CN101181796B - Curvature radius adjustable prefabricated box-beam mold and construction method thereof - Google Patents

Curvature radius adjustable prefabricated box-beam mold and construction method thereof Download PDF

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Publication number
CN101181796B
CN101181796B CN2006101183306A CN200610118330A CN101181796B CN 101181796 B CN101181796 B CN 101181796B CN 2006101183306 A CN2006101183306 A CN 2006101183306A CN 200610118330 A CN200610118330 A CN 200610118330A CN 101181796 B CN101181796 B CN 101181796B
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mould
bed die
panel
curvature
mold
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CN2006101183306A
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Chinese (zh)
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CN101181796A (en
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张耀生
杨德建
单晨晓
张士晓
周国河
王君健
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上海市建筑构件制品有限公司
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Abstract

The invention discloses a precast box girder mould with adjustable curvature radius and an installation method of the mould. Through adopting the conception of replacing the curve with a fold line with fixed length, the accurate lofting of the bottom mould, designing the side mould consisting of a plurality of fixed sections with a fixed length, providing elasticity changing sections and regulating and connecting bars between the fixed sections with a fixed length, the capacity of adjustable curvature radius of the fold line with a fixed length is realized. Meanwhile, through embedding regulating blocks on the side mould to realize the regulating of the length of an inner arc and an outer arc, the needs of fixed cross section and the prefabricated construction components with variable camber are met, and the manufacturing and constructing need of the continuous changing section faces and the prefabricated construction components are met. Adopting the prefabricated box girder mould with adjustable curvature radius of the invention, the general needs and accurate requirements of the designing curvature change is met, and the surface of the mould is smooth and beautiful with as less trace of a die plate joint as possible or no trace of the die plate joint.

Description

Curvature radius adjustable prefabricated box-beam mold and construction method thereof

Technical field

The present invention relates to building element goods field concrete prefabricated in the urban construction.Relate in particular to a kind of especially adjustable curvature radius mould of prefabricated case beam of precast concrete building element that is used for, its suitable form of fracture is that vertical straight line, section situation is the case beam of continuity variation or Fixed Sections for the both sides interarea; The invention still further relates to and adopt this mould to carry out the beam prefabricated construction method of case.

Background technology

Needs along with modern urban construction, in overpass case beam, bridge floor beam, track girder construction projects such as (track traffics), all kinds of deep cambers (minor radius), the shaped form beam that becomes (radius) curvature, plate etc. will be used among the project of all kinds of urban constructions in a large number.Particularly shaped form beam product quantity in single engineering project of change (radius) curvature is less relatively, specification is wide in variety, brings the contradiction and the difficulty of aspects such as cost, progress, quality for production and construction.

At the beam prefabricated production of shaped form or the construction of these changes (radius) curvature, present method mainly contains two kinds:

1. the timber structure form mould that uses of disposal pouring concrete;

2. make corresponding steel construction mould at various curvature.

More than two kinds of template forms all have certain defective.The former, relatively long, physical dimension error big (at the bottom of the precision) of high material consumption, production cycle, product surface are coarse.The latter, the production cycle is long, template versatility (utilization rate) is poor, the production cost height.

Summary of the invention

Technical problem to be solved by this invention provides curvature radius adjustable prefabricated box-beam mold and the construction method thereof that a kind of production cost is low, production efficiency is high and the pre-manufactured product presentation quality is good, to solve various deep cambers (minor radius) in the municipal construction project, the beam that becomes (radius) curvature concrete prefabricated element, the plate contradiction of cost, progress, quality and production efficiency etc. in process of production, overcome the above-mentioned defective that prior art exists.

