CN112663502B - Integral hoisting matching butt joint method for variable cross-section tower column segment steel bar part - Google Patents
Integral hoisting matching butt joint method for variable cross-section tower column segment steel bar part Download PDFInfo
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- CN112663502B CN112663502B CN202011503900.XA CN202011503900A CN112663502B CN 112663502 B CN112663502 B CN 112663502B CN 202011503900 A CN202011503900 A CN 202011503900A CN 112663502 B CN112663502 B CN 112663502B
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Abstract
The invention discloses a method for integrally hoisting, matching and butting reinforcement parts of sections of variable-section tower columns, which comprises the following steps of: arranging quick guide devices at the middle points and angular points of the sides of the top surfaces of the steel bar segments to be matched; the top of the steel bar part is provided with a multi-point lifting lug or a lifting ring; installing lifting ropes and adjustable screw rods on corresponding lifting lugs or lifting rings according to the cross sections of the steel bar parts; hoisting the steel bar part to a section to be constructed of the tower column or the pier body by using an adjustable lifting appliance and a hoisting machine; the steel bar part posture is roughly adjusted by utilizing the traction rope, the steel bar part is finely adjusted by utilizing the three-way jack on the pre-installed inner cavity support, the bottom surface of the steel bar part is butted with the quick guiding device, and the steel bar part is connected by adopting a steel bar connector. The invention effectively shortens the time of the construction process of the steel bars on the tower column, greatly reduces the steel bar operation time of operators on the high tower, greatly reduces the risk of high-altitude operation, and obviously improves the specialization and industrialization degree of steel bar engineering.
Description
Technical Field
The invention relates to the field of bridge construction. More specifically, the invention relates to an integral hoisting matching butt joint method for a variable cross-section tower column segment steel bar part.
Background
With the vigorous promotion of the infrastructure of China, the construction of a large number of river-crossing bridges and sea-crossing bridges forms the construction heat tide of bridge engineering; for the tower columns and pier columns of the large-span bridges, the structural requirements are higher than those of the conventional bridges, the sections are larger, the number of reinforcing steel bars is more, and the reinforcing steel bar engineering adopts a method of binding single reinforcing steel bars on site in the conventional construction process.
With the continuous improvement of the cable tower construction technology, the method of forming the steel bar part and integrally hoisting the segments can effectively improve the construction quality of the tower column, reduce the safety risk of high-altitude construction and improve the construction efficiency of steel bar installation to a certain extent; therefore, a tower column section steel bar part integral hoisting matching butt joint method which is convenient to construct, high in assembly degree and high in applicability needs to be designed urgently, the efficiency of the cable tower in the steel bar construction process is guaranteed, cost reduction and efficiency improvement are achieved, and the construction method has good popularization value.
Disclosure of Invention
The invention aims to solve the problems related in the background technology, provides a high tower steel bar engineering construction method with high standardization, assembly degree and industrialization degree, and realizes the integral hoisting matching butt joint method of the variable cross-section tower column section steel bar part for the integral forming and the sectional hoisting butt joint of the large section steel bar.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method for integrally hoisting, matching and butting reinforcement members of a tower column section with a variable cross-section, comprising the steps of:
the method comprises the following steps: arranging quick guide devices at the middle points and angular points of the sides of the top surfaces of the steel bar segments to be matched;
step two: the top of the steel bar part is provided with a multi-point lifting lug or a lifting ring;
step three: installing lifting ropes and adjustable screw rods on corresponding lifting lugs or lifting rings according to the cross sections of the steel bar parts;
step four: a hanging traction rope is installed at the bottom of the steel bar part in a preset mode;
step five: hoisting the steel bar part to a section to be constructed of the tower column or the pier body by using an adjustable lifting appliance and a hoisting machine;
step six: roughly adjusting the posture of the steel bar part by using a traction rope, lowering an adjustable lifting appliance onto a tower column or a pier body pre-installed inner cavity support, and finely adjusting the steel bar part in the vertical, front-back and left-right directions by using a three-way jack on the pre-installed inner cavity support to ensure that each angular point of the bottom surface of the steel bar part and the middle point of each side are butted with a quick guiding device;
step seven: after the steel bar part and the steel bar section to be matched are butted, a steel bar connector is adopted for connection.
