CN113788383B - Jacking process and jacking mechanism for existing house with additionally-installed elevator - Google Patents
Jacking process and jacking mechanism for existing house with additionally-installed elevator Download PDFInfo
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- CN113788383B CN113788383B CN202110985518.5A CN202110985518A CN113788383B CN 113788383 B CN113788383 B CN 113788383B CN 202110985518 A CN202110985518 A CN 202110985518A CN 113788383 B CN113788383 B CN 113788383B
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- steel
- elevator
- crane
- column
- steel frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0005—Constructional features of hoistways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Abstract
The invention discloses a jacking process and a jacking mechanism for an elevator additionally installed in an existing house, which are used for installing the elevator additionally installed in an old district. The main process and mechanism comprises: constructing an elevator foundation pit, embedding a steel column embedded part and a hoisting equipment embedded part; installing a scissor crane; splicing an elevator shaft steel structure, and installing an enclosure curtain wall, a roof hook beam and a roof panel; connecting a scissor type crane jacking platform beam with an elevator shaft steel structure beam; installing a jacking guide rail and a guide rail pulley connected with the jacking platform beam; jacking a first section of elevator shaft to a preset position; splicing steel columns of the next section of steel structure hoistway; the installation process is repeated to complete the installation of the whole elevator, and the method has the advantages that the steel structure, the building envelope and the electromechanical equipment of each section of elevator can be installed on the ground and then lifted to the position in one step. The method has the advantages of strong adaptability, quick construction progress, simple structure and convenient operation, and reduces high-altitude hoisting and installation operation.
Description
Technical Field
The invention belongs to the technical field of construction of steel structures and elevators in building engineering, and particularly relates to a layer-by-layer jacking construction process for installing a layer-by-layer elevator in an existing residential building on the ground layer by layer and a corresponding jacking mechanism matched with the same.
Background
In order to adapt to the social and economic development and improve the living standard of people, the state provides relevant policy and regulation for building an elevator in an old house. The roads around the old residence are narrow, the management is disordered, and a lot of construction is not changed for the elevator additional construction. The existing elevator additional construction mainly comprises two modes, one mode is the traditional construction from layer to layer, the construction progress is slow, the period is long, workers are dangerous in high-altitude operation, and inconvenience is easily caused to the lives of residents; the other mode is the assembly type integrated construction, the elevator is prefabricated in a factory in a segmented mode and is transported to the site, and the elevator is hoisted and installed through hoisting machinery.
Disclosure of Invention
The invention aims to provide a layer-by-layer jacking construction process for installing an elevator on the floor layer by layer and a corresponding matched jacking mechanism in an existing house, so as to solve various problems in the traditional elevator construction and the elevator installation problems of residential areas without transportation and hoisting conditions.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an existing house installs elevator climbing mechanism additional, includes elevator foundation ditch, scissor crane, the integral steel construction elevator well festival of successive layer concatenation, the fixed column foot steel sleeve of steel column, jacking guide rail, hoist platform roof beam and well girder steel connecting piece and guide rail pulley connecting piece, its characterized in that: the integral steel structure elevator well festival of successive layer concatenation is equipped with the steel frame roof beam for the jack-up, pre-buried column base steel sleeve built-in fitting and scissor crane built-in fitting on the elevator foundation ditch, scissor crane includes crane base roof beam, crane platform roof beam, sets up the jack-up support between crane base roof beam and crane platform roof beam, crane base roof beam installation is fixed in on the scissor crane built-in fitting, column base steel sleeve built-in fitting passes through rag bolt and steel column fixed column base steel muffjoint, the one end of jacking guide rail is installed on crane base roof beam, the other end of jacking guide rail passes through guide rail pulley connecting piece and is connected with crane platform roof beam tip, crane platform roof beam top face and the steel frame roof beam lower part for the jack-up are tight, and are fixed through girder steel connecting piece.
Preferably, the number of the integral steel structure elevator shaft sections spliced layer by layer corresponds to the number of the residential floors, and the integral steel structure elevator shaft sections comprise an elevator top layer section, an elevator standard section and an elevator bottom layer section, wherein the elevator top layer section is a first section, the elevator bottom layer section is a last section, and the rest are elevator standard sections, and the elevator top layer section comprises a top layer section steel structure, a top layer section outer enclosure curtain wall, a roof structure, an elevator hook beam and top layer section electromechanical equipment; the elevator standard section comprises an elevator bottom section and a steel frame column, the elevator standard section comprises a bottom steel structure, a standard steel structure and a standard section outer protective curtain wall, the top steel structure, the standard steel structure and the bottom steel structure all comprise steel frame columns and steel frame beams, and the elevator top section and the steel frame beams of the elevator standard section serve as the steel frame beams for lifting.
Preferably, except for the elevator bottom section, bolt holes are formed in the root parts of steel frame column columns of the elevator top section and the elevator standard section and used for temporarily fixing steel structure elevator hoistway steel column feet in the jacking process.
Preferably, plug welding holes are formed in the peripheral side wall of the steel column fixing column foot steel sleeve, wherein part of the plug welding holes correspond to bolt holes in position, the steel frame column is temporarily fixed through the temporary fixing bolts during construction of the steel column fixing column foot steel sleeve, after construction of an elevator bottom section is completed, the steel frame column and the steel column fixing column foot steel sleeve are firmly welded through plug welding seams, and the number and the size of the holes are determined according to calculation.
