CN112160576A - High-altitude operation platform arranged on lower chord of truss and construction method thereof - Google Patents
High-altitude operation platform arranged on lower chord of truss and construction method thereof Download PDFInfo
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- CN112160576A CN112160576A CN202011033453.6A CN202011033453A CN112160576A CN 112160576 A CN112160576 A CN 112160576A CN 202011033453 A CN202011033453 A CN 202011033453A CN 112160576 A CN112160576 A CN 112160576A
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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- Steps, Ramps, And Handrails (AREA)
Abstract
The invention relates to a scaffold for a special part of a building, and discloses an aerial operation platform arranged on a lower chord of a truss and a construction method thereof. The invention changes the high-altitude operation into a construction process similar to indoor operation, greatly improves the safety of truss construction, solves the psychological burden of constructors on the high-altitude operation, obviously improves the construction efficiency and also allows night construction; the high-altitude operation platform completely separates the truss from the ground, so that the problem of falling objects in high-altitude operation is solved, and the truss operation and the ground operation can be carried out simultaneously; the high-altitude operation platform can be further provided with a sliding rope, so that constructors can conveniently transfer the components to be installed to required positions from the edge of the platform.
Description
Technical Field
The invention relates to a scaffold for a special part of a building, in particular to an aerial operation platform arranged on a lower chord of a truss and a construction method thereof.
Background
The high-altitude operation is a construction process which is difficult to avoid in the construction process of the building. Since the personal safety of the constructors is greatly threatened in the high-altitude operation, the high-altitude operation is limited in various ways, such as the constructors can not operate at night and can not operate continuously for a long time, and the constructors need to hang various safety equipment, such as safety ropes, which influence the activities. In addition, high-altitude construction and ground construction cannot be carried out simultaneously, so that ground personnel are prevented from being injured by falling objects in the high-altitude construction. This series of limitations leads to the efficiency of the aerial work being severely affected.
Large span single building is almost only an option of truss construction, limited by the strength of the building material. In general, for effective space utilization, a large number of electromechanical devices and pipelines are often required to be arranged in the truss, and the lower chord of the truss is connected together through a berm, so that equipment maintenance is facilitated. The packway is similar to a catwalk for bridge construction and is a narrow bridge.
In the construction process of the truss structure, as no floor slab like a common building exists, after the truss structure is lifted to an installation position, all the construction processes are all aerial work. The construction process is that after the construction of the truss main body structure is finished, an operation platform is provided for the high-altitude electromechanical construction in a full-hall floor scaffold mode. The scaffold is long in erection time and large in occupied space, construction cannot be simultaneously conducted on the upper portion and the lower portion of the truss, and the construction period is greatly influenced. And scaffold gap is more, leads to the article eminence to fall easily when constructor walks on it, can cause the potential safety hazard. Furthermore, the truss structure itself also hinders the hoisting process.
Disclosure of Invention
The invention provides a high-altitude operation platform arranged on a lower chord of a truss and a construction method thereof.
The technical problem to be solved is that: the whole construction process on the truss belongs to high-altitude operation, construction is carried out by depending on a full-hall landing scaffold, the construction efficiency is low, and the construction on the ground is influenced.
In order to solve the technical problems, the invention adopts the following technical scheme: a high-altitude operation platform arranged on a lower chord of a truss comprises a high-altitude berm arranged on a lower chord of the truss, wherein berm beams are arranged at the edge of the high-altitude berm;
the existing beam of the high-altitude operation platform comprises a pavement beam and a truss lower chord member, the newly-added platform beam and the existing beam form a criss-cross grid structure, and a base plate is laid on the grid structure;
the end part of the newly-added platform beam is erected on the existing beam and is fixedly connected with the existing beam.
Furthermore, one end of the newly-added platform beam is provided with a connecting buckle for preventing the platform beam from sliding down when being built.
Furthermore, the newly-added platform beam is a steel beam, the connecting buckle is a section of channel steel with a downward opening, and one side of the channel steel is welded and connected with the end face of the newly-added platform beam; newly-increased platform roof beam has the one end of connector link to pass through the connector link knot to be established on current roof beam, and connector link and rather than the current roof beam welded connection of contact, the other end directly is taken up and is established on current roof beam and with current roof beam welded connection.
