CN112681144B - Self-climbing installation method of steel cable tower - Google Patents
Self-climbing installation method of steel cable tower Download PDFInfo
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- CN112681144B CN112681144B CN202011517595.XA CN202011517595A CN112681144B CN 112681144 B CN112681144 B CN 112681144B CN 202011517595 A CN202011517595 A CN 202011517595A CN 112681144 B CN112681144 B CN 112681144B
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Abstract
The application discloses a self-climbing installation method of a steel cable tower, which comprises the following steps of: installing a self-climbing installation system on top of the installed steel tower segment meeting the height requirement; hoisting the continuous steel tower section from one side of the steel cable tower to the top of the installed steel tower section by using the self-climbing installation system for installation; after the splicing steel tower section is installed in place, the self-climbing installation system vertically climbs to the next station to install the next splicing steel tower section; after the steel cable tower is installed, the self-climbing installation system is reversely lowered to an initial installation position and removed. According to the application, the self-climbing type installation system is used for installing the steel cable tower, so that the butt joint precision of the steel cable tower is controlled, the butt joint adjustability of the steel cable tower is improved, the operation difficulty and complexity of the construction process are reduced, and the construction safety is also improved.
Description
Technical Field
The application relates to the field of road and bridge construction, in particular to a self-climbing installation method of a steel cable tower.
Background
The line type control of cable tower installation of cable-stayed bridge or suspension bridge is a very important work, if the line type deviation of cable tower is large, not only the structural stress of cable tower is affected, but also the whole construction quality of bridge can be affected, resulting in engineering quality accident. At present, the steel cable tower crane is mainly hoisted by adopting a tower crane, after the machined and formed steel tower section is conveyed to a construction platform, the steel cable tower crane is hoisted in place by adopting a large-tonnage tower crane section, and is formed by butt welding, and the tower crane is lifted and attached with a wall along with the increase of the installation height of the cable tower. The main disadvantage of using a tower crane to hoist the cable tower is the difficulty in controlling the cable tower line type. As the height of the cable tower increases, the tower crane and the cable tower must be connected by attaching walls for many times, and the cable tower line type control is difficult due to the uncertainty of the tower crane attaching wall piece on the stress of the cable tower and the influence of many times of attaching wall iteration.
In addition, other high-altitude operation procedures in the installation process of the steel cable tower also need to rely on a tower crane or a wall-attached elevator to transport constructors to the high altitude, and for the construction of the ultra-high and ultra-large steel cable tower, the construction procedures and the construction cost are increased by using the tower crane and the wall-attached elevator which are suitable for engineering projects, so that the construction efficiency is not beneficial to improvement.
Disclosure of Invention
The application aims to at least partially overcome the defects of the prior art and provide a self-climbing installation system of a steel cable tower, which is convenient to use, and a self-climbing installation method of the steel cable tower, which is implemented by using the installation system.
In order to achieve the technical purpose, the application adopts the following technical scheme:
firstly, a self-climbing installation system of a steel rope tower comprises a self-climbing assembly, a lifting assembly attached to the self-climbing assembly and a power assembly arranged on the lifting assembly; wherein, the liquid crystal display device comprises a liquid crystal display device,
the self-climbing assembly comprises a track attached to the surface of the steel rope tower and a climbing assembly sliding on the track;
the lifting assembly comprises a climbing frame, a lifting truss arranged at the top of the climbing frame and a movable trolley of a traction lifting appliance arranged on the top surface of the lifting truss; the climbing frame is bolted on the climbing assembly;
the power assembly is arranged on the lifting truss and is used for executing lifting and shifting procedures.
Preferably, the climbing frame semi-surrounds the steel tower segment, and an opening is reserved at one side of the lifting truss extending out.
Optionally, the reserved opening is arranged in a forward bridge direction or a transverse bridge direction.
Further, the climbing frame comprises a frame type top frame and a plurality of vertical rods which downwards extend from the frame type top frame, and the height of each vertical rod is larger than the sum of the height of one steel tower section and the operation height of the lifting appliance.
Preferably, the height of the vertical rod is 1.5-2.5 times of the height of one steel tower segment.
