CN216372684U

CN216372684U - T-shaped joint forming die for UHPC prefabricated plate

Info

Publication number: CN216372684U
Application number: CN202120070291.7U
Authority: CN
Inventors: 张法; 吴新印; 李平辉; 肖建忠; 喻满; 秦智; 邹伟程; 黄杰
Original assignee: Hunan Zhonglu Huacheng Bridge Technology Co ltd
Current assignee: Hunan Zhonglu Huacheng Bridge Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-04-26
Anticipated expiration: 2031-01-12

Abstract

A T-shaped joint forming die for UHPC precast slabs belongs to a die for precast slabs. The bridge deck precast slab mainly solves the technical problems of low strength, complex construction and the like of the existing bridge deck precast slab. The key points of the technical scheme are as follows: the mold comprises a bottom mold and a vertical mold, the vertical mold is arranged on the periphery of the bottom mold in a longitudinally sealed matched manner, the outer edge of the bottom mold is a convex strip-shaped bottom mold convex edge, a groove matched with the bottom mold convex edge on the outer edge of the bottom mold is formed in the inner side of the vertical mold, a rubber groove mold is arranged at the upper end of the vertical mold, and the rubber groove mold comprises a rubber pressing plate and a supporting box frame; the rubber pressing plate is provided with an arched door-shaped long strip hole, and the arched door-shaped long strip hole comprises a semicircular groove and a rectangular groove; semicircular groove and rectangular groove can constitute an arch rectangular slotted hole each other, and the mounting dimension is more accurate, and it is also more convenient to install, and makes things convenient for each other sealed more. The method is mainly applied to the prefabrication process of the bridge deck precast slab.

Description

T-shaped joint forming die for UHPC prefabricated plate

Technical Field

The utility model relates to a die for a prefabricated plate, in particular to a T-shaped joint forming die for a UHPC prefabricated plate.

Background

The bridge deck directly bears vehicle load and environmental action, and is the most direct member affected by adverse factors such as overload, corrosion, fatigue and the like, so the working state of the bridge deck directly affects the durability and the driving comfort of the main structure of the bridge. Orthotropic steel bridge deck slabs and common concrete bridge deck slabs are two main bridge deck slab forms applied to bridge engineering at present. Ordinary concrete bridge deck slab can adapt to bituminous concrete bridge floor pavement or cement pavement betterly, and the driving effect is better, nevertheless because ordinary concrete tensile strength is on the low side, leads to its thick great, and the structure dead weight is great, is difficult to adapt to the demand of large-span bridge, and is easy to split near wet seam, hogging moment district, suspension cable anchor region. The orthotropic steel bridge deck has the advantages of light dead weight, large ultimate bearing capacity, short construction period and the like, and is widely applied to large-span bridges, but the orthotropic steel bridge deck operating for years is easy to generate diseases such as fatigue cracking, pavement damage and the like due to the low rigidity of the steel bridge deck, poor cohesiveness with asphalt concrete, poor deformation coordination performance and the like.

The ultra-high performance concrete (namely UHPC) has the advantages of high elastic modulus, high compression resistance, high tensile strength, good creep property and the like, can reduce the size of a structure, lighten the self weight of the structure, improve the effectiveness of the load resistance of the structure and increase the spanning capacity. Therefore, the ultra-high performance concrete bridge deck based on the ultra-high performance concrete performance research and development can avoid the difficult problems of fatigue cracking and easy pavement damage of orthotropic steel bridge deck, can reduce the self weight of the structure, adapts to the requirement of a large-span bridge, can solve the difficult problem of easy cracking of a common concrete bridge deck by the ultra-high performance concrete with excellent tensile performance, and has good durability.