Preferably, the adjustable spreader comprises:
the device comprises a bottom supporting beam and a plurality of hoisting supporting beams which are arranged on the bottom supporting beam in a sliding manner through a rail sliding device; the bottom supporting beam is formed by splicing two pairs of steel beams to form a groined structure, a lifting point connected with a lifting machine is arranged at the center of the groined structure of the two pairs of steel beams, and the lifting supporting beam is arranged at the end part of each pair of steel beams;
the track glide assembly includes:
the sliding guide rods are distributed at two ends of the steel beam; the sliding guide rod positioned at one end of the steel beam penetrates through the corresponding hoisting support beam and is connected with the steel beam through the locking device;
and the positioning device is fixedly arranged on the sliding guide rod in a penetrating way and is positioned on two sides of the hoisting support beam so as to fix the hoisting support beam.
Preferably, the inner cavity support is an inner mould operating platform.
Preferably, the rapid guiding means is a conical funnel structure in the form of a bell mouth.
Preferably, the reinforcing bar connector is a taper sleeve locking reinforcing bar joint.
Preferably, the aperture of the through hole for penetrating the sliding guide rod on the hoisting support beam is larger than the diameter of the sliding guide rod; the positioning device is in threaded connection with the sliding guide rod;
the positioning device includes:
the positioning block is provided with a through hole penetrating through the sliding guide rod, the through hole is provided with an internal thread, one side of the positioning block is provided with a cavity, and one side of the cavity is provided with a first groove;
the sliding rail is obliquely arranged in the cavity, a second open slot is formed in the sliding rail, and the second open slot is opposite to the first open slot;
the limiting block is provided with a sliding block, the sliding block is arranged in the sliding rail in a sliding mode, the sliding block is connected with a cylindrical fixing rod, and the fixing rod sequentially penetrates through the first open groove and the second open groove;
the limiting assembly comprises a fixed sleeve, a connecting block, a screw and a pair of nuts; the fixing sleeve is of an annular structure made of rubber, the fixing sleeve is sleeved on the fixing rod, the connecting block is connected with the fixing sleeve, the connecting block is movably arranged on the screw in a penetrating mode, two ends of the connecting block are fixed through nuts arranged on the screw in a penetrating mode, the side face of the connecting block is attached to the nuts, the screw is fixed on the side face, provided with a first groove, of the positioning block, and the screw is parallel to the first groove;
preferably, one end of the limiting block is connected with a handle, a third groove is formed in one side of the positioning block, and the handle can move along the third groove.
Preferably, in the fifth step, when the adjustable lifting tool and the lifting machine are used for lifting the steel bar part, and the projection of the side of the cross section of the steel bar part and the steel beam above the side of the cross section of the steel bar part on the horizontal plane is an obtuse angle or an acute angle, the positioning of the lifting support beam comprises the following steps:
step a: the positioning blocks of the pair of positioning devices are screwed to one end of each positioning block and abut against the hoisting support beam;
step b: after the limiting block is moved to the position where the limiting block abuts against the hoisting supporting beam, the connecting block is locked on the screw rod through the nut.
The invention at least comprises the following beneficial effects:
1. the method for integrally hoisting, matching and butting the section steel bar parts of the variable-section tower column improves the integral hoisting rigidity of the steel tower column, shortens the construction period, reduces labor and mechanical equipment investment, and finally realizes the effects of cost reduction and efficiency improvement.
2. The bottom supporting beam with the groined-shaped structure is used as a supporting foundation, and the hoisting supporting beam is used as a hoisting foundation, so that the steel bar part hoisting device is suitable for steel bar parts with different cross-sectional area sizes, and is wide in application range.
3. Stable in structure can carry out nimble adjustment according to the cross sectional dimension of required hoist and mount, utilizes the track displacement device and a hoist and mount supporting beam mutually support the position removal that realizes hoist and mount supporting beam, and then adapts to the hoist and mount demand of different cross sectional dimension's reinforcing bar portion article.
4. The hoisting rigidity and the positioning precision of the steel bar in the construction process of the steel bar part are ensured, and the technical purposes of cost reduction and efficiency improvement are realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a three-dimensional schematic view of the hoisting of a steel bar component according to the present invention;
FIG. 2 is a schematic view of a vertical plane for lifting the reinforcement part according to the present invention;
FIG. 3 is a schematic view of a hoisting plane of the reinforcement part of the present invention;
FIG. 4 is a schematic view of an elevation of a steel bar part hoisting tower according to the present invention;
FIG. 5 is a schematic elevation view of the quick guide of the present invention;
FIG. 6 is a schematic view of the positioning device of the present invention;
fig. 7 is a view of the locating block a-a of fig. 6.
