CN116065489A - Hydraulic climbing formwork construction method for tower column of dome-shaped single-tower cable-stayed bridge - Google Patents
Hydraulic climbing formwork construction method for tower column of dome-shaped single-tower cable-stayed bridge Download PDFInfo
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- CN116065489A CN116065489A CN202211599728.1A CN202211599728A CN116065489A CN 116065489 A CN116065489 A CN 116065489A CN 202211599728 A CN202211599728 A CN 202211599728A CN 116065489 A CN116065489 A CN 116065489A
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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Abstract
The invention provides a hydraulic climbing formwork construction method for a tower column of a circular arch single-tower cable-stayed bridge, which comprises the following steps: s1, dividing a basic section; s2, pouring an nth basic section; s3, pouring an n+1th foundation section; s4, demolding the n+1th foundation section, driving the climbing operation platform to climb to the n+1th foundation section by using the power of the hydraulic system, and driving the template to be close to the tower column; s5, pouring an n+2 section foundation section; repeating demolding and lifting the climbing operation platform on the n+2th foundation section, and sequentially completing pouring of the n+2+m th foundation section; the climbing operation platform is arranged on the tower column, wherein the template is kept to be gradually inclined along with the change of the inclination rate of the tower column, and the climbing operation platform is kept to be in a horizontal state all the time. The invention solves the technical problems that the inclination of the template system cannot be accurately controlled and the change of the axis and the section of the tower column of the template cannot be adapted in the prior art.
Description
Technical Field
The invention relates to the field of cable-stayed bridge tower column construction, in particular to a hydraulic climbing formwork construction method for a circular arch single-tower cable-stayed bridge tower column.
Background
The traditional method of cable-stayed bridge tower column construction adopts a hydraulic climbing die to construct, and the section and the gradient of the special-shaped tower column are changed, if the traditional method is adopted, the template is required to be remade during the construction of each stage of the circular arch due to the change of the section size of the tower column, the gradient of the template system is continuously changed according to the gradient of the tower column, the gradient of the template system cannot be accurately controlled, the change of the axis and the section of the tower column of the template cannot be adapted, and the problem that the size of the template is frequently changed due to the change of the section of the tower column in the construction process occurs. The construction error of the tower column is large, the line type is poor, and the construction progress is slow.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a hydraulic climbing formwork construction method for a tower column of a circular arch single-tower cable-stayed bridge, which solves the technical problems that the inclination of a formwork system cannot be accurately controlled and the change of the axial line and the section of the tower column of the formwork cannot be adapted in the prior art.
According to the embodiment of the invention, the hydraulic climbing formwork construction method for the tower column of the dome-shaped single-tower cable-stayed bridge comprises the following steps of:
s1, dividing a tower column into a plurality of foundation sections with different inclination rates;
s2, pouring an nth basic section of the tower column on the basis of the template;
s3, splicing a climbing operation platform on the nth foundation section, and pouring the (n+1) th foundation section on the basis of a template;
s4, backing the template to be separated from the n+1th foundation section, driving the climbing operation platform to climb to the n+1th foundation section by utilizing the power of the hydraulic system, and driving the template to be close to the tower column;
s5, pouring an n+2 section of foundation section on the basis of the template;
s5, defining the n+2 foundation section as the current foundation section after pouring of the n+2 foundation section is completed, repeatedly demolding and lifting the climbing operation platform on the n+2 foundation section, and sequentially completing pouring of the n+2+m foundation section;
when the climbing operation platform climbs to the corresponding foundation section, the template is kept to incline gradually along with the change of the inclination rate of the tower column, and the climbing operation platform is kept in a horizontal state all the time.
Preferably, the making of the template includes:
a backward moving beam platform is arranged on the climbing operation platform;
a plurality of groups of upper truss upright pole groups which are arranged in a linear array are arranged on the backward beam platform, and each group of upper truss upright pole groups are connected by an upper truss diagonal bracing;
and installing the templates on the upper truss upright rod group.
Preferably, the two ends of the upper truss upright are connected with the upper truss upright in a telescopic way.