At present, the rapid construction technology of prefabricated assembly in the bridge construction field is vigorously researched, developed and applied by the nation and the industry; similarly, technologies of prefabrication production, installation construction and the like of bridge deck structures applying the ultra-high performance concrete are gradually developed and begin to be applied; however, due to the lack of corresponding experience in the aspect of ultra-high performance concrete precast bridge deck in China, the corresponding template manufacturing, installation and the like are not mature enough. In addition, the standard ultra-high performance concrete bridge deck slab prefabricated part is generally in a cuboid structure (a step form exists at the edge wet joint part); according to the installation requirement of actual engineering, the prefabricated components of the ultra-high performance concrete bridge deck slab generally need to have ribs on four joint surfaces around. Besides the connection strength between the new concrete and the old concrete can be enhanced by the aid of the steel bars, and the connection strength between the new concrete and the old concrete can be further enhanced by arranging the rough surface on the surface of the prefabricated member. Correspondingly, when the surface of the ultra-high performance concrete needs to be ribbed, the concrete side template needs to be reserved with rib penetrating holes (through holes) for the reinforcing steel bars to penetrate through and comprises the template joint, and slurry leakage can be caused. Meanwhile, the ultra-high performance concrete can be bonded with the template after being cured, and the volume of the cured concrete expands, so that the demolding is difficult due to the factors, and the template can be easily damaged due to the fact that the mold needs to be strongly demolded by great working strength.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rapid and efficient finished UHPC precast slab T-shaped joint forming template.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model comprises a bottom die 31 and a vertical die 32, wherein the vertical die 32 is arranged on the periphery of the bottom die 31 in a longitudinally sealed and matched manner, the outer edge of the bottom die 31 is provided with a raised bottom die convex edge 312, the inner side of the vertical die 32 is provided with a groove matched with the bottom die convex edge 312 on the outer edge of the bottom die 31, the upper end of the vertical die 32 is provided with a rubber groove die 341, and the rubber groove die 341 comprises a rubber pressing plate 3411 and a supporting box frame 3412; the rubber pressure plate 3411 is provided with an arched long hole which comprises a semicircular groove 34111 and a rectangular groove 34112; the semicircular groove 34111 and the rectangular groove 34112 may form an arcuate elongated slot with each other.

The vertical mold 32 comprises a transverse vertical mold I321, a vertical mold I322, a transverse vertical mold II 323 and a vertical mold II 324 which are connected in a matched mode, grooves matched with a bottom mold convex edge 312 on the outer edge of a bottom mold 31 are respectively formed in the transverse vertical mold I321, the transverse vertical mold II 323, the vertical mold I322 and the vertical mold II 324, and the grooves of the transverse vertical mold I321, the transverse vertical mold II 323, the vertical mold I322 and the vertical mold II 324 are respectively installed on the bottom mold convex edge 312 on the outer edge of the bottom mold 31 in a matched mode.

The supporting box frame 3412 of the present invention is disposed above the rubber pressing plate 3411, and is connected to the vertical mold i 322 and the vertical mold ii 324.

The upper surface of the rectangular groove 34112 of the present invention is flush with the diametrical center line of the semicircular groove 34111

The periphery of the bottom die 31 is provided with a bottom die convex edge 312, and the width of the bottom die convex edge 312 is 2.0 mm-20.0 mm.

The rubber groove die 341 of the present invention is installed on the upper inner sides of the vertical die I322 and the vertical die II 324.

The utility model installs a bottom groove die on a die so as to produce a UHPC prefabricated bridge deck with a groove.

The spreading and expanding degree of the mixed material of UHPC concrete to be poured reaches 580-720 mm.

The utility model has the beneficial effects that: the bridge deck manufacturing method has high efficiency, can accurately separate the bridge deck from the mould at the optimal time, and does not damage the structure of the bridge deck; the method is not influenced by the environment of severe cold and hot summer or continuous rainy days of the construction site, and can be directly produced in a factory to finish direct installation on the construction site. It is mainly applied to the bridge deck precast slab process.

Drawings

FIG. 1 is a schematic view of the present invention on a mold;

FIG. 2 is a schematic view of the present invention on a mold;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic structural view of the present invention;

FIG. 5 is a schematic view of the present invention on a mold;

FIG. 6 is a schematic view of the present invention on a mold;

FIG. 7 is a schematic view of the mold construction of the present invention;

fig. 8 is a schematic structural diagram of the vertical mold of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Embodiment 1, referring to fig. 1 to 4, the present invention includes a bottom mold 31, and a vertical mold 32 installed on the periphery of the bottom mold 31 in a longitudinally sealed manner, and is characterized in that: the outer edge of the bottom die 31 is a raised bottom die convex edge 312, the inner side of the vertical die 32 is provided with a groove matched with the bottom die convex edge 312 on the outer edge of the bottom die 31, the upper end of the vertical die 32 is provided with a rubber groove die 341, and the rubber groove die 341 comprises a rubber pressing plate 3411 and a supporting box frame 3412; the rubber pressure plate 3411 is provided with an arched long hole which comprises a semicircular groove 34111 and a rectangular groove 34112; the semicircular groove 34111 and the rectangular groove 34112 may form an arcuate elongated slot with each other.

The supporting box frame 3412 of the present invention is disposed above the rubber pressing plate 3411, and is connected to the vertical mold i 322 and the vertical mold ii 324. The upper surface of the rectangular groove 34112 of the present invention is flush with the diametrical center line of the semicircular groove 34111

Embodiment 2, referring to fig. 1 to 4, a rubber slot die 341 of the present invention is installed at an upper inner portion of a vertical standing die i 322 and a vertical standing die ii 324, and the rest of the above embodiments.

In embodiment 3, referring to fig. 1 to 4, a bottom mold flange 312 is disposed around the bottom mold 31 of the present invention, and the width of the bottom mold flange 312 is 2.0mm to 20.0mm, which is the same as the above embodiments.

