CN111996920A - Cable tower column segment reinforcement cage block hoisting construction method and structure - Google Patents

Cable tower column segment reinforcement cage block hoisting construction method and structure Download PDF

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Publication number
CN111996920A
CN111996920A CN202010920670.0A CN202010920670A CN111996920A CN 111996920 A CN111996920 A CN 111996920A CN 202010920670 A CN202010920670 A CN 202010920670A CN 111996920 A CN111996920 A CN 111996920A
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China
Prior art keywords
reinforcement cage
steel reinforcement
tower column
segment
bridge
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CN202010920670.0A
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Chinese (zh)
Inventor
周大庆
龙立敦
李少方
廖万辉
王朝国
张凯
林文凯
汪志伟
周旭
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Guizhou Highway Engineering Group Co ltd
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Guizhou Highway Engineering Group Co ltd
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Application filed by Guizhou Highway Engineering Group Co ltd filed Critical Guizhou Highway Engineering Group Co ltd
Priority to CN202010920670.0A priority Critical patent/CN111996920A/en
Publication of CN111996920A publication Critical patent/CN111996920A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/14Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced

Abstract

The invention discloses a cable tower column segment steel reinforcement cage block hoisting construction method and a structure, which are characterized in that a cable tower column of a suspension bridge or a cable-stayed bridge is divided into tower column segments according to requirements, the steel reinforcement cage of each tower column segment is divided into 4 block steel reinforcement cages, after the block steel reinforcement cages are prefabricated, the block steel reinforcement cages are conveyed to an appointed position at the bottom of the tower column through rotation and hoisting, assembled on site and connected with the steel reinforcement cage of the tower column segment installed below to obtain the steel reinforcement cage of the tower column segment, and the steps are repeated to finish the construction of the steel reinforcement cage of the tower column segment. The invention can reduce the maximum weight of the reinforcement cage, further reduce the requirement on the hoisting capacity of the tower crane, and save the construction period and the cost.

Description

Cable tower column segment reinforcement cage block hoisting construction method and structure
Technical Field
The invention relates to a construction method of a tower column reinforcement cage, in particular to a construction method and a structure for hoisting cable tower column segment reinforcement cages in blocks.
Background
In the construction of highway projects and municipal road projects, a cable-stayed bridge and a suspension bridge are often used as controlled projects of the project construction, the total construction period of the project is limited, and the construction investment and the construction cost of the project are influenced significantly. The prior engineering practice shows that in the construction process of a suspension bridge and a cable-stayed bridge cable tower, the installation of the steel bars of the tower column sections generally needs more than 3.5 days, which accounts for about 60 percent of the total construction time of the sections, and the total progress of the tower column construction is restricted by the construction efficiency. Therefore, multiple bridge construction units in China initiatively find a method for improving the construction efficiency of the tower column section steel bars so as to shorten the construction time of the cable tower and improve the investment benefit. Compared with a typical integral hoisting technology of the segmental steel reinforcement cage with the extra-large bridge of the duck pond river, the segmental steel reinforcement cage is integrally hoisted to the top of a tower column by adopting a tower crane after being prefabricated on the ground; and the curtain type hoisting technology of the extra-large bridge of the red river, the fragment hoisting technology of the extra-large bridge of the flat pond and the steel bar net hoisting technology of the tiger door two-bridge realize that the main bars are grouped into the main bar curtain or net through stirrups or a jig frame on the ground and then lifted to the top of the tower column for assembly. The exploration and successful practice of the technology greatly promote the efficiency of the construction of the steel bars of the tower column, and particularly, the integral hoisting technology of the segment steel reinforcement cage realizes that the operation time of the steel bars at the top of the tower column is controlled within 14 hours, and the result is very good. However, while the above process is implemented, there is also a problem that further improvement is required: the hoisting weight of the whole section hoisting process is over 40 tons, a large tower crane is needed, the cost is high, the number of butted steel bars is over 500, the deformation of the steel bar cage is difficult to control, the steel bar butting difficulty is high, and the butting quality is difficult to control; for curtain hoisting or split hoisting and other technologies, the split is too many, and the stiff skeleton, most stirrups, hook bars and the like need to be installed one by one, so that the construction efficiency is not improved as compared with integral hoisting of the segment reinforcement cage.
