CN109339436B - Special-shaped concrete hole body assembled formwork supporting device - Google Patents
Special-shaped concrete hole body assembled formwork supporting device Download PDFInfo
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- CN109339436B CN109339436B CN201811356735.2A CN201811356735A CN109339436B CN 109339436 B CN109339436 B CN 109339436B CN 201811356735 A CN201811356735 A CN 201811356735A CN 109339436 B CN109339436 B CN 109339436B
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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
- E04G11/02—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for rooms as a whole by which walls and floors are cast simultaneously, whole storeys, or whole buildings
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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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
- E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
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- Civil Engineering (AREA)
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Abstract
The invention discloses an assembled template supporting device for a special-shaped concrete cavity, which comprises a plurality of lattice columns, wherein at least one layer of plane truss girder is arranged in the height direction of a square columnar support formed by all the lattice columns, and the plane truss girder comprises a transverse truss girder fixedly connected between two adjacent lattice columns and a longitudinal truss girder connected between two adjacent and mutually parallel transverse truss girders; a string truss girder is fixedly arranged between lattice columns at the edge of the top end of the columnar support, a plane truss girder is arranged at the top end of the lattice column in a space enclosed by all the string truss girders, and the plane truss girder at the top end of the lattice column is fixedly connected with the string truss girders through a plurality of longitudinal truss girders and transverse truss girders; and a plurality of supporting mechanisms for supporting the side surfaces of the template are arranged in the height direction of the two columns of latticed columns which are parallel to the longitudinal truss girder and are positioned at the outermost layer.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to an assembled template supporting device for a special-shaped concrete hole body.
Background
In the concrete engineering construction of the tunnel body, such as structures of subways, pipe galleries, wind tunnel laboratories and the like, the section change is large, the section size of the built concrete tunnel body is large, the clear width in the horizontal direction exceeds and the height exceeds 20 meters, the shrinkage gradually changes along the whole length of the wind tunnel, and each surface is in a trapezoidal shrinkage state along the longitudinal direction, and the tunnel body belongs to a special-shaped concrete structure. Because of span and highly great, concrete slab and roof beam dead weight are very big, adopt traditional support mode to construct, and steel shotcrete weight is very big, will lead to unable use small-size equipment or artifical installation and demolish, and the installation accuracy requires extremely high.
Although sectional construction can be adopted, the hole body is in a closed state, the possibility of hoisting the internal support system out by adopting machinery is extremely low, the installation precision is not well controlled, the implementation difficulty of the technical measures adopted during dismantling is extremely high, the change of the internal section of the structure is large, the sizes of the support rod pieces and the templates are various, the repeated utilization rate is extremely low, the required rigidity of the templates is large, and the cost is high. After the concrete reaches the age, the internal support system is mechanically dragged to support at a heavy tonnage when being dismantled, so that the surface of the inner wall of the structure is easily damaged.
The invention patent CN107965068A discloses a connecting structure of a cold-formed thin-wall section steel combined wall body diagonal brace and a keel frame, which improves the shear-resistant bearing capacity and the ductility of the cold-formed thin-wall section steel combined wall body, improves the energy consumption capacity of the wall body, has an integral structure which is easy to disassemble and replace and has higher assembly degree; however, the supporting system has low recycling rate of materials, is not suitable for being used in projects with heavy self-weight and large project amount, can cause material waste and high manufacturing cost, has complex assembly steps, needs a large amount of component manufacturing, and is easy to cause errors in component processing stages, so that the assembly precision requirement is not met, and the popularization and application are limited in a large amount.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the special-shaped concrete hole body assembled formwork supporting device which is convenient to assemble and disassemble.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
the assembled formwork supporting device for the special-shaped concrete cavity comprises a plurality of lattice columns, wherein at least one layer of planar truss girder is arranged in the height direction of a square columnar support formed by all the lattice columns, and the planar truss girder comprises a transverse truss girder fixedly connected between two adjacent lattice columns and a longitudinal truss girder connected between two adjacent and mutually parallel transverse truss girders;
a string truss girder is fixedly arranged between lattice columns at the edge of the top end of the columnar support, a plane truss girder is arranged at the top end of the lattice column in a space enclosed by all the string truss girders, and the plane truss girder at the top end of the lattice column is fixedly connected with the string truss girders through a plurality of longitudinal truss girders and transverse truss girders;
and a plurality of supporting mechanisms for supporting the side surface of the template are arranged in the height direction of the two columns of lattice columns which are parallel to the longitudinal truss girder and positioned at the outermost layer, and three supporting mechanisms which are in triangular support are connected at the same height position of each lattice column.