Preferably, the manufacturing of the climbing operation platform comprises the following steps:
installing the guide rail on the poured foundation section;
a hydraulic driving mechanism and a bearing tripod upright rod are respectively arranged on the guide rail;
tripod diagonal braces and bearing beam connecting seats are respectively arranged on the bearing tripod vertical rods, and the bearing beam connecting seats are used for being connected with the backward beam platform.
Preferably, the two ends of the tripod diagonal bracing are respectively connected with the bearing tripod upright rod and the bearing beam connecting seat in a telescopic manner.
Preferably, the upper truss diagonal and the tripod diagonal are mounted in opposite oblique directions.
Preferably, the templates in steps S1, S2, S3, S4, S5 are mounted on the respective sides of the tower.
Preferably, the construction method further comprises the steps of:
s6, constructing a main tower folding section, removing climbing operation platforms and templates on the inner sides of the double-tower columns, replacing the climbing operation platforms and templates with steel arch shaping rigid templates, pouring the main tower folding section according to the templates on each side, supplementing the templates on the rest part by using the steel arch shaping rigid templates, and installing pull rods between the steel arch shaping rigid templates on two sides.
Preferably, the shaping rigid inner lining plate corresponding to the main tower landscape groove is attached to the template at the side of the tower column at the position of the width change of the main tower landscape groove.
Preferably, a main working platform, a reinforcing steel bar platform, a pouring working platform, a hanging working platform and a decoration platform are arranged on the climbing operation platform.
Compared with the prior art, the invention has the following beneficial effects: dividing a cable-stayed bridge dome-shaped tower column into a plurality of foundation sections with different inclination rates for construction so as to achieve the effect of being dome-shaped as a whole; the climbing operation platform is matched with the hydraulic system, so that the template is convenient and fast to ascend in the construction process, the change of the inclination rate of the arched tower column is adapted, the template is inclined along with the change of the inclination rate of the tower column, and the climbing operation platform is always in a horizontal state; meanwhile, the climbing operation platform can provide an operation platform for the construction of steel bars, templates and concrete in the construction process, and has the characteristics of convenience in construction and safety in operation.
Drawings
FIG. 1 is a layered view of a cable-stayed bridge dome-shaped pylon according to one embodiment of the present invention;
FIG. 2 is a schematic view of a climbing platform and form in accordance with one embodiment of the present invention;
FIG. 3 is a schematic view of a climb cycle in accordance with an embodiment of the invention.
In the figure:
1. a template; 2. a rear-moving beam platform; 3. an upper truss pole set; 4. an upper truss diagonal bracing; 5. climbing the operation platform; 6. a guide rail; 7. a bearing tripod upright rod; 8. tripod diagonal bracing; 9. and a spandrel girder connecting seat.
Detailed Description
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The invention will be further described with reference to fig. 1-3.
A hydraulic climbing formwork construction method for a tower column of a circular arch single-tower cable-stayed bridge comprises the following steps:
s1, dividing a tower column into a plurality of foundation sections with different inclination rates;
s2, pouring an nth basic section of the tower column on the basis of the template;
s3, splicing a climbing operation platform on the nth foundation section, and pouring the (n+1) th foundation section on the basis of a template;
s4, backing the template to be separated from the n+1th foundation section, driving the climbing operation platform to climb to the n+1th foundation section by utilizing the power of the hydraulic system, and driving the template to be close to the tower column;
s5, pouring an n+2 section of foundation section on the basis of the template;
s5, defining the n+2 foundation section as the current foundation section after pouring of the n+2 foundation section is completed, repeatedly demolding and lifting the climbing operation platform on the n+2 foundation section, and sequentially completing pouring of the n+2+m foundation section;
when the climbing operation platform climbs to the corresponding foundation section, the template is kept to incline gradually along with the change of the inclination rate of the tower column, and the climbing operation platform is kept in a horizontal state all the time.
