Construction elevator overhanging type platform construction method for irregular balcony of high-rise housing

Abstract

The invention provides a construction elevator overhanging type platform construction method for an irregular balcony of a high-rise housing, and relates to the technical field of overhanging type platform construction, and the construction method comprises the steps of floor beam plate construction, overhanging I-shaped steel installation, plate buckle frame body erection, channel steel lower support installation, steel pull rod installation, construction elevator channel installation, construction elevator protection door installation and the like. The construction elevator ring buckle channel platform can be built under the conditions that the width of a balcony is gradually increased and odd and even floors are changed in a staggered mode, and high-altitude material transportation and operation safety are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cantilever platform construction, in particular to a construction elevator cantilever platform construction method for irregular balconies of high-rise residential buildings. BACKGROUND

[0002] With the increasing development of urban social economy, new commercial complexes gradually become a kind of leisure and entertainment living place loved by contemporary people, and the high-rise residential buildings have novel and unique shapes with various irregular balcony forms. At present, the balcony width of residential buildings above 18 floors gradually expands from 1.6m to 2.9m, and the odd and even layers change staggeredly.

[0003] The irregular change of the balcony changes the distance between the construction elevator and the edge of the balcony, and the safety risk of the channel platform between them also gradually increases. How to accurately position the construction elevator, reduce the gap between the channel platform and the balcony, and avoid laying a cantilever I-beam on each floor is a technical problem worthy of study. SUMMARY

[0004] In view of the above prior art, the present application provides a construction elevator cantilever platform construction method for irregular balconies of high-rise residential buildings, aiming to solve the problems of difficult positioning of the construction elevator and high cost and long construction period of the traditional cantilever on each floor during the construction of the balcony width gradually increasing above 18 floors of high-rise residential buildings and the odd and even layers changing staggeredly.

[0005] The present application provides a construction elevator cantilever platform construction method for irregular balconies of high-rise residential buildings, comprising the following steps: S1, floor beam plate construction: supporting the floor beam plate formwork, installing the floor beam plate steel bars, pre-burying a plurality of U-shaped anchor bolts, and pouring the floor beam plate concrete; S2, cantilever I-beam installation: installing the cantilever I-beam on the upper end of the floor beam plate through the U-shaped anchor bolts, the cantilever I-beam and the U-shaped anchor bolts being arranged on both sides of the construction elevator cage, and the spacing between adjacent cantilever I-beams being not greater than 1.5m; S3, disc buckle frame body erection: erecting the disc buckle frame body on the upper side of the cantilever end of the cantilever I-beam; S4, channel steel bracing installation: installing the channel steel bracing on the lower side of the cantilever end of the cantilever I-beam to connect the lower layer beam plate; S5, steel pull rod installation: installing the steel pull rod on the upper side of the cantilever end of the cantilever I-beam to connect the upper layer beam plate; S6, construction elevator channel installation: the construction elevator channel is arranged at each floor elevation, ordinary steel pipes parallel to the long side direction of the balcony plate are fully laid on the disc buckle frame body and connected and fixed with the disc buckle frame body through fasteners, and after the ordinary steel pipes are fully bound with square timbers, the wooden formworks are fully laid; S7, construction elevator protection door installation: install the construction elevator protection door on the disc buckle frame body outside the construction elevator passage.

[0006] Preferably, in S1, the diameter of the U-shaped anchor bolt is 20mm, two 1.5m long third-class steel bars with a diameter of 18mm or more are welded at the inner side corner of the U-shaped anchor bolt, the U-shaped anchor bolt is embedded into the bottom reinforcement position of the floor beam slab, and the U-shaped anchor bolt is welded or tied with the bottom reinforcement of the floor beam slab.

[0007] Preferably, in S2, the cantilevered I-beam is a 16# I-beam, and the strength of the floor beam slab concrete during installation is not less than C10.

[0008] Preferably, in S2, the fixed end of the cantilevered I-beam is fixed with the floor beam slab by two U-shaped anchor bolts, and the cantilevered I-beam is 20-22cm higher than the top surface of the floor beam slab, and the outermost U-shaped anchor bolt is installed at a distance of 20cm from the tail of the cantilevered I-beam.

[0009] Preferably, in S2, the gap between the U-shaped anchor bolt and the cantilevered I-beam is tightly plugged with a hardwood wedge, and is fixed by double nuts, and the exposed nut is not less than 3 turns and 10mm.

[0010] Preferably, in S3, the vertical rods of the disc buckle frame body are Ф48*3.2 steel pipes, the longitudinal spacing is 0.9m / 1.5m, the transverse spacing is 0.3m / 0.6m / 1.2, and the horizontal rod step distance is 2m.

[0011] Preferably, in S4, one end of the steel pull rod is installed on the cantilevered I-beam through an ear plate, and the other end is installed on the upper beam slab through a high-strength bolt.

[0012] Compared with the prior art, the beneficial effects of the present application are as follows: the construction method of the construction elevator cantilevered platform for the irregular balcony of a high-rise residence provided by the present application can complete the construction of the disc buckle passage platform under the conditions that the balcony width gradually increases and the odd and even layers are staggered, and ensures the safety of high-altitude material transportation and operation.

