Device for assisting in translational transportation and installation of overweight steel column and construction method
Technical Field
The invention relates to the field of underground building construction, in particular to a device for assisting the translational transportation and installation of an overweight steel column and a construction method.
Background
The tower crane hoisting device has the advantages that column members exist at the far position of the tower crane hoisting coverage range in the steel structure construction, the safe hoisting capacity exceeding the range is realized, and partial beam-column joint areas and cross section conversion areas can not be segmented according to the specification and design requirements, so that the overweight is caused by the large cross section and the member length.
The following solutions are commonly used at present: one method is to adopt a large-tonnage crane to carry out fixed-point hoisting on the edge of a foundation pit, but the method is often not economical, because the large turning radius has large demand on the hoisting capacity of the crane, and the mechanical cost is greatly increased; one is to use a truck crane to enter the concrete floor for operation, but sometimes the floor load can not meet the load requirement when the crane is operated, and the construction cost can be increased when the basement returns to the top. Both methods have various requirements on operation conditions and cannot meet the requirements on construction safety and construction period.
Disclosure of Invention
The invention aims to provide a device for assisting the translational transportation and installation of an overweight steel column and a construction method, and aims to solve the technical problems of insufficient hoisting weight in the coverage range of a tower crane, high labor intensity of transportation materials, poor safety, high construction cost and the like.
In order to achieve the purpose, the invention adopts the following technical scheme: a device for assisting in translational transportation and installation of an overweight steel column comprises a well-shaped frame 1, a lifting hand-pulling chain block 6 arranged at the upper part of the well-shaped frame 1, a trestle structure, a dragging hand-pulling chain block 7 and a conveyer assembly, wherein the well-shaped frame 1 comprises first stand columns 8, first transverse connecting rods 4 and carrying rods 2, the cross section of the well-shaped frame 1 is square, the four stand columns are respectively arranged at four corners of the square, the bottoms of the first stand columns 8 are arranged on a foundation, the first transverse connecting rods 4 are arranged between every two adjacent first stand columns 8, and the top surfaces of the first transverse connecting rods 4 are flush with the top surfaces of the first stand columns 8; the hoisting hand-pulling chain block 6 is arranged at the center of the first transverse connecting rod 4;
the trestle structure comprises second upright posts 3 and a track structure, the track structure comprises sliding tracks 10, supporting tracks 11 and second connecting rods, the two supporting tracks 11 are arranged in parallel at intervals, the second upright posts 3 are arranged on the lower end face of the supporting tracks 11 at intervals, the tops of the second upright posts 3 are fixedly connected with the lower end face of the supporting tracks 11, and the bottoms of the second upright posts 3 are arranged on a foundation; the sliding rails 10 are fixedly arranged on the supporting rails 11, and a second connecting rod is arranged between every two adjacent supporting rails 11;
the transporter component comprises a transporter body 5 and a rectangular bearing plate 12, the four transporter bodies 5 are symmetrically arranged at four corners of the lower end surface of the bearing plate 12, and the transporter body 5 is in sliding connection with the sliding rail 10; the track structure comprises a dragging section and a free section, the dragging section penetrates through the well-shaped frame 1, the end of the dragging section is arranged on the outer side surface of the well-shaped frame 1, and a dragging hand-pulling inverted chain 7 is arranged at the end position of the dragging section;
the adapting rod 2 is arranged under the first transverse connecting rod 4 and on one side far away from the free section of the track structure, and the end of the dragging section is erected on the upper end surface of the adapting rod 2.
Further, the receiving plate 12 is made of a steel plate having a size of 20X 1000 mm.
Furthermore, the well frame 1 is made of HW150 × 150 section steel.
Furthermore, the trestle structure adopts HW150 × 150 shaped steel.
Further, the speed of the drag process of the hand-pulling chain block is less than 1 m/min.
Further, the distance between two adjacent support rails 11 is adapted to the width of the bearing plate 12.
Furthermore, a stiffening rib is arranged at the corner between the first upright post 8 and the first transverse connecting rod 4.
Further, the first upright post 8 and the second upright post 3 both adopt H-shaped steel of HW200 x 200; the height of the second upright 3 is 1000 mm.
Further, the distance between the support rails 11 is 800-1000 mm.
Further, the thickness of the first transverse bar 4 is at least 300 mm.
Further, the length of the bearing rod 2 is 1400 mm; the height of the bearing rod 2 from the foundation is 1000 mm.
Further, the height of the first upright post 8 is 3450 mm.
The invention also provides a construction method of the device for assisting the translational transportation and installation of the overweight steel column, which comprises the following specific steps:
the method comprises the following steps: installing a derrick 1;
step two: installing a trestle structure and paving a track structure;
step three: installing a transporter assembly;
step four: mounting the steel column 9 to the transporter assembly using a tower crane wire rope 13;
step five: the steel column 9 is moved to the position right above the installation positioning point through the matching of the hand-pulling chain block and the tower crane;
step six: slightly lifting the steel column 9 through a chain block preset on the derrick 1, and loosening the lifting point of the tower crane and the steel column 9;
step seven: removing a part of the track beam;
step eight: operating a hand-pulling chain block to install the steel column 9;
step nine: and removing the tool and finishing the installation.
