CN114704028A - Construction method for improving forming quality of fair-faced concrete inverted trapezoidal multi-ribbed beam - Google Patents
Construction method for improving forming quality of fair-faced concrete inverted trapezoidal multi-ribbed beam Download PDFInfo
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- CN114704028A CN114704028A CN202210549607.XA CN202210549607A CN114704028A CN 114704028 A CN114704028 A CN 114704028A CN 202210549607 A CN202210549607 A CN 202210549607A CN 114704028 A CN114704028 A CN 114704028A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
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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
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention provides a construction method for improving the forming quality of an inverse trapezoidal multi-ribbed beam of fair-faced concrete, which comprises the following steps: the method comprises the following steps of processing a multi-ribbed beam bottom template, slotting a bottom plate, assembling the multi-ribbed beam bottom template, locally processing, erecting a template support, installing the multi-ribbed beam template, binding steel bars of the multi-ribbed beam and constructing concrete pouring. The construction method for improving the forming quality of the bare concrete inverted trapezoidal ribbed beam solves the problem that the forming quality is poor easily in the existing ribbed beam construction process by improving the existing ribbed beam bottom formwork and the existing ribbed beam construction process.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method for improving the forming quality of an exposed concrete inverted trapezoidal multi-ribbed beam.
Background
The adopted bare concrete is mostly vertical members such as walls, columns and the like, but along with the improvement of the building aesthetic requirements, more and more large-area horizontal structures also adopt the engineering of the bare concrete. As shown in fig. 1, which is a typical bare concrete ribbed beam slab profile, it is often used in building structures with large spans and limited beam height. For the bare concrete ribbed beam plate, the design of the bare concrete has the starting point of keeping the natural color of the concrete without other decorations, embodies the concept of environmental protection, and has very important significance for saving energy and avoiding resource consumption. Moreover, as-cast finish concrete construction, one shot forming has avoided a large amount of repairs of secondary and has plastered, is favorable to civilized construction, appears easily in the current close rib beam work progress: the quality problems of dimensional deviation of the arc and the beam side, slurry leakage at the joint and the like cause poor forming quality of the ribbed beam, and the key for improving the construction quality of the ribbed beam is to solve the two quality problems.
Disclosure of Invention
The embodiment of the invention provides a construction method for improving the forming quality of an exposed concrete inverted trapezoidal ribbed beam, and solves the problem of poor forming quality easily caused in the existing ribbed beam construction process by improving the existing ribbed beam bottom formwork and the existing ribbed beam construction process.
In view of the above problems, the technical solution proposed by the present invention is:
a construction method for improving the forming quality of an inverse trapezoidal multi-ribbed beam of fair-faced concrete comprises the following steps:
s1, processing a bottom template of the multi-ribbed beam, wherein the bottom template of the multi-ribbed beam comprises a vertical plate, a bottom plate, a trapezoidal plate and an arc-shaped plate, the vertical plate and the bottom plate are made of a film-coated multilayer plate with the thickness of 15mm, and the bottom plate and the vertical plate are processed into a trapezoidal template with the angle of 95 degrees;
s2, slotting a bottom plate, and respectively forming a first groove and a second groove on two sides of the top of the bottom plate in sequence;
s3, assembling bottom templates of the ribbed beam, clamping one side of the arc-shaped plate with one side of the first groove, keeping the other side of one side of the arc-shaped plate flush with the top of the vertical plate, assembling the bottom plate and the vertical plate by using a pneumatic nail gun, reinforcing the vertical plate and the bottom plate at a corner by using battens according to strength, assembling the arc-shaped plate, the vertical plate, the trapezoidal plate and the bottom plate by using a pneumatic nail, arranging the trapezoidal plate in the middle of the bottom plate, and filling foamed glue at the assembling positions of the vertical plate, the bottom plate and the arc-shaped plate after assembling is finished;
s4, performing local treatment, namely adding glass cement or waterproof putty to the joint of the arc-shaped plate and the bottom plate, and polishing or adding cement to the joint of the arc-shaped plate and the vertical plate;
s5, erecting formwork supports, supporting two supporting upright posts at the bottom of a beam by adopting a fastener type scaffold below the multi-ribbed beam at a distance of 600 x 400, arranging three horizontal cross braces at the two sides of the multi-ribbed beam by adopting 4 phi 16 counter bolts along the span direction at a distance of 600 and the two supporting upright posts between the multi-ribbed beams at a maximum distance of no more than 600mm, wherein the maximum distance between the upright posts is 1200mm, the bottom, the top and the middle positions of the multi-ribbed beam are respectively provided with one, the periphery of each vertical cross brace is sealed, and one cross brace from bottom to top is arranged at every four rows of upright posts;
s6, mounting the multi-ribbed beam template, mounting the multi-ribbed beam bottom template and the common wood template on the multi-ribbed beam, and supporting through a template bracket;
s7, binding the steel bars of the multi-ribbed beam; binding the multi-ribbed beam steel bar prestressed bars after the beam bottom die is erected, and binding according to a steel bar construction scheme and a prestressed steel bar construction scheme in the binding construction;
and S8, performing concrete pouring construction, and dismantling the formwork when the concrete strength meets the requirement specified by the scheme and is not lower than 10 Mpa.