Still further, frame roof-rack includes two pairs of cross bars and the longitudinal bar of orthogonal concatenation frame form, the jack-up truss includes boom and fixed arm, fixed arm with the cross bar quadrature is connected.
Preferably, the cross-bar has a width greater than the sum of the cross-sectional width of the steel tower segment and the cross-sectional width of the lifting truss.
Optionally, the horizontal pole is equipped with the back-up track, the bottom of fixed arm back-up is in on the back-up track, the back-up track still is equipped with the locking the relative position of jack-up truss and horizontal pole locating part.
Further optionally, the cross bar is provided with a self-climbing assembly, the fixing arm is bolted to the climbing assembly of the self-climbing assembly, and the climbing assembly is provided with a limiting piece for locking the relative position of the climbing assembly and the track.
Further, the power assembly is fixed on the fixed arm.
Secondly, a self-climbing installation method of the steel cable tower comprises the following steps:
installing a self-climbing installation system on top of the installed steel tower segment meeting the height requirement;
hoisting the continuous steel tower section from one side of the steel cable tower to the top of the installed steel tower section by using the self-climbing installation system for installation;
after the splicing steel tower section is installed in place, the self-climbing installation system vertically climbs to the next station to install the next splicing steel tower section;
after the steel cable tower is installed, the self-climbing installation system is reversely lowered to an initial installation position and removed.
Preferably, the self-climbing mounting system comprises a self-climbing assembly, a lifting assembly attached to the self-climbing assembly, and a power assembly mounted to the lifting assembly; wherein, the liquid crystal display device comprises a liquid crystal display device,
the self-climbing assembly comprises a track attached to the surface of the steel rope tower and a climbing assembly sliding on the track;
the lifting assembly comprises a climbing frame, a lifting truss arranged at the top of the climbing frame and a movable trolley of a traction lifting appliance arranged on the top surface of the lifting truss; the climbing frame is bolted on the climbing assembly;
the power assembly is arranged on the lifting truss and is used for executing lifting and shifting procedures.
Preferably, the climbing frame comprises a frame type top frame and a plurality of vertical rods extending downwards from the frame type top frame, and the height of each vertical rod is 1.5-2.5 times of the height of one steel tower section.
Preferably, the step of disassembling the self-climbing installation system comprises:
the fixed position of the lifting truss on the frame type top frame is adjusted so that the lifting truss is not interfered with the steel cable tower;
the self-climbing assembly is reversely driven, so that the self-climbing installation system integrally descends to an initial installation position; and disassembling the self-climbing type mounting system.
Optionally, adjusting the fixed position of the lifting truss on the frame-type roof rack includes one of:
under the condition that a sliding rail is arranged between the frame type top frame and the lifting truss, modifying the installation position of the power assembly to enable the power assembly to pull the lifting truss to translate to one side of the frame type top frame;
under the condition that the self-climbing assembly is horizontally arranged between the frame type top frame and the lifting truss, the self-climbing assembly is utilized to drive the lifting truss to translate to one side of the frame type top frame.
Specifically, be equipped with the slide rail between frame roof-rack and the jack-up truss, include: the frame type top frame is characterized in that a back-buckling track is arranged on a cross rod orthogonal to the lifting truss, the bottom of the lifting truss is back-buckled on the back-buckling track, and the lifting truss is locked on the back-buckling track when performing a steel rope tower hoisting procedure.
Or, set up in a horizontal position between frame roof-rack and the lifting truss from climbing subassembly includes: the frame type top frame is characterized in that the self-climbing assembly is arranged on a cross rod orthogonal to the lifting truss, the lifting truss is bolted with the self-climbing assembly, and the self-climbing assembly is locked when the lifting truss performs a steel rope tower lifting procedure.
Further, the installed tower segments are installed by a crane.
Further, the splicing steel tower segment is lifted from one side of the steel cable tower along the bridge; the spliced steel tower segments are transported from the deck to the lifting point.
Or, the spliced steel tower segment is hoisted from one side of the steel cable tower cross bridge; and the continuous steel tower segments are transported from the construction trestle to the lifting point.