The invention has the beneficial effects that:
the invention provides a device and a construction method for assisting the translational transportation and installation of an overweight steel column, aiming at solving the problem of insufficient hoisting weight in the coverage range of a tower crane, and the device and the construction method can be manufactured in batches, assembled quickly on site, have light dead weight, are convenient to move, can adapt to various operating conditions, play a role in reducing labor intensity, improving efficiency, saving cost and the like, and simultaneously meet the safety protection requirement.
According to the device and the construction method for assisting the translational transportation and installation of the overweight steel column, the overweight steel column is installed on the floor, when the tower crane cannot meet the lifting weight requirement and has no other better scheme, the method can fully utilize the flat floor as an operation surface, the tower crane is used as an auxiliary tool, a large amount of machinery and manpower are not required to be input, and meanwhile, the safety and the high efficiency of the installation process of the steel column are guaranteed, so that a large amount of cost is saved.
3, the economic benefit is more, and the product is not limited by regional environment when being obviously used, is prepared from local materials and is convenient to prepare.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a structural schematic diagram of a device for assisting the translational transportation and installation of overweight steel columns.
Fig. 2 is a side view of the super heavy steel columns disposed on the transporter.
Fig. 3 is a schematic view of the derrick installation of step one.
Fig. 4 is a schematic diagram of a second step of mounting a trestle structure and laying a track structure.
Fig. 5 is a schematic view of a step three installation mover assembly.
Fig. 6 is a schematic view of the installation of the four steel columns to the transporter at step four.
Fig. 7 is a schematic diagram of the steel column moving to a position right above the installation positioning point through the matching of the hand-pulling chain block and the tower crane in the fifth step.
Fig. 8 is a schematic diagram of step six.
Fig. 9 is a bottom view angle diagram of step six.
Fig. 10 is a schematic diagram of a step seven partial track removal.
Fig. 11 is a schematic diagram of step eight removing a portion of the track 2.
FIG. 12 is a schematic diagram of the ninth removal tool.
Fig. 13 is a perspective view before the tool is removed.
Fig. 14 is a structural top view of the device for assisting the translational transportation and installation of the overweight steel column.
FIG. 15 is a schematic view of a structure with steel columns disposed on a trestle.
Fig. 16 is a schematic view of the placement of the steel columns on the transporter body.
FIG. 17 is a schematic closing view of the steel column in place for the derrick.
FIG. 18 is a schematic view of a steel column after installation.
Fig. 19 is a side view of the body of the transporter of fig. 5.
Reference numerals: the device comprises a 1-derrick, a 2-bearing rod, a 3-second upright post, a 4-first transverse connecting rod, a 5-transporter body, a 6-hoisting hand-pulling chain block, a 7-dragging hand-pulling chain block, a 8-first upright post, a 9-steel column, a 10-sliding rail, a 11-supporting rail, a 12-bearing plate and a 13-tower crane steel cable.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Examples
The design idea of the tool is specifically described as follows: through calculation, HW150 steel sections are selected as main materials to manufacture the well frame 1 and the trestle structure, and the field connection mode is designed according to bolting. Before installation, the steel columns 9 are assembled at the positioning points to form the derrick 1, and the steel beams of the derrick 1 are not installed in the moving direction corresponding to the steel columns 9; and laying a trestle to the steel column 9 in-place point along the central point of the tower crane, wherein the length of the trestle is fixed according to the safe hoisting range of the tower crane, and channel steel is arranged on the trestle as a track. Referring to fig. 19, 4 conveyors are arranged in a track, a conveyor body 5 is connected and cooperated with a 20 × 1000 × 1000 bearing steel plate, a steel column 9 is installed on the conveyor within a safe lifting range by a tower crane, the steel column 9 is kept stable by the aid of the tower crane, a hand-pulled chain arranged at the end of the track is dragged and moved into a derrick 1, the process is kept until the steel column 9 is positioned at the center of the derrick 1 and does not exceed 1m/min, the steel beam of the derrick 1 is closed at the moment, the derrick 1 forms a frame, the hand-pulled chain is connected with preset connection points of the steel column 9 (the connection points are positioned at the upper part of the gravity center point of the steel column 9 and ensure that the steel column 9 cannot overturn during lifting), the steel column 9 is lifted and separated from the conveyor by tensioning a chain block (the tower crane does not participate in stress at the moment), the conveyor and a lower supporting track 11 is dismantled, and controlling the chain block to enable the steel column 9 to be installed in place.
Referring to fig. 1, 2 and 18, the invention provides a device for assisting the translational transportation and installation of an overweight steel column, which comprises a derrick 1, a hoisting hand-pulled chain block 6 arranged at the upper part of the derrick 1, a trestle structure, a dragging hand-pulled chain block 7 and a conveyer assembly, wherein the derrick 1 comprises a first upright post 8, a first transverse connecting rod 4 and a carrying rod 2, the cross section of the derrick 1 is square, the first upright post 8 is provided with four parts which are respectively arranged at four corners of the square, the bottom of the first upright post 8 is arranged on a foundation, the first transverse connecting rod 4 is arranged between two adjacent first upright posts 8, and the top surface of the first transverse connecting rod 4 is flush with the top surface of the first upright post 8; the hoisting hand-pulling chain block 6 is arranged at the center of the first transverse connecting rod 4; and a stiffening rib is further arranged at the included angle between the first upright post 8 and the first transverse connecting rod 4.
