T-shaped joint forming mold for UHPC prefabricated slab

Abstract

A T-shaped joint forming die of a UHPC prefabricated plate belongs to a prefabricated plate die. It mainly solves the technical problems of low strength and complex construction of the existing bridge deck prefabricated plate. The technical scheme points are: the die comprises a bottom die and a vertical die, the vertical die is installed on the outer periphery of the bottom die in longitudinal sealing cooperation, the outer edge of the bottom die is a convex strip-shaped bottom die convex edge, the inner side of the vertical die is provided with a groove matched with the bottom die convex edge, the upper end of the vertical die is provided with a rubber groove die, and the rubber groove die comprises a rubber pressing plate and a support box frame; an arch-shaped long slot is arranged on the rubber pressing plate, and the arch-shaped long slot comprises a semicircular groove and a rectangular groove; the semicircular groove and the rectangular groove can form an arch-shaped long slot hole, the installation size is more accurate, the installation is more convenient, and the mutual sealing is more convenient. It is mainly applied to the prefabrication process of the bridge deck prefabricated plate.

Description

TECHNICAL FIELD

[0001] The application relates to a mold for prefabricated plates, in particular a T-shaped joint forming mold for UHPC prefabricated plates. BACKGROUND

[0002] The bridge deck directly bears the vehicle load and environmental action, and is the most directly affected component by overload, corrosion, fatigue and other adverse factors, so its working state will directly affect the durability and driving comfort of the main structure of the bridge. The orthotropic steel bridge deck and the ordinary concrete bridge deck are two main forms of bridge decks currently applied in bridge engineering. The ordinary concrete bridge deck can better adapt to asphalt concrete bridge pavement or cement pavement, and has better driving effect, but due to the low tensile strength of the ordinary concrete, the plate thickness is large, the structure self-weight is large, and it is difficult to adapt to the demand of large-span bridges, and is prone to cracking near the wet joint, negative bending moment area and cable anchorage area. The orthotropic steel bridge deck has the advantages of light self-weight, large ultimate bearing capacity and short construction period, and is widely applied in large-span bridges, but due to the low stiffness of the steel bridge deck, poor adhesion and deformation coordination with the asphalt concrete, and other reasons, the orthotropic steel bridge deck is prone to fatigue cracking and pavement damage after being in operation for many years.

[0003] The ultra-high performance concrete (i.e. UHPC) has the advantages of high elastic modulus, high compressive and tensile strength and good creep characteristics, can reduce the structure size, reduce the structure self-weight, improve the load resistance effectiveness of the structure and increase the spanning capacity. Therefore, the UHPC bridge deck developed based on the performance of the ultra-high performance concrete can avoid the problems of fatigue cracking and pavement damage of the orthotropic steel bridge deck, can reduce the structure self-weight, adapt to the demand of large-span bridges, and the ultra-high performance concrete with excellent tensile performance can solve the problem of easy cracking of the ordinary concrete bridge deck and has good durability. SUMMARY

[0004] The purpose of the application is to provide a T-shaped joint forming mold for UHPC prefabricated plates which is fast and has high finished product efficiency.

[0005] The technical scheme adopted by the application to solve the technical problem is: the application comprises a bottom mold 31 and a vertical mold 32, the vertical mold 32 is installed on the outer periphery of the bottom mold 31 in a longitudinally sealed manner, the outer edge of the bottom mold 31 is a convex strip-shaped bottom mold convex edge 312, a groove matched with the bottom mold convex edge 312 of the outer edge of the bottom mold 31 is arranged on the inner side of the vertical mold 32, a rubber groove mold 341 is arranged on the upper end of the vertical mold 32, and the rubber groove mold 341 comprises a rubber pressing plate 3411 and a support box frame 3412; an arch-shaped long slot hole is arranged on the rubber pressing plate 3411, and the arch-shaped long slot hole comprises a semicircular groove 34111 and a rectangular groove 34112; the semicircular groove 34111 and the rectangular groove 34112 can form an arch-shaped long slot hole.

[0006] The forming 32 of the present application comprises a transverse forming I 321, a vertical forming I 322, a transverse forming II 323 and a vertical forming II 324 connected in cooperation, the transverse forming I 321, the transverse forming II 323, the vertical forming I 322 and the vertical forming II 324 are respectively provided with a groove matched with the bottom die flange 312 of the outer edge of the bottom die 31, and the grooves of the transverse forming I 321, the transverse forming II 323, the vertical forming I 322 and the vertical forming II 324 are respectively matched and installed on the bottom die flange 312 of the outer edge of the bottom die 31.