Furthermore, each lattice column comprises a plurality of lattice sections, and two adjacent lattice sections are fixedly connected through column end plates with the size larger than that of the end faces of the lattice sections and high-strength bolts; and the transverse truss girder between two adjacent lattice columns in the plane truss girder which is not positioned at the top ends of the lattice columns is fixed on the column end plate through the girder end plates at the two ends of the transverse truss girder and the high-strength bolt.
Furthermore, the supporting mechanism comprises a connecting plate fixed on the column end plate and a reinforcing plate inserted into the template and fixedly connected with the template, and a supporting rod arranged on the connecting plate is connected with the reinforcing plate through an adjusting mechanism for adjusting the angle of the template.
Furthermore, the adjusting mechanism comprises a support bar, an adjusting plate and an arc-shaped sliding groove formed in the middle of the reinforcing plate and threaded holes formed in the two sides of the reinforcing plate, the adjusting plate is mounted in the threaded holes through adjusting bolts, one end of the support bar is mounted in the arc-shaped sliding groove through high-strength bolts, and the other end of the support bar is fixedly connected with the support bar penetrating through the adjusting plate.
Furthermore, the string-stretched truss girder comprises a steel cable and a transverse truss girder fixed at the top end of the lattice column, a plurality of support frames are fixed on the lower surface of the transverse truss girder along the length direction, and each support frame is composed of a plurality of steel pipes which extend downwards and are converged at one point; two ends of the steel cable are fixed at two ends of the transverse truss girder, and the middle part of the steel cable is welded at a junction point at the lower end of the support frame.
Furthermore, reinforcing ribs are arranged at two ends of the transverse truss girder for installing the steel cable, and two ends of the steel cable are fixed at two ends of the transverse truss girder through locking bolts.
Furthermore, a top end plate is fixedly installed at the top end of the lattice column, and all transverse truss girders at the top end of the lattice column are fixed on the top end plate; adjusting bolts for adjusting the levelness of the top surface of the template are arranged on the top end plate of the latticed column positioned at the four corners of the columnar support; and high-strength bolts fixedly connected with the top surface of the template are arranged on the top end plates of the lattice columns.
Further, the template that the template strutting arrangement is used for supporting is the octagon that contracts gradually, and the template includes steel inner formword and wooden exterior sheathing, and steel inner formword and wooden exterior sheathing pass through stagnant water stock fixed connection to it has concrete layer to fill in the clearance between steel inner formword and wooden exterior sheathing.
The invention has the beneficial effects that:
(1) the lattice column, the string truss girder and the plane truss girder are small-section steel space rod piece structures, the self weight of parts is reduced, the maximum rigidity can be provided, the deformation of the structure and the component under the action of concrete construction load is reduced, and the requirement of clear water concrete construction precision control index is met. The supporting mechanism connected with the lattice column is a short-distance linear cylindrical support, and the stressed member adopts the lattice column and the two-way string-stretching truss girder, so that the self-weight is light, the manual disassembly is easy, the structural integrity is strong, and the reliability is high.
(2) All parts are assembled on the ground firstly and then are assembled in a modular hoisting mode, so that the construction speed is improved, and errors caused by field multi-component assembly are reduced. For similar components such as beams and columns, the specification and the overall dimension of the single body comprise standard components and non-standard components, the standard components can be recycled, the recycling rate can reach 90%, errors in the component processing stage can be reduced, and the component processing cost can also be reduced.
(3) In the assembly construction stage, each part is light in weight, convenient to carry, install and disassemble manually, and each part is single in section, so that the parts are convenient to install and take place, the accumulated error is small in transmission, the sections are small, the parts are easy to disassemble, and the assembly and disassembly tool is suitable for manual disassembly.
(4) The construction monitoring is characterized in that the components are regularly arranged, the cross section is small, the permeability requirement can be met, the equipment is erected, the key of the engineering monitoring is the side wall of the formwork, and the supporting mechanism of the side wall is long in length and distributed in a dispersed triangular mode, so that the permeability is good, the monitoring of the important parts of the steel inner formwork is easy to realize, and the monitoring cost is relatively reduced.
