CN112681144A - Self-climbing type installation method of steel cable tower - Google Patents
Self-climbing type installation method of steel cable tower Download PDFInfo
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Abstract
The application discloses a self-climbing installation method of a steel cable tower, which comprises the following steps: installing a self-climbing installation system at the top of the installed steel tower segment meeting the height requirement; hoisting the continuous steel tower segment from one side of the steel tower to the top of the installed steel tower segment by using the self-climbing installation system; after the continuous steel tower segment is installed in place, the self-climbing installation system vertically climbs to the next station to install the next continuous steel tower segment; and after the steel cable tower is installed, the self-climbing installation system reversely descends to the initial installation position and is dismantled. This application has used from climbing formula mounting system to carry out the installation of cable tower for the butt joint precision of cable tower obtains control, and the butt joint adjustability of cable tower improves, has reduced the operation degree of difficulty and the complexity of work progress, has also improved the security of construction.
Description
Technical Field
The application relates to the field of road and bridge construction, in particular to a self-climbing type installation method of a steel cable tower.
Background
The linear control of the installation of a cable tower of a cable-stayed bridge or a suspension bridge is very important work, and if the linear deviation of the cable tower is large, the structural stress of the cable tower is influenced, the integral construction quality of the bridge can be influenced, and engineering quality accidents are caused. The existing steel cable tower hoisting is mostly carried out by adopting tower crane hoisting, after the processed and formed steel tower segment is conveyed to a construction platform, a large-tonnage tower crane is adopted to carry out sectional hoisting in place, butt welding forming is carried out, and the tower crane is jacked and attached to a wall along with the increase of the installation height of the cable tower. The main defect of hoisting the cable tower by the tower crane is difficult control of the cable tower line type. Along with the increase of the height of the cable tower, the tower crane and the cable tower must be connected with the wall for multiple times, and the cable tower linear control is difficult due to the uncertainty of the tower crane wall attaching piece on the cable tower stress and the influence of multiple wall attaching iterations.
In addition, other high-altitude operation processes in the installation process of the steel cable tower also need to depend on the tower crane or the wall-attached elevator to transport constructors to the high altitude, and for the construction of the ultrahigh and oversized steel cable tower, the construction process and the construction cost are increased by using the tower crane and the wall-attached elevator which are suitable for engineering projects, and the work efficiency is not favorably improved.
Disclosure of Invention
It is an object of the present application to at least partially overcome the deficiencies of the prior art by providing a self-climbing installation system for a cable tower that is easy to use, and a method for self-climbing installation of a cable tower implemented using the installation system.
In order to achieve the technical purpose, the technical scheme adopted by the application is as follows:
firstly, the self-climbing installation system of the cable tower comprises a self-climbing component, a hoisting component attached to the self-climbing component and a power component installed on the hoisting component; wherein the content of the first and second substances,
the self-climbing assembly comprises a rail attached to the surface of the cable tower and a climbing assembly sliding on the rail;
the hoisting assembly comprises a climbing frame, a hoisting truss arranged at the top of the climbing frame and a movable trolley arranged on the top surface of the hoisting truss and used for pulling a lifting appliance; the climbing frame is bolted to the climbing assembly;
the power assembly is arranged on the hoisting truss and used for executing hoisting and translation processes.
Preferably, the climbing frame semi-surrounds the steel tower segment, and an opening is reserved on the side, extending out, of the lifting truss.
Alternatively, the reserved opening is arranged in the direction of the bridge or in the direction of the transverse bridge.
Further, 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 greater than the sum of the height of one steel tower segment 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.
Furthermore, the frame type top frame comprises two pairs of cross rods and longitudinal rods which are orthogonally spliced into a frame shape, the hoisting truss comprises a hoisting arm and a fixed arm, and the fixed arm is orthogonally connected with the cross rods.
Preferably, the width of the cross-bar is 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 cross bar is provided with a left-hand thread rail, the bottom of the fixing arm is left-hand thread on the left-hand thread rail, and the left-hand thread rail is further provided with a limiting member for locking the relative position of the lifting truss and the cross bar.
