CN112761345A - Construction method and operation platform for shaped elevator shaft - Google Patents

Construction method and operation platform for shaped elevator shaft Download PDF

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Publication number
CN112761345A
CN112761345A CN202110242535.XA CN202110242535A CN112761345A CN 112761345 A CN112761345 A CN 112761345A CN 202110242535 A CN202110242535 A CN 202110242535A CN 112761345 A CN112761345 A CN 112761345A
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China
Prior art keywords
layer
lifting platform
lifting
elevator shaft
outer vertical
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CN202110242535.XA
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Chinese (zh)
Inventor
王廷征
秦丹丹
郭洪新
王宇
王黎明
蒋景泉
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China Construction Eighth Bureau Development and Construction Co Ltd
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China Construction Eighth Bureau Development and Construction Co Ltd
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Priority to CN202110242535.XA priority Critical patent/CN112761345A/en
Publication of CN112761345A publication Critical patent/CN112761345A/en
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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
    • E04G3/20—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by walls
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • 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
    • 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
    • E04G5/001—Safety or protective measures against falling down relating to scaffoldings
    • 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
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
    • 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
    • E04G5/06—Consoles; Brackets
    • E04G5/062—Consoles; Brackets specially adapted for attachment to building walls
    • 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
    • E04G5/10—Steps or ladders specially adapted for scaffolds
    • 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
    • E04G5/14—Railings
    • 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
    • E04G5/16—Struts or stiffening rods, e.g. diagonal rods

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

The invention provides a construction method and an operation platform of a standardized elevator shaft, belonging to the technical field of construction of elevator shafts and lifting platforms, the construction method of the standardized elevator shaft comprises the steps of building a lifting platform, building a foundation structure wall, hoisting the lifting platform into the elevator shaft and the like, S1, building the lifting platform: building a lifting platform outside a construction site in advance; s11, mounting expansion plates at two ends of the two channel steels, fixing a steel plate above the two channel steels by using fixing bolts, and fixing four limit supports above the steel plate; the invention can prevent the constructor from falling off carelessly by arranging the foot blocking plate, the middle vertical rod and the upper railing; moreover, the baffle plate can prevent the danger of falling objects, thereby ensuring the safety of constructors.

Description

Construction method and operation platform for shaped elevator shaft
Technical Field
The invention belongs to the technical field of construction of elevator shafts and lifting platforms, and particularly relates to a construction method and an operation platform of a shaped elevator shaft.
Background
Along with the rising of economy and the improvement of living standard of people, people put forward higher requirements on houses, and buildings of small high-rise buildings, high-rise buildings and super high-rise buildings are more and more, wherein vertical elevators are more and more. The construction scaffold of the elevator shaft in the building construction process is a great potential safety hazard in the construction of high-rise buildings.
However, in the conventional lifting platform, a landing scaffold is erected in a hoistway, and section steel is used for unloading after reaching a certain height, and in this way, although various safety measures are made, safety protection for constructors is not facilitated, and the lifting platform is not conducive to turnover, so that the operation time is increased, and the construction period is prolonged.
Disclosure of Invention
The embodiment of the invention provides a construction method and an operation platform for a stereotyped elevator shaft, and aims to solve the problems that a landing scaffold is erected in the shaft of the conventional lifting platform, and section steel is adopted for unloading after a certain height is reached.
