CN108166396B - Prestress steel wire bundle installation and construction method for tower column on cable tower and steel frame structure - Google Patents
Prestress steel wire bundle installation and construction method for tower column on cable tower and steel frame structure Download PDFInfo
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- CN108166396B CN108166396B CN201711446204.8A CN201711446204A CN108166396B CN 108166396 B CN108166396 B CN 108166396B CN 201711446204 A CN201711446204 A CN 201711446204A CN 108166396 B CN108166396 B CN 108166396B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention provides a method for installing a prestressed steel wire bundle of a tower column on a cable tower, which comprises the following steps: based on design requirements, fixedly mounting corresponding framework upright posts at preset positions of the assembly jig frame, and fixedly connecting the framework upright posts through framework parallel connection so as to assemble a stiff framework meeting the design requirements; under non-high altitude construction environment, with a plurality of prestressing wire bundles of preset line type fixed mounting in stagger on the stiffness skeleton stand and skeleton parallel connection installed position department realizes that prestressing wire bundles are swift, accurate location installation, under the prerequisite of guaranteeing construction quality, save time for the construction progress. The construction method has the advantages that the integral hoisting of the stiff framework and the prestressed steel wire bundles is achieved, the work load of overhead operation is reduced, the safety risk is reduced, the steel frame structure is further provided, the prestressed steel wire bundles are arranged on the stiff framework in a pre-positioning mode, collision between steel bars of a cable tower and the steel wire bundles is avoided, and the positioning difficulty of the steel wire bundles is reduced.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a method for installing a prestressed steel wire bundle of a tower column on a cable tower, a method for constructing the tower column on the cable tower and a steel frame structure thereof.
Background
The cable tower anchoring area of the large-span cable-stayed bridge mainly bears stay cable force and Liang Hezai, and because the cable force is large and the anchoring points are concentrated, the stress distribution in the anchoring area is relatively complex, in order to improve the horizontal bearing capacity of the anchoring area and meet the requirement of crack resistance, the anchoring area is usually provided with circumferential prestress or groined prestress, and the tension area stores compressive stress so as to improve structural stress.
The existing prestress steel wire bundles of the cable tower are usually positioned on site before concrete pouring, and are installed on a prestress pipeline in a penetrating way after concrete pouring. The construction method is generally suitable for the conditions that the number of the prestressed steel wire bundles is not large or the interval between the adjacent prestressed steel wire bundles is large and enough operation space exists. The engineering is that the cable tower is prestressed in the circumferential direction, a climbing formwork is adopted for a tower column on the cable tower, the construction site is narrow in space and needs to be moved for operation, the safety risk is high, the number of prestressed steel wire bundles is more, the distance between adjacent prestressed steel wire bundles is smaller (the distance is 25-50 cm), the operable space is narrow, the cable tower is dense in steel bars and is easy to collide with the prestressed steel wire bundles, and the positioning difficulty of a steel wire bundle pipeline is increased.
Disclosure of Invention
The invention aims to provide a method for installing a prestressed steel wire bundle of a tower column on a cable tower, which realizes quick and accurate positioning and installation of the prestressed steel wire bundle, avoids collision between steel bars of the cable tower and the steel wire bundle, reduces the positioning difficulty of the steel wire bundle, saves time and accelerates the construction progress on the premise of ensuring the construction quality.
Still another object of the present invention is to provide a construction method of a tower column on a cable tower, which reduces overhead work workload and reduces safety risks by integrally hoisting a stiff skeleton and a prestressed wire bundle.
The invention further aims to provide a steel frame structure of the tower column on the cable tower, which is characterized in that the prestressed steel wire bundles are arranged on the stiff framework in a pre-positioning way, so that the prestressed steel wire bundles are arranged quickly and accurately, the conflict between the cable tower steel bars and the steel wire bundles is avoided, the positioning difficulty of the steel wire bundles is reduced, the time is saved, and the construction progress is accelerated on the premise of ensuring the construction quality.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for installing a prestressed steel wire bundle of a tower column on a cable tower, which comprises the following steps: assembling the stiff framework, based on design requirements, fixedly installing corresponding framework upright posts at preset positions of the assembled jig frame, and fixedly connecting the framework upright posts through framework parallel connection to assemble the stiff framework meeting the design requirements; and (3) positioning and installing the prestressed wire bundles, wherein a plurality of prestressed wire bundles of preset line type are fixedly installed on the stiff framework according to design requirements in a non-overhead working environment, and the positions where the framework upright posts and the framework are installed are staggered in parallel.