Preferably, the hoisting support is formed by splicing two scissor-type rod pieces through a bearing, the two scissor-type rod pieces are connected through a lower cross rod and an upper cross rod, one end of a hydraulic stay bar is connected with the lower cross rod, the other end of the hydraulic stay bar is connected with the upper cross rod, two bottom pulleys are mounted at the bottom of the hoisting support, a lower clamping groove is formed in a base beam of the crane and used as a running track of the bottom pulleys, and an upper clamping groove is formed in the lower portion of a platform beam of the crane and used as a running track of the top pulleys.
Preferably, the long round holes for installing the steel beam connecting pieces are reserved on the top surface of the crane platform beam and are located on two sides of the steel frame beam for hoisting, 2 steel frame beam for hoisting are not less than each side, bolt holes are reserved on the side surfaces of two ends of the crane platform beam, and 2 steel frame beam for hoisting are not less than each side of each end and are used for fixing the guide rail pulley connecting pieces.
Preferably, the lower end of the jacking guide rail is provided with a clamping key matched with the lower clamping groove.
Preferably, the steel beam connecting piece is an L-shaped connecting piece, one limb is fixed on the top surface of the crane platform beam through a bolt, the position of the steel frame beam for hoisting is adjusted through the long circular hole on the top surface of the crane platform beam, and the other limb tightly jacks the side surface of the steel frame beam for hoisting.
Preferably, the guide rail pulley connecting piece is a plate-type connecting piece, bolt holes are reserved in one end of the guide rail pulley connecting piece, the number and the positions of the guide rail pulley connecting piece correspond to those of bolt holes in the side of the beam end of the crane platform, two pulleys are arranged at one end of the guide rail pulley connecting piece up and down, the guide rail pulley connecting piece is connected with the crane platform beam through bolts, and the pulley at one end is clamped into the jacking guide rail.
In order to achieve the above object, another technical solution adopted by the present invention is: the jacking process for the existing house with the additionally-installed elevator is improved, and comprises the following steps:
the method comprises the following steps: the construction of the additional elevator is pre-disassembled, and the integral steel structure elevator shaft sections are spliced layer by layer, wherein the number of the sections corresponds to the number of the residential floors, and the sections comprise an elevator top section, an elevator standard section and an elevator bottom section;
step two: constructing an elevator foundation pit, and constructing and embedding a column foot steel sleeve embedded part and a scissor type crane embedded part;
step three: the steel column is fixed with a column base steel sleeve and is connected with a column base steel sleeve embedded part through a foundation bolt;
step four: installing a crane base beam of the scissor crane, enabling a long circular bolt hole reserved at each end of the lower part of the crane base beam to penetrate through a bolt of a scissor crane embedded part, adjusting the position of the crane base beam, screwing a nut after confirming that the crane base beam is correct, installing each part of the scissor crane, and enabling an upper clamping groove formed in the lower part of a crane platform beam to clamp a top pulley of a hoisting support;
step five: the method comprises the following steps of erecting a steel frame column of a top section, inserting one end provided with a bolt hole into a steel column fixing column base steel sleeve, after the steel frame column is in place, penetrating a fixing bolt through a plug welding hole of the steel column fixing column base steel sleeve and the bolt hole of a corresponding steel frame column, screwing and fixing, fixedly connecting a steel frame beam to the steel frame column, taking a lower beam in the steel frame beam as a steel frame beam for hoisting, and installing a top section outer enclosure curtain wall, a roof structure, an elevator hook beam and top section electromechanical equipment;
step six: starting the scissor crane, enabling the crane platform beam to ascend to be tightly propped against the lower surface of the lifting steel frame beam of the elevator top layer section, adjusting the position of a steel beam connecting piece, fixing the steel beam connecting piece on the top surface of the crane platform beam through a bolt, and adjusting the position of the steel frame beam for lifting through a long circular hole on the top surface of the crane platform beam;
step seven: clamping a clamping key of the jacking guide rail into a lower clamping groove to complete the fixation of the jacking guide rail, installing a guide rail pulley connecting piece, and clamping a guide rail pulley into the jacking guide rail to complete the installation of the jacking guide rail;
step eight: jacking the elevator shaft of the top section of the elevator to a preset position, and enabling the guide rail pulley to ascend along with the crane platform beam;
step nine: welding and splicing a steel frame column of the elevator standard knot, slowly falling back the scissor crane after the completion, allowing the steel frame column to fall and insert a steel column fixing column base steel sleeve, installing a temporary fixing bolt, and continuously falling back the scissor crane to a low position after the completion;
step ten: welding or bolting a steel structure beam of the elevator standard knot, installing a containment curtain wall and electromechanical equipment, jacking a crane platform beam to be tightly propped against the lower surface of a hoisting steel frame beam of the elevator standard knot, adjusting the position of a steel beam connecting piece, fixing the hoisting steel frame beam, screwing off a temporary fixing bolt, and jacking the elevator standard knot to a preset position;
step eleven: and repeating the ninth step and the tenth step until the steel frame column of the elevator bottom section is installed, then firmly welding the steel frame column and the steel column fixing column foot steel sleeve through plug welding, withdrawing the jacking guide rail and the scissor type crane in sequence, then installing the enclosure curtain wall and the electromechanical equipment, and finishing the installation.