In view of the above problems, the technical solution proposed by the present invention is:
the invention provides a construction method of a finalized elevator shaft, which comprises the following steps:
s1, building a lifting platform: building a lifting platform outside a construction site in advance;
s11, mounting expansion plates at two ends of the two channel steels, fixing a steel plate above the two channel steels by using fixing bolts, and fixing four limit supports above the steel plate;
s12, fixing steel rings on the four outer vertical rods, respectively inserting the four outer vertical rods into the four limiting supports, simultaneously fixing the outer vertical rods and the limiting supports by using fixing bolts, building a first layer of sweeping rods and a second layer of sweeping rods between the two transverse outer vertical rods, and fixing cross braces between the sweeping rods of the first layer and the second layer;
s13, paving a wood springboard on the floor sweeping rods and the cross rods of the first layer and the second layer, fixing a foot blocking plate on the periphery of the wood springboard close to the outer vertical rod, installing a baffle plate on the extension section of the floor sweeping rod, fixing the middle vertical rod and the upper handrail on the left side and the right side of the outer vertical rod respectively, and installing an escalator between the floor sweeping rods of the first layer and the second layer;
s14, a constructor climbs the second layer of the springboard along the staircase, and simultaneously constructs a structure consisting of a cross bar, a floor sweeping bar, the springboard, a foot blocking plate, a baffle plate, a cross brace, a middle upright bar and an upper railing of the third layer by using the construction mode of S12-S13, and the staircase is arranged between the second layer and the third layer;
s15, the constructor climbs the third layer of the springboard along the staircase and sequentially builds the upper layer structure by using the construction mode of S14;
s2, building a foundation structure wall: according to the requirements of drawings, a template of a first-layer structural wall is built in a construction area, limiting grooves are reserved on two corresponding side faces of the template, and meanwhile, the template of the first-layer structural wall is poured to form the first-layer structural wall, so that an elevator shaft is formed in the structural wall;
s3, hoisting the lifting platform into the elevator shaft: hoisting the lifting platform into the elevator shaft by using hoisting equipment, aligning the expansion plate with the limiting groove, inserting the expansion plate into the limiting groove by a constructor to enable the expansion plate to be in contact with the bottom surface of the limiting groove, and inserting a limiting clamping block into the limiting groove to fix the expansion plate in the limiting groove;
s4, building a second-layer structural wall, binding a steel bar beam on a foundation structural wall by a constructor on a lifting platform, arranging templates on two sides of the steel bar beam, fixing the bottom end of each template on the structural wall by using a fixing bolt, fastening the two templates by using a fastening bolt above the fixing bolt, mounting a first hook on each template, hanging a lifting hoist on the first hook, and simultaneously pouring concrete on the steel bar beam;
s5, lifting the lifting platform: hooking the second hook on the steel ring, stopping after slowly lifting the lifting platform by using the lifting block, removing the limiting clamping block by a constructor, contracting the telescopic plate to leave the limiting groove, continuously lifting the lifting block to enable the steel channel to be opposite to the limiting groove of the second-layer structure wall, and fastening the telescopic plate by using the construction mode of S3; in the limit groove of the second layer structure wall;
s6, sequentially building a structural wall: sequentially building the upper structural wall by using construction modes from S4 to S5;
s7, dismantling the construction platform: after the construction of the elevator shaft is completed, the lifting platform is dismantled according to the sequence of dismantling after the elevator shaft is firstly erected and dismantling before the elevator shaft is erected.
As a preferable technical scheme of the invention, the depth of the limiting groove is more than or equal to 300 mm.
As a preferred technical solution of the present invention, in the step S3, when the lifting platform is hoisted into the elevator shaft, the distance between the lifting platform and the structural wall is 300mm to 500 mm.
As a preferred technical solution of the present invention, when the wind load of the outer vertical rod is not considered, the stability calculation formula of the outer vertical rod is:
Figure BDA0002964160490000041
wherein, N-the axle center pressure design value of the outer vertical rod;
γ0-allowable slenderness ratio;
a-the net cross-sectional area of the outer vertical rod;
f, designing the compressive strength of the outer vertical rod of the steel pipe.
As a preferred technical solution of the present invention, when the outer vertical rod adopts a single tube, the lifting platform allows to set up a technical formula of height [ H ] regardless of wind load:
Figure BDA0002964160490000051
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the structural weight borne by each meter of outer upright;
Nxie-an axial force wire rope relief portion.