In this embodiment, as shown in fig. 1, a cable-stayed bridge dome-shaped tower column is divided into a plurality of foundation segments with different inclination rates for construction, so as to achieve the effect of being a dome shape as a whole; such as: before construction, the axis inclination rate of the circular arch-shaped tower column is fully considered, the tower column is reasonably subjected to stage by stage, the circular arch-shaped tower column is converted into a plurality of foundation sections with different inclination rates, and construction is performed, so that the linearity of the circular arch-shaped tower column is ensured while the construction of the foundation sections is ensured; as shown in fig. 2 and 3, the template adopts a shaping and special-shaped combined steel-wood template, the wood template system mainly comprises three parts of plywood, a woodworking girder and a back steel wall , and the chamfering part adopts a steel template; the technological process of climbing form construction is as follows: firstly, constructing and pouring a first section of foundation section of an upper (lower) tower column by using a template part above a climbing operation platform or a separately manufactured template and a scaffold; then demoulding, mounting a suspension climbing boot on the side wall of the concrete, and then mounting a climbing operation platform and the components above, so that the construction of the second section of foundation section can be satisfied; when the second section of foundation section is completed, the template is retreated to separate from the concrete surface of the position, the suspension climbing shoes are installed on the concrete side surface of the position, the guide rail is inserted into the suspension climbing shoes from top to bottom and fastened, and then the hydraulic system is installed on the guide rail; the electromechanical control board can be operated after the inspection is correct, and the hydraulic system is driven to lift the climbing operation platform; after lifting in place, anchoring and locking the climbing operation platform, and driving the template to approach the tower column to start construction of the third section of foundation section; the standard operating program described above can be cycled from the third base segment, namely: the mould is removed, a suspension climbing boot is installed, a guide rail is lifted and locked, a hydraulic system is started to lift a climbing operation platform, the climbing operation platform is locked, and the mould is driven to approach a tower column to complete mould supporting and pouring of the concrete of the current foundation section.
The construction process of the foundation section comprises the following steps: construction paying-off, assembling a climbing operation platform, installing a segment stiffness framework, lengthening steel bars, binding segment steel bars, positioning and installing an inner side template and an outer side template, checking visas, pouring foundation segment concrete, curing, roughening and dismantling templates, installing a next segment stiffness framework, lengthening steel bars and binding a next segment steel bar, lifting a guide rail, lifting the climbing operation platform, installing the inner side template and the outer side template, checking visas, pouring foundation segment concrete, curing, roughening and dismantling segment templates, and repeating the construction of the next foundation segment. And (3) finishing the construction of the steel bar, climbing the operation platform in place, positioning and installing the template, and carrying out concrete pouring after the adjustment is qualified, wherein the concrete is lifted to the current foundation section through a concrete pump truck or a tower crane bucket to carry out the concrete pouring.
As shown in fig. 3, the climbing flow: after the concrete is poured, removing the mould and moving backward, installing an accessory device, lifting a guide rail, climbing an operation platform, binding steel bars, cleaning a template with a release agent, fixing a buried piece on the template, closing the mould and pouring the concrete.
In this process, in order to be adapted to the foundation section of different inclination, the template is inclined along with its gradient all the time when pouring arbitrary foundation section, and climbs operating platform and be in the horizontality all the time, so to avoid the condition that need reform the template when the construction of each foundation section of dome to prevent that the tower construction error is big, the line type is poor, the condition that the construction progress is slow.
The manufacture of the template 1 comprises the following steps:
a backward moving beam platform 2 is arranged on the climbing operation platform 5;
a plurality of groups of upper truss upright pole groups 3 which are arranged in a linear array are arranged on the backward beam platform 2, and each group of upper truss upright pole groups 3 are connected by an upper truss diagonal strut 4;
installing the template 1 on the upper truss upright rod group 3;
further, the two ends of the upper truss upright rod are connected with the upper truss upright rod in a telescopic way.
In this embodiment, as shown in fig. 2, for mold closing and releasing, a rear-moving beam platform 2 is provided for driving the mold plate 1 to approach or depart from the current base section; in order to enable the template 1 to incline along with each foundation section, a plurality of groups of upper truss upright pole groups (two upper truss upright poles 3 which are arranged at intervals are arranged in one group) are arranged on the backward beam platform 2 so as to play a role in supporting the template 1; the two upper truss upright rods 3 are connected through an upper truss diagonal bracing 4; the upper truss diagonal bracing 4 is telescopic so as to change the inclination rate of the template 1, so that the upper truss diagonal bracing can adapt to the inclination rate change of the dome-shaped tower column, and pouring of each foundation section can be completed by only one template 1.
