CN111172874A - Construction method of bridge panel and connecting device thereof - Google Patents

Abstract

The invention is applicable to the technical field of bridge construction, and provides a construction method of a bridge panel and a connecting device thereof. The invention provides a construction method of a bridge panel, which comprises the following steps: the method comprises the steps of arranging a main beam comprising an upper flange, arranging a precast slab comprising a channel steel, wherein the channel steel is provided with an overhanging part protruding out of a body of the precast slab, and fixedly connecting the overhanging part of the channel steel with the upper flange, and the precast slab and the upper flange form a bottom plate of the bridge panel. The precast slab comprising the channel steel and the upper flange fixedly connected with the channel steel and the main beam are arranged, so that support is provided for the precast slab; and need not to set up the outside support piece except prefabricated plate and girder, avoided the influence to the convenient of underbridge traffic.

Description

Construction method of bridge panel and connecting device thereof

Technical Field

The invention belongs to the technical field of bridge construction, and particularly relates to a construction method of a bridge panel and a connecting device thereof.

Background

The composite structure bridge mainly comprises two parts, namely a main beam and an overhanging bridge panel, when the overhanging bridge panel is built, a template is generally required to be arranged on the main beam for supporting, and then concrete is cast on the template in situ to form the overhanging bridge panel. Under the condition that the formwork engineering quantity is great or the main beam can not completely support the formwork, a full framing scaffold is usually required to be arranged, the construction process of erecting the scaffold in the horizontal direction is required to be fully paved, the construction period is long due to the fact that the density of the scaffold is relatively high, and convenience of traffic under a bridge is influenced.

Disclosure of Invention

In view of this, the embodiments of the present invention provide a bridge deck construction method and a connection device thereof, so as to solve the technical problems that the construction period of a composite bridge is long and traffic convenience is affected.

In order to solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:

the embodiment of the invention provides a construction method, which is applied to a bridge panel and comprises the following steps:

arranging a main beam, wherein the main beam comprises an upper flange; providing a precast slab, wherein the precast slab comprises a body and a channel steel, and the channel steel comprises a built-in part positioned in the body and an overhanging part protruding from the side surface of the body; abutting the side face of the body of the precast slab against the side face of the upper flange, wherein the overhanging part of the channel steel is placed on the upper surface of the upper flange; the outer extending part of the channel steel and the upper flange are fixedly connected, and the precast slab and the upper flange form a bottom plate of the bridge panel; and pouring concrete on the surface of the bottom plate, and forming the bridge panel after the concrete is solidified.

Furthermore, the upper flange is provided with a first screw hole which penetrates through the upper flange along the vertical direction.

Furthermore, a second screw hole penetrating through the overhanging part along the vertical direction is formed in the overhanging part of the channel steel, and the second screw hole can be communicated with the first screw hole.

Further, bolts are arranged and penetrate through the first screw holes and the second screw holes to be fixedly connected with the overhanging parts of the channel steel and the upper flanges; the upper surface of the upper flange and the upper surface of the precast slab body form the surface of the bottom plate of the bridge deck.

Furthermore, bent ribs protruding from the upper surface of the body are arranged on the body of the prefabricated slab.

The embodiment of the present invention further provides a connecting device for bridge panels, where the connecting device for bridge panels includes: a main beam comprising an upper flange; the prefabricated slab comprises a body and a channel, the channel comprises a built-in part positioned in the body and an overhanging part protruding from the side face of the body, the side face of the body of the prefabricated slab abuts against the side face of the upper flange, and the overhanging part of the channel is placed on the upper surface of the upper flange; and the connecting part is fixedly connected with the overhanging part of the channel steel and the upper flange, and the precast slab and the upper flange form a bottom plate of the bridge panel.

Furthermore, a first screw hole penetrating through the upper flange along the vertical direction is formed in the upper flange, and the connecting part penetrates through the first screw hole to be connected with the outward extending part of the channel steel and the upper flange.

Furthermore, the overhanging part of the channel steel is provided with a second screw hole which penetrates through the overhanging part along the vertical direction, the second screw hole can be communicated with the first screw hole, and the connecting part penetrates through the first screw hole and the second screw hole to be connected with the overhanging part of the channel steel and the upper flange.

