CN110778116B - Construction method of complex curved surface giant concrete beam tube structure - Google Patents
Construction method of complex curved surface giant concrete beam tube structure Download PDFInfo
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- CN110778116B CN110778116B CN201911044731.5A CN201911044731A CN110778116B CN 110778116 B CN110778116 B CN 110778116B CN 201911044731 A CN201911044731 A CN 201911044731A CN 110778116 B CN110778116 B CN 110778116B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a construction method of a complicated curved surface giant concrete beam tube structure, which comprises a construction bearing platform; providing a plurality of stiff steel skeleton columns matched with the curved surface of the beam tube structure, uniformly distributing the stiff steel skeleton columns on the bearing platform, and symmetrically installing the stiff steel skeleton columns in pairs; erecting a column mould frame on the bearing platform; a column inner mold is erected on the column mold frame and correspondingly arranged on the inner side of the stiff steel rib column; binding column steel bars in the stiff steel rib column to form a steel bar mesh, penetrating a guide rope in the steel bar mesh, arranging a vibrating rod on the guide rope in a sliding manner, and placing the vibrating rod at the bottom of the stiff steel rib column; paving a column external mold and a column side mold outside the stiff steel rib column and the steel mesh, and enclosing and synthesizing a column space to be poured by utilizing the column external mold, the column side mold and the column internal mold; pouring concrete rigid columns in the column spaces, vibrating the poured concrete by the vibrating rod, upwards pulling the vibrating rod to move from the bottom to the top of the poured concrete along the guide rope, and drawing out the vibrating rod after pouring; a plurality of concrete strength columns are connected to a roof structure constructed on the concrete strength columns.
Description
Technical Field
The invention relates to the field of building construction, in particular to a construction method of a complex curved surface giant concrete beam tube structure.
Background
The giant concrete beam tube structure with the complex curved surface has the following characteristics: the curvature of the beam barrel structure is different in size, and the requirement on measurement and positioning accuracy is high. The beam tube structure comprises a stiff steel rib column, is inclined and large in inclination angle, the upper part of the beam tube structure is a fold line-shaped roof structure, the fold points with unequal heights are more, the top height and the gradient of the root of a floor slab are larger, and the structural construction difficulty is large.
When the beam barrel structure is a longitudinal curved surface, the stiff steel rib columns are obliquely installed, steel bars at column nodes are densely crossed, most of the prior art adopts a quick-inserting and slow-pulling inserting type vibrating method for vibrating, but the steel bars at the column nodes are densely distributed, and vibrating rods cannot penetrate through a dense steel bar mesh, so that the problem of local leakage vibration can be caused, and in addition, the vibrating rods easily collide with the steel bar mesh when being pulled out, so that the strength of a member is influenced. The concrete vibration construction is difficult.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a construction method of a complicated curved surface giant concrete bundle cylinder structure, and solves the problems that in the prior art, the vibration is carried out by adopting a quick-inserting and slow-pulling inserting type vibration method, but the arrangement of reinforcing steel bars at column nodes is dense, the vibration bars cannot penetrate through a dense reinforcing mesh, and local vibration leakage can be caused, and in addition, the vibration bars are easy to collide with the reinforcing mesh when being pulled out, so that the strength of a member is influenced. The concrete is difficult to vibrate and construct.
The technical scheme for realizing the purpose is as follows:
the invention provides a construction method of a complicated curved surface giant concrete beam tube structure, which comprises the following construction steps:
constructing an annular bearing platform at a position to be constructed;
providing a plurality of stiff steel rib columns matched with the curved surface of the concrete beam tube structure to be formed, uniformly distributing the stiff steel rib columns on the bearing platform, and symmetrically installing the stiff steel rib columns in pairs;
erecting a column formwork on the bearing platform and correspondingly positioned on the inner side of the stiff steel rib column;
a column inner mold is erected on the column mold frame, the curvature of the column inner mold is matched with the curvature of the concrete beam tube structure to be formed, and the column inner mold is correspondingly arranged on the inner side of the stiff steel rib column;
binding column steel bars in the stiff steel rib column to form a steel bar mesh, penetrating a guide rope into the steel bar mesh, arranging a vibrating rod on the guide rope in a sliding manner, and placing the vibrating rod at the bottom of the stiff steel rib column;
paving a column external mold and a column side mold outside the stiff steel rib column and the steel mesh, and enclosing the corresponding stiff steel rib column by using the column external mold, the column side mold and the column internal mold to form a column space to be poured;
pouring concrete in the column space to be poured to form a concrete rigid column, vibrating the poured concrete by the vibrating rod in the concrete pouring process and pulling the vibrating rod upwards so that the vibrating rod moves from the bottom to the top of the poured concrete along the guide rope, and drawing out the vibrating rod along the guide rope after the concrete pouring is finished; and
and constructing a roof structure on the plurality of concrete rigid columns, and connecting the plurality of concrete rigid columns together through the roof structure.