Further, before the stiff skeleton assembling step, the method further comprises the following steps: and carrying out 1:1 projection on the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines on the assembly jig frame so as to accurately position the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines.
Further, in the step of fixedly mounting each corresponding framework upright post on each preset position of the assembly jig frame, the method specifically comprises the following steps: and limiting and fixedly installing corresponding framework upright posts at each preset position of the assembly jig frame through angle steel.
Further, before the step of assembling the stiff framework, an operation platform is erected, and an operation platform is erected on the outer ring of the assembling jig frame, so that the stiff framework is assembled on the assembling jig frame.
Preferably, the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection are limited by a scissor stay.
Further, the error between the vertical distance of each two adjacent pre-stressed steel wire bundles and the design requirement is not more than 5mm, and the error between the horizontal distance of each two adjacent pre-stressed steel wire bundles and the design requirement is not more than 3mm.
Preferably, the design requirement distance of each two adjacent pre-stressed steel wire bundles is 25-50cm, and the design requirement distance of each two adjacent pre-stressed steel wire bundles is 30cm.
Correspondingly, the invention also provides a construction method of the tower column on the cable tower, which comprises the steps of assembling a plurality of framework upright posts, framework parallel connection and prestressed steel wire bundles into an upper tower column steel frame structure by utilizing the prestressed steel wire bundle installation method of the tower column on the cable tower according to any technical scheme; and hoisting the upper tower column steel frame structure to a position designated by a design requirement by utilizing a lifting appliance, and installing and fixing.
Further, after the lifting device is used for lifting the upper tower column steel frame structure to a position designated by a design requirement, and the step of installing and fixing is performed, the method further comprises the following steps: and installing steel bars and cast concrete on the stiff framework for enhancing the toughness of the upper tower column.
Further, the construction method of the tower column on the cable tower further comprises the step of cutting the framework upright column at the bottom of the stiff framework according to the installation requirement of the prestress wire bundles on the tower column, so that the error between the height of the prestress wire bundles on the tower column and the installation requirement is not more than 5mm.
Further, the construction method of the tower column on the cable tower further comprises the steps of detecting the fixed position of the stiff framework through a hammer ball and adjusting the stiff framework through a lifting appliance so that the deviation error is within 1 cm.
Correspondingly, the invention also provides a steel frame structure of the tower column on the cable tower, which comprises a stiff framework in the prestress steel wire bundle installation method of the tower column on the cable tower, wherein the stiff framework comprises the following components: the prestressed wire bundles are fixedly arranged on the stiff framework, and the positions of the framework upright posts and the framework parallel connection are staggered.
Further, a plurality of positioning steel bars are connected between the framework upright posts of the inner framework and the framework upright posts of the outer framework, so that the prestress steel wire bundles are fixed at designated positions on the positioning steel bars through limiting pieces.
Preferably, the limiting member is a U-shaped limiting member.
Further, the stiff skeleton is provided with lifting lugs.
Preferably, the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection are limited by a scissor stay.
Further, the framework upright post is composed of two kinds of angle steel of 75mm multiplied by 7mm and 100mm multiplied by 10mm, and the framework parallel connection is composed of angle steel of 63mm multiplied by 6 mm.
Further, angle steel limiting the movement of the framework upright post is arranged around the framework upright post.
Compared with the prior art, the scheme of the invention has the following advantages:
1. according to the method for installing the prestressed steel wire bundles of the tower column on the cable tower, provided by the invention, under a non-overhead operation environment, a plurality of preset linear prestressed steel wire bundles are fixedly installed on the stiff framework at positions where the framework upright columns and the framework are installed in parallel in a staggered manner according to design requirements, so that the cable tower steel bar and the steel wire bundles can be quickly and accurately positioned and installed under the condition that the number of the prestressed steel wire bundles is large, the positioning difficulty of the steel wire bundles is reduced, the time is saved, and the construction progress is accelerated on the premise that the construction quality is ensured; the method is implemented in a non-aerial working environment, so that the work load of aerial working is reduced, and the safety risk is greatly reduced.
