Frame type variable cross-section wind tower construction structure and method
Technical Field
The invention relates to the field of wind tower construction, in particular to a frame type variable cross-section wind tower construction structure and method.
Background
The frame type variable cross-section wind tower is generally constructed by combining a fastener, a bowl buckle full framing with a steel pipe supporting method in a cast-in-place mode, and due to the fact that the market irregularities and acceptance difficulties of the fastener framing and the bowl buckle framing are large, particularly the fastener framing causes a plurality of framing accidents and is gradually replaced. Because the variable cross-section wind tower is inclined, the construction cannot be performed by adopting a general template system, and particularly, when the size of the variable cross-section wind tower is changed, a separate support system and a template system are required to be arranged.
In order to solve the problems, the construction method for the frame type variable-section wind tower, which is convenient to set up and dismantle and reasonable in stress, can meet the requirements of high formwork construction safety and structural quality of beams and plate structures, can well solve the problem of stable overall structure in the cast-in-situ construction process of the wind tower, and can also reduce the construction cost of the frame type variable-section wind tower, is needed to be invented.
Disclosure of Invention
The invention mainly aims to provide a frame type variable cross-section wind tower construction structure and method, which solve the defects in the background technology, improve the construction efficiency of cast-in-situ construction of the wind tower, increase the versatility of a support for the construction of the variable cross-section cast-in-situ construction or the heightened structure, and reduce the input consumption of construction measure materials.
In order to solve the technical problems, the invention adopts the technical scheme that the frame type variable cross-section wind tower construction structure comprises a raft foundation, a wind tower bottom plate structure, a wind tower frame beam structure, a wind tower overhanging platform and a roof board structure, wherein the construction structure comprises:
The outer scaffold structure is erected along the outer part of the raft foundation and is used for providing external support for wind tower construction, and the outer scaffold structure is formed by splicing and combining a plurality of scaffold units and can be erected upwards along with the construction height of the wind tower;
the wind tower bottom plate support structure is erected on the raft foundation and is used for providing construction support for the wind tower bottom plate structure;
The combined platform is erected on the wind tower bottom plate structure and is used for providing internal support for wind tower construction;
The frame beam support frame structure is erected on the combined platform and is used for construction support of the wind tower frame beam structures with different heights, and the frame beam support frame structure is formed by splicing and combining a plurality of frame beam support frame units and can be erected upwards along with the construction height of the wind tower frame beam structure;
the ring beam supporting structure is erected on the frame beam supporting frame and the outer scaffold structure and is used for construction support of the wind tower overhanging platform;
the roof board supporting structure is erected on the wind tower overhanging platform and is used for supporting the construction of the roof board structure;
The wind tower bottom plate support structure, the frame beam support frame, the ring beam support structure and the roof board support structure are all connected with the outer scaffold structure through fastener steel pipes.
In the preferred scheme, construction platform has been set up at the top of outer scaffold structure, is provided with the protection railing on the construction platform.
In the preferred scheme, wind tower bottom plate supporting structure is including setting up bottom plate dish knot support frame and bottom plate frame roof beam support frame on raft foundation to and lay the pouring template at bottom plate dish knot support frame and bottom plate frame roof beam support frame top, be connected through the fastener steel pipe between bottom plate dish knot support frame, bottom plate frame roof beam support frame and the outer scaffold structure.
In the preferred scheme, the combined platform comprises a plurality of platform main beams distributed on the wind tower bottom plate structure, a plurality of platform secondary beams transversely erected on the wind tower bottom plate structure and a platform panel arranged on the platform secondary beams.
In the preferred scheme, frame beam support frame unit includes frame beam dish knot support frame, sets up the frame beam support frame in the frame beam dish knot support frame outside to and lay the frame beam pouring template on frame beam dish knot support frame and frame beam support frame top, wherein, the frame beam support frame unit of bottommost erects on combination platform, is connected through the fastener steel pipe between frame beam dish knot support frame, frame beam support frame and the outer scaffold structure.
In the preferred scheme, circle roof beam bearing structure includes that the annular erects a plurality of circle roof beam support platform between frame roof beam support frame structure and outer scaffold structure, erects the support frame of encorbelmenting on circle roof beam support platform to and lay the platform of encorbelmenting on support frame and frame roof beam support frame structure top of encorbelmenting and pour the template, wherein, circle roof beam support platform includes that a plurality of erects the support girder between frame roof beam support frame structure and outer scaffold structure, and erects the support panel on the support girder.