The construction method of the complicated curved surface giant concrete bundle cylinder structure is further improved in that the vibrating rod and the top surface of the concrete rise synchronously.
The construction method of the complicated curved surface giant concrete beam tube structure is further improved in that when the guide rope is installed, the construction method further comprises the following steps:
and providing a fixing piece, fixedly installing the fixing piece at the bottom of the steel bar mesh, fixedly connecting one end of the guide rope to the fixing piece, and correspondingly connecting the other end of the guide rope to the top of the steel bar mesh.
The construction method of the complicated curved surface giant concrete bundle cylinder structure is further improved in that the fixing piece is a hook, one end of the hook is bound and fixed on the reinforcing mesh, and the other end of the hook hooks the guide rope.
The construction method of the complicated curved surface giant concrete beam tube structure is further improved in that when the vibrating rod is installed on the guide rope, the construction method further comprises the following steps:
and installing an annular piece at the side part of the vibrating rod, and sleeving the annular piece on the guide rope so that the vibrating rod can move up and down along the guide rope.
The construction method of the complicated curved surface giant concrete beam tube structure is further improved in that the annular pieces are arranged at intervals along the length direction of the vibrating rod and are arranged on the same side of the vibrating rod.
The construction method of the complicated curved surface giant concrete beam tube structure is further improved in that the annular piece is a nut, and the nut is bound and fixed on the vibrating rod through a binding belt.
The construction method of the complex curved surface giant concrete beam tube structure is further improved in that the installation of the stiff steel rib column comprises the following steps:
dividing the stiff steel rib column into a plurality of steel rib column sections;
positioning and fixing the steel rib column section on the bearing platform; and
from up in proper order successive layer installation from the bottom correspond the layer the reinforcing bar column section is up to assembling a plurality of reinforcing bar column sections and connecting and form strength nature reinforcing bar post.
The construction method of the complicated curved surface giant concrete bundle tube structure is further improved in that cement paste is poured to form a joint for connecting concrete poured twice before the next concrete pouring.
The construction method of the complicated curved surface giant concrete bundle tube structure is further improved in that a through type condensation cooling pipe is laid in the concrete in the process of pouring the concrete so as to reduce the temperature in the concrete.
The complex curved surface giant concrete beam tube structure has the beneficial effects that:
according to the invention, the guide rope is arranged in the reinforcing mesh, the vibrating rod is slidably arranged on the guide rope, the vibrating rod is pulled upwards in the concrete pouring process, and moves from the bottom to the top of the poured concrete along the guide rope, so that the concrete is vibrated along a pre-designed vibrating path, and the problems that in the prior art, the vibrating rod is vibrated by a quick-inserting and slow-pulling inserting vibrating method, but the arrangement of reinforcing steel bars at column nodes is dense, the vibrating rod cannot penetrate through the dense reinforcing mesh, and local vibration leakage is possibly caused are solved, and in addition, the vibrating rod easily collides with the reinforcing mesh when pulled out, and influences the strength of a member. The concrete is difficult to vibrate and construct.
Drawings
Fig. 1 is a schematic view of a plurality of stiff steel reinforced columns of the complex curved surface giant concrete bundle tube structure of the present invention.
FIG. 2 is a plane distribution diagram of the complex curved surface giant concrete beam tube structure of the present invention.
FIG. 3 is a longitudinal sectional view of the steel reinforced steel column and column form of the complex curved surface giant concrete beam tube structure of the present invention.
FIG. 4 is a longitudinal sectional view of the roof framework and roof formwork of the complex curved surface giant concrete beam tube structure of the present invention.