Further, the backing plate is a steel springboard, the backing plate is matched with grids in the grid-shaped structure and corresponds to the grids one by one, a backing plate is arranged in each grid, and the edge of the backing plate is fixedly connected with the grids.
Furthermore, a zigzag construction stair is arranged below the high-altitude operation platform; a guardrail is arranged at the edge of the high-altitude operation platform, and an inclined strut is arranged at the outer side of the guardrail; and the high-altitude operation platform is provided with a transfer device for transferring the component to be installed to the installation position from the edge of the high-altitude operation platform.
Further, a lighting device is arranged on the high-altitude operation platform.
A high-altitude operation platform building method is used for building the high-altitude operation platform and comprises the following steps:
step 1: building a temporary construction stair and a high-altitude packway leading to the lower chord of the truss;
step 2: laying a transfer device for transferring the to-be-mounted member including the newly-added platform beam and the base plate to a mounting position from the edge of the high-altitude operation platform;
and step 3: hoisting the newly added platform beam to the edge of the high-altitude operation platform, and then transferring to a mounting position and mounting;
and 4, step 4: and hoisting the base plate to the edge of the high-altitude operation platform, and then transferring to a mounting position and mounting.
Further, the step 2 is divided into the following sub-steps:
step 2.1: a plurality of sliding ropes penetrating through the whole high-altitude operation platform are horizontally arranged above the lower chord of the truss, and the sliding ropes are parallel to each other;
step 2.2: each sliding rope is provided with a hook with a traction rope in a sliding way.
Further, the following method is adopted in step 3 and step 4 to transport the component to be installed to the installation position: respectively connecting two ends of a lifting rope to two ends of a member to be installed, hooking a hook of a hoisting machine at a position where the lifting rope deviates from the midpoint, and hoisting the member to be installed to one end of a sliding rope; and hooking a hook on the sliding rope on the lifting rope, taking down the hook of the hoisting machine, and towing the member to be mounted to the mounting position by using the towing rope.
Further, in the step 3 and the step 4, the members to be installed are gradually installed towards the periphery by taking each temporary construction stair as a starting point; if the existing platform with the same height as the lower chord of the truss exists on site, the temporary construction staircases and the existing platform are taken as starting points, and the members to be installed are installed gradually towards the periphery.
Compared with the prior art, the high-altitude operation platform arranged on the lower chord of the truss and the construction method thereof have the following beneficial effects:
according to the invention, a series of existing beams including the lower chord members of the truss and the pavement beams are connected into a latticed structure through the newly added platform beams, and then the backing plates are laid on the latticed structure to form a complete and large-area aerial operation platform, so that the aerial operation is changed into a construction process similar to indoor operation, the safety of truss construction is greatly improved, the psychological burden of constructors on the aerial operation is solved, and the construction efficiency is obviously improved. In addition, the complete large-area high-altitude operation platform also allows night construction;
according to the invention, the high-altitude operation platform completely separates the truss from the ground, so that the problem of falling objects in high-altitude operation is solved, the truss operation and the ground operation can be carried out simultaneously, and the construction efficiency is obviously improved;
in the invention, the aerial operation platform can be also provided with a sliding rope for secondary transportation, so that a constructor can conveniently transport a component to be installed to a required position;
the invention can be directly expanded on the truss with the built high-altitude packway, and fully utilizes the existing device.
Drawings
FIG. 1 is a schematic structural view of an aerial work platform of the present invention mounted on the lower chord of a truss;
FIG. 2 is a schematic view of the connection of the connector link to the horseway beam;
FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 2;
FIG. 4 is a schematic view of the hoisting of a component to be installed;
FIG. 5 is a schematic illustration of the transfer of a component to be installed;
FIG. 6 is an effect diagram of the high-altitude operation platform after the assembly
The method comprises the following steps of 1-truss lower chord, 2-high-altitude fairway, 21-fairway beam, 31-newly-added platform beam, 311-connecting buckle, 32-backing plate, 4-existing platform, 5-component to be installed, 6-sliding rope and 7-traction rope.