2. According to the method for installing the prestressed wire bundles of the upper tower column of the cable tower, provided by the invention, the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines are projected on the assembly jig frame in a 1:1 mode, so that the accurate positioning of the prestressed wire bundles is realized, and the collision between the steel bars of the upper tower column of the cable tower and the wire bundles is avoided.
3. According to the prestress wire bundle installation method for the tower column on the cable tower, the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection are limited by the scissor support, so that the stiff skeleton has a stable structure.
4. According to the construction method for the upper tower column of the cable tower, a plurality of framework upright posts, framework parallel connection and prestressed wire bundles are assembled into an upper tower column steel frame structure; and utilize the hoist to go up tower column steel frame construction hoist to the position department that the design requirement appointed to install fixedly, through stiff skeleton and prestressing wire bundle integral hoisting, reduced high altitude construction work load, greatly reduced the safety risk, promoted work efficiency, be favorable to shortening the time limit for a project.
5. According to the steel frame structure of the tower column on the cable tower, the prestress steel wire bundles with a plurality of preset line shapes are fixedly arranged on the stiff framework, and the positions where the framework upright columns and the framework are arranged in parallel are staggered, so that the steel frame structure can be rapidly and accurately positioned and arranged under the condition that the number of the prestress steel wire bundles is large, the collision between steel bars of the tower column on the cable tower and the steel wire bundles is avoided, and the positioning difficulty of the steel wire bundles is reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic flow chart of one embodiment of a method of installing a prestressed tendon for a tower column on a cable tower according to the present invention;
FIG. 2 is a schematic flow chart of yet another embodiment of the method for installing a prestressed tendon of a tower column on a cable tower according to the present invention;
FIG. 3 is a schematic flow chart of another embodiment of a method for installing a prestressed wire bundle of a tower column on a cable tower according to the present invention;
FIG. 4 is a schematic flow chart of yet another embodiment of the method of installing a prestressed tendon for a tower column on a cable tower according to the present invention;
FIG. 5 is a schematic flow chart diagram of one embodiment of a method of constructing a column on a cable tower according to the present invention;
FIG. 6 is a schematic flow chart of another embodiment of a method of constructing a column on a cable tower according to the present invention;
FIG. 7 is a schematic flow chart diagram of another embodiment of a method of constructing a column on a cable tower according to the present invention;
FIG. 8 is a schematic flow chart of a further embodiment of a method of constructing a column on a cable tower according to the invention;
FIG. 9 is a schematic view of an embodiment of a steel frame structure of an upper tower column of the cable tower according to the present invention;
FIG. 10 is a schematic view of another state of the steel frame structure of the tower column of the cable tower shown in FIG. 9;
fig. 11 is a schematic view showing still another state of the steel frame structure of the tower column on the cable tower shown in fig. 9.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
As shown in fig. 1, the embodiment of the invention provides a method for installing a prestressed wire bundle of a tower column on a cable tower, which comprises the following steps:
s11, assembling the stiff framework, wherein based on design requirements, corresponding framework upright posts are fixedly installed at preset positions of the assembled jig frame, and the framework upright posts are fixedly connected through framework parallel connection so as to assemble the stiff framework meeting the design requirements. The preset positions of the framework upright posts can be determined according to the relative distance and the assembly site contour line given by the design drawing.
And S12, positioning and installing the prestressed wire bundles, wherein a plurality of prestressed wire bundles of preset line type are fixedly installed on the stiff framework at positions staggered from positions where framework upright posts and frameworks are installed in parallel according to design requirements in a non-overhead operation environment.
According to the method for installing the prestressed steel wire bundles of the tower column on the cable tower, provided by the invention, under a non-overhead operation environment, a plurality of prestressed steel wire bundles of preset line type are fixedly installed on the stiff framework at the positions where the framework upright posts and the framework parallel connection are installed according to design requirements, so that the positioning installation can be fast and accurately carried out under the condition that the number of the prestressed steel wire bundles is large, the collision of the framework upright posts, the framework parallel connection and cable tower steel bars and the prestressed steel wire bundles is avoided, the positioning difficulty of the steel wire bundles is reduced, and on the premise of ensuring the construction quality, the time is saved, and the construction progress is accelerated; the installation method is implemented in a non-aerial working environment, so that the work load of aerial working is reduced, and the safety risk is greatly reduced.