The technical scheme of technical solution problem of the present invention is as follows:

A kind of curvature radius adjustable prefabricated box-beam mold comprises bed die, side form and end mould, and described side form comprises left side mould and right side mould, is separately positioned on the left and right sides of bed die; Described end mould comprises front end mould and rear end mould, is fixedly installed on the rear and front end of bed die respectively; Form between described bed die, side form and the end mould and can hold the die cavity of pouring into a mould prefabricated case beam; It is characterized in that,

Described left and right sides mould is fixedlyed connected with terrace by brace respectively, and the beam by being connected top between the mould of left and right sides pull bar and the beam body lower link that is connected the bottom on one's body is mutually permanently connected;

Described bed die is supported on the pedestal terrace, and it comprises joist and the bed die panel that is fixedly installed on the joist, and the curvature of two long sides of bed die panel is identical with the curvature of prefabricated case beam, and described joist is fixedly installed on the pedestal terrace;

Described side form is made of structural framing and side form panel, and described structural framing comprises abutment segment and the some fixed length canned paragraphs that is arranged on two ends; Described side form panel comprises that turnover regulates panel and fixed panel, fixed panel be provided with side form middle straight line segment the monoblock type panel its fixedly connected with some fixed length canned paragraphs; Get in touch bar by adjusting between abutment segment and adjacent fixed length canned paragraph, adjacent two the fixed length canned paragraphs and be connected, between two adjacent fixed length canned paragraphs of die cavity one side, leaving the strain gap; Described side form comprises that also 1~3 is regulated the abaculus section, and it comprises abaculus section skeleton and the abaculus section panel that is fixed on the skeleton, and described abaculus section panel is embedded between the side form panel;

Described end mould is fixedlyed connected with side form abutment segment end frame.

The invention also discloses the construction method of above-mentioned curvature radius adjustable prefabricated box-beam mold, it comprises the steps:

(1), bed die is installed: on the pedestal terrace, joist is installed, on joist, is installed and fixed the bed die panel, place bearing embedded part and inclination angle cushion block in bed die panel upper bracket position;

(2), according to the bed die panels feature of accurately setting-out and cutting side form march rate is adjusted;

(3), reinforcing bar is gone into mould: guarantee when going into mould that the correct in place of bearing embedded part and installation are smooth, guarantee the thickness of cover to reinforcement;

(4), side form is installed: the position during by adjustment curvature closes up side form and bed die in place and fixing;

(5), the end mould is proofreaied and correct and installed and fixed to side form;

(6), casting and compacting of concrete: segmentation, layering disturbing concrete are also implemented to vibrate; When concrete is poured into a mould to case beam top, and concrete surface waters and stops at ordinary times vibrating and remove anti-floating depression bar;

(7), stripping operation.

By above disclosed technical scheme as can be known, the present invention is by adopting the design by the broken line instead of curve of regular length, accurate setting-out by bed die, side form elasticity change the length adjustment of arc length inside and outside the adjusting, side form beam figure of section and the adjusting at end face (abutment segment) length and inclination angle, not only can satisfy the needs of Fixed Sections, change (radius) curvature prefabricated building components, also can satisfy the prefabricated building components production or the construction needs of successional change section, change (radius) curvature simultaneously.Adopt curvature radius adjustable prefabricated box-beam mold of the present invention not only can satisfy overall needs and required precision that design curvature changes, and smooth surface is attractive in appearance, as far as possible less or do not have a vestige of form joint.The design of entire die system can be satisfied the needs that whole camber beams (plate) are produced or constructed in certain individual works at least.

In concrete prefabricated building element goods, to the production of all kinds of deep cambers (minor radius), the overpass beam that becomes (radius) curvature, bridge floor beam, track girder shaped form beams such as (track traffics), use mould of the present invention and can reduce production costs significantly, enhance productivity and the precision and the presentation quality of the physical dimension of concrete prefabricated product.

Description of drawings

The section structure schematic diagram that Fig. 1 is at beam for prefabricated case beam mould of the present invention;

Fig. 2 faces structural representation for prefabricated case beam mould of the present invention in the end;

Fig. 3 is a bed die structural representation of the present invention;

Fig. 4 is the local section structural representation of mold bottom die of the present invention at the bearing place;

The typical box-beam structure of Fig. 5 for adopting mould of the present invention to make;

Fig. 6 faces structural representation for mould side form of the present invention;

Fig. 7 is a mould side form plan structure schematic diagram of the present invention;

Fig. 8 is an A-A section structure schematic diagram among Fig. 7;

Fig. 9 is a B-B section structure schematic diagram among Fig. 7;