Compared with the prior art, the application has the following advantages:
(1) According to the installation system disclosed by the application, the installed cable tower segment is used as a foundation for hoisting the next segment, a strong foundation is not required to be arranged independently, self-climbing and descending can be realized, and the whole system is convenient to install and dismantle.
(2) The installation system of the application has the advantages of small self weight of the climbing frame, no need of multi-layer attachment, no need of tower crane participation in most procedures, clear stress of the cable tower and contribution to linear control of the cable tower.
(3) According to the installation system, the lifting truss and the climbing frame can slide relatively, and before the installation system is ready to descend, the lifting truss is driven to adjust the fixed position at the top of the climbing frame, so that the lifting truss and the steel cable tower do not interfere, the installation system can descend smoothly, and the tower crane is reduced to participate in assisting in disassembling the installation system.
(4) The mounting system has multifunction, and the support simultaneously gives consideration to a construction platform, can be used for welding construction of a cable tower, and realizes multiple purposes.
(5) The mounting system can be provided with the lifting point from the forward bridge position and the lifting point from the transverse bridge position, and can adapt to various construction environments.
Drawings
Fig. 1 is a construction state diagram of a hoisting splicing steel tower segment by using a self-climbing installation system of a steel cable tower in the application.
FIG. 2 is a construction state diagram of splicing steel tower segments by using the self-climbing installation system of the steel cable tower in the application.
Fig. 3 is a schematic top plan view of the self-climbing installation system of the steel rope tower of the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and detailed description.
The self-climbing installation method of the steel cable tower can be realized through the self-climbing installation system of the steel cable tower, and can be more efficiently and conveniently executed by utilizing the self-climbing installation system of the steel cable tower; the self-climbing installation method of the steel cable tower is a use method of a self-climbing installation system of the steel cable tower, the self-climbing installation system of the steel cable tower is equipment implemented by the self-climbing installation method of the steel cable tower, and the self-climbing installation method of the steel cable tower and the self-climbing installation system of the steel cable tower depend on each other and are mutually conditional.
Referring to fig. 1, prior to the implementation of the self-climbing installation method of a wire rope tower according to the present application, the following construction conditions are preferably provided: the base cap 1 of the steel cable tower 2 is finished and a transport channel for the spliced steel tower segments 22 is established, in this embodiment by using the construction trestle 4 as transport channel for the spliced steel tower segments 22, preferably by using a flat wagon for transporting the spliced steel tower segments 22 to the lifting point.
The self-climbing installation system 3 of the rope tower of the present application includes a self-climbing assembly 31, a lifting assembly 32 attached to the self-climbing assembly 31, and a power assembly 33 mounted to the lifting assembly 32.
In particular, the self-climbing assembly 31 comprises a track attached to the surface of the pylon 2, and a climbing assembly sliding on the track. The self-climbing assembly 31 comprises an anchor cone, an anchor plate, an anchor shoe, a climbing head and lower supporting feet, wherein a guide rail is fixed through the track supporting feet, the anchor cone and a buried plate are integrally arranged in a concrete body, a bearing pin shaft is inserted into an anchor shoe fixing hole, a pre-assembled part (such as a lifting assembly 32) is hung on the bearing pin shaft, a safety pin shaft is inserted, the climbing head is locked, the climbing head is reliably connected with a bearing frame through the pin shaft, the lower support is reliably connected with the bearing frame through a bolt, the anchor plate is fixed at the position of the embedded anchor cone, the anchor shoe is hung on the anchor plate, and the limiting pin is used for limiting. Thus, climbing assembly refers to a climbing head, a load bearing frame and an anchor shoe. In another possible implementation, the self-climbing assembly 31 includes an anchor seat pre-buried on the surface of the structure, a track attached to the anchor seat, and a climbing assembly reversely hooked on the track; the climbing assembly is provided with an anti-hook part in clearance fit with the track, and the climbing assembly is fixed with the track through a pin joint. Further, the climbing assembly comprises a climbing frame lifting seat, an oil cylinder seat connected below the climbing frame lifting seat through a lifting oil cylinder and a climbing frame guide seat arranged below the oil cylinder seat, wherein the climbing frame lifting seat and the climbing frame guide seat are used for being bolted with an object (such as a lifting assembly 32) to be lifted.