Further, as shown in fig. 2, in a further embodiment of the present invention, in addition to the step of assembling S11 of the stiff skeleton and positioning and installing S12 of the prestressed wire bundles, before the step of assembling S11 of the stiff skeleton, the method further comprises:
and the projection S10 of the structural contour line is used for carrying out 1:1 projection on the upper tower column steel bars, the prestressed pipelines and the upper tower column contour on the assembly jig frame. The accurate positioning of the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines is realized, and the collision between the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines is avoided. Because the steel bars of the upper tower column are denser, and more prestressed pipelines for placing the prestressed wire bundles exist, in order to avoid collision between the stiffness framework and the steel bars and the prestressed pipelines of the upper tower column, the projection of 1:1 is carried out on the tower column steel bars, the prestressed pipelines and the tower column profiles on the assembly jig frame, so that the accurate positioning of the prestressed wire bundles is realized, and the collision between the steel bars of the tower column on the cable tower and the prestressed wire bundles is avoided.
Further, as shown in fig. 3, in yet another embodiment of the present invention, the method includes the step of positioning and installing S12 the prestressed wire bundles and further refining the step of assembling the stiff skeleton, and specifically includes:
s111, based on design requirements, limiting and fixedly installing corresponding framework upright posts at preset positions of the spliced jig frame through angle steel, and fixedly connecting the framework upright posts through framework parallel connection to splice the framework upright posts into a stiff framework meeting the design requirements.
Further, as shown in fig. 4, in another embodiment of the present invention, in addition to the steps of S10, the stiff skeleton assembly S11, and the prestressed wire bundle positioning and installing S12, the stiff skeleton assembly step is preceded by the steps of:
and S9, an operation platform is erected on the outer ring of the assembly jig frame, so that the stiff framework is assembled on the assembly jig frame. The step can further ensure the safe construction of constructors.
Preferably, the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection is limited by a scissor support, so that the stiff skeleton provided with the prestressed wire bundles is prevented from deforming in the hoisting process, and the stiff skeleton has a stable structure.
Further, the error between the vertical distance of each two adjacent pre-stressed steel wire bundles and the design requirement is not more than 5mm, and the error between the horizontal distance of each two adjacent pre-stressed steel wire bundles and the design requirement is not more than 3mm.
Preferably, the design requirement distance of each two adjacent pre-stressed steel wire bundles is 25-50cm, and the design requirement distance of each two adjacent pre-stressed steel wire bundles is 30cm.
Correspondingly, as shown in fig. 5, the invention also provides a construction method of the tower column on the cable tower, which comprises the following steps:
s13, assembling a plurality of framework upright posts, framework parallel connection and prestressed wire bundles into an upper tower column steel frame structure by using the prestressed wire bundle installation method of the upper tower column of the cable tower.
S14, hoisting the upper tower column steel frame structure to a position designated by a design requirement by utilizing a lifting appliance, and installing and fixing. Specifically, the tower crane is 30.95m from the center line of the upper tower column, and the total weight of the tower column steel frame structure on the cable tower is smaller than the allowable lifting weight (8T) of the tower crane, so that the whole lifting can be performed, and the whole lifting is performed on the upper tower column steel frame structure by connecting a lifting appliance with a lifting lug arranged on a stiff framework through a hoist.
Through the integral hoisting of the stiff framework and the prestress wire bundles, the work load of overhead operation is reduced, the safety risk is greatly reduced, the working efficiency is improved, and the construction period is shortened.
Further, as shown in fig. 6, in another embodiment of the present invention, in addition to the steps of S13 and S14, after step S14, that is, after the step of hoisting the upper tower steel frame structure to a position specified by a design requirement by using a hoist, and performing the step of installing and fixing, the method further includes:
and S15, installing steel bars and casting concrete for enhancing the toughness of the upper tower column on the stiff framework.
