CN104261232B - Lifting device attached to special-shaped section and installation method thereof - Google Patents

Abstract

The present invention relates to a lifting device that is attached to a profiled cross-section. The lifting device is attached to the profiled cross-section. The mounting structure includes: an attachment base, erected on the side of the profiled cross-section and connected to the profiled cross-section support; and an elevator, including a tower column and an elevator that moves up and down along the tower column. The tower column is erected on the side of the attachment base and connected to the attachment base support. The attachment base is supported and installed on the profiled cross-section, and the attachment base provides an attachment base for the elevator, allowing the elevator to be applied to profiled cross-sections and provide transportation services for the profiled cross-sections.

Description

Lifting device attached to special-shaped section and installation method thereof

technical field

The invention relates to the field of building structures, in particular to a lifting device attached to a special-shaped section and an installation method thereof.

Background technique

In building construction, in order to facilitate the transportation of construction personnel and materials, an elevator is generally installed outside the main body of the building structure, and the elevator is connected to the main body of the building structure through a wall-attached device. The main body of the building structure to which the elevator is attached belongs to a regular structure, and embedded parts are arranged on the main body of the building structure, and then the wall attachment device and the embedded parts are welded and fixed, so that the elevator is installed. For special-shaped sections, that is, irregular structures or inclined cliffs, the wall attachment device of the elevator cannot be attached to the special-shaped section due to the limited length of the attached wall, making it a problem to use the elevator at the special-shaped section.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art, provide a lifting device and method attached to a special-shaped section, and solve the problem that the elevator cannot be attached to the special-shaped section in the prior art.

The technical scheme for realizing the above-mentioned purpose is:

The invention is a lifting device attached to a special-shaped section, comprising:

an attachment foundation, erected on the side of the special-shaped section and connected with the support of the special-shaped section; and

The elevator includes a tower column and an elevator that moves up and down along the tower column, and the tower column is erected on the side of the attached foundation and is supported and connected with the attached foundation.

The attachment foundation is set at the special-shaped section, and the attachment foundation is used to provide the attachment foundation for the elevator, so that the elevator can be applied to the special-shaped section and provide transportation services for the special-shaped section.

A further improvement of the lifting device attached to the special-shaped section of the present invention is that it includes two lifts, which are symmetrically arranged on both sides of the attachment base. Two elevators are arranged symmetrically, so that the force on both sides of the attached foundation is balanced, and the vertical stability of the attached foundation is better maintained.

The further improvement of the lifting device attached to the special-shaped section of the present invention is that a steel platform is set up between the attachment foundation and the top of the special-shaped section; reinforcement plates are provided on the outer walls around the top of the attachment foundation, and the attachment A supporting steel plate is laid on the foundation, and a plurality of stiffening plates are arranged between the supporting steel plate and the reinforcing plate; a pre-embedded steel plate is provided on the top of the special-shaped section, and the pre-embedded steel plate and the supporting steel plate are erected There are steel beams; platform steel plates are laid on the steel beams to form the steel platform. A steel platform is set on the top of the special-shaped section to provide a construction channel to the elevator. Steel beams are erected on the attached foundation, so that the attached foundation only bears vertical pressure, providing the safety and stability of the attached foundation. Such a connection method makes the stress diffuse and transmit downwards sequentially, effectively solving the situation of stress failure at the connection node.

The further improvement of the lifting device attached to the special-shaped section of the present invention is that the tower column is fixed with wall attachments at intervals, the attachment base is provided with a fixing piece corresponding to the wall attachment, and the fixing piece is provided with connecting ears plate, and the connecting ear plate is fixedly connected with the wall attachment.

The further improvement of the lifting device attached to the special-shaped section of the present invention is that the fixing part includes two steel parts and a plurality of fasteners, and the steel parts are respectively arranged on the attachment base and connected to the side of the wall attachment , the shaped steel parts are provided with connecting ear plates; the two ends of the fasteners are provided with screw rods, and are placed between the two shaped steel parts, and the screw rods respectively pass through the shaped steel parts and pass through the nuts Screw fast. The fasteners tighten and fix the shaped steel pieces on both sides to the outside of the attached foundation, and at the same time, the fasteners also play a supporting role for the shaped steel pieces at both ends.

The further improvement of the lifting device attached to the special-shaped section of the present invention is that a wall-attached device is fixed on the attachment base, and the special-shaped section is anchored with a plurality of anchors at the connection with the wall-attached device, and a plurality of the anchors An anchoring plate is fixed on it, and a wall-attached seat is provided on the anchoring plate, and the wall-attached seat is fixedly connected with the end of the wall-attached device.

The present invention is an installation method of a lifting device attached to a special-shaped section, comprising:

setting on the ground an attachment foundation connected with the support of the special-shaped section; and

An elevator is erected, the tower column of the elevator is erected on the ground, supported and connected to the attached foundation, the elevator of the elevator is installed on the tower column, so that the elevator moves up and down along the tower column.

The further improvement of the installation method of the lifting device attached to the special-shaped section of the present invention is that it also includes setting a steel platform on the top of the attached foundation and the top of the special-shaped section:

Fixing and connecting reinforcing plates to the outer walls around the top of the attached foundation;

Laying and fixing supporting steel plates on the attached foundation;

A plurality of stiffening plates are arranged between the supporting steel plate and the reinforcing plate;

A pre-embedded steel plate is arranged on the top of the special-shaped section;

erecting steel beams on the embedded steel plate and the supporting steel plate,

A platform steel plate is laid on the steel beam, and the platform steel plate is connected and fixed to the steel beam to form the steel platform.

The further improvement of the installation method of the lifting device attached to the special-shaped section of the present invention lies in that the supporting connection of the tower column to the attached foundation includes:

Install wall attachments at intervals on the tower;

A fixing piece is set on the attachment base corresponding to the position of the wall attachment, and a connecting ear plate is set on the fixing piece;

The wall attachment is fixedly connected to the connecting ear plate.

The further improvement of the installation method of the lifting device attached to the special-shaped section of the present invention lies in that setting the fixing piece on the attachment basis corresponding to the position of the wall attachment includes:

Provide angle steel, weld the screw to both ends of the angle steel respectively and expose a section of screwed end;

The angle steel is arranged on the attachment foundation, and the end of the angle steel corresponds to the position where the wall attachment is connected;

Provide a channel steel, the channel steel is provided with a through hole corresponding to the screw rod, and a connecting ear plate is provided corresponding to the position of the wall attachment;

The screw rod is passed through the corresponding through hole on the channel steel, and the two channel steels are respectively fastened to the two ends of the angle steel by screwing the screwed end with a nut.

The further improvement of the installation method of the lifting device attached to the special-shaped section of the present invention lies in that the method for connecting the attached base support to the special-shaped section includes:

anchoring a plurality of anchor pieces at the attachment point of the special-shaped section;

fixing the anchor plate at the ends of the plurality of anchors;

Install a wall mount on the anchor plate;

A wall attachment device is fixedly installed on the attachment base, and the end of the wall attachment device is connected and fixed to the corresponding wall attachment seat.