(5) The string truss girder in the main structure has high redundancy and better stress performance, the structure is completely in the elastic deformation stage, the lattice column, the string truss girder and the plane truss girder are all steel members, and a plurality of monomers are assembled together on site when the supporting device is formed, so that the reuse rate is up to 100%.
(6) The force transmission path is clear and direct, the mechanical property is easy to ensure, and the calculation model has high conformity with the mechanical related assumption of the structure, thereby facilitating the structure design; according to calculation, the supporting device is small in deformation and meets the requirements of fair-faced concrete construction, the whole supporting device has large space integral rigidity, and the deformation bearing capacity of stable structure in the concrete pouring process can be guaranteed.
Drawings
Fig. 1 is a three-dimensional view of the assembled form supporting device of the special-shaped concrete hole body and a form after being assembled together.
FIG. 2 is a front view of the device of FIG. 1;
figure 3 is a schematic view of a transverse truss beam installed between two lattice columns.
Fig. 4 is a schematic view of a transverse truss girder and a longitudinal truss girder fixedly installed together by a girder end plate.
Fig. 5 is a schematic view of the structure of a truss girder with a string.
Fig. 6 is a partial schematic view of the installation of the ends of the steel cables on the transverse truss beams.
FIG. 7 is a perspective view of the lattice column being attached to the intersection of two sidewalls of the form by the support mechanism.
Fig. 8 is a front view of the structure of fig. 7.
Fig. 9 is a schematic structural view of a partial template.
Fig. 10 is a top view of the top endplate.
FIG. 11 is a schematic view of the top end plate and partial form secured together by adjusting bolts.
Wherein, 1, lattice column; 11. a lattice section; 12. a column end plate; 13. a top end plate; 2. a planar truss beam; 21. a transverse truss beam; 211. a beam end plate; 22. a longitudinal truss beam; 3. a string truss girder; 31. a steel cord; 32. reinforcing ribs; 33. locking the bolt; 34. a steel pipe; 4. a support mechanism; 41. a connecting plate; 42. a support bar; 43. a reinforcing plate; 431. an arc-shaped chute; 432. adjusting the bolt; 433. a high-strength bolt; 44. an adjusting plate; 45. a supporting strip; 5. a template; 51. steel inner formworks; 52. a wooden outer template; 53. water stopping anchor rods; 54. and a concrete layer.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
The structure of the formwork 5 to be supported by the special-shaped concrete hole assembly type formwork 5 supporting device in the scheme can be seen from the outermost similar gradually-contracted octagonal structure with the bottom surface removed in fig. 1 and fig. 2, as shown in fig. 9, the formwork 5 comprises a steel inner formwork 51 and a wood outer formwork 52, the steel inner formwork 51 and the wood outer formwork 52 are fixedly connected through a water-stop anchor rod 53, a concrete layer 54 is filled in a gap between the steel inner formwork 51 and the wood outer formwork 52, the steel inner formwork 51 is a steel plate, and the wood outer formwork 52 is a wood formwork.
As shown in fig. 1 and 2, the supporting device for the assembled formwork 5 of the special-shaped concrete hole body comprises a plurality of lattice columns 1, each lattice column 1 comprises a plurality of lattice sections 11, and two adjacent lattice sections 11 are fixedly connected through a column end plate 12 and a high-strength bolt 433, wherein the size of the column end plate is larger than that of the end face of each lattice section 11, specifically, the column end plate 12 is welded at the end part of each lattice section 11, the column end plates 12 are fixed together between the two lattice sections 11 through the high-strength bolt 433, and the high-strength bolts 433 preferably adopt friction type high-strength bolts.
When the lattice section 11 is connected with the lattice section 11, the friction type high-strength bolts 433 with the diameter of 16mm are adopted between the column end plates 12 for connection, bolt holes are 0.5mm larger than bolt rods and are installed according to a symmetrical sequence, assembly errors are reduced, the weight of the lattice section 11 in the middle of the lattice column 1 is about 80kg, the weight of the lattice sections 11 at two ends of the lattice column 1 is about 60kg, the assembly can be implemented manually, automobile hoisting (load is 5 tons) can also be adopted, large-scale construction machinery is not needed, and the requirement of manual carrying during disassembly is met.
