hole at one end with a magnetic drill;

(2) Processing and forming the opposite tension steel bar according to the design size;

(3) When the frame beam is bound with bars, measure and set out the specific position of the I-beam on the beam, pre-embed the bars at the position of the I-beam, and prevent the conflict between the bars and the position of the I-beam;

(4) After the pouring of the frame beam is completed, the I-beam is laid according to the lofting position, and the I-beam and the pre-embedded rib are welded firmly;

(5) adopt reinforcing bar on its upper surface between described I-beams to be welded as a whole;

(6) Utilize opposite-drawn reinforcing bars and inverted normal wires between the I-beams on the inside of the frame beams to form a reinforcement mesh in the middle area of the frame beams, and make the evenly stressed opposite-drawn reinforcing bars by tightening the inverted normal wires;

(7) Lay steel plates on the reinforcement net, and fix the steel plates to form an isolated construction platform.

Further, the pair of tension bars are φ14 bars.

In order to ensure that the platform has a good buffering and sound insulation effect, further, square wood is arranged at intervals on the upper part of the steel plate above the steel mesh, and the upper part of the square wood is covered with bamboo plywood, and the bamboo plywood and square wood are nailed together .

The beneficial effects of the present invention are: the present invention utilizes I-beams, inverted normal wires, steel bars, and steel plates to form an isolated construction platform, which has high strength, good stability, simple structure, and convenient construction. It can not only meet the construction needs of tall and large silos, but also It can save a lot of manpower, material resources and other costs, and the formed isolation platform can enable the superstructure and the substructure to be constructed at the same time, which can shorten the construction period, ensure the construction progress, and have a high construction safety factor. The erection of steel structure isolation improves the construction progress and construction safety factor. The invention has simple structure, easy-to-understand principle, convenient material acquisition, low cost and high practicability.

Description of drawings

Fig. 1 is the top view of the isolated construction platform in the specific embodiment of the present invention;

Fig. 2 is the front view of the isolated construction platform in the specific embodiment of the present invention;

Figure 3 is a partially enlarged schematic diagram of the right half of Figure 2

Fig. 4 is the structural representation of the I-beam in Fig. 2;

Fig. 5 is the structural representation of the tension reinforcement in Fig. 2;

Fig. 6 is a schematic diagram of reinforcement between the I-beam and the frame beam in a specific embodiment of the present invention;

Fig. 7 is a schematic diagram of the connection between the I-beam and the I-beam in the specific embodiment of the present invention;

In the figure, 1. steel bar, 2. I-beam, 3. frame beam, 4. tensioned steel bar, 5. straight wall, 6. steel plate, 7. bamboo plywood, 8. square wood, 9. inverted wire, 10. Limiting steel bars, 11. Round holes, 12. Pre-embedded insert bars, 13. Main bars of straight walls.

detailed description

The present invention will be further described below in conjunction with accompanying drawing by non-limiting embodiment:

The square coal bunker project in this embodiment is a honeycomb coal bunker, reinforced concrete structure, 210.35m long, 60.45m wide, and 45m high. The bin body is composed of 48 hexagonal coal bins, and the 48 honeycomb bins are composed of three groups (16 honeycomb bins in each group), each side is 9.3 meters long. Each honeycomb warehouse has a straight wall structure above 20.6m, and a steel coal hopper structure below 20.6m. After the hoisting of the first steel coal hopper is completed, in order to synchronize the construction of the straight wall section and the assembly of the steel coal hopper under the warehouse, an isolation construction platform needs to be set at 20.6m.