The power assembly 33 preferably employs a hoist winch configured to accommodate a suitable load based on the weight of the individual steel tower segments, as would be readily recognized by one skilled in the art.
Further, the lifting assembly 32 includes a climbing frame 321, a lifting truss 322 disposed at the top of the climbing frame 321, and a traveling carriage 324 disposed on a traction sling 323 on the top surface of the lifting truss 322. The climbing frame 321 comprises a frame type top frame and a plurality of vertical rods 3213 extending downwards from the frame type top frame, and parallel connection and diagonal bracing are arranged between part of adjacent vertical rods 3213, so that the climbing frame 321 semi-surrounds the steel tower section, and an opening is reserved at one side where the steel tower section 22 needs to be moved into the continuous steel tower section. The lifting truss 322 includes a fixing arm 3222 for fixing the body thereof and a lifting arm 3221 extending beyond a projection plane of the bottom surface of the tower 2 for performing a lifting process, and the lifting truss 322 is preferably formed of a split truss unit for facilitating subsequent disassembly. On the lifting truss 322, the power assembly 33 is fixedly disposed on the fixed arm 3222, and extends a traction cable to the travelling car 324 and the lifting tool 323 to control the lowering and lifting of the lifting tool 323 and also to control the reciprocating translation of the travelling car 324 on the lifting truss 322.
Further, referring to fig. 3, the frame top frame includes two pairs of cross bars 3211 and vertical bars 3212 that are orthogonally spliced into a frame shape, and if the cross bars 3211 are used as members to which the fixing arms 3222 of the lifting truss 322 are connected, specifically, the fixing arms 3222 are orthogonally connected to the cross bars 3211. For subsequent adjustment of the position of the lifting truss 322 on the frame roof frame for the reverse lowering of the self-climbing mounting system 3 to the initial mounting position, the cross-sectional width of the crossbar 3211 is preferably greater than the sum of the cross-sectional width of the cable tower 2 and the cross-sectional width of the lifting truss 322 so that the lifting truss 322 can be translated on the crossbar 3211 to a position that does not interfere with the cable tower 2. Further, to achieve positional adjustment of lifting truss 322, depending on the implementation conditions on site, the following manner may be selected to achieve positional adjustment of lifting truss 322:
firstly, a back-buckling track is arranged on the cross bar 3211, the bottom of a fixed arm 3222 of the lifting truss 322 is back-buckled on the back-buckling track, and when the lifting truss 322 performs the process of lifting and shifting a steel tower segment, a limiting piece 3223 is arranged between the lifting truss 322 and the back-buckling track and used for locking the relative positions of the lifting truss 322 and the cross bar 3211, and the side-turning accident caused by unbalanced pulling force of the lifting truss 322 is avoided; when the lifting truss 322 is adjusted in position, the installation position of the power assembly 33 is modified, so that the power assembly 33 pulls the lifting truss 322 to translate to one side of the frame-type top frame, referring to fig. 3, the power assembly 33 originally fixed on the fixed arm 3222 is respectively installed at the ends of the same side of the pair of crossbars 3211 (or the connection points of the crossbars 3211 and the longitudinal rods 3212), after the locking relationship between the lifting truss 322 and the crossbars 3211 is released, a traction steel rope is pulled from the modified power assembly 33, and the lifting truss 322 is pulled to one side of the crossbars 3211. The lifting truss 322 can be appropriately disassembled under the condition of construction condition permission, so that the transverse width of the lifting truss 322 is reduced.