The trestle structure comprises second upright posts 3 and a track structure, the track structure comprises two support tracks 11, a sliding track 10 and second connecting rods, the two support tracks 11 are arranged in parallel at intervals, the second upright posts 3 are arranged on the lower end face of the support tracks 11 at intervals, the tops of the second upright posts 3 are fixedly connected with the lower end face of the support tracks 11, and the bottoms of the second upright posts 3 are arranged on a foundation; the sliding rails 10 are fixedly arranged on the supporting rails 11, and a second connecting rod is arranged between every two adjacent supporting rails 11;
the transporter component comprises a transporter body 5 and a rectangular bearing plate 12, the four transporter bodies 5 are symmetrically arranged at four corners of the lower end surface of the bearing plate 12, and the transporter body 5 is in sliding connection with the sliding rail 10; the track structure comprises a dragging section and a free section, the dragging section penetrates through the well-shaped frame 1, the end of the dragging section is arranged on the outer side surface of the well-shaped frame 1, and a dragging hand-pulling inverted chain 7 is arranged at the end position of the dragging section; the distance between two adjacent support rails 11 is adapted to the width of the bearing plate 12.
The adapting rod 2 is arranged under the first transverse connecting rod 4 and on one side far away from the free section of the track structure, and the end of the dragging section is erected on the upper end surface of the adapting rod 2.
The bearing plate 12 may be a 20X 1000mm steel plate. The well frame 1 and the trestle both adopt HW150 x 150 section steel.
The speed of the drag process of the hand-pulling chain block is less than 1 m/min. The first upright post 8 and the second upright post 3 both adopt H-shaped steel of HW200 x 200; the height of the second upright 3 is 1000 mm. The distance between the support rails 11 is 800-. The thickness of the first transverse bar 4 is at least 300 mm. The length of the bearing rod 2 is 1400 mm; the height of the bearing rod 2 from the foundation is 1000 mm. The height of the first upright post 8 is 3450 mm.
Referring to fig. 3-14 and 17, the construction steps are as follows:
the method comprises the following steps: installing a derrick 1;
step two: installing a trestle structure and paving a track structure;
step three: installing a transporter assembly;
step four: the steel column 9 is mounted to the transporter assembly;
step five: the steel column 9 is moved to the position right above the installation positioning point through the matching of the hand-pulling chain block and the tower crane;
step six: slightly lifting the steel column 9 through a chain block preset on the derrick 1, and loosening the lifting point of the tower crane and the steel column 9;
step seven: removing a part of the track beam;
step eight: operating a hand-pulling chain block to install the steel column 9;
step nine: and removing the tool and finishing the installation.
The benefits are as follows: cost comparison of each process:
according to the working radius of a crane of 40m, a 200T truck crane is needed to be adopted for lifting 10 tons of heavy steel columns 9, the Beijing market price is about 1.5-2 ten thousand yuan per machine shift, 1 machine shift is used, the pure mechanical cost is 1.5 ten thousand yuan, and the total cost of labor and scattered cost is about 2 ten thousand yuan;
the return of the basement makes the cost of the scheme of the operation on the upper floor of the crane increase more obviously, firstly, the return of the basement uses a large number of scaffolds and occupies the lower floor operation space, the cross construction of other specialties is influenced, the investment of a 25T truck crane and the investment of labor cost are inevitable, and the whole crane is not economical.
As shown in fig. 18, the overweight steel column 9 is installed on the floor, when the tower crane cannot meet the lifting weight requirement and has no other better scheme, the method can fully utilize the flat floor as the operation surface, the tower crane is used as an auxiliary tool, a large amount of machinery and manpower are not required to be input, and meanwhile, the safety and the high efficiency of the installation process of the steel column 9 are ensured, so that a large amount of cost is saved.
The construction method comprises the following steps: the material (calculated according to the height of a well frame of 1m and the length of a trestle of 15 m) is about 4 tons 5000 yuan/ton =2 ten thousand yuan, the chain block is 3 stations 1000=3000 yuan, the labor cost and the auxiliary material cost are 2000 yuan, the total is 2.5 ten thousand yuan, the apparent cost is slightly high, but besides the expenditure of the labor cost, the chain block and the auxiliary material are mostly owned by construction teams, the cost is not counted, the input main material can be recycled, and the waste can not be caused.
And one project can inevitably have the same situation at a plurality of places, and the economic benefit of using the construction method is more obvious; the large-tonnage crane in the market is relatively resource-deficient, and the condition that no crane can be used in some areas can also happen, and the construction method is not limited by regional environment, is made of local materials and is convenient to manufacture. The lifting hand power chain block 6 is arranged in a conventional mode.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.