As a preferred technical scheme of the invention, the arc-shaped plate is made of pvc, the thickness of the arc-shaped plate is 3.5mm, the radius of the arc-shaped plate is 50mm, and the connection part of the arc-shaped plate and the bottom plate is flush.
As a preferable technical scheme of the invention, the cross sections of the vertical plates and the bottom plate are trapezoidal, the size of the obtuse angle of the trapezoid is 95 degrees, the width of the bottom edge of the bottom plate is 528m, the height of the bottom plate is 15mm, and the height of the vertical plates is 46 mm.
As a preferred technical solution of the present invention, in the step S6, a sponge strip is disposed at a joint of the bottom form of the multi-ribbed beam and the common wooden form to prevent slurry leakage.
As a preferred technical solution of the present invention, in steps S5 and S6, when building a formwork support system, a frame beam support is installed first, and then a ribbed slab support is installed, the frame beam support and the ribbed slab support are respectively formed into a system and connected to each other so as to be detached, and on a beam bottom formwork, a formwork is arranged from the middle to both ends in a column grid along an elastic rib axis and a formwork position line, so as to avoid generating an accumulated error and generating a phenomenon that ribs at both ends are unequal.
As a preferred embodiment of the present invention, the step S8 includes:
s81, pouring concrete, and adopting a sectional pouring mode to perform pouring blanking;
s82, removing the formwork, loosening the adjusting nut of the support top support, firstly dropping the primary and secondary keels, then removing the secondary keels, removing the square wood pad strips and the bamboo plywood for the formwork splicing seam by using 1 small sledge stick with the diameter of 14mm and the length of 50cm, using the small sledge stick to take the wood ridge as a fulcrum, firstly prying the middle points of the opposite sides of the formwork, still taking the wood ridge as the fulcrum after the formwork is loosened, prying the inner ribs of the bottom feet of the formwork, slightly prying the formwork downwards, not easily removing the formwork, adopting a pneumatic formwork removing process, removing the primary keels after the formwork is loosened, then removing the uppermost horizontal support of the support system, removing the formwork, and finally removing the formwork of the support system for turnover use, wherein the formwork can not be too violent in force for removing the formwork, and can not be randomly pried, and can be lightly taken to prevent damage.
Compared with the prior art, the invention has the beneficial effects that: according to the construction method for improving the forming quality of the bare concrete inverted-trapezoid ribbed beam, the problem of poor forming quality in the existing ribbed beam construction process is solved by improving the existing ribbed beam bottom formwork and the existing ribbed beam construction process.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Fig. 1 is a schematic view of a support structure of a multi-ribbed beam disclosed in an embodiment of the invention;
FIG. 2 is a schematic view of an arrangement structure of upright rods at the bottom of a multi-ribbed beam disclosed by the embodiment of the invention;
FIG. 3 is a schematic structural view of a multi-ribbed beam bottom form disclosed in the prior art;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is an enlarged view of the structure at B in FIG. 3;
fig. 6 is a schematic flow chart of the construction method for improving the molding quality of the bare concrete inverted-trapezoid multi-ribbed beam disclosed by the embodiment of the invention.
Reference numerals: 1. a vertical plate; 2. a base plate; 21. a first groove; 22. a second groove; 3. a trapezoidal plate; 4. an arc-shaped plate; 5. and (4) foaming glue.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1-6, a construction method for improving the molding quality of an exposed concrete inverted trapezoidal multi-ribbed beam comprises the following steps:
s1, processing a bottom template of the multi-ribbed beam, wherein the bottom template of the multi-ribbed beam comprises a vertical plate 1, a bottom plate 2, a trapezoidal plate 3 and an arc-shaped plate 4, the vertical plate 1 and the bottom plate 2 are made of a film-coated multilayer plate with the thickness of 15mm, and the bottom plate 2 and the vertical plate 1 are processed into a trapezoidal template with the angle of 95 degrees;
specifically, the material of arc 4 is pvc, and the thickness of arc 4 is 3.5mm, and the radius of arc 4 is 50mm, and arc 4 flushes with bottom plate 2 junction, and the section shape of riser 1 and bottom plate 2 is trapezoidal, and trapezoidal obtuse angle size is 95, and 2 base widths of bottom plate are 528m, and 2 highly 15mm of bottom plate, and 1 highly 46mm of riser.
