CN108625483B - Equipment for jacking construction of assembled additional elevator shaft structure - Google Patents
Equipment for jacking construction of assembled additional elevator shaft structure Download PDFInfo
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- CN108625483B CN108625483B CN201810695242.5A CN201810695242A CN108625483B CN 108625483 B CN108625483 B CN 108625483B CN 201810695242 A CN201810695242 A CN 201810695242A CN 108625483 B CN108625483 B CN 108625483B
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 18
- 238000012806 monitoring device Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 239000011150 reinforced concrete Substances 0.000 claims description 28
- 239000000126 substance Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 230000032683 aging Effects 0.000 description 6
- 238000009417 prefabrication Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3522—Extraordinary methods of construction, e.g. lift-slab, jack-block characterised by raising a structure and then adding structural elements under it
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/005—Lift shafts
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- Structural Engineering (AREA)
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- Electromagnetism (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses equipment for jacking construction of an assembled external elevator well structure, which comprises a jacking guide device, a jacking device and a jacking monitoring device, wherein the jacking guide device comprises at least two vertical guide rails, a positioning slide block assembly matched with each vertical guide rail and a connecting member between the vertical guide rail and an existing building; the positioning slide block assembly comprises a positioning slide block and a positioning buckle, and the positioning buckle connects the positioning slide block with each layer of frame cross beam of the well structure; the jacking device comprises a supporting frame, a lifting device and a lifting stabilizing device; in the jacking construction process, the jacking guide device ensures the position relation between the well structure and the existing building, the lifting stabilizing device ensures the position relation between the well structure and the jacking device supporting frame, and the jacking monitoring device monitors the jacking operation state in real time. The equipment of the invention is used for construction, thus not only occupying less space and having high efficiency, but also avoiding large-scale hoisting equipment and scaffolds, avoiding high-altitude operation, saving labor force and having little interference to residents.
Description
Technical Field
The invention relates to installation equipment of an assembled building structure, in particular to installation equipment for an existing multi-storey building externally-added elevator shaft structure by factory standardized prefabrication and field sectional assembly.
Background
According to the criteria defined in the united nations population aging and its socioeconomic consequences in 1956, a country or region is said to be aged when the population of 65 years and older in that country or region is more than 7% of the total population. The world conference of vienna aging problems in 1982, determined that the population of aged 60 years and older accounts for more than 10% of the total population, implying that this country or region has entered severe aging.
According to the fifth population census result in 2000, the old population of China over 65 years old reaches 8811 ten thousand people, accounting for 6.96 percent of the total population, the population over 60 years old reaches 1.3 hundred million people, accounting for 10.2 percent of the total population, and the old society is formally entered into according to international standards. By 2017, the population of 60 years old and older in China is 2.4 hundred million people, accounting for 17.3% of the total population, and the population of 65 years old and older is 1.58 hundred million people, accounting for 11.4% of the total population. The population proportion of the old in China is seriously exceeded, the old becomes the country with the largest population in the world, and the problem of social aging is very serious.
At present, in urban residences in China, a large number of multi-storey residences are built in the eighth and nineties of the 20 th century, the height is between 10 and 24 meters, the number of layers is between 4 and 7, and the multi-storey residences are limited by the current economic development level, the construction standard and related building specifications, and no elevator is built. Along with the trend of serious population aging in China, the method is imperative for the aging adaptation of the existing multi-storey residential building with the elevator. In recent years, various places such as Guangdong, shanghai, beijing, fuzhou, hangzhou and the like encourage urban residents to pay and install elevators by themselves, a great deal of engineering practice is carried out, and a good social effect is achieved. Clearly proposed in 2018 to encourage conditional elevator installation.
At present, most of the related technologies of existing multi-storey buildings for additionally installing elevators adopt a construction mode of constructing factory prefabrication site assembly or a construction mode of factory whole prefabrication site whole hoisting. The patent document of publication number CN102583131a discloses an elevator shaft wall assembled by adopting a combined type derrick, which comprises a derrick structure formed by connecting 4 upright posts distributed at four corners of a shaft with at least 8 cross beams, wherein a brace or a reinforcing plate is arranged between the cross beams and the upright posts, and the upper and lower adjacent derrick structures are aligned through upright post joints and connecting seats at the top ends of the upright posts and are connected through connecting holes by high-strength bolts. A modular hoistway monomer and a hoistway thereof are disclosed in patent document CN107117517 a. The vertical square-through type vertical channel comprises a plurality of square-through type vertical channel units, square-through type vertical channel units and channel steel welding forming cross sections, wherein the upper ends and the lower ends of two adjacent vertical square-through type vertical channel units are respectively provided with channel steel which are connected along the transverse direction, the middle parts of the two adjacent vertical square-through type vertical channel units are provided with transverse square-through type vertical channel units, and the upper ends and the lower ends of the two adjacent vertical channel units are connected through the fixing blocks welded on the side faces of the channel steel at the upper ends and the lower ends of the vertical channel units, and core columns in the vertical square-through type vertical channel units are connected. In the solution, the main frame structure can realize factory standardized prefabrication, but the number and the variety of the components are large, and the connecting nodes are complex. And even if the construction mode of factory integral prefabrication and field integral hoisting is adopted, after the construction of the main body frame structure is completed, the construction of enclosure structures such as curtain walls and the like still cannot avoid a large amount of high-altitude operation, and secondary construction such as scaffold construction, protection engineering and the like is performed. Meanwhile, in the construction process of real integral hoisting, due to narrow roads in the field, the distance between existing buildings is limited, and the interference of surrounding trees, street lamps and the like is added, so that large-sized transportation vehicles and hoisting machinery are difficult to enter. Even if the construction site can be approached, not only is the operation space limited, but also the safety measures cannot be guaranteed, and the potential safety hazard is large, so that the interference to residents is large. Among them, although the above-mentioned patent document of publication CN102583131a mentions that a jacking construction method can be adopted, the derrick proposed by the above-mentioned patent document has many structural members and complicated connection, and does not have structural advantages suitable for jacking construction.