Preferably, in the fifth step and the ninth step, the steel column fixing column base steel sleeve is used as a temporary column base of the steel column in the jacking process and finally used as a column base of the whole steel frame column additionally provided with the elevator, and the size of the steel column fixing column base steel sleeve is slightly larger than the section of the steel frame column so as to ensure that the steel frame column can be inserted into the steel column fixing column base steel sleeve.
The invention effectively solves a plurality of problems of building elevators in old communities, and has the advantages that the steel structure, the building envelope and the electromechanical equipment of each section of elevator can be installed on the ground and then can be jacked in place once. The method is not limited by various construction sites, has strong adaptability and quick construction progress, reduces high-altitude hoisting and installation operation, reduces the danger of high-altitude operation of workers, and has simple structure and convenient operation.
Drawings
FIG. 1 is a side view of the connecting shaft of the scissor crane with the jacking guide rail and the steel frame beam;
fig. 2 is an isometric view of the main structure of the additional elevator of the present invention;
FIG. 3 is a schematic view of a socle steel sleeve embedment of the present invention;
FIG. 4 is a schematic view of a scissor crane embedment of the present invention;
FIG. 5 is a disassembled view of the construction section of the elevator shaft with the integral steel structure spliced layer by layer according to the invention;
FIG. 6 is a schematic view of the scissor crane base beam of the present invention;
FIG. 7 is a schematic view of a steel column shoe bolt hole of the present invention;
FIG. 8 is a schematic view of a steel column fixed leg steel sleeve of the present invention;
FIG. 9 is a schematic view of temporary connection of steel frame columns according to the present invention;
FIG. 10 is a schematic view of the fixed connection of the steel frame columns of the present invention;
FIG. 11 is a schematic view of a scissor crane platform beam of the present invention;
FIG. 12 is a schematic view of a jacking guide rail of the present invention;
FIG. 13 is a schematic view of a steel beam connection of the present invention;
FIG. 14 is a schematic view of the connection between a crane platform beam and a steel frame crane beam according to the present invention;
FIG. 15 is a schematic view of a guide rail pulley connection of the present invention;
FIG. 16 is a schematic view of the connection of the crane platform beam and the jacking guide rails of the present invention;
fig. 17 is a schematic diagram of the jacking process of the existing house with the elevator installed.
In the figure: 1, an elevator foundation pit; 2-side wall of elevator foundation pit; 4-steel frame column; 5-steel frame beam; 51-a steel frame beam for hoisting; 7-scissor cranes; 71-crane base beam; 72-crane platform beam; 721-long circular holes; 722-bolt holes; 73-hydraulic stay bar; 731-bottom rail; 732-upper crossbar; 74-hoisting support; 75-bottom pulley; 76-top pulley; 8, jacking a guide rail; 9-elevator top floor section; 10-standard section of elevator; 11-elevator floor section; 12, fixing a steel column with a column base steel sleeve; 121-plug welding holes; 122-temporary fixing bolt; 13-embedded parts of column shoe steel sleeves; 14-scissor crane embedded parts; 15-steel beam connecting piece; 16-guide rail pulley connection; 161-a pulley; 81-snap key; 82, a lower clamping groove; and 83, an upper clamping groove.
Detailed Description
The jacking process and the jacking mechanism of the elevator added to the existing house are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the elevator jacking mechanism additionally installed in the existing house comprises an elevator foundation pit 1, a scissor-type crane 7, an integral steel structure elevator shaft section spliced layer by layer, a steel column fixing column foot steel sleeve 12, a jacking guide rail 8, a steel beam connecting piece 15 of a crane platform beam and a shaft steel beam, and a guide rail pulley connecting piece 16.
As shown in fig. 2, the elevator foundation pit 1 and the elevator foundation pit side wall 2 thereof can be completed by adopting a cast-in-place concrete structure or a prefabricated concrete structure, a column foot steel sleeve embedded part 13 and a scissor type crane embedded part 14 are embedded in the elevator foundation pit 1, the thickness of the elevator foundation pit side wall 2 is more than or equal to the width of the column foot steel sleeve embedded part 13 and the width of the scissor type crane embedded part 14, the elevator foundation pit side wall 2 can reserve an inserted bar or a steel bar connector according to whether an anti-collision wall is arranged at the bottom of an additionally installed elevator, the column foot steel sleeve embedded part 13 is shown in fig. 3, and the scissor type crane embedded part 14 is shown in fig. 4.
The number of the residential floors corresponding to the number of the integral steel structure elevator shaft sections spliced layer by layer comprises an elevator top layer section 9, an elevator standard section 10 and an elevator bottom layer section 11, as shown in fig. 5, wherein the elevator top layer section 9 is a first section, the elevator bottom layer section 11 is a last section, and the rest of the sections are the elevator standard section 10, the elevator top layer section 9 comprises a top layer section steel structure, a top layer section outer enclosure curtain wall, a roof structure, an elevator hook beam and top layer section electromechanical equipment, the elevator standard section 10 comprises a standard section steel structure and a standard section outer enclosure curtain wall, the elevator top layer section 9 and the elevator standard section 10 both use a frame beam of a steel structure as a steel frame beam 51 for hoisting, the strength of the steel frame beam still needs to meet the strength requirement during jacking, and the elevator bottom layer section 11 is the last section and only needs to be spliced on the ground.