As a preferred technical solution of the present invention, when the wind load of the outer vertical rod is considered, the stability calculation formula of the outer vertical rod is as follows:
Figure BDA0002964160490000052
wherein, N-the axle center pressure design value of the outer vertical rod;
γ0-a structural importance coefficient;
a-the net cross-sectional area of the outer vertical rod;
f, designing the compressive strength of the outer vertical rod of the steel pipe;
Mw-calculating the bending moment of the outer mast section resulting from the design value of the wind load;
γ0-allowable slenderness ratio;
a-the net cross-sectional area of the outer vertical rod;
f, designing the compressive strength of the outer vertical rod of the steel pipe.
As a preferred technical solution of the present invention, when the outer vertical rod adopts a single tube, the lifting platform allows to set up a technical formula of height [ H ] regardless of wind load:
Figure BDA0002964160490000061
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the structural weight borne by each meter of outer upright;
Nxie-an axial force wire rope relief portion.
As a preferred technical solution of the present invention, when the wind load of the outer vertical rod is considered, the stability calculation formula of the outer vertical rod is as follows:
Figure BDA0002964160490000062
wherein, N-the axle center pressure design value of the outer vertical rod;
γ0-a structural importance coefficient;
a-the net cross-sectional area of the outer vertical rod;
f, designing the compressive strength of the outer vertical rod of the steel pipe;
Mw-calculating the bending moment of the outer mast section resulting from the design value of the wind load;
w-modulus of net section of outer vertical rod.
As a preferred technical solution of the present invention, when considering wind load, when the outer vertical rod adopts a single tube, the lifting platform allows to set up a technical formula of height [ H ]:
Figure BDA0002964160490000071
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the structural weight borne by each meter of outer upright;
Mwk-calculating the wind load standard value of the external vertical pole sectionThe resulting bending moment;
Nxie-an axial force wire rope relief portion;
Figure BDA0002964160490000072
the stability factor of the axially stressed outer upright.
In another aspect, the present invention provides an operating platform for sizing an elevator hoistway, comprising:
the structure wall is provided with a limiting groove in advance;
the lifting mechanism comprises a first hook, a lifting hoist and a second hook, the lifting hoist is hung on the first hook, the output end of the lifting hoist is connected with a lifting rope, and one end of the lifting rope is fixedly connected with the second hook;
the lifting platform comprises a channel steel, a steel plate, a limiting support, an outer vertical rod, a floor sweeping rod, a scissor support, a middle vertical rod, an upper railing and an escalator, expansion plates are inserted into two ends of the channel steel, the expansion plates are used for being supported inside the limiting grooves, a limiting clamping block is clamped between the expansion plates and the limiting grooves, the steel plate is fixedly connected above the channel steel, the limiting support is fixedly connected above the steel plate, the outer vertical rod is inserted into one end of the limiting support and fixed through a fixing bolt, the floor sweeping rod is fixedly connected between the transverse outer vertical rods, the scissor support is fixedly connected between the floor sweeping rods, a transverse rod is fixedly connected between the floor sweeping rods, a wood springboard is fixedly connected on the floor sweeping rod and the transverse rod, a foot blocking plate is fixedly connected around the wood springboard, and a baffle is fixedly connected on an extension section of the floor sweeping rod, the outer vertical rod is positioned between the floor sweeping rods, an upper handrail and a middle vertical rod are fixedly connected to one side of the floor sweeping rods from bottom to top, and an escalator is arranged between the floor sweeping rods.
According to a preferable technical scheme, a steel bar beam is arranged above the structural wall, formworks are arranged on two sides of the steel bar beam, the two formworks are fixedly connected through fastening bolts, and the first hook is fixedly connected to one side of one formwork.
As a preferred technical scheme of the invention, a steel ring is fixedly connected to the surface of the outer vertical rod, and the steel ring is hooked by the second hook, so that the lifting hoist can lift the lifting platform.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts different construction schemes, thereby ensuring the safety of constructors; meanwhile, the lifting platform is applied in a modularized manner, so that the lifting platform is convenient to mount and dismount, the turnover of the lifting platform is facilitated, the labor cost is reduced, and the working efficiency is improved.