Description of the reference numerals: 1 adjustable hoist, 2 lifting ropes, 3 adjustable lead screws, 4 reinforcing bar articles, 5 haulage ropes, 6 inner chamber supports, 7 three-way jacks, 8 quick guiding device, 9 tower posts, 10 bottom supporting beams, 11 hoist and mount supporting beams, 12 guide bars that slide, 13 locking device, 14 locating pieces, 15 slide rails, 16 fixed covers, 17 connecting blocks, 18 screw rods, 19 nuts, 20 handles, 21 dead levers.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 7, the invention provides a method for integrally hoisting, matching and butting reinforcement parts of a variable cross-section tower column segment, which comprises the following steps:
the method comprises the following steps: arranging a quick guide device 8 at the middle point and each angular point of each side of the top surface of the steel bar segment to be matched;
step two: the top of the steel bar part 4 is provided with a multi-point lifting lug or a lifting ring, and deformation of the steel bar part 4 in the lifting process can be effectively reduced by adopting multi-point constraint;
step three: a lifting rope 2 and an adjustable screw rod 3 are arranged on the corresponding lifting lug or lifting ring according to the section of the steel bar part 4; the connection form of the lifting appliance and the steel bar part 4 can adjust the lifting gravity center of the section of the irregular steel bar part 4 by adjusting the length of the adjustable screw rod 3 of the local lifting point;
step four: a hanging traction rope 5 is pre-arranged at the bottom of the steel bar part 4;
step five: hoisting the steel bar part 4 to a tower column 9 or a section of the pier body to be constructed by using the adjustable lifting appliance 1 and a hoisting machine;
step six: roughly adjusting the posture of the reinforced bar part 4 by using a traction rope 5, lowering an adjustable lifting appliance 1 to a tower column 9 or a pier body pre-installed inner cavity support 6, and finely adjusting the reinforced bar part 4 in the vertical, front-back and left-right directions by using a three-way jack 7 on the pre-installed inner cavity support 6, so that each angular point of the bottom surface and the middle point of each side of the reinforced bar part 4 are butted with a quick guide device 8;
step seven: and after the steel bar part 4 is butted with the steel bar section to be matched, the steel bar part is connected by a steel bar connector.
Further, the adjustable spreader 1 comprises:
the device comprises a bottom supporting beam 10 and a plurality of hoisting supporting beams 11 which are arranged on the bottom supporting beam 10 in a sliding manner through a rail sliding device, wherein the plurality of hoisting supporting beams 11 are used for hoisting reinforcing steel bar parts 4 with different sections together; the bottom supporting beam 10 is formed by splicing two pairs of steel beams to form a # -shaped structure, a lifting point connected with a lifting machine is arranged at the center of the # -shaped structure of the two pairs of steel beams, and the lifting supporting beam 11 is arranged at the end part of each pair of steel beams;
the track glide assembly includes:
a plurality of sliding guide bars 12 distributed at both ends of the steel beam; the sliding guide rod 12 at one end of the steel beam penetrates through the corresponding hoisting support beam 11 and is connected with the steel beam through a locking device 13;
and the positioning device is fixedly arranged on the sliding guide rod 12 in a penetrating way and is positioned at two sides of the hoisting support beam 11 so as to fix the hoisting support beam 11.
The adjustable lifting appliance 1 can be matched with each section according to the sizes of different sections of the steel bar parts 4.
Further, the inner cavity support 6 is an inner mold operating platform and is used as a temporary placing platform for the steel bar part 4.
Further, the rapid guiding device 8 is a conical funnel structure in a bell mouth form, and is installed at the midpoint and each corner position of the steel bar segment to be matched.
Further, the steel bar connector is a taper sleeve locking steel bar joint.