Description of drawings

Fig. 1 is the side view of the lifting device attached to the special-shaped section of the present invention;

Fig. 2 is the front view of the lifting device attached to the special-shaped section of the present invention;

Fig. 3 is a structural schematic diagram of the installation foundation anchored to the ground in the lifting device attached to the special-shaped section of the present invention;

Fig. 4 is the structural representation of anchor rod among Fig. 3;

Fig. 5 is a structural schematic diagram of the connection between the attachment base and the support of the special-shaped section in the lifting device attached to the special-shaped section of the present invention;

Fig. 6 is a schematic structural view of the anchor in Fig. 5;

Fig. 7 is a structural schematic diagram of the attachment base and the wall attachment in the lifting device attached to the special-shaped section of the present invention;

Fig. 8 is a schematic diagram of the top structure of the attachment base in the lifting device attached to a special-shaped section according to the present invention;

Fig. 9 is a plan view of the top structure of the attachment base in the lifting device attached to a special-shaped section according to the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, it shows a side view of the lifting device attached to the profiled section of the present invention. A lift needs to be installed on the construction site to transport materials and construction personnel from the top to the bottom of the special-shaped section. However, due to the large inclination angle of the special-shaped section and the uneven surface, it is impossible to provide an installation foundation for the lift, and the length of the wall attached to the lift is limited and cannot be supported. on the profiled section. The lifting device attached to the special-shaped section of the present invention adopts the attachment foundation supported on the special-shaped section as the basis for installing the elevator, and the elevator is attached to the attachment foundation to ensure the stable installation and safe use of the elevator. The attachment foundation can be a tower crane standard section, a poured concrete structure, or a steel structure column, etc. The tower column of the elevator and the attachment foundation are connected and fixed by wall attachments, which are set at certain intervals to effectively ensure the tower The stability of the column. In addition, in order to facilitate the use of the elevator, a steel platform is set between the top of the attached foundation and the top of the special-shaped section to form a pedestrian passage, providing convenience for construction personnel and materials. The lifting device and method attached to the special-shaped section of the present invention will be described below in conjunction with the accompanying drawings.

Referring to Fig. 1, it shows a side view of the lifting device attached to the profiled section of the present invention. The lifting device attached to the special-shaped section of the present invention will be described below in conjunction with FIG. 1 .

As shown in Figure 1, the lifting device attached to the special-shaped section of the present invention is used to attach the elevator 30 to the special-shaped section 10. The special-shaped section 10 is a cliff wall in this embodiment, and the inclination angle of the cliff wall is relatively large. The horizontal distance between the top and bottom of the cliff wall is as long as 21 meters. The lifting device attached to the special-shaped section of the present invention includes an attachment base 20 and an elevator 30. The attachment base 20 is erected on the side of the special-shaped section 10 and is connected to the special-shaped section 10. The elevator 30 includes a tower column 301 and a tower column 301 The elevator 302 moving up and down, the tower column 301 is erected on the side of the attached foundation 20 and is supported and connected with the attached foundation 20 . The attachment foundation 20 and the tower column 301 are arranged on the ground 60 at the bottom of the special-shaped section 10 , and a foundation structure 50 is arranged on the ground 60 , and an anchor rod 501 is arranged between the foundation structure 50 and the ground 60 . The supporting connection between the attached foundation 20 and the special-shaped section 10 is realized by the attached wall device 206. The top of the attached foundation 20 and the top of the special-shaped section 10 are erected with a steel platform 40. Transported to the elevator 302 of the elevator 30 , the elevator 302 moves down along the tower column 301 to be transported to the ground 60 at the bottom of the special-shaped section 10 .

The attachment foundation 20 can be a tower crane standard section, a poured concrete structure, or a steel structure column. In this embodiment, a tower crane standard section is preferably used. After the construction is completed, the tower crane standard section is easy to disassemble and can continue to be used. The tower column 301 of the elevator 30 is provided with guide rails, and the elevator 302 is installed on the guide rails and moves up and down along the guide rails.

Referring to FIG. 2 , it shows a front view of the lifting device attached to a special-shaped section of the present invention. The lifting device attached to a special-shaped section of the present invention will be described below in conjunction with FIG. 2 .

As shown in FIG. 2 , as a preferred embodiment of the present invention, the lifting device includes two lifters 30 , and one lifter 30 is arranged on both sides of the attachment base 20 . Elevators 30 are provided on both sides of the attachment foundation 20, so that the stress on the attachment foundation 20 is balanced, and the connection between the elevator 30 and the attachment foundation 20 is stable, ensuring construction safety. The pylons 301 of the elevator 30 are respectively fixed to one side of the attached foundation 20 through the wall attachments 303. The wall attachments 303 realize the supporting connection of the towers 301 to the attached foundation 20, and the attached foundation 20 and the towers 301 are respectively erected on the ground 60. Above, a foundation structure 50 is provided on the ground 60 , and the foundation structure 50 is anchored to the ground 60 through anchor rods 501 to provide a stable foundation for attaching the foundation 20 and the tower column 301 . As shown in FIG. 3 , according to the force analysis and calculation of the elevator 30 and the attached foundation 20, a foundation structure 50 that meets the support requirements is designed, wherein the foundation structure 50 of the attachment foundation 20 and the foundation structure 50 of the tower column 301 are anchored to each other, form a whole. The foundation structure 50 is provided with an anchor rod 501 , one end of the anchor rod 501 is anchored into the ground, and the other end is anchored into the interior of the foundation structure 50 , realizing the anchored and stable connection between the foundation structure 50 and the ground 60 . As shown in Fig. 4, when installing the anchor rod 501, first drill a hole 60 on the ground, then insert the anchor rod 501 into the drill hole and expose a section of anchoring section above the ground, inject cement slurry 503 into the drill hole, and place it on the ground. An anchoring plate 502 is provided in the anchoring section, and after the cement slurry 503 is solidified, one end of the anchor rod 501 is anchored into the ground. The anchoring section of the anchor rod 501 is bound and fixed to the steel bars laid in the foundation structure 50 , and then when concrete is poured to form the foundation structure 50 , the anchoring section of the anchor rod 501 is anchored into the foundation structure 50 .

As shown in FIG. 5 , it shows a schematic diagram of the connection between the attachment base and the support of the special-shaped section in the lifting device attached to the special-shaped section of the present invention. Next, with reference to FIG. 5 , the attachment base and the supporting connection structure of the special-shaped section in the lifting device attached to the special-shaped section of the present invention will be described.

As shown in Figure 5, the attachment base 20 realizes the supporting connection between the attached wall device 206 and the special-shaped section 10. The attached wall device 206 is connected with the attached wall seat fixed on the surface of the special-shaped section 10. For the attachment point of the device 206, a plurality of anchors 103 are set at the attachment point of the special-shaped section 10. As shown in FIG. For anchoring, the anchor piece 103 is provided with an anchor plate 104 at the end of the drilled hole, and welding is performed at the junction of the anchor piece 103 and the anchor plate 104, and the height of the weld seam 1041 is 6mm. The anchor plates 104 of the plurality of anchors 103 at the attachment point are fixed with wall mounts, and the wall mounts are connected and fixed with the wall mount 206 . The wall attachment device 206 includes a plurality of supporting steel pipes, and the supporting steel pipes are obliquely supported between the attachment foundation 20 and the special-shaped section 10. Preferably, the wall attachment device 206 includes a first support pipe and a second support pipe, and the first support pipe One end of the second support pipe is fixed on the attachment base 20 , and the other end is connected to the wall seat on the special-shaped section 10 at a distance, so that the attachment base 20 is supported and connected to the special-shaped section 10 .

Referring to Fig. 7, it shows a schematic view of the structure of the attachment base and the wall attached in the lifting device attached to the special-shaped section of the present invention. Below in conjunction with Fig. 7, the attachment base and the attached wall in the lift device attached to the special-shaped section of the present invention The structure of the file is described.

As shown in Figure 7, wall attachments 303 are fixed at intervals on the tower column 301, and are fixedly connected to the attachment foundation 20 through the attachment base 303, and the attachment base 20 is provided with a fixing member 204 at a position corresponding to the wall attachment 303, and the fixing member 204 includes Two shaped steel pieces 2042 and a plurality of fasteners 2041 are used to fasten the two shaped steel pieces 2042 to the outside of the attachment base 20 through the fasteners 2041 . A connection ear plate 205 is fixed on the steel section 2042 , and the connection ear plate 205 is connected and fixed with the wall attachment 303 , realizing the fixed connection with the tower column 301 and the attachment foundation 20 through the wall attachment 303 . The two ends of the fastener 2041 are provided with screw rods, and the corresponding screw rods on the shaped steel part 2042 are provided with through holes. The two shaped steel pieces 2042 are tensioned, so that the two shaped steel pieces 2042 are clamped and fixed on the outside of the attachment foundation 20 . Preferably, the length of the fastener 2041 is the same as the length of the attachment base 20. When the steel part 2042 is screwed and fastened by the screw on the fastener 2041, the steel part 2042 is tightly against the surface of the fastener 2041. At the end, the end of the fastener 2041 plays a certain role in supporting the steel parts 2042 on both sides. The fastener 2041 is preferably a steel part, which can be an angle steel or a channel steel. The two ends of the steel part Screw rods are respectively welded and fixed. The shaped steel piece 2042 can be an angle steel or a channel steel.