As shown in fig. 1 to 3, at least one layer of planar truss girder 2 is arranged in the height direction of the square columnar support formed by all the lattice columns 1, and the number of the planar truss girder 2 depends on the height of the supported template 5; the plane truss girder 2 comprises a transverse truss girder 21 fixedly connected between two adjacent lattice columns 1 and a longitudinal truss girder 22 connected between two adjacent and mutually parallel transverse truss girders 21.
The cross sections of the transverse truss girders 21 and the longitudinal truss girders 22 have higher bending rigidity, are conveniently connected with the column end plates 12, and can improve the structural integrity of the supporting device while reducing the calculated length of the lattice column 1.
The lattice column 1 at the edge of the top end of the columnar support is fixedly provided with a string truss girder 3, the top end of the lattice column 1 in the space enclosed by all the string truss girders 3 is provided with a plane truss girder 2, and the plane truss girder 2 at the top end of the lattice column 1 is fixedly connected with the string truss girders 3 through a plurality of longitudinal truss girders 22 and transverse truss girders 21.
The two columns of lattice columns 1 which are parallel to the longitudinal truss girder 22 and are positioned at the outermost layer are provided with a plurality of supporting mechanisms 4 for supporting the side surface of the template 5 in the height direction, and the same height of each lattice column 1 is connected with three supporting mechanisms 4 which are in triangular support.
As shown in fig. 4, the structure of the transverse truss girder 21 and the longitudinal truss girder 22 is identical, and in order to facilitate the installation of the longitudinal truss girder 22 and the transverse truss girder 21, the girder end plates 211 are fixedly installed at both ends of the longitudinal truss girder 22 and the transverse truss girder 21, and the transverse truss girder 21 between two adjacent lattice columns 1 in the planar truss girder 2 that is not located at the top ends of the lattice columns 1 is fixed on the column end plate 12 by the girder end plates 211 and the high strength bolts 433 at both ends thereof.
The part of the column end plate 12 extending out of the lattice section 11 is connected with the beam end plate 211 of the transverse truss girder 21 by using a friction type high-strength bolt 433, and the cross section of the transverse truss girder 21 is in the plane of the cross section of the lattice section 11.
The supporting height of the transverse truss girder 21 and the longitudinal truss girder 22 is just the height of one lattice section 11, the length of the longitudinal truss girder 22 is equal to the distance between two longitudinally adjacent lattice columns 1, the length of the transverse truss girder 21 is equal to the distance between two transversely adjacent lattice columns 1, and by adopting the arrangement of the height and the length, the installation error can be effectively reduced.
As shown in fig. 10, a top end plate 13 is fixedly mounted on the top end of the lattice column 1, the top end plate 13, the beam end plate 211 and the column end plate 12 are all square steel plates, and bolt holes for mounting high-strength bolts 433 are formed in the steel plates. All transverse truss girders 21 at the top end of the lattice column 1 are fixed on the top end plate 13; the longitudinal truss girder 22 is fixedly connected with the transverse truss girder 21 through a high-strength bolt 433 and a girder end plate 211 welded at two ends of the longitudinal truss girder 22, and the transverse truss girder 21 between two adjacent lattice columns 1 in the planar truss girder 2 at the top ends of the lattice columns 1 is fixed on the column end plate 12 through the girder end plates 211 and the high-strength bolt 433 at two ends.
In practice, as shown in fig. 7 and 8, the support mechanism 4 preferably includes a connecting plate 41 fixed to the column end plate 12 and a reinforcing plate 43 inserted into the formwork 5 and fixedly connected to the formwork 5, and the support rod 42 mounted on the connecting plate 41 is connected to the reinforcing plate 43 through an adjusting mechanism for adjusting the angle of the formwork 5.
The side of the connecting plate 41 is triangular, one surface of the connecting plate is fixed on the column end plate 12 through a friction type high-strength bolt 433, and the support rod 42 is fixed on the surface of the connecting plate 41 close to the template 5.