S2, slotting the bottom plate 2, and respectively and sequentially forming a first groove 21 and a second groove 22 on two sides of the top of the bottom plate 2;
the first recess 21 is used for the arc plate 4 to ensure that the bottom plate 2 and the arc plate 4 are on a horizontal plane, and the second recess 22 is used for ensuring that the arc plate 4 and the vertical plate 1 are on a plane.
S3, assembling a bottom template of the ribbed beam, clamping one side of an arc-shaped plate 4 with one side of a first groove 21, keeping the other side of one side of the arc-shaped plate 4 flush with the top of a vertical plate 1, assembling a bottom plate 2 and the vertical plate 1 by using a pneumatic nail gun, reinforcing the included angle between the vertical plate 1 and the bottom plate 2 by using battens according to strength, assembling the arc-shaped plate 4, the vertical plate 1, a trapezoidal plate 3 and the bottom plate 2 by using a pneumatic nail, arranging the trapezoidal plate 3 in the middle of the bottom plate 2, and filling foaming adhesive 5 at the assembled part of the vertical plate 1, the bottom plate 2 and the arc-shaped plate 4 after assembling is finished;
s4, performing local treatment, namely adding glass cement or waterproof putty to the joint of the arc-shaped plate 4 and the bottom plate 2, and polishing or adding cement to the joint of the arc-shaped plate 4 and the vertical plate 1;
s5, erecting formwork supports, supporting two supporting upright posts at the bottom of a beam by adopting a fastener type scaffold below the multi-ribbed beam at a distance of 600 x 400, arranging three horizontal cross braces at the two sides of the multi-ribbed beam by adopting 4 phi 16 counter bolts along the span direction at a distance of 600 and the two supporting upright posts between the multi-ribbed beams at a maximum distance of no more than 600mm, wherein the maximum distance between the upright posts is 1200mm, the bottom, the top and the middle positions of the multi-ribbed beam are respectively provided with one, the periphery of each vertical cross brace is sealed, and one cross brace from bottom to top is arranged at every four rows of upright posts;
s6, installing a multi-ribbed beam template, installing a multi-ribbed beam bottom template and a common wood template on a multi-ribbed beam, supporting through a template support, arranging a sponge strip at the joint of the multi-ribbed beam bottom template and the common wood template, installing a frame beam support when a template support system is erected, then installing a multi-ribbed plate support, forming the frame beam support and the multi-ribbed plate support into systems and connecting the frame beam support and the multi-ribbed plate support with each other so as to be detached, arranging a formwork from the middle to two ends in a column grid, and avoiding the occurrence of accumulated errors and the phenomenon that ribs at two ends are different;
specifically, 1, familiarizing with drawings, and determining division of a flowing water section according to the type and characteristics of an engineering structure; determining the plane arrangement of the template, the specifications, the number and the arrangement size of the longitudinal and transverse main keels; determining the combination mode of the formwork, wherein the formwork is a formwork on the surface of a ribbed beam, and comprises a bottom formwork, the place which is not provided with enough modulus or cannot be provided with the formwork is replaced by a wood formwork, checking the strength, rigidity and stability of the formwork and a support, drawing a design drawing of a whole set of formwork and a support system, wherein the design drawing comprises a formwork plane arrangement general drawing, a subsection plane drawing, an assembly drawing of the formwork and the support, a node big sample drawing and a part processing drawing, if the side lengths of the formwork are different, arranging a main keel (steel pipe) in the direction of a short side, and arranging a secondary keel in the direction of a long side; according to the size of the gap between the bottom edges of the formwork shells, the abutted seam battens can also adopt a shaped steel formwork or other materials matched with the formwork shells, the longitudinal batten backing strips and the abutted seam bamboo plywood are arranged in a full-length mode along the direction of the secondary keel, and the transverse batten backing strips and the abutted seam bamboo plywood are arranged in a disconnected mode;
