CN116517325A - Novel assembled steel-wood stair for existing building additionally provided with elevator and construction method thereof - Google Patents
Novel assembled steel-wood stair for existing building additionally provided with elevator and construction method thereof Download PDFInfo
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- CN116517325A CN116517325A CN202211089447.1A CN202211089447A CN116517325A CN 116517325 A CN116517325 A CN 116517325A CN 202211089447 A CN202211089447 A CN 202211089447A CN 116517325 A CN116517325 A CN 116517325A
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- 239000002023 wood Substances 0.000 title claims abstract description 92
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 150
- 239000010959 steel Substances 0.000 claims abstract description 150
- 239000000428 dust Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 238000004873 anchoring Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 238000009957 hemming Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009435 building construction Methods 0.000 abstract 1
- 239000011324 bead Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
A novel assembled steel-wood stair for an existing building to be additionally provided with an elevator and a construction method thereof relate to the technical field of assembled buildings, and in particular relate to a novel assembled steel-wood stair for an existing building to be additionally provided with an elevator and a construction method thereof. The building construction method comprises a platform and a stair bench, wherein the right side of the platform is fixedly connected with the stair bench, and the left side of the platform is anchored in a wall body; the stair bench comprises footboard, saw-dust piece, bench roof beam, steel pull rod, and several footboard end to end all fixedly provided with a saw-dust piece in the inboard of several footboard, the both sides fixedly connected with bench roof beam of several footboard, the steel pull rod is pegged graft in the bottom of saw-dust piece. After the technical scheme is adopted, the invention has the beneficial effects that: the whole stress is uniform, and the whole structure is more stable; the rapid assembly and construction are simple; noise is reduced, and the environment is protected; the whole steel consumption is reduced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of assembled buildings, in particular to a novel assembled steel-wood stair for an existing building to be additionally provided with an elevator and a construction method thereof.
Background
Based on the current situation that most old multi-storey houses are not additionally provided with elevators and according with national policy calls, the service of additionally providing the elevators for the old residential houses is gradually increased, but a series of problems such as construction, noise, lighting and the like are also brought to the old residential houses when the elevators are additionally provided. In order to avoid affecting lighting, the elevators are additionally arranged at one side of the stairwell, and the scheme of additionally arranging the elevators at one side of the stairwell can be divided into two types of flat-floor entrance and half-floor entrance. The elevator is generally additionally arranged on the floor rest platform, and is level with the floor, so that the elevator is more convenient for an owner to enter the house, but has higher requirements on the house type; the half floor home-entering type elevator is additionally arranged on the middle platform, and although the elevator can not directly enter the home, the elevator is not influenced by the functional layout of the house; both methods of installing the elevator need to reform the landing and the bench of the original old residence.
The existing stair treatment method is basically to open holes on the outer wall of a stairwell and reinforce the outer wall of the stairwell, after the original stair platform and stair sections are removed, the prefabricated steel structure stair sections are installed in place in a machine hoisting mode, and meanwhile, the steel-concrete horizontal corridor is adopted to connect the stair sections. The method has certain disadvantages: 1. the installation efficiency is lower, and the hoist and mount operation degree of difficulty is great. 2. The steel structure bench is loud in noise, and affects the life of residents. 3. The stress is uneven, and the structure is not stable. 4. The steel consumption is large and the cost is high.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides a novel assembled steel-wood stair for the existing building to be additionally provided with an elevator and a construction method thereof, which have the advantages of quick assembly and simple construction; noise is reduced, and the environment is protected; the whole stress is uniform, and the whole structure is more stable; the steel consumption is reduced, and the cost is lower.