As shown in the accompanying drawings, a multi-functional isolation construction platform for super-large clustered polygonal coal bunkers includes several I-beams 2 evenly spaced along the frame beam 3 of the polygonal coal bunker, and the I-beams 2 pass through One end of the frame beam 3 is located inside the frame beam 3, and the other end is located outside the frame beam 3. The I-beam 2 is fixedly buried in the frame beam 3. The I-beam 2 are welded as a whole with steel bars 1 on the upper surface thereof, and the end of each I-beam 2 located inside the frame beam 3 is provided with at least two round holes 11, and the inside of the frame beam 3 The I-beams 2 are pulled in pairs by the tensioned steel bars 4 and the inverted normal wires 9 to form a reinforcement mesh in the middle area of the frame beam 3, and the two ends of each double-tensioned steel bar 4 are respectively connected to one end of an inverted normal wire 9 , the other end of the inverted normal wire 9 is connected with the circular hole 11 of the corresponding I-beam 2 ends, and the top of the steel mesh is covered with steel plates 6, and all welding is firm between the steel plates and the steel plates and between the steel plates and the I-beams.

In this embodiment, the end of each I-beam 2 located inside the frame beam 3 is provided with three round holes 11, and the end of each I-beam 2 is connected with three opposite tension bars 4, thereby forming a force-bearing Uniform and stable reinforcement mesh. In order to ensure that the platform has a good buffering and sound insulation effect, square timbers 8 are also arranged at intervals on the upper part of the steel plate 6 on the top of the steel mesh, and the upper part of the square timbers 8 is covered with bamboo plywood 7, and the bamboo plywood 7 and the square timber 8 fixed together. For the convenience of construction, the two ends of the anti-tension steel bar 4 are designed to be ring-shaped, and the anti-tension steel bar 4 is hooked and connected with the inverted positive wire 9. In order to limit the position of the upper structure support, the upper surface of the I-beam 2 is also fixed with a plurality of vertically arranged limit steel bars 10 .

In the present invention, the inverted positive wire 9 is the prior art, one end of which is a positive wire, and the other end is a reversed wire, which is used for fixing and adjusting the position.

In this embodiment, the type of the I-beam 2 is 25a, and the distance between the I-beams is 150 cm;

The above-mentioned ultra-large clustered polygonal coal bunker group multifunctional isolation construction platform adopts the following steps for construction:

(1) The I-beam 2 is processed and formed according to the design size. The I-beam has a processing length of 6m. The upper surface is welded with 4 limit steel bars 10 with a length of 100mm and a diameter of 32mm according to the design size, and one end of the I-beam 2 Use a magnetic drill to drill three round holes 11 with a diameter of 30 mm, and the distance between the edge of the hole and the end of the I-beam is required to be greater than 30 mm;

(2) Process and shape the opposite tension bars 4 according to the actual I-beam spacing, and weld the two ends of the opposite tension bars 4 into a ring shape, and the welding length shall not be less than 5d (double-sided welding) or 10d (single-sided welding);

(3) When the frame beam 3 is bound with ribs, measure and set out the specific position of the I-beam 2 on the beam, pre-embed the ribs 12 at the position of the I-beam, and prevent the conflict between the ribs and the position of the I-beam;

(4) After the pouring of the frame beam 3 is completed, the I-beam 2 is laid according to the lofted position, and the I-beam 2 and the pre-embedded inserting reinforcement 12 (main reinforcement of the non-straight wall) are welded firmly;

(5) The upper surface of the I-beam 2 is welded as a whole with a steel bar 1 with a diameter of 14 mm, and the steel bar spacing is 30 cm;

(6) Utilize the double-tensioned steel bars 4 and the inverted normal wires 9 to pull between the I-beams 2 on the inside of the frame beam 3 and form a reinforcement mesh in the middle area of the frame beam 3, and tighten the inverted normal wires 9 to make the opposite tension Steel bar 4 is evenly stressed;

(7) Lay 2mm thick steel plate 6 on described reinforcing net, lay from all around to the middle, weld between steel plate and steel plate, steel plate and I-beam, the whole isolated platform steel plate is covered, closely sticks, does not stay dead angle;

In order to ensure that the platform has a good cushioning and sound insulation effect, 5cm*10cm square wood 8 can be further placed on the upper part of the steel plate 6 with a distance of 1m. Cushioning and sound insulation.