[0007] The support box frame 3412 of the present application is arranged above the rubber pressing plate 3411 and is connected with the vertical forming I 322 and the vertical forming II 324.

[0008] The upper surface of the rectangular groove 34112 of the present application is flush with the diameter center line of the semicircular groove 34111

[0009] The bottom die 31 of the present application is provided with a bottom die flange 312 around, and the width of the bottom die flange 312 is 2.0mm-20.0mm.

[0010] The rubber groove die 341 of the present application is installed on the inner side of the vertical forming I 322 and the vertical forming II 324.

[0011] The present application installs a plate bottom groove die on the mold, so as to produce a UHPC prefabricated bridge deck with grooves.

[0012] The present application can reach 580-720mm in the paving and spreading degree of the UHPC concrete mixing material to be poured.

[0013] The present application has the advantages that: the bridge deck panel manufacturing efficiency is high, the best separation time of the bridge deck panel and the mold can be accurately controlled, the structure of the bridge deck panel is not damaged, the influence of the severe cold, hot or rainy environment on the construction site is avoided, the bridge deck panel can be directly produced in the factory and directly installed on the construction site, and the present application is mainly applied to the bridge deck prefabricated panel process. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic diagram of the present application on the mold;

[0015] Figure 2 It is a structure schematic diagram of the present application on the mold;

[0016] Figure 3 It is a structure schematic diagram of the present application;

[0017] Figure 4 It is a structure schematic diagram of the present application;

[0018] Figure 5 It is a structure schematic diagram of the present application on the mold;

[0019] Figure 6 is the structural schematic diagram of the mold of the present application;

[0020] Figure 7 is the structural schematic diagram of the mold of the present application;

[0021] Figure 8 is the structural schematic diagram of the mold of the present application. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with the drawings and examples.

[0023] Example 1, refer to Figures 1 to 4 The present application comprises a bottom mold 31, a vertical mold 32, the bottom mold 31 is installed with the vertical mold 32 in a longitudinally sealing fit, and is characterized in that: the outer edge of the bottom mold 31 is a convex strip-shaped bottom mold convex edge 312, the inner side of the vertical mold 32 is provided with a groove matched with the bottom mold convex edge 312 of the outer edge of the bottom mold 31, the upper end of the vertical mold 32 is provided with a rubber groove mold 341, the rubber groove mold 341 comprises a rubber pressing plate 3411 and a support box frame 3412, the rubber pressing plate 3411 is provided with an arch-shaped long hole, the arch-shaped long hole comprises a semicircular groove 34111 and a rectangular groove 34112, and the semicircular groove 34111 and the rectangular groove 34112 can form an arch-shaped long slot hole.

[0024] The vertical mold 32 of the present application comprises a transverse vertical mold I 321, a vertical mold I 322, a transverse vertical mold II 323 and a vertical mold II 324 connected in a matched manner, the transverse vertical mold I 321, the transverse vertical mold II 323, the vertical mold I 322 and the vertical mold II 324 are respectively provided with a groove matched with the bottom mold convex edge 312 of the outer edge of the bottom mold 31, and the grooves of the transverse vertical mold I 321, the transverse vertical mold II 323, the vertical mold I 322 and the vertical mold II 324 are respectively matched and installed on the bottom mold convex edge 312 of the outer edge of the bottom mold 31.

[0025] The support box frame 3412 of the present application is arranged above the rubber pressing plate 3411 and connected with the vertical mold I 322 and the vertical mold II 324, and the upper surface of the rectangular groove 34112 is flush with the diameter center line of the semicircular groove 34111.

[0026] The bottom mold 31 of the present application is provided with a bottom mold convex edge 312 around the periphery, and the width of the bottom mold convex edge 312 is 2.0mm-20.0mm.

[0027] Example 2, refer to Figures 1 to 4 The rubber groove mold 341 of the present application is installed on the inner side of the upper part of the vertical mold I 322 and the vertical mold II 324, and the rest is the same as the above-mentioned example.

[0028] Embodiment 3, see Figures 1 to 4 The bottom die 31 of the present application is provided with a bottom die flange 312 around the four sides, the width of which is 2.0mm-20.0mm, and the rest is the same as the above-mentioned embodiment.