The manufacture of the climbing operation platform 5 comprises the following steps:
mounting the guide rail 6 on the poured foundation section;
a hydraulic driving mechanism and a bearing tripod upright rod 7 are respectively arranged on the guide rail 6;
tripod diagonal braces 8 and bearing beam connecting seats 9 are respectively arranged on the bearing tripod vertical rods 7, and the bearing beam connecting seats 9 are used for being connected with the backward beam platform 2;
further, the two ends of the tripod diagonal bracing 8 are connected with the bearing tripod upright rod 7 and the bearing beam connecting seat 9 in a telescopic mode.
In this embodiment, as shown in fig. 2, in order to achieve the purpose of climbing the climbing operation platform, a guide rail is mounted on a base section, and a hydraulic system is used to climb a bearing tripod upright; in order to enable the template to synchronously move along with the template, the bearing tripod upright rod is connected with the backward moving beam platform through a bearing beam connecting seat; meanwhile, in order to keep the whole climbing operation platform horizontal all the time, the tripod diagonal bracing is telescopic so as to switch different positions according to the inclination rate of the foundation section; preferably, the upper truss diagonal and the tripod diagonal are mounted in opposite oblique directions. The perpendicularity and levelness of the template and the climbing operation platform are controlled through the telescopic threaded connection of the upper truss diagonal bracing and the tripod diagonal bracing, so that the template is guaranteed to be continuously inclined along with the change of the inclination rate of the template in the process of the inclination of the foundation section, the feasibility of construction is guaranteed, and the climbing operation platform is kept horizontal at all times in the process of the continuous inclination of the foundation section, so that the safety of construction is guaranteed.
The templates in steps S1, S2, S3, S4, S5 are mounted on the respective sides of the tower.
In the embodiment, the change of the section of each basic section is fully considered in the template manufacturing process, the vertical plane template is enlarged in size, the curved surface template is "outsourced" so that the size of the circular arch outer side direction of the vertical plane template is enlarged by 40 cm when the curved surface template is inclined in the basic section changing process, the curved surface direction template is fully "wrapped", the climbing operation platform is adjusted in level through the tripod diagonal bracing, and convenience and safety in construction are guaranteed.
The construction method further comprises the following steps:
s6, constructing a main tower folding section, removing climbing operation platforms and templates on the inner sides of the double-tower columns, replacing the climbing operation platforms and templates with steel arch shaping rigid templates, pouring the main tower folding section according to the templates on each side, supplementing the templates on the rest part by using the steel arch shaping rigid templates, and installing pull rods between the steel arch shaping rigid templates on two sides.
In this embodiment, when the climbing formwork of the folding section of the main tower is constructed, the climbing formwork system is firstly converted, after the construction of the foundation section of the folding section of the main tower is completed, the formwork and the climbing operation platform of the inner side surfaces of the double tower columns are firstly removed, the steel arch frame section steel formwork is adopted, each tower column only leaves three climbing operation platforms and the formwork, the formwork on the north-south side of the tower column is used as the formwork on the rest of the north-south side of the folding section to be filled while the original formwork is utilized, and the opposite pull rods are arranged on the formworks on the two sides to realize the folding of the two tower columns.
And attaching the shaping rigid mold lining plate corresponding to the main tower landscape groove on the template positioned on the side surface of the tower column at the width change position of the main tower landscape groove.
In the embodiment, the lining plate of the shaping rigid mould is attached to the side mould, so that the linearity of the landscape groove is ensured to be smooth in construction.
And a main working platform, a reinforcing steel bar platform, a pouring working platform, a hanging working platform and a decoration platform are arranged on the climbing operation platform.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The hydraulic climbing formwork construction method for the tower column of the circular arch single-tower cable-stayed bridge is characterized by comprising the following steps of:
s1, dividing a tower column into a plurality of foundation sections with different inclination rates;
s2, pouring an nth basic section of the tower column on the basis of the template;
s3, splicing a climbing operation platform on the nth foundation section, and pouring the (n+1) th foundation section on the basis of a template;
s4, backing the template to be separated from the n+1th foundation section, driving the climbing operation platform to climb to the n+1th foundation section by utilizing the power of the hydraulic system, and driving the template to be close to the tower column;
s5, pouring an n+2 section of foundation section on the basis of the template;
s5, defining the n+2 foundation section as the current foundation section after pouring of the n+2 foundation section is completed, repeatedly demolding and lifting the climbing operation platform on the n+2 foundation section, and sequentially completing pouring of the n+2+m foundation section;
when the climbing operation platform climbs to the corresponding foundation section, the template is kept to incline gradually along with the change of the inclination rate of the tower column, and the climbing operation platform is kept in a horizontal state all the time.