Detailed Description
As shown in figure 1, the high-altitude operation platform arranged on the lower chord of the truss comprises high-altitude corridors 2 arranged on a lower chord 1 of the truss, wherein the edge of each high-altitude corridor 2 is provided with a corridor beam 21, and the high-altitude operation platform further comprises a newly-added platform beam 31 which is arranged between the high-altitude corridors 2 and used for dividing a gap between the high-altitude corridors 2 into grids capable of being paved with backing plates 32. The high-altitude riding track 2 has two functions, one function is used as a pedal in the process of building a high-altitude operation platform, and the other function is used as a connecting point for providing a newly added platform beam 31. Because the welding operation on the truss lower chord 1 is not suitable for too many welding operations, the welding can affect the strength of the truss lower chord 1, and the high-altitude packway 2 can not affect the building structure. Therefore, the newly added platform beam 31 should be connected to the berm 21 as much as possible, and only if the distance between the high-altitude berms 2 is too large, the newly added platform beam 31 can be considered to be connected to the truss lower chord 1.
In this embodiment, the newly added platform beam 31 includes a main beam of i-steel and an auxiliary beam of square steel pipe, and the main beam is first lapped, and then the auxiliary beam perpendicular to the main beam is lapped on the main beam, and the two are combined into a grid shape to fill the gap between the high-altitude streets 2. The auxiliary beams are arranged for reducing weight, because if I-shaped steel is selected as the newly added platform beam 31, the workload of the hoisting process is too large. If the gap between the high-altitude riding track 2 is small, only the auxiliary beam can be paved, the auxiliary beam is directly erected on the existing beam, even the newly added platform beam 31 is not paved, and the backing plate 32 is directly paved on the existing beam. What kind of new platform beam 31 is arranged and how dense it is depends on whether the base plate 32 can be made to be free from deformation caused by treading after laying.
The existing beam of the high-altitude operation platform comprises a pavement beam 21 and a truss lower chord 1, a newly-added platform beam 31 and the existing beam form a criss-cross grid structure, and a backing plate 32 is laid on the grid structure.
The end of the newly added platform beam 31 is erected on the existing beam and is fixedly connected with the existing beam. Note that the newly added platform beam 31 must be erected on the existing beam, because the construction process of the aerial operation platform of the present invention is also aerial work, the movement of the components should be reduced as much as possible, ideally, the platform beam is directly placed at the installation position after being taken off from the hook, and only the lap joint can meet the requirement.
One end of the newly added platform beam 31 is provided with a connecting buckle 311 for preventing the platform beam from sliding off when being built.
As shown in fig. 2-3, the newly added platform beam 31 is a steel beam, the connecting buckle 311 is a section of channel steel with a downward opening, and one side of the channel steel is welded and connected with the end surface of the newly added platform beam 31; one end of the newly added platform beam 31 with the connecting buckle 311 is buckled on the existing beam through the connecting buckle 311, the connecting buckle 311 is connected with the existing beam in a welding mode, and the other end of the newly added platform beam is directly arranged on the existing beam and connected with the existing beam in a welding mode. The advantage of this connection is that it can be placed on an existing beam directly after being removed from the hook, and there is no need to worry about its slipping off. To why the other end is not provided with a connector link 311, because the length of the newly added platform beam 31 cannot exactly match the spacing between two existing beams. It is of course also possible to directly bridge the newly added platform beam 31 to two existing beams and then weld them, which is simple but risky to fall off. In addition, the berm 21 is generally a channel steel with an outward opening, a connecting plate can be welded in the opening of the channel steel in advance, and then the newly added platform beam 31 is connected with the berm 21 through the connecting plate, so that welding at high altitude is not needed, only nuts are screwed, and the construction difficulty can be reduced. In addition, fig. 2-3 show the connection between the rectangular pipe and the channel steel, but the connection mode is not limited to the connection between the two types of steel sections, and the connection mode can be adopted between any types of steel sections.
The backing plate 32 is a steel springboard, the backing plate 32 is matched with grids in the grid-shaped structure and corresponds to the grids one by one, a backing plate 32 is arranged in each grid, and the edge of the backing plate 32 is fixedly connected with the grids. In actual construction, the steel gangplank can be bound to the grid by binding wires, attention should be paid to tight connection among the gangplanks during binding, and no gap is reserved. The pad 32 must be chosen to ensure that it does not deform after being stepped on, since the pad 32 is only rigidly supported at the edges and completely suspended in the middle. Boards with indeterminate factors such as wood are not used as far as possible, and the tie plates 32 should be inspected before use, if at all.