The specific embodiment

Further specify the specific embodiment of the present invention below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, curvature radius adjustable prefabricated box-beam mold of the present invention comprises bed die 1, side form and end mould, and described side form comprises left side mould 2 and right side mould 2 ', is separately positioned on the left and right sides of bed die 1; Described end mould comprises front end mould 3 and rear end mould 3 ', is fixedly installed on the rear and front end of bed die 1 respectively; Form between described bed die, side form and the end mould and can hold the die cavity 4 of pouring into a mould prefabricated case beam 5;

Described left and right sides mould 2,2 ' is fixedlyed connected with terrace 7 by brace 6 respectively, and the upper connecting rod 8 by the connection of beam body between the left and right sides mould 2,2 ' is mutually permanently connected with the lower link 9 that beam body bed die bottom is connected;

As shown in Figure 3, Figure 4, described bed die 1 is supported on the pedestal terrace 10, it comprises joist 1-1 and the bed die panel 1-2 that is fixedly installed on the joist 1-1, the curvature of two long sides of bed die panel 1-2 is identical with the curvature of prefabricated case beam 5, described joist 1-1 is fixedly installed on the pedestal terrace 10, and pedestal terrace 10 is provided with on the terrace 7; Channel-section steel or the I-steel joist 1-1 as the bed die panel is installed on pedestal terrace 10, and the spacing of joist 1-1 should be decided the covering power of engineering project demand according to the bearing capacity and the template system of the high computational panel of concrete prefabricated product.The bearing capacity of pedestal terrace 10 should design according to the total load head of product, mould system etc., and the terrace face is according to the default embedded part of the spacing needs of joist 1-1, so that joist 1-1 is fixedlyed connected with pedestal terrace 10.The shaped steel specification of joist is selected for use, is generally: h=100mm~140mm.

Bed die panel 1-2 adopts 1~3 layer multi-layer gummed lacquer plate, and its middle and lower part is bearing embedded part corner and the purposes that improves multilayer gluing lacquer panel stiffness for 1~2 layer.Upper strata gummed lacquer plate contacts with concrete, carries out accurate setting-out, cutting curve according to the requirement of precast concrete.During setting-out, should consider the thickness of side form and bed die junction sealing strip.Determining of multilayer gluing lacquer flaggy number needs to consider the needs of location, bearing embedded part inclination angle.Gummed lacquer plate and shaped steel joist are connected and fixed with bolt.Periphery is carried out sealing and chamfering moulding with the rubber weather strip 14 of special moulding.

The member that the bearing embedded part is existed the inclination angle requirement.Comprise that also 1~2 layer of bed die panel in described top is provided with the embedded part perforate of offering by the size of bearing embedded part with wooden bearing inclination angle cushion block 1-3, described bearing inclination angle cushion block 1-3 is arranged in the perforate of embedded part location.

As Fig. 6~shown in Figure 9, described side form 2 is made of structural framing and side form panel, and described structural framing comprises abutment segment 2-1 and the some fixed length canned paragraph 2-2 that is arranged on two ends; Described side form panel comprises that turnover regulates panel 2-3 and fixed panel 2-4, fixed panel 2-4 be provided with side form middle straight line segment the monoblock type panel its fixedly connected with some fixed length canned paragraph 2-2; Get in touch bar 2-5 by adjusting between abutment segment 2-1 and adjacent fixed length canned paragraph 2-2, adjacent two the fixed length canned paragraph 2-2 and be connected, between two adjacent fixed length canned paragraph 2-2 of die cavity 4 one sides, leaving strain gap 2-6; Described side form comprises that also 1~3 is regulated abaculus section 2-7, comprises abaculus section skeleton 2-7-1 and the abaculus section panel 2-7-2 that is fixed on the skeleton 2-7-1, and described abaculus section panel 2-7-2 is embedded between the side form panel; Side form mainly adopts shaped steel as framework, and the model of shaped steel and specification are selected for use according to the size of product.The side form panel is with d=4~6mm steel plate, and the spacing of strain gap 2-6 is a, and the value of a is regulated the factors such as material, fixed form of panel and determined according to radius of curvature, form surfacing thickness and the turnover of concrete component.Can regulate curvature by adjusting contact bar 2-5 is set between adjacent fixed length canned paragraph 2-2, realize the function of fixed length broken line adjusting curvature.