And (two) the self-climbing assembly 31 is horizontally arranged on the cross bar 3211, as described above, the climbing assembly comprises a track and a climbing assembly capable of sliding on the track, the lifting truss 322 is bolted with the climbing assembly, and the climbing assembly is locked at the track, so that the locking of the relative positions of the lifting truss 322 and the cross bar 3211 can be realized. When the lifting truss 322 performs the process of lifting and translating the steel tower segment, the lifting truss 322 is locked in the manner described above, and when the lifting truss 322 performs position adjustment, the locking relationship between the climbing assembly and the track is released, and the lifting truss 322 is pushed by hydraulic pressure to translate along with the movement of the climbing assembly until the lifting truss moves to one side of the cross bar 3211. Under the condition of construction condition permission, the lifting truss 322 can be disassembled appropriately, for example, the parallel connection in the middle of the lifting truss 322 is disassembled, so that the lifting truss 322 is divided into two parts along the central axis of the body, and the two disassembled parts are respectively translated to the two sides of the cross rod 3211 in opposite directions by a plurality of groups of climbing assemblies.
Thirdly, when a tower crane which is matched with the height of the steel rope tower 2 is required to be arranged in construction, the position of the auxiliary lifting truss 322 can be adjusted by using the tower crane, and if the load of the tower crane is small, the tower crane can be used for modifying the auxiliary power assembly 33, namely the power assembly 33 is transferred from the fixed arm 3222 to the tail end of the cross rod 3211; if the load of the tower crane is large, the lifting truss 322 can be removed directly by the tower crane, and at this time, the lifting truss 322 will not descend to the installation position with the whole installation system 3. In still another situation, if the work environment is not suitable for lifting the lifting truss 322 from above the ground, such as in the case of high winds, the lifting truss 322 may be transferred from the middle of the crossbar 3211 to the end of the crossbar 3211 using a tower crane.
Further, the self-climbing installation method of the steel rope tower of the application is described in detail:
s1: installing a self-climbing installation system 3 on top of an installed steel tower segment 21 meeting height requirements;
after the construction of the bearing platform 1 is completed, the crane is used for assembling the steel tower segments at the root until the installed steel tower segments meet the height requirement for installing the self-climbing installation system 3, and preferably, the installation height of the self-climbing installation system 3 is jointly determined by the height of one steel tower segment and the operation height of the lifting appliance 323. Specifically, since the self-climbing installation system 3 is attached to the surface of the steel tower 2, the installation is mainly achieved by bolting the vertical rod 3213 and the self-climbing assembly 31, and thus the length of the vertical rod 3213 mainly determines the installation height of the self-climbing installation system 3; the secondary determining factor of the installation height of the self-climbing installation system 3 is that the lifting appliance 323 is arranged above the steel tower section, in order to meet the requirement that the lifting appliance 323 can lift one steel tower section, the height of the vertical rod 3213 is larger than the sum of the height of one steel tower section and the operation height of the lifting appliance 323, preferably, the height of the vertical rod 3213 is 1.5-2.5 times of the height of one steel tower section in consideration of the stability of the climbing frame 321 of the self-climbing installation system 3 and the horizontal height of a lifting point, therefore, the installed tower section of the root of the steel cable tower 2 for installing the self-climbing installation system 3 at least comprises two steel tower sections, the installed steel tower sections 21 are preferably assembled by a crane, and if the installed steel tower section 21 of the root of the steel cable tower 2 adopts an in-situ installation mode, the height of the installed steel tower section is equal to at least two steel tower sections, as shown in particular in fig. 1.
Each steel tower segment requires pre-buried installation of the components of the track attached to the surface of the steel tower 2 at the time of manufacture, so that the self-climbing installation system 3 can climb smoothly.
S2: hoisting the spliced steel tower segment 22 from one side of the steel rope tower 2 to the top of the installed steel tower segment 21 by using the self-climbing installation system 3 for installation;
the self-climbing installation system 3 is installed, and climbs for a certain distance until the lifting appliance 323 can lift the continuous steel tower section 22 at the lifting point on one side of the steel cable tower 2 to the top of the installed steel tower section 21 for installation. Further, the lifting point is determined by specific construction conditions, and can be set in the forward direction or the transverse direction, if the lifting point is set in the forward direction, the lifting point can be set on an installed bridge deck, the continuous steel tower segment 22 can be transported from the bridge deck to the lifting point through a flat car, further, the continuous steel tower can be transported to the under-bridge through a barge and then lifted to the flat car of the bridge deck; if the lifting point is arranged in the transverse direction, the lifting point is arranged on a special platform, and the special platform is connected with the construction trestle 4, so that the continuous steel tower segment 22 is transported from the construction trestle 4 to the lifting point through a flat car. Correspondingly, the climbing frame 321 of the self-climbing installation system 3 should be provided with an opening for the subsequent steel tower segment 22 to translate into the climbing frame 321 after being lifted, so as to realize the butt joint with the installed segment.