At present, the construction process of pier tower segment steel bars in China mainly comprises a conventional root-by-root installation process, a segment steel bar cage integral hoisting process, a curtain type hoisting process, a segment hoisting process and a mesh hoisting process.
(1) Conventional root-by-root installation process
The process adopts a tower crane to lift angle steel and reinforcing steel bars to the top of a tower column, and adopts manual work to install the stiff skeleton, the vertical main reinforcements, the stirrups, the hook reinforcements and the like one by one. The process has low installation efficiency, takes a No. 3 main tower of a Kaizhou lake grand bridge as an example, under the normal condition, the installation time of the standard segment steel bars is 3.5-4 d, the influence of severe weather is large, the uncontrollable factors are many, and the construction period cannot be guaranteed; meanwhile, due to long-time outdoor high-altitude operation, the physical consumption of workers is high, the workers are in a fatigue state for a long time, and the safety risk is high.
(2) Integral hoisting technology for segmental steel reinforcement cage
In the construction process of a duck pond river grand bridge, the medium-cross road bridge construction company Limited successfully explores and implements a segmental reinforcement cage integral hoisting technology, the segmental reinforcement cage is assembled on a ground reinforcement cage assembling jig frame in a vertical 1+1 mode, and then the segmental reinforcement cage is integrally hoisted to the top of a tower column to be installed in a butt joint mode by adopting a large tower crane. The process transfers most of high-altitude operation to the ground, so that the safety risk is low and the interference factors are few; and the steel reinforcement cage is assembled on the ground, the hoisting operation time of the tower column top steel reinforcement cage can be controlled to be about 14h, and the construction efficiency is extremely high. However, the segment reinforcement cage is huge in weight and exceeds 38t on average, and a large tower crane such as a middle-linked heavy crane D1100 is required for hoisting, so that the cost is high; meanwhile, the weight of the steel reinforcement cage is large, the deformation of the steel reinforcement cage in the hoisting process is difficult to control, and in addition, the number of vertical butt joint steel reinforcements exceeds 500, the technical difficulty of steel reinforcement butt joint is high, and the connection quality cannot be guaranteed.
(3) Curtain type, separating and net hoisting
A reinforcing steel bar curtain type hoisting technology (3) is successfully applied in the construction process of a red river grand bridge by the Sichuan highway bridge construction group, a reinforcing steel bar slicing hoisting technology is explored in the construction of a pond grand bridge by the Guizhou bridge construction group, and a reinforcing steel bar mesh hoisting technology is implemented in the construction of a Tiger-door two-bridge by the Guangdong highway construction group. The basic principle of the technology is that a special lifting appliance or a stirrup is adopted on the ground, vertical main reinforcements are grouped or welded into a net sheet, and then the net sheet is lifted to the top of a tower column by a tower crane for butt joint installation. The use of this kind of technique has promoted reinforcing bar installation effectiveness to a certain extent, and the column top reinforcing bar activity duration is steerable about 2.5d, has reduced the safety risk simultaneously, also need not to install large-scale tower crane, low cost, and single hoist and mount reinforcing bar is small in quantity, and the butt joint is simple, and the steel bar connection quality is controllable. However, the technology can only hoist dozens of steel bars at a time, the steel bars are too many in pieces, and the stiff skeleton and the horizontal steel bars such as the stirrups and the hook bars still need to be installed manually one by one, so that the improvement of the construction efficiency is limited.
Disclosure of Invention
The invention aims to provide a construction method and a structure for hoisting cable tower column segment steel reinforcement cages in blocks. The method has the characteristics of high efficiency of the integral hoisting process, and has the advantages of low construction cost, controllable quality and low operation difficulty of the sectional hoisting.