In addition, patent document CN107215749a discloses an elevator hoistway structure and a lifting method, and proposes a construction method of sectionally lifting in a factory whole prefabricated site. However, the lifting device is installed on the side edge of the lower layer structure frame, the lifting device needs to be lifted to a new height after each lifting operation is finished, the next lifting operation is completed, the lifting operation needs to be completed in two directions of vertical and horizontal, the operation links are more, and the technology is complex.
Jacking is a construction method commonly used for roof structures with large spans, heavy-duty racks and the like. The method is characterized in that the grid structure is assembled on site, and then gradually lifted to a design position by using a jack, so that the lifting force is high and stable. The jacking method is different from the lifting method in that: the lifting devices are positioned differently, the former being located below the structural pivot point and the latter being located above; the two are different in action principle, the lifting equipment such as a jack adopted by the former can rise along with the structure, and the lifting equipment such as a winch adopted by the latter is kept unchanged in position in the lifting process.
Disclosure of Invention
Aiming at the problems of long construction period, more high-altitude operation, large interference to residents, limited site space, potential safety hazard, more operation links, complex technology and the like in the existing multi-storey building assembled additional elevator shaft engineering, the invention provides equipment for the jacking construction of an assembled additional elevator shaft structure, which is used for installing the elevator shaft structure, has small occupied space, short construction period, small interference to residents, avoids high-altitude operation, does not use large-scale hoisting equipment, and is convenient, safe and quick.
In order to solve the technical problems, the invention provides equipment for jacking construction of an assembled external elevator well structure, wherein the elevator well structure comprises a reinforced concrete foundation, a prefabricated steel frame supporting structure, a light curtain wall maintenance structure and a roof, the prefabricated steel frame supporting structure comprises a first layer frame, N standard layer frames and a top layer frame, and the N standard layer frames are sequentially recorded as a second layer frame, a third layer frame, a … … layer frame, an N-1 layer frame and an N layer frame from bottom to top; each layer of frame unit comprises more than four upright posts, and every two adjacent upright posts in each layer of frame unit are connected through more than one frame cross beam.
The jacking equipment comprises a jacking guiding device, a jacking device and a jacking monitoring device.
The jacking guide device comprises at least two vertical guide rails, a positioning slide block assembly matched with each vertical guide rail and a connecting member for connecting the vertical guide rails with an external wall or a reinforced concrete beam of an existing building; the connecting member comprises a guide rail connecting member and a wall connecting member, and the vertical guide rail is connected with the wall connecting member through the guide rail connecting member; the wall connecting members are connected with the guide rail connecting members and the vertical guide rails through bolts, and the wall connecting members are connected with the outer wall or the reinforced concrete beam of the existing building through chemical bolts; the wall connecting member, the vertical guide rail and the bolt holes on the guide rail connecting member are long holes so as to be convenient for correcting the position and the verticality of the vertical guide rail; the positioning sliding block assembly comprises a positioning sliding block and a positioning buckle, and the positioning buckle is used for connecting the positioning sliding block with each layer of frame cross beam in the elevator shaft structure;
the jacking device comprises a supporting frame, a lifting device and a lifting stabilizing device; the supporting frame comprises four upright posts, two diagonal bracing positioning strips are fixed on the inner side of each upright post, a row of bolt holes are formed in the diagonal bracing positioning strips, a scissor diagonal bracing is arranged between the adjacent upright posts, two ends of each scissor diagonal bracing are fixed on the diagonal bracing positioning strips through bolts, and the tops of the four upright posts are connected with fastening inhaul cables; the lifting device comprises four sets of lifting units, wherein each set of lifting unit comprises a lifting steel rope, a servo motor unit, a winch driven by the servo motor unit and a fixed pulley arranged at the top of each upright post, a movable pulley is arranged on the lifting steel rope, and a lifting hook and a sling for binding a frame beam and connecting the lifting hook are arranged on the movable pulley; one end of the lifting steel rope is fixed with the rotating shaft of the winch, and the other end of the lifting steel rope sequentially bypasses the fixed pulley and the movable pulley at the top of the upright post and is then fixed on the upright post; the lifting and stabilizing device comprises a longitudinal sliding groove, a stabilizing sliding block and a stabilizing buckle, wherein the longitudinal sliding groove is arranged on the outer side of a stand column of the supporting frame, the stabilizing sliding block is fixed with a frame cross beam in each layer of elevator shaft structural unit through the stabilizing buckle, and the stabilizing sliding block vertically slides along the longitudinal sliding groove in the jacking process, so that stable restraining force is formed in the front-back direction and the left-right direction of the structural frame, and the horizontal position relationship between the elevator shaft structure and the supporting frame of the jacking device is ensured.