In order to achieve the above purpose, the invention adopts the following technical scheme: a novel assembled steel-wood stair for an existing building to be additionally provided with an elevator comprises a platform 1 and a stair tread 2, wherein the right side of the platform 1 is fixedly connected with the stair tread 2, and the left side of the platform 1 is anchored in a wall body 3; the platform 1 comprises a platform steel plate 11, a platform beam 12, a wood chip plate 13 and a platform steel grid 14, wherein the left side of the platform steel plate 11 is anchored in a wall body 3, the right side below the platform steel plate 11 is fixedly provided with the platform beam 12, the rear side of the platform beam 12 is anchored in the wall body 3, the left side of the platform beam 12 is fixedly connected with the wood chip plate 13, the upper surface of the wood chip plate 13 is fixedly connected with the lower surface of the platform steel plate 11, the platform steel grid 14 is arranged below the wood chip plate 13, and the right side of the platform steel grid 14 is fixedly connected with the platform beam 12; the stair bench 2 comprises pedals 21, wood chip blocks 22, bench beams 23 and steel pull rods 24, the pedals 21 are connected end to end, the wood chip blocks 22 are fixedly arranged on the inner sides of the pedals 21, the bench beams 23 are fixedly connected to the two sides of the pedals 21, and the steel pull rods 24 are inserted into the bottom ends of the wood chip blocks 22.
The wood chip plate 13 is fixedly connected with the platform steel plate 11 and the platform beam 12 through an adhesive. The wood chip plate 13 is used for filling the platform, so that the steel consumption can be reduced, and meanwhile, the noise generated when a resident steps on the pedal when entering a house is reduced, and the environment-friendly concept is met.
The pedal 21 comprises a transverse pedal 211, a longitudinal pedal 212 and a solid rod 213, wherein fixing curled edges 214 are arranged on two sides or one side of the transverse pedal 211, connecting curled edges 215 are arranged on two sides or one side of the longitudinal pedal 212, the fixing curled edges 214 at one end of the transverse pedal 211 are hooked with the connecting curled edges 215 at the upper end of the longitudinal pedal, and the solid rod 213 is inserted into the inner side of the connecting part of the transverse pedal 211 and the longitudinal pedal 212. The two sides of the transverse pedal 211 and the longitudinal pedal 212 are provided with curled edges for convenient connection, and the solid rods 213 are inserted into the connection parts, so that the connection is more stable.
The wood chip blocks 22 are fixedly connected with the pedals 21 through an adhesive. The wood chip blocks 22 are arranged between the pedals 21, so that noise is reduced, steel consumption is reduced, cost is reduced, and the pedal is more environment-friendly.
Two T-shaped grooves 221 are formed in the bottom end of the wood chip block 22, and steel pull rods 24 are inserted into the inner sides of the T-shaped grooves 221; the steel tie rod 24 is an i-section steel tie rod. The bottom of saw-dust piece 22 is provided with recess 221 to dispose corresponding I-shaped steel pull rod 24, make whole being mortise and tenon fourth of twelve earthly branches structure, it is more firm reliable to connect.
An inclined stay bar 25 is arranged between the pedal 21 and the bench beam 23, the inclined stay bar 25 comprises a cylindrical connecting block 251 and a connecting rod 252, the side edge of the connecting block 251 is connected to the top end of the connecting rod 252, the other end of the connecting rod 252 is fixedly connected with the bench beam 23, and the connecting block 251 is fixedly connected with the hemming connection part of the pedal 21. The inclined stay bars 25 are used for further fixedly connecting the stair bench with the bench beam, so that the whole stress is uniform, and the whole is more stable; simultaneously, the solid rod can be fixed at the hemmed connection part, so that the pedal connection is more stable.
The bench beam 23 is a T-shaped steel beam. The tread beam 23 serves to stabilize the tread 21, making the stair tread 2 more stable.
In order to achieve the above purpose, the invention adopts the following technical scheme: a novel construction method for an assembled steel-wood stair for an existing building to be additionally provided with an elevator comprises the following steps:
step one: according to the overall size of the steel-wood stairs required in the actual engineering project, determining the size and the number of the stair platform steel plates 11, the platform beams 12, the wood chip plates 13, the platform steel grids 14, the transverse pedals 211, the longitudinal pedals 212, the solid rods 213, the wood chip blocks 22, the stair section beams 23 and the steel pull rods 24; prefabricating corresponding parts.