The technical scheme of the invention is as follows: a cable tower column segment steel reinforcement cage blocking hoisting construction method divides a cable tower column of a suspension bridge or a cable-stayed bridge into tower column segments according to tower column design parameters and the height of a hydraulic creeping formwork, decomposes a steel reinforcement cage of each tower column segment into 4 blocking steel reinforcement cages according to the weight balance principle and the common tower crane hoisting capacity of TC6015/7035 and the like in cable tower construction, the stiff framework design of the steel reinforcement cage, the staggering requirement of horizontal steel reinforcement joints and the like, and realizes that horizontal hooking ribs and the steel reinforcement joints are reduced as much as possible on the premise of maximally utilizing the hoisting capacity of a conventional construction tower crane, so that the cost is saved and the construction efficiency is improved. After the segmented reinforcement cage is prefabricated in a reinforcement processing factory, the segmented reinforcement cage is conveyed to the bottom of a tower column and is conveyed to a tower column top construction station through rotation and lifting, the segmented reinforcement cage is assembled on site and is connected with a tower column section reinforcement cage installed below to obtain the tower column section reinforcement cage, and the steps are repeated to complete the construction of the tower column section reinforcement cage.
According to the construction method for hoisting the cable tower column segment steel reinforcement cage in the blocking manner, the blocking steel reinforcement cage is prefabricated, the installed tower column segment steel reinforcement cage is used as a male segment, the tower column segment steel reinforcement cage to be installed is used as a secondary segment, and the secondary segment is designed and manufactured by using the male segment as a reference, so that the male segment steel reinforcement cage and the secondary segment steel reinforcement cage are accurately connected. Meanwhile, according to design parameters of the inclination slope of the tower column, the distance between the steel bars and the diameter and construction parameters of tower column section division and partitioned steel bar cage division, the prefabricated pedestal with the same slope is manufactured, so that the parameters of the slope of the prefabricated pedestal and the distance between the steel bar positioning comb plate positioning grooves meet design requirements. In addition, in order to ensure that the stirrup is connected with high efficiency and high quality, the blanking length of the stirrup needs to be accurately controlled, and the blanking length of the stirrup is 5mm shorter than the designed length.
The cable tower column segment steel reinforcement cage blocking hoisting construction method is connected with a tower column segment steel reinforcement cage installed below, and means that the blocking steel reinforcement cage of the tower column segment to be installed is in butt joint with the vertical steel bars of the tower column segment steel reinforcement cage installed, connected with the stiff skeleton wrapping plate, connected with the steel bars through straight threads, and then the installation of the rest steel bars is performed, so that the connection construction is completed. In the construction of the straight threaded connection of the steel bars, the vertical main reinforcements and the horizontal hook reinforcements adopt conventional sleeves, the stirrups adopt lengthened sleeves, and the length of each stirrup is 1cm larger than that of each conventional sleeve, so that the connection quality of the stirrups is ensured.
According to the construction method for hoisting cable tower column segment steel reinforcement cage blocks, the tower column segment steel reinforcement cage is connected with the tower column segment steel reinforcement cage installed below, the segmented steel reinforcement cage is divided into the longitudinal bridge steel reinforcement cage blocks and the transverse bridge steel reinforcement cage blocks, the hoisting sequence is that the longitudinal bridge steel reinforcement cage blocks are firstly conducted, the transverse bridge steel reinforcement cage blocks are then conducted, the longitudinal bridge steel reinforcement cage blocks are slowly placed from top to bottom, and the transverse bridge steel reinforcement cage blocks are horizontally moved from two sides to the inside.
A cable tower column segment steel reinforcement cage blocking hoisting structure is characterized in that a tower column is divided into tower column segments according to requirements, and the steel reinforcement cage of each tower column segment is divided into 4 blocking steel reinforcement cages.
According to the cable tower column segment reinforcement cage partitioning hoisting structure, the partitioning reinforcement cage is divided into the transverse bridge reinforcement cage partitioning and the longitudinal bridge reinforcement cage partitioning.
Aforementioned cable tower column segment steel reinforcement cage piecemeal hoisting structure, horizontal bridge is to steel reinforcement cage piecemeal, including horizontal bridge to strength nature skeleton, is equipped with horizontal bridge to main muscle and horizontal bridge to the stand pipe in the middle of horizontal bridge to strength nature skeleton, fixes isolation muscle, strengthening rib, stirrup and colludes the muscle respectively on horizontal bridge to strength nature skeleton and horizontal bridge to main muscle.