The jacking monitoring device comprises two groups of laser transmitters and laser receivers which are in one-to-one correspondence; the laser transmitters are fixed at the upper edges of two opposite side surfaces or two ends of the upper edge of the same side surface of the elevator hoistway top layer structural unit, the laser receivers are fixed on the reinforced concrete foundation, and laser beams emitted by the laser transmitters are vertically aligned with the laser receivers; in the jacking construction process, whether the structural frame is twisted in the horizontal direction or inclined in the vertical direction is monitored in real time, wherein the laser beam emitted by any laser emitter exceeds the receiving range of the laser receiver, the laser receiver alarms, the jacking construction precision is prompted to exceed the error allowable range, and the operation is required to be suspended and the safety inspection is required.
Furthermore, the invention is used for the jacking construction equipment of the assembled externally-added elevator shaft structure, wherein the scissor diagonal brace consists of two equal-length crossed angle steels, two ends of each angle steel are provided with bolt holes, the middle of the two angle steels is connected through a bolt, and the two angle steels rotate around the bolt; the distance between two adjacent upright posts is adjusted by adjusting the included angle between the crossed angle steels so as to adapt to specific spacing requirements in different projects.
The servo motor group comprises servo motors, a controller and a speed reducer, and four servo motor groups do synchronous motion in the construction process.
Compared with the prior art, the invention has the beneficial effects that:
the equipment of the invention is used for installing the assembled additional elevator well structure on the existing building, can get rid of heavy transport vehicles and hoisting equipment, reduces the space limitation of construction sites, and is convenient, safe and efficient. The field construction period is shortened, the engineering precision is improved, and the method accords with the development trend of building industrialization, standardization and assembly. In the installation, the frame supporting structure and the curtain wall enclosure structure are integrally prefabricated and assembled in sections respectively, and the main work of on-site installation is completed on the ground, so that the engineering of on-site construction of scaffolds is saved, a large amount of high-altitude operation is avoided, the construction efficiency is improved, the construction period is shortened, the labor cost is saved, and the influence on the daily life of residents is reduced. The frame supporting structure of the elevator well and the field assembly of the curtain wall maintenance enclosure are added, only small carrying and lifting equipment is needed, the construction mode of jacking step by step from bottom to top is adopted, the main structure of the elevator well can be constructed first, then the existing building is transformed and constructed, the main structure replaces a scaffold, the enclosure structure serves as a safety net, dregs are vertically transported through the elevator well, the interference to daily life of residents is reduced, and the safety of the construction process is improved.
Drawings
Fig. 1 is an isometric view of the structure of an elevator hoistway in which the apparatus of the present invention is to be constructed;
FIG. 2 is a cross-sectional view of the foundation and prefabricated steel frame support structure shown in FIG. 1;
FIG. 3 is a cross-sectional view of the foundation shown in FIG. 2 with a strip-shaped foundation disposed in front of the foundation;
fig. 4-1 is a schematic view of the construction of a first embodiment of a flexible connection member between the hoistway structure and an existing building;
FIG. 4-2 is an isometric view of the flexible connection unit of FIG. 4-1;
fig. 5-1 is a schematic diagram of a second embodiment of a flexible connection member between an elevator hoistway structure and an existing building;
FIG. 5-2 is an isometric view of the flexible connection unit of FIG. 5-1;
fig. 6-1 is a schematic view of an embodiment of the lifting, positioning and guiding device of the present invention for use in an apparatus for jacking construction of an assembled add-on elevator hoistway structure;
FIG. 6-2 is an isometric view of the lift guide shown in FIG. 6-1;
fig. 7-1 is a schematic view of a second embodiment of a lifting, positioning and guiding device for use in an apparatus for use in an assembled add-on elevator hoistway structure jacking construction of the present invention;
FIG. 7-2 is an isometric view of the lift guide shown in FIG. 7-1;
fig. 8 is an isometric view of a local lifting fixture of a lifting apparatus in an apparatus for use in an assembled externally applied elevator hoistway structure jacking construction of the present invention;
fig. 9 is an overall isometric view of a lifting apparatus of the present invention used in an apparatus for the jacking construction of an assembled add-on elevator hoistway structure;
fig. 10-1 is a schematic view of a state before installation and lifting construction equipment is lifted during construction of an elevator hoistway structure;
fig. 10-2 is a schematic diagram of the lifting process under the premise shown in fig. 10-1.