Furthermore, the connecting part of the precast slab is a bolt, the bolt passes through the first screw hole and the second screw hole to be fixedly connected with the overhanging part of the channel steel and the upper flange, and the upper surface of the upper flange and the upper surface of the precast slab body form the surface of the bottom plate of the bridge deck.

Further, the upper surface of the body of prefabricated plate is provided with curved muscle, curved muscle includes: an outer convex portion provided above the body of the prefabricated panel; and the embedded part is arranged in the body of the precast slab.

The construction method of the bridge panel comprises the steps of arranging a main beam comprising an upper flange, arranging a precast slab comprising a channel steel, wherein the channel steel is provided with an overhanging part protruding out of a body of the precast slab, and fixedly connecting the overhanging part and the upper flange of the channel steel, and the precast slab and the upper flange form a bottom plate of the bridge panel. The precast slab comprising the channel steel and the upper flange fixedly connected with the channel steel and the main beam are arranged, so that support is provided for the precast slab; and need not to set up the outside support piece except prefabricated plate and girder, avoided the influence to the convenient of underbridge traffic.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic flow chart of a construction method of a bridge deck according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of step S104 in FIG. 1;

FIG. 3 is a schematic flow chart of another bridge deck construction method according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a main beam of the connecting device for bridge deck according to the present invention;

fig. 5 is a schematic structural view illustrating a bridge deck connecting apparatus according to an embodiment of the present invention after prefabricated panels and connecting members are installed therein;

FIG. 6 is a schematic structural diagram of a bridge deck connection device according to an embodiment of the present invention after concrete is poured therein;

fig. 7 is a schematic structural diagram of a prefabricated slab in a connecting device for bridge deck panels according to an embodiment of the present invention.

Description of reference numerals:

10-bridge deck slab; 11-a main beam; 111-top flange; 12-precast slab; 121-precast slab body; 122-channel steel; 1221-built-in section of channel steel; 1222-channel overhang; 13-a bolt; 14-bending the rib; 141-a convex portion; 142-embedded part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

In a specific embodiment, the construction method of the bridge panel and the connecting device thereof can be applied to the construction process of various small, medium and large bridges, for example, the construction method and the connecting device can be used for river-crossing bridges, river-crossing bridges and pedestrian overpasses in urban transportation hubs; the construction method of the bridge deck and the connecting device thereof can also be applied to the construction process of building construction, for example, the construction method and the connecting device can be used for constructing overhanging floor sections of a building. The construction method and the connecting device will be described below by way of example in the process of constructing a bridge deck of a pedestrian bridge.

As shown in fig. 1, a construction method of a bridge deck provided in an embodiment of the present invention includes the following steps:

s101, arranging a main beam 11 which comprises an upper flange 111.

Specifically, as shown in fig. 4, the main beam 11 may be a concrete main beam, a steel-concrete mixed main beam, or a laminated main beam, and may have other shapes such as "i" shape, "T" shape, and "7" shape, and the upper flange 111 of the main beam 11 may be a concrete plane extending in the horizontal direction, and the lower side of the main beam is supported by the web. The bottom of the main beam 11 may be fixed by concrete or other fixed connection to a foundation, which may be a pier or bridge constructed of concrete or stone, or the entire ground.

S102, a precast slab 12 is arranged, the precast slab comprises a body 121 and a channel 122, and the channel 122 comprises a built-in part 1221 positioned inside the body 121 and an overhanging part 1222 protruding from the side surface of the body 121.

The channel 122 may be provided in the slab body 121 before the main beam 11 is installed and the slab body 121 is formed, or may be provided before the main beam 11 is installed, so that when the slab body 121 is formed, a part of the channel 122 is provided in the slab body and another part is provided outside the channel to form the slab 12.