The wall attachment 303 includes a strip frame 3031 and a trapezoidal frame 3032. One end of the strip frame 3031 is fastened to the trapezoidal frame 3032 by bolts, the strip frame 3031 is connected to the short side of the trapezoidal frame 3032, and the other end is connected to the tower column 301. Bolt tight connection. The other end of the trapezoidal frame 3032 is the bottom of the trapezoidal frame 3032. Mounting plates are respectively fixed on both sides of the bottom. The mounting plates are fastened with connecting rods by bolts, and the connecting rods correspond to the connecting ears attached to the foundation 20. As for the plate 205, the connecting rod is matched with the connecting lug plate and is fastened and connected by bolts. A wall attachment 303 is arranged at intervals of 6 to 9 meters on the tower column 301 , and the wall attachment 303 is respectively connected with the connecting ear plate 205 and the tower column 301 with bolts and pins to provide support for the tower column 301 .

Referring to FIG. 8 , it shows a schematic view of the top structure of the attachment foundation in the present invention, and referring to FIG. 9 , it shows a top view of the top structure of the attachment foundation in the present invention. The top structure of the attachment foundation in the present invention will be described below with reference to FIG. 8 and FIG. 9 .

As shown in Figure 8 and Figure 9, the outer wall around the top of the attachment base 20 is provided with a reinforcement plate 201, the reinforcement plate 201 is welded to the attachment base 20 through the plug welding hole 2011, the corresponding reinforcement plate 201 Screw rods 2012 are arranged between them, and are fastened and connected by the screw rods 2012 , so that the reinforcing plates 201 on opposite sides clamp the attached foundation 20 . A supporting steel plate 202 is laid on the top of the attached foundation 20, and a plurality of stiffening plates 2013 are arranged between the supporting steel plate 202 and the reinforcing plate 201. The steel beam 203 is erected on the supporting steel plate 202 and fixed by welding with the supporting steel plate 202. The connection mode between 203 and the attachment foundation 20 makes the attachment foundation 20 only bear vertical pressure, which provides the safety and stability of the attachment foundation. Such a connection method makes the stress diffuse and transmit downwards sequentially, effectively solving the situation of stress failure at the connection node. As shown in Fig. 1, the top of the attached foundation 20 and the top of the special-shaped section 10 are provided with a steel platform 40, and the top of the special-shaped section 10 is provided with a retaining wall, and embedded steel plates are set in the retaining wall, and the steel beam 203 is erected on the The supporting steel plate 202 and the embedded steel plate are fixed on the bottom of the steel beam 203 by welding with the supporting steel plate 202 and the embedded steel plate respectively. The steel platform 40 includes the steel beam 203 and the platform steel plate, and the platform steel plate is laid on the steel beam 203. And it is welded and fixed with the joint of the steel beam 203, and the top of the special-shaped section 10 is connected with the top of the attached foundation 20 through the steel platform 40 to form a pedestrian passage.

The connection method between the steel beam 203 and the attached foundation 20, compared with the connection method of steel beams in the prior art, such as flange welding or web bolted bolt-welding hybrid connection, can solve the following problems existing in the existing steel beam connection method Defects: The steel beam not only produces pressure but also bending moment on the attached foundation, and the connection nodes are prone to damage, and the welds or solder joints are easy to disconnect and crack, posing safety hazards. In order to ensure the safety and stability between the attachment foundation 20 and the steel beam 203 in the construction elevator, the present invention adopts the connection mode of the steel beam 203 and the attachment foundation 20 by lap joint, so that the attachment foundation 20 only bears vertical pressure, and provides an attachment foundation 20 and the safety and stability of the installation structure as a whole. At the same time, the overlapping method is adopted to transmit the stress through the diffusion, which effectively solves the stress failure situation at the connecting nodes.

The beneficial effects of the lifting device attached to the special-shaped section of the present invention are:

The structural method of the elevator attached to the attached foundation is adopted to solve the problem that the elevator cannot support the special-shaped section. When setting up this structure, the bearing capacity of the attached foundation is calculated accordingly, which meets the construction requirements and has safety guarantee. Through the adoption of the attached foundation, the installation structure of the lift has the characteristics of simplicity and ease of operation.

The connection between the elevator and the attached foundation is realized by the cooperation of the attached wall parts and the fixed parts. The attached wall parts exert tension on the channel steel on the fixed part, and the angle steel on the fixed part is set between the two channel steels to support the channel steel. The function can offset the tension on both sides, reduce the tension on the attached foundation, and ensure the stability of the attached foundation. The connection structure between the attached wall parts and the fixed parts is easy to install and the structure is stable, which effectively ensures the overall stability of the elevator.

The top of the attached foundation and the top of the special-shaped section are equipped with a steel platform, which is used as a pedestrian passage, providing a passage from the top of the section to the elevator, and facilitating the passage of people and goods. The steel platform is built between the attached foundation and the pre-embedded steel plate with special-shaped section, and is welded to the attached foundation and the pre-embedded steel plate respectively. It only bears the pressure, which improves the safety and stability of the attached foundation, and at the same time, the pressure is transmitted through the overlapping diffusion, reducing the stress damage to the welding point.

The attached wall device is used to realize the support connection between the attached foundation and the special-shaped section, and the effective support of the attached foundation is realized through the attached wall device. the stability of the support.

The installation method of the lifting device attached to the special-shaped section of the present invention includes:

As shown in Figure 1, the attachment foundation 20 is set on the ground 60, and the attachment foundation 20 is supported and connected to the special-shaped section 10; then the elevator 30 is erected on the side of the attachment foundation 20, and the tower column 301 of the elevator 30 is erected on the ground 60 , and supported and connected to the attached foundation 20, and then the elevator 302 of the elevator 30 is installed on the guide rail of the tower column 301, so that the elevator 302 can move up and down along the tower column 301. The attachment foundation is attached to the special-shaped section to solve the problem that the special-shaped section has a large inclination angle and cannot directly provide support for the elevator. The attachment foundation can provide a good support foundation for the elevator and realize the safe operation of the elevator.

The installation method of the lifting device attached to the special-shaped section of the present invention also includes: setting the base structure 50 of the attachment base 20 and the tower column 301, and the two sides of the attachment base 20 are respectively provided with the tower column 301, and the base structure 50 needs to be installed before setting. First calculate the stress situation of the attached foundation 20 and the elevator 30, and design the foundation structure 50 according to the stress analysis. The following takes the attached foundation 20 using the tower crane standard section as an example to carry out force analysis and calculation:

The calculation of the standard section of the tower crane, through the force analysis, it can be known that a pair of force couple torque generated by the people-cargo elevator through its wall-attached parts acts on the standard section of the tower crane. The formula provided by the manual of the people-cargo elevator is:

In the scheme, L=2600, B=1425, can be obtained by calculation: F=53.40KN

Therefore, the torque T=F×B generated by the force couple can be calculated as T=53.4KN×1.425m=76.10KN.m.

Since the people-goods elevator is arranged on both sides of the tower crane standard section, the torque generated by the people-goods elevator to the tower crane standard section is:

76.10KN.m×2=152.20KN.m≤269.3KN.m, which is within the stress range of the tower crane standard section, so the tower crane standard section serves as the attached foundation to support the elevators 30 on both sides to meet the requirements.