Step two: the method comprises the steps of finishing the dismantling of stairs of an original building according to a mode of elevator home entry; if the flat floor is adopted for entering a house, part of the stair sections and the platform need to be dismantled; when the half floor is adopted for entrance, all the original stair sections and platforms are removed in sections; then, starting to install from the top layer to the bottom layer according to the positioning of the original stairs;
step three: platform 1 is first installed. Firstly, hoisting a platform steel plate 11 to the original platform position, and carrying out anchoring treatment on the platform steel plate and the corresponding wall body 3; anchoring the wall body 3 at one end of the platform beam 12, and performing welding treatment on the contact part of the platform steel plate 11 and the platform beam 12; finally, the wood chip plate 13 and the platform steel grid 14 are sequentially arranged below the platform steel plate 22, the platform steel grid 14 and the platform beam 12 are welded, and the wood chip plate 13 is fixed with the platform steel plate 11 and the platform beam 12 through an adhesive. Taking this as an example, the installation of each floor of the stair platform 1 is completed;
step four: and installing a stair tread. Firstly, a curled edge 214 at one end of a transverse pedal 211 and a curled edge at the upper end of a longitudinal pedal 212 are hooked and connected into a stair pedal 21; depending on the dimensions, a desired number of pedals 21 are assembled, with two pedals 21 being single hemmed pedals. (one end of the lateral pedal 211 in the pedal at the head end is not curled and the lower end of the longitudinal pedal 212 in the end pedal is not curled);
the first single-hemmed pedal is transversely placed and connected with the platform steel plate, one side without hemming is welded with the platform steel plate, then the hemmed position of the pedal 21 is hooked Lian Yanshen to the next stair steel platform, the welding is performed similarly, and meanwhile, the spot welding is performed on the hemmed connection position, so that the stair segment structure is further reinforced. Similarly, the pre-installation of each layer of ladder section can be completed;
step five: and a wood chip block 22 is placed under the pedal 21, the wood chip block 22 is attached to the inner side of the pedal 21, and meanwhile, the bench beam is welded 23 to two sides of the bench (the welding treatment is carried out with the platform beam 12, and the embedding or anchoring treatment is carried out with the concrete ground). The solid bar 213 is placed in the hole where the two curls are connected, and the bent connection part of the pedal plate and the T-shaped steel beam are further welded and reinforced by the diagonal brace 25. Finally, steel pull rods 24 are inserted along the grooves 221 on the bottom surface of the wood chip block 22 (the number of the concrete steel pull rods 24 can be determined according to the actual plate size and the requirements), and each section of steel pull rods 24 can be connected by welding;
rivets may be used to strengthen the steel tie rods 24 when they are in contact with the ground, and welds may be used to join the steel tie rods 24 to the landing beams 12 when they are in contact with the steel landing 1. The replacement of the ladder sections of each floor can be completed according to the method.
After the technical scheme is adopted, the invention has the beneficial effects that: 1. the whole stress is uniform, and the whole structure is more stable; the steel-wood stair provided by the invention adopts the glued wood chip plates with the grooves as the bench filler, and is provided with the I-shaped steel pull rods corresponding to the sizes of the grooves so as to enable the whole steel-wood stair to be in mortise-tenon connection, so that the connection is stable and reliable; and meanwhile, the inclined stay bars are used for connecting the bench beams with the stair bench, so that the whole stress is uniform, and the whole structure is more stable.
2. The steel-wood stair provided by the invention has the advantages of rapid assembly and simple construction. The operation difficulty of lifting the steel structure stair component required by the existing stair reconstruction is reduced, and the assembly efficiency of the original stair reconstruction when the elevator is additionally installed is improved; the construction is efficient and convenient, and the rapid construction of the lightweight steel structure stairway is realized to a certain extent.
3. Noise is reduced, and the environment is protected; the invention uses the steel-wood mixed structure, solves the problem of complex construction of the concrete cast-in-situ stair, reduces the influence of noise caused by the step plate when residents step on the step plate at home on the life of the residents by arranging the method for bonding the wood chip plates under the step plate and the stair platform, and is more in line with the environment-friendly idea of the assembled building.
