CN111893881B - Three-dimensional rapid construction method using conversion platform - Google Patents

Three-dimensional rapid construction method using conversion platform Download PDF

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Publication number
CN111893881B
CN111893881B CN202010587587.6A CN202010587587A CN111893881B CN 111893881 B CN111893881 B CN 111893881B CN 202010587587 A CN202010587587 A CN 202010587587A CN 111893881 B CN111893881 B CN 111893881B
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conversion
steel
steel frame
platform
construction
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CN111893881A (en
Inventor
连珍
葛倩华
江旖旎
朱彤
李佳
林刚
赵志强
崔杰
王晟
张雨
朱家佳
周漪芳
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Shanghai Building Decoration Engineering Group Co Ltd
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Shanghai Building Decoration Engineering Group Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Abstract

The invention relates to a three-dimensional rapid construction method utilizing a conversion platform, which is characterized in that before upper layers such as hydropower, air channels, fire pipelines and the like in a suspended ceiling area are constructed, a conversion layer is installed in the suspended ceiling area in a full area, and a springboard is carried in an area needing to be operated at the upper end of the conversion construction platform to form the conversion construction platform; and the constructors of the hydropower, the air duct and the fire-fighting pipeline in the suspended ceiling area enter the conversion construction platform to mount the hydropower, the air duct, the fire-fighting pipeline and the like, and synchronously construct suspended ceilings below the conversion construction platform. The invention forms the conversion platform by utilizing the assembled conversion layer structure, the upper layer and the lower layer of the conversion platform are synchronously constructed in a layered manner, the cross influence can not be generated between the upper layer and the lower layer of the conversion platform, the conversion layer structure is not required to be dismantled, a large number of dismantling procedures are omitted, and the construction period is greatly shortened.