The basic analysis and calculation of the standard section of the tower crane shows that the people-freight elevator only generates torque on the standard section of the tower crane through the wall parts attached to the people-freight elevator, and ≤T=269.3KN.m, while the rated load of the people-freight elevator is 2×2000kg, That is, the maximum force acting on the standard section of the tower crane on the pit roof platform is ≤4×2000×10=80KN≤Fv=511.2KN, so if the foundation of the standard section of the tower crane meets the force requirements of the TC5610 tower crane during normal operation, it must also meet this requirement. The force requirements necessary for the program. Through calculation and analysis, it is concluded that the foundation size of the standard section of the tower crane is: 4m×4m×1.5m, and the reinforcement is: HRB400φ14@150 double-layer two-way.

Calculation of the basic bearing capacity of the elevator: weight of the cage: 1500×2=3000kg, weight of the fence: 1170kg, total weight of the guide rail frame (40 sections in total): 40×170=6800kg, load capacity (double cage): 2×2000kg, total : 14970kg.

The weight of attached wall frame, power cable, cable guiding device, steel wire rope, head frame fasteners, etc. accounts for about 35% of the total weight of the rail frame and is 2380kg. Take the factor of safety as 2.

P=(14970+2380)×0.02=379.4KN, according to the above data, the maximum bearing pressure of the foundation needs to meet 379.4KN. Note: The bearing capacity of the foundation should still meet 0.1Mpa.

According to the instructions provided by the construction elevator unit, it can be known that the requirements of the elevator are reviewed on the basis of the maximum pressure of 379.4KN. Since the calculated foundation only needs to meet the bearing pressure requirements, the foundation calculation model selects the extended foundation under the independent column as the calculation model for calculation and design. The calculation result is 4m×2.8m×0.5m, and the reinforcement is HRB400φ12@150 double-layer two-way.

From the above analysis, it can be seen that the foundation structure 50 includes a tower crane standard section foundation and an elevator foundation, the size of the tower crane standard section foundation is 4m×4m×1.5m, and the elevator foundation size is 4m×2.8m×0.5m.

As shown in Fig. 3 and Fig. 4, the construction method of the foundation structure 50 includes:

Measure and locate, clean up at the set position; set the anchor rod 501 to anchor into the ground, and reserve an anchor section above the ground; bind the steel bars, and tie the anchor section to the adjacent steel bars; set the formwork, pour concrete, and form basic structure.

The construction requirements for tying steel bars are as follows: 1) The reinforcement is arranged in two directions; the stirrup steel bar is made of HRB400φ10 steel bar; 2) The thickness of the protective layer of the steel bar is 50mm, and the stone pads are used, and the space between the pads is 500×500mm, arranged in a plum blossom shape; 3) The steel bars It is not allowed to cut off, and the spacing of the steel bars at the embedded bolts is partially adjusted to bypass the reserved position; 4) The foundation of the people-cargo elevator and the foundation steel bars of the standard section of the tower crane are anchored to each other, so that the foundation forms a whole.

Attention should be paid to the concrete construction: 1) Foundation concrete: The foundation strength grade is calculated according to the design structure, and C35 concrete is uniformly selected. 2) Vibration: The concrete is vibrated along with the paving, and the wooden scraper is scraped along the slope and flattened by the iron trowel to press out the water, and the height near the far end of the balcony is 2-3cm. 3) Curing: Immediately spread plastic film to moisturize and maintain, and then spread 1-2 layers of heat-insulating straw quilts depending on the temperature. The curing time is 14 days.

In the construction of anchor rod 501, the diameter of the anchor rod hole is 3 times the diameter of the anchor rod rib body, but not less than 1 times the anchor rod rib body plus 50mm. The length of anchor bars inserted into the foundation structure shall meet the anchorage length requirements of steel bars. The anchor rod body adopts hot-rolled ribbed steel bar, the strength of cement mortar should not be lower than 30MPa, and the strength of fine stone concrete should not be lower than C30. Before grouting, clean the anchor holes. In this embodiment, a total of 20 rock bolts are designed, the effective length of which is 7.0m and 9.0m, and the outer side adopts the effective length of 7.0m, and the inner part adopts the effective length of 9.0m, and the exposed length is about 1.5m. Symmetrical arrangement in plum blossom shape.

The pullout force borne by a single anchor in the anchor foundation shall be checked and calculated according to the following formula:

Where: F _k —— the vertical force acting on the top surface of the foundation corresponding to the standard combination of actions, here 379.4kN is taken. G _k ——The self-weight of the foundation and the soil on it, 1693.4kN is taken here. M _xk , M _{yk ——Calculate} the moment value acting on the centroid of the bottom surface of the foundation according to the standard combination of actions. Here, because the load is symmetrical and the foundation is symmetrical, the two are 0, so the stress of all anchors can be considered the same . R _t ——the characteristic value of the pull-out bearing capacity of a single anchor rod, where R _t =f _k ·A=400000×3.14×0.025 ² ÷4=196.25kN, R _k ——the standard value of the ultimate pull-out bearing capacity of the anchor rod , here take R _k ＝πd∑q _sk,i l _i ＝3.1416×0.1×180×7＝398.84kN, bring it into the formula:

The safety factor is 5.

because So the need is met.

Summary of the design of anchor 501: choose Φ25 fine-rolled threaded steel bar as the material of the anchor rod, the diameter of the anchor rod is Φ100mm, the effective length of the rod body is 7.0m, 9.0m, and the exposed length of the rod is 1.5m (the actual exposed length depends on Considering the unified binding with the steel bars in the foundation), the anchoring agent mainly adopts cement mortar. Anchor rods are set at 90°. After the construction of the anchor bolts for the foundation reinforcement of the standard section of the people and freight elevators and tower cranes is completed, nuts and anchor backing plates are used to fix them first. During the subsequent concrete foundation construction, the anchor backing plates are recovered, and the anchor rod body and the internal reinforcement of the foundation are uniformly bound and fixed.

The bolt construction process: 1) The drilling rig is in place. According to the construction situation on site, make full use of the site conditions. The installation of the drilling rig requires level and stability. It should be checked at any time during the drilling process. 2) Drilling method, D100 drilling rig is used for drilling, and the drilling speed is strictly controlled according to the performance of the drilling rig and the anchoring formation, so as to prevent the distortion and diameter change of the drilling hole, which may cause difficulty in anchoring or other accidents. 3) During the drilling process, make on-site construction records for the drilling status (weight on drill, speed of penetration) and other conditions. In case of poor drilling phenomena such as hole collapse, the drilling must be stopped immediately, and the wall-solid grouting treatment should be carried out in time (grouting pressure 0.3-0.5MPa). fulfil requirements. 4) Aperture and depth, the drilling diameter and depth are not less than the design value, the deviation of the orifice is ≤±20mm, and the allowable deviation of the hole depth is +200mm. In order to ensure the diameter of the bolt hole, it is required that the actual diameter of the drill bit should not be smaller than the designed hole diameter. In order to ensure the depth of the bolt hole, the actual drilling depth is required to be greater than the design depth by more than 0.1m. 5) Clean the anchor hole. After the drilling reaches the design depth, the drilling cannot be stopped immediately, and it is required to drill steadily for 1 to 2 minutes. There must be no ballast and sticky water on the wall of the drilled hole, and it must be cleaned. After the drilling is completed, use high-pressure air (wind pressure 0.2-0.4MPa) to remove the rock powder in the hole to avoid reducing the cement mortar and the hole. The bond strength of the rock-soil mass. 6) Manufacture and installation of the anchor rod body. This time, the ordinary anchor rod body adopts precision-rolled threaded steel bars with a diameter of 25mm, and the drilling diameter is 100mm, and the angle is set at 90°. A set of steel bar centering brackets are set every 1.0m along the axis of the anchor bolt for ordinary anchor bolts to ensure that the thickness of the protective layer of the anchor bolt is not less than 25mm. Anti-corrosion measures such as painting and oiling are used for the anti-corrosion at the end of the anchor bar. Before installation, ensure that each steel bar is straight, remove rust and oil, and carefully check the anchor hole number again before installing the anchor body. After confirming that it is correct, blow the hole with high-pressure air, and manually put the anchor body into the hole. Use a steel ruler to measure the length of the anchor rod exposed outside the hole, and calculate the length of the anchor rod in the hole (the error is controlled within the range of ±50mm), so as to ensure the effective length of the anchor rod. 7) Grouting, ordinary bolts use full-length grouting. When grouting, first start from the bottom of the hole at high speed and low pressure. When the cement mortar overflows from the hole, then grout at low speed and high pressure from the hole. If the filling is not enough at one time or settlement occurs after grouting, add grouting until it is full. The grouting pressure is 0.3-0.5MPa, and the grouting amount shall not be less than the calculated amount. The grouting material is P.O42.5 ordinary Portland cement and fine sand, and the grouting strength grade is 30MPa. The grouting pressure, grouting quantity and grouting time are determined according to the volume of the anchoring body and the conditions of the anchoring formation. 8) Install the anchor backing plate and seal the anchor. According to the rock surface conditions in the hole area, the weathered rock surface on the surface should be chiseled before installation, and leveled with mortar. When installing, ensure that the anchor plate is in close contact with the leveling layer behind the plate, and if necessary, use yellow sand to fill the gap between them. After the installation of the anchor plate is completed, install the gasket and the nut, and tighten the nut after the grouting body reaches the strength. According to the diameter of the anchor rod steel bar diameter Φ25mm precision-rolled threaded steel bar, the hole diameter of the anchor backing plate needs to be able to pass through the opening hole and be anchored to the anchor backing plate. The hole diameter of the anchor backing plate is tentatively set at Φ30mm; Anchor bars need to be uniformly bound firmly with the foundation parts of subsequent construction.