In the preferred scheme, roof boarding bearing structure includes erects the interlaminar platform on the wind tower overhanging platform, erects roof dish knot support frame and eave support frame on the interlaminar platform to and lay the roofing pouring template on roof dish knot support frame and eave support frame, roof dish knot support frame, eave support frame and outer scaffold structure are connected through the fastener steel pipe between.
In the preferred scheme, the interlayer platform comprises an interlayer main beam erected on the wind tower overhanging platform, an interlayer secondary beam erected on the interlayer main beam and an interlayer panel erected on the interlayer secondary beam.
In the preferred scheme, the bottom of platform panel and platform secondary beam all arrays sets up the cassette, all is equipped with corresponding jack on platform girder, the platform secondary beam and the cassette, has pegged graft in the jack and has locking bolt, and locking nut is installed to locking bolt's external screw thread, still is provided with the positioning seat on platform girder and the platform secondary beam, and the positioning seat is located two ends of jack.
The method comprises the following steps:
s1, constructing a raft foundation, leveling a site, constructing a wind tower raft foundation, and pouring support cushion layer concrete;
s2, constructing a wind tower bottom plate structure, erecting an outer scaffold structure and a wind tower bottom plate support structure on the basis of cushion concrete and raft plates, connecting the outer scaffold structure and the wind tower bottom plate support structure through fastener steel pipes, binding steel bars of a bottom frame column, a bottom frame beam and a bottom plate and installing a template according to the design, and pouring concrete;
s3, erecting a combined platform, and hoisting the combined platform when the strength of the concrete of the wind tower bottom plate structure meets the design requirement;
S4, constructing a first layer of wind tower frame beam structure, erecting a frame beam support frame structure on the combined platform, installing the frame beam support frame structure and an outer scaffold structure in the wind tower to the first layer of frame beam position, connecting the frame beam support frame structure and the outer scaffold structure through fastener steel pipes, binding steel bars of the frame beam and the frame column, installing a template, and pouring concrete after construction is completed;
s5, constructing a multi-layer wind tower frame beam structure, constructing according to the same steps as the first layer wind tower frame beam structure in the step S4 until the top wind tower frame beam structure is poured, performing masonry construction of autoclaved aerated concrete blocks on the tower wall after the frame system is finished, and adjusting the installation interval of the wind tower frame beam structure according to the inward inclination characteristic of the wind tower during construction;
S6, constructing an air tower overhanging platform, assembling a ring beam support platform, erecting the ring beam support platform on a top air tower frame beam structure, placing an overhanging support frame of the air tower overhanging platform on the ring beam support platform, then continuously erecting an inner frame beam support frame structure and an outer scaffold structure of the air tower, connecting the inner frame beam support frame structure and the outer scaffold structure through fastener steel pipes, and pouring concrete after steel bar binding and template installation of the overhanging platform are completed;
S7, constructing a roof slab structure, dismantling an inner frame beam support frame structure below the wind tower overhanging platform, installing an inner stair, erecting an interlayer platform on the wind tower overhanging platform, erecting a roof disc buckle support frame and an eave support frame, continuously heightening an outer scaffold structure, connecting the roof disc buckle support frame, the eave support frame and the outer scaffold structure through fastener steel pipes, and pouring roof slab structure concrete after finishing the procedures of binding steel bars and installing templates;
S8, after the construction is completed, the roof board template and the support structure are removed after the wind tower concrete meets the design requirement, other auxiliary projects are constructed, the outer scaffold structure is removed after the auxiliary projects are completed, the site is restored, and the wind tower construction is completed.
The invention provides a frame type variable cross-section wind tower construction structure and a method, which have the following beneficial effects:
1. The combined construction of the inner support system and the outer support system is suitable for the construction of different types of frame type variable cross-section wind towers, and the plane arrangement and the step pitch of the support are adjusted according to the structural characteristics of the wind towers.
2. Through adopting the dish to detain the support and as the main braced system of wind tower construction, the atress is clear and definite, simple structure, after the installation of support system is accomplished, adopts the fastener formula support to link together support frame, scaffold frame simultaneously, fixes whole support body, guarantees the overall stability in the work progress.