The splicing steel tower segment 22 is lifted vertically under the traction of the lifting appliance 323, stops lifting when the bottom of the splicing steel tower segment is slightly higher than the top of the installed steel tower segment 21, then translates to the position above the top of the installed steel tower segment 21 along the direction angle of the longitudinal axis of the lifting truss 322, slowly descends, and adjusts while descending to achieve accurate butt joint with the installed steel tower segment 21, as shown in fig. 2.
During butt joint, the climbing frame 321 can be used as a construction platform for operators to carry out auxiliary work of accurate butt joint, and subsequent operators can carry out welding connection between the steel tower sections on the climbing frame 321 and carry out other construction procedures.
S3: after the splicing steel tower segment 22 is installed in place, the self-climbing installation system 3 vertically climbs to the next station to install the next splicing steel tower segment 22;
before the self-climbing installation system 3 climbs, the lifting appliance 323 should be protected to prevent the lifting appliance 323 from being damaged or surrounding components from being damaged, optionally, the lifting appliance 323 is protected by utilizing a lifting appliance 323 protecting tool to stabilize the lifting appliance 323 to prevent the lifting appliance 323 from shaking, or the lifting appliance 323 is translated to the gravity center line of the self-climbing installation system 3, so that the shaking degree of the lifting appliance 323 can be reduced.
When the self-climbing installation system 3 climbs, a hydraulic component in the climbing component is driven, so that the climbing component drives the climbing frame 321 to climb in a stepping mode, the self-climbing installation system 3 climbs to a designated height, and when the self-climbing installation system reaches the next station, the climbing component is locked to fix the working position of the self-climbing installation system 3.
S4: after the steel cable tower 2 is installed, the self-climbing installation system 3 is reversely lowered to the initial installation position and removed.
The steps S2 and S3 are repeated until the installation of the steel tower segment is completed, and the self-climbing installation system 3 is preferably driven to reversely descend to the initial installation position for the dismantling when the dismantling is required. The reverse descent process is the reverse of the self-climbing process, as will be readily appreciated by those skilled in the art. Before the self-climbing installation system 3 descends in the reverse direction, the fixed position of the lifting truss 322 on the frame type roof frame needs to be adjusted so that the lifting truss 322 does not interfere with the wire tower 2. The position of the lifting truss 322 is adjusted in the frame type top frame in the same manner as described above, and one of the working conditions, the equipment use cost and the construction period requirement is comprehensively considered and then selected:
modifying the mounting position of the power assembly 33 with a sliding rail between the frame top frame and the lifting truss 322 so that the power assembly 33 pulls the lifting truss 322 to translate to one side of the frame top frame;
(II) in the case of horizontally arranging the self-climbing assembly 31 between the frame type top frame and the lifting truss 322, driving the lifting truss 322 to translate to one side of the frame type top frame by using the self-climbing assembly 31;
and (III) in the case of a tower crane, the power assembly 33 is modified by the tower crane or the position of the lifting truss 322 is adjusted, and even the lifting truss 322 is directly removed at high altitude.
After the self-climbing installation system 3 returns to the initial installation position, the self-climbing installation system is dismantled according to the reverse order of the installation sequence, the dismantled components can be reused, the surface of the steel cable tower 2 also needs to repair the part with the embedded part, and the repair process can be synchronously carried out when the self-climbing installation system 3 descends.
In summary, the self-climbing type installation system is used for installing the steel cable tower, so that the butt joint precision of the steel cable tower is controlled, the butt joint adjustability of the steel cable tower is improved, the operation difficulty and complexity of the construction process are reduced, and the construction safety is improved. Further, the lifting truss and the climbing frame can slide relatively, before the installation system is ready to descend, the lifting truss is driven to adjust the fixed position at the top of the climbing frame, so that the lifting truss and the steel cable tower do not interfere, the installation system can descend smoothly, and the tower crane is reduced to assist in the disassembly of the installation system.