[0029] Embodiment 4, see Figures 1 to 4 The vertical formwork I 322 and the vertical formwork II 324 of the present application are respectively provided with a vertical horizontal groove I 3222 and a vertical horizontal groove II 3242 at the lower end of one side; the lateral formwork I 321 and the lateral formwork II 323 are respectively provided with two vertical grooves at both ends of one side; the lateral vertical groove I 3211 and the lateral vertical groove II 3231, and the lateral formwork I 321 and the lateral formwork II 323 are respectively provided with a lateral horizontal groove I 3212 and a lateral horizontal groove II 3232 at the lower end; the vertical horizontal groove I 3222, the vertical horizontal groove II 3242, the lateral horizontal groove I 3212 and the lateral horizontal groove II 3232 of the lateral formwork I 321, the vertical formwork I 322, the lateral formwork II 323 and the vertical formwork II 324 are respectively installed in the gap of the bottom die flange 312 around the four sides of the bottom die 31, and the gap of the inlaid fit is 0.5mm-20.0mm; the vertical formwork I flange 3221 and the vertical formwork II flange 3241 at both ends of the vertical formwork I 322 and the vertical formwork II 324 are respectively embedded in the lateral vertical groove I 3211 and the lateral vertical groove II 3231 of the lateral formwork I 321 and the lateral formwork II 323, and the embedded depth in the groove is 2.0mm-20mm, and the rest is the same as the above-mentioned embodiment.

[0030] Embodiment 5, see Figures 1 to 4 The upper plane of the bottom die flange 312 around the four sides of the bottom die 31 of the present application is respectively installed in close contact with the upper groove surface of the vertical horizontal groove I 3222 and the vertical horizontal groove II 3242 to ensure the vertical positioning of the formwork, and the lower end side of the lateral formwork I 321, the vertical formwork I 322, the lateral formwork II 323 and the vertical formwork II 324 is in close contact with the vertical plane of the bottom die connecting plate 313 of the bottom die 1 and is connected by bolt fastening, and the rest is the same as the above-mentioned embodiment.

[0031] Embodiment 6, see Figures 1 to 4 In the mold system of the present application, the steel bar net prepared in advance is first placed in the mold system, the rubber pressing plate 3411 is provided with an arch-shaped long hole consistent with the longitudinal rib steel bar of the UHPC prefabricated plate template, the semicircular groove 34111 of the rubber pressing plate is in close contact with the corresponding position steel bar of the UHPC prefabricated plate, and the diameter size of the semicircular groove 34111 is greater than the nominal diameter of the corresponding steel bar by 0.5-1.5mm; 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-cast wet joint groove of the UHPC prefabricated plate.

Claims

1. A T-joint forming mold for UHPC precast panels, characterized in that: The mold includes a bottom mold (31) and a vertical mold (32). The bottom mold (31) is longitudinally sealed to the outer periphery of the vertical mold (32). The outer edge of the bottom mold (31) is a raised strip-shaped bottom mold protrusion (312). The inner side of the vertical mold (32) is provided with a groove that matches the bottom mold protrusion (312) on the outer edge of the bottom mold (31). The upper end of the vertical mold (32) is provided with a rubber groove mold (341). The rubber groove mold (341) includes a rubber pressure plate (3411) and a support box frame (3412). The rubber pressure plate (3411) is provided with an arch-shaped elongated hole. The arch-shaped elongated hole includes a semi-circular groove (34111) and a rectangular groove (34112). The semi-circular groove (34111) and the rectangular groove (34112) can form an arch-shaped elongated groove hole. The mold (32) includes a horizontal mold I (321), a vertical mold I (322), a horizontal mold II (323), and a vertical mold II (324) that are connected to each other. The horizontal mold I (321), the horizontal mold II (323), the vertical mold I (322), and the vertical mold II (324) are respectively provided with grooves that cooperate with the bottom mold protrusion (312) on the outer edge of the bottom mold (31). The grooves of the horizontal mold I (321), the horizontal mold II (323), the vertical mold I (322), and the vertical mold II (324) are respectively installed on the bottom mold protrusion (312) on the outer edge of the bottom mold (31). The support box frame (3412) is set above the rubber pressure plate (3411) and connected to the vertical mold I (322) and the vertical mold II (324).

2. The T-joint forming mold for UHPC precast panels according to claim 1, characterized in that: The upper surface of the rectangular groove (34112) is flush with the center line of the diameter of the semi-circular groove (34111).

Images