4. The invention adopts the steel-wood structure, the manufacturing cost of the built-in bonding wood chip plate is low, the whole steel consumption is reduced, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Figure 1 is a schematic view of the structure of the invention when entering a home in a flat layer,
figure 2 is a schematic diagram of the structure of the present invention when a half-layer is entered into a home,
figure 3 is a schematic view of the structure of the platform according to the present invention,
figure 4 is a schematic view of the ladder section of the invention,
figure 5 is a schematic side view of a stair run according to the invention,
figure 6 is a schematic view of the structure of the pedal in the present invention,
figure 7 is a schematic view of the pedal attachment structure of the present invention,
figure 8 is a schematic view of section a of figure 6,
figure 9 is a schematic view of the structure of the wood chip block of the present invention,
figure 10 is a schematic view of the structure of the diagonal brace of the present invention,
figure 11 is a schematic view of the structure of the steel tie rod of the present invention,
figure 12 is a schematic view of the construction of the ladder beam of the present invention,
fig. 13 is a schematic view of the structure of the platform steel grid of the present invention.
Reference numerals illustrate: platform 1, platform steel plate 11, platform beam 12, wood chip plate 13, platform steel grid 14, stair tread 2, tread 21, lateral tread 211, longitudinal tread 212, solid bar 213, fixed bead 214, connecting bead 215, wood chip block 22, groove 221, stair tread beam 23, steel tie bar 24, diagonal brace 25, connecting block 251, connecting bar 252, wall 3, raw concrete stair 4, underlying concrete floor 5.
Detailed Description
Example 1
Referring to fig. 1, the technical scheme adopted in this embodiment is as follows: a novel assembled steel-wood stair for an existing building additionally provided with an elevator comprises a platform 1 and a stair bench 2, wherein the left side of the platform 1 is anchored in a wall body 3, the right side of the platform 1 is fixedly connected with the stair bench 2, and the lower end of the stair bench 2 is riveted with the bottom end of an original concrete stair 4.
The platform 1 includes platform steel sheet 11, platform roof beam 12, saw-dust board 13, platform steel grid 14, and the left side anchor of platform steel sheet 11 is in wall body 3, and platform steel sheet 11 below right side fixed mounting has platform roof beam 12, and the rear side anchor of platform roof beam 12 is in wall body 3, and the left side fixedly connected with saw-dust board 13 of platform roof beam 12, the upper surface of saw-dust board 13 and the lower fixed surface of platform steel sheet 11 are connected, and the below of saw-dust board 13 is provided with platform steel grid 14, the right side fixedly connected with platform roof beam 12 of platform steel grid 14.
The stair tread 2 consists of pedals 21, wood dust blocks 22, tread beams 23 and steel pull rods 24, wherein a plurality of pedals 21 are connected end to end, each pedal 21 comprises a transverse pedal 211, a longitudinal pedal 212 and a solid rod 213, fixed curled edges 214 are arranged on two sides or one side of each transverse pedal 211, connecting curled edges 215 are arranged on two sides or one side of each longitudinal pedal 212, the fixed curled edges 214 at one end of each transverse pedal 211 are hooked with the connecting curled edges 215 at the upper end of each longitudinal pedal, and the solid rods 213 are inserted into the inner sides of the connecting positions of the transverse pedals 211 and the longitudinal pedals 212; the inner sides of the pedals 21 are fixedly provided with a wood chip block 22 through an adhesive, two sides of the pedals 21 are fixedly connected with a bench beam 23, and a steel pull rod 24 is inserted into the bottom end of the wood chip block 22; two T-shaped grooves 221 are formed in the bottom end of the wood chip block 22, and steel pull rods 24 are inserted into the inner sides of the T-shaped grooves 221; the steel tie rod 24 is an i-section steel tie rod. When the stair tread is used, the transverse pedal 211 and the longitudinal pedal 212 are hooked through the curled edges to form the pedal 21, the plurality of pedals 21 are hooked through the curled edges to form a stair tread, the two fixedly connected stair tread amounts are respectively connected with the stair tread surfaces, the wood chip blocks 22 are arranged on the inner sides of the pedals 21, and the steel pull rods 24 are arranged on the back sides of the wood chip blocks 22, so that the stair tread is more stable and is even in stress, convenient to install and capable of reducing steel consumption.