2. when a formwork support system is erected, a frame beam support is installed firstly, then a dense rib plate support is installed, the frame beam support and the dense rib plate support form systems and are connected with each other so as to be detached, and the space between an upright rod, a cross brace and an inclined brace of the support system must meet the requirements of construction load and construction organization design, so that the construction safety is guaranteed;
3. when the main keels are installed, the lines need to be pulled through, the spacing needs to be accurate, and the lines need to be horizontal, flat and vertical;
4. before installing the wood below the ribs, a sideline of the formwork is paid out on the main keel, namely a position line of the dense ribs is paid out accurately, so that the axial line position of the wood below the ribs (namely the dense ribs) is accurate;
5. the method comprises the steps that a formwork is arranged in a column grid from the middle to two ends of an elastic rib axis line and a formwork position line on a beam bottom die, accumulated errors are avoided, the phenomenon that ribs at two ends are unequal is avoided, after the formwork is placed, a jacking screw rod is finely adjusted, the horizontal error between the formworks is smaller than 2mm through eye observation, then a leveling instrument is used for detection, arching is carried out according to design requirements, and the arching height is 1/1000-3/1000 of the full span length when the design is not required;
6. after the position of the formwork is checked and confirmed to be correct, the seam splicing of the formwork is carried out, firstly, the transverse batten backing strips and the transverse spliced bamboo plywood are installed according to the longitudinal batten backing strips and the longitudinal spliced bamboo plywood;
7. checking the formwork templates item by item according to the formwork item-by-item engineering quality evaluation standard, wherein the key points of the checking are the guarantee measures of the rigidity of the formwork and the tightness of the connecting nodes;
8. the formwork installation gap is sealed by an adhesive tape to prevent slurry leakage, the air holes are required to be blocked if the air holes are left, and a water-soluble release agent is coated after the formwork is installed.
S7, binding the steel bars of the multi-ribbed beam; binding the multi-ribbed beam steel bar prestressed bars after the beam bottom die is erected, and binding according to a steel bar construction scheme and a prestressed steel bar construction scheme in the binding construction;
s8, performing concrete pouring construction, and dismantling the formwork when the concrete strength meets the requirement specified by the scheme and is not lower than 10 Mpa;
specifically, step S8 includes:
and S81, pouring concrete, and pouring and blanking in a sectional pouring mode, wherein the blanking is not suitable to be concentrated when the concrete is poured, so that the form shell is prevented from being damaged due to excessive impact force, and the construction load of the form shell cannot be too large. Curing the concrete in time after final setting to prevent cracks caused by water evaporation;
s82, removing the formwork, loosening the adjusting nut of the support top support, firstly dropping the primary and secondary keels, then removing the secondary keels, removing the square wood pad strips and the bamboo plywood for the formwork splicing seam by using 1 small sledge stick with the diameter of 14mm and the length of 50cm, using the small sledge stick to take the wood ridge as a fulcrum, firstly prying the middle points of the opposite sides of the formwork, still taking the wood ridge as the fulcrum after the formwork is loosened, prying the inner ribs of the bottom feet of the formwork, slightly prying the formwork downwards, not easily removing the formwork, adopting a pneumatic formwork removing process, removing the primary keels after the formwork is loosened, then removing the uppermost horizontal support of the support system, removing the formwork, and finally removing the formwork of the support system for turnover use, wherein the formwork can not be too violent in force for removing the formwork, and can not be randomly pried, and can be lightly taken to prevent damage.