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 at the top of the installed steel tower segment meeting the height requirement;
hoisting the continuous steel tower segment from one side of the steel tower to the top of the installed steel tower segment by using the self-climbing installation system;
after the continuous steel tower segment is installed in place, the self-climbing installation system vertically climbs to the next station to install the next continuous steel tower segment;
and after the steel cable tower is installed, the self-climbing installation system reversely descends to the initial installation position and is dismantled.
Preferably, the self-climbing mounting system comprises a self-climbing assembly, a hoisting assembly attached to the self-climbing assembly, and a power assembly mounted on the hoisting assembly; wherein the content of the first and second substances,
the self-climbing assembly comprises a rail attached to the surface of the cable tower and a climbing assembly sliding on the rail;
the hoisting assembly comprises a climbing frame, a hoisting truss arranged at the top of the climbing frame and a movable trolley arranged on the top surface of the hoisting truss and used for pulling a lifting appliance; the climbing frame is bolted to the climbing assembly;
the power assembly is arranged on the hoisting truss and used for executing hoisting and translation processes.
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 segment.
Preferably, the step of disassembling the self-climbing mounting system comprises:
adjusting the fixed position of the lifting truss on the frame type top frame to ensure that the lifting truss does not interfere with the steel cable tower;
reversely driving the self-climbing assembly to enable the whole self-climbing installation system to descend to an initial installation position; and disassembling the self-climbing installation system.
Optionally, adjusting the fixing position of the lifting truss on the frame top frame comprises one of the following modes:
under the condition that a slide 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;
and under the condition that the self-climbing assembly is horizontally arranged between the frame type top frame and the lifting truss, the lifting truss is driven to translate to one side of the frame type top frame by the self-climbing assembly.
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 left-hand buckling track is arranged on a cross rod orthogonal to the lifting truss, the bottom of the lifting truss is left-hand buckled on the left-hand buckling track, and the lifting truss is locked on the left-hand buckling track when a steel rope tower crane assembling procedure is executed.
Or, the self-climbing assembly is horizontally arranged between the frame type top frame and the hoisting truss, and the self-climbing assembly comprises: the self-climbing assembly is arranged on a cross rod of the frame type top frame, which is 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 cable tower crane assembling procedure.
Further, the installed tower segment is installed by a crane.
Furthermore, the continuous steel tower segment is hoisted from one side of the steel cable tower along the bridge direction; and the splicing steel tower segment is transported to a lifting point from the bridge deck.
Or the continuous steel tower segment is hoisted from one side of the transverse bridge of the steel cable tower; and the continuous steel tower segment is transported to a lifting point from the construction trestle.
Compared with the prior art, the method has the following advantages:
(1) the installation system of this application, the utilization is installed the cable tower festival section and is regarded as basic hoist and mount next festival section, need not set up powerful basis alone, can realize climbing certainly, descend, and entire system is convenient for install and demolish.
(2) The utility model provides an installing the system, it is little to climb a self weight, does not need the multilayer to adhere to, and most process does not need the tower crane to participate in, and the cable tower atress is clear and definite, is favorable to cable tower line type control.
(3) The utility model provides an installing the system, but jack-up truss and climb and set up to relative slip between the frame, when this installing the system preparation from before descending, drive jack-up truss adjustment is at the fixed position of climbing a top for jack-up truss and steel cable tower noninterference make this installing the system can realize smoothly from descending, reduce the tower crane and participate in the dismantlement of supplementary this installing the system.
(4) The utility model provides a mounting system climbs the frame and has the multifunctionality, and construction platform is compromise simultaneously to the support, can be used to cable tower welding construction, realizes a multi-purpose.
(5) The installation system can be provided with lifting points along the bridge position and can also be provided with lifting points along the transverse bridge position, and can adapt to various construction environments.
Drawings
Fig. 1 is a construction state diagram of a steel tower segment spliced by hoisting of a self-climbing installation system of a steel cable tower in the present application.
Fig. 2 is a construction state diagram of splicing and splicing steel tower segments by using a self-climbing installation system of a steel cable tower in the application.