Other parts in this embodiment adopt known technologies, which will not be repeated here.

Claims (8)

1. ultra-large type boundling polygon coal bunker group's Multifunctional partition is from an operation platform, it is characterized in that: include along polygon coal bunker Vierendeel girder (3) be spaced some I-steel (2) being evenly arranged, described I-steel (2) passes described Vierendeel girder (3), one End is positioned at the inner side of described Vierendeel girder (3), and its other end is positioned at the outside of described Vierendeel girder (3), and described I-steel (2) is fixing to be buried Being located in described Vierendeel girder (3), between described I-steel (2), surface uses reinforcing bar to be welded as a whole thereon, position It is equipped with at least two circular hole (11), described Vierendeel girder (3) in the termination of the every I-steel (2) of described Vierendeel girder (3) inner side Between the I-steel (2) of inner side by draw reinforcing bar (4) and positive silk (9) to drawing and being formed at the zone line of Vierendeel girder (3) Bar-mat reinforcement, every two ends to drawing reinforcing bar (4) connect one end of positive silk (9) described in respectively, described positive silk (9) another One end connects with the circular hole (11) of corresponding I-steel (2) termination, and described bar-mat reinforcement top completely spreads steel plate and fixes.

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 1, from operation platform, is characterized in that: position It is provided with three circular holes (11) in the termination of the every I-steel (2) of described Vierendeel girder (3) inner side, every described I-steel (2) Termination have three connected to drawing reinforcing bar (4).

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 1 and 2 from operation platform, its feature It is: be also arranged at intervals with the lumps of wood on the steel plate top on described bar-mat reinforcement top, completely spreads on described lumps of wood top and be fixed with bamboo glue Plate.

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 1 and 2 from operation platform, its feature It is: the upper surface of described I-steel (2) is fixed with vertically arranged limit steel bar (10).

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 1 and 2 from operation platform, its feature It is: be ring-type to the two ends drawing reinforcing bar (4) to be connected with described positive silk (9) hook drawing reinforcing bar (4).

6. ultra-large type boundling polygon coal bunker group's Multifunctional partition as claimed in claim 1 is from the construction party of operation platform Method, is characterized in that: use following steps to construct:

(1) by I-steel (2) by design size machine-shaping, and magnetic drill is at one end used to get out circular hole (11)；

(2) will be to drawing reinforcing bar (4) by design size machine-shaping；

(3), during Vierendeel girder (3) joint bar colligation, on beam, surveying and locating goes out I-steel (2) particular location, pre-buried in I-steel position Joint bar, and prevent joint bar from conflicting with I-steel position；

(4), after Vierendeel girder (3) pours, lay I-steel (2) by setting-out position, I-steel (2) is welded with pre-doweling Firmly；

(5) between described I-steel (2), surface uses reinforcing bar to be welded as a whole thereon；

(6) utilize to draw reinforcing bar (4) and positive silk (9) between the I-steel (2) of described Vierendeel girder (3) inner side to drawing and at frame The zone line of (3) of setting a roof beam in place forms bar-mat reinforcement, and makes drawing reinforcing bar (4) uniform stressed by screwing down positive silk (9)；

(7) on described bar-mat reinforcement, completely spread steel plate, and by Interal fixation, form isolation operation platform.

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 6 from the construction method of operation platform, It is characterized in that: described is φ 14 reinforcing bar to drawing reinforcing bar (4).

Ultra-large type boundling polygon coal bunker group's Multifunctional partition the most according to claim 6 from the construction method of operation platform, It is characterized in that: be spaced on the steel plate top on described bar-mat reinforcement top and the lumps of wood is set, completely spread bamboo slab rubber on described lumps of wood top, and will Bamboo slab rubber is nailed together with the lumps of wood.