FIG. 5 is a longitudinal sectional view of a notch at the bottom of the complex curved surface giant concrete beam tube structure of the present invention.
FIG. 6 is a schematic view of the roof with a complicated curved surface and a huge concrete beam tube structure according to the present invention.
FIG. 7 is a schematic view of the arrangement of the vibrating rods of the complex curved surface giant concrete bundle cylinder structure of the present invention.
FIG. 8 is a partial cross-sectional view of the construction of the vibrating rod of the complex curved surface giant concrete beam tube structure of the present invention.
FIG. 9 is a schematic view of the connection structure of the vibrating rod and the guide rope of the complex curved surface giant concrete beam tube structure of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, a schematic diagram of a plurality of stiff steel reinforced columns of the complex curved surface giant concrete beam tube structure of the present invention is shown. FIG. 2 is a plane distribution diagram of the complex curved surface giant concrete beam tube structure of the present invention. FIG. 3 is a longitudinal sectional view of the steel reinforced steel column and column form of the complex curved surface giant concrete beam tube structure of the present invention. FIG. 4 is a longitudinal sectional view of the roof framework and roof formwork of the complex curved surface giant concrete beam tube structure of the present invention. FIG. 5 is a longitudinal sectional view of a notch at the bottom of the complex curved surface giant concrete beam tube structure of the present invention. FIG. 6 is a schematic view of the roof with a complicated curved surface and a huge concrete beam tube structure according to the present invention. Referring to fig. 1 to 6, the construction method of a giant concrete beam tube structure with a complex curved surface of the present invention includes the following construction steps:
constructing an annular bearing platform 60 at the position to be constructed;
providing a plurality of stiff steel skeleton columns 10 matched with the curved surface of the concrete beam tube structure to be formed, uniformly distributing the stiff steel skeleton columns 10 on a bearing platform 60, and installing the stiff steel skeleton columns 10 in pairwise symmetry;
erecting a column formwork 40 correspondingly positioned at the inner side of the stiff steel column 10 on the bearing platform 60;
a column inner mold is erected on the column mold frame 40, the curvature of the column inner mold is matched with the curvature of a concrete beam tube structure to be formed, and the column inner mold is correspondingly arranged on the inner side of the stiff steel rib column 10;
fig. 7 is a schematic diagram of the arrangement of the vibrating rods of the complex curved surface giant concrete bundle cylinder structure of the invention. FIG. 8 is a partial cross-sectional view of the construction of the vibrating rod of the complex curved surface giant concrete beam tube structure of the present invention. FIG. 9 is a schematic view of the connection structure of the vibrating rod and the guide rope of the complex curved surface giant concrete beam tube structure of the present invention. As shown in connection with figures 7 to 9,
binding column steel bars in the stiff steel reinforced column 10 to form a steel bar mesh 11, penetrating a guide rope 12 in the steel bar mesh 11, arranging a vibrating rod 121 on the guide rope 12 in a sliding manner, and placing the vibrating rod 121 at the bottom of the stiff steel reinforced column 11;
paving a column external mold and a column side mold outside the stiff steel rib column 10 and the steel mesh, and enclosing the corresponding stiff steel rib column 10 by utilizing the column external mold, the column side mold and the column internal mold to form a column space to be poured;
pouring concrete in the column space to be poured to form a concrete rigid column, vibrating the poured concrete by the vibrating rod 121 and pulling the vibrating rod 121 upwards in the concrete pouring process, so that the vibrating rod 121 moves from the bottom to the top of the poured concrete along the guide rope, and drawing out the vibrating rod 121 along the guide rope 12 after the concrete pouring is finished; and
and constructing a roof structure on the plurality of concrete rigid columns, and connecting the plurality of concrete rigid columns together through the roof structure.
Further, a construction roof structure includes:
providing a roof framework 20 matched with the curved surface of the roof structure to be formed, and covering and connecting the roof framework 20 to the tops of the plurality of stiff steel rib columns 10;
erecting a roof formwork 50 in a space surrounded by the stiff steel rib columns 10 on the bearing platform 60;
erecting a roof bottom die on the roof die frame 50, wherein the curvature of the roof bottom die is adapted to the curvature of a roof structure to be formed;
laying a roof top die and a roof side die on the outer side of the roof framework 20, and enclosing the corresponding roof framework 20 by using the roof top die, the roof side die and the roof bottom die to form a roof space to be poured;
and symmetrically pouring concrete in the roof space to be poured in a segmented mode to form a roof structure.