The adjusting mechanism comprises a support bar 45, an adjusting plate 44 and an reinforcing plate 43, wherein the middle part of the support bar is provided with an arc-shaped sliding groove 431, the two sides of the support bar are provided with threaded holes, the adjusting plate 44 is arranged in the threaded holes through an adjusting bolt 432, one end of the support bar 45 is arranged in the arc-shaped sliding groove 431 through a high-strength bolt 433, and the other end of the support bar is fixedly connected with a support bar 42 which penetrates.
When the angle of the template 5 is adjusted, the fine adjustment of the installation angle is mainly achieved by adjusting the inclination of the supporting rod 42, and the specific implementation process is as follows: firstly, the angle between the supporting rod 42 and the template 5 is adjusted by adjusting the fixed position of the supporting rod 45 in the arc-shaped sliding groove 431 so that the supporting rod 45 and the supporting rod 42 are positioned on the same straight line, and then the adjusting plate 44 is inclined to a certain degree by finely adjusting the two adjusting bolts 432 arranged in the threaded holes on the reinforcing plate 43, so that the angle between the supporting rod 42 positioned on the adjusting plate 44 and the template 5 is finely adjusted to finally realize the angle adjustment of the template 5.
The supporting rod 42 that the template 5 and the lattice column 1 are connected and adopt is close to the end plate 12, can reduce the length of supporting mechanism 4, adopts high strength bolt 433 to fix between connecting plate 41 and end plate 12 and reinforcing plate 43 and the support bar 45, all adopts friction type high strength bolt 433 to connect between the lattice section 11 in the lattice column 1, can reduce the deformation of side board.
As shown in fig. 5 and 6, the truss girder 3 includes a steel cable 31 and a transverse truss girder 21 fixed at the top end of the lattice column 1, a plurality of support frames are fixed on the lower surface of the transverse truss girder 21 along the length direction, and each support frame is composed of a plurality of steel pipes 34 extending downwards and converging at one point; two ends of the steel cable 31 are fixed at two ends of the transverse truss girder 21, and the middle part of the steel cable is welded at the lower end junction of the support frame.
The steel cable 31 can improve the bending rigidity of the beam-string truss girder 3 and reduce the vertical midspan deformation of the girder in the elastic stage, the steel cable 31 and the transverse truss girder 21 are adopted to form the beam with reduced self-weight, and when the steel cable 31 is arranged on the transverse truss girder 21, the steel cable 31 is mainly fixed at two ends of the transverse truss girder 21 by applying pretightening force by an anchorage device.
In order to avoid the instability of the steel plate at the cable head of the steel cable 31, reinforcing ribs 32 are arranged at two ends of the transverse truss girder 21 for installing the steel cable 31, and the cable heads at two ends of the steel cable 31 are fixed at two ends of the transverse truss girder 21 through locking bolts 33; the thickness of the reinforcing rib 32 is 14mm, the plate height is 50mm, and the prestress on the steel cable 31 is adjusted by adjusting the length of the nut of the locking bolt 33, so that the midspan deflection of the transverse truss girder 21 is reduced, and the vertical deflection control of the girder in wind tunnel construction is met.
After the transverse truss girder 21 of the truss string girder 3 is installed on the top end plate 13 of the lattice column 1, the height mark error of the top beam top of the lattice column 1 is ensured to be within 1mm, and the beam top can be checked by adopting a level gauge in the installation process.
As shown in fig. 11, the top end plate 13 of the lattice column 1 at the four corners of the columnar support is provided with adjusting bolts 432 for adjusting the levelness of the top surface of the template 5; and high-strength bolts 433 fixedly connected with the top surfaces of the templates 5 are arranged on the top end plates 13 of the lattice columns 1.
When the strutting arrangement of this scheme of adoption supported template 5, self tapping screw thread on four angle steel of top surface of template 5, adjust four adjusting bolt 432 of four angles departments of being fixed in template 5 top surface soon, the height of the flexible top surface angle point of adjustment template 5 through adjusting bolt 432, realize regulation and control and space orientation of top template 13 to template 5 top surface roughness and height, and adopt the spirit level to check, when 5 four corners of template are at the design elevation, adopt friction type high strength bolt 433 to fix template 5 top surface on top template 13 of lattice column 1.