(2) The invention can prevent the constructor from falling off carelessly by arranging the foot blocking plate, the middle vertical rod and the upper railing; moreover, the baffle plate can prevent the danger of falling objects, thereby ensuring the safety of constructors.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic flow chart of a construction method for sizing an elevator shaft according to the present invention;
fig. 2 is a flowchart of step S2 of the method for constructing a standardized elevator shaft according to the present invention;
fig. 3 is a schematic structural view of an operating platform for sizing an elevator hoistway according to the present disclosure;
fig. 4 is a top view of an operating platform for sizing an elevator hoistway as disclosed herein;
fig. 5 is a sectional view at a-a of fig. 3.
Description of reference numerals: 10-structural wall, 11-limiting groove, 12-limiting clamping block, 20-reinforcing steel beam, 21-template, 22-fastening bolt, 30-lifting mechanism, 31-first hook, 32-lifting block, 33-second hook, 40-lifting platform, 41-channel steel, 411-expansion plate, 42-steel plate, 43-limiting support, 44-outer vertical rod, 441-cross rod, 442-steel ring, 45-floor sweeping rod, 451-wood springboard, 452-baseboard, 453-baffle, 46-shear support, 47-middle vertical rod, 48-upper railing, 49-staircase.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the referenced apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example one
Referring to the attached drawings 1-2, the invention provides a technical scheme: a construction method for a standardized elevator shaft comprises the following steps:
s1, the lifting platform 40 is set up: a lifting platform 40 is set up in advance outside the construction site.
In S11, the expansion plates 411 are attached to both ends of the two channel bars 41, the steel plate 42 is fixed above the two channel bars 41 using fixing bolts, and the four stopper stays 43 are fixed above the steel plate 42.
And S12, fixing steel rings 442 on the four outer vertical rods 44, respectively inserting the four outer vertical rods 44 into the four limit supports 43, fixing the outer vertical rods 44 and the limit supports 43 by using fixing bolts, building sweeping rods 45 and cross rods 441 on a first layer and a second layer between the two transverse outer vertical rods 44, and fixing cross braces 46 between the sweeping rods 45 on the first layer and the second layer.
Particularly, when the outer vertical rods 44 are built, the top ends of the four outer vertical rods 44 and the ground mounting support rods are used for keeping the stability of vertical support of the four outer vertical rods 44 through the action of the support rods, and safety accidents caused by toppling over are avoided.
S13, paving a wooden gangboard 451 on the sweeping rods 45 and the cross bar 441 of the first and second floors, fixing a foot blocking plate 452 on the wooden gangboard 451 near the periphery of the outer upright 44, installing a blocking plate 453 on the extension section of the sweeping rod 45, fixing the middle upright 47 and the upper rail 48 on the left and right sides of the outer upright 44, respectively, and installing an escalator 49 between the sweeping rods 45 of the first and second floors.
S14, the constructor climbs the second layer of the wooden springboard 451 along the staircase 49, and simultaneously builds the composition structure of the cross bar 441, the sweeping rod 45, the wooden springboard 451, the foot blocking plate 452, the blocking plate 453, the cross brace 46, the middle rod 47 and the upper railing 48 of the third layer by using the construction mode of S12-S13, and the staircase 49 is arranged between the second layer and the third layer.
S15, the constructor climbs the third floor of the ramp 451 along the staircase 49, and builds the upper floor structure in turn by the construction method of S14.
Specifically, after the lifting platform 40 is built, the constructor checks the stability of the whole lifting platform 40 to ensure the safety of the personnel in the construction process.
S2, the foundation structure wall 10 is constructed: according to the drawing requirements, a template 21 of the first-layer structural wall 10 is built in a construction area, limiting grooves 11 are reserved on two corresponding side faces of the template 21, and meanwhile the first-layer structural wall 10 is formed by pouring in the template 21 of the first-layer structural wall 10, so that an elevator shaft is formed in the structural wall 10.
Specifically, the depth of the limiting groove 11 is greater than or equal to 300mm, so that a sufficient space for inserting the expansion plate 411 into the limiting groove 11 can be ensured, and the stability of the lifting platform 40 can be ensured.