As a preferred embodiment of the construction method of the complicated curved surface giant concrete bundle tube structure of the present invention, as shown in fig. 7 to 9, the vibrating rod 121 is lifted up synchronously with the top surface of the concrete, when the concrete is poured, the grouting pipe is introduced into the bottom of the steel bar mesh 11, so that the concrete gradually fills the space enclosed in the column formwork from bottom to top, and when the concrete is poured, the vibrating rod 121 is moved upward, so that the vibrating rod 121 moves upward along with the height of the concrete pouring, thereby avoiding pulling out the vibrating rod 121 after the pouring is completed, and reducing the gap in the concrete.
Preferably, a plurality of vibrating rods 121 may be provided in the mesh reinforcement 11 according to the drawing of the profiled concrete element 13 to be formed, so as to meet the vibrating requirements.
As a preferred embodiment of the construction method of the complicated curved surface giant concrete beam tube structure of the present invention, with reference to fig. 7 to 9, when installing the guide rope 12, the method further includes:
providing a fixing member 111, fixedly installing the fixing member 111 at a position marked with a mark at the bottom of the steel mesh 11, fixedly connecting one end of the guide rope 12 to the fixing member 111, and correspondingly connecting the other end of the guide rope 12 to the top of the steel mesh 11, so that the guide rope 12 is arranged along the mark.
Preferably, a support for supporting and fixing the reinforcing mesh 11 and the formwork is built on the construction site, and the end of the guide rope 12 far away from the fixing member 111 can be fixed at the corresponding position of the support for the subsequent extraction of the vibrating rod 121.
Specifically, the fixing member 111 is a hook, one end of the hook is bound and fixed to the mesh reinforcement 11, and the other end of the hook hooks the guide rope 12.
Further, when the vibrating rod 121 is installed on the guide rope 12, the vibrating rod further includes:
an annular member is mounted on a side portion of the vibrating rod 121 and is sleeved on the guide rope 12, so that the vibrating rod 121 can move up and down along the guide rope 12.
Specifically, the annular members are disposed along the length direction of the vibrating rod 121 at intervals, and the annular members are disposed on the same side of the vibrating rod 121.
Preferably, the annular member is a nut that is secured to the vibrating rod 121 by a tie.
Preferably, before the concrete is poured, the method further comprises:
and erecting a formwork, and arranging exhaust holes at intervals on the top of the formwork so that air in the concrete can be exhausted from the exhaust holes.
Further, when concreting, still include:
the utility model provides a vibrator, utilizes vibrator vibration, also can strike the template in addition the manual work to supplementary vibration is carried out to the concrete of pouring, makes the concrete that is close to the template position also receive the vibration and closely knit.
As a preferred embodiment of the construction method of the complicated curved surface giant concrete beam tube structure of the present invention, the installation of the stiff steel reinforced column 10 includes:
dividing the stiff steel rib column into a plurality of steel rib column sections;
positioning and fixing a steel rib column section 10 on a bearing platform 60; and
the steel rib column sections of the corresponding layers are sequentially installed layer by layer from bottom to top until the plurality of steel rib column sections are assembled and connected to form the stiff steel rib column 70.
As a better implementation mode of the construction method of the complicated curved surface giant concrete bundle tube structure, cement paste is poured to form a joint for connecting two times of concrete pouring before the next concrete pouring.
As a preferred embodiment of the construction method of the complicated curved surface giant concrete bundle tube structure of the present invention, the method further comprises the step of laying a through-type condensation cooling pipe inside the concrete to reduce the temperature inside the concrete during the concrete pouring process.
Preferably, the zigzag roof is measured and paid off by adopting a three-dimensional positioning technology, rechecked through a plane coordinate and a height difference, and after the bottom die is installed, the zigzag roof is contrasted and analyzed with an original roof model by utilizing a three-dimensional scanning technology, and finally the error is controlled within 2 mm.