As shown in fig. 6, scissor crane 7 includes two crane base beams 71 at the bottom, two crane platform beams 72 at the top, two pairs of hydraulic support rods 73 and two pairs of lifting supports 74, which are disposed between crane base beams 71 and crane platform beams 72, wherein each end of crane base beams 71 is fixed on scissor crane embedded parts 14 through 4 high-strength bolts, and each end of the lower portion of crane base beams 71 is reserved with 4 long circular bolt holes, which facilitates position adjustment when crane base beams 71 are installed. One end of the jacking guide rail 8 is arranged in a lower clamping groove 82 of the crane base beam 71, the other end of the jacking guide rail 8 is connected with the end part of the crane platform beam 72 through a guide rail pulley connecting piece 16, and the top surface of the crane platform beam 72 is tightly propped against the lower part of the steel frame beam for hoisting and is fixed through a steel beam connecting piece 15.
As shown in fig. 7, except for the elevator bottom section 11, bolt holes 101 are formed in the root parts of the steel frame column of the elevator top section 9 and the elevator standard section 10, and are used for temporarily fixing steel structure elevator hoistway steel column bases in the jacking process, and the bolt holes 101 correspond to the positions of the local plug welding holes 121.
As shown in fig. 8, the steel column base steel sleeve embedded part 13 is connected with the steel column fixing column base steel sleeve 12 through anchor bolts, plug welding holes 121 are formed in the peripheral side wall of the steel column fixing column base steel sleeve 12, and the plug welding holes 121 are mechanically formed in a factory, wherein a part of the plug welding holes 121 correspond to the positions of the bolt holes 101, the steel frame column 4 is temporarily fixed through temporary fixing bolts 122 during construction of the steel column fixing column base steel sleeve 12, as shown in fig. 9, after construction of the elevator floor section 11 is completed, the steel frame column 4 and the steel column fixing column base steel sleeve 12 are firmly welded through plug welding seams, and as shown in fig. 10, the number and the size of the holes are determined according to calculation.
As shown in fig. 1, the lifting support 74 is formed by splicing two scissor-type rod members through bearings, the rod members can be rectangular steel pipes or other shaped steel, the two scissor-type rod members are connected with each other through a lower cross bar 731 and an upper cross bar 732, one end of a hydraulic brace 73 is connected with the lower cross bar 731, the other end of the hydraulic brace 73 is connected with the upper cross bar 732, two ends of the two scissor-type rod members are respectively provided with a top pulley 76 and a bottom pulley 75, a crane base beam 71 is provided with a lower clamping groove 82 as a running track of the bottom pulley 75, the lower part of the crane platform beam 72 is provided with an upper clamping groove 83 as a running track of the top pulley 76, and the lifting support 74 is fixed between the crane platform beam 72 and the crane base beam 71 through the bottom pulley 75 and the top pulley 76.
The top surface of the crane platform beam 72 is provided with long round holes 721 for mounting the steel beam connectors 15, as shown in fig. 11, the long round holes are located on two sides of the crane steel frame beam 51, the number of each side is not less than 2, bolt holes 722 are reserved on two side surfaces of two ends of the crane platform beam 72, the number of each side is not less than 2, and the crane platform beam is used for fixing the guide rail pulley connectors 16.
As shown in fig. 12, a locking key 81 matched with the lower locking groove 82 is arranged at the lower end of the jacking guide rail 8, the length of the locking key 81 is equal to the height of the section of the jacking guide rail 8, and preferably, the jacking guide rail 8 can be in an i-shape.
As shown in fig. 13, the steel beam connecting member 15 is an L-shaped connecting member, one limb is fixed on the top surface of the crane platform beam 72 through a bolt, the position of the steel frame beam 51 for lifting is adjusted through the long round hole 721 on the top surface of the crane platform beam 72, and the other limb is tightly pressed against the side surface of the steel frame beam 51 for lifting, as shown in fig. 14, preferably, a rubber layer is added on the contact surface between the steel beam connecting member 15 and the steel frame beam 51 so as not to realize the flexible connection of the contact surface.
As shown in fig. 15, the guide rail pulley connecting piece 16 is a plate-type connecting piece, one end of the plate-type connecting piece is provided with bolt holes, the number and the positions of the bolt holes are corresponding to the positions of bolt holes 722 at the beam end side of the crane platform, two pulleys 161 are arranged at the upper end and the lower end of the other end of the plate-type connecting piece, the guide rail pulley connecting piece 16 is connected with the end part of the crane platform beam 72 through bolts, and the pulley 161 at one end is clamped into the jacking guide rail 8, as shown in fig. 16.
According to the jacking mechanism, the jacking process comprises the following steps as shown in figure 17.