Fig. 3 is a top plan structural schematic view of the self-climbing mounting system of the steel cable tower of the present application.
Detailed Description
The present application is described in further detail below with reference to the attached drawings and the detailed description.
The self-climbing installation method of the steel cable tower can be realized through a self-climbing installation system of the steel cable tower, and the self-climbing installation method of the steel cable tower can be executed more efficiently and conveniently 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 are interdependent and mutually conditional.
Referring to fig. 1, before the self-climbing installation method of a cable tower according to the present invention is implemented, the following construction conditions are preferably provided: the foundation cap 1 of the steel cable tower 2 is finished, and a transportation channel of the continuous steel tower segment 22 is built, in the embodiment, the construction trestle 4 is used as the transportation channel of the continuous steel tower segment 22, and the continuous steel tower segment 22 is preferably conveyed to a lifting point by a flat wagon.
The self-climbing mounting system 3 of the steel cable tower of the present application comprises a self-climbing assembly 31, a hoisting assembly 32 attached to the self-climbing assembly 31, and a power assembly 33 mounted on the hoisting assembly 32.
In particular, the self-climbing assembly 31 comprises a track attached to the surface of the wire tower 2, and a climbing assembly sliding on the track. A possible implementation mode is that the self-climbing assembly 31 comprises an anchor cone, an anchor plate, an anchor shoe, a climbing head and a lower supporting leg, a guide rail is fixed through the rail supporting leg, the anchor cone and an embedded plate are integrally arranged in a concrete body, a bearing pin shaft is inserted into a fixing hole of the anchor shoe, a pre-assembled part (such as a hoisting assembly 32) is hung on the bearing pin shaft, a safety pin shaft is inserted, the position of the climbing head is locked, the climbing head is reliably connected with a bearing frame through the pin shaft, a 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 position is limited through a limiting pin. Thus, the climbing assembly refers to the climbing head, the bearing frame and the anchor shoe. In another possible implementation manner, the self-climbing assembly 31 includes an anchoring seat pre-buried in the surface of the structure, a rail attached to the anchoring seat, and a climbing assembly reversely hooked on the rail; 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 jacking seat, an oil cylinder seat connected below the climbing frame jacking seat through a jacking oil cylinder, and a climbing frame guide seat arranged below the oil cylinder seat, wherein the climbing frame jacking seat and the climbing frame guide seat are used for being bolted with an object (such as the hoisting assembly 32) to be lifted.
The power assembly 33 preferably employs a hoisting winch configured to be appropriately loaded according to the weight of the individual steel tower segments, which can be readily implemented by those skilled in the art.
Further, the hoisting assembly 32 comprises a climbing frame 321, a hoisting truss 322 arranged on the top of the climbing frame 321, and a mobile trolley 324 for towing a spreader 323 arranged on the top surface of the hoisting 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 a parallel connection and an inclined strut are arranged between part of adjacent vertical rods 3213, so that the climbing frame 321 semi-surrounds the steel tower segment, and an opening is reserved on one side, into which the continuous steel tower segment 22 needs to be moved. The lifting truss 322 comprises a fixing arm 3222 for fixing the body thereof and a lifting arm 3221 extending to the outside of the projection plane of the bottom surface of the cable tower 2 for performing a lifting process, and the lifting truss 322 is preferably composed of split truss units for facilitating subsequent dismantling. On the lifting truss 322, the power assembly 33 is fixedly arranged on the fixed arm 3222, and extends out of a traction cable to the travelling trolley 324 and the spreader 323 so as to control lowering and lifting of the spreader 323 and also control reciprocating translation of the travelling trolley 324 on the lifting truss 322.