Description

Three-dimensional rapid construction method using conversion platform
Technical Field
The invention relates to the technical field of building construction, in particular to a three-dimensional rapid construction method using a conversion platform.
Background
In the building construction process, certain cross exists between specialized constructions such as civil engineering, installation, steel structures, curtain walls, weak current, fire protection and the like, the whole construction can be saved through large-flow construction, the large-flow cross operation can have a plurality of coordination works, and coordination among all departments and construction of different departments can be influenced. Due to the limit of engineering construction period, the workload is large, the cross operation between the decoration department and the installation department is more, the installation water, electricity, wind and fire pipelines are concentrated in the large-space suspended ceiling area, the elevation from the suspended ceiling finishing surface to the structure is basically 3-4m, and the decoration suspended ceiling is required to be provided with a reverse support or conversion layer.
In order to fully utilize the construction period, the construction operation of each department strives for the respective working face to the greatest extent, and how to fully utilize the working face strives for the maximized saving time is one of the centers of gravity of the current rapid construction technology research.
Disclosure of Invention
In order to achieve the technical purpose, the invention provides a three-dimensional rapid construction method by using a conversion platform so as to improve the working efficiency, and the technical purpose of the invention is realized by the following technical scheme:
a three-dimensional rapid construction method utilizing a conversion platform is characterized in that before upper layers such as hydropower, air channels and fire-fighting pipelines in a suspended ceiling area are constructed, a conversion layer is installed in the suspended ceiling area in a full area, and a gangway is carried on an operation area at the upper end of the conversion construction platform to form the conversion construction platform; and the constructors of the hydropower, the air duct and the fire-fighting pipeline in the suspended ceiling area enter the conversion construction platform to mount the hydropower, the air duct, the fire-fighting pipeline and the like, and synchronously construct suspended ceilings below the conversion construction platform.
Further, the conversion layer installation includes the steps of:
step 1, calculating the stress of a steel beam in a suspended ceiling area before installation of a conversion layer;
step 2, processing a steel beam, and arranging an angle steel embedded part at the bottom of the steel beam;
and 3, installing a steel beam, and installing a conversion layer below the steel beam.
Further, the conversion layer comprises a longitudinal steel frame and a transverse steel frame, the longitudinal steel frame and the transverse steel frame are fixedly connected in a cross welding mode, a vertical steel frame is arranged between the conversion layer and the steel beam, one end of the vertical steel frame is connected with the embedded part, and the other end of the vertical steel frame is connected with the conversion layer.
Further, the vertical steel frames are connected with the angle steel embedded parts and the vertical steel frames are connected with the conversion layer through bolts.
Further, before the construction of the upper layer, it is necessary to determine whether the weight of the upper layer constructor accords with the load of the conversion layer and the load of the steel beam.
Further, in the step 2, a plurality of angle steel embedded parts are welded at the bottom of the steel beam, and the angle steel embedded parts are symmetrically distributed at two ends of the center line of the steel beam.
Further, the distance between embedded parts in the middle of the steel beam is not more than 3000mm, and the distance between the embedded parts at the two ends of the steel beam and the two ends of the steel beam is not more than 500mm.
Further, the upper end of the vertical steel frame is fixedly connected with the angle steel embedded part, and then the lower end of the vertical steel frame is fixedly connected with the longitudinal steel frame, and the vertical steel frame is perpendicular to the longitudinal steel frame; and finally, installing and fixing the transverse steel frame on the longitudinal steel frame, wherein the transverse steel frame is perpendicular to the longitudinal transverse frame.
The invention has the advantages that the assembled conversion layer structure and the springboard are carried to form the conversion platform, the upper layer and the lower layer of the conversion platform are synchronously constructed in a layered manner, the cross influence is not generated between the conversion platform and the lower layer, the conversion layer structure is not required to be dismantled, a large number of dismantling procedures are omitted, and the construction period is greatly shortened; in addition, the gangway can be used as an overhaul horse road by mounting the gangway on the conversion layer.
Drawings
Fig. 1 is a schematic diagram of a conversion layer structure in the present invention.
Fig. 2 is a plan view of a conversion layer in the present invention.
In the figure, 1, a steel beam; 2. vertical steel frame; 3. a longitudinal steel frame; 4. a transverse steel frame; 5. hanging ribs; 6. installing a keel on the aluminum ceiling; 7. an angle steel embedded part; 8. and (5) burying a plate.
Detailed Description
The technical scheme of the invention is further described below with reference to the specific embodiments:
in order to ensure a construction period target, a conversion layer is fully built below a steel beam, a springboard is mounted on the conversion layer to form a conversion construction platform, as shown in fig. 1 and 2, the springboard is mounted in a construction area of the conversion layer, the position of the springboard is changed according to the change of the construction area to form an upper-layer operation space and a lower-layer operation space of the conversion construction platform, the upper layer is used for normal construction of pipeline installation, structure fire prevention and black spraying work, and the lower layer is used for installing an aluminum ceiling installation keel 6 and ceiling construction; and after finishing, the springboard is taken down, and the conversion layer is finally used as a suspended ceiling conversion layer to be permanently stored and is not removed.