The method comprises the following steps: before formal construction, construction pre-dismantling preparation work for installing the elevator is well done, as shown in fig. 5, the operation of installing the elevator is carried out after the floor number, the building outer enclosure and electromechanical equipment are determined, and the installed elevator is dismantled into a plurality of sections of integral steel structure elevator shafts according to the requirements of jacking construction technology. The number of the sections corresponds to the number of the residential floors, and the residential floors comprise an elevator top floor section 9, an elevator standard section 10 and an elevator bottom floor section 11. Except for the bottom layer section 11, the steel structure, the building outer enclosure and the electromechanical equipment of each section can be installed on the ground at one time. The elevator top layer section 9 and the elevator standard section 10 both use the steel frame beam 4 as the steel frame beam 51 for lifting, whether the bearing capacity of the elevator steel frame beam 4 additionally installed meets the bearing capacity requirement during jacking needs to be rechecked in the splitting process, and if the bearing capacity does not meet the requirement, the section or the wall thickness of the steel frame beam 4 needs to be increased.
Step two: and (5) excavating a foundation trench and inspecting the trench. After the groove is tested to the ground, clear away superficial loose soil and disturbed soil, do not keep ponding, carry out the bed course concrete construction immediately, the bed course concrete vibrates closely knit, surfacing. After the bed course is poured and the concrete reaches 1.2MPa, the surface elastic line is used for binding the steel bars of the elevator foundation pit 1, and meanwhile, the construction pre-burying of the column base steel sleeve embedded part 13 and the scissor type crane embedded part 14 is carried out. The plane position of the embedded part 13 of the column foot steel sleeve is consistent with the position of the steel frame column 4 for installing the elevator. And in the paying-off process of the embedded part, putting points on the definite coordinate points in the construction drawing by using the measured control network measurement result. And then setting the positions of embedded parts according to the relative relation between the embedded parts 13 of the column foot steel sleeves and the embedded parts 14 of the scissor type crane and the control points shown on the construction drawing. Before concrete pouring, the position of the embedded part is accurately adjusted and fixed, the position of the embedded part is retested by adopting a total station during construction, and the verticality of the embedded part is controlled by adopting a horizontal ruler to prevent the embedded part from inclining. And after the position of the embedded part is adjusted in place, the embedded part is welded or bound and fixed with the upper main rib of the side wall 2 of the elevator foundation pit, so that the position of the poured concrete is ensured. And after the steel bars are bound, retesting the concrete again before pouring the concrete, pouring the concrete after the retest is correct, and observing by a special person during pouring. And backfilling the periphery of the elevator foundation pit 1 after pouring.
Step three: and installing a steel column fixing column foot steel sleeve 12. The steel column fixed column foot steel sleeve 12 is used as a temporary column foot of the steel frame column 4 of each elevator section in jacking operation, and finally used as a column foot of the whole steel frame column 4 additionally provided with the elevator, and the size of the steel column fixed column foot steel sleeve 12 is slightly larger than the section of the steel frame column 4 so as to ensure that the steel frame column 4 can be inserted into the steel column fixed column foot steel sleeve 12. And (3) utilizing the measured control network measurement result to place a point on a central coordinate point of the steel frame column which is clear in the construction drawing, and popping up the installation position of the steel column fixed column foot steel sleeve 12 on the column foot steel sleeve embedded part 13 according to the relative position relation of the steel column fixed column foot steel sleeve 12 and the steel frame column 4. Before the steel column fixed column base steel sleeve 12 is welded firmly, the position of the steel column fixed column base steel sleeve 12 is accurately adjusted, and a total station is adopted to retest the position of the steel column fixed column base steel sleeve 12 during construction. And after the retest is correct, the column base steel sleeve embedded part 13 is welded and connected.
Step four: the scissor crane 7 checks the quality of each part after being transported to the site, and each part is gradually installed after no quality problem exists. Firstly, two crane base beams 71 at the bottom of the scissor crane 7 are installed, 4 long circular bolt holes reserved at each end of the lower part of each crane base beam 71 penetrate through 4 high-strength bolts of the scissor crane embedded part 14, the positions of the crane base beams 71 are adjusted, nuts are screwed after the correct position is confirmed, and the nuts adopt double nuts. Two pairs of hoisting supports 74 are installed, the hoisting supports 74 are formed by splicing two scissor type rod members through bearings, and two bottom pulleys 75 installed at the bottom of each pair of hoisting supports 74 are installed in a lower clamping groove 82 on a crane base beam 71 to serve as running rails of the bottom pulleys 75. The hydraulic support rods 73 are installed, the hydraulic support rods 73 serve as power equipment and are installed between the hoisting supports 74, one ends of the hydraulic support rods 73 are connected with the lower cross bar 731, and the other ends of the hydraulic support rods 73 are connected with the upper cross bar 732. Two top pulleys 76 arranged at the top of each pair of hoisting supports 74 are arranged on an upper clamping groove 83 formed in the lower part of the crane platform beam 72 and used as a running track of the top pulleys 76. And carrying out idle load debugging after the whole equipment is installed, and carrying out the next process after debugging is error-free.