Alternatively, as shown in fig. 5, when the concrete of the slab body 121 is not completely solidified during the manufacture of the slab body 121, the channel 122 is placed in the slab body 121, and the concrete around the placed position is compacted, the overhanging portion 1222 of the channel 122 protrudes from one side of the slab body 121, the specific length of the overhanging portion 1222 can be adjusted according to the length of the upper flange 111 and the actual engineering requirements, the length of the inner portion 1221 (shown in fig. 7) of the channel 122 should be equal to the length of the slab body 121, so as to provide good support for the subsequent bridge deck, and after the concrete of the slab body 121 is completely solidified, the slab 12 with the channel 122 is obtained. The built-in portion 1221 is located inside the prefabricated panel body 121, i.e., the built-in portion does not protrude outside the surface of the prefabricated panel body 121 in either direction. The overhanging portion 1222 protrudes outside the side surface of the body 121, and the side surface of the body 121 refers to a surface perpendicular to the longitudinal direction of the body 121, and the longitudinal direction of the body 121 refers to a direction extending in the direction with the largest dimension. The number of the channel steels 122 may be multiple, and the channel steels 122 are uniformly arranged in the precast slab body 121, and the channel steels 122 may be rigid materials with a section shape of a groove or other shapes, where it should be noted that the rigid materials are materials that do not deform or deform a little after being stressed. Under the condition of meeting the engineering requirements, the channel steel 122 can be light channel steel, so that the engineering construction is facilitated, and the construction time is saved. The built-in portion 1221 provided inside the prefabricated panel body 121, the overhanging portion 1222 protruding from the prefabricated panel body 121, and the prefabricated panel body 121 together constitute the prefabricated panel 12, improving the supporting capability of the prefabricated panel 12.

And S103, abutting the side surface of the body 121 of the precast slab 12 against the side surface of the upper flange 111, and placing the overhanging part 1222 of the channel steel 122 on the upper surface of the upper flange 111.

Specifically, as shown in fig. 5, after the precast panels 12 are manufactured and the main beams 11 are arranged, the overhanging portions 1222 of the channel 122 may be placed on the upper surfaces of the upper flanges while the sides of the body 121 of the precast panels 12 abut against the sides of the upper flanges. The side of the body 121 from which the overhang portion 1222 protrudes is in abutting contact with the side of the upper flange 111, the side of the upper flange 111 being perpendicular to the upper surface of the upper flange 111. The side of the body 121 abuts against the side of the upper flange 111, so that there is no significant gap between the body 121 and the upper flange 111, and thus the bottom plate of the bridge deck 10 can be formed after the channel steel 122 and the upper flange 111 are fixed, and the bottom plate cannot be formed due to a connection gap between the upper flange 111 and the body 121. The overhanging portion 1222 of the channel 122 placed on the upper surface of the upper flange 111 can be used as a connecting portion between the precast slab body 121 and the upper flange 111, and can also provide a partial supporting function for the subsequent bridge deck, thereby improving the reliability of the bridge.

S104, fixedly connecting an overhanging part 1222 of the channel steel 122 and the upper flange 111, wherein the precast slab 12 and the upper flange 111 form a bottom plate of the bridge deck 10.

After the precast panel 12 is put in place so that the side of the body 121 of the precast panel 12 abuts against the side of the upper flange 111 and the overhang 1222 of the channel 122 is placed on the upper surface of the upper flange 111, the overhang 1222 of the channel 122 and the upper flange 111 can be connected.

Specifically, as shown in fig. 5, a connecting member is provided at a position where the overhanging portion 1222 of the channel 122 is placed on the upper surface of the upper flange 111, and these members are fixedly connected, and the fixing connection may be performed by using a bolt, a pin, a bolt, or the like, or may be performed by using a welding method to fix the overhanging portion 1222 of the channel 122 on the upper surface of the upper flange 111, and fix the position of the precast slab 12 so that the precast slab and the upper flange 111 form the bottom plate of the bridge deck 10.

And S105, pouring concrete on the surface of the bottom plate, and forming the bridge panel after the concrete is solidified.

Specifically, concrete is poured on the upper surface of the bottom plate formed by the combination of the precast slabs 12 and the upper flange 111, and the upper surface formed by pouring the concrete is kept substantially horizontal, so as to ensure that the upper surface of the formed bridge deck 10 is substantially horizontal. The main beam 11, the precast slab 12, and the bridge deck 10 formed of concrete can be firmly fixed by pouring concrete, so that the three are firmly integrated.

It should be noted that, in the actual construction process of the bridge panel 10, in the drawing as shown in fig. 5, the left sides of the main beams 11 are provided with other main beams side by side, and precast slabs are erected between the main beams to form a simple support structure for pouring concrete and forming the bridge panel 10 after solidification, so that the left part of the upper flange 111 of the main beam 11 in the drawing is provided with precast slabs to form a pouring bottom plate of the bridge panel 10, and since the simple support structure formed by two adjacent main beams and the precast slabs erected thereon is not relevant to the present invention, it is omitted and a cross-sectional line is used instead, as shown in fig. 6.