According to the cable tower column segment steel reinforcement cage partitioning hoisting structure, the longitudinal bridge is partitioned into the steel reinforcement cages and comprises the longitudinal bridge to the stiff skeleton, the longitudinal bridge is provided with the longitudinal bridge to the main rib and the longitudinal bridge to the guide pipe in the middle of the longitudinal bridge to the stiff skeleton, and the longitudinal bridge to the stiff skeleton and the longitudinal bridge to the main rib are respectively fixed with the isolation rib, the reinforcing rib, the stirrup and the hook rib.
Aforementioned cable tower column segment steel reinforcement cage blocking hoisting structure, the blocking steel reinforcement cage rotates through runing rest in the column tower bottom, and runing rest includes fixed axle and support, support upper surface slope with blocking steel reinforcement cage slope rate is the same.
Aforementioned cable tower column segment steel reinforcement cage piecemeal hoisting structure, the piecemeal steel reinforcement cage hoists through the steel reinforcement cage hoist, and the steel reinforcement cage hoist includes spandrel girder, wire rope and electric block, and the tie point of wire rope and electric block is in piecemeal steel reinforcement cage focus position.
The invention has the beneficial effects that:
(1) the tower column segment steel bar operation is carried out to the thinking that the technology adopted "prefabricated assembled" of piecemeal hoist and mount, the batch production prefabrication of steel reinforcement cage piecemeal, shift most steel bar installation work to going on in the steel reinforcement processing factory, only need carry out at the tower column top with the butt joint of segment owner muscle of having constructed, the stirrup is connected between the piecemeal, strength nature skeleton connection and a small amount of surplus stirrup with collude muscle installation work, moreover, the operation is simple, the work load is few, very big reduction high altitude construction volume and activity duration, and reduced the influence of bad weather to the construction as far as possible, construction operation personnel's operation safety risk has been reduced.
(2) The adoption section bar cage decomposes into 4 piecemeals, has reduced the weight and the degree of difficulty of hoist and mount, has realized the optimal match of steel reinforcement cage piecemeal weight and conventional tower crane hoisting capacity of cable tower construction to and erect the equilibrium of muscle connection quality and efficiency, avoid colluding muscle stirrup, the stiff skeleton joint too much cost that leads to because of too much piecemeal simultaneously and promote, efficiency reduce the problem by a wide margin. The reinforcement cage is prefabricated according to "father festival + son festival" thinking in the reinforcement processing factory in the piecemeal, provides a plurality of working faces, has realized assembling reinforcement cage tower capital modularization in step with reinforcement cage piecemeal batch production, and the prefabrication of reinforcement cage piecemeal does not occupy the total construction period, very big shortening cable tower construction total construction period, and single section reinforcing bar installation time is steerable in 1.5 days, saves 2 days than conventional technology.
(3) The segment reinforcement cage is divided into 4 blocks which are divided into a longitudinal bridge direction and a transverse bridge direction, so that the weight of the four blocks of the reinforcement cage is basically even, the maximum weight of the reinforcement cage can be reduced, the requirement on the lifting capacity of a tower crane is further reduced, and the cost is saved; when the steel reinforcement cage is hoisted, the stiff skeleton is used as a bearing structure, and the blocking is carried out, so that the stiff skeleton can be closed into a whole, and the bearing capacity of the stiff skeleton is improved; in addition, the stirrup is connected with the lengthened sleeve through the blanking length control, the stirrup connecting speed is guaranteed, and the assembling efficiency of the reinforcement cage is improved.
(4) The steel reinforcement cage sub-blocks adopt the rotating support to adjust the posture, so that the unfavorable elastoplasticity deformation generated in the process of converting the horizontal posture into the vertical posture by adopting the conventional main and auxiliary hoisting point method is avoided, and the connection efficiency and quality of the steel reinforcement in the hoisting construction of the steel reinforcement cage are improved.