In the figure:
10-roof, 11-pile foundation, 12-reinforced concrete box foundation, 13-reinforced concrete strip foundation, 14-pre-buried connection member, 20-first-tier frame, 21-first-tier frame column, 30-standard-tier frame, 31-standard-tier frame column, 32-standard-tier frame beam, 40-top-tier frame, 41-top-tier frame column, 42-top-tier frame lower beam, 43-top-tier frame upper beam, 50-lightweight curtain wall enclosure, 60-flexible connection member, 61-wall connection member, 70-jacking guide, 71-vertical guide rail, 711-guide rail connection member, 72-positioning slide assembly, 721-positioning slide, 722-positioning buckle, 80-jacking device, 81-support frame, 811-support column, 812-diagonal brace positioning bar, 813-scissor diagonal brace, 814-fastening cable, 82-lifting device, 821-lifting cable, 822 servo motor, 823-winch, 824-fixed pulley, 826-lifting hook, 827-sling, 83-lifting device, longitudinal slide, 833-sliding block, stability-stability, 831-stability, light emitter, 91-stability monitoring device, 91-stability-and stability-monitoring device.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the specific embodiments, which are only illustrative of the present invention and are not intended to limit the present invention.
As shown in fig. 1 and 2, the assembled external elevator shaft structure to be installed and constructed by the apparatus of the present invention includes a foundation, a prefabricated steel frame support structure, a lightweight curtain wall enclosure 50 and a roof 10. The foundation is an independent foundation and is provided with settlement joints and earthquake-resistant joints at the corresponding floor slabs and outer walls according to corresponding building standard requirements with the existing building. According to the concrete engineering geological conditions, the foundation adopts a reinforced concrete box foundation 12, or the reinforced concrete box foundation 12 is combined with a local reinforced concrete strip foundation 13, as shown in fig. 3, or the pile foundation 11 is combined with the reinforced concrete box foundation 12 and the local reinforced concrete strip foundation 13. The form and depth of the foundation are determined by the foundation structure design; the net depth of the interior of the foundation is determined by the technical index of the buffer space at the bottom of the elevator; the plane size of the foundation is determined by the building and structural design according to the specification of the elevator. If the pile foundation 11 is combined with the reinforced concrete box foundation 12 or the local reinforced concrete strip foundation 13, the pile foundation 11 is deep into the side wall of the box foundation or the strip foundation and is connected with the internal structural steel bars, and the position, specification, depth and number of the pile foundation 11 are determined by the design of the foundation structure. The top of the reinforced concrete box foundation 12 or the reinforced concrete bar foundation 13 is provided with a pre-buried connecting member 14, and the plane position of the pre-buried connecting member 14 is consistent with the position of the prefabricated steel frame supporting structure upright post of the elevator well.
The prefabricated steel frame supporting structure comprises a first-layer frame 20 and a top-layer frame 40, and N standard-layer frames 30 are arranged between the first-layer frame 20 and the top-layer frame 40; the N standard layer frames are sequentially marked as a second layer frame, a third layer frame, … …, an N-1 layer frame and an N layer frame from bottom to top.
The first-layer frame 20 comprises more than 4 first-layer frame upright posts 21, the positions and the heights of the upright posts 21 are determined by a building design scheme, the cross section can be square steel pipes, round steel pipes or I-steel, and the size specification of the cross section is determined by the structural design. The bottom end of the first-layer frame upright post 21 is connected with the embedded connecting member 14 positioned at the top of the reinforced concrete foundation, the connecting mode is recommended to adopt welding or bolting, and the specific form of the connecting part is determined according to the specific design of the section form and the size of the upright post 21.
Each standard layer frame 30 comprises standard layer frame upright posts 31 which are in one-to-one correspondence with the positions of the first layer frame upright posts 21, and the height of each standard layer frame upright post 31 is the same as the height of a corresponding layer of the existing building; the standard layer frame upright posts 31 are prefabricated in a factory, the bottoms between two adjacent standard layer frame upright posts 31 in the same standard layer frame are connected with standard layer frame cross beams 32, namely, the two ends of each standard layer frame upright post 31 are provided with connecting seats and connecting pieces for connecting the standard layer frame cross beams 32 through prefabrication welding, and the standard layer frame cross beams 32 and the standard layer frame upright posts 31 on the two sides form a U-shaped structure, so that the frame structure is conveniently lifted during later-stage jacking construction; the standard floor frame beam 32 is provided with a floor slab at the elevator hall or the corridor part except for the space reserved in the elevator shaft, the elevation of the floor slab finished layer of the standard floor frame 30 is the same as that of the floor corresponding to the existing building, and the floor slab can be in a reinforced concrete structure form cast on corrugated steel plates.
The top frame 40 includes top frame columns 41 corresponding to the standard layer frame columns 31 of the nth layer frame one by one, and the height of the top frame columns 41 is determined by the architectural design according to the elevator type, specification and technical index of the top buffer space. A top frame lower cross beam 42 and a top frame upper cross beam 43 are arranged between two adjacent top frame upright posts 41; the roof frame uprights 41 and roof frame upper cross members 43 are connected to the roof. The roof is provided with a waterproof, flashing, drainage structure and a roof deformation joint.
