CN202298480U - Cast-in-place formwork used for bridge construction - Google Patents

Abstract

The utility model discloses a cast-in-place formwork used for bridge construction, which comprises a bottom die and side dies relatively arranged on the left side and the right side of the bottom die, wherein each side die comprises a side die panel, upper flange plates and lower flange plates; the upper flange plates and the lower flange plates are respectively welded on the upper end surface and the lower end surface of the side die panel; the left end and the right end of the bottom die are respectively fixedly provided with a plurality of vertically-upward bottom die lug plates; the outer end part of the lower flange plate is welded with a plurality of vertically-upward side die lug plates; the lower flange plate is arranged on the bottom die and is fixed with the bottom die by a plurality of horizontal shearing-resistance bolts; each bottom die lug plate is fixed with the corresponding side die lug plate respectively by vertical shearing-resistance bolts; and the upper flange plates on the side dies oppositely arranged on the left and the right are mutually connected respectively by a plurality of template draw bars. According to the cast-in-place formwork used for the bridge construction, the side dies bear horizontal loads, such as concrete side pressure, the side dies and the bottom die together bear vertical loads, such as the self weight of the concrete, and a support bracket does not need to be additionally arranged under the bottom die so as to achieve the purpose of saving space under the bottom die.

Description

Bridge construction is used cast-in-place mould bases

Technical field

The utility model relates to the bridge construction mould bases, is specifically related to bridge construction and uses cast-in-place mould bases.

Background technology

Cast-in-place mould bases plays an important role in bridge construction.At present the cast-in-place construction of case beam, bent cap, binder adopts full framing usually, lands steel pipe support or mobile formwork etc. and carry out; The common ground of these job practicess is that the side form of beam body to be poured only receives horizontal side pressure when building; Therefore, the final main bearing member of corresponding mould bases is main bearing beam and the steel pipe post that is arranged under the bed die.

But; For framework pier crossbeam and the concrete box girder of crossing over existing line; Because headroom is had special strict restriction, particularly the distance to the circuit building line is very little at the bottom of some engineering central sill, and main bearing beam and steel pipe post can't be set under bed die; Therefore, the cast-in-place construction under this situation is very difficult.

The utility model content

The utility model technical problem to be solved is that solution can't be provided with the framework pier crossbeam of support bracket and the problem that concrete box girder carries out cast-in-place construction because of limited space under the beam.

In order to solve the problems of the technologies described above; The technical scheme that the utility model adopted provides a kind of bridge construction and uses cast-in-place mould bases; Comprise bed die and the side form that is oppositely arranged on said bed die and arranged on left and right sides; Said side form comprises the side form panel and is welded on top flange plate, the bottom wing listrium on its upper and lower end face respectively; The left and right two ends of said bed die are fixed with a plurality of bed die otic placodes vertically upward respectively, and the outer end of said bottom wing listrium is welded with a plurality of side form otic placodes vertically upward, and said bottom wing listrium places on the said bed die and through a plurality of horizontal shearing bolts and said bed die and fixes; Each said bed die otic placode is fixed through vertical shearing bolt and corresponding said side form otic placode respectively, and the top flange plate on the left and right said side form that is oppositely arranged interconnects through a plurality of formwork ties respectively.

In such scheme; Said bed die comprises the bed die panel and is welded on the many foundation mould transverse stiffener on the said bed die panel bottom surface; Said bed die transverse stiffener is respectively along the left and right side that left and right directions is arranged in parallel and said bed die panel is stretched out at two ends respectively of base plate; Also be welded with many bed die longitudinal stiffeners on the bottom surface of said bed die panel; Said bed die longitudinal stiffener is fixing with said bed die transverse stiffener welding respectively, forms latticed reinforcement, and the bottom of said bed die otic placode has and the suitable groove of said bed die transverse stiffener profile; Said bed die otic placode is inserted into the two ends of said bed die transverse stiffener and fixing with said bed die transverse stiffener and the welding of said bed die panel respectively, and the outside of said bed die otic placode is welded with stiffener.