Before the conversion layer is installed, the stress of the steel beam 1 is calculated, the steel beam 1 is finally used as the structural support of the conversion construction platform, and the corresponding strength and rigidity must be met:
load value
(1) The construction and maintenance load is 1.0kN/m (one each meter range is respectively taken when the beam is calculated);
(2) Suspended ceiling load (dead weight of steel-containing structure conversion layer) 0.3kN/m 2 。
(second) Beam calculation (No. 3 steel Q235)
(1) The span is 3.0m horizontally placed, the distance is 1.2m, the concentrated load is 1.0KN (three), and the deflection is allowed to be 20mm;
(2) Bending moment m=0.3×1.2×1.2×3 2 /8+1.0*1.4*3/4+1.0*1.4*0.5＝2.24kNm；
(3) Support reaction v=0.3×1.2×1.2×3/2+1.0×1.4×3/2=2.75 kN;
(4) And (3) checking intensity: wx=2.24×10 is required 6 /215＝10.4*10 3 mm 3 ＝10.4cm 3 Checking deflection;
(5) Jx= (5×0.3×1.2×3 4 *10 12 +14.8*1.0*3 3 *10 12 )/(384*2.06*10 5 *20.0)＝34.5*10 4 mm 4 ＝34.5cm 4 ；
(6) Optional l75×505 (wx=14.7)>10.4cm 3 ，Jx＝35.1>34.5cm 4 )。
And (III) calculating a main beam (selecting No. 3 steel Q235)
(1) The span is 3.0m horizontally placed, the interval is 3.0m, the concentrated load is 1.0KN (three), and the deflection is allowed to be 20mm;
(2) Bending moment m=0.3×3×1.2×3 2 /8+1.0*1.4*3/4+1.0*1.4*0.5＝2.97kNm；
(3) Support reaction v=0.3×3×1.2×3/2+1.0×1.4×3/2=3.72 kN;
(4) And (3) checking intensity: wx=2.97×10 is required 6 /215＝13.8*10 3 mm 3 ＝13.8cm 3 ；
(5) Deflection checking:
Jx＝(5*0.3*3*3 4 *10 12 +14.8*1.0*3 3 *10 12 )/(384*2.06*10 5 *20.0)＝48.3*10 4 mm 4 ＝48.3cm 4 ；
(6) Optional 2l75×505 (wx=29.4>13.8cm 3 ，Jx＝70.2>48.3cm 4 )。
Boom checking boom calculation (No. 3 steel Q235)
(1) Calculating a length of 2.0m, a spacing of 3 x 3m, and a boom tension of n=3.72knx2=7.44 kN;
(2) And (3) checking intensity: required cross-sectional area a=7.44×10 3 /(0.85*215)＝40.7mm 2 ；
(3) And (3) checking and calculating a slenderness ratio: a radius gyration value i=2000/200=10mm is required;
(4) Optional l50×5 (a=480)>40.7mm 2 ，i＝15.3>10mm)。
(fifth) weld calculation (three-stage fillet weld is selected)
V=n=7.44 KN, requiring a weld length l=7440/(4×160) =11.6 mm.
Conclusion: the total length of the welding line is not less than 30 mm.
Screw calculation (common C-level screw, no. 3 steel Q235)
(1) Single shear, shear strength 130N/mm 2 ；
(2) The relation between the diameter and the number of the bolts is needed: n pi d 2 /4=7440/130, i.e.: nd 2 ＝72.9mm 2 ；
(3) The bolts can be selected from 2M8 (nd) 2 ＝128>72.9mm 2 ) Or 2M10 (nd) 2 ＝200>72.9mm 2 ) Finally, considering the safety factor, 2M10 bolt connection is adopted.
When the steel beam is processed, angle steel embedded parts 7 are arranged at the bottom of the steel beam 1, the angle steel embedded parts 7 are symmetrically distributed at two ends of the central line of the steel beam 1, the distance between two adjacent angle steel embedded parts 7 at the middle part of the steel beam 1 is not more than 3000mm, the distance between the two angle steel embedded parts 7 at the two ends of the steel beam 1 and the two ends of the steel beam is not more than 500mm, taking a 10m long steel beam as an example, at least 4 angle steel embedded parts are arranged, the distance between two adjacent angle steel embedded parts is 3000mm, and the distance between the two angle steel embedded parts at the outermost end and the end of the steel beam is 500mm; taking a steel beam with the length of 11m as an example, at least 6 angle iron embedded parts are sequentially arranged from one end of the steel beam to the other end of the steel beam, the distance between the first angle iron embedded part and the sixth angle iron embedded part and the two ends of the steel beam is 500mm, the distance between the first angle iron embedded part and the second angle iron embedded part and the distance between the fifth angle iron embedded part and the sixth angle iron embedded part are 500mm, and the distance between the second angle iron embedded part and two adjacent angle iron embedded parts in the bottom five angle iron embedded parts is 3000mm.
The angle steel embedded part 7 comprises two mutually perpendicular steel plates, one steel plate is welded at the bottom of the steel beam 1 in a horizontal mode, one steel plate is arranged vertically, a transverse waist hole is formed in the steel plate in the vertical mode, the edge of the waist hole is not smaller than 15mm away from the edge of the steel plate, the angle steel embedded part 7 is welded and fixed at the bottom of the steel beam 1, and then rust-proof paint is integrally coated on the steel beam 1 and the angle steel embedded part 7.
The steel beam 1 is arranged at the top of a suspended ceiling area, a conversion layer is assembled under the steel beam 1 in a full area, when the conversion layer is arranged, a buried plate 8 is welded and fixed at the upper end and the lower end of a vertical steel frame 2 respectively, the buried plate 8 is a galvanized steel plate with waist round holes, the waist round holes are used for penetrating bolts, the buried plate 8 at the upper end of the vertical steel frame 2 is fixedly connected with an angle steel embedded part 7 through bolts, the buried plate 8 at the lower end of the vertical steel frame 2 is fixedly connected with a longitudinal steel frame 3 through bolts, and the vertical steel frame 2 is perpendicular to the longitudinal steel frame 3; and finally, the transverse steel frame 4 is fixedly arranged on the longitudinal steel frame 3 through bolts, and the transverse steel frame 4 is perpendicular to the longitudinal transverse frame 3.
When in construction, 2-3 aluminum gangboards are carried on the upper end of the conversion layer, upper layer operators carry out construction such as upper layer hydropower, air channels and fire pipelines on the aluminum gangboards through ladders, the positions of the aluminum gangboards are adjusted according to the position change of the upper layer operation, the aluminum ceiling installation keels 6 can be installed and suspended in the lower side of the conversion construction platform, the aluminum ceiling installation keels 6 are installed below the conversion construction platform through hanging ribs 5, the construction period is fully utilized by building three-dimensional construction space, the later conversion layer is not required to be removed, and the construction period is saved.
The present embodiment is further illustrative of the present invention and is not to be construed as limiting the invention, and those skilled in the art can make no inventive modifications to the present embodiment as required after reading the present specification, but only as long as they are within the scope of the claims of the present invention.