According to the construction method for improving the forming quality of the bare concrete inverted-trapezoid ribbed beam, the problem of poor forming quality in the existing ribbed beam construction process is solved by improving the existing ribbed beam bottom formwork and the existing ribbed beam construction process.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A construction method for improving the forming quality of an inverse trapezoidal multi-ribbed beam of fair-faced concrete is characterized by comprising the following steps:
s1, processing a bottom template of the multi-ribbed beam, wherein the bottom template of the multi-ribbed beam comprises a vertical plate, a bottom plate, a trapezoidal plate and an arc-shaped plate, the vertical plate and the bottom plate are made of a film-coated multilayer plate with the thickness of 15mm, and the bottom plate and the vertical plate are processed into a trapezoidal template with the angle of 95 degrees;
s2, slotting a bottom plate, and respectively forming a first groove and a second groove on two sides of the top of the bottom plate in sequence;
s3, assembling bottom templates of the multi-ribbed beam, clamping one side of the arc-shaped plate with one side of the first groove, keeping the other side of one side of the arc-shaped plate flush with the top of the vertical plate, assembling the bottom plate and the vertical plate by using a pneumatic nail gun, reinforcing the vertical plate and the bottom plate at the included angle by using battens according to strength, assembling the arc-shaped plate, the vertical plate, the trapezoidal plate and the bottom plate by using a pneumatic nail, arranging the trapezoidal plate in the middle of the bottom plate, and filling foaming adhesive at the assembled part of the vertical plate, the bottom plate and the arc-shaped plate after assembling is finished;
s4, performing local treatment, namely adding glass cement or waterproof putty to the joint of the arc-shaped plate and the bottom plate, and polishing or adding cement to the joint of the arc-shaped plate and the vertical plate;
s5, erecting formwork supports, supporting two supporting upright posts at the bottom of a beam by adopting a fastener type scaffold below the multi-ribbed beam at a distance of 600 x 400, arranging three horizontal cross braces at the two sides of the multi-ribbed beam by adopting 4 phi 16 counter bolts along the span direction at a distance of 600 and the two supporting upright posts between the multi-ribbed beams at a maximum distance of no more than 600mm, wherein the maximum distance between the upright posts is 1200mm, the bottom, the top and the middle positions of the multi-ribbed beam are respectively provided with one, the periphery of each vertical cross brace is sealed, and one cross brace from bottom to top is arranged at every four rows of upright posts;
s6, mounting the multi-ribbed beam template, mounting the multi-ribbed beam bottom template and the common wood template on the multi-ribbed beam, and supporting through a template bracket;
s7, binding the steel bars of the multi-ribbed beam; binding the multi-ribbed beam steel bar prestressed bars after the beam bottom die is erected, and binding according to a steel bar construction scheme and a prestressed steel bar construction scheme;
and S8, performing concrete pouring construction, and dismantling the formwork when the concrete strength meets the requirement specified by the scheme and is not lower than 10 Mpa.
2. The construction method for improving the forming quality of the bare concrete inverted trapezoidal multi-ribbed beam according to claim 1, characterized by comprising the following steps: the material of arc is pvc, the thickness of arc is 3.5mm, the radius of arc is 50mm, the arc with the bottom plate junction flushes.
3. The construction method for improving the forming quality of the bare concrete inverted-trapezoid multi-ribbed beam according to claim 1, wherein the vertical plates and the bottom plate are trapezoid in cross-sectional shape, the obtuse angle of the trapezoid is 95 degrees, the width of the bottom edge of the bottom plate is 528m, the height of the bottom plate is 15mm, and the height of the vertical plates is 46 mm.
4. The construction method for improving the forming quality of the bare concrete inverted trapezoidal multi-ribbed beam according to claim 1, characterized by comprising the following steps: in the step S6, sponge strips are arranged at the joints of the bottom formworks of the multi-ribbed beams and the common wood formworks, and the sponge strips are used for preventing slurry leakage.
5. The construction method for improving the forming quality of the bare concrete inverted trapezoidal multi-ribbed beam according to claim 1, characterized by comprising the following steps: in the step S5 and the step S6, when the formwork support system is erected, the frame beam supports are installed first, then the ribbed plate supports are installed, the frame beam supports and the ribbed plate supports form a system and are connected with each other so as to be detached, and the formwork is arranged from the middle to two ends in a column grid on the beam bottom die along the elastic rib axis and the formwork position line so as to avoid accumulated errors and unequal ribs at two ends.
6. The construction method for improving the forming quality of the bare concrete inverted trapezoidal multi-ribbed beam according to claim 1, characterized by comprising the following steps: the step S8 includes:
s81, pouring concrete, and adopting a sectional pouring mode to perform pouring blanking;
s82, removing the formwork, loosening the adjusting nut of the support top support, firstly dropping the primary and secondary keels, then removing the secondary keels, removing the square wood pad strips and the bamboo plywood for the formwork splicing seam by using 1 small sledge stick with the diameter of 14mm and the length of 50cm, using the small sledge stick to take the wood ridge as a fulcrum, firstly prying the middle points of the opposite sides of the formwork, still taking the wood ridge as the fulcrum after the formwork is loosened, prying the inner ribs of the bottom feet of the formwork, slightly prying the formwork downwards, not easily removing the formwork, adopting a pneumatic formwork removing process, removing the primary keels after the formwork is loosened, then removing the uppermost horizontal support of the support system, removing the formwork, and finally removing the formwork of the support system for turnover use, wherein the formwork can not be too violent in force for removing the formwork, and can not be randomly pried, and can be lightly taken to prevent damage.
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