The following describes the application of the supporting device of the special-shaped concrete hole assembled form 5 of the present scheme:
pouring a concrete bottom plate in the wind tunnel, and after the construction is finished and the maintenance is in an age period, filling and plugging the concrete bottom plate outside the original support at the bottom of the concrete beam by using concrete buttresses and the like; the bottom plate of the lattice column 1 is fixed through anchor bolts embedded in the concrete bottom plate, the bottom plate of the lattice column 1 is fixed below the concrete protective layer, the nuts are unscrewed to be removed when the lattice column is convenient to remove, the anchor bolts exposing the protective layer are cut off in a gas cutting mode, and then the cement is supplemented and trowelled.
The lattice section 11 is hoisted to the bottom plate, the lowermost lattice section 11 is installed on the bottom plate through the high-strength bolt 433 and the column end plate 12 on the lattice section 11, then other lattice sections 11 are hoisted, and the lattice section 11 is assembled with the lattice section 11 through the high-strength bolt 433 and the column end plate 12 on the lattice section 11.
When installed at the level of the planar truss girder 2, the transverse truss girder 21 of the planar truss girder 2 is installed on the column end plate 12 of the adjacent two lattice columns 1 through the girder end plate 211, and the longitudinal truss girder 22 is installed on the adjacent and parallel two transverse truss girders 21 through the girder end plate 211.
And then, continuously installing the lattice sections 11 and installing the plane truss girders 2 at corresponding elevations, when the height of the lattice columns 1 reaches the designed supporting height in the wind tunnel, installing an upper top end plate 13 on the top surface of the uppermost lattice section 11, hoisting the string-opening truss girder 3, and installing the string-opening truss girder 3 on the two adjacent lattice columns 1 at the edge of the most circle.
Next, the top planar truss girder 2 is installed, and the top planar truss girder 2 is installed together with the string truss girders 3 through the transverse truss girders 21 and the longitudinal truss girders 22, and then the top plate of the upper formwork 5 is hung, and the top plate of the formwork 5 is leveled on the topmost planar truss girder 2 and the string truss girders 3 by adjusting the adjusting bolts 432.
Then, the top plate of the template 5 is fixed through the high-strength bolt 433 and the screw hole on the top end plate 13, then the inclined plates and the vertical plates on two sides of the template 5 are fixed on the lattice column 1 through the supporting mechanism 4, and when the template is installed, the angles of the inclined plates and the vertical plates relative to the supporting mechanism 4 are adjusted through the adjusting mechanism, so that the flatness of the template 5 is guaranteed.
Claims (5)
1. The special-shaped concrete hole body assembled formwork supporting device is characterized by comprising a plurality of lattice columns, wherein at least one layer of planar truss girder is arranged in the height direction of a square columnar support formed by all the lattice columns, and the planar truss girder comprises a transverse truss girder fixedly connected between two adjacent lattice columns and a longitudinal truss girder connected between two adjacent and mutually parallel transverse truss girders;
a string truss girder is fixedly arranged between the lattice columns at the edge of the top end of the columnar support, a plane truss girder is arranged at the top end of the lattice column in a space enclosed by all the string truss girders, and the plane truss girder at the top end of the lattice column is fixedly connected with the string truss girders through a plurality of longitudinal truss girders and transverse truss girders;
two rows of lattice columns which are parallel to the longitudinal truss girder and positioned at the outermost layer are provided with a plurality of supporting mechanisms for supporting the side surface of the template in the height direction;
each lattice column comprises a plurality of lattice sections, and two adjacent lattice sections are fixedly connected through column end plates with the size larger than that of the end faces of the lattice sections and high-strength bolts; the transverse truss girder between two adjacent lattice columns in the plane truss girder which is not positioned at the top ends of the lattice columns is fixed on the column end plate through the girder end plates at the two ends of the transverse truss girder and the high-strength bolt;
three supporting mechanisms which are in triangular support are connected at the same height of each lattice column; the supporting mechanism comprises a connecting plate fixed on the column end plate and a reinforcing plate inserted into the template and fixedly connected with the template, and a supporting rod arranged on the connecting plate is connected with the reinforcing plate through an adjusting mechanism for adjusting the angle of the template;
the adjusting mechanism comprises a support bar, an adjusting plate and arc-shaped sliding grooves formed in the middle of the reinforcing plate and threaded holes formed in the two sides of the reinforcing plate, the adjusting plate is installed in the threaded holes through adjusting bolts, one end of the support bar is installed in the arc-shaped sliding grooves through high-strength bolts, and the other end of the support bar is fixedly connected with a support bar which penetrates through the adjusting plate.