Claims (5)

1. A three-dimensional rapid construction method using a conversion platform is characterized in that before upper construction of hydropower, air channels and fire-fighting pipelines in a suspended ceiling area, a conversion layer is installed in the suspended ceiling area in a full-area mode, and a springboard is carried in an area where the upper end of the conversion construction platform needs to be operated to form the conversion construction platform; the constructors of the hydropower, the air duct and the fire-fighting pipeline in the suspended ceiling area enter a conversion construction platform to mount the hydropower, the air duct and the fire-fighting pipeline, and synchronously construct suspended ceilings below the conversion construction platform; before the upper layer construction, determining whether the weight of an upper layer constructor accords with the load of a conversion layer and the load of a steel beam; the conversion layer installation comprises the following steps:
step 1, calculating the stress of a steel beam in a suspended ceiling area before installation of a conversion layer;
step 2, processing a steel beam, and arranging an angle steel embedded part at the bottom of the steel beam;
step 3, installing a steel beam, and installing a conversion layer below the steel beam; the conversion layer comprises a longitudinal steel frame and a transverse steel frame, the longitudinal steel frame and the transverse steel frame are fixedly connected in a cross welding mode, a vertical steel frame is arranged between the conversion layer and the steel beam, one end of the vertical steel frame is connected with the embedded part, and the other end of the vertical steel frame is connected with the conversion layer.
2. The method for three-dimensional rapid construction by using a conversion platform according to claim 1, wherein the vertical steel frame and the angle steel embedded part are connected through bolts, and the vertical steel frame and the conversion layer are connected through bolts.
3. The method for three-dimensional rapid construction using a conversion platform according to claim 1, wherein in the step 2, a plurality of angle steel embedded parts are welded at the bottom of the steel beam, and the angle steel embedded parts are symmetrically distributed at two ends of the center line of the steel beam.
4. The three-dimensional rapid construction method using a conversion platform according to claim 3, wherein the distance between embedded parts in the middle of the steel beam is not more than 3000mm, and the distance between the embedded parts at two ends of the steel beam and two ends of the steel beam is not more than 500mm.
5. The three-dimensional rapid construction method using a conversion platform according to claim 1, wherein the upper end of the vertical steel frame is fixedly connected with the angle steel embedded part, and then the lower end of the vertical steel frame is fixedly connected with the longitudinal steel frame, wherein the vertical steel frame is perpendicular to the longitudinal steel frame; and finally, installing and fixing the transverse steel frame on the longitudinal steel frame, wherein the transverse steel frame is perpendicular to the longitudinal transverse frame.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575892A (en) * 2009-03-26 2009-11-11 北京市建筑工程装饰有限公司 Large-area lower edge nested aluminum plate curved hung ceiling with high punching rate and construction method thereof
CN103590529A (en) * 2013-10-23 2014-02-19 苏州金螳螂建筑装饰股份有限公司 Super-large space cured-surface iron suspended ceiling
CN107816161A (en) * 2017-10-31 2018-03-20 苏州金螳螂建筑装饰股份有限公司 A kind of furred ceiling assembled type steel frame conversion layer
CN108265872A (en) * 2018-01-26 2018-07-10 中建八局装饰工程有限公司 A kind of furred ceiling conversion layer main joist integrative installation technology method
KR101973319B1 (en) * 2018-04-20 2019-04-29 (주)유창 High strength hanger for clamping ceiling frame

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575892A (en) * 2009-03-26 2009-11-11 北京市建筑工程装饰有限公司 Large-area lower edge nested aluminum plate curved hung ceiling with high punching rate and construction method thereof
CN103590529A (en) * 2013-10-23 2014-02-19 苏州金螳螂建筑装饰股份有限公司 Super-large space cured-surface iron suspended ceiling
CN107816161A (en) * 2017-10-31 2018-03-20 苏州金螳螂建筑装饰股份有限公司 A kind of furred ceiling assembled type steel frame conversion layer
CN108265872A (en) * 2018-01-26 2018-07-10 中建八局装饰工程有限公司 A kind of furred ceiling conversion layer main joist integrative installation technology method
KR101973319B1 (en) * 2018-04-20 2019-04-29 (주)유창 High strength hanger for clamping ceiling frame

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