3. The material acquisition channel is wide, the construction cost is low, meanwhile, the operation area of the wind tower is small, the rapid assembly and disassembly of the bracket can be realized, the construction progress is accelerated, the combined type assembly and disassembly of the platform system can be realized, and the obvious effect can be generated for improving the working efficiency of the cast-in-situ construction of the wind tower.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a construction structure diagram of a wind tower bottom plate structure of the present invention;
FIG. 2 is a block diagram of a combination platform of the present invention;
FIG. 3 is a construction structure diagram of a frame beam structure of the wind tower of the present invention;
FIG. 4 is a construction structure diagram of the wind tower overhanging platform of the invention;
FIG. 5 is a block diagram of a ring beam support platform of the present invention;
FIG. 6 is a construction block diagram of a roof panel structure of the present invention;
FIG. 7 is a block diagram of an interlayer platform according to the present invention;
FIG. 8 is a block diagram of the modular platform installation of the present invention;
FIG. 9 is a diagram of the present invention 8, a structural cross section;
In the figure, a 1 raft foundation, a 2-wind tower bottom plate structure, a 201 bottom plate buckle support frame, a 202 bottom plate frame beam support frame, a 203 pouring template, a 4-layer scaffold structure, a 5 construction platform, a 6 protection railing, a 7 fastener steel pipe, an 8 combined platform, an 801 platform girder, an 802 platform secondary beam, an 803 platform panel, a 810 clamping seat, 811 jacks, 812 locking bolts, 813 locking nuts, 814 positioning seats, a 9-wind tower frame beam structure, a 901 frame beam buckle support frame, a 902 frame beam support frame, a 903 frame beam pouring template, a 12-circle beam support platform, a 1201 support girder, a 1202 support panel, a 13-wind tower overhanging platform, a 1301 overhanging support frame, a 1304 overhanging platform pouring template, a 14-layer platform, a 1401-layer girder, a 1402-layer secondary beam, a 1403-layer panel, a 15-roof plate structure, a 1501 roof buckle support frame, a 1502 eave support frame and a 1503-roof pouring template.
Detailed Description
Example 1
As shown in fig. 1 to 7, the frame type variable cross-section wind tower construction structure comprises a raft foundation 1, a wind tower bottom plate structure 2, a wind tower frame beam structure 9, a wind tower overhanging platform 13 and a roof board structure 15, and the construction structure comprises:
The outer scaffold structure 4 is erected along the outer part of the raft foundation 1 and is used for providing external support for wind tower construction, and the outer scaffold structure 4 is formed by splicing and combining a plurality of scaffold units and can be erected upwards along with the construction height of the wind tower;
The wind tower bottom plate support structure is erected on the raft foundation 1 and is used for providing construction support for the wind tower bottom plate structure 2;
the combined platform 8 is erected on the wind tower bottom plate structure 2 and is used for providing internal support for wind tower construction;
The frame beam support frame structure is erected on the combined platform 8 and is used for construction support of the wind tower frame beam structures 9 with different heights, and the frame beam support frame structure is formed by splicing and combining a plurality of frame beam support frame units and can be erected upwards along with the construction height of the wind tower frame beam structures 9;
The ring beam supporting structure is erected on the frame beam supporting frame and the outer scaffold structure 4 and is used for construction support of the wind tower overhanging platform 13;
the roof board support structure is erected on the wind tower overhanging platform 13 and is used for construction support of the roof board structure 15;
the wind tower bottom plate support structure, the frame beam support frame, the ring beam support structure and the roof board support structure are all connected with the outer scaffold structure 4 through fastener steel pipes 7.
During construction, through the cooperation between outer scaffold structure 4 and the frame beam support frame structure, the inside and outside support system has been formed, ensure the stability of construction, the frame beam support frame structure by a plurality of frame beam support frame unit combination simultaneously, the frame type variable cross section wind tower construction of applicable different grade type, be convenient for support according to the characteristics of variable cross section wind tower sloping wall, the planar arrangement of adjustment support, step, utilize fastener steel pipe 7 to link up outer scaffold structure 4 and frame beam support frame structure simultaneously, the stability of support has been ensured.