Further, referring to fig. 3, the frame-type top frame includes two pairs of cross bars 3211 and longitudinal bars 3212 which are orthogonally spliced into a frame shape, and if the cross bars 3211 are used as members to which 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 top frame to facilitate the reverse lowering of the self-climbing installation system 3 to the initial installation position, the cross-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 out of interference with the cable tower 2. Further, in order to adjust the position of the lifting truss 322, according to the implementation conditions in the field, the following method may be selected to adjust the position of the lifting truss 322:
firstly, a left-hand buckling track is arranged on the cross bar 3211, the bottom of a fixed arm 3222 of the lifting truss 322 is left-hand buckled on the left-hand buckling track, and when the lifting truss 322 performs a process of lifting and translating a steel tower segment, a limiting member 3223 is arranged between the lifting truss 322 and the left-hand buckling track, so as to lock the relative positions of the lifting truss 322 and the cross bar 3211 and avoid a side-turning accident caused by unbalanced tension on the lifting truss 322; when the position of the lifting truss 322 is adjusted, 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 roof truss, referring to fig. 3, the power assemblies 33 originally fixed on the fixing arms 3222 are respectively installed at the ends of the same side of the pair of cross bars 3211 (or the connection points of the cross bars 3211 and the longitudinal bars 3212), after the locking relationship between the lifting truss 322 and the cross bars 3211 is released, the pulling steel rope is led out from the modified power assembly 33, and the lifting truss 322 is pulled to one side of the cross bars 3211. The lifting truss 322 can be disassembled properly under the condition that construction conditions permit, and the transverse width of the lifting truss 322 is reduced.
The self-climbing assembly 31 is horizontally arranged on the cross bar 3211, as described above, the self-climbing assembly includes a rail and a climbing assembly capable of sliding on the rail, the lifting truss 322 is bolted to the climbing assembly, and the position of the climbing assembly on the rail is locked, that is, the relative positions of the lifting truss 322 and the cross bar 3211 can be locked. When the lifting truss 322 performs the process of lifting and translating the steel tower segment, the lifting truss 322 is locked in the above-mentioned manner, and when the lifting truss 322 performs the 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. The lifting truss 322 may be appropriately disassembled under the condition that the construction conditions permit, for example, the parallel connection in the middle of the lifting truss 322 is removed, so that the lifting truss 322 is divided into two parts along the central axis of the body thereof, and the two parts after being disassembled are respectively translated to the two sides of the cross bar 3211 by the plurality of sets of climbing assemblies respectively.
Thirdly, when a tower crane with the height matched with that of the steel cable tower 2 is required to be arranged in construction, the position of the auxiliary hoisting truss 322 can be adjusted by using the tower crane, if the load of the tower crane is small, the auxiliary power component 33 of the tower crane can be modified, namely, the power component 33 is transferred to the tail end of the cross rod 3211 from the fixing arm 3222; if the tower crane is loaded more heavily, the crane can be used to directly remove the lifting truss 322, and at this time, the lifting truss 322 will not descend to the installation position along with the whole installation system 3. There is also a case where the working environment is not suitable for lifting the lifting truss 322 from high altitude to the ground, for example, in the case of strong wind, 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 cable tower of the present application is detailed:
s1: installing a self-climbing installation system 3 on the top of the installed steel tower segment 21 meeting the height requirement;
after the construction of the bearing platform 1 is completed, the steel tower segments at the root are assembled by using a crane 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 determined by the height of one steel tower segment and the working height of the lifting appliance 323. Specifically, since the self-climbing mounting system 3 is attached to the surface of the steel cable tower 2, the mounting is mainly realized by bolting the vertical rod 3213 and the self-climbing component 31, the length of the vertical rod 3213 mainly determines the mounting height of the self-climbing mounting system 3; a secondary determinant of the installation height of the self-climbing installation system 3 is the lifting appliance 323, the installation position of the lifting appliance 323 of the self-climbing installation system 3 is above the steel tower segment, in order to satisfy the requirement that the lifting appliance 323 can lift one steel tower segment, the height of the vertical rod 3213 is larger than the sum of the height of one steel tower segment and the operation height of the lifting appliance 323, preferably, the height of the vertical rod 3213 is 1.5 to 2.5 times of the height of one steel tower segment in consideration of the stability of the climbing frame 321 of the self-climbing installation system 3 and the horizontal height of the lifting point, therefore, the installed tower segment of the root of the steel pylon 2 for installing the self-climbing installation system 3 comprises at least two steel tower segments, the installed steel tower segment 21 is preferably assembled by a crane, if the installed steel tower segment 21 of the root of the steel pylon 2 adopts an in-situ installation mode, the height of the installed steel tower segment 21 also reaches at least two steel tower segments, as shown in particular in figure 1.