S3, hoisting the lift platform 40 into the elevator shaft: hoisting equipment is used for hoisting the lifting platform 40 into the elevator shaft, the expansion plate 411 is aligned to the limiting groove 11, a constructor inserts the expansion plate 411 into the limiting groove 11 to enable the expansion plate 411 to be in contact with the bottom surface of the limiting groove 11, and inserts the limiting fixture block 12 into the limiting groove 11 to fix the expansion plate 411 in the limiting groove 11.
Specifically, the distance between the lifting platform 40 and the structural wall 10 is 300-500 mm when the lifting platform 40 is lifted into the elevator shaft; allowing sufficient space for the lift platform 40 to avoid the lift platform 40 from hitting the structural wall 10.
S4, building the second-storey structural wall 10, binding the reinforcing steel bar beam 20 on the foundation structural wall 10 on the lifting platform 40 by the constructor, setting the formworks 21 on both sides of the reinforcing steel bar beam 20, fixing the bottom ends of the formworks 21 on the structural wall 10 by using the fixing bolts, fastening the two formworks 21 by using the fastening bolts 22 above the fixing bolts, installing the first hooks 31 on the formworks 21, hanging the lifting hoists 32 on the first hooks 31, and simultaneously performing concrete casting on the reinforcing steel bar beam 20.
S5, the lifting platform 40 is lifted: hooking the second hook 33 on the steel ring 442, slowly lifting the lifting platform 40 by using the lifting hoist 32, and then stopping, removing the limiting fixture block 12 by a constructor, and retracting the telescopic plate 411 away from the limiting groove 11, wherein the lifting hoist 32 is continuously lifted to enable the channel steel 41 to be opposite to the limiting groove 11 of the second-layer structure wall 10, and fastening the telescopic plate 411 by using the construction mode of S3; in the limiting groove 11 of the second layer structure wall 10.
S6, the structural wall 10 is built up in sequence: the upper structural wall 10 is constructed in sequence by the construction method of S4 to S5.
S7, dismantling the construction platform: after the completion of the construction of the elevator shaft, the lifting platform 40 is removed in the order of the first removal of the first elevator shaft and the first removal of the second elevator shaft.
In the embodiment of the present invention, when the outer vertical rod 44 does not consider the wind load, the stability calculation formula of the outer vertical rod 44 is:
Figure BDA0002964160490000151
wherein, N-the axle center pressure design value of the outer vertical rod 44;
γ0-allowable slenderness ratio;
a-the net cross-sectional area of the outer upright 44;
f-design value of compressive strength of the outer vertical rod 44 of the steel pipe.
In the embodiment of the present invention, when the outer vertical rod 44 is a single pipe, the lifting platform 40 allows to build the technical formula of height [ H ] regardless of the wind load:
Figure BDA0002964160490000152
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-per meterThe standard value of the structural weight borne by the outer vertical rod 44;
Nxie-an axial force wire rope relief portion.
In the embodiment of the present invention, when the outer vertical rod 44 considers the wind load, the stability calculation formula of the outer vertical rod 44 is:
Figure BDA0002964160490000153
wherein, N-the axle center pressure design value of the outer vertical rod 44;
γ0-a structural importance coefficient;
a-the net cross-sectional area of the outer upright 44;
f, designing the compressive strength of the outer vertical rod 44 of the steel pipe;
Mwcalculating the bending moment of the section of the outer upright 44 resulting from the design value of the wind load;
w-modulus of the outer upright 44 net section.
In the embodiment of the present invention, the lifting platform 40 allows to build a technical formula of height [ H ] when the outer vertical rod 44 adopts a single tube when considering wind load:
Figure BDA0002964160490000161
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the weight of the structure borne by the outer uprights 44 per metre;
Mwkcalculating the bending moment of the outer vertical rod 44 section caused by the standard value of the wind load;
Nxie-an axial force wire rope relief portion;
Figure BDA0002964160490000162
the coefficient of stability of the axially stressed outer upright 44.