Step five: the top layer segments 9 are spliced. Firstly, 4 steel frame columns 4 of the top layer section 9 are erected, one end provided with the bolt hole 101 is inserted into the steel column fixing column foot steel sleeve 12, and after the steel column fixing column foot steel sleeve is in place, the fixing bolt 122 penetrates through the plug welding hole 121 of the steel column fixing column foot steel sleeve 12 and the corresponding bolt hole 101 of the steel frame column 4 to be screwed and fixed. The steel frame beams 5, including the steel frame beams 51 for hoisting, are then welded or bolted. And installing a peripheral curtain wall, a roof structure, an elevator hook beam and top layer 9 electromechanical equipment on the top layer 9, and strictly controlling the installation quality and the installation precision of each component in the installation process. And after the installation is finished, checking and accepting according to drawings, specifications and regulations of corresponding specialties, and performing the next procedure after the checking and accepting are qualified.
Step six: the two hydraulic support rods 73 are synchronously pressurized, the crane platform beam 72 slowly rises to be tightly propped against the lower surface of the steel frame beam 51 for hoisting of the top floor section 9 of the elevator, and then the pressurization is stopped. The bolt holes of the two L-shaped steel beam connecting pieces 15 are aligned with the long round holes 721 on the upper surface of the crane platform beam 72, the vertical limbs of the steel beam connecting pieces 15 are tightly propped against the side surface of the hoisting steel frame beam 51 by adjusting the positions of the steel beam connecting pieces 15, and fixing bolts are installed and screwed tightly.
Step seven: and (4) installing the jacking guide rail 8. Erecting each jacking guide rail 8, aligning a clamping key 81 of each jacking guide rail 8 with a lower clamping groove 82 on the crane base beam 71, and then pushing the clamping key into the lower clamping groove 82 to finish the fixation of the jacking guide rails 8. The guide rail pulley connection 16 is next installed. Firstly, the guide rail pulley 161 is clamped into the jacking guide rail 8, moves up and down to the end part of the crane platform beam 72, aligns the bolt hole on one side of the guide rail pulley piece 16 with the bolt hole 722 of the crane platform beam 72, installs the fixing bolt, and screws up and fixes. The position of the jacking guide rail 8 is adjusted forwards and backwards, so that the guide rail pulley 161 is pressed against the inner surface of the jacking guide rail 8. In the jacking process, the inner surface is compressed tightly, so that a stable support and a slideway can be provided for the jacking platform.
Step eight: and the two hydraulic support rods 73 are synchronously and slowly pressurized to carry out belt loading trial jacking, after all the systems are normal, the oil pressure of the hydraulic support rods 73 is increased to slowly jack the top layer section 9 of the elevator to a preset position, and the guide rail pulley 161 rises along with the platform beam 72 of the crane.
Step nine: after the elevator top floor section 9 reaches a preset position, the steel frame column 4 of the elevator standard section 10 is erected, and the steel frame column 4 of the elevator standard section 10 is connected with the steel frame column 4 of the elevator top floor section 9 through groove butt welding. And slowly returning the two hydraulic support rods 73 after the welding seam is cooled, slowly lowering the scissor crane 7, allowing the steel frame column 4 of the elevator standard knot 10 to fall and insert the steel column fixing column foot steel sleeve 12, installing the temporary fixing bolt 122, and continuously returning the scissor crane 7 to the low position after the completion.
Step ten: welding or bolting the steel structure beam 5 of the elevator standard knot 10, installing a containment curtain wall and electromechanical equipment, lifting the crane platform beam 72 to tightly prop against the lower surface of the lifting steel frame beam 51 of the elevator standard knot 10, adjusting the position of the steel beam connecting piece 15, fixing the lifting steel frame beam 51, screwing off the temporary fixing bolt 122, and starting up to lift the elevator standard knot 10 to a preset position.
Step eleven: and repeating the ninth step and the tenth step until the steel frame column 4 of the elevator bottom section 11 is completely installed, then firmly welding the steel frame column 4 and the steel column fixing column foot steel sleeve 12 through plug welding, withdrawing the jacking guide rail 8, the crane platform beam (72), the hoisting support 74 and the crane base beam 71 in sequence, then installing the enclosure curtain wall and the electromechanical equipment, and finishing the installation.
The invention effectively solves a plurality of problems of building elevators in old communities, and has the advantages that the steel structure, the building envelope and the electromechanical equipment of each section of elevator can be installed on the ground and then can be jacked in place once. The method is not limited by various construction sites, has strong adaptability and quick construction progress, reduces high-altitude hoisting and installation operation, reduces the danger of workers in high-altitude operation, and has simple structure and convenient operation. Therefore, the method has good application prospect in practical engineering.
The above examples are merely illustrative of the basic principles, installation procedures and other technical solutions of the present invention, and are not limiting, and it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention. All equivalent changes and approximate substitutions made according to the contents described in the patent protection scope of the present invention should be covered in the claims of the present invention.