2. The hydraulic climbing formwork construction method for the pylon of the circular arch single-pylon cable-stayed bridge according to claim 1, wherein the manufacturing of the formwork comprises the following steps:
a backward moving beam platform is arranged on the climbing operation platform;
a plurality of groups of upper truss upright pole groups which are arranged in a linear array are arranged on the backward beam platform, and each group of upper truss upright pole groups are connected by an upper truss diagonal bracing;
and installing the templates on the upper truss upright rod group.
3. The hydraulic climbing formwork construction method for the tower column of the dome-shaped single-tower cable-stayed bridge according to claim 2, wherein the two ends of the upper truss upright are connected with the upper truss upright in a telescopic manner.
4. A method of hydraulic climbing formwork construction for a pylon of a dome-shaped single-pylon cable-stayed bridge according to claim 2 or 3, wherein the making of the climbing platform comprises:
installing the guide rail on the poured foundation section;
a hydraulic driving mechanism and a bearing tripod upright rod are respectively arranged on the guide rail;
tripod diagonal braces and bearing beam connecting seats are respectively arranged on the bearing tripod vertical rods, and the bearing beam connecting seats are used for being connected with the backward beam platform.
5. The hydraulic climbing formwork construction method for the tower column of the circular arch single-tower cable-stayed bridge according to claim 4, wherein the two ends of the tripod diagonal bracing are connected with the bearing tripod vertical rod and the bearing beam connecting seat in a telescopic mode respectively.
6. The hydraulic climbing formwork construction method for the pylon of the circular arch type single-pylon cable-stayed bridge according to claim 4, wherein the upper truss diagonal bracing and the tripod diagonal bracing are installed in opposite inclined directions.
7. The hydraulic climbing formwork construction method for the tower column of the circular arch single-tower cable-stayed bridge according to claim 1, wherein the templates in the steps S1, S2, S3, S4 and S5 are respectively arranged on each side surface of the tower column.
8. The hydraulic climbing formwork construction method for the pylon of the dome-shaped single-pylon cable-stayed bridge according to claim 7, further comprising the following steps:
s6, constructing a main tower folding section, removing climbing operation platforms and templates on the inner sides of the double-tower columns, replacing the climbing operation platforms and templates with steel arch shaping rigid templates, pouring the main tower folding section according to the templates on each side, supplementing the templates on the rest part by using the steel arch shaping rigid templates, and installing pull rods between the steel arch shaping rigid templates on two sides.
9. The hydraulic climbing formwork construction method for the circular arch single tower cable-stayed bridge tower column according to claim 8, wherein the shaping rigid inner lining plate corresponding to the width change of the main tower landscape groove is attached to the formwork positioned at the side face of the tower column.
10. The hydraulic climbing formwork construction method for the tower column of the circular arch single-tower cable-stayed bridge according to claim 1, wherein a main working platform, a reinforcing steel bar platform, a pouring working platform, a hanging working platform and a finishing platform are installed on a climbing operation platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211599728.1A CN116065489A (en) | 2022-12-14 | 2022-12-14 | Hydraulic climbing formwork construction method for tower column of dome-shaped single-tower cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211599728.1A CN116065489A (en) | 2022-12-14 | 2022-12-14 | Hydraulic climbing formwork construction method for tower column of dome-shaped single-tower cable-stayed bridge |
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| Publication Number | Publication Date |
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| CN116065489A true CN116065489A (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211599728.1A Pending CN116065489A (en) | 2022-12-14 | 2022-12-14 | Hydraulic climbing formwork construction method for tower column of dome-shaped single-tower cable-stayed bridge |
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| Country | Link |
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| CN (1) | CN116065489A (en) |
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- 2022-12-14 CN CN202211599728.1A patent/CN116065489A/en active Pending
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