During manufacturing, each steel tower segment needs to be pre-embedded with a member of a track attached to the surface of the steel tower 2, so that the self-climbing installation system 3 can climb smoothly.
S2: hoisting a splicing steel tower segment 22 from one side of the wire tower 2 to the top of the installed steel tower segment 21 by using the self-climbing installation system 3 for installation;
after the installation of the self-climbing installation system 3, the self-climbing installation system self-climbs for a certain distance until the lifting appliance 323 can lift the continuous steel tower segment 22 at the lifting point on one side of the steel tower 2 to the top of the installed steel tower segment 21 for installation. Further, the lifting point is determined by specific construction conditions, and can be generally selected to be arranged in the direction along the bridge or in the direction transverse to the bridge, if the lifting point is arranged in the direction along the bridge, the lifting point can be arranged on the installed bridge floor, the splicing steel tower segment 22 is transported to the lifting point from the bridge floor through a flat car, and further, the splicing steel tower can be transported to the position below the bridge through a barge and then is hoisted to the flat car on the bridge floor; if the lifting point is arranged on the transverse bridge 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 to the lifting point from the construction trestle 4 through a flat car. Correspondingly, the climbing frame 321 of the self-climbing installation system 3 should be provided with an opening for the splicing steel tower segment 22 to be able to translate into the climbing frame 321 after being lifted, so as to realize the butt joint with the installed segment.
The continuous steel tower segment 22 is first vertically lifted under the traction of the lifting appliance 323, and stops being continuously lifted when the bottom of the continuous 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 realize accurate butt joint with the installed steel tower segment 21, as shown in fig. 2.
During butt joint, climb frame 321 itself and can regard as construction platform for the operating personnel to carry out the auxiliary work of accurate butt joint, follow-up operating personnel can be on climbing frame 321 and carry out welded connection between the steel tower festival section to and carry out other construction processes.
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, and optionally, the lifting appliance 323 is used to protect a tool to stabilize the lifting appliance 323 and prevent the lifting appliance 323 from shaking, or the lifting appliance 323 is translated to the gravity 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, the hydraulic assembly inside the climbing assembly is driven, the climbing assembly drives the climbing frame 321 to climb in a stepping mode, the self-climbing installation system 3 climbs to a specified height, and when the next station is reached, the climbing assembly is locked to fix the operation position of the self-climbing installation system 3.
S4: after the steel cable tower 2 is installed, the self-climbing installation system 3 reversely descends to the initial installation position and is dismantled.
The steps S2 and S3 are repeated until the installation of the steel tower segment is completed, and when the self-climbing installation system 3 needs to be disassembled, the self-climbing installation system is preferably driven to descend to the initial installation position for disassembly. The reverse descent process is the reverse of the self-ascent process and is readily understood by those skilled in the art. Before the reverse lowering of the self-climbing installation system 3, the fixing position of the lifting truss 322 on the top frame needs to be adjusted so that the lifting truss 322 and the cable tower 2 do not interfere with each other. The position of the lifting truss 322 on the frame type top frame is adjusted in the same manner as described above, and one of the following modes is selected after the conditions of high-altitude operation, the use cost of equipment and the requirement of construction period are comprehensively considered:
in the case of providing slide rails between the frame-type top frame and the lifting truss 322, modifying the installation position of the power assembly 33, so that the power assembly 33 pulls the lifting truss 322 to translate to one side of the frame-type top frame;
secondly, under the condition that the self-climbing assembly 31 is horizontally arranged between the frame type top frame and the lifting truss 322, the lifting truss 322 is driven to translate to one side of the frame type top frame by the self-climbing assembly 31;
and (III) under the condition that the tower crane is arranged, the power assembly 33 is refitted through the tower crane, or the position of the lifting truss 322 is adjusted, and even the lifting truss 322 is directly dismantled 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 order, the dismantled components can be reused, the surface of the steel cable tower 2 also needs to repair the part provided with the embedded part, and the repair process can be synchronously carried out when the self-climbing installation system 3 descends.