Further, as shown in fig. 7, in another embodiment of the present invention, in addition to the steps of S13, S14 and S15 described above, the method for constructing a tower-on-cable-tower column further includes:
s16, cutting the framework upright post at the bottom of the stiff framework according to the installation requirement of the prestressed wire bundle on the upper tower column, so that the error between the height of the prestressed wire bundle on the upper tower column and the installation requirement is not more than 5mm. Thereby controlling the height of the stiff skeleton and the prestressed wire bundles, which can be determined according to the height of each section of the cable tower.
Further, as shown in fig. 8, in still another embodiment of the present invention, in addition to the steps of S13, S14, S15 and S16 described above, the method for constructing a tower-on-cable-tower column further includes:
s17, detecting the fixed position of the stiff skeleton through a hammer ball and adjusting the stiff skeleton through a lifting appliance so as to enable the deviation error to be within 1 cm. Thereby ensuring that the welding is carried out on the framework after the position and the perpendicularity of the stiff framework meet the requirements.
Correspondingly, as shown in fig. 9, the invention also provides a steel frame structure of the tower column on the cable tower, which comprises a stiff framework in the installation method of the prestressed steel wire bundles 3 and 31 of the tower column on the cable tower, wherein the stiff framework comprises the following components: the prestressed wire bundles 3 and 31, an inner skeleton, an outer skeleton formed on the periphery of the inner skeleton, and a connecting cross rod 4 for fixing the inner skeleton and the outer skeleton, wherein the inner skeleton and the outer skeleton are composed of a plurality of skeleton columns 1 and 11 and skeleton parallel connection 2 for fixedly connecting the skeleton columns 1 and 11, a plurality of prestressed wire bundles 3 and 31 of preset lines are fixedly arranged on the stiff skeleton, and the positions where the skeleton columns 1 and 11 and the skeleton parallel connection 2 are arranged are staggered, so that the prestressed wire bundles 3 and 31 can be quickly and accurately positioned and arranged under the condition of more numbers, the collision between steel bars of a tower column on a cable tower and the prestressed wire bundles 3 and 31 is avoided, and the positioning difficulty of the prestressed wire bundles 3 and 31 is reduced.
Further, with continued reference to fig. 9, as shown in connection with fig. 10 and 11, a plurality of positioning steel bars 6 are connected between the framework upright of the inner framework and the framework upright of the outer framework, so that the prestressed wire bundles are fixed at designated positions on the positioning steel bars 6 through the limiting members 7.
Preferably, the limiting member 7 is a U-shaped limiting member which firmly fixes the prestressed wire bundles 3 and 31 at a designated position on the spacer bar 6 by welding.
Further, the stiff skeleton is provided with lifting lugs, preferably, the number of the lifting lugs is 8, and the lifting lugs are uniformly distributed on the stiff skeleton.
Preferably, the skeleton parallel connection 2 comprises an upper layer and a lower layer, each layer of skeleton parallel connection 2 is in a symmetrical hexagon, and the two layers of skeleton parallel connection 2 are limited by the scissor struts 5, so that the stiff skeleton provided with the prestressed wire bundles 3 and 31 is prevented from deforming in the hoisting process, and the stiff skeleton has a stable structure.
Further, the error between the vertical distance of each two adjacent pre-stressed steel wire bundles 3 or 31 and the design requirement is not more than 5mm, and the error between the horizontal distance of each two adjacent pre-stressed steel wire bundles 3 and the design requirement is not more than 3mm.
Preferably, the design requirement distance of each two adjacent pre-stressed steel wire bundles 3 and 31 is 25-50cm, the design requirement distance of each two adjacent pre-stressed steel wire bundles 3 is any one value of 30cm, specifically, two pre-stressed steel wire bundles 3 and 31 are adopted in one embodiment of the invention, the pre-stressed horizontal spacing design requirement of the pre-stressed steel wire bundles 3 is 30cm, and the upper and lower spacing design requirement of the pre-stressed steel wire bundles 3 and 31 is any one value of 25-50 cm.
Further, angle steel limiting the movement of the framework upright posts 1 and 11 is arranged around the framework upright posts 1 and 11.