The effect comparison of the block hoisting of the invention and the prior art is shown in the following table:
TABLE 1 comparison of block hoisting and existing process effects
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of a tower section of the present invention;
FIG. 3 is a schematic block diagram of a tower column segment;
FIG. 4 is a side view of a transverse bridge reinforcement cage segment;
FIG. 5 is a rear view of FIG. 4;
FIG. 6 is a top view of a transverse direction reinforcement cage segment;
FIG. 7 is a side view of a longitudinal cage segment;
FIG. 8 is a rear view of FIG. 7;
FIG. 9 is a top view of a longitudinal cage segment;
FIG. 10 is a schematic view of a rotary stand;
FIG. 11 is a top view of a steel reinforcement cage spreader;
FIG. 12 is a side view of a steel reinforcement cage spreader;
FIG. 13 is a schematic view of a stiff framework of a pylon column;
fig. 14 is a schematic view of installation of a reinforcement cage of a parent segment and a child segment.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps:
a cable tower column segment reinforcement cage blocking hoisting structure is shown in figures 1-12, a tower column is divided into tower column segments 1 according to requirements, and a reinforcement cage 2 of each tower column segment 1 is divided into 4 blocking reinforcement cages 3.
The segmented steel reinforcement cage 3 is divided into transverse bridge direction steel reinforcement cage segments 4 and longitudinal bridge direction steel reinforcement cage segments 5, and the weight of each steel reinforcement cage is divided equally as much as possible.
The transverse bridge is divided into the reinforcement cage blocks 4, the transverse bridge is divided into the stiff frameworks 401, transverse bridge directional main reinforcements 402 and transverse bridge directional guide pipes 403 are arranged in the middles of the transverse bridge directional stiff frameworks 401, and the transverse bridge directional stiff frameworks 401 and the transverse bridge directional main reinforcements 402 are respectively fixed with isolation reinforcements 6, reinforcing reinforcements 7, stirrups 8 and hook reinforcements 9. The transverse bridge guide pipe 403 is used for aligning and connecting the upper transverse bridge reinforcement cage segment 4 and the lower transverse bridge reinforcement cage segment 4.
The longitudinal bridge directional reinforcement cage block 5 comprises a longitudinal bridge directional stiff skeleton 501, a longitudinal bridge directional main reinforcement 502 and a longitudinal bridge directional guide pipe 503 are arranged in the middle of the longitudinal bridge directional stiff skeleton 501, and horizontal reinforcements such as an isolation reinforcement 6, a reinforcing reinforcement 7, a stirrup 8 and a hook reinforcement 9 are respectively fixed on the longitudinal bridge directional stiff skeleton 501 and the longitudinal bridge directional main reinforcement 502. The longitudinal bridging guide pipe 503 is used for aligning and connecting the upper and lower longitudinal bridging reinforcement cage sub-blocks 5.
The partitioned reinforcement cage 3 rotates at the bottom of the tower column through the rotating support 10, the rotating support 10 comprises a fixed shaft 101 and a support 102, and the gradient of the upper surface of the support 102 is the same as the gradient of the partitioned reinforcement cage 3. During rotation, the partitioned reinforcement cage 3 is placed on the rotating support 10, the rotating support 10 and the partitioned reinforcement cage 3 are integrally rotated into a vertical state by aid of a truck crane and are temporarily fixed by bolts, and finally, temporary connection with the partitioned reinforcement cage 3 is removed and the tower crane is used for adjusting to the top of a tower column for installation. In the rotating process, the steel bar cage 3 is integrally fixed with the rotating support 10, so that the rigidity is high, the stress of the steel bar cage 3 is balanced, unfavorable deformation is basically avoided, and the convenience and the quality of butt joint construction of the steel bar cage 3 are guaranteed.
The segmented steel reinforcement cage 3 is hoisted through a steel reinforcement cage hoisting tool 11, the steel reinforcement cage hoisting tool 11 comprises a bearing beam 111, a steel wire rope 112 and an electric hoist 113, and the steel wire rope 112 and the electric hoist are connected at the gravity center position of the segmented steel reinforcement cage 3 through a connection point 113.
A cable tower column section steel reinforcement cage partitioning and hoisting construction method comprises the steps of dividing a cable tower column of a suspension bridge or a cable-stayed bridge into tower column sections 1 according to requirements, dividing a steel reinforcement cage of each section of the tower column section 1 into 4 partitioned steel reinforcement cages 3, after the partitioned steel reinforcement cages 3 are prefabricated, conveying the partitioned steel reinforcement cages 3 to an appointed position at the bottom of the tower column through rotation and hoisting, assembling on site and connecting with the steel reinforcement cage of the tower column section 1 installed below to obtain the steel reinforcement cage 2 of the section of the tower column section, and repeating the steps to finish the construction of the steel reinforcement cage of the tower column section 1.