Furthermore, the aperture of the through hole for penetrating the sliding guide rod 12 on the hoisting support beam 11 is larger than the diameter of the sliding guide rod 12; the positioning device is in threaded connection with the sliding guide rod 12;
the positioning device includes:
the positioning block 14 is provided with a through hole penetrating through the sliding guide rod 12, the through hole is provided with an internal thread, one side of the positioning block 14 is provided with a cavity, and one side of the cavity is provided with a first groove;
the sliding rail 15 is obliquely arranged in the cavity, a second groove is formed in the sliding rail 15, and the second groove is opposite to the first groove;
the limiting block is provided with a sliding block, the sliding block is arranged in the sliding rail 15 in a sliding mode, the sliding block is connected with a cylindrical fixing rod 21, and the fixing rod 21 sequentially penetrates through the first open groove and the second open groove;
the limiting assembly comprises a fixed sleeve 16, a connecting block 17, a screw 18 and a pair of nuts 19; the fixing sleeve 16 is of an annular structure made of rubber, the fixing sleeve 16 is sleeved on a fixing rod 21, the connecting block 17 is connected with the fixing sleeve 16, the connecting block 17 is movably arranged on a screw rod 18 in a penetrating manner, two ends of the connecting block 17 are fixed through nuts 19 arranged on the screw rod 18 in a penetrating manner, the side surface of the connecting block 17 is attached to the nuts 19, the screw rod 18 is fixed on the side surface of the positioning block 14 with a first groove, and the screw rod 18 is parallel to the first groove;
furthermore, one end of the limiting block is connected with a handle 20, a third opening is formed in one side of the positioning block 14, and the handle 20 can move along the third opening.
Further, in the fifth step, when the adjustable lifting tool 1 and the lifting machine are used to lift the steel bar part 4, and the projection of the side of the cross section of the steel bar part 4 and the steel beam above the side of the cross section of the steel bar part 4 on the horizontal plane is an obtuse angle or an acute angle (as shown in fig. 3), in order to ensure that the lifting support beam 11 is parallel to the side of the cross section of the corresponding steel bar part 4, the method for positioning the lifting support beam 11 includes the following steps:
step a: one end of each positioning block 14, which is screwed to the positioning blocks 14, of each positioning device is abutted against the hoisting support beam 11;
step b: after the limiting block is moved to abut against the hoisting support beam 11, the connecting block 17 is locked on the screw rod 18 through the nut 19.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (8)
1. The integral hoisting matching butt joint method for the steel bar part of the variable cross-section tower column segment is characterized by comprising the following steps of:
the method comprises the following steps: arranging quick guide devices at the middle points and angular points of the sides of the top surfaces of the steel bar segments to be matched;
step two: the top of the steel bar part is provided with a multi-point lifting lug or a lifting ring;
step three: installing lifting ropes and adjustable screw rods on corresponding lifting lugs or lifting rings according to the cross sections of the steel bar parts;
step four: a hanging traction rope is installed at the bottom of the steel bar part in a preset mode;
step five: hoisting the steel bar part to a section to be constructed of the tower column or the pier body by using an adjustable lifting appliance and a hoisting machine;
step six: roughly adjusting the posture of the reinforced bar part by using a traction rope, lowering an adjustable lifting appliance to a tower column or a pier body pre-installed inner cavity support, and finely adjusting the reinforced bar part in the vertical, front-back and left-right directions by using a three-way jack on the pre-installed inner cavity support to ensure that each angular point of the bottom surface of the reinforced bar part and the middle point of each side are butted with a quick guide device;
step seven: after the steel bar part and the steel bar section to be matched are butted, a steel bar connector is adopted for connection.
2. The method for integrally hoisting, matching and butting reinforcement parts of tower column sections with variable cross sections according to claim 1, wherein the adjustable lifting tool comprises:
the device comprises a bottom supporting beam and a plurality of hoisting supporting beams which are arranged on the bottom supporting beam in a sliding manner through a rail sliding device; the bottom supporting beam is formed by splicing two pairs of steel beams to form a groined structure, a plurality of lifting points are arranged on the groined structure, the geometric centers of the plurality of lifting points are superposed with the geometric center of the groined structure, and the hoisting supporting beams are arranged at the end parts of each pair of steel beams;
the track glide assembly includes:
the sliding guide rods are distributed at two ends of the steel beam; the sliding guide rod at one end of the steel beam penetrates through the corresponding hoisting support beam and is connected with the steel beam through the locking device;
and the positioning device is fixedly arranged on the sliding guide rod in a penetrating way and is positioned on two sides of the hoisting support beam so as to fix the hoisting support beam.
3. The method for integrally hoisting, matching and butting the steel bar components of the tower column section with the variable cross section according to claim 1 or 2, wherein the inner cavity support is an inner mold operating platform.
4. The method for integrally hoisting, matching and butting reinforcement parts of tower column sections with variable cross sections as claimed in claim 1, wherein the rapid guiding device is a conical funnel structure in the form of a bell mouth.