Optionally, before the concrete is poured, impurities such as mud and garbage on the bottom plate are removed, and the bottom plate is kept clean. When concrete is poured on the bottom plate, the concrete can be pushed forward layer by layer along the bottom plate by adopting a 'slurry driving method', and the vibrator is used for compacting along the pouring direction. And if concrete is required to be poured at intervals, the concrete can be continuously poured when the compressive strength of the poured concrete meets a certain strength, before the concrete is continuously poured, roughening the surface of the poured concrete, removing floating stones, washing the concrete with water, pouring a layer of cement paste, continuously pouring the concrete, and simultaneously performing compaction operation to tightly combine the new concrete and the old concrete. After the concrete is poured, a plastic film is adopted to cover and water the concrete within 12 hours, the watering times and the interval time are required to keep the concrete in a sufficient humid state, the cast-in-place concrete is cured and solidified to form the bridge panel 10, as shown in fig. 6, and the whole construction process of the bridge panel is completed.

According to the construction method, the main beam comprising the upper flange is arranged, the precast slab comprising the channel steel is arranged, the channel steel is provided with the overhanging part protruding out of the body of the precast slab, the overhanging part and the upper flange of the channel steel are fixedly connected, the precast slab is fixed on the main beam, and the precast slab and the upper flange form the bottom plate of the bridge panel. The construction method has the advantages that the adopted structure is simple, the construction is convenient, and the support piece does not need to be disassembled, so that the time is saved; and need not to set up the outside support piece except prefabricated plate and girder, avoided the influence to the convenient of underbridge traffic.

Optionally, in some embodiments, based on fig. 1, step S101 in fig. 1 includes:

the upper flange 111 is provided with a first screw hole which penetrates through the upper flange 111 along the vertical direction.

In the process of manufacturing the main beam 11, or after the main beam 11 is manufactured, a first screw hole may be formed in the upper flange 111 of the main beam 11.

Specifically, as shown in fig. 5, the number of the first screw holes may be multiple, and the specific opening position of the first screw hole on the upper flange 111 should meet the requirements of the spacing, the aperture size and the position specified on the engineering construction design drawing. Alternatively, the first screw holes may be through holes penetrating through the upper flange 111 in the vertical direction, or blind holes opened in the upper flange 111 in the vertical direction, so that the connecting members may pass through the first screw holes to connect the overhanging portion 1222 of the channel 122, thereby more firmly disposing the prefabricated panels 12 on the main beam 11.

Optionally, in some embodiments, based on fig. 1, step S102 in fig. 1 includes:

a second screw hole is formed in the overhanging portion 1222 of the channel 122 to penetrate through the overhanging portion 1222 in the vertical direction, and the second screw hole may communicate with the first screw hole. The operation of forming the second screw holes in the overhanging portions 1222 of the channel steel 122 may be performed after the prefabricated panel 12 is manufactured, or may be performed on the channel steel 122 before the prefabricated panel 12 is manufactured.

Specifically, as shown in fig. 5, the second screw holes may be through holes that penetrate through the overhanging portion 1222 of the channel 122 in the vertical direction, and the number of the second screw holes formed in the overhanging portion 1222 of the channel 122 may be multiple, and the specific positions of the second screw holes correspond to the positions of the first screw holes formed in the upper flange 111, so that after the prefabricated panel 12 is placed on the main beam 11, the first screw holes and the second screw holes may be communicated in the vertical direction, so that the connecting member may pass through the first screw holes and the second screw holes at the same time, and the prefabricated panel 12 is more firmly disposed on the main beam 11.

Optionally, in some embodiments, as shown in fig. 2, based on fig. 1, step S104 in fig. 1 includes:

S104A, arranging a bolt 13, wherein the bolt 13 penetrates through the first screw hole and the second screw hole to fixedly connect the overhanging portion 1222 of the channel steel 122 and the upper flange 111.

Specifically, as shown in fig. 5, the number of the bolts 13 may be plural, and the bolts are respectively inserted through the first bolt holes and the second bolt holes to jointly connect the overhanging portion 1222 of the channel 122 and the upper flange 111, so as to firmly fix the prefabricated panels 12 to the main beam 11. The bolt 13 may include other components such as a nut, a screw rod, a washer, and optionally, the nut in the bolt 13 may be a self-locking nut, so as to avoid the self-loosening of the nut caused by the vibration of the bridge, which may result in the damage to the bridge.