A zigzag construction stair is arranged below the high-altitude operation platform; the guardrail is arranged at the edge of the high-altitude operation platform, and the inclined strut is arranged outside the guardrail; the high-altitude operation platform is provided with a transfer device for transferring the component 5 to be installed to an installation position from the edge of the high-altitude operation platform.
And the high-altitude operation platform is provided with a lighting device. The lighting device adopts 600w LED lamps, and the LED lamps are arranged at an interval of 30 m. An S-shaped hook processed by steel bars with the diameter of 20mm is hung on the truss, an insulating sleeve is sleeved outside the S-shaped hook to prevent electric leakage, and the hanging height of a fixed lighting lamp installed indoors is not lower than 2.5 m.
The invention relates to a construction method of a high-altitude operation platform, which comprises the following steps:
step 1: building a temporary construction stair leading to the lower chord of the truss and a high-altitude packway 2;
the temporary construction stair is a zigzag construction stair, can be erected by adopting a fastener type scaffold, and also can be erected after being overlapped by adopting a ladder cage. If the high-altitude packway 2 is already built and needs to be expanded on the high-altitude packway 2, the stairs of the packway can be used as temporary construction stairs;
step 2: laying a transfer device for transferring the component 5 to be installed from the edge of the high-altitude operation platform to an installation position; the component 5 to be installed comprises a newly added platform beam 31, a base plate 32 and the like, and the specific steps are as follows:
step 2.1: a plurality of sliding ropes 6 penetrating through the whole high-altitude operation platform are horizontally arranged above the lower chord of the truss, and the sliding ropes 6 are parallel to each other; note that here, when lashing the rope 6, some padding should be padded inside the rope 6 to avoid being worn off or injuring the lashing position;
step 2.2: each slide rope 6 is provided with a hook with a traction rope 7 in a sliding way.
The transfer device is still useful after being built and can be reserved to be used as a part of a high-altitude operation platform for transferring other components in the truss construction process.
And step 3: hoisting the newly added platform beam 31 to the edge of the high-altitude operation platform, and then transferring to a mounting position for mounting;
and 4, step 4: the skid plate 32 is hoisted to the edge of the aerial work platform and then transported to the installation site and installed.
As shown in fig. 4 to 5, the following method is adopted in step 3 and step 4 to transport the member to be mounted 5 to the mounting position: respectively connecting two ends of a lifting rope to two ends of a member to be installed 5, hooking a hook of a hoisting machine at a position where the lifting rope deviates from the midpoint, and hoisting the member to be installed 5 to one end of a sliding rope 6; the hook on the sliding rope 6 is hooked on the lifting rope, the hook of the hoisting machine is taken down, and the component 5 to be installed is pulled to the installation position by the pulling rope 7. The transfer process of the hoisted component is very dangerous and needs to be noticed at any time.
Step 3 and step 4, taking each temporary construction stair as a starting point, and gradually installing members 5 to be installed to the periphery; if the existing platform 4 with the height equal to the lower chord of the truss exists on site, the members 5 to be installed are gradually installed towards the periphery by taking each temporary construction stair and the existing platform 4 as starting points.
After the assembly is completed, the effect is shown in fig. 6.
In this embodiment, since the air conditioning platform having the same height as the lower chord of the truss already exists on the site, the air conditioning platform is used as a part of the high-altitude operation platform, the member to be installed 5 may be installed from the air conditioning platform, and the newly added platform beam 31 near the air conditioning platform may also be connected to the air conditioning platform. Of course, the existing platform 4 is not limited to an air-conditioning platform, and can be used as long as the strength is enough to accelerate the construction progress and provide a connection point for the newly added platform beam 31.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a set up high altitude operation platform on truss lower chord, is including setting up high altitude packway (2) on truss lower chord (1), high altitude packway (2) border has packway roof beam (21), its characterized in that: the high-altitude operation platform also comprises a newly added platform beam (31) which is arranged between the high-altitude corridors (2) and used for dividing a gap between the high-altitude corridors (2) into grids capable of laying a backing plate (32);
the existing beam on the high-altitude operation platform comprises a pavement beam (21) and a truss lower chord (1), the newly-added platform beam (31) and the existing beam form a criss-cross grid structure, and a backing plate (32) is laid on the grid structure;
the end part of the newly-added platform beam (31) is erected on the existing beam and is fixedly connected with the existing beam.