In conclusion, the self-climbing 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 in the construction process are reduced, and the construction safety is also improved. Furthermore, but set up to relative slip between jack-up truss and the frame of climbing, before this installing the system preparation is from descending, drive jack-up truss adjustment is at the fixed position of climbing the frame top for jack-up truss and steel cable tower noninterference make this installing the system can realize from descending smoothly, reduce the tower crane and participate in the dismantlement of supplementary this installing the system.
The above embodiments are only preferred embodiments of the present application, but not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present application should be construed as equivalents and are included in the scope of the present application.
Claims (10)
1. A self-climbing installation method for a cable tower, comprising the steps of:
installing a self-climbing installation system at the top of the installed steel tower segment meeting the height requirement;
hoisting the continuous steel tower segment from one side of the steel tower to the top of the installed steel tower segment by using the self-climbing installation system;
after the continuous steel tower segment is installed in place, the self-climbing installation system vertically climbs to the next station to install the next continuous steel tower segment;
and after the steel cable tower is installed, the self-climbing installation system reversely descends to the initial installation position and is dismantled.
2. The method of claim 1, wherein the self-climbing mounting system comprises a self-climbing assembly, a hoisting assembly attached to the self-climbing assembly, and a power assembly mounted on the hoisting assembly; wherein the content of the first and second substances,
the self-climbing assembly comprises a rail attached to the surface of the cable tower and a climbing assembly sliding on the rail;
the hoisting assembly comprises a climbing frame, a hoisting truss arranged at the top of the climbing frame and a movable trolley arranged on the top surface of the hoisting truss and used for pulling a lifting appliance; the climbing frame is bolted to the climbing assembly;
the power assembly is arranged on the hoisting truss and used for executing hoisting and translation processes.
3. The method of claim 2, wherein the creel comprises a frame-type roof rack and a plurality of vertical rods extending downwardly from the frame-type roof rack, the height of the vertical rods being 1.5 to 2.5 times the height of one steel tower segment.
4. The method of claim 2, wherein the step of disassembling the self-climbing mounting system comprises:
adjusting the fixed position of the lifting truss on the frame type top frame to ensure that the lifting truss does not interfere with the steel cable tower;
reversely driving the self-climbing assembly to enable the whole self-climbing installation system to descend to an initial installation position;
and disassembling the self-climbing installation system.
5. The method of claim 4, wherein adjusting the position of the lifting truss to the frame top frame comprises one of:
under the condition that a slide 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;
and under the condition that the self-climbing assembly is horizontally arranged between the frame type top frame and the lifting truss, the lifting truss is driven to translate to one side of the frame type top frame by the self-climbing assembly.
6. The method of claim 5, wherein a sliding rail is provided between the frame type head frame and the lifting truss, comprising: the frame type top frame is characterized in that a left-hand buckling track is arranged on a cross rod orthogonal to the lifting truss, the bottom of the lifting truss is left-hand buckled on the left-hand buckling track, and the lifting truss is locked on the left-hand buckling track when a steel rope tower crane assembling procedure is executed.
7. The method of claim 5, wherein the horizontal positioning of the self-climbing assembly between the frame headframe and the lifting truss comprises: the self-climbing assembly is arranged on a cross rod of the frame type top frame, which is 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 cable tower crane assembling procedure.
8. The method of claim 1, wherein the installed tower segment is installed by a crane.
9. The method of claim 1, wherein the spliced steel tower segments are hoisted from one side of the cable tower along the bridge; and the splicing steel tower segment is transported to a lifting point from the bridge deck.
10. The method of claim 1, wherein said spliced steel tower segments are hoisted from one lateral side of a cable tower transom; and the continuous steel tower segment is transported to a lifting point from the construction trestle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114855631A (en) * | 2022-05-26 | 2022-08-05 | 中交路桥建设有限公司 | Method for installing multi-beam steel cable tower |
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