S104B, the upper surface of the upper flange 111 and the upper surface of the body 121 of the prefabricated panel 12 form the surface of the bottom panel of the bridge deck 10.

Specifically, as shown in fig. 5, the length of the overhanging portion 1222 of the channel 122 disposed on the upper surface portion of the upper flange 111 can be adjusted according to the actual engineering requirement, so as to form the bottom plate of the bridge deck 10 meeting the engineering requirement.

Optionally, in some embodiments, as shown in fig. 3, the construction method further includes:

S102B, arranging a bent rib 14 protruding from the upper surface of the body 121 on the body 121 of the prefabricated panel 12.

The bending ribs 14 can be arranged on the precast slab body 121 before the precast slab 12 is formed after the main beam 11 is arranged, or can be arranged before the main beam 11 is arranged, so that the precast slab 12 is formed with the bending ribs 14 protruding from the upper surface of the precast slab body 121.

Optionally, as shown in fig. 7, before the precast slab body 121 is manufactured, the steel bars are bent to have a certain radian at normal temperature to form the bent ribs 14, when the concrete of the precast slab body 121 is not yet completely solidified, two end portions 142 of the bent ribs 14 are inserted into the concrete of the precast slab body 121, and the concrete around the inserted position is compacted, specifically, the embedded portions of the bent ribs 14 can be adjusted according to the thickness of the precast slab body 121 and actual engineering requirements, and after the concrete of the precast slab body 121 is completely solidified, the precast slab with the bent ribs 14 is obtained. The bent rib 14 may be a metal member, and when concrete is poured on the upper surface of the precast slab 12, the middle portion of the bent rib 14 protrudes from the upper surface of the precast slab 12 to form an outward protruding portion 141, and the two end portions are inserted into the concrete to form an embedded portion 142, so as to improve the bonding strength between the concrete and the precast slab body 121. In addition, the built-in portion 1221 of the channel steel is further provided in the precast slab body 121, thereby improving the overall reliability of the bridge.

As shown in fig. 6, an embodiment of the present invention further provides a connection device for a bridge deck, where the connection device includes: the prefabricated slab comprises a main beam 11, prefabricated slabs 12 and connecting parts, wherein the connecting parts fix the prefabricated slabs 12 on the main beam 11.

Wherein the main beam 11 comprises an upper flange 111. Specifically, the main beam 11 may be a concrete main beam, a steel-concrete mixed main beam, or a laminated main beam, and may have other shapes such as "i" shape, "T" shape, and "7", and the upper flange 111 of the main beam 11 may be a flat plate extending in the horizontal direction, and the lower side of the flat plate is supported by the web. The bottom of the main beam 11 may be fixed by concrete or other fixed connection to a foundation, which may be a pier or bridge constructed of concrete or stone, or the entire ground.

The precast slab 12 includes a body 121 and a channel 122, the channel 122 includes a built-in portion 1221 (shown in fig. 7) inside the body 121 and an overhanging portion 1222 protruding from a side surface of the body, the side surface of the body 121 of the precast slab 12 abuts against a side surface of the upper flange 111, and the overhanging portion 1222 of the channel 122 is placed on an upper surface of the upper flange 111.

Specifically, as shown in fig. 6, the overhanging portion 1222 of the channel 122 protrudes from one side of the slab body 121, and the specific length thereof can be adjusted according to the length of the upper flange 111 and the actual engineering requirements, while the length of the embedded portion 1221 (shown in fig. 7) of the channel 122 should be equal to the length of the slab body 121, so as to provide good support for the subsequent bridge deck. The number of the channel steels 122 may be multiple, the channel steels are uniformly arranged in the precast slab body 121, the channel steels 122 may be rigid materials with a groove-shaped cross section or other shapes, and it should be noted that the rigid materials are materials which do not deform or deform a little after being stressed. Under the condition of meeting the engineering requirements, the channel steel 122 can be light channel steel, so that the engineering construction is facilitated, and the construction time is saved. The built-in portion 1221 provided inside the prefabricated panel body 121, the overhanging portion 1222 protruding from the prefabricated panel body 121, and the prefabricated panel body 121 together constitute the prefabricated panel 12, and improve the supporting capability of the prefabricated panel 12.