Example two
Referring to fig. 3-5, an operating platform for a shaped elevator hoistway includes a structural wall 10, a lifting mechanism 30, and a lifting platform 40;
referring to fig. 3, a limiting groove 11 is reserved on a structural wall 10, a lifting mechanism 30 includes a first hook 31, a lifting block 32 and a second hook 33, the lifting block 32 is hung on the first hook 31, the output end of the lifting block 32 is connected with a lifting rope, and one end of the lifting rope is fixedly connected with the second hook 33;
referring to fig. 3 to 5, the lifting platform 40 includes a channel steel 41, a steel plate 42, a limiting support 43, an outer vertical rod 44, a sweeping rod 45, a scissor support 46, a middle vertical rod 47, an upper handrail 48 and an escalator 49, wherein two ends of the channel steel 41 are respectively inserted with a telescopic plate 411, the telescopic plates 411 are used for supporting inside of the limiting groove 11, a limiting fixture block 12 is clamped between the telescopic plates 411 and the limiting groove 11, the steel plate 42 is fixedly connected above the channel steel 41, the limiting support 43 is fixedly connected above the steel plate 42, the outer vertical rod 44 is inserted at one end of the limiting support 43 and fixed by a fixing bolt, the sweeping rods 45 are fixedly connected between the transverse outer vertical rods 44, the scissor support 46 is fixedly connected between the sweeping rods 45, a cross rod 441 is fixedly connected between the sweeping rods 45, a wooden springboard 451 is fixedly connected on the sweeping rods 45 and the cross rod 441, a foot blocking plate 452 is fixedly connected around the wooden springboard, the extension section of the sweeping rods 45 is fixedly connected with a baffle 453, the outer upright rods 44 are positioned between the sweeping rods 45, one side of the outer upright rods from bottom to top is fixedly connected with an upper railing 48 and a middle upright rod 47, and escalators 49 are arranged between the sweeping rods 45.
In the present embodiment, by providing the foot blocking plate 452, the middle upright rod 47 and the upper rail 48, the builder can be prevented from falling off carelessly; further, the safety of the constructor can be ensured by preventing the risk of falling objects by providing the dam 453.
In the embodiment of the present invention, a reinforcing bar beam 20 is disposed above the structural wall 10, formworks 21 are disposed on both sides of the reinforcing bar beam 20, the two formworks 21 are fixedly connected by fastening bolts 22, and a first hook 31 is fixedly connected to one side of one of the formworks 21.
In the embodiment of the present invention, a steel ring 442 is fixedly connected to the surface of the outer vertical rod 44, and the steel ring 442 is hooked by the second hook 33, so that the lifting block 32 lifts the lifting platform 40.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
(1) the invention adopts different construction schemes, thereby ensuring the safety of constructors; meanwhile, the lifting platform is applied in a modularized manner, so that the lifting platform is convenient to mount and dismount, the turnover of the lifting platform is facilitated, the labor cost is reduced, and the working efficiency is improved.