Preferably, the casting platform 60 comprises: and a bearing platform is poured at the lower part of the beam tube structure, has the length of 8500mm, the width of 1600mm and the height of 3890mm, and belongs to an overlong, overlong and large-volume concrete bearing platform. Preferably, in the pouring process of the concrete bearing platform, sectional pouring is adopted, the height of the foundation layer is poured firstly, and then the designed elevation is poured. Preferably, in order to prevent later cracking, 6C 14 steel mesh sheets are added in the concrete bearing platform, 16# channel steel is arranged at intervals of 50cm from top to bottom, and a triangular brace is integrally used as an inclined top.
Further, the present invention also includes: a wedge-shaped notch 71 is reserved on the side formwork and serves as a concrete feeding port, and pouring construction is facilitated.
According to the invention, the steel rib column sections are spliced and connected to form the stiff steel rib column 10, and the stiff steel rib column is stacked in a layered manner at high altitude in sections, so that the problems that the inclination angle of the stiff steel rib column in the beam tube structure in the prior art is large, and the stiff steel rib column is unfavorable for the quality and the construction period of a floor slab if fixed and installed by adopting a conventional temporary support increasing method can be solved.
In this embodiment, the steel rib column section is of a herringbone structure, the steel rib column section is completely hoisted in a two-point hoisting mode through a tower crane, two connecting plates are added in the thickness direction of the flange plate for fixed installation, a cable wind rope is pulled for correction and fixation during installation, and after lower-layer concrete is poured, the steel rib column section on the upper layer is sequentially installed, so that the stability of the finally assembled stiff steel rib column 10 is ensured.
Further, the assembling and connecting of a plurality of steel rib column sections comprises: and welding two adjacent steel rib column sections by adopting a symmetrical synchronous welding process, preheating a welding area before welding, preserving heat after welding, adding an arc extinguishing plate and an arc striking plate on a welding line, and monitoring the welding environment and the welding quality in real time by using an infrared thermometer, a temperature hygrometer and a welding line detection ruler.
Further, the erection column mold frame 40 includes:
providing a plurality of support rods 41 and adjustable support struts 42, supporting the support rods 41 on a bearing platform 60, and supporting the column template at the top through the adjustable support struts 42; and
a cross brace 43 and a safety net are provided to tie the cross brace 43 to a plurality of braces in the same row to enhance the connection and stability of the plurality of braces. And connecting the safety net with a plurality of support rods positioned in the same row for protection.
The column formwork 40 is a full support which is erected layer by layer upwards according to the height of each layer of structure of the core-tube wall of the on-site beam-tube structure, so that the stability of the structure is enhanced, and large deformation and template overturning caused by uneven load during pouring are prevented.
Further, the erection of the roof mold frame 50 includes:
providing a plurality of support rods 51 and adjustable support rods, wherein the support rods 51 are supported on a bearing platform 60, and the top of the support rods supports the roof template through the adjustable support rods; and
a cross brace 52 and a safety net are provided to tie the cross brace 52 to a plurality of braces in the same row to enhance the connection and stability of the plurality of braces. And connecting the safety net with a plurality of support rods positioned in the same row for protection.
In this embodiment, according to the characteristics of a zigzag roof, in order to ensure the integral forming of roof formwork, all bottom formworks are erected at one time, the roof formwork system is divided into two parts, namely a tower body region external frame and a zigzag roof region internal frame, and the tower body region external frame directly erects a floor type scaffold upwards from 8 floors.
More preferably, the inner frame adopts a section steel overhanging scaffold, 16# I-steel is used as a foundation, and the anchoring section is anchored on 9 floors. And the joint of the anchoring section and the floor slab is connected and fixed by adopting a direct 18mm bolt. And each section of overhanging I-steel end is provided with a pull ring with the diameter of 16mm, and the overhanging I-steel end is firmly tied with the pre-buried pull ring of the concrete structure by adopting a safety steel wire rope.
Further, the method also comprises the step of providing a steel reinforcement framework before pouring concrete, and guiding to bind the steel reinforcement framework through BIM modeling. Specifically, at the complex node of the inner steel rib column, the cross-sectional dimension at the node is analyzed through BIM modeling, longitudinal main reinforcements are reasonably arranged, and the reinforcement perforation elevation is reserved, so that the precision of the reinforcement perforation of the inner steel rib column is ensured.
Further, pouring the concrete multiple times comprises: before the next concrete pouring, cement paste is poured firstly to form a joint for connecting the two concrete pouring successively, so that the quality of the joint is ensured.