[0013] The present application can be used for the erection of the elevator passage cantilevered I-beam disc buckle frame body under the conditions of irregular changes (gradual increase or decrease in width, staggered changes of odd and even layers, etc.) of the balcony of a high-rise residence; the method is simple and practical to operate, can erect a cantilevered construction elevator platform frame body five floors at a time, completes the transportation and construction of high-altitude secondary structure and decoration materials, avoids the pre-buried cantilevered I-beam of each floor, shortens the construction period, saves the materials and construction cost of I-beams, channel steels, bolts and steel pull rods, avoids the excessive distance between the platform and the edge of the balcony structure by setting three rows of vertical rods, ensures the safety of high-altitude operation, and the turnover rate of materials such as disc buckle vertical rods, crossbars, I-beams and channel steels is high, the environmental protection performance is good, meets the green construction requirements, and is economical. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The figure is a construction schematic diagram of the construction elevator overhanging platform construction method for the irregular balcony of the high-rise residence in the embodiment of the present application.

[0015] Figure 2 The figure is a plane schematic diagram of the construction elevator overhanging platform construction method for the irregular balcony of the high-rise residence in the embodiment of the present application.

[0016] In the figure: 1, U-shaped anchoring bolt; 2, floor beam slab; 3, overhanging I-beam; 4, construction elevator cage; 5, disc buckle frame body; 6, channel steel lower support; 7, steel pull rod; 8, ear plate; 9, high-strength bolt; 10, construction elevator passage; 11, construction elevator protection door. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0018] Embodiment: a construction elevator overhanging platform construction method for an irregular balcony of a high-rise residence, as shown in Figure 1 , 2 The method comprises the following steps: S1, floor beam slab construction: supporting floor beam slab formwork, installing floor beam slab reinforcement, pre-burying a plurality of U-shaped anchoring bolts 1, and pouring floor beam slab concrete; the diameter of the U-shaped anchoring bolt 1 is 20 mm, two 1.5 m long straight diameters ≥ 18 mm three-stage reinforcements are welded at the inner side corner of the U-shaped anchoring bolt 1, the U-shaped anchoring bolt 1 is pre-buried to the bottom reinforcement position of the floor beam slab 2, the U-shaped anchoring bolt 1 and the bottom reinforcement of the floor beam slab 2 can be welded or tightly bound to strengthen the concrete bearing capacity, the embedded straight section of the floor beam slab concrete is not less than 20 cm at each end, the U-shaped anchoring bolt 1 can be placed in advance with a foam board, and the foam board is removed or a 200*250 mm wooden box is pre-buried when encountering a balcony counter.

[0019] S2, cantilever I-beam installation: install cantilever I-beam 3 on the upper end of floor beam slab 2 through U-shaped anchor bolt 1, cantilever I-beam 3 is 16# I-beam, the strength of floor beam slab concrete during installation is not less than C10; the fixed end of cantilever I-beam 3 is fixed with floor beam slab 2 through two U-shaped anchor bolts 1 with a spacing of 200mm, and can be 20-22cm higher than the top surface of floor beam slab, the outermost U-shaped anchor bolt 1 is installed at a distance of 20cm from the tail of cantilever I-beam 3. When cantilever I-beam 3 is installed at the position of shear wall, 200*250 wooden boxes are pre-buried before pouring shear wall concrete, which is convenient for later removal. The main reinforcement needs to be disconnected at the hole opening, and the reinforcing steel bars are arranged around the hole opening. The gap between U-shaped anchor bolt 1 and cantilever I-beam 3 is tightly plugged with hardwood wedge, and is fixed with double nuts, the exposed nut is not less than 3 turns and 10mm; cantilever I-beam 3 and U-shaped anchor bolt 1 are arranged on both sides of construction elevator cage 4, and should not be arranged in the elevator protection door and passage, so as not to affect the passage of steel pull rod and channel steel support in the later stage, and the spacing between adjacent cantilever I-beams 3 is not greater than 1.5m.

[0020] S3, disc buckle frame body erection: erect disc buckle frame body 5 on the upper side of the cantilever end of cantilever I-beam 3; when disc buckle frame body 5 is erected, the strength of the main body structure concrete is not less than C15; the vertical rod of disc buckle frame body 5 is Ф48*3.2 steel pipe, the longitudinal spacing is 0.9m / 1.5m, the transverse spacing is 0.3m / 0.6m / 1.2, and the horizontal rod step distance is 2m.

[0021] S4, channel steel support installation: install channel steel support 6 on the lower side of the cantilever end of cantilever I-beam 3 to connect the lower beam slab.