(2) The invention can prevent the constructor from falling off carelessly by arranging the foot blocking plate, the middle vertical rod and the upper railing; moreover, the baffle plate can prevent the danger of falling objects, thereby ensuring the safety of constructors.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A construction method for a shaped elevator shaft is characterized by comprising the following steps:
s1, building a lifting platform (40): a lifting platform (40) is set up in advance outside a construction site;
s11, mounting expansion plates (411) at two ends of two channel steels (41), fixing a steel plate (42) above the two channel steels (41) by using fixing bolts, and fixing four limit supports (43) above the steel plate (42);
s12, steel rings (442) are fixed on the four outer vertical rods (44), the four outer vertical rods (44) are respectively inserted into the four limiting supports (43), the outer vertical rods (44) and the limiting supports (43) are fixed by using fixing bolts, sweeping rods (45) and cross rods (441) of a first layer and a second layer are built between the two transverse outer vertical rods (44), and scissor supports (46) are fixed between the sweeping rods (45) of the first layer and the second layer;
s13, paving a wooden springboard (451) on the sweeping rods (45) and the cross rods (441) of the first layer and the second layer, fixing foot blocking plates (452) on the peripheries of the wooden springboard (451) close to the outer vertical rods (44), installing baffles (453) on the extension sections of the sweeping rods (45), fixing the middle vertical rods (47) and the upper railings (48) on the left side and the right side of the outer vertical rods (44), and installing an escalator (49) between the sweeping rods (45) of the first layer and the second layer;
s14, a constructor climbs the second-layer wood gangway (451) along the staircase (49), and simultaneously constructs a composition structure of a cross bar (441), a sweeping rod (45), the wood gangway (451), a foot blocking plate (452), a baffle (453), a cross brace (46), a middle vertical rod (47) and an upper railing (48) of the third layer by using the construction mode of S12-S13, and the staircase (49) is arranged between the second layer and the third layer;
s15, a constructor climbs a third-layer springboard (451) along the escalator (49) and sequentially builds the upper-layer structure by using the construction mode of S14;
s2, building the foundation structure wall (10): according to the drawing requirements, a template (21) of a first-layer structural wall (10) is built in a construction area, limiting grooves (11) are reserved on two corresponding side faces of the template (21), and meanwhile pouring is carried out in the template (21) of the first-layer structural wall (10) to form the first-layer structural wall (10), so that an elevator shaft is formed in the structural wall (10);
s3, hoisting the lifting platform (40) into the elevator shaft: hoisting a lifting platform (40) into the elevator shaft by using hoisting equipment, aligning the expansion plate (411) with the limiting groove (11), inserting the expansion plate (411) into the limiting groove (11) by a constructor to enable the expansion plate (411) to be in contact with the bottom surface of the limiting groove (11), and inserting a limiting clamping block (12) into the limiting groove (11) to fix the expansion plate (411) in the limiting groove (11);
s4, building a second-layer structural wall (10), wherein a constructor is positioned on a lifting platform (40) and binds a reinforcing steel beam (20) on the foundation structural wall (10), templates (21) are arranged on two sides of the reinforcing steel beam (20), the bottom ends of the templates (21) are fixed on the structural wall (10) through fixing bolts, two templates (21) are fastened above the fixing bolts through fastening bolts (22), a first hook (31) is arranged on each template (21), a lifting hoist (32) is hung on the first hook (31), and concrete is poured on the reinforcing steel beam (20);
s5, lifting the lifting platform (40): the second hook (33) is hooked on the steel ring (442), the lifting platform (40) is slowly lifted by the lifting hoist (32) and then stopped, the constructor removes the limiting clamping block (12), the telescopic plate (411) is contracted away from the limiting groove (11), the lifting hoist (32) is continuously lifted at the moment to enable the channel steel (41) to be opposite to the limiting groove (11) of the second-layer structure wall (10), and the telescopic plate (411) is fastened by the construction mode of S3; in the limit groove (11) of the second layer of structure wall (10);
s6, sequentially building the structural wall (10): sequentially building the upper-layer structural wall (10) by using construction modes from S4 to S5;
s7, dismantling the construction platform: after the construction of the elevator shaft is completed, the lifting platform (40) is dismantled according to the sequence of dismantling after the first erection and dismantling before the second erection.
2. The construction method for sizing the elevator shaft according to claim 1, wherein the depth of the limiting groove (11) is greater than or equal to 300 mm.
3. The construction method of a finalized elevator shaft as claimed in claim 1, wherein the distance between the lifting platform (40) and the structural wall (10) when the lifting platform (40) is hoisted into the elevator shaft in step S3 is in the range of 300 mm-500 mm.
4. The method of claim 1, wherein the stability of the outer vertical rod (44) is calculated by the following formula when the outer vertical rod (44) does not consider wind load:
Figure FDA0002964160480000041
wherein, N-the axle center pressure design value of the outer vertical rod (44);
γ0-allowable slenderness ratio;
a-the net cross-sectional area of the outer upright (44);
f-design value of compressive strength of the outer vertical rod (44) of the steel pipe.