After the foundation structure 50 is set up, the attachment foundation 20 is set on the foundation structure 50. The attachment foundation 20 adopts the tower crane standard section as an example for illustration. The TC5610 tower crane standard section produced by Zoomlion is selected as the attachment foundation 20. The elevator 30 provides support, and the TC5610 is hoisted by an 80t crane. The installation steps include: 1. Install the fixed base section of the tower crane on the foundation of the tower crane, and connect and fix the fixed base section of the tower crane with the foundation of the tower crane with pre-embedded anchor feet. 2. Measure and adjust the levelness and verticality of the fixed base section of the tower crane to be ≤1‰. 3. Install a standard section EQ with a length of 2.8m on the fixed base section of the tower crane. Install a standard section E with a length of 2.8m on the installed standard section EQ. 4. Repeat the installation of standard section E until the tower crane installation is completed. 5. Then carry out installation technical test and acceptance.

The installation method of the lifting device attached to the special-shaped section of the present invention also includes that the attachment base 20 supports and connects the special-shaped section 10 through the wall-attaching device 206, as shown in FIG. 5 and FIG. 6 , including:

Anchor multiple anchors 103 at the attachment point of the special-shaped section 10;

fixing the anchor plate 104 at the ends of the plurality of anchor pieces 103;

Then set the wall seat on the anchor plate 104;

The first support tube and the second support tube are fixedly arranged on the attachment base 20, the connection ends of the first support tube and the second support tube on the special-shaped section 10 are far away, and the ends of the first support tube and the second support tube are They are respectively connected and fixed with the wall-attached seats on the corresponding special-shaped section 10.

In order to ensure the stability of the attached foundation 20, anchors are provided at the support points on the special-shaped section 10, and the section is leveled by spraying concrete within a corresponding range to ensure that the support points are evenly stressed. The anchoring angle of the anchor is set to 19 degrees, and the standard value and design value of the axial tension of the anchor can be calculated as follows:

N _a ＝rQN _ak , where Nak—the standard value of the axial tensile force of the anchor rod (KN), Na—the design value of the axial tensile force of the anchor rod (KN), Htk—the standard value of the horizontal tensile force of the anchor rod (KN), take The maximum axial tensile value of the wall attachment is 189.13kN; a—the inclination angle of the anchor rod (°), rQ—the sub-item factor of the load, which can be taken as 1.30, so that Na=260KN can meet the requirements. The cross-sectional area of the anchor reinforcement should meet the following requirements: In the formula, A _S —the cross-sectional area of the anchor bar reinforcement (㎡); ξ ₂ —the tensile working condition coefficient of the anchor bar, 0.92 for the temporary anchor bar; γ ₀ —the importance coefficient of the slope engineering; f _y —the tensile strength of the anchor bar Design value (KPa). The solution is A _S =9.0839×10-4. It is concluded that the anchor body needs to be selected with a diameter greater than 28.9mm. Therefore, this time the anchor rod body is planned to use Φ32 ordinary threaded steel. The length of the anchorage section between the anchor and the ground should meet the requirements of the following formula, In the formula, la—the length of the anchoring section (m), this time the anchor is full-length anchoring; D—the diameter of the anchoring body (m), the diameter of the drilling hole of the anchoring rod this time is the diameter of the anchoring body, and the drilling diameter is Φ100mm. frb—characteristic value of bond strength between formation and anchor (KPa), frb is taken as 600KPa according to hard rock. ξ1—the working condition coefficient of the bond between the anchor body and the soil layer, which is 1.33 for the temporary anchor. The length of the anchorage section is 8.5m, and 4 anchor pieces are set at each attachment point, which can meet the anchoring force requirements. An overview of the preliminary design of the anchor. The Φ32 ordinary threaded steel bar is selected as the rod material of the anchor. The effective length of the rod body is 8.5m, and the exposed length of the rod is 0.5m. The anchoring agent mainly uses cement slurry. Considering that the anchor bolt is perpendicular to the slope of the cliff, it is set at 19°. According to the development of cracks on the rock surface and the undulation of the cliff, the steel plate for the anchor plate is 800mm×600mm×30mm, which can be installed in blocks according to the current situation of the undulation of the cliff.

The construction method of setting the anchors 103 on the special-shaped section 10 is the same as the construction method of the anchor rod 501 at the ground 60. The difference is that after the final anchors 103 are constructed, the four anchors 103 at the attachment point are passed through four The steel bar of Φ12 welds the anchor piece 103 and the anchor plate 104, and the weld seam height is 6 mm. During the section construction and anchoring process, try to use the site conditions to provide the working surface. When there is no construction working surface, set up the scaffolding construction platform to provide the foundation for the section construction and anchoring.

Scaffold construction:

(1) Materials for scaffolding

Scaffolding adopts ф48.3×3.6 steel pipe, the surface of steel pipe is straight and smooth, and there should be no cracks, scars, delamination, dislocation, hard bending, burrs, indentations and scratches with a depth of more than 0.5mm. The steel pipes are uniformly painted yellow, and the scissors braces are yellow and black warning colors. The upper pull rod is made of ф25 round steel. The fasteners are right-angle fasteners, steering fasteners and butt fasteners matched with ф48.3 steel pipes. The quality of the fasteners should comply with the national standard "Steel Pipe Scaffold Fasteners" GB15831. The quality of the old fasteners should be checked before use. It is strictly forbidden to use those with cracks and deformations. The bolts with slippage must be replaced. Both new and old fasteners should be anti-embroidered. Bamboo siding boards made of moso bamboo are used for the scaffolding. It is strictly forbidden to use rotten, deteriorated and low-bending bamboo siding. The dense mesh adopts flame-retardant dense mesh, and the area per 100cm2 is not less than 2000 mesh.

(2) Distribution of scaffolding

According to the characteristics of the project and the construction requirements, this project adopts floor-to-ceiling multi-row scaffolding with wall-to-wall retractable erection to ensure that the safety, quality and progress requirements of the project are met. The uniform live load of the scaffold is considered according to the scaffolding used for structural construction. The value of the uniformly distributed construction load is 3.0kN/m2, and overloading is strictly prohibited during use. The distance between the scaffolding operation surface and the slope is 400mm, and if the distance between the inner pole of the scaffold and the slope exceeds 400mm, the internal protection shall be carried out to ensure that the distance from the pit wall is 400mm.

(3) Multi-row scaffolding with floor-standing fastener steel pipes:

1) Set up double-pipe scaffolding on the ground from the support attachment point at the bottom of the pit of the freight elevator. The height of the double poles is 6m. Attached to the wall.