In such scheme, said bed die transverse stiffener is a channel-section steel, is welded with vertically disposed stiffener respectively in its left and right openings at two ends, and the side of said stiffener offsets with the lower side of base mould corresponding otic placode respectively and welds fixing.

In such scheme, be welded with on the lateral surface of said side form panel by the vertical stiffening rib of a plurality of side forms and many netted reinforcements that the horizontal stiffening rib of side form forms.

Upper end and the welding of said top flange plate, the lower end of the vertical stiffening rib of said side form and the welding of said bottom wing listrium at the vertical stiffening rib of side form described in the such scheme.

In such scheme, the horizontal stiffening rib of said side form is an angle steel.

In such scheme, said side form otic placode is fixing with the outer face welding of the corresponding vertical stiffening rib of said side form respectively.

In the utility model, the side form bottom surface of cast-in-place mould bases and side are fixed as one through horizontal shearing bolt and vertical shearing bolt with bed die respectively, therefore; Side form not only bears horizontal loadings such as concrete lateral pressure; Also bear vertical loads such as concrete deadweight jointly with bed die, opening class " U " the shaped steel case beam of promptly being made up of bed die and side form is as the load-carrying members along cast-in-place beam length direction; Do not need under bed die, to establish support bracket in addition, thereby reach the purpose of saving space under the bed die.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the bed die structural representation in the utility model;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the side form structural representation on right side in the utility model;

Fig. 5 is a right view for Fig. 4.

Among the figure: bed die 1, side form 2, formwork tie 3, last operating platform 4, following operating platform 5, bed die panel 10; Bed die transverse stiffener 11, bed die longitudinal stiffener 12, bed die otic placode 13, stiffener 14, the vertical shearing bolt of bed die hole 15; The horizontal shearing bolt of bed die hole 16, side form panel 20, top flange plate 21, bottom wing listrium 22, the vertical stiffening rib 23 of side form; The horizontal stiffening rib 24 of side form, side form otic placode 25, short vertical stiffening rib 26, the vertical shearing bolt of side form hole 27, the horizontal shearing bolt of side form hole 28.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is made detailed explanation.

As shown in Figure 1, the bridge construction that the utility model provides is used cast-in-place mould bases, comprises bed die 1 and the side form 2 that is oppositely arranged on bed die 1 and arranged on left and right sides.The structure of bed die 1 such as Fig. 2, (only showing the half the of bed die) shown in Figure 3; Bed die 1 comprises bed die panel 10 and is welded on the many foundation mould transverse stiffener 11 on bed die panel 10 bottom surfaces; Bed die transverse stiffener 11 is a channel-section steel; The left and right side that left and right directions is arranged in parallel and bed die panel 10 is stretched out at two ends respectively along bed die panel 10; The bottom surface of bed die panel 10 also is welded with many bed die longitudinal stiffeners 12 that are arranged in parallel, and the two ends of bed die longitudinal stiffener 12 are fixing with 11 welding of bed die transverse stiffener respectively, form latticed reinforcement.The right ends of bed die transverse stiffener 11 is respectively equipped with the bed die otic placode 13 that stretches out vertically upward; The bottom of bed die otic placode 13 has the groove suitable with bed die transverse stiffener 11; Bed die otic placode 13 is inserted on the bed die transverse stiffener 11 and is fixing with 10 welding of bed die panel with bed die transverse stiffener 11 respectively; The outside of bed die otic placode 13 is welded with stiffener 14; Be used to improve the rigidity of bed die otic placode 13, be respectively equipped with the vertical shearing bolt of bed die hole 15 on the bed die otic placode 13 of stiffener 14 left and right sides, the right ends of bed die panel 10 also is respectively equipped with the horizontal shearing bolt of many group bed dies hole 16.The top of two side forms 2 is respectively equipped with operating platform 4, and last operating platform 4 is separately positioned on the outside of side form 2, and the left and right two ends of bed die 1 are respectively equipped with down operating platform 5.