An inclined stay bar 25 is arranged between the pedal 21 and the bench beam 23, the inclined stay bar 25 comprises a cylindrical connecting block 251 and a connecting rod 252, the side edge of the connecting block 251 is arranged at the top end of the connecting rod 252, the other end of the connecting rod 252 is fixedly connected with the bench beam 23, and the connecting block 251 is fixedly connected with the hemming connection part of the pedal 21; the bench beam 23 is a T-shaped steel beam. The diagonal braces further fixedly connect the tread 21 to the flight beam 23 so that the stair flight is more stable.
In order to achieve the above purpose, the invention adopts the following technical scheme: a novel construction method for an assembled steel-wood stair for an existing building to be additionally provided with an elevator comprises the following steps:
step one: according to the overall size of the steel-wood stairs required in the actual engineering project, determining the size and the number of the stair platform steel plates 11, the platform beams 12, the wood chip plates 13, the platform steel grids 14, the transverse pedals 211, the longitudinal pedals 212, the solid rods 213, the wood chip blocks 22, the stair section beams 23 and the steel pull rods 24; prefabricating corresponding parts.
Step two: adopting a flat floor for entrance, and dismantling part of stair sections and platforms; and then the installation is started from the top layer to the bottom layer according to the positioning of the original stairs.
Step three: platform 1 is first installed. Firstly, hoisting a platform steel plate 11 to the original platform position, and carrying out sitting and anchoring treatment on the corresponding position of the wall body 3; and placing the I-shaped platform beam 12 at a proper position below the platform steel plate 11, anchoring the I-shaped platform beam 12 and the wall body, adhering the wood chip plate below the platform steel plate 11 and on the left side of the I-shaped platform beam 12 by using an adhesive, and finally welding a platform steel grid on the left side of the I-shaped platform beam 12. Taking this as an example, the installation of each floor of the stair platform 1 is completed.
Step four: and installing a stair tread. Firstly, a curled edge 214 at one end of a transverse pedal 211 and a curled edge at the upper end of a longitudinal pedal 212 are hooked and connected into a stair pedal 21; a plurality of pedals 21 are installed according to the need.
The first pedal 21 is a single hemmed pedal mounted from a top platform to a bottom. The single-curled pedal is transversely placed and connected with the platform steel plate, one side without curled edges is welded with the platform steel plate, then the curled edges of the pedal 21 are hooked Lian Yanshen to the next stair steel platform, the welding is performed similarly, and meanwhile spot welding is performed on the curled edge connection parts, so that the stair section structure is further reinforced.
Step five: a plurality of pedals 21 are adhered with a wood chip block 22 through an adhesive, the wood chip block 22 is adhered to the inner sides of the pedals 21, and meanwhile, step beams are welded 23 to two sides of a step. The solid bar 213 is placed in the hole where the two curls are connected, and the bent connection part of the pedal plate and the T-shaped steel beam are further welded and reinforced by the diagonal brace 25. Finally, I-shaped steel pull rods 24 are inserted along the grooves 221 on the bottom surface of the wood chip block 22 (the number of the specific steel pull rods 24 can be determined according to the actual plate size and the requirement), and each section of I-shaped steel pull rods 24 can be connected by welding.
The length of the I-shaped steel pull rod 24 is longer than the stair tread, and the exceeding length of the I-shaped steel pull rod 24 is used for riveting the original concrete stair 4.
Example 2
Referring to fig. 2-13, the technical scheme adopted in the specific embodiment is as follows: a novel assembled steel-wood stair for an existing building additionally provided with an elevator comprises a platform 1 and a stair tread 2, wherein the left side of the platform 1 is anchored in a wall 3, and the right side of the platform 1 is fixedly connected with the stair tread 2.