2. The special-shaped concrete hole assembly type formwork supporting device as claimed in claim 1, wherein the truss-string beam comprises a steel cable and a transverse truss beam fixed at the top end of the lattice column, a plurality of supporting frames are fixed on the lower surface of the transverse truss beam along the length direction, and each supporting frame is composed of a plurality of steel pipes which extend downwards and converge at one point; and two ends of the steel cable are fixed at two ends of the transverse truss girder, and the middle part of the steel cable is welded at a lower end junction of the support frame.
3. The fabricated formwork support device for a profiled concrete tunnel according to claim 2, wherein reinforcing ribs are provided at both ends of the transverse truss girder to which the steel cable is installed, and both ends of the steel cable are fixed at both ends of the transverse truss girder by locking bolts.
4. The special-shaped concrete hole assembly type formwork supporting device as claimed in any one of claims 1 to 3, wherein a top end plate is fixedly installed at the top end of the lattice column, and all transverse truss girders at the top end of the lattice column are fixed on the top end plate; adjusting bolts for adjusting the levelness of the top surface of the template are arranged on the top end plate of the latticed column positioned at the four corners of the columnar support; and high-strength bolts fixedly connected with the top surface of the template are arranged on the top end plates of the lattice columns.
5. The fabricated formwork supporting device for a profiled concrete hole as claimed in claim 1, wherein the formwork supporting device is used for supporting a formwork with a gradually shrinking octagonal shape, the formwork comprises a steel inner formwork and a wood outer formwork, the steel inner formwork and the wood outer formwork are fixedly connected through a water stop anchor rod, and a concrete layer is filled in a gap between the steel inner formwork and the wood outer formwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356735.2A CN109339436B (en) | 2018-11-15 | 2018-11-15 | Special-shaped concrete hole body assembled formwork supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811356735.2A CN109339436B (en) | 2018-11-15 | 2018-11-15 | Special-shaped concrete hole body assembled formwork supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109339436A CN109339436A (en) | 2019-02-15 |
| CN109339436B true CN109339436B (en) | 2020-09-22 |
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| CN201811356735.2A Expired - Fee Related CN109339436B (en) | 2018-11-15 | 2018-11-15 | Special-shaped concrete hole body assembled formwork supporting device |
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| CN113137086B (en) * | 2021-03-19 | 2022-11-25 | 中国建筑第八工程局有限公司 | Temporary supporting device for steel structure construction and construction method thereof |
| CN115559518B (en) * | 2022-10-18 | 2024-05-14 | 中铁九局集团第一建设有限公司 | Supporting device for special-shaped curved surface roof template and using method thereof |
| CN116180979A (en) * | 2023-02-22 | 2023-05-30 | 中国十七冶集团有限公司 | Combined truss of large-span special-shaped assembled pc component based on BIM technology |
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| FR2576355B1 (en) * | 1985-01-18 | 1987-02-27 | Cometal | FORMWORK FOR THE PRODUCTION OF TUNNELS |
| JP3933674B2 (en) * | 2005-09-29 | 2007-06-20 | 株式会社エムケーエンジニアリング | External formwork structure |
| CN103147509A (en) * | 2013-04-10 | 2013-06-12 | 北京市建筑工程设计有限责任公司 | Fully-enclosed assembled string structural system and construction method thereof |
| CN204081485U (en) * | 2014-07-25 | 2015-01-07 | 林经豪 | Beam bottom mother plate bracing frame |
| CN105298111B (en) * | 2015-10-19 | 2017-10-27 | 中交第一公路工程局有限公司 | Open cut tunnel lining construction template and its constructing device, method |
| CN205259603U (en) * | 2015-12-17 | 2016-05-25 | 中国水电建设集团十五工程局有限公司 | Centre form braced system |
| CN107165192B (en) * | 2017-06-16 | 2019-03-12 | 中建七局安装工程有限公司 | A kind of pipe gallery segmentation brake type fashioned iron door frame and its construction |
| CN107938704A (en) * | 2017-12-21 | 2018-04-20 | 浙江兴土桥梁专用装备制造有限公司 | Plate device and application method for piping lane construction |
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