Among the first-layer frame upright posts 21, the N standard-layer frame upright posts 31 and the top-layer frame upright posts 41, the upright posts on the upper and lower adjacent layers are in butt joint by adopting connecting pieces, the form of each connecting piece is determined according to the specific design of the section form and the size of each upright post, and the connecting mode is recommended to adopt welding or bolting. The prefabricated steel frame support structure is externally provided with a light curtain wall enclosure structure 50, namely, a stress structure is formed by a transverse main keel, a vertical main keel, a transverse frame and a vertical frame outside the structural frame, and the light curtain wall enclosure structure 50 is formed by connecting light external wall panels or glass with the light external wall panels or glass. The standard floor frame 30 and the corresponding light curtain wall enclosure 50 form a standard floor elevator hoistway unit, and the top floor frame 40 and the corresponding light curtain wall enclosure 50 form a top floor elevator hoistway unit. In the post-jacking construction process, after the structure assembly of the standard floor frame is completed, the assembly of the corresponding light curtain wall enclosure structure 50 is immediately carried out, and finally jacking operation is carried out, namely, the top-layer elevator well unit and the standard floor elevator well unit are independent units of the jacking operation. The light curtain wall enclosure 50 may be made by conventional methods of various light composite curtain walls or glass curtain walls. The light curtain wall enclosure 50 is reserved with an elevator access passage or a unit access.
After the prefabricated steel frame supporting structures and the light curtain wall enclosure structures are installed, connecting the steel frame cross beams of all layers with wall connecting members 61 fixed on the existing building through a plurality of soft connecting members 60, wherein the soft connecting members are U-shaped connecting members or V-shaped connecting members as shown in fig. 4-1 and 4-2; the wall connecting member is connected with the outer wall of the existing building or the reinforced concrete beam through chemical bolts, so that flexible connection between the building plates of each floor of the existing building and the main frame structure of the newly-built elevator shaft is realized.
The apparatus for the jacking construction of the above-described hoistway structure mainly includes a jacking guide 70, a jacking device 80, and a jacking monitoring device 90.
As shown in fig. 6-1, 6-2, 7-1 and 7-1, the lift guide 70 includes at least two vertical rails 71, and a positioning slider assembly 72 coupled to each vertical rail 71.
The vertical guide rail 71 is connected with the wall connecting member 61 through a guide rail connecting member 711, and the wall connecting member 61 is connected with the structures such as the outer wall or the reinforced concrete beam of the existing building through chemical bolts; the wall body connecting member 61 and the guide rail connecting member 711, and the guide rail connecting member 711 and the vertical guide rail 71 are connected by bolts; the bolt holes of the wall connecting member 61, the vertical guide rail 71 and the guide rail connecting member 711 are long holes, so that the position and the verticality of the vertical guide rail 71 can be corrected conveniently.
The positioning slide assembly 72 includes a positioning slide 721 and a positioning buckle 722. The positioning buckle 722 is used to connect the positioning slider 721 with each floor frame rail in the hoistway structure, as shown in fig. 6-1 and 7-1.
As shown in fig. 9, the jacking device 80 includes a supporting frame 81, a lifting device 82, and a lifting stabilizer 83.
The supporting frame 81 comprises four upright posts 811, two diagonal bracing positioning strips 812 are fixed on the inner side of each upright post 811, a row of bolt holes are formed in the diagonal bracing positioning strips 812, a scissor diagonal bracing 813 is arranged between every two adjacent upright posts 811, each scissor diagonal bracing 813 consists of two equal-length crossed angle steels, bolt holes are reserved at two ends of each angle steel, the two angle steels are connected through bolts, and the two angle steels can rotate around the middle bolt. The distance between two adjacent columns 811 can be adjusted by adjusting the included angle between the crossed angle steels so as to adapt to specific spacing requirements in different projects. Both ends of each diagonal bracing 813 are fixed on the diagonal bracing positioning strips 812 through bolts, and the tops of the four upright posts 811 are connected with fastening inhaul cables 814.
The lifting device 82 comprises four sets of lifting units, each set of lifting units comprises a lifting steel rope 821, a servo motor unit 822, a winch 823 driven by the servo motor unit 822 and a fixed pulley 824 arranged at the top of each upright 811, a movable pulley 825 is arranged on the lifting steel rope 821, and a lifting hook 826 and a sling 827 binding a frame beam and connecting the lifting hook 826 are arranged on the movable pulley 825, as shown in fig. 8 and 9. One end of the lifting steel rope 821 is fixed to a rotating shaft of the hoist 822, and the other end of the lifting steel rope 821 is fixed to the upright 811 after sequentially bypassing the fixed pulley 824 and the movable pulley 825 at the top of the upright. The servo motor unit comprises a servo motor, a controller and a speed reducer, and four servo motor units 822 synchronously move in the construction process.
The lifting stabilizer 83 includes: the outer side of the supporting frame upright post 811 in the jacking device 80 is provided with a longitudinal sliding chute 831, a stable sliding block 832 and a stable buckle 833, the stable sliding block 832 is fixed with the cross beam of each layer of frame through the stable buckle 833, and the stable sliding block 832 vertically slides along the longitudinal sliding chute 831 in the jacking process so as to ensure the horizontal position relationship between the structural frame and the supporting frame 81 in the jacking device 80, and form stable restraining force in the front-back direction and the left-right direction of the structural frame.