Curved box girder since curvature change, interior outside arc length also changes thereupon.Regulate abaculus section 2-7 by on two side forms, being provided with 1~3 respectively, thereby satisfy the needs that outside arc length changes in the member.The panel 2-7-1 that regulates abaculus section 2-7 carries out embedded installation after length overall is regulated.Size b among Fig. 5 is the abaculus panel 2-7-1 length after regulating.

Described end mould is fixedlyed connected with side form abutment segment 2-1 end frame.

Described counterdie panel comprises 1~3 layer of gummed lacquer plate, and the curvature of two long sides of described upper strata gummed lacquer plate is identical with prefabricated case beam curvature.

As shown in Figure 1, also comprise the anti-floating depression bar 11 of internal mold, vertical pull bar and preformed hole suspension rod 13, the anti-floating depression bar of described internal mold places on the side form 2,2 '; Described vertical pull bar is connected the anti-floating depression bar 11 of internal mold and is fastening with joist 1-1, play the anti-floating effect of side form simultaneously; Described preformed hole suspension rod is arranged on the side form.

The invention also discloses the construction method of above-mentioned curvature radius adjustable prefabricated box-beam mold, it comprises the steps:

(1), bed die is installed: joist 1-1 is installed on pedestal terrace 10, installs and fixes bed die panel 1-2 on joist 1-1, bearing embedded part inclination angle corresponding inclination angle cushion block 1-3 is placed at the support position place on bed die panel 1-2;

(2), side form 2,2 ' is carried out the curvature adjustment, it comprises the steps: according to the bed die panel 1-2 feature of accurately setting-out

(a). remove the structural framing of side form straightway, loosen the connecting bolt of adjusting contact bar 2-5; That removes interlude respectively regulates abaculus section 2-7;

(b). left and right sides mould 2,2 ' intermediate beam figure are alignd with bed die intermediate beam figure, and mounting rail is lower link 8 and 9, preformed hole suspension rod 13 and preliminary fastening with the curvature adjustment to side form intermediate beam figure on one's body;

(c). press the beam-ends upper thread side form abutment segment in place of bed die, the beam of the beam body lower link of erection support section and limit deck-siding is pull bar and carry out suitably fastening on one's body;

(d). the curvature feature of pressing side form intermediate beam figure and abutment segment is installed adjusting abaculus section 2-7, and fixes with intermediate beam figure and abutment segment;

(e). adjusting panel 2-3 that each is reserved is installed, filling chink, and it is polished;

(f). side form straightway structural framing is connected with the curvilinear structures frame fixation;

(h). remove beam frock such as pull bar 8, beam body lower link 9, preformed hole suspension rod 13, anti-floating depression bar 11 and vertical pull bar and be displaced sideways the curve side form that withdraws from moulding on one's body.

(3), reinforcing bar is gone into mould: guarantee when going into mould that the correct in place of bearing embedded part and installation are smooth, guarantee the thickness of cover to reinforcement;

(4), side form is installed: the position during by adjustment curvature closes up side form and bed die in place and fixing; It comprises the steps:

(a). mounting rail is pull bar 8, beam body lower link 9 and tentatively fastening on one's body, presses the prefabricated case beam feature preformed hole suspension rod 13 is installed;

(b). pad side form 2,2 ' and terrace 7 between the gap;

(c). brace 6 is installed, and the brace of adjusting the same section of prefabricated case beam both sides carries out whole perpendicularity adjustment to side form;

(d). fastening beam is pull bar 8, beam body lower link 9 and control the top deck-siding on one's body, and it is also fastening that anti-floating depression bar 11 and vertical pull bar are installed;

(e). the passage frock is installed.

(5), side form is proofreaied and correct and install and fix the end mould, it comprises the steps:

(a). press the before default center of pedestal, put and draw center line;

(b). adjust brace 6 nuts of the same cross section place of side form both sides, each coordinate points of mould is proofreaied and correct by each coordinate points of center line and is checked;

(c). adjust the position of checking preformed hole, levelness and the elevation of proofreading and correct the suspension centre embedded part;

(d). the adjusting batten and the end face seal bar of side form end prefabricated case beam length are installed; Check finishing end mould sealing strip; The pull bar of installation end mould and end cross-arm and elder generation's fastening end cross-arm, the fastening bolt of fastening end mould again.