Further, the framework upright post is composed of angle steel 1 with the angle of 75mm multiplied by 7mm (the side width is 75mm, the side thickness is 7 mm) and angle steel 11 with the angle of 100mm multiplied by 10mm (the side width is 100mm, the side thickness is 10 mm), the framework upright post around the cable guide pipe is selected from angle steel 11 with the angle of 100mm multiplied by 10mm, and the framework parallel connection 2 and the scissor support 5 are composed of angle steel with the angle of 63mm multiplied by 6mm (the side width is 63mm, the side thickness is 6 mm).
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (16)
1. The method for installing the prestressed wire bundles of the tower column on the cable tower is characterized by comprising the following steps of:
assembling the stiff framework, based on design requirements, fixedly installing corresponding framework upright posts at preset positions of the assembled jig frame, and fixedly connecting the framework upright posts through framework parallel connection to assemble the stiff framework meeting the design requirements;
and (3) positioning and installing the prestressed wire bundles, wherein a plurality of prestressed wire bundles of preset line type are fixedly installed on the stiff framework according to design requirements in a non-overhead working environment, and the positions where the framework upright posts and the framework are installed are staggered in parallel.
2. The method for installing a prestressed wire bundle of a tower column on a cable tower according to claim 1, further comprising, before the step of assembling the stiff skeleton: and carrying out 1:1 projection on the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines on the assembly jig frame so as to accurately position the upper tower column steel bars, the prestressed pipelines and the upper tower column outlines.
3. The method for installing a prestressed wire bundle of a tower column on a cable tower according to claim 1, wherein the step of fixedly installing each corresponding skeleton column at each preset position of the spliced jig frame comprises the steps of: and limiting and fixedly installing corresponding framework upright posts at each preset position of the assembly jig frame through angle steel.
4. The method of installing a prestressed wire bundle of a tower column on a cable tower of claim 1, further comprising, prior to said step of stiff skeleton assembly:
and the operation platform is erected on the outer ring of the assembly jig frame, so that the stiff framework is assembled on the assembly jig frame.
5. The method for installing the prestressed wire bundles of the tower column on the cable tower according to claim 1, wherein the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection are limited by a scissor stay.
6. The method for installing the prestressed wire bundles of the tower column on the cable tower according to claim 1, wherein the error between the vertical distance between each two adjacent vertical prestressed wire bundles and the design requirement is not more than 5mm, and the error between the horizontal distance between each two adjacent horizontal prestressed wire bundles and the design requirement is not more than 3mm.
7. The method for installing prestressed wire bundles of an upper tower column of a cable tower according to claim 6, wherein the required distance for the design of each two adjacent upper and lower prestressed wire bundles is 25-50cm, and the required distance for the design of each two adjacent left and right prestressed wire bundles is 30cm.
8. The construction method of the tower column on the cable tower is characterized by comprising the following steps:
assembling a plurality of framework upright posts, framework parallel joints and prestressed wire bundles into an upper tower column steel frame structure by using the method for installing the prestressed wire bundles of the upper tower column of the cable tower according to any one of claims 1 to 7;
and hoisting the upper tower column steel frame structure to a position designated by a design requirement by utilizing a lifting appliance, and installing and fixing.
9. The method of claim 8, further comprising, after the step of installing and fixing the upper column steel frame structure to a position designated by a design requirement by using a hanger: and installing steel bars and cast concrete on the stiff framework for enhancing the toughness of the upper tower column.
10. The method of claim 8, further comprising cutting the framework columns at the bottom of the stiff framework based on the installation requirements of the prestressed wire bundles on the upper tower column such that the prestressed wire bundles have a height of no more than 5mm from the installation requirements.
11. A method of constructing a tower on a cable tower according to claim 8, further comprising detecting the fixed position of the stiff skeleton by a hammer ball and adjusting the stiff skeleton with a spreader so that the deviation error is within 1 cm.