[0022] S5, steel pull rod installation: install steel pull rod 7 on the upper side of the cantilever end of cantilever I-beam 3 to connect the upper beam slab; one end of steel pull rod 7 is installed on cantilever I-beam 3 through lug plate 8, and the other end is installed on the upper beam slab through high-strength bolt 9; steel pull rod 7 is a round steel with a diameter of 20mm, lug plate 8 is a 120*165*12 steel plate with Q235-A material, the connection between lug plate 8 and cantilever I-beam 3 adopts double-face fillet weld, and the weld leg height is 6mm; the specification of high-strength bolt 9 is 8.8 grade M20, and the upper beam slab concrete strength reaches more than 75% before high-strength bolt 9 is embedded, so as to tension steel pull rod 7.

[0023] S6, construction elevator passage installation: construction elevator passage 10 is arranged at the floor elevation of each floor, Ф48*2.7 ordinary steel pipes are fully laid on disc buckle frame body 5 in parallel to the long side direction of balcony plate, and are fixed with disc buckle frame body 5 through fastener connection, 15mm thick wooden formwork is fully laid after 40*90mm wooden square is fully bound on the ordinary steel pipe.

[0024] S7, construction elevator protection door installation: install construction elevator protection door 11 on the outer side of disc buckle frame body 5 at construction elevator passage 10.

[0025] The embodiment is suitable for irregular balcony of high-rise concrete structure house, and a cantilevered construction elevator platform frame body can be erected every five floors, the transportation and construction of high-altitude secondary structure and decoration materials are completed, embedded cantilevered I-beams of each floor are avoided, the construction period is shortened, the materials such as I-beams, channel steels, bolts and steel pull rods and the construction cost are saved, three rows of vertical rods are arranged, the distance between the platform and the edge of the balcony structure is avoided to be too large, the safety of high-altitude operation is ensured, meanwhile, the turnover utilization rate of materials such as disc buckle vertical rods, cross rods, I-beams and channel steels is high, the environmental protection is good, the green construction requirement is met, and the economy is strong.

[0026] The above is only an embodiment of the application, and does not limit the patent range of the application, and any equivalent scheme using the content of the application specification, directly or indirectly used in other related technical fields, is also within the patent protection range of the application.

Claims

1. A construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise building, characterized in that, It comprises the following steps: S1, floor beam plate construction: supporting floor beam plate formwork, installing floor beam plate reinforcement, embedding several U-shaped anchor bolts, pouring floor beam plate concrete; S2, cantilevered I-beam installation: installing cantilevered I-beams on the upper end of the floor beam plate through the U-shaped anchor bolts, the cantilevered I-beams and the U-shaped anchor bolts being arranged on both sides of the construction elevator cage, the spacing between adjacent cantilevered I-beams being not greater than 1.5 m; S3, disc buckle frame body erection: erecting a disc buckle frame body on the upper side of the cantilevered end of the cantilevered I-beam; S4, channel steel bracing installation: installing channel steel bracing on the lower side of the cantilevered end of the cantilevered I-beam to connect the lower beam plate; S5, steel pull rod installation: installing a steel pull rod on the upper side of the cantilevered end of the cantilevered I-beam to connect the upper beam plate; S6, construction elevator passage installation: the construction elevator passage is arranged at each floor elevation, ordinary steel pipes are fully laid on the disc buckle frame body in parallel to the long side direction of the balcony plate, and are fixed through fasteners connected with the disc buckle frame body, after wood frames are fully bound on the ordinary steel pipes, wood formworks are fully laid; S7, construction elevator protective door installation: installing a construction elevator protective door on the outer side of the disc buckle frame body at the construction elevator passage.

2. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1, wherein In S1, the diameter of the U-shaped anchor bolt is 20 mm, two 1.5 m long third-level steel bars with a diameter of not less than 18 mm are welded on the inner side corner of the U-shaped anchor bolt, the U-shaped anchor bolt is embedded to the bottom steel bar position of the floor beam plate, and the U-shaped anchor bolt is welded or bound firmly with the bottom steel bar of the floor beam plate.

3. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1 or 2, characterized in that, In S2, the cantilevered I-beam is a 16# I-beam, and the strength of the floor beam plate concrete during installation is not less than C10.

4. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1 or 2, characterized in that, In S2, the fixed end of the cantilevered I-beam is fixed with the floor beam plate by two U-shaped anchor bolts, and is 20-22 cm higher than the top surface of the floor beam plate, and the outermost U-shaped anchor bolt is installed at a distance of 20 cm from the tail of the cantilevered I-beam.

5. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1 or 2, characterized in that, In S2, the gap between the U-shaped anchor bolt and the cantilevered I-beam is tightly plugged with a hardwood wedge, is fixed with double nuts, and the exposed nut is not less than 3 turns and 10 mm.

6. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1 or 2, wherein In S3, the vertical rods of the disc buckle frame body are Ф48*3.2 steel pipes, the longitudinal spacing is 0.9 m / 1.5 m, the transverse spacing is 0.3 m / 0.6 m / 1.2, and the horizontal rod step distance is 2 m.

7. The construction method of a cantilever type platform of a construction elevator for an irregular balcony of a high-rise residential building according to claim 1 or 2, wherein In S4, one end of the steel pull rod is installed on the cantilevered I-beam through an ear plate, and the other end is installed on the upper beam plate through a high-strength bolt.

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