Preferably, each time in the concrete pouring process is not more than 4 meters, taking the first-layer bundle tube structure as an example, the height of the first-layer bundle tube structure is 6 meters, pouring is carried out twice, the first-time pouring height is 3 meters, and pouring is carried out for the second time until the first-layer floor slab is flat.
According to the characteristics of the fold-line-shaped roof, in order to ensure the stress balance of the formwork, the fold-line-shaped roof is constructed by symmetrically pouring concrete in sections.
Furthermore, the method also comprises the step of reserving the sinking deformation amount when the construction site is paid off by a measuring network control method. Specifically, in the process of pouring concrete by using the beam tube structure, professional measuring personnel are arranged to observe the sinking of the top end of the batter post and the deformation of the template in real time, and the sinking deformation is reserved during measurement and paying-off control, so that the beam tube structure is ensured to meet the design requirements during forming.
As a better implementation mode of the construction method of the complex curved surface giant concrete bundle tube structure, the invention also comprises the step of laying the through type condensation cooling pipe in the concrete to reduce the temperature in the concrete, so that the overlarge surface temperature difference can be prevented when the large-volume bundle tube structure is constructed.
Preferably, the roof has no operation surface, so that the reinforcing steel bars cannot be adjusted on the operation surface, and the reinforcing steel bars need to be bent in advance.
The column template and the roof template adopt wood plywood with the thickness of 18mm as panels, and 50mm multiplied by 100mm wood purlin keels are arranged every 200 mm.
Preferably, in order to resist the lateral pressure of the beam tube structure concrete, a double steel pipe hoop is adopted, and a bidirectional M14 counter-pulling screw rod is added.
And further, before the concrete is finally set, hanging geotextile on the column template and the roof template, then carrying out watering maintenance, removing the column template and the roof template when the strength of the concrete reaches the designed strength, coating a maintenance liquid on the surface of the concrete, and adopting a film for covering and maintaining, wherein the maintenance time is at least 14 h.
The construction method of the complicated curved surface giant concrete beam tube structure has the beneficial effects that:
according to the invention, the guide rope is arranged in the reinforcing mesh, the vibrating rod is slidably arranged on the guide rope, the vibrating rod is pulled upwards in the concrete pouring process, and moves from the bottom to the top of the poured concrete along the guide rope, so that the concrete is vibrated along a pre-designed vibrating path, and the problems that in the prior art, the vibrating rod is vibrated by a quick-inserting and slow-pulling inserting vibrating method, but the arrangement of reinforcing steel bars at column nodes is dense, the vibrating rod cannot penetrate through the dense reinforcing mesh, and local vibration leakage is possibly caused are solved, and in addition, the vibrating rod easily collides with the reinforcing mesh when pulled out, and influences the strength of a member. The concrete is difficult to vibrate and construct.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A construction method of a complicated curved surface giant concrete bundle cylinder structure is characterized by comprising the following construction steps: constructing an annular bearing platform at a position to be constructed; providing a plurality of stiff steel rib columns matched with the curved surface of the concrete beam tube structure to be formed, uniformly distributing the stiff steel rib columns on the bearing platform, and symmetrically installing the stiff steel rib columns in pairs; erecting a column formwork on the bearing platform and correspondingly positioned on the inner side of the stiff steel rib column; a column inner mold is erected on the column mold frame, the curvature of the column inner mold is matched with the curvature of the concrete beam tube structure to be formed, and the column inner mold is correspondingly arranged on the inner side of the stiff steel rib column; binding column steel bars in the stiff steel rib column to form a steel bar mesh, penetrating a guide rope into the steel bar mesh, arranging a vibrating rod on the guide rope in a sliding manner, and placing the vibrating rod at the bottom of the stiff steel rib column; paving a column external mold and a column side mold outside the stiff steel rib column and the steel mesh, and enclosing the corresponding stiff steel rib column by using the column external mold, the column side mold and the column internal mold to form a column space to be poured; pouring concrete in the column space to be poured to form a concrete rigid column, vibrating the poured concrete by the vibrating rod in the concrete pouring process and pulling the vibrating rod upwards so that the vibrating rod moves from the bottom to the top of the poured concrete along the guide rope, and drawing out the vibrating rod along the guide rope after the concrete pouring is finished; and constructing a roof structure on the plurality of concrete rigid columns, and connecting the plurality of concrete rigid columns together through the roof structure.