In the preferred scheme, construction platform 5 has been set up at the top of outer scaffold structure 4, be provided with on the construction platform 5 and protect railing 6 for make things convenient for constructor to construct, protect railing 6 effective assurance construction safety, what needs to be explained is, when need erect outer scaffold structure 4 upwards, is from tearing down construction platform 5 earlier, and outer scaffold structure 4 erects the back, is erect it on outer scaffold structure 4, ensures along with the upwards erection of outer scaffold structure 4, and construction platform 5 erects at the top of outer scaffold structure 4 all the time.
In the preferred scheme, wind tower bottom plate support structure includes that erect bottom plate dish on raft foundation 1 detains support frame 201 and bottom plate frame roof beam support frame 202 to and lay the pouring template 203 at bottom plate dish knot support frame 201 and bottom plate frame roof beam support frame 202 top, is connected through fastener steel pipe 7 between bottom plate dish knot support frame 201, bottom plate frame roof beam support frame 202 and the outer scaffold structure 4.
In a preferred embodiment, the combined platform 8 includes a plurality of platform main beams 801 distributed on the wind tower bottom plate structure 2, a plurality of platform secondary beams 802 transversely erected on the wind tower bottom plate structure 2, and platform panels 803 disposed on the platform secondary beams 802, in this embodiment, the number of the platform main beams 801 is five, and the number of the platform secondary beams 802 is eleven, so as to ensure stability of the platform panels 803.
In the preferred scheme, frame beam support frame unit includes frame beam dish knot support frame 901, sets up frame beam support frame 902 in the frame beam dish knot support frame 901 outside to and lay the frame beam pouring template 903 on frame beam dish knot support frame 901 and frame beam support frame 902 top, wherein, the frame beam support frame unit of bottommost erects on combination platform 8, is connected through fastener steel pipe 7 between frame beam dish knot support frame 901, frame beam support frame 902 and the outer scaffold structure 4.
When the frame beam plate buckle support 901 is erected upwards, the center point of the wind tower bottom plate structure 2 is erected upwards, and the frame beam support 902 is inclined inwards along with the variable cross-section wind tower, so that the distance between the frame beam plate buckle support 901 is adjusted.
In a preferred solution, the ring beam supporting structure includes a plurality of ring beam support platforms 12 that are annularly erected between the frame beam supporting frame structure and the outer scaffold structure 4, an overhanging supporting frame 1301 that is erected on the ring beam support platforms 12, and an overhanging platform pouring template 1304 that is laid on the overhanging supporting frame 1301 and the top end of the frame beam supporting frame structure, where the ring beam support platforms 12 include a plurality of support girders 1201 that are erected between the frame beam supporting frame structure and the outer scaffold structure 4, and support panels 1202 that are erected on the support girders 1201, in this embodiment, the number of ring beam support platforms 12 is six, and the center of the wind tower is arranged in the center of the circle.
When the wind tower overhanging platform 13 is constructed, the frame beam plate buckle support frame 901 needs to be erected to the height of the wind tower overhanging platform 13, and at this time, the frame beam support frame 902 does not need to be erected.
In a preferred scheme, the roof board supporting structure comprises an interlayer platform 14 erected on an overhanging platform 13 of the wind tower, a roof plate buckle supporting frame 1501 and an eave supporting frame 1502 erected on the interlayer platform 14, and a roof pouring template 1503 paved on the roof plate buckle supporting frame 1501 and the eave supporting frame 1502, wherein the roof plate buckle supporting frame 1501, the eave supporting frame 1502 and the outer scaffold structure 4 are connected through fastener steel pipes 7.
In a preferred embodiment, the interlayer platform 14 includes an interlayer main beam 1401 erected on the wind tower overhanging platform 13, an interlayer secondary beam 1402 erected on the interlayer main beam 1401, and an interlayer panel 1403 erected on the interlayer secondary beam 1402, in this embodiment, the interlayer main beam 1401 is in a five-pointed star shape formed by welding i-beams, the interlayer secondary beam 1402 is formed by concentrically welding a plurality of i-beam ends in a circular arrangement, and the interlayer main beam 1401, the interlayer secondary beam 1402 and the interlayer panel 1403 are fixed by welding.