(6), casting and compacting of concrete: segmentation, layering disturbing concrete are also implemented to vibrate; When concrete is poured into a mould to case beam top, and concrete surface waters and stops at ordinary times vibrating and remove anti-floating depression bar 11;

(7), stripping operation: the preformed hole frock is rotated looseningly before concrete final set, treats to remove preformed hole and passage frock after the concrete final set, it comprises the steps:

(a). remove the parallels between terrace and the side form;

(b). remove end mould cross-arm, remove end mould and installation activity leg;

(c). remove beam on one's body, lower link;

(d). adopt the stressed mode of multiple spot that side form is outwards moved and carry out the demoulding.

Claims (10)

1. a curvature radius adjustable prefabricated box-beam mold comprises bed die (1), side form and end mould, and described side form comprises left side mould (2) and right side mould (2 '), is separately positioned on the left and right sides of bed die (1); Described end mould comprises front end mould (3) and rear end mould (3 '), is fixedly installed on the rear and front end of bed die (1) respectively; Form the die cavity (4) that can hold cast prefabricated case beam (5) between described bed die, side form and the end mould; It is characterized in that,
Described left and right sides mould (2,2 ') is fixedlyed connected with terrace (7) by brace (6) respectively, and the beam by being connected top between the left and right sides mould (2,2 ') pull bar (8) and the beam body lower link (9) that is connected the bottom on one's body is mutually permanently connected;
Described bed die (1) is supported on the pedestal terrace (10), it comprises joist (1-1) and is fixedly installed on bed die panel (1-2) on the joist (1-1), the curvature of two long sides of bed die panel (1-2) is identical with the curvature of prefabricated case beam (5), and described joist (1-1) is fixedly installed on the pedestal terrace (10);
Described side form (2,2 ') is made of structural framing and side form panel, and described structural framing comprises abutment segment (2-1) and the some fixed length canned paragraphs (2-2) that is arranged on two ends; Described side form panel comprises that turnover regulates panel (2-3) and fixed panel (2-4), fixed panel (2-4) be provided with side form middle straight line segment the monoblock type panel its fixedly connected with some fixed length canned paragraphs (2-2); Be connected by regulating contact bar (2-5) between abutment segment (2-1) and adjacent fixed length canned paragraph (2-2), adjacent two the fixed length canned paragraphs (2-2), between two adjacent fixed length canned paragraphs (2-2) of die cavity (4) one sides, leaving strain gap (2-6); Described side form comprises that also 1~3 is regulated abaculus section (2-7), and it comprises abaculus section skeleton (2-7-1) and be fixed on abaculus section panel (2-7-2) on the skeleton (2-7-1) that described abaculus section panel (2-7-2) is embedded between the side form panel;
Described end mould is fixedlyed connected with side form abutment segment (2-1) end frame.
2. curvature radius adjustable prefabricated box-beam mold according to claim 1 is characterized in that, described bed die panel comprises 1~3 layer of gummed lacquer plate, and the curvature of two long sides of described upper strata gummed lacquer plate is identical with prefabricated case beam curvature.
3. curvature radius adjustable prefabricated box-beam mold according to claim 2 is characterized in that, also comprises wooden bearing inclination angle cushion block, and described upper strata bed die panel is provided with the embedded part perforate, and described bearing inclination angle cushion block is arranged in the embedded part perforate.
4. curvature radius adjustable prefabricated box-beam mold according to claim 1 is characterized in that, described side form and bed die junction, end mould and side form junction are equipped with the moulding sealing strip.
5. curvature radius adjustable prefabricated box-beam mold according to claim 1 is characterized in that, also comprises the anti-floating depression bar of internal mold, vertical pull bar and preformed hole suspension rod, and the anti-floating depression bar of described internal mold places on the side form; Described vertical pull bar is connected the anti-floating depression bar of internal mold and is fastening with joist; Described preformed hole suspension rod is arranged on the side form.
6. the construction method of installation of a curvature radius adjustable prefabricated box-beam mold as claimed in claim 1 is characterized in that, comprises the steps:
(1), bed die is installed: go up at pedestal terrace (10) joist (1-1) is installed, install and fix bed die panel (1-2) on joist (1-1), bearing embedded part inclination angle corresponding inclination angle cushion block (1-3) is placed at the support position place on bed die panel (1-2);