The jacking monitoring device 90 includes: the two groups of laser transmitters 91 and laser receivers 92 which are in one-to-one correspondence, wherein the laser transmitters 91 are fixed at the upper edges of two opposite side surfaces or two ends of the upper edge of the same side surface of the elevator hoistway top layer structural unit, and the laser receivers 92 are fixed on a reinforced concrete foundation to ensure that laser beams emitted by the laser transmitters 91 are vertically aligned with the laser receivers 92; in the jacking construction process, the position range of the laser beam emitted by the laser emitter 91 on the laser receiver 92 is monitored in real time, whether the structural frame is twisted in the horizontal direction or inclined in the vertical direction is monitored in real time, wherein the laser beam emitted by any one laser emitter 92 exceeds the receiving range of the laser receiver 93, the laser receiver 93 alarms, the jacking construction precision is prompted to exceed the error allowable range, and the operation needs to be suspended and the safety inspection is performed.
The construction method for carrying out the elevator shaft structure by using the equipment comprises the following steps:
firstly, excavating a foundation pit, and making a reinforced concrete foundation and pre-buried connecting members;
step two, as shown in fig. 6-1, 6-2, 7-1, 7-2, 8 and 9, the mounting apparatus includes:
at first, at least two vertical guide rails 71 are installed on the existing building according to the design scheme, and when the vertical guide rails are installed, the two vertical guide rails are arranged on different sides relative to an elevator shaft, so that stable constraint forces in the front-back direction, the left-right direction and the lifting process are ensured. The vertical guide rail 71 is connected with the outer side structure of the existing building through a guide rail connecting member 711 and a wall connecting member 61; the wall connecting member 61 is connected with the existing building through chemical bolts; the wall body connecting member 61 and the guide rail connecting member 711, and the guide rail connecting member 711 and the vertical guide rail 71 are connected by bolts; the bolt holes of the wall connecting member 61, the rail connecting member 711 and the vertical rail 71 are elongated holes so as to correct the position and verticality of the vertical rail 71. Each vertical rail 71 is fitted with a positioning slide assembly 72, said positioning slide assembly 72 comprising a positioning slide 721 cooperating with the vertical rail 71, and a positioning buckle 722 for connecting said positioning slide 721 with the frame rails of the elevator hoistway structure.
Then installing a supporting frame 81 of the jacking device 80, arranging four upright posts 811 of the supporting frame 81 transversely outwards along the long side of the elevator shaft plane on one side with a longitudinal sliding chute 831 according to the plane form of the elevator shaft to be built, and fixing the bottoms of the upright posts 811 at the bottom of the reinforced concrete foundation by bolts; two diagonal bracing positioning strips 812 are fixed on the inner side of each upright 811, a row of bolt holes are formed in each diagonal bracing positioning strip 812, a pair of scissor diagonal bracing 813 is arranged between every two adjacent upright 811, and two ends of each scissor diagonal bracing 813 are fixed on each diagonal bracing positioning strip 812 through bolts; the top of the four upright posts 811 is connected with a fastening cable 814, and the perpendicularity of each upright post 811 is ensured by adjusting the length of each fastening cable 814; meanwhile, the support frame 81 is prestressed by tightening the fastening cables 814, so that the rigidity and overall stability of the entire support frame 81 are improved.
Finally, the lifting device 82 of the lifting device 80 is installed: a servo motor 822 is arranged at the bottom of each upright 811, the output end of the servo motor 822 is connected with a winch 823, and a fixed pulley 824 is arranged at the top of each upright 811; the lifting device 82 is provided with four lifting steel cables 821, one end of each lifting steel cable 821 is fixed with a rotating shaft of a winch 823, the other end of each lifting steel cable 821 sequentially bypasses a fixed pulley 824 and a movable pulley 825 at the top of a stand 811 and is then fixed on the stand 811, a lifting hook 826 is fixed on each movable pulley 825, and the fit degree of the fixed pulley 824, the movable pulley 825 and the lifting steel cable 821 is adjusted.
Step three, lifting the elevator shaft structural units of each layer:
the lifting of the elevator shaft structural units of each floor, as shown in fig. 10-1 and 10-2, comprises:
3-1, jacking a top layer structural unit: firstly, respectively standing the top layer frame upright posts 41 at the positions of the corresponding embedded connecting members 14 of the reinforced concrete foundation; then, the top frame upper beam 43 and the top frame lower beam 42 are mounted at the respective positions, and are fixed after vertical and horizontal correction; and installing the main keel or the transverse and vertical frames of the light curtain wall enclosure 50 and the light external wall panels or glass until the assembly of the top layer structural unit is completed. The corresponding positioning slide blocks 721 are respectively fixed on the upper cross beams 43 of the top layer frame 40 corresponding to the vertical rails 71 through at least two positioning buckles 722; the four fixing sliders 832 are respectively fixed to the lower cross members 42 of the top frame 40 corresponding to the longitudinal sliding grooves 831 of the supporting columns 811 of the jacking device 80 by four fixing clips 833. Simultaneously, the lengths of the four lifting steel ropes 821 are adjusted, and the lifting hooks 826 on the movable pulleys 825 are respectively hung with the slings 827 fixed on the cross beam 42 at the lower part of the top layer frame 40, so that the four servo motor units are started to synchronously operate, and the top layer structural unit is lifted to a height slightly higher than that of a standard layer frame.