Claims (2)
1. A jacking process for an existing residential add-on elevator adopts an elevator foundation pit (1), a scissor type crane (7), a layer-by-layer spliced integral steel structure elevator well section, a steel column fixed leg steel sleeve (12), a jacking guide rail (8), a steel beam connecting piece (15) and a guide rail pulley connecting piece (16), wherein the layer-by-layer spliced integral steel structure elevator well section is provided with a hoisting steel frame beam (51), a column leg steel sleeve embedded part (13) and a scissor type crane embedded part (14) are embedded on the elevator foundation pit (1), the scissor type crane (7) comprises a crane base beam (71), a crane platform beam (72), a hoisting support (74) arranged between the crane base beam (71) and the crane platform beam (72), the hoisting support (74) is formed by splicing two scissor type rod pieces through bearings, the two scissor type rod pieces are connected through a lower cross rod (731) and an upper cross rod (732), one end of a hydraulic brace (73) is connected with the lower cross rod (731), the other end of the hydraulic brace (73) is connected with an upper cross rod (732), two ends of the two scissor type rod pieces are respectively provided with a scissor type rod pieces (731) and the upper cross rod (76), the pulley (75) is used as a track pulley groove (82), and the top of the upper rail (75) of the crane base pulley (75) is arranged as a track pulley (75), the crane support (74) is fixed between a crane platform beam (72) and a crane base beam (71) through a bottom pulley (75) and a top pulley (76), the crane base beam (71) is fixedly installed on a scissor type crane embedded part (14), a column foot steel sleeve embedded part (13) is connected with a steel column fixed column foot steel sleeve (12) through foundation bolts, one end of a jacking guide rail (8) is installed on the crane base beam (71), the other end of the jacking guide rail (8) is connected with the end part of the crane platform beam (72) through a guide rail pulley connecting part (16), the top surface of the crane platform beam (72) is tightly propped against the lower part of the crane steel frame beam (51) and is fixed through a steel beam connecting part (15), a long circular hole (721) for installing the steel beam connecting part (15) is arranged at the joint of the crane platform beam (72) and the crane steel frame beam (51), bolt holes (722) are reserved on the side surfaces of the two ends of the crane platform beam (72) and are used for fixing the guide rail pulley connecting part (16), the guide rail pulley connecting part (16) is a plate type frame connecting part, bolt hole (161) is arranged on the two ends of the crane platform beam, and the crane platform beam (161) and the crane platform connecting part corresponds to the position of the crane platform (16), the pulley (161) is clamped into the jacking guide rail (8), so that the crane platform beam (72) can slide along the jacking guide rail (8) through the guide rail pulley connecting piece (16), the jacking guide rail (8) is clamped into the lower clamping groove (82) through the clamping key (81) and is installed on the crane base beam (71), the steel beam connecting piece (15) is an L-shaped connecting piece, two L-shaped connecting pieces tightly support the steel frame beam (51) for lifting, the position of the steel frame beam (51) is fixed through a bolt on a long hole (721) on the top surface of the crane platform beam (72), plug welding holes (121) are formed in the peripheral side wall of the steel column fixing column foot steel sleeve (12), wherein part of the plug welding holes (121) correspond to the positions of bolt holes (101), the steel column fixing column foot steel sleeve (12) is temporarily fixed through a temporary fixing bolt (122) during construction, after the construction of the elevator bottom layer section (11) is completed, the steel frame column (4) and the steel frame column fixing column (12) are welded with the steel frame section (9) and the elevator shaft section (11), wherein the elevator shaft section (9) comprises the first elevator shaft section (10) and the elevator shaft section (9) of the top layer and the elevator shaft section (10) of the elevator shaft section (9) of the elevator shaft section (10) of the elevator shaft section (9), the elevator top layer section (9) comprises a top layer section steel structure, a top layer section outer enclosure curtain wall, a roof structure, an elevator hook beam and top layer section electromechanical equipment; elevator standard festival (10) are including standard festival steel construction, the outer enclosure curtain wall of standard festival, and top layer festival steel construction and standard festival steel construction all include steel frame post (4) and steel frame roof beam (5), steel frame roof beam (5) are as hoisting steel frame roof beam (51), and bolt hole (101) have all been opened to every side of steel frame post (4) column root of elevator top layer festival (9), elevator standard festival (10) for the column base of jacking in-process temporary fixation steel frame post (4), its characterized in that, the jacking technology includes following step:
the method comprises the following steps: the integral steel structure elevator shaft section is spliced layer by layer in an additionally-built elevator construction pre-splitting manner, wherein the elevator top layer section (9) is a first section, the elevator bottom layer section (11) is a last section, and the rest are elevator standard sections (10);
step two: constructing an elevator foundation pit (1), and constructing and embedding a column base steel sleeve embedded part (13) and a scissor type crane embedded part (14);
step three: the steel column fixing column base steel sleeve (12) is connected with a column base steel sleeve embedded part (13) through foundation bolts;