(2), according to bed die panel (1-2) feature of accurately setting-out side form (2,2 ') is carried out the curvature adjustment;
(3), reinforcing bar is gone into mould: guarantee when going into mould that the correct in place of bearing embedded part and installation are smooth, guarantee the thickness of cover to reinforcement;
(4), side form installs: the position when adjusting curvature closes up side form and bed die in place and fixing, and the anti-depression bar that floats is installed;
(5), the end mould is proofreaied and correct and installed and fixed to side form;
(6), casting and compacting of concrete: segmentation, layering disturbing concrete are also implemented to vibrate; When concrete is poured into a mould to case beam top, and concrete surface waters and stops at ordinary times vibrating and remove anti-floating depression bar;
(7), stripping operation.
7. the construction method of installation of curvature radius adjustable prefabricated box-beam mold according to claim 6 is characterized in that, the curvature adjustment comprises the steps: said step (2) to side form (2,2 ')
(a). remove the structural framing of side form straightway, loosen the connecting bolt of adjusting contact bar (2-5); That removes interlude respectively regulates abaculus section (2-7);
(b). the intermediate beam figure of left and right sides mould (2,2 ') is alignd with bed die intermediate beam figure, and mounting rail is lower link (8,9), preformed hole suspension rod (13) and preliminary fastening with the curvature adjustment to side form intermediate beam figure on one's body;
(c). press the beam-ends upper thread side form abutment segment in place (2-1) of bed die, the beam of the beam body lower link of erection support section and limit deck-siding is pull bar and carry out suitably fastening on one's body;
(d). the curvature feature of pressing side form intermediate beam figure and abutment segment is installed adjusting abaculus section (2-7), and fixes with intermediate beam figure and abutment segment;
(e). adjusting panel (2-3) that each is reserved is installed, filling chink, and it is polished;
(f). side form straightway structural framing is connected with the curvilinear structures frame fixation;
(g). remove beam on one's body pull bar (8), beam body lower link (9), preformed hole suspension rod (13), anti-floating depression bar (11) with vertical pull bar and be displaced sideways the curve side form that withdraws from moulding.
8. the construction method of installation of curvature radius adjustable prefabricated box-beam mold according to claim 6 is characterized in that, said step (4) side form and bed die close up in place comprising the steps:
(a). mounting rail is pull bar (8), beam body lower link (9) and tentatively fastening on one's body, presses the prefabricated case beam feature preformed hole suspension rod (13) is installed;
(b). pad the gap between side form (2) and the terrace (7);
(c). brace (6) is installed, and the brace of adjusting the same section of prefabricated case beam both sides carries out whole perpendicularity adjustment to side form;
(d). fastening beam is pull bar (8), beam body lower link (9) and control the top deck-siding on one's body, and it is also fastening that anti-floating depression bar (11) and vertical pull bar are installed;
(e). the passage frock is installed.
9. the construction method of installation of curvature radius adjustable prefabricated box-beam mold according to claim 6 is characterized in that, said step (5) side form is proofreaied and correct and comprised the steps:
(a). press the before default center of pedestal, put and draw center line;
(b). adjust the brace nut of the same cross section place of side form both sides, each coordinate points of mould is proofreaied and correct by each coordinate points of center line and is checked;
(c). adjust the position of checking preformed hole, levelness and the elevation of proofreading and correct the suspension centre embedded part;
(d). the adjusting batten and the end face seal bar of side form end prefabricated case beam length are installed; Check finishing end mould sealing strip; The pull bar of installation end mould and end cross-arm and elder generation's fastening end cross-arm, the fastening bolt of fastening end mould again.
10. the construction method of installation of curvature radius adjustable prefabricated box-beam mold according to claim 6 is characterized in that, said step (7) stripping operation comprises the steps:
(a). remove the parallels between grade beam and the side form;
(b). remove end mould cross-arm, remove end mould and installation activity leg;
(c). remove beam on one's body, lower link;
(d). adopt the stressed mode of multiple spot that side form is outwards moved and carry out the demoulding.
CN2006101183306A 2006-11-14 2006-11-14 Curvature radius adjustable prefabricated box-beam mold and construction method thereof CN101181796B (en)

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