Combine Fig. 4, Fig. 5 again, this figure is the structural representation of right side side form, and the structure of left side side form is identical with the right side side form, the two opposing setting as shown in Figure 1 during use.Be that example describes its structure with the right side side form below, side form 2 comprises side form panel 20 and is welded on the top flange plate 21 of its upper and lower end, bottom wing listrium 22 respectively that the width of top flange plate 21 is greater than bottom wing listrium 22, to improve the integral rigidity of side form.The left end of top flange plate 21 stretches out side form panel 20 left, the lateral surface welding of the left side of bottom wing listrium 22 and side form panel 20.The end of bottom wing listrium 22 is welded with a plurality of side form otic placodes 25 vertically upward, and side form otic placode 25 is corresponding one by one with bed die otic placode 13 on the bed die 1.Be provided with many horizontal stiffening ribs 24 of side form on the lateral surface of side form panel 20 from top to bottom abreast, transverse stiffener 24 is an angle steel, and is welded to form latticed reinforcement through the vertical stiffening rib 23 of a plurality of side forms.The upper end of the vertical stiffening rib 23 of side form and top flange plate 21 welding, lower end and 22 welding of said bottom wing listrium.Side form otic placode 25 is fixing with the outer face welding of the vertical stiffening rib 23 of corresponding side form respectively.When the quantity of the vertical stiffening rib 23 of side form is less than bed die transverse stiffener 11, can use fixedly side form otic placode 25 (as shown in Figure 5) of short vertical stiffening rib 26 in the compartment of terrain.Be respectively equipped with on the side form otic placode 25 and the vertical shearing bolt of side form hole 27 one to one, the vertical shearing bolt of bed die hole 15, bottom wing listrium 22 is provided with and the horizontal shearing bolt of side form hole 28 one to one, the horizontal shearing bolt of bed die hole 16.

Again referring to Fig. 1; Top flange plate 21 on left and right two side forms 2 interconnects through a plurality of formwork ties 3; Bottom wing listrium 22 places respectively on the bed die 1 and through horizontal shearing bolt and fixes; Side form otic placode 25 is fixing through a plurality of vertical shearing bolts and bed die otic placode 13, thereby forms the cast-in-place mould bases of " U " shape that a complete opening makes progress.Wherein horizontal shearing bolt is linked to be integral body with bed die panel 10 and bottom wing listrium 22, with the horizontal shear of opposing along cast-in-place beam length direction, has guaranteed that the side form 2 of mould bases is stressed jointly with bed die 1; Vertical shearing bolt couples together the side form vertical stiffening rib 23 of bed die transverse stiffener 11 with side form 2, with vertical loads such as transmission concrete deadweights.

In the concreting process; Bear horizontal loadings such as concrete lateral pressure by side form 2; Bed die 1 is the load-carrying members along cast-in-place beam width direction; And vertical loads such as concrete deadweight are passed to side form 2, and forms the load-carrying members of opening class " U " shaped steel case beam by bed die 1 and side form 2 as the cast-in-place beam length direction in edge, load is passed to the support at cast-in-place beam two ends.

Side form 2 and bed die 1 are common when stressed, and the crooked shearing action (horizontal direction) that is produced is arranged between side form 2 and the bed die 1; Bed die 1 is owing to hang under side form 2 shearing action (vertical direction) that has gravity to produce between side form 2 and the bed die 1.Horizontal shearing bolt is selected according to following computational methods with the quantity of vertical shearing bolt.

(1) horizontal direction

Horizontal shear between side form and the bed die on the cast-in-place beam length direction unit length in edge:

$T_h=\frac{{\mathrm{VS}}_1}{I_x{t}_w}\×t_w\×1=\frac{{\mathrm{VS}}_1}{I_x}$

In following formula: V-calculates the shearing of section beam;

S ₁-soffit formwork is to the area moment of beam section natural axis;

I _x-the moment of inertia of section beam section of calculating to the x axle

Needing diameter on the unit length is the horizontal direction shearing bolt number n of d:

$n=\frac{T_h}{\frac{\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000099774320000011.png,HDA0000099774320000031.png"\; state="\{\{state\}\}">d</figure-callout>}}^2}{4}\&times;{\mathrm{\&tau;}}_d}=\frac{4T_h}{\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA0000099774320000011.png,HDA0000099774320000031.png"\; state="\{\{state\}\}">d</figure-callout>}}^2{\mathrm{\&tau;}}_d}$