12. A steel frame structure of a tower column on a cable tower, which is characterized by comprising a stiff framework assembled by the prestress steel wire bundle installation method of the tower column on the cable tower according to claim 1, wherein the stiff framework comprises: the device comprises prestressed steel wire bundles, an inner framework, an outer framework formed on the periphery of the inner framework and a connecting cross rod for fixing the inner framework and the outer framework, wherein the inner framework and the outer framework are composed of a plurality of framework upright posts and framework parallel joints for fixedly connecting the framework upright posts, a plurality of preset linear prestressed steel wire bundles are fixedly arranged on the stiff framework, and the positions where the framework upright posts and the framework parallel joints are arranged are staggered;
the stiff framework is provided with lifting lugs; and angle steel limiting the movement of the framework upright post is arranged around the framework upright post.
13. The steel frame structure of the tower column on the cable tower according to claim 12, wherein a plurality of positioning steel bars are connected between the framework upright posts of the inner framework and the framework upright posts of the outer framework, so that the prestressed steel wire bundles are fixed at designated positions on the positioning steel bars through limiting pieces.
14. The steel frame structure of a tower column on a cable tower according to claim 13, wherein the limiting member is a U-shaped limiting member.
15. The steel frame structure of an upper tower column of a cable tower according to claim 12, wherein the skeleton parallel connection comprises an upper layer and a lower layer, each layer of skeleton parallel connection is in a symmetrical hexagon, and the two layers of skeleton parallel connection are limited by a scissor stay.
16. The steel frame structure of the tower column on the cable tower according to claim 12, wherein the framework upright column is composed of two kinds of angle steel of 75mm multiplied by 7mm and 100mm multiplied by 10mm, and the framework parallel connection is composed of angle steel of 63mm multiplied by 6 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023578.3A CN114277694B (en) | 2017-12-27 | 2017-12-27 | Prestressed steel strand construction method for tower column on cable tower |
| CN201711446204.8A CN108166396B (en) | 2017-12-27 | 2017-12-27 | Prestress steel wire bundle installation and construction method for tower column on cable tower and steel frame structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711446204.8A CN108166396B (en) | 2017-12-27 | 2017-12-27 | Prestress steel wire bundle installation and construction method for tower column on cable tower and steel frame structure |
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| CN202210023578.3A Division CN114277694B (en) | 2017-12-27 | 2017-12-27 | Prestressed steel strand construction method for tower column on cable tower |
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| CN108166396A CN108166396A (en) | 2018-06-15 |
| CN108166396B true CN108166396B (en) | 2023-08-18 |
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| CN201711446204.8A Active CN108166396B (en) | 2017-12-27 | 2017-12-27 | Prestress steel wire bundle installation and construction method for tower column on cable tower and steel frame structure |
| CN202210023578.3A Active CN114277694B (en) | 2017-12-27 | 2017-12-27 | Prestressed steel strand construction method for tower column on cable tower |
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| CN202210023578.3A Active CN114277694B (en) | 2017-12-27 | 2017-12-27 | Prestressed steel strand construction method for tower column on cable tower |
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| US4065897A (en) * | 1974-07-09 | 1978-01-03 | Branko Zezelj | Precast skeleton spatial monolithic structure |
| JPH11181725A (en) * | 1997-12-22 | 1999-07-06 | Maeda Corp | Method for constructing horizontal beam of main tower made of concrete |
| KR100667921B1 (en) * | 2005-12-13 | 2007-01-11 | 재현토건(주) | Construction method of pylon using precast concrete beam |
| CN103741601A (en) * | 2013-06-28 | 2014-04-23 | 中交第三航务工程局有限公司 | Tower, beam and cable synchronous bridge forming technology |
| CN104775364A (en) * | 2015-02-13 | 2015-07-15 | 中交路桥华南工程有限公司 | Method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers |
| CN204715211U (en) * | 2015-02-13 | 2015-10-21 | 中交路桥华南工程有限公司 | Stiff skeleton and adopt the Sarasota constructing structure of this stiff skeleton |
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| CN106436576A (en) * | 2016-08-24 | 2017-02-22 | 广西长长路桥建设有限公司 | Constructing method of main tower of cable-stayed bridge through circumferential prestressing force |
| CN207793884U (en) * | 2017-12-27 | 2018-08-31 | 中交路桥华南工程有限公司 | The steel frame construction of Sarasota upper king-post strut |
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| CN114277694A (en) | 2022-04-05 |
| CN114277694B (en) | 2023-04-07 |
| CN108166396A (en) | 2018-06-15 |
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