2) Since the slope is 71°, the frame shrinks according to the ups and downs of the cliff.

3) Pull node settings:

① Tie on the cliff: set up a steel anchor with a depth of 0.5 to 1.0m on the cliff as a fulcrum, and weld it with the steel pipe of the frame. It is planned to set up an anchor every 3 meters. ②Upper knot: It is planned to set steel wire rope knots from the ground beam on the cliff top to the corresponding knot points of the lower frame. It is planned to set up a wire rope tie every 6 meters.

(4) Construction requirements for floor scaffolding:

1) Operation process: ① Level the ground under the foot of the scaffolding tube; ② Place the footing of the scaffolding tube; ③ Erect the pole and place the sweeping pole at the same time; ④ Set up the horizontal pole; ⑦Laying bamboo fences; ⑧Hanging dense mesh; ⑨Establishing safety protection.

2) Requirements for the support foundation of the floor pole:

①Pour a 100mm concrete layer on the foundation surface, and the ground must be flat; ②Place scaffolding feet on the flat ground. The feet are made of 8# channel steel. The scaffolding feet should be accurately placed on the positioning line, and the base should be pulled Straighten. ③Double poles are used at a height of 6m at the bottom, and the poles should be located on the feet of the scaffolding tubes, and the length of the feet of the scaffolding tubes should not be less than 2 spans.

3) The pole erection should meet the following requirements:

①Steel pipes with different outer diameters should not be mixed; ②The distance between the vertical poles of the floor scaffolding is 1.0m, the horizontal distance is 1.0m, the inner vertical pole is 0.4m away from the pit wall, and the inner vertical pole is reliable on the slope; ③The vertical pole must be in accordance with the construction plan. Longitudinal and transverse distances are erected. When the distance between the inner vertical bar and the slope is greater than 400, the small horizontal bar is used to lengthen the side slope and add diagonal bracing.

4) The erection of longitudinal horizontal bars shall meet the following requirements:

①The longitudinal horizontal bar is set on the inside of the vertical bar, and the length of the steel pipe should not be less than three spans; ②The longitudinal horizontal bar is fixed on the horizontal horizontal bar with right-angle fasteners, set at equal intervals, and the spacing is 0.25~0.3m; ③The longitudinal horizontal bar adopts docking Fastener connection, the joints of two adjacent longitudinal horizontal bars should not be set in synchronous or in the same span, the distance between two adjacent joints in the asynchronous or different spans in the horizontal direction is not less than 50mm, and the distance from the center of each joint to the nearest main node The distance should be less than 1/3 of the longitudinal distance;

5) The vertical and horizontal sweeping poles shall meet the following requirements:

① A horizontal bar must be installed at the main node, which is fastened with right-angle fasteners and is strictly prohibited to be dismantled. The center-to-center distance of two right-angle fasteners at the main node shall not be greater than 150mm. The vertical and horizontal sweeping poles should be installed 200mm above the base of each vertical pole, and fixed with the vertical poles with right-angle fasteners; Greater than 1/2 of the longitudinal distance; ③ The horizontal horizontal bar is set below the longitudinal level, and a horizontal horizontal bar must be installed at the intersection of the vertical bar and the longitudinal horizontal bar, and it is strictly forbidden to dismantle it arbitrarily;

6) The erection of scissor braces shall meet the following requirements;

① The scissors braces are arranged continuously on the entire facade, and the layout should be even. The steel pipes of the scissors braces should be erected by pull wires, and the joints with the outer poles are connected with the poles by rotating fasteners. ②Scissor braces are set on the outside of the scaffolding poles, and the joints of the poles are connected by lap joints. The lap joint length is 1000mm, fixed by no less than 3 rotating fasteners, and the fixed distance is 1000mm. ③Each scissors brace should span 4-6 poles, forming an angle of 45°-60° with the longitudinal horizontal pole.

7) The wall parts should meet the following requirements

The wall connecting parts should be close to the main node, and the distance away from the main node is not more than 300mm. If the distance between the main node and the concrete layer is more than 300mm, a small horizontal bar should be set at the connection between the temporary tie and the inner and outer poles.

The wall parts are set up synchronously with the erection of scaffolding.

8) The erection of railings shall meet the following requirements:

①The height of the upper railing is 1.2m, and the height of the lower railing is 0.6m; ②The foot guard is made of nine plywood, and painted with color separation, with a height of 0.2m; ③The upper railing, lower railing, and foot guard are all set on the inside of the outer pole.

9) Bamboo fence scaffolding is laid according to the direction of its main bamboo reinforcement perpendicular to the longitudinal horizontal bar, and it is butted and tiled. The four corners should be fixed on the longitudinal horizontal bar with galvanized steel wires with a diameter of 1.2mm. Two necks must be added between the inner and outer large crossbars before laying bamboo fences. Each floor is covered with bamboo fences.

10) Fastener installation should meet the following requirements:

①The specification of the fastener must be the same as the outer diameter of the steel pipe; ②The tightening torque of the bolt is not less than 40N.m, and not greater than 65N.m; ③Fix the horizontal horizontal bar, vertical horizontal bar, scissors brace, horizontal diagonal brace, etc. at the main node The distance between the center points of the right-angle fasteners and rotary fasteners used is not greater than 150mm; ④The opening of the docking fasteners faces upward or inward; ⑤The length of each rod end protruding from the edge of the fastener cover is not less than 100mm.

After the attachment base 20 is attached to the special-shaped section 10, the tower column 301 of the elevator 30 is set on both sides of the attachment base 20, and the tower column 301 is supported and connected to the attachment base 20 through the attachment wall piece 303, specifically including: As shown in 7, while installing the tower column 301, the wall attachment 303 is arranged at intervals, and the fixing member 204 is set at the position corresponding to the attachment base 20 corresponding to the wall attachment 303, and the setting of the fixing member 204 includes:

Provide angle steel 2041, weld the screw rods to both ends of the angle steel 2041 and expose a section of screwed end; erect the angle steel 2041 on the attachment foundation 20, and connect the two ends of the angle steel 2041 to the position of the wall attachment 303 on the tower column 301;

Two channel steels 2042 are provided, and the channel steels 2042 are provided with through holes and connecting lug plates 205. The screw rods on the angle steels 2041 pass through the corresponding through holes on the channel steels 2042, and the exposed screw ends are screwed together by the nuts. Two channel steels 2042 are fastened to both ends of the angle steel 2041 . An angle steel 2041 is also fixed at the opposite end of the two channel steels 2042, and the angle steel 2041 is fastened by the screws at both ends and the nuts, and the channel steel 2042 at both ends is tightened so that the channel steel 2042 at both ends is close to the base 20. On the outer surface, the angle steel 2041 also supports the channel steel 2042 at both ends.

A connecting lug 205 is fixed on the channel steel 2042 , and the wall attachment 303 is fixedly connected to the connecting lug 205 . The wall attachment 303 includes a strip frame 3031 and a trapezoidal frame 3032, one end of the strip frame 3031 is fastened to the trapezoidal frame 3032 by bolts, the strip frame 3031 is connected to the short side of the trapezoidal frame 3032, and the other end is connected to the tower column 301 through Bolt tight connection. The other end of the trapezoidal frame 3032 is the bottom of the trapezoidal frame 3032. Mounting plates are respectively fixed on both sides of the bottom. The mounting plates are fastened with connecting rods by bolts, and the connecting rods correspond to the connecting ears attached to the foundation 20. As for the plate 205, the connecting rod is matched with the connecting lug plate and is fastened and connected by bolts. A wall attachment 303 is arranged at intervals of 6 to 9 meters on the tower column 301 , and bolts and pins are used to connect the wall attachment 303 to the connecting ear plate 205 and the tower column 301 to provide support for the tower column 301 .