The connecting member is fixedly connected to the overhanging portion 1222 of the channel 122 and the upper flange 111, and the precast slab 122 and the upper flange 111 form a bottom plate of the bridge deck 10. Specifically, the overhanging portion 1222 of the channel 122 is placed on the upper surface of the upper flange 111 to provide a connecting member, and the connecting member is fixedly connected to the upper surface of the upper flange 111 by using a bolt, a pin, a bolt, or the like, or by using a welding method to fix the overhanging portion 1222 of the channel 122 on the upper surface of the upper flange 111, and the position of the precast slab 12 is fixed so that the precast slab and the upper flange 111 form the bottom plate of the bridge deck 10.

The prefabricated slab is fixed on the main beam by arranging the main beam comprising the upper flange and the prefabricated slab comprising the channel steel, wherein the channel steel is provided with an overhanging part which protrudes out of the body of the prefabricated slab, the overhanging part and the upper flange of the channel steel are fixedly connected, and the prefabricated slab and the upper flange form a bottom plate of the bridge panel. The connecting device of the bridge panel is simple in structure, does not need to be provided with external supporting pieces except the precast slab and the main beam, saves construction time, and avoids influence on convenience of transportation under the bridge.

Optionally, as shown in fig. 6, a first screw hole penetrating through the upper flange 111 in the vertical direction is formed in the upper flange 111, and the connecting member passes through the first screw hole to connect the overhanging portion 1222 of the channel 122 and the upper flange 111. Specifically, the number of the first screw holes can be multiple, and the specific arrangement positions of the first screw holes on the upper flange 11 meet the requirements of the interval, the aperture size and the position specified on the engineering construction design drawing. Alternatively, the first screw holes may be through holes penetrating through the upper flange 111 in the vertical direction, or blind holes opened in the upper flange 111 in the vertical direction, so that the connecting members may pass through the first screw holes to connect the overhanging portion 1222 of the channel 122, thereby more firmly disposing the prefabricated panels 12 on the main beam 11.

Optionally, as shown in fig. 6, the overhanging portion 1222 of the channel 122 is provided with a second screw hole penetrating through the overhanging portion 1222 in the vertical direction, the second screw hole may communicate with the first screw hole, and the connecting member passes through the first screw hole and the second screw hole to connect the overhanging portion 1222 of the channel 122 and the upper flange 111. Specifically, the second screw holes may be through holes that penetrate through the overhanging portion 1222 of the channel-section 122 in the vertical direction, the number of the second screw holes formed in the overhanging portion 1222 of the channel-section 122 may be multiple, and the specific positions of the second screw holes correspond to the positions of the first screw holes formed in the upper flange 111, so that after the prefabricated plate 12 is placed on the main beam 11, the first screw holes and the second screw holes may be communicated in the vertical direction, so that the connecting member may pass through the first screw holes and the second screw holes at the same time, and the prefabricated plate 12 is more firmly disposed on the main beam 11.

Alternatively, as shown in fig. 6, the connecting member of the precast slab 12 is a bolt 13, the bolt 13 passes through the first and second bolt holes to fixedly connect the overhanging portion 1222 of the channel 122 and the upper flange 111, and the upper surface of the upper flange 111 and the upper surface of the body 121 of the precast slab 12 form the surface of the bottom plate of the bridge deck 10. Specifically, the bolts 13 may be provided in plural numbers, and each of the bolts passes through the first and second bolt holes to connect the overhanging portion 1222 of the channel section 122 and the upper flange 111, so as to firmly fix the prefabricated panels 12 to the main beam 11. The bolt 13 may include other components such as a nut, a screw rod, a washer, and optionally, the nut in the bolt 13 may be a self-locking nut, so as to avoid the self-loosening of the nut caused by the vibration of the bridge, which may result in the damage to the bridge. Meanwhile, the length of the overhanging portion 1222 of the channel 122 disposed on the upper surface portion of the upper flange 111 can also be adjusted according to the actual engineering requirement, so as to form the bottom plate of the bridge deck 10 meeting the engineering requirement.