The platform 1 includes platform steel sheet 11, platform roof beam 12, saw-dust board 13, platform steel grid 14, and the left side anchor of platform steel sheet 11 is in wall body 3, and platform steel sheet 11 below right side fixed mounting has platform roof beam 12, and the rear side anchor of platform roof beam 12 is in wall body 3, and the left side fixedly connected with saw-dust board 13 of platform roof beam 12, the upper surface of saw-dust board 13 and the lower fixed surface of platform steel sheet 11 are connected, and the below of saw-dust board 13 is provided with platform steel grid 14, the right side fixedly connected with platform roof beam 12 of platform steel grid 14.
The stair tread 2 consists of pedals 21, wood dust blocks 22, tread beams 23 and steel pull rods 24, wherein a plurality of pedals 21 are connected end to end, each pedal 21 comprises a transverse pedal 211, a longitudinal pedal 212 and a solid rod 213, fixed curled edges 214 are arranged on two sides or one side of each transverse pedal 211, connecting curled edges 215 are arranged on two sides or one side of each longitudinal pedal 212, the fixed curled edges 214 at one end of each transverse pedal 211 are hooked with the connecting curled edges 215 at the upper end of each longitudinal pedal, and the solid rods 213 are inserted into the inner sides of the connecting positions of the transverse pedals 211 and the longitudinal pedals 212; the inner sides of the pedals 21 are fixedly provided with a wood chip block 22 through an adhesive, two sides of the pedals 21 are fixedly connected with a bench beam 23, and a steel pull rod 24 is inserted into the bottom end of the wood chip block 22; two T-shaped grooves 221 are formed in the bottom end of the wood chip block 22, and steel pull rods 24 are inserted into the inner sides of the T-shaped grooves 221; the steel tie rod 24 is an i-section steel tie rod. When the stair tread is used, the transverse pedal 211 and the longitudinal pedal 212 are hooked through the curled edges to form the pedal 21, the plurality of pedals 21 are hooked through the curled edges to form a stair tread, the two fixedly connected stair tread amounts are respectively connected with the stair tread surfaces, the wood chip blocks 22 are arranged on the inner sides of the pedals 21, and the steel pull rods 24 are arranged on the back sides of the wood chip blocks 22, so that the stair tread is more stable and is even in stress, convenient to install and capable of reducing steel consumption.
An inclined stay bar 25 is arranged between the pedal 21 and the bench beam 23, the inclined stay bar 25 comprises a cylindrical connecting block 251 and a connecting rod 252, the side edge of the connecting block 251 is arranged at the top end of the connecting rod 252, the other end of the connecting rod 252 is fixedly connected with the bench beam 23, and the connecting block 251 is fixedly connected with the hemming connection part of the pedal 21; the bench beam 23 is a T-shaped steel beam. The diagonal braces further fixedly connect the tread 21 to the flight beam 23 so that the stair flight is more stable.
In order to achieve the above purpose, the invention adopts the following technical scheme: a novel construction method for an assembled steel-wood stair for an existing building to be additionally provided with an elevator comprises the following steps:
step one: according to the overall size of the steel-wood stairs required in the actual engineering project, determining the size and the number of the stair platform steel plates 11, the platform beams 12, the wood chip plates 13, the platform steel grids 14, the transverse pedals 211, the longitudinal pedals 212, the solid rods 213, the wood chip blocks 22, the stair section beams 23 and the steel pull rods 24; prefabricating corresponding parts.
Step two: adopting a flat floor for entrance, and dismantling part of stair sections and platforms; and then the installation is started from the top layer to the bottom layer according to the positioning of the original stairs.
Step three: platform 1 is first installed. Firstly, hoisting a platform steel plate 11 to the original platform position, and carrying out sitting and anchoring treatment on the corresponding position of the wall body 3; and placing the I-shaped platform beam 12 at a proper position below the platform steel plate 11, anchoring the I-shaped platform beam 12 and the wall body, adhering the wood chip plate below the platform steel plate 11 and on the left side of the I-shaped platform beam 12 by using an adhesive, and finally welding a platform steel grid on the left side of the I-shaped platform beam 12. Taking this as an example, the installation of each floor of the stair platform 1 is completed.