After the tower column 301 is set, the elevator 302 of the elevator 30 is installed on the guide rail of the tower column 301, and then debugged. According to the actual position of the upper limit switch and the three-phase limit switch, install and adjust the baffle plate and stopper on the top of the tower column 301. Then perform the drop test: (1) During the drop test, no one is allowed in the cage; before the drop test, make sure that the brake of the motor is working normally. (2) Load to the rated load in the cage. Cut off the main power supply, connect the cable of the drop test button box to the special terminal for drop test. (3) Fix the cable of the test button box near the electrical box of the hoisting cage, and place the button box on the ground station through an appropriate place. Make sure the cables do not get caught during the drop test. (4) Evacuate all the people in the cage, close all the cage doors and fence doors; turn on the main power supply, press the button with the rising symbol on the test button box, and drive the cage to rise to a height of about 10M from the ground. (5) Press the button with the drop symbol on the test button box and do not release it. The motor brake is turned on, and the cage begins to fall freely until it reaches the test speed, and the safety drop device operates to stop the cage. The qualified brake sliding distance of the safety fall device is 0.3-1.2M. (Note: If the safety fall device cannot stop the cage when the cage is more than 3M away from the ground station, release the down button immediately. The brake will be braked to prevent the cage from hitting the bottom. (6) Will the safety fall Reset the device. (7) Remove the test cable.

After the test, the reset of the safety fall arrester after the action: (1) After the fall test of the safety fall arrester and during normal operation, every time an action occurs, the safety fall arrester needs to be reset. It is strictly forbidden to continue to operate the elevator before the safety fall device is reset. (2) Inspection before the reset of the safety fall: (3) Whether the brake of the motor is working normally; whether the turbine box and the coupling are working normally. (4) Whether the guide rollers are working normally. (5) Whether the back wheel and the rack are working normally. (6) Whether the micro switch in the safety faller works normally, and the hoisting cage should not start by issuing an upward command before reset. (7) After all the checks before reset are correct, first cut off the power supply; (refer to the factory manual of the safety faller) remove the bolts on the back cover of the safety faller and remove the bolts from the back cover, and use a special wrench to rotate the copper nut until The end of the indicating pin is flush with the rear end face of the safety fall (the micro switch should be connected to the circuit at this time). (8) Install the bolts, back cover and bolts; turn on the power, drive the cage to run upwards for 20 to 30 cm, and reset the centrifugal block of the safety faller. The hanging cage can be put into normal operation.

The elevator 30 is debugged as follows:

(1) The operating environment of the construction elevator is: -20～+40℃, and the wind speed is less than 20m/s.

(2) Check the total power supply voltage, the voltage deviation should be within the range of 380V±5%.

(3) Check the lubrication of each transmission part, and all parts should be refilled with lubricating grease. The construction elevators in use are regularly lubricated. Before lubricating work, the lime sand on the lubricating part should be cleaned first. After the construction elevator is used for the first time for one week (or after 50 hours of operation), the lubricating oil in the reducer should be replaced with new oil of the same type.

(4) Check whether there are any obstacles in the cage and counterweight track.

(5) Check the wear of the gears.

(6) Test each limit switch in turn: single and double cage door switch upper and lower limit switch emergency stop switch.

As shown in FIG. 1 , after the elevator 30 is installed, a steel platform 40 is set on the top of the attached foundation 20 and the top of the special-shaped section 10 to provide a pedestrian passage to the elevator 30 . Setting up the steel platform 40 includes: as shown in FIG. 8 and FIG. 9 , the reinforcement plate 201 is fixedly connected to the outer wall around the top of the attachment foundation 20, and the reinforcement plate 201 is welded and fixed to the attachment foundation 20 through the reserved plug welding hole 2011. On the outer wall; then lay supporting steel plate 202 on the top of the attached foundation 20 and weld it; fasten the supporting steel plate 202 and reinforcing plate 201 through the stiffening plate 2013; There is a retaining wall, and the embedded steel plate is embedded in the construction of the retaining wall; the steel beam 203 is erected on the supporting steel plate 202 and the embedded steel plate, and connected with the supporting steel plate 202 and the embedded steel plate at the bottom of the steel beam 203 The place is welded and fixed, the platform steel plate of the steel platform 40 is laid on the steel beam 203, and welded and fixed with the steel beam 203, the steel platform has just been formed.

In order to solve the problem of the construction personnel on the top of the pit leading to the inner passage of the construction elevator, a special design is carried out for the pedestrian passage of the construction elevator on the top of the pit. One end of the pedestrian passage is designed to be supported by a pre-embedded steel plate on the retaining wall of the pit top, and the other end is supported by a tower crane. The standard section is a steel structure pedestrian walkway with a support.

The pedestrian passage is designed as a simply supported beam steel structure passage, and the design parameters are as follows according to the actual measurement on site: the width of the steel beam is 1.6m, the width of the steel platform is 3.8m, the width of the center of the support is 1.6m, and the allowable live load of the walkway is taken as an insurance. 5KN/m, the design and calculation of the pedestrian passageway uses MIDAS for finite element analysis and calculation, and the steel platform structure system of the passenger and cargo elevator walkway considers the load combination of dead load, live load and wind load to obtain the deformation value of each component in the structural system. There are two situations for the action of live load: one is to consider its uniform action, that is, the balanced distribution of live load; the other is that the live load acts between the main beams and between the main beam and the secondary beam in the direction of one side, that is, unbalanced distribution .

The steel platform of the walkway is erected on the standard section of the tower crane at the bottom of the pit and the pre-embedded parts of the retaining wall support on the cliff wall at the top of the pit. The distance is about 22 meters. The steel platform of the walkway has an area of about 80 square meters and a large span. The height of the roof is about 50m. It is a high-altitude operation, which is very dangerous. It is assembled on the ground and lifted as a whole. The steel platform of the cargo elevator walkway weighs about 14 tons after the overall assembly. It is lifted by one lifting point and two points. The distance from the lifting point to the working radius is about 14 meters (the distance from the lifting point of the steel platform to the retaining wall support on the top of the pit is about 12 meters. Considering the instability of the pit wall of the retaining wall, for the safety of hoisting, the car station needs to be moved back 1 to 2 meters), according to the working radius of the steam crane station and the lifting characteristics of the steam crane, a 100-ton truck crane should be selected for hoisting, and a 16-ton truck crane should be used for ground assembly. The specific steel platform construction steps include:

(1) Measuring and setting out: the level is based on the benchmark line 50 on the steel column of the skirt house on the top of the pit, measures the elevation of the embedded slabs of the two supports, and hits the calculated unified elevation line on the side of the standard section of the tower crane. The ink fountain bounces on the horizontal line on the standard section of the tower crane, as the basis for the installation of the steel beam connecting plate, and the error should be less than 2mm. Take the centerline of the standard section of the tower crane and the centerline of the embedded parts and draw a longitudinal centerline along the longitudinal direction as the datum line of the longitudinal main beam, and the error should be less than 3mm. Pull a transverse centerline perpendicular to the longitudinal centerline, the sag should not exceed 3″. As the datum line of the transverse steel girder.

(2) Acceptance of embedded parts and standard section of tower crane: check and accept the position of embedded parts according to the drawings. If it is out of tolerance, it should be rectified by the construction unit. In addition, the verticality of the standard section of the tower crane attached to the construction elevator must meet the requirements <4/1000, and the tower body must be stable, and it must be signed by Party A and the supervisor for acceptance.

(3) Platform erection: Set up a temporary operating platform at a suitable place close to the installation location, such as welding the tower connecting plate and other construction personnel to stand on the operating platform.

(4) Welding of steel beam connecting plates: according to the placed elevation line and datum line, weld the connecting plates on all tower crane standard sections on the drawing first.

(5) Ground assembly:

1) After the components required for the steel platform of the pedestrian passage are transported to the site, a 16T truck crane is used to unload the goods in the hoisting area, and the steel platform is assembled on the ground in sequence from the main beam to the secondary beam according to the drawings.