step four: the method comprises the following steps that a long circular bolt hole reserved at each end of the lower portion of a crane base beam (71) penetrates through a bolt of a scissor type crane embedded part (14), the position of the crane base beam (71) is adjusted, and a scissor type crane (7) is installed and fixed;
step five: inserting a steel frame column (4) of a top layer section (9) into a steel column fixing column base steel sleeve (12), penetrating a fixing bolt (122) through a plug welding hole (121) of the steel column fixing column base steel sleeve (12) and a bolt hole (101) of a corresponding steel frame column (4), screwing and fixing, fixedly connecting a steel frame beam (5) to the steel frame column (4), taking a lower beam in the steel frame beam (5) as a steel frame beam (51) for hoisting, and installing a peripheral protective curtain wall, a roof structure, an elevator hook beam and top layer section (9) electromechanical equipment of the top layer section (9);
step six: starting the scissor type crane (7), enabling the crane platform beam (72) to ascend to be tightly propped against the lower surface of the lifting steel frame beam (51) of the elevator top-level section (9), adjusting the position of the steel beam connecting piece (15), fixing the steel beam connecting piece on the top surface of the crane platform beam (72) through a bolt, and adjusting the position of the lifting steel frame beam (51) through the long round hole (721) in the top surface of the crane platform beam (72);
step seven: the jacking guide rail (8) is fixed by clamping a clamping key (81) of the jacking guide rail (8) into a lower clamping groove (82), a guide rail pulley connecting piece (16) is installed, and a guide rail pulley (161) is clamped into the jacking guide rail (8), so that the jacking guide rail (8) is installed;
step eight: starting a scissor type crane (7), jacking an elevator shaft of an elevator top layer section 9 to a preset position, and enabling a guide rail pulley (161) to ascend along with a crane platform beam (72);
step nine: splicing the steel frame column (4) of the elevator standard knot (10), falling the scissor crane (7) after completion, allowing the steel frame column (4) to fall and insert the steel column fixing column base steel sleeve (12), installing a temporary fixing bolt (122), and continuing to fall the scissor crane (7) to a low position after completion;
step ten: installing a steel structure beam (5) of an elevator standard knot (10), installing a containment curtain wall and electromechanical equipment, lifting a crane platform beam (72) to be tightly propped against the lower surface of a lifting steel frame beam (51) of the elevator standard knot (10), adjusting the position of a steel beam connecting piece (15), fixing the lifting steel frame beam (51), screwing off a temporary fixing bolt (122), and pressurizing and jacking the elevator standard knot (10) to a preset position by using a hydraulic support rod (73);
step eleven: and repeating the ninth step and the tenth step until the steel frame column (4) of the elevator bottom section (11) is completely installed, then firmly welding the steel frame column (4) and the steel column fixing column foot steel sleeve (12) through plug welding, withdrawing the jacking guide rail (8) and the scissor crane (7) in sequence, then installing the enclosure curtain wall and the electromechanical equipment, and finishing the installation.
2. The jacking process for the existing house installed elevator according to claim 1, wherein in the fifth step and the ninth step, the steel column fixed column base steel sleeve (12) is used as a temporary column base of the steel column in the jacking process and finally as a column base of the steel frame column (4) of the whole installed elevator, and the size of the steel column fixed column base steel sleeve (12) is slightly larger than the section of the steel frame column (4) so as to ensure that the steel frame column (4) can be inserted into the steel column fixed column base steel sleeve (12).
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| CN109138173A (en) * | 2018-10-24 | 2019-01-04 | 浙江精工钢结构集团有限公司 | A kind of top supernumerary segment hydraulic lifting rapid constructing method |
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| JP3297212B2 (en) * | 1994-07-21 | 2002-07-02 | 株式会社巴コーポレーション | Construction method of tower-like structure and supporting structure used for it |
| JP3186519B2 (en) * | 1995-07-04 | 2001-07-11 | 株式会社大林組 | Lift-up method |
| CN201825694U (en) * | 2010-09-28 | 2011-05-11 | 石家庄中煤装备制造股份有限公司 | Lifting device for drilling machine |
| CN108532769B (en) * | 2018-06-29 | 2020-06-12 | 华城(天津)建筑科技有限公司 | Jacking construction method of assembled additional elevator shaft structure |
| CN108928783B (en) * | 2018-08-30 | 2024-02-20 | 青岛长永机械工程有限公司 | Shear type climbing hoisting machine for existing building additionally installed elevator |
| CN110182671A (en) * | 2019-05-26 | 2019-08-30 | 王琪 | The full assembled hoistway and its installation method of existing building installation elevator |
| CN110206155B (en) * | 2019-05-31 | 2021-06-15 | 浙江精工钢结构集团有限公司 | Bottom-added hydraulic jacking system and construction method |
| CN211712554U (en) * | 2019-12-10 | 2020-10-20 | 北京北电科林电子有限公司 | Mechanism for eliminating platform lifting displacement |
| CN111169887A (en) * | 2020-02-13 | 2020-05-19 | 黄河科技学院 | Lifting device for warehouse goods shelves |
| CN111646387A (en) * | 2020-06-16 | 2020-09-11 | 山东建筑大学 | Rapid moving and mounting platform for standard knot of existing building quick-mounting steel structure elevator |
| CN212799448U (en) * | 2020-08-31 | 2021-03-26 | 昆山普罗虎贲升降技术有限公司 | Lifting platform with auxiliary guide |
| CN213679613U (en) * | 2020-11-18 | 2021-07-13 | 海沃机械（中国）有限公司 | Lifting system |
| CN113152664A (en) * | 2021-03-26 | 2021-07-23 | 中核建研城市更新有限公司 | Steel structural framework and modularized additional elevator |
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| CN109138173A (en) * | 2018-10-24 | 2019-01-04 | 浙江精工钢结构集团有限公司 | A kind of top supernumerary segment hydraulic lifting rapid constructing method |
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