Example 2
Further described in connection with example 1, as shown in the structure of FIGS. 1-7, a method of constructing a framed variable cross-section wind tower, the method comprising:
s1, constructing a raft foundation 1, leveling a site, constructing a wind tower raft foundation 1, and pouring support cushion layer concrete;
S2, constructing a wind tower bottom plate structure 2, erecting an outer scaffold structure 4, a bottom plate disc buckle support frame 201 and a bottom plate frame beam support frame 202 on a cushion concrete and raft foundation 1, connecting the outer scaffold structure 4, the bottom plate disc buckle support frame 201 and the bottom plate frame beam support frame 202 through fastener steel pipes 7, binding steel bars of a bottom frame column, a bottom frame beam and a bottom plate according to design, installing a pouring template 203, and pouring concrete;
s3, erecting a combined platform 8, completing the assembly of a main platform beam 801, a secondary platform beam 802 and a platform panel 803, and hoisting the combined platform 8 when the concrete strength of the wind tower bottom plate structure 2 meets the design requirement;
S4, constructing a first layer of wind tower frame beam structure 9, erecting a frame beam support frame structure on the combined platform 8, erecting a frame beam plate buckle support frame 901, a frame beam support frame 902 and a frame beam pouring template 903, installing the frame beam support frame structure in the wind tower and an outer layer scaffold structure 4 at the position of the first layer of frame beam, connecting the frame beam plate buckle support frame 901, the frame beam support frame 902 and the outer layer scaffold structure 4 through fastener steel pipes 7, then binding steel bars of the frame beam and the frame column, installing the template, and pouring concrete after construction is completed;
S5, constructing a multi-layer wind tower frame beam structure 9, constructing according to the same steps as the first layer wind tower frame beam structure 9 in the step S4 until the top wind tower frame beam structure 9 is poured, performing masonry construction of autoclaved aerated concrete blocks on the tower wall after the frame system is finished, and adjusting the distance between frame beam support frames 902 according to the inward inclination characteristic of the wind tower during construction;
S6, constructing a wind tower overhanging platform 13, assembling a ring beam support platform 12, erecting the ring beam support platform 12 on a top wind tower frame beam structure 9, placing an overhanging support 1301 of the wind tower overhanging platform 13 on the ring beam support platform 12, then continuously erecting a frame beam plate buckle support 901 of the wind tower inner frame beam support structure and an outer layer scaffold structure 4, connecting through a fastener steel pipe 7, and pouring concrete after steel bar binding and template installation of the overhanging platform are completed;
S7, constructing a roof plate structure 15, dismantling an inner frame beam support frame structure below the wind tower overhanging platform 13, installing an inner stair, erecting an interlayer platform 14 on the wind tower overhanging platform 13, erecting a roof plate buckle support frame 1501 and an eave support frame 1502, continuously heightening an outer scaffold structure 4, connecting the roof plate buckle support frame 1501, the eave support frame 1502 and the outer scaffold structure 4 through fastener steel pipes 7, and pouring concrete of the roof plate structure 15 after the procedures of binding steel bars and installing templates are completed;
S8, after the construction is completed, the roof board template and the support structure are removed after the wind tower concrete meets the design requirement, other auxiliary projects are constructed, the outer scaffold structure 4 is removed after the auxiliary projects are completed, the site is restored, and the wind tower construction is completed.
Example 3
In combination with the embodiment 1, as shown in fig. 8-9, a detachable structure is adopted between the platform panel 803, the platform secondary beam 802 and the platform main beam 801, specifically, a clamping seat 810 is arranged at the bottom of each of the platform panel 803 and the platform secondary beam 802 in an array manner, corresponding insertion holes 811 are formed in each of the platform main beam 801, the platform secondary beam 802 and the clamping seat 810, locking bolts 812 are inserted into the insertion holes 811, locking nuts 813 are installed on external threads of the locking bolts 812, the clamping seat 810 is in an inverted U shape, the middle width of the locking bolts 810 is matched with the width of the platform secondary beam 802 and the platform main beam 801, so that the embedded installation effect is realized, the connection is realized by penetrating the clamping seat 810 and the insertion holes 811 on the platform secondary beam 802 or the platform main beam 801 through the locking bolts 812, and finally, the transportation effect is realized through the disassembly and assembly.
In addition, the platform main beam 801 and the platform secondary beam 802 are also welded with positioning seats 814, the positioning seats 814 are located at two ends of the jack 811, the positioning seats 814 are composed of two positioning strips with the jack 811 as the center, and the distance between the two positioning strips is matched with the distance between the side walls of the clamping seat 810, so that the rapid positioning and installation of the clamping seat 810 are facilitated.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.