2) After the main girder is aligned, install the secondary girder, horizontal support and angle steel stiffener in sequence. For lighter ones, it can also be assembled manually. The height difference between the secondary girder and the main girder is not greater than 2mm. After the frame group of the steel platform is aligned, the overall correction is carried out, the high-strength bolts are fastened and finally screwed, and the secondary beam and the main beam are welded. First, our personnel conduct self-inspection, and report to the supervision unit after meeting the requirements. The supervision, Party A and us Party personnel shall jointly conduct inspection and inspection, and inspect the steel frame level, elevation, vertical and horizontal centerline, and welding quality, which shall meet the specification requirements. Problems were found and dealt with in time, rectified to pass.

3) Rust removal and painting can be carried out after passing the inspection. For unpainted, welded joints, and painted but damaged positions during installation, rust should be removed again, the first coat of primer should be applied, and the second coat of primer should be applied after the paint film is dry, and measured after drying The thickness of the paint film meets the design requirements of the drawings.

4) Patterned steel plate laying: After the steel platform frame is completed, the patterned steel plate can be laid, and the patterned steel plate is mainly laid by manual laying. Lay the corresponding patterned steel plate on the corresponding steel beam according to the size of the drawing, and the patterned steel plate can be fixed by welding. Apply anti-rust paint to welds.

5) Overall hoisting: After the overall assembly is completed, a 100-ton truck crane is used for two-point hoisting, and steel wire ropes are tied. First, a trial hoisting is performed, and then hoisting and installation. It is connected with high-strength bolts at the standard joints of the tower crane, and the retaining wall support is connected with the pre-embedded After the overall hoisting is completed, the steel beam at the standard section of the tower crane will be installed, and the checkered steel plate will be laid after the installation is completed. Finally, the welded joints are repainted with anti-rust paint.

The beneficial effect of the installation method of the lifting device attached to the special-shaped section of the present invention is:

The installation method that the elevator is attached to the attached foundation is adopted to solve the problem that the elevator cannot support the special-shaped section, and when setting up the structure, the bearing capacity of the attached foundation is calculated accordingly, which meets the construction requirements and has safety guarantee. Through the adoption of the attached foundation, the installation structure of the lift has the characteristics of simplicity and ease of operation.

The connection between the elevator and the attached foundation is realized by the cooperation of the attached wall parts and the fixed parts. The attached wall parts exert tension on the channel steel on the fixed part, and the angle steel on the fixed part is set between the two channel steels to support the channel steel. The function can offset the tension on both sides, reduce the tension on the attached foundation, and ensure the stability of the attached foundation. The connection structure between the attached wall parts and the fixed parts is easy to install and the structure is stable, which effectively ensures the overall stability of the elevator.

The top of the attached foundation and the top of the special-shaped section are equipped with a steel platform, which is used as a pedestrian passage, providing a passage from the top of the section to the elevator, and facilitating the passage of people and goods. The steel platform is built between the attached foundation and the pre-embedded steel plate with special-shaped section, and is welded to the attached foundation and the pre-embedded steel plate respectively. It only bears the pressure, which improves the safety and stability of the attached foundation, and at the same time, the pressure is transmitted through the overlapping diffusion, reducing the stress damage to the welding point.

The attached wall device is used to realize the support connection between the attached foundation and the special-shaped section, and the effective support of the attached foundation is realized through the attached wall device. the stability of the support.

The present invention has been described in detail above with reference to the embodiments of the accompanying drawings, and those skilled in the art can make various changes to the present invention according to the above description. Therefore, some details in the embodiments should not be construed as limiting the present invention, and the present invention will take the scope defined by the appended claims as the protection scope of the present invention.

Claims (10)

1. a kind of lowering or hoisting gear being attached to section is it is characterised in that include：

Attached base, is erected on the sidepiece of section and is connected with the support of described section；And

Elevator, the elevator move up and down including king-post and along described king-post, described king-post is erected on the side of described attached base Portion is simultaneously connected with the support of described attached base；

It is erected with steel platform between the top of described attached base and described section；Surrounding at the top of described attached base Outer wall is provided with stiffening plate, lays supporting steel plate, be provided between described supporting steel plate and described stiffening plate on described attached base Multiple stiffeners；The top of described section is provided with pre-embedded steel slab；Described pre-embedded steel slab and described supporting steel plate is added is provided with Girder steel；It is equipped with platform steel plate on described girder steel and form described steel platform；

Described attached base and described king-post are anchored in ground by base structure.

2. it is attached to the lowering or hoisting gear of section as claimed in claim 1 it is characterised in that including two elevator, It is respectively symmetrically the both sides located at described attached base.

3. it is attached to the lowering or hoisting gear of section as claimed in claim 1 it is characterised in that described king-post interval is fixed with Attached wall part, in described attached base, corresponding described attached wall part is provided with fixture, and described fixture is provided with connection otic placode, described company Ear connecting plate is fixedly connected with described attached wall part.

4. it is attached to the lowering or hoisting gear of section as claimed in claim 3 it is characterised in that described fixture includes two Shaped steel part and many securing members, described shaped steel part is respectively arranged on the side connecting described attached wall part in described attached base, described Shaped steel part is provided with connection otic placode；The two ends of described securing member are provided with screw rod, are placed between two described shaped steel parts, described spiral shell Correspondence wears described shaped steel part and screws togather fastening by nut bar respectively.

5. it is attached to the lowering or hoisting gear of section as claimed in claim 1 it is characterised in that fixing in described attached base There is wall-attaching equipment, described section has multiple anchoring pieces in the junction anchoring being connected with described wall-attaching equipment, multiple described It is fixed with anchor plate, described anchor plate is provided with wall-attaching base, the end of described wall-attaching base and described wall-attaching equipment on anchoring piece It is fixedly connected.

6. a kind of installation method of the lowering or hoisting gear being attached to section as any one of claim 1 to 5, it is special Levy and be, including：

On ground, setting supports, with described section, the attached base being connected；And

Set up elevator, the king-post of described elevator is erected on ground, and support and be connected to described attached base, by described liter The elevator of fall machine is installed on described king-post so that described elevator moves up and down along described king-post.

7. it is attached to the installation method of the lowering or hoisting gear of section as claimed in claim 6 it is characterised in that being also included in The top setting steel platform of the top of described attached base and described section：

At the top of described attached base, surrounding outer wall is fixedly connected stiffening plate；

Lay supporting steel plate and fix on described attached base；

Multiple stiffeners are set between described supporting steel plate and stiffening plate；

In the top of described section, pre-embedded steel slab is set；

Set up girder steel on described pre-embedded steel slab and described supporting steel plate,

Lay platform steel plate on described girder steel, described platform steel plate and described girder steel are connected, form described steel and put down Platform.

8. it is attached to the installation method of the lowering or hoisting gear of section as claimed in claim 6 it is characterised in that described king-post Support is connected to described attached base and includes：

Interval setting attached wall part on king-post；

In described attached base, the position setting fixture of corresponding described attached wall part, arranges engaging lug on described fixture Plate；

Described attached wall part is fixedly connected described connection otic placode.

9. it is attached to the installation method of the lowering or hoisting gear of section as claimed in claim 8 it is characterised in that in described attached On the basis of, the position setting fixture of corresponding described attached wall part includes：

Angle steel is provided, screw rod is respectively welded in the two ends of described angle steel and exposes one section screws togather end；

Described angle steel is arranged in described attached base, the corresponding position connecting described attached wall part in end of described angle steel；

There is provided two channel-section steels, on described channel-section steel, corresponding described screw rod offers through hole, the position of corresponding described attached wall part is provided with even Ear connecting plate；

Described screw rod is passed through the through hole on corresponding described channel-section steel, and by nut screw togather described in screw togather and hold two described grooves Steel is fastened respectively to the two ends of described angle steel.

10. it is attached to the installation method of the lowering or hoisting gear of section as claimed in claim 6 it is characterised in that described attached The method the base support described section of connection includes：

Multiple anchoring pieces are anchored at the attachment point of described section；

Fix anchor plate in the end of multiple anchoring pieces；

Wall-attaching base is arranged on described anchor plate；

Wall-attaching equipment is fixedly installed in described attached base, the end of described wall-attaching equipment is connected with corresponding described wall-attaching base Fixing.