The above embodiments are preferred embodiments of the present application, but are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the present application should be made therein and are intended to be equivalent substitutions within the scope of the present application.
Claims (8)
1. The self-climbing installation method of the steel cable tower is characterized by comprising the following steps of:
installing a self-climbing installation system on top of the installed steel tower segment meeting the height requirement;
hoisting the continuous steel tower section from one side of the steel cable tower to the top of the installed steel tower section by using the self-climbing installation system for installation;
after the splicing steel tower section is installed in place, the self-climbing installation system vertically climbs to the next station to install the next splicing steel tower section;
after the steel cable tower is installed, the self-climbing installation system reversely descends to an initial installation position and is dismantled;
the self-climbing installation system comprises a self-climbing assembly, a lifting assembly attached to the self-climbing assembly, and a power assembly mounted on the lifting assembly; wherein, the liquid crystal display device comprises a liquid crystal display device,
the self-climbing assembly comprises a track attached to the surface of the steel rope tower and a climbing assembly sliding on the track;
the lifting assembly comprises a climbing frame and a lifting truss arranged at the top of the climbing frame; the climbing frame is bolted on the climbing assembly; the climbing frame comprises a frame type top frame and a plurality of vertical rods which extend downwards from the frame type top frame, the frame type top frame comprises two pairs of cross rods and longitudinal rods which are spliced into a frame shape in an orthogonal mode, the vertical rods are bolted with the self-climbing assembly, the self-climbing installation system is attached to the surface of a steel cable tower through the vertical rods, the height of each vertical rod is larger than the sum of the height of one steel tower section and the operation height of a lifting appliance, parallel connection and diagonal bracing are arranged between part of adjacent vertical rods, so that the climbing frame semi-surrounds the steel tower section, and an opening is reserved at one side of the steel tower section; the frame type top frame and the lifting truss are horizontally arranged on a cross rod orthogonal to each other, the lifting truss is bolted with the self-climbing assembly, and the self-climbing assembly is locked when the lifting truss performs a steel rope tower hoisting procedure; before the self-climbing installation system descends reversely, the self-climbing assembly is utilized to drive the lifting truss to translate to one side of the frame type top frame, so that the lifting truss is not interfered with the steel cable tower.
2. The method of claim 1, wherein,
the hoisting assembly comprises a mobile trolley of a traction lifting appliance arranged on the top surface of the hoisting truss; the power assembly is arranged on the lifting truss and is used for executing lifting and shifting procedures.
3. The method of claim 2, wherein the vertical bar has a height of 1.5 to 2.5 times the height of one steel tower segment.
4. The method of claim 2, wherein the step of removing the self-climbing installation system comprises:
the self-climbing assembly is reversely driven, so that the self-climbing installation system integrally descends to an initial installation position; and disassembling the self-climbing type mounting system.
5. The method of claim 1, wherein a slide rail is provided between the frame roof rack and the lifting truss, comprising: the frame type top frame is characterized in that a back-buckling track is arranged on a cross rod orthogonal to the lifting truss, the bottom of the lifting truss is back-buckled on the back-buckling track, and the lifting truss is locked on the back-buckling track when performing a steel rope tower hoisting procedure.
6. The method of claim 1, wherein the installed tower segment is installed by a crane.
7. The method of claim 1, wherein the spliced tower segment is lifted from a forward side of the rope tower bridge; the spliced steel tower segments are transported from the deck to the lifting point.
8. The method of claim 1, wherein the spliced steel tower segment is hoisted from a side of a cable tower cross-bridge; and the continuous steel tower segments are transported from the construction trestle to the lifting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517595.XA CN112681144B (en) | 2020-12-21 | 2020-12-21 | Self-climbing installation method of steel cable tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517595.XA CN112681144B (en) | 2020-12-21 | 2020-12-21 | Self-climbing installation method of steel cable tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112681144A CN112681144A (en) | 2021-04-20 |
| CN112681144B true CN112681144B (en) | 2023-08-18 |
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Family Applications (1)
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