The blocking steel reinforcement cage is prefabricated, use installed pylon segment steel reinforcement cage 2 as father's festival, treat that installation pylon segment steel reinforcement cage 2 designs the preparation for the son festival, make father's festival son festival steel reinforcement cage 2 accurate connection, according to the design parameter of pylon slope, reinforcing bar interval and diameter, and the construction parameter of 1 division of pylon segment, 3 divisions of blocking steel reinforcement cage, the same prefabricated pedestal of preparation slope, the parameter that makes prefabricated pedestal slope, reinforcing bar location fishback groove interval accords with the design requirement. According to the idea that the previous section of the reinforcement cage 2 is the next section of the base mold, the four blocks of the section of the reinforcement cage 2 are prefabricated respectively and circularly reciprocate until the completion of the process.
The connection with the tower column segment reinforcement cage 2 installed below means that the segmented reinforcement cage 3 of the tower column segment 1 to be installed is in butt joint with the vertical reinforcement of the tower column segment reinforcement cage 2 installed, connected with the stiff skeleton clad plate, connected with the reinforcement through straight threads, and then the installation of the rest reinforcement is carried out, and the connection construction is completed.
Being connected with the below installed pylon segment section steel reinforcement cage, being divided into longitudinal bridge to steel reinforcement cage piecemeal 5 and horizontal bridge to steel reinforcement cage piecemeal 4 with piecemeal steel reinforcement cage 3, the hoist and mount order is earlier longitudinal bridge to steel reinforcement cage piecemeal 5, and back horizontal bridge is to steel reinforcement cage piecemeal 4, and longitudinal bridge is to steel reinforcement cage piecemeal 5 from top to down slowly transferring, and back horizontal bridge is to steel reinforcement cage piecemeal 4 by both sides horizontal migration toward inside. Until it is moved over the cages 2 of the tower section to be installed, and the connection of the upper and lower cages is carried out.
The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (10)

1. A cable tower column segment steel reinforcement cage partitioning and hoisting construction method is characterized in that a cable tower column of a suspension bridge or a cable-stayed bridge is divided into tower column segments according to requirements, a steel reinforcement cage of each tower column segment is divided into 4 partitioned steel reinforcement cages, the partitioned steel reinforcement cages are transported to the bottom of a tower column after being prefabricated in a steel reinforcement processing factory, the partitioned steel reinforcement cages are conveyed to a tower column top application position through rotation and hoisting, the partitioned steel reinforcement cages are assembled on site and connected with the steel reinforcement cages of the tower column segments installed below to obtain the steel reinforcement cages of the tower column segments, and the steps are repeated to complete the construction of all the steel reinforcement cages of the tower column segments.
2. The pylon tower segment steel reinforcement cage partitioning and hoisting construction method according to claim 1, wherein the partitioning steel reinforcement cage is prefabricated, the installed pylon tower segment steel reinforcement cage is used as a parent segment, the pylon tower segment steel reinforcement cage to be installed is designed and manufactured as a child segment, the parent segment steel reinforcement cage and the child segment steel reinforcement cage are accurately connected, and prefabricated pedestals with the same slope are manufactured according to design parameters of a tower column inclination slope, a steel reinforcement interval and a diameter and construction parameters of tower column segment division and partitioning steel reinforcement cage division, so that the parameters of the prefabricated pedestal slope and the steel reinforcement positioning comb positioning groove interval meet design requirements.
3. The cable tower column segment steel reinforcement cage blocking and hoisting construction method according to claim 1, wherein the connection with the tower column segment steel reinforcement cage installed below is performed by butting the blocking steel reinforcement cage of the tower column segment to be installed with the vertical steel bars of the tower column segment steel reinforcement cage installed, connecting the blocking steel reinforcement cage with the stiff skeleton wrapping plate, connecting the steel bars through straight threads, and then installing the residual stirrups and the horizontal hooks to complete the connection construction.