Optionally, as shown in fig. 7, the upper surface of the precast slab body 121 is provided with a bent rib 14, and the bent rib 14 includes: an outward convex portion 141 provided above the precast panel body 121; and the embedded part 142 is arranged in the precast slab body 121. Specifically, the bent ribs 14 may be distributed on the upper surface of the prefabricated slab body 121 in an array manner, and the specific distribution distance between two adjacent bent ribs 14 should meet the requirement of construction strength. The bent ribs 14 at different positions on the precast slab body 121 can be specifically adjusted in the distribution density of the bent ribs 14, the diameter of the bent ribs 14, or the height of the outer convex portions 141 and the embedded depth of the embedded portions 142 of the bent ribs 14 according to the actual required bonding strength between the precast slab 12 and the bridge deck 10. The bent ribs 14 are provided on the precast slab body 121, so that the bonding strength between the bridge deck 10 and the precast slab 12 can be improved, and the built-in portion 1221 of the channel steel is further provided in the precast slab body 121, thereby improving the overall reliability of the bridge.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A construction method of a bridge deck is characterized by comprising the following steps:

arranging a main beam, wherein the main beam comprises an upper flange;

providing a precast slab, wherein the precast slab comprises a body and a channel steel, and the channel steel comprises a built-in part positioned in the body and an overhanging part protruding from the side surface of the body;

abutting the side face of the body of the precast slab against the side face of the upper flange, wherein the overhanging part of the channel steel is placed on the upper surface of the upper flange;

the outer extending part of the channel steel and the upper flange are fixedly connected, and the precast slab and the upper flange form a bottom plate of the bridge panel;

and pouring concrete on the surface of the bottom plate, and forming the bridge panel after the concrete is solidified.

2. The construction method according to claim 1, wherein providing the main beam comprises:

and the upper flange is provided with a first screw hole which penetrates through the upper flange along the vertical direction.

3. The construction method as claimed in claim 2, wherein after the prefabricated slab is provided, it comprises:

and a second screw hole penetrating through the overhanging part along the vertical direction is formed in the overhanging part of the channel steel, and the second screw hole can be communicated with the first screw hole.

4. The construction method as set forth in claim 3, wherein the upper flange and the overhanging portion of the channel are fixedly connected, and the precast slab and the upper flange form a bottom plate of the bridge deck, comprising:

arranging a bolt, wherein the bolt penetrates through the first screw hole and the second screw hole to be fixedly connected with the overhanging part of the channel steel and the upper flange;

the upper surface of the upper flange and the upper surface of the precast slab body form the surface of the bottom plate of the bridge deck.

5. The construction method according to claim 1, further comprising:

and bent ribs protruding out of the upper surface of the body are arranged on the body of the prefabricated slab.

6. A bridge deck connection device, comprising:

a main beam comprising an upper flange;

the prefabricated slab comprises a body and a channel, the channel comprises a built-in part positioned in the body and an overhanging part protruding from the side face of the body, the side face of the body of the prefabricated slab abuts against the side face of the upper flange, and the overhanging part of the channel is placed on the upper surface of the upper flange;

and the connecting part is fixedly connected with the overhanging part of the channel steel and the upper flange, and the precast slab and the upper flange form a bottom plate of the bridge panel.

7. The connecting device for bridge deck according to claim 6, wherein said upper flange is formed with a first screw hole penetrating through said upper flange in a vertical direction, and said connecting member is inserted through said first screw hole to connect said overhanging portion of said channel and said upper flange.

8. The bridge deck connection device according to claim 7, wherein the extended portion of the channel has a second screw hole extending through the extended portion in a vertical direction, the second screw hole is capable of communicating with the first screw hole, and the connection member passes through the first screw hole and the second screw hole to connect the extended portion of the channel and the upper flange.

9. The coupling structure of a bridge deck as claimed in claim 8, wherein the coupling parts of the prefabricated panels comprise bolts fixedly coupled to the overhanging portions of the channel and the upper flanges through the first and second screw holes, and the upper surfaces of the upper flanges and the upper surface of the body of the prefabricated panels form the surface of the bottom plate of the bridge deck.

10. The connecting device of a bridge deck as claimed in claim 9, wherein the upper surface of the body of the prefabricated panel is provided with a bent rib, the bent rib comprising:

an outer convex portion provided above the body of the prefabricated panel;

and the embedded part is arranged in the body of the precast slab.

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