In following formula: the diameter of the used horizontal direction shearing bolt of d-;

τ _dThe shear strength admissible value of-used horizontal direction shearing bolt;

(2) vertical direction

Between bed die and the side form because the vertical shear that produces on the concreting unit length:

V＝J+K+Q

In following formula: the deadweight of J-unit length concrete beam;

The deadweight of K-unit length bed die;

Q-unit length working load;

Needing diameter on the unit length is the vertical direction shearing bolt number m of φ:

$m=\frac{V}{\frac{\mathrm{\&pi;}{\mathrm{\&phi;}}^2}{4}\&times;{\mathrm{\&tau;}}_{\mathrm{\&phi;}}}=\frac{4V}{\mathrm{\&pi;}{\mathrm{\&phi;}}^2{\mathrm{\&tau;}}_{\mathrm{\&phi;}}}$

In following formula: the diameter of φ-used vertical direction shearing bolt;

τ _φThe shear strength admissible value of-used vertical direction shearing bolt.

The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under the enlightenment of the utility model, making, every with the utlity model has identical or close technical scheme, all fall within the protection domain of the utility model.

Claims (7)

1. bridge construction is used cast-in-place mould bases; Comprise bed die and the side form that is oppositely arranged on said bed die and arranged on left and right sides; It is characterized in that; Said side form comprises the side form panel and is welded on top flange plate, the bottom wing listrium on its upper and lower end face respectively; The left and right two ends of said bed die are fixed with a plurality of bed die otic placodes vertically upward respectively, and the outer end of said bottom wing listrium is welded with a plurality of side form otic placodes vertically upward, and said bottom wing listrium places on the said bed die and through a plurality of horizontal shearing bolts and said bed die and fixes; Each said bed die otic placode is fixed through vertical shearing bolt and corresponding said side form otic placode respectively, and the top flange plate on the left and right said side form that is oppositely arranged interconnects through a plurality of formwork ties respectively.

2. bridge construction as claimed in claim 1 is used cast-in-place mould bases; It is characterized in that; Said bed die comprises the bed die panel and is welded on the many foundation mould transverse stiffener on the said bed die panel bottom surface; Said bed die transverse stiffener is respectively along the left and right side that left and right directions is arranged in parallel and said bed die panel is stretched out at two ends respectively of base plate; Also be welded with many bed die longitudinal stiffeners on the bottom surface of said bed die panel; Said bed die longitudinal stiffener is fixing with said bed die transverse stiffener welding respectively, forms latticed reinforcement, and the bottom of said bed die otic placode has and the suitable groove of said bed die transverse stiffener profile; Said bed die otic placode is inserted into the two ends of said bed die transverse stiffener and fixing with said bed die transverse stiffener and the welding of said bed die panel respectively, and the outside of said bed die otic placode is welded with stiffener.

3. bridge construction as claimed in claim 2 is used cast-in-place mould bases; It is characterized in that; Said bed die transverse stiffener is a channel-section steel; Be welded with vertically disposed stiffener respectively in its left and right openings at two ends, the side of said stiffener offsets with the lower side of base mould corresponding otic placode respectively and welds fixing.

4. bridge construction as claimed in claim 1 is used cast-in-place mould bases, it is characterized in that, is welded with on the lateral surface of said side form panel by the vertical stiffening rib of a plurality of side forms and many netted reinforcements that the horizontal stiffening rib of side form forms.

5. bridge construction as claimed in claim 4 is used cast-in-place mould bases, it is characterized in that the upper end of the vertical stiffening rib of said side form and the welding of said top flange plate, the lower end of the vertical stiffening rib of said side form and the welding of said bottom wing listrium.

6. bridge construction as claimed in claim 4 is used cast-in-place mould bases, it is characterized in that, the horizontal stiffening rib of said side form is an angle steel.

7. bridge construction as claimed in claim 4 is used cast-in-place mould bases, it is characterized in that, said side form otic placode is fixing with the outer face welding of the corresponding vertical stiffening rib of said side form respectively.

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