5. A method of constructing a modular elevator shaft according to claim 4, characterized in that the lifting platform (40) allows to build the technical formula of height [ H ] when the outer uprights (44) adopt a single tube, irrespective of the wind load:
Figure FDA0002964160480000042
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the dead weight of the structure borne by each meter of outer uprights (44);
Nxie-an axial force wire rope relief portion.
6. The construction method for sizing the elevator shaft according to claim 1, wherein the stability calculation formula of the outer vertical rod (44) when the wind load is considered is as follows:
Figure FDA0002964160480000051
wherein, N-the axle center pressure design value of the outer vertical rod (44);
γ0-a structural importance coefficient;
a-the net cross-sectional area of the outer upright (44);
f-design value of compressive strength of the outer vertical rod (44) of the steel pipe;
Mw-calculating the bending moment of the outer vertical rod (44) section resulting from the design value of the wind load;
w-the net section modulus of the outer upright (44).
7. A method of constructing a modular elevator shaft according to claim 6, characterized in that the lifting platform (40) allows the formula of the height [ H ] to be established when the outer vertical rod (44) is a single tube, taking into account the wind load:
Figure FDA0002964160480000052
wherein N isG2K-axial forces resulting from the standard values of the weight of the component;
NQK-live load standard value;
gk-standard value of the dead weight of the structure borne by each meter of outer uprights (44);
Mwk-calculating the bending moment of the outer vertical pole (44) section resulting from the standard value of the wind load;
Nxie-an axial force wire rope relief portion;
Figure FDA0002964160480000061
-the stability factor of the axially stressed outer upright (44).
8. An operation platform of a standardized elevator shaft is applied to the construction method of the standardized elevator shaft according to any one of claims 1 to 7, and is characterized by comprising the following steps:
the structure wall (10) is provided with a limiting groove (11) in advance;
the lifting mechanism (30) comprises a first hook (31), a lifting hoist (32) and a second hook (33), the lifting hoist (32) is hung on the first hook (31), the output end of the lifting hoist (32) is connected with a lifting rope, and one end of the lifting rope is fixedly connected with the second hook (33);
lifting platform (40), lifting platform (40) includes channel-section steel (41), steel sheet (42), spacing support (43), outer pole setting (44), pole (45) of sweeping the floor, bridging (46), well pole (47), go up railing (48) and staircase (49), the both ends of channel-section steel (41) are all pegged graft and are had expansion plate (411), expansion plate (411) be used for supporting in the inside of spacing groove (11), expansion plate (411) with spacing fixture block (12) are connected to the joint between spacing groove (11), the top fixedly connected with of channel-section steel (41) steel sheet (42), the top fixedly connected with of steel sheet (42) spacing support (43), outer pole setting (44) peg graft in the one end of spacing support (43) is fixed through fixing bolt, and is horizontal fixedly connected with between outer pole setting (44) sweep pole (45), sweep fixedly connected with bridging (46) between ground pole (45), fixedly connected with horizontal pole (441) between ground pole (45), sweep ground pole (45) with fixedly connected with wooden springboard (451) on horizontal pole (441), fixedly connected with fender foot board (452) all around of wooden springboard (451), the extension fixedly connected with baffle (453) of sweeping ground pole (45), outer pole setting (44) are located and sweep between ground pole (45) one side fixedly connected with from bottom to top and go up railing (48) and well pole setting (47), be provided with staircase (49) between ground pole (45).
9. An operating platform of a finalized elevator shaft as claimed in claim 8, wherein a steel bar beam (20) is disposed above said structural wall (10), a formwork (21) is disposed on each side of said steel bar beam (20), and said two formworks (21) are fixedly connected by fastening bolts (22), and said first hook (31) is fixedly connected to one side of one of said formworks (21).
10. An operating platform of a finalized elevator hoistway as claimed in claim 8, characterized in that a steel ring (442) is fixedly connected to the surface of said outer vertical rod (44), said steel ring (442) being used for hooking the second hook (33) so that said lifting block (32) lifts the lifting platform (40).
CN202110242535.XA 2021-03-05 2021-03-05 Construction method and operation platform for shaped elevator shaft Pending CN112761345A (en)

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