2. The method of constructing a complex curved giant concrete beam tube structure as defined in claim 1, wherein said vibrator rod is raised in synchronism with the top surface of said concrete.
3. The method of constructing a complex curved surface giant concrete beam tube structure as claimed in claim 1, wherein when installing the guide rope, further comprising: and providing a fixing piece, fixedly installing the fixing piece at the bottom of the steel bar mesh, fixedly connecting one end of the guide rope to the fixing piece, and correspondingly connecting the other end of the guide rope to the top of the steel bar mesh.
4. The method of constructing a large concrete beam structure with complex curved surfaces according to claim 3, wherein the fixing member is a hook, one end of the hook is bound and fixed to the reinforcing mesh, and the other end of the hook hooks the guide rope.
5. The method of constructing a complex curved surface giant concrete beam tube structure as claimed in claim 1, wherein when installing said vibrating rod on said guide rope, further comprising: and installing an annular piece at the side part of the vibrating rod, and sleeving the annular piece on the guide rope so that the vibrating rod can move up and down along the guide rope.
6. A method of constructing a complex curved giant concrete beam tube structure as claimed in claim 5, wherein said annular members are spaced apart along the length of said vibrator, and are disposed on the same side of said vibrator.
7. The method of constructing a complex curved surface giant concrete beam tube structure as claimed in claim 5, wherein said annular member is a nut, and said nut is bound and fixed to said vibrating rod by a binding band.
8. The construction method of the complicated curved surface giant concrete beam tube structure as claimed in claim 1, wherein the installing of the stiff steel skeleton column comprises: dividing the stiff steel rib column into a plurality of steel rib column sections; positioning and fixing the steel rib column section on the bearing platform; and sequentially installing the steel rib column sections of the corresponding layers layer by layer from bottom to top until the plurality of steel rib column sections are spliced and connected to form the stiff steel rib column.
9. The method of constructing a complex curved giant concrete beam tube structure of claim 1, wherein a cement slurry is poured to form a joint for connecting two successive concretes before the next concrete pouring.
10. The method for constructing a complicated curved surface giant concrete beam tube structure according to claim 1, wherein the concrete pouring process further comprises the step of laying a through-type condensation cooling pipe inside the concrete to reduce the temperature inside the concrete.
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| CN112431356A (en) * | 2020-11-27 | 2021-03-02 | 中国十七冶集团有限公司 | Large-slope inclined column concrete vibrating auxiliary method |
| CN114961261A (en) * | 2022-05-13 | 2022-08-30 | 中国十七冶集团有限公司 | Batter post concrete placement appurtenance that vibrates |
| CN115492310B (en) * | 2022-10-31 | 2023-07-11 | 中国十九冶集团有限公司 | Reinforcement cage expansion device and construction method for installing box-type steel column in reinforcement cage |
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| US6681538B1 (en) * | 2002-07-22 | 2004-01-27 | Skidmore, Owings & Merrill Llp | Seismic structural device |
| CN202324651U (en) * | 2011-11-25 | 2012-07-11 | 北京市第三建筑工程有限公司 | Vibrating construction guiding device for concrete inclined member |
| CN203175051U (en) * | 2013-04-15 | 2013-09-04 | 中建八局第二建设有限公司 | Guide type vibrating rod |
| CN203879013U (en) * | 2014-03-27 | 2014-10-15 | 中国建筑第八工程局有限公司 | Vibrating rod guiding track |
| CN105625186B (en) * | 2015-12-31 | 2017-07-04 | 浙江舜杰建筑集团股份有限公司 | A kind of heavy in section concrete Y shape pillar construction method |
| CN106088478B (en) * | 2016-08-23 | 2019-08-09 | 中建八局第二建设有限公司 | Tilt strength steel concrete cylinder construction method |
| CN106245770B (en) * | 2016-08-31 | 2018-09-04 | 中国建筑第八工程局有限公司 | Expanded letter variable cross-section annular stiffness beam construction method |
| CN106677069B (en) * | 2016-12-28 | 2018-04-06 | 杭州江润科技有限公司 | A kind of construction method of bridge pier integral formwork support one-shot forming structure |
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