Step four: and installing a stair tread. Firstly, a curled edge 214 at one end of a transverse pedal 211 and a curled edge at the upper end of a longitudinal pedal 212 are hooked and connected into a stair pedal 21; a plurality of pedals 21 are installed according to the need.
The first pedal 21 is a single hemmed pedal mounted from a top platform to a bottom. The single-curled pedal is transversely placed and connected with the platform steel plate, one side without curled edges is welded with the platform steel plate, then the curled edges of the pedal 21 are hooked Lian Yanshen to the next stair steel platform, the welding is performed similarly, and meanwhile spot welding is performed on the curled edge connection parts, so that the stair section structure is further reinforced.
Step five: a plurality of pedals 21 are adhered with a wood chip block 22 through an adhesive, the wood chip block 22 is adhered to the inner sides of the pedals 21, and meanwhile, step beams are welded 23 to two sides of a step. The solid bar 213 is placed in the hole where the two curls are connected, and the bent connection part of the pedal plate and the T-shaped steel beam are further welded and reinforced by the diagonal brace 25. Finally, I-shaped steel pull rods 24 are inserted along the grooves 221 on the bottom surface of the wood chip block 22 (the number of the specific steel pull rods 24 can be determined according to the actual plate size and the requirement), and each section of I-shaped steel pull rods 24 can be connected by welding.
Step six: when the stair bench 2 is positioned in the two platforms 1, the T-shaped bench beam 23 and the I-shaped steel pull rod 24 in the upper end of the stair bench 2 are fixed with the platform beam 12 through welding, and the non-hemmed side of the pedal 21 at the bottom end of the stair bench 2 is fixed with the platform steel plate 11 through welding.
When the bottom end of the stair tread 2 contacts the concrete floor, the I-shaped steel pull rod 24 and the T-shaped tread beam are cast in-situ into the underlying concrete floor.
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (8)
1. Novel an assembled steel wood stair for existing building installs elevator additional, its characterized in that: the novel stair comprises a platform (1) and a stair bench (2), wherein the stair bench (2) is fixedly connected to the right side of the platform (1), and the left side of the platform (1) is anchored in a wall body (3); the platform (1) comprises a platform steel plate (11), a platform beam (12), a wood chip plate (13) and a platform steel grid (14), wherein the left side of the platform steel plate (11) is anchored in a wall body (3), the right side below the platform steel plate (11) is fixedly provided with the platform beam (12), the rear side of the platform beam (12) is anchored in the wall body (3), the wood chip plate (13) is fixedly connected to the left side of the platform beam (12), the upper surface of the wood chip plate (13) is fixedly connected with the lower surface of the platform steel plate (11), the platform steel grid (14) is arranged below the wood chip plate (13), and the right side of the platform steel grid (14) is fixedly connected with the platform beam (12); stair bench (2) comprises footboard (21), saw-dust piece (22), bench roof beam (23), steel pull rod (23), and several footboard (21) end to end, and the inboard of several footboard (21) is all fixed to be provided with saw-dust piece (22), and the both sides fixedly connected with bench roof beam (23) of several footboard (21), and steel pull rod (23) peg graft in the bottom of saw-dust piece (22).
2. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: the wood chip plate (13) is fixedly connected with the platform steel plate (11) and the platform beam (12) through an adhesive.
3. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: the pedal (21) comprises a transverse pedal (211), a longitudinal pedal (212) and a solid rod (213), wherein fixed curled edges (214) are arranged on two sides or one side of the transverse pedal (211), connecting curled edges (215) are arranged on two sides or one side of the longitudinal pedal (212), the fixed curled edges (214) at one end of the transverse pedal (211) are hooked with the connecting curled edges (215) at the upper end of the longitudinal pedal, and the solid rod (213) is inserted into the inner side of the connecting part of the transverse pedal (211) and the longitudinal pedal (212).
4. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: the wood chip blocks (22) are fixedly connected with the pedals (21) through adhesives.
5. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: two T-shaped grooves (221) are formed in the bottom end of the wood chip block (22), and steel pull rods (23) are inserted into the inner sides of the T-shaped grooves (221); the steel pull rod (23) is an I-shaped steel pull rod.
6. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: an inclined stay bar (25) is arranged between the pedal (21) and the bench beam (23), the inclined stay bar (25) comprises a cylindrical connecting block (251) and a connecting rod (252), the side edge of the connecting block (251) is connected to the top end of the connecting rod (252), the other end of the connecting rod (252) is fixedly connected with the bench beam (23), and the connecting block (251) is fixedly connected with the hemming connection part of the pedal (21).
7. The novel fabricated steel-wood stair for an existing building add-on elevator according to claim 1, wherein: the bench beam (23) is a T-shaped steel beam.
8. A novel construction method for an assembled steel-wood stair for an existing building to be additionally provided with an elevator is characterized by comprising the following steps: the method comprises the following steps:
step one: according to the overall size of the steel-wood stairs required in the actual engineering project, determining the size and the number of the stair platform steel plates (11), the platform beams (12), the wood chip plates (13), the platform steel grids (14), the transverse pedals (211), the longitudinal pedals (212), the solid rods 213, the wood chip blocks (22), the stair section beams (23) and the steel pull rods (23); prefabricating corresponding parts;
step two: the method comprises the steps of finishing the dismantling of stairs of an original building according to a mode of elevator home entry; if the flat floor is adopted for entering a house, part of the stair sections and the platform need to be dismantled; when the half floor is adopted for entrance, all the original stair sections and platforms are removed in sections; then, starting to install from the top layer to the bottom layer according to the positioning of the original stairs;
step three: firstly, installing a platform (1), hoisting a platform steel plate (11) to the original platform position, and performing anchoring treatment with a corresponding wall body (3); anchoring the wall body (3) at one end of the platform beam (12), and performing welding treatment on the contact part of the platform steel plate (11) and the platform beam (12); finally, sequentially installing the wood chip plate (13) and the platform steel grid (14) below the platform steel plate (22), performing welding treatment on the platform steel grid (14) and the platform beam (12), and fixing the wood chip plate (13) with the platform steel plate (11) and the platform beam (12) through an adhesive; taking this as an example, the installation of each floor of the stair platform 1 is completed;
step four: installing a stair tread (2), firstly hooking a curled edge 214 at one end of a transverse pedal (211) with a curled edge at the upper end of a longitudinal pedal (212) to form a stair pedal (21); according to the size, assembling the required number of pedals (21), wherein two pedals (21) are single-hemmed pedals, (one end of a transverse pedal (211) in a head pedal is not hemmed, and the lower end of a longitudinal pedal (212) in a tail pedal is not hemmed);
the first single-curled-edge pedal is transversely placed and connected with the platform steel plate, one side without curled edges is welded with the platform steel plate, then the curled edges of the pedal (21) are hooked Lian Yanshen to the next stair steel platform, the welding is performed in the same way, meanwhile, the spot welding is performed at the joint of curled edges, the stair section structure is further reinforced, and similarly, the pre-installation of each stair section can be completed;
step five: placing an adhesive wood chip block (22) under the pedal (21), attaching the wood chip block (22) to the inner side of the pedal (21), simultaneously welding the bench beam (23) to two sides of the bench (welding treatment is carried out on the bench beam (12), embedding or anchoring treatment is carried out on the bench beam and the concrete ground), placing a solid rod (213) in a hole where two curled edges are connected, simultaneously further welding and reinforcing the curled edge connection part of the pedal plate and the T-shaped steel beam by utilizing an inclined stay rod (25), and finally inserting steel pull rods (23) along the groove (221) opening on the bottom surface of the wood chip block (22) (the number of the concrete steel pull rods (23) can be determined according to the actual plate size and the requirement), wherein each section of steel pull rods (23) can be connected by welding;
when the steel pull rod (23) is contacted with the ground, rivets can be used for reinforcement treatment, and when the steel pull rod (23) is contacted with the steel stair platform (1), welding is adopted to be connected with the platform beam (12), so that the replacement of the stair sections of each layer of stairs can be completed according to the method.
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