In addition, in order to ensure the verticality of the jacking construction of the hoistway structure, after the assembly of the top-layer structural unit is completed, before the jacking operation of the top-layer frame 40, a jacking monitoring device 90 needs to be installed, two laser transmitters 91 are installed on two opposite sides or two ends on the same side of the top-layer structural unit of the elevator hoistway, two laser receivers 92 are installed at corresponding positions of the reinforced concrete foundation, and laser beams emitted by the laser transmitters 91 are vertically aligned with the laser receivers 92 at the corresponding positions; in the jacking construction process, whether the elevator shaft structure is twisted in the horizontal direction or inclined in the vertical direction is monitored in real time through the jacking monitoring device 90, wherein the laser beam emitted by any one laser emitter 92 exceeds the receiving range of the laser receiver 93, the laser receiver 93 alarms, the jacking construction precision is prompted to exceed the error allowable range, and the operation needs to be suspended and the safety inspection is performed.
3-2, lifting a standard layer structure unit: the lower ends of the four upright posts 31 of the Nth standard layer frame are erected at the positions of the foundation embedded connecting members 14, the upper ends of the four upright posts 31 are aligned with the bottom ends of the upright posts 41 of the top layer frame, the top layer frame 40 is slowly lowered, and the connection of the upright posts 31 of the Nth standard layer frame and the upright posts 41 of the top layer frame and the connection of the cross beams 32 of the Nth standard layer frame and the upright posts 31 of the standard layer frame are completed; after vertical and horizontal correction, fastening by bolts; releasing the connection between the four stabilizing sliders 832 and the stabilizing buckles 833, releasing the four lifting cables (821), and releasing slings 827 on the lower cross beam 42 of the top frame (40); installing a main keel or a transverse and vertical frame of the light curtain wall enclosure structure 50 corresponding to the Nth standard layer and a light external wall panel or glass until the assembly of the Nth standard layer structure unit is completed; the corresponding positioning slide blocks 721 are respectively fixed on the lower cross beams 42 of the top layer frame 41 corresponding to the vertical rails 71 through at least two positioning buckles 722; the four fixing sliders 832 are respectively fixed on the Nth layer of standard layer frame beams 32 corresponding to the longitudinal sliding grooves 831 of the supporting upright posts 811 in the jacking device 80 by four fixing buckles 833; simultaneously, the lengths of the four lifting steel ropes 821 are adjusted, and the lifting hooks 826 on the movable pulleys 825 are respectively hung with the slings 827 fixed on the frame cross beam 32 of the Nth layer standard layer; starting the four servo motor units to synchronously operate, and lifting the Nth standard layer structure unit to a height higher than that of one standard layer frame through a lifting steel cable 821; repeating the previous construction operation content until all the standard layer structural units are installed;
3-3, mounting of a first-layer structure frame: after the second-layer structural unit is installed, the second-layer structural unit is lifted to the height of the first-layer frame through the lifting steel rope 821; the lower ends of the four stand columns 21 of the first-layer frame are erected at the positions of the foundation embedded connecting members 14, the upper ends of the four stand columns 21 are aligned with the bottom ends of the stand columns 31 of the second-layer frame, and the two-layer standard-layer frame 30 is slowly lowered to complete the connection of the stand columns 21 of the first-layer frame and the stand columns 31 of the second-layer frame; the upright post of the first-layer frame is determined according to the first-layer height of a specific project building, and one of the prefabricated sectional type bolt connecting post and the prefabricated integral type long post is adopted for installation.
And step four, dismantling equipment: the jacking device 80, the jacking monitoring device 90, and the vertical guide rail 71, the guide rail connecting member 711, and the positioning slider assembly 72 in the jacking guide 70 are removed.
Step five, connecting the frame cross beams of each layer with wall connecting members 61 fixed on the existing building layer by using flexible connecting members 60; and removing parts of walls, doors and windows and the like of the existing building adjacent to the newly-built elevator shaft.
And step six, performing construction such as reinforcing a roof, each floor slab, partition walls between an elevator hoistway and an elevator hall, unit doors, an entrance rain shed, a local wall body of an existing building, a door opening and the like, and performing first-layer curtain wall installation or wall body masonry operation.
And step seven, elevator installation is carried out.
Although the invention has been described above with reference to the accompanying drawings, the invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by those of ordinary skill in the art without departing from the spirit of the invention, which fall within the protection of the invention.