Embodiment 4, referring to fig. 1 to 4, the lower ends of one side of a vertical mold i 322 and one side of a vertical mold ii 324 of the present invention are respectively provided with a vertical horizontal groove i 3222 and a vertical horizontal groove ii 3242; two vertical grooves are formed in two ends of one side face of the transverse vertical die I321 and two ends of one side face of the transverse vertical die II 323 respectively; the lower ends of the transverse vertical groove I3211 and the transverse vertical groove II 3231 are respectively provided with a transverse horizontal groove I3212 and a transverse horizontal groove II 3232; the vertical horizontal grooves I3222, the vertical horizontal grooves II 3242, the horizontal grooves I3212 and the horizontal grooves II 3232 of the transverse vertical mold I321, the vertical mold I322, the transverse vertical mold II 323 and the vertical mold II 324 are respectively embedded with the bottom mold convex edge 312 at the periphery of the bottom mold 31 in a clearance manner, and the range of the embedding fit clearance is 0.5 mm-20.0 mm; the vertical formwork I convex edge 3221 and the vertical formwork II convex edge 3241 at the two ends of the vertical formwork I322 and the vertical formwork II 324 are embedded into the horizontal vertical groove I3211 and the horizontal vertical groove II 3231 of the horizontal formwork I321 and the horizontal formwork II 323 respectively, the depth of the embedded groove is 2.0 mm-20 mm, and the rest is the same as the embodiment.

In embodiment 5, referring to fig. 1 to 4, the upper plane of the bottom mold flange 312 around the bottom mold 31 of the present invention is respectively attached to the upper groove surfaces of the vertical horizontal groove i 3222 and the vertical horizontal groove ii 3242 to ensure the vertical positioning of the vertical mold, and the lower end sides of the horizontal vertical mold i 321, the vertical mold i 322, the horizontal vertical mold ii 323, and the vertical mold ii 324 are respectively attached to the vertical plane of the bottom mold connecting plate 313 of the bottom mold 1 and are fastened and connected by bolts.

Example 6, referring to fig. 1 to 4, in the present invention, a pre-fabricated steel bar net is first placed into the die system by using the die system, the rubber pressing plate 3411 is provided with arched long holes corresponding to the number of the longitudinal ribs of the template of the UHPC prefabricated slab, the semicircular groove 34111 is overlapped and tightly attached to the corresponding position steel bar of the UHPC prefabricated slab, and the diameter of the semicircular groove 34111 is greater than the nominal diameter of the corresponding steel bar by a difference of 0.5 to 1.5 mm; the upper surface of the rectangular groove 34112 is flush with the diameter center line of the semicircular groove 34111, and the lower surface of the rectangular groove 34112 is flush with the bottom surface of the T-shaped post-pouring joint groove of the UHPC precast slab. The rest is the same as the above embodiment.

Claims

1. A T type seam forming die of UHPC prefabricated plate, characterized by: the mold comprises a bottom mold (31) and a vertical mold (32), the periphery of the bottom mold (31) is vertically and hermetically matched with the vertical mold (32), the outer edge of the bottom mold (31) is provided with a raised bottom mold raised edge (312), the inner side of the vertical mold (32) is provided with a groove matched with the bottom mold raised edge (312) at the outer edge of the bottom mold (31), the upper end of the vertical mold (32) is provided with a rubber groove mold (341), and the rubber groove mold (341) comprises a rubber pressing plate (3411) and a supporting box frame (3412); an arched long strip hole is formed in the rubber pressing plate (3411), and comprises a semicircular groove (34111) and a rectangular groove (34112); the semicircular groove (34111) and the rectangular groove (34112) can mutually form an arched long slotted hole.

2. A T-shaped joint forming die for UHPC prefabricated panels according to claim 1, wherein: found mould (32) including the horizontal mould I (321), vertical mould I (322), horizontal mould II (323) and vertical mould II (324) that cooperate to connect, horizontal mould I (321), horizontal mould II (323), vertical mould I (322) and vertical mould II (324) of founding are provided with respectively with die block (31) outer fringe die block chimb (312) matched with recess, and the recess of horizontal mould I (321), horizontal mould II (323), vertical mould I (322) and vertical mould II (324) of founding cooperates respectively to install on die block (31) outer fringe die block chimb (312).

3. A T-shaped joint forming die for UHPC prefabricated panels according to claim 2, wherein: the supporting box frame (3412) is arranged above the rubber pressing plate (3411) and connected with the vertical die I (322) and the vertical die II (324).

4. A T-shaped joint forming die for UHPC prefabricated panels according to claim 2, wherein: the upper surface of the rectangular groove (34112) is flush with the diameter centerline of the semicircular groove (34111).