CN110886231A - Construction method of bridge panel and supporting structure thereof - Google Patents
Construction method of bridge panel and supporting structure thereof Download PDFInfo
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- CN110886231A CN110886231A CN201911285044.2A CN201911285044A CN110886231A CN 110886231 A CN110886231 A CN 110886231A CN 201911285044 A CN201911285044 A CN 201911285044A CN 110886231 A CN110886231 A CN 110886231A
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- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 abstract description 12
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- 238000005452 bending Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention is applicable to the technical field of bridge construction, and provides a construction method of a bridge panel and a support structure thereof. The invention provides a construction method of a bridge panel, which comprises the following steps: and arranging a first lug plate on a web plate of the main beam and a second lug plate on the precast slab, detachably connecting a supporting piece with the first lug plate and the second lug plate to support the precast slab, and removing the supporting piece after forming the bridge deck. The detachable support for the precast slabs is formed by arranging the ear plates and the supporting pieces, only a small amount of ear plates and supporting pieces are needed, and the construction process is simple, so that the construction time of the bridge is saved; compared with the traditional full hall scaffold supporting structure, the lug plates and the supporting pieces occupy small space, and the influence on the convenience of under-bridge traffic is avoided.
Description
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 supporting structure 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 embodiment of the present invention provides a bridge deck construction method and a support structure 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 a web plate and an upper flange fixed with the upper end of the web plate, and a first lug plate is arranged on the web plate; arranging a prefabricated plate part on the upper surface of the upper flange, wherein the prefabricated plate and the upper flange form a bottom plate of the bridge panel, and a second lug plate is arranged on the part of the prefabricated plate not arranged on the upper flange; detachably connecting a supporting piece with the first ear plate and the second ear plate to support the precast slab; pouring concrete on the bottom plate, and forming the bridge panel after the concrete is solidified; and removing the supporting piece.
Further, the construction method further comprises the following steps: and arranging a bolt on the part, not provided with the precast slab, of the upper flange, wherein the bolt protrudes out of the upper surface of the upper flange so as to connect the bridge panel and the main beam.
Further, the construction method further comprises the following steps: and bent ribs protruding out of the upper surface of the precast slab are arranged on the precast slab.
Further, the detachably connecting a support member to the first and second ear plates includes: and connecting one end of the supporting piece with the first ear plate in a detachable mode, and connecting the other end of the supporting piece with the second ear plate in a detachable mode.
Further, after detaching the supporting member, the method further comprises: removing the first ear plate and/or the second ear plate.
The embodiment of the present invention further provides a supporting structure of a bridge panel, where the supporting structure of the bridge panel includes: the main beam comprises a web plate and an upper flange connected with the upper end of the web plate, and a first lug plate is arranged on the web plate; one part of the precast slab is arranged on the upper surface of the upper flange, the other part of the precast slab is provided with a second ear plate, and the precast slab and the upper flange are used for forming a bottom plate of the bridge deck; and the supporting piece is used for supporting the precast slab, one end of the supporting piece is detachably connected with the first ear plate, and the other end of the supporting piece is detachably connected with the second ear plate.
Further, the support structure of the bridge panel further includes: and the stud is arranged on the upper surface of the upper flange and used for connecting the bridge panel and the main beam.
Furthermore, connecting holes are formed in the first ear plate and the second ear plate, the one end of the support piece and the other end of the support piece are provided with buckling pieces, and the buckling pieces are buckled and connected with the connecting holes.
Furthermore, bent ribs are arranged on the upper surface of the precast slab.
Further, the bent rib includes: an outer convex portion disposed above the precast slab; and the embedded part is arranged in the precast slab.
The construction method of the bridge panel provided by the embodiment of the invention comprises the following steps: and arranging a first lug plate on a web plate of the main beam and a second lug plate on the precast slab, detachably connecting a supporting piece with the first lug plate and the second lug plate to support the precast slab, and removing the supporting piece after forming the bridge deck. The detachable support for the precast slab is formed by arranging the ear plates and the supporting pieces, only a small amount of ear plates and supporting pieces are needed, the construction process is simple, and the time is saved; and the ear plates and the supporting pieces occupy small space, so that the influence on the convenience of under-bridge traffic is avoided.
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 illustrating another construction method for a bridge deck according to an embodiment of the present invention;
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 flow chart illustrating another construction method for a bridge deck according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a main beam structure of a support structure for a bridge deck according to an embodiment of the present invention;
fig. 6 is a schematic structural view illustrating a supporting structure for a bridge deck, in which prefabricated panels and supporting members are installed;
FIG. 7 is a schematic structural view of a bridge deck support structure according to an embodiment of the present invention after concrete is poured therein;
FIG. 8 is a schematic structural view of a bridge deck support structure according to an embodiment of the present invention with the support members removed;
FIG. 9 is a schematic structural view of a bridge deck support structure according to an embodiment of the present invention with the ear plates removed;
fig. 10 is a schematic structural view of a prefabricated panel in a support structure for a bridge deck according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an ear plate in a supporting structure of a bridge deck according to an embodiment of the present invention.
Description of reference numerals:
10-bridge deck slab; 11-a main beam; 111-a web; 112-upper flange; 113-a first ear plate; 12-precast slab; 121-a second ear plate; 13-a support; 14-a peg; 15-ear plate attachment hole; 16-bending the ribs; 161-a convex portion; 162-pre-buried 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 support structure thereof can be applied to the construction process of various small, medium and large bridges, for example, the construction method and the support structure can be applied to cross-river bridges, cross-river bridges and pedestrian overpasses in urban transportation hubs; the construction method of the bridge deck and the support structure thereof can also be applied to the construction process of building construction, for example, the construction method and the support structure can be used for constructing overhanging floor sections of a building. The construction method and the support structure 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, a girder 11 is arranged, the girder 11 comprises a web plate 111 and an upper flange 112 fixedly connected with the upper end of the web plate 111, and a first ear plate 113 is arranged on the web plate 111.
Specifically, as shown in fig. 5, the main beam 11 may be a concrete main beam, a steel-concrete mixed main beam, or a laminated main beam, and the shape thereof may be "i" shape, "T" shape, "7" shape, or other shapes, and it only needs to satisfy that the main beam 11 includes a web 111 and an upper flange 112 fixedly connected to the upper end of the web 111. The main beam 11 may be integrally formed, that is, the web 111 and the upper flange 112 are integrally formed. Optionally, the web 111 extends in a vertical direction, and the upper flange 112 is a flat plate in a horizontal direction. 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. In addition, the first ear plates 113 are arranged on the web 112 of the main beam, wherein the number of the first ear plates 113 may be multiple, and the first ear plates 113 may be arranged on the web 112 in an array arrangement manner, for example, each first ear plate is arranged on the web 112 along the vertical direction.
And S102, partially arranging a precast slab 12 on the upper surface of the upper flange 112, wherein the precast slab 12 and the upper flange 112 form a bottom plate of the bridge deck 10, and a second lug plate 121 is arranged on the part of the precast slab 