5. The method for integrally hoisting, matching and butting the steel bar parts of the sections of the variable-cross-section tower column according to claim 1, wherein the steel bar connector is a taper sleeve locking steel bar joint.
6. The method for integrally hoisting, matching and butting the section steel bar parts of the variable-section tower column according to claim 2, wherein the diameter of a through hole for penetrating the sliding guide rod on the hoisting support beam is larger than the diameter of the sliding guide rod; the positioning device is in threaded connection with the sliding guide rod;
the positioning device includes:
the positioning block is provided with a through hole penetrating through the sliding guide rod, the through hole is provided with an internal thread, one side of the positioning block is provided with a cavity, and one side of the cavity is provided with a first groove;
the sliding rail is obliquely arranged in the cavity, a second open slot is formed in the sliding rail, and the second open slot is opposite to the first open slot;
the limiting block is provided with a sliding block, the sliding block is arranged in the sliding rail in a sliding mode, the sliding block is connected with a cylindrical fixing rod, and the fixing rod sequentially penetrates through the first open groove and the second open groove;
the limiting component comprises a fixed sleeve, a connecting block, a screw and a pair of nuts; the fixed cover is the loop configuration of rubber preparation, fixed cover is located on the dead lever, the connecting block with fixed cover is connected, the connecting block is mobilizable to wear to locate on the screw rod, the both ends of connecting block are fixed through the nut of wearing to locate on the screw rod, the side and the nut laminating of connecting block, the screw rod is fixed in the locating piece and has first grooved side, just the screw rod with first fluting is parallel.
7. The method for integrally hoisting, matching and butting the steel bar parts of the tower column sections with the variable cross sections as claimed in claim 6, wherein one end of the limiting block is connected with the handle, one side of the positioning block is provided with a third slot, and the handle can move along the third slot.
8. The method for integrally hoisting, matching and butting the reinforced bar parts of the sections of the variable-section tower column according to claim 6 or 7, wherein in the fifth step, when the reinforced bar parts are hoisted by using an adjustable hoist and a hoisting machine, and the projection of the side of the cross section of each reinforced bar part and the steel beam above the side of the cross section of each reinforced bar part on the horizontal plane is an obtuse angle or an acute angle, the method for positioning the hoisting support beams comprises the following steps:
step a: the positioning blocks of the pair of positioning devices are screwed to one end of each positioning block and abut against the hoisting support beam;
step b: after the limiting block is moved to the position where the limiting block abuts against the hoisting supporting beam, the connecting block is locked on the screw rod through the nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011503900.XA CN112663502B (en) | 2020-12-18 | 2020-12-18 | Integral hoisting matching butt joint method for variable cross-section tower column segment steel bar part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011503900.XA CN112663502B (en) | 2020-12-18 | 2020-12-18 | Integral hoisting matching butt joint method for variable cross-section tower column segment steel bar part |
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| CN112663502A CN112663502A (en) | 2021-04-16 |
| CN112663502B true CN112663502B (en) | 2022-06-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113494051B (en) * | 2021-08-09 | 2022-11-01 | 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 |
| CN114273809B (en) * | 2021-12-23 | 2023-03-21 | 中交第二航务工程局有限公司 | Flexible manufacturing method of steel bar block |
| CN116553029B (en) * | 2023-05-17 | 2024-01-23 | 湖南筑睿重工科技股份有限公司 | Butt joint position guiding device for vertical tank hoisting based on visual operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104153299B (en) * | 2014-08-21 | 2016-06-08 | 中交第一航务工程局有限公司 | The overall docking calculation of large-scale pier stud concrete reinforcement |
| CN106930192B (en) * | 2017-04-21 | 2018-12-18 | 中交一公局第一工程有限公司 | Assembled variable cross-section contracture sliding mode system and its construction method |
| KR102059552B1 (en) * | 2017-10-12 | 2019-12-26 | 현대건설(주) | Modular work platform of a long span bridge main tower rebar and construction method using the same |
| CN109183628B (en) * | 2018-10-30 | 2020-04-03 | 中交第二航务工程局有限公司 | Method for manufacturing steel bar part of oversized variable-cross-section cable tower |
| CN112030723B (en) * | 2020-07-31 | 2021-11-02 | 湖南省交通规划勘察设计院有限公司 | Bridge pier column and pier column joint structure thereof |
| CN111996920A (en) * | 2020-09-04 | 2020-11-27 | 贵州省公路工程集团有限公司 | Cable tower column segment reinforcement cage block hoisting construction method and structure |
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