2. The high altitude operation platform arranged on the lower chord of the truss according to claim 1, wherein: one end of the newly added platform beam (31) is provided with a connecting buckle (311) for preventing the platform beam from sliding down when being built.
3. The high altitude operation platform arranged on the lower chord of the truss according to claim 2, wherein: the newly added platform beam (31) is a steel beam, the connecting buckle (311) is a section of channel steel with a downward opening, and one side of the channel steel is welded and connected with the end face of the newly added platform beam (31); one end of the newly-added platform beam (31) with the connecting buckle (311) is buckled on the existing beam through the connecting buckle (311), the connecting buckle (311) is connected with the existing beam in a welding mode, and the other end of the newly-added platform beam is directly arranged on the existing beam and connected with the existing beam in a welding mode.
4. The high altitude operation platform arranged on the lower chord of the truss according to claim 1, wherein: backing plate (32) are the springboard, backing plate (32) with grid phase-match and one-to-one among the latticed structure sets up a backing plate (32) in every grid, backing plate (32) border and grid fixed connection.
5. The high altitude operation platform arranged on the lower chord of the truss according to claim 1, wherein: a zigzag construction stair is arranged below the high-altitude operation platform; a guardrail is arranged at the edge of the high-altitude operation platform, and an inclined strut is arranged at the outer side of the guardrail; the high-altitude operation platform is provided with a transfer device for transferring the component (5) to be installed to an installation position from the edge of the high-altitude operation platform.
6. The high altitude operation platform arranged on the lower chord of the truss according to claim 1, wherein: and the high-altitude operation platform is provided with a lighting device.
7. A high-altitude operation platform building method is characterized by comprising the following steps: the construction of a high-altitude operation platform arranged on the lower chord of a truss and used as any one of the claims 1 to 6 comprises the following steps:
step 1: building a temporary construction stair and a high-altitude packway (2) leading to the lower chord of the truss;
step 2: paving a transfer device for transferring the component (5) to be mounted, including the newly added platform beam (31) and the base plate (32), from the edge of the high-altitude operation platform to a mounting position;
and step 3: hoisting the newly added platform beam (31) to the edge of the high-altitude operation platform, and then transferring to an installation position for installation;
and 4, step 4: and hoisting the base plate (32) to the edge of the high-altitude operation platform, and then transporting to an installation position and installing.
8. The construction method of the high-altitude operation platform as claimed in claim 7, wherein the construction method comprises the following steps: step 2 comprises the following sub-steps:
step 2.1: a plurality of sliding ropes (6) penetrating through the whole high-altitude operation platform are horizontally arranged above the lower chord of the truss, and the sliding ropes (6) are parallel to each other;
step 2.2: each slide rope (6) is provided with a hook with a traction rope (7) in a sliding way.
9. The construction method of the high-altitude operation platform as claimed in claim 8, wherein the construction method comprises the following steps: in the steps 3 and 4, the component (5) to be installed is transferred to the installation position by adopting the following method: two ends of a lifting rope are respectively connected to two ends of a member (5) to be installed, a hook of a hoisting machine is hooked at a position, deviating from the midpoint, of the lifting rope, and the member (5) to be installed is hoisted to one end of a sliding rope (6); the hook on the sliding rope (6) is hooked on the lifting rope, the hook of the hoisting machine is taken down, and the component (5) to be installed is pulled to the installation position by the pulling rope (7).
10. The construction method of the high-altitude operation platform as claimed in claim 7, wherein the construction method comprises the following steps: step 3 and step 4, taking each temporary construction stair as a starting point, and gradually installing members (5) to be installed to the periphery; if the existing platform (4) with the height equal to that of the lower chord of the truss exists on site, the components (5) to be installed are installed gradually towards the periphery by taking each temporary construction stair and the existing platform (4) as starting points.
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| CN202011033453.6A CN112160576B (en) | 2020-09-27 | 2020-09-27 | High-altitude operation platform arranged on lower chord of truss and construction method thereof |
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| CN202011033453.6A CN112160576B (en) | 2020-09-27 | 2020-09-27 | High-altitude operation platform arranged on lower chord of truss and construction method thereof |
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| CN112160576B CN112160576B (en) | 2021-05-25 |
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