4. The pylon segment steel reinforcement cage block hoisting construction method of claim 3, wherein the segment steel reinforcement cage is divided into a longitudinal bridge steel reinforcement cage block and a transverse bridge steel reinforcement cage block by connecting with the lower installed pylon segment steel reinforcement cage, the hoisting sequence is that the longitudinal bridge steel reinforcement cage block is firstly divided into the longitudinal bridge steel reinforcement cage block and the transverse bridge steel reinforcement cage block is secondly divided into the longitudinal bridge steel reinforcement cage block and the transverse bridge steel reinforcement cage block, the longitudinal bridge steel reinforcement cage block is slowly lowered from top to bottom, and the transverse bridge steel reinforcement cage block horizontally moves from two sides to inside.
5. The cable tower column segment reinforcement cage block hoisting structure of any one of claims 1 to 4, characterized in that the column is divided into column segments (1) as required, and the reinforcement cage (2) of each column segment (1) is divided into 4 block reinforcement cages (3).
6. The cable tower column segment reinforcement cage block hoisting structure of claim 5, wherein the segmented reinforcement cage (3) is divided into transverse bridge reinforcement cage blocks (4) and longitudinal bridge reinforcement cage blocks (5).
7. The cable tower column segment reinforcement cage block hoisting structure of claim 5, wherein the transverse bridge-oriented reinforcement cage block (4) comprises a transverse bridge-oriented stiff skeleton (401), a transverse bridge-oriented main reinforcement (402) and a transverse bridge-oriented guide pipe (403) are arranged in the middle of the transverse bridge-oriented stiff skeleton (401), and the transverse bridge-oriented stiff skeleton (401) and the transverse bridge-oriented main reinforcement (402) are respectively fixed with an isolation reinforcement (6), a reinforcing rib (7), a stirrup (8) and a hook reinforcement (9).
8. The segmental hoisting structure of the steel reinforcement cage of the cable tower column according to claim 5, wherein the longitudinal bridge-oriented steel reinforcement cage segmental hoisting structure comprises a longitudinal bridge-oriented stiff framework (501), a longitudinal bridge-oriented main reinforcement (502) and a longitudinal bridge-oriented guide pipe (503) are arranged in the middle of the longitudinal bridge-oriented stiff framework (501), and the longitudinal bridge-oriented stiff framework (501) and the longitudinal bridge-oriented main reinforcement (502) are respectively fixed with an isolation reinforcement (6), a reinforcing rib (7), a stirrup (8) and a hook reinforcement (9).
9. The segmental hoisting structure of the steel reinforcement cage of the cable tower column according to claim 5, characterized in that the segmental steel reinforcement cage (3) is rotated at the bottom of the tower column through a rotating bracket (10), the rotating bracket (10) comprises a fixed shaft (101) and a bracket (102), and the gradient of the upper surface of the bracket (102) is the same as the gradient of the segmental steel reinforcement cage (3).
10. The cable tower column segment steel reinforcement cage block hoisting structure of claim 5, characterized in that the block steel reinforcement cage (3) is hoisted by a steel reinforcement cage hoist (11), the steel reinforcement cage hoist (11) comprises a bearing beam (111), a steel wire rope (112) and an electric hoist (113), and the connecting point of the steel wire rope (112) and the electric hoist (113) is at the gravity center position of the block steel reinforcement cage (3).
CN202010920670.0A 2020-09-04 2020-09-04 Cable tower column segment reinforcement cage block hoisting construction method and structure Pending CN111996920A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113047627A (en) * 2021-02-07 2021-06-29 东南大学 Finished steel reinforcement cage grading assembly method suitable for bearing metal column template
CN113494051A (en) * 2021-08-09 2021-10-12 中铁大桥局集团有限公司 Construction method for block-by-block prefabricated installation of variable-section inclined tower steel reinforcement framework
CN113668387A (en) * 2021-07-08 2021-11-19 中交路桥建设有限公司 Modularized construction method for pier body reinforcing steel bars

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113047627A (en) * 2021-02-07 2021-06-29 东南大学 Finished steel reinforcement cage grading assembly method suitable for bearing metal column template
CN113668387A (en) * 2021-07-08 2021-11-19 中交路桥建设有限公司 Modularized construction method for pier body reinforcing steel bars
CN113494051A (en) * 2021-08-09 2021-10-12 中铁大桥局集团有限公司 Construction method for block-by-block prefabricated installation of variable-section inclined tower steel reinforcement framework

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