Claims (3)
1. The equipment for jacking construction of the assembled externally-added elevator shaft structure comprises a reinforced concrete foundation, a prefabricated steel frame supporting structure, a light curtain wall maintenance structure (50) and a roof (10), wherein the prefabricated steel frame supporting structure comprises a first layer frame (20), N standard layer frames (30) and a top layer frame (40), and the N standard layer frames are sequentially recorded as a second layer frame, a third layer frame, a … … layer frame, an N-1 layer frame and an N layer frame from bottom to top; each layer of frame unit comprises more than four upright posts, and two adjacent upright posts in each layer of frame unit are connected through more than one frame cross beam;
jacking equipment includes jacking guider (70), jacking device (80) and jacking monitoring devices (90), its characterized in that:
the jacking guide device (70) comprises at least two vertical guide rails (71), a positioning slide block assembly (72) matched with each vertical guide rail (71) and a connecting component for connecting the vertical guide rails (71) with an external wall or a reinforced concrete beam of an existing building; the connecting member comprises a guide rail connecting member (711) and a wall connecting member (61), and the vertical guide rail (71) is connected with the wall connecting member (61) through the guide rail connecting member (711); the wall connecting member (61) is connected with the guide rail connecting member (711) and the guide rail connecting member (711) is connected with the vertical guide rail (71) through bolts, and the wall connecting member (61) is connected with an external wall or a reinforced concrete beam of the existing building through chemical bolts; the bolt holes on the wall connecting member (61), the vertical guide rail (71) and the guide rail connecting member (711) are long holes, so that the position and the verticality of the vertical guide rail (71) can be corrected conveniently; the positioning slide block assembly (72) comprises a positioning slide block (721) and a positioning buckle (722), wherein the positioning buckle (722) is used for connecting the positioning slide block (721) with each layer of frame cross beams in an elevator shaft structure;
the jacking device (80) comprises a supporting frame (81), a lifting device (82) and a lifting stabilizing device (83);
the supporting frame (81) comprises four upright posts (811), two diagonal bracing positioning strips (812) are fixed on the inner side of each upright post (811), a row of bolt holes are formed in each diagonal bracing positioning strip (812), a scissor diagonal bracing (813) is arranged between every two adjacent upright posts (811), two ends of each scissor diagonal bracing (813) are fixed on each diagonal bracing positioning strip (812) through bolts, and fastening inhaul cables (814) are connected to the tops of the four upright posts (811);
the lifting device (82) comprises four sets of lifting units, each set of lifting unit comprises a lifting steel rope (821), a servo motor unit (822), a winch (823) driven by the servo motor unit (822) and a fixed pulley (824) arranged at the top of each upright post (811), a movable pulley (825) is arranged on the lifting steel rope (821), and a lifting hook (826) and a sling (827) binding a frame beam and connecting the lifting hook (826) are arranged on the movable pulley (825); one end of the lifting steel rope (821) is fixed with a rotating shaft of the winch (823), and the other end of the lifting steel rope (821) sequentially bypasses a fixed pulley (824) and a movable pulley (825) at the top of the upright post and is then fixed on the upright post (811);
the lifting and stabilizing device (83) comprises a longitudinal sliding groove (831), a stabilizing sliding block (832) and a stabilizing buckle (833), the longitudinal sliding groove (831) is arranged on the outer side of a stand column (811) in the supporting frame, the stabilizing sliding block (832) is fixed with a frame cross beam through the stabilizing buckle (833), and the stabilizing sliding block (832) vertically slides along the longitudinal sliding groove (831) in the jacking process so as to ensure the horizontal position relation between the structural frame and the supporting frame (81) of the jacking device (80), so that stable restraining force is formed in the front-back direction and the left-right direction of the structural frame;
the jacking monitoring device (90) comprises two groups of laser transmitters (91) and laser receivers (92) which are in one-to-one correspondence; the laser transmitters (91) are fixed on the upper edges of two opposite side surfaces or two ends of the upper edge of the same side surface of the elevator hoistway top layer structural unit, the laser receivers (92) are fixed on the reinforced concrete foundation and vertically aligned with the laser transmitters (91), and the laser receivers (92) have an alarm function; in the jacking construction process, once the hoistway structure is horizontally twisted or vertically inclined, the laser beam emitted by the laser emitter (91) exceeds the receiving range of the laser receiver (92), and the laser receiver (92) alarms.
2. The equipment for jacking construction of an assembled externally-added elevator shaft structure according to claim 1, wherein the scissor diagonal brace (813) is composed of two equal-length crossed angle steels, bolt holes are formed in two ends of each angle steel, the middle of the two angle steels is connected through a bolt, and the two angle steels rotate around the bolt; the distance between two adjacent upright posts (811) is adjusted by adjusting the included angle between the crossed angle steel so as to adapt to specific spacing requirements in different projects.
3. The apparatus for jacking construction of an assembled externally applied elevator hoistway structure according to claim 1, wherein the servo motor unit (822) includes a servo motor, a controller and a decelerator, and the precision and safety of the jacking construction are ensured by controlling the servo motor to move synchronously.
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| CN111877539A (en) * | 2020-08-08 | 2020-11-03 | 郑馨滨 | Prefabricated assembly type green house building |
| CN112302292B (en) * | 2020-10-16 | 2021-11-23 | 升华电梯有限公司 | Well and building method thereof |
| CN112663784A (en) * | 2020-12-23 | 2021-04-16 | 天津大学 | Reverse top-down's modularization construction system |
| CN112744736A (en) * | 2020-12-23 | 2021-05-04 | 天津大学 | Adjusting and lifting device for double-embedded-sleeve four-connecting-rod |
| CN117266373A (en) * | 2023-10-19 | 2023-12-22 | 广州市第三市政工程有限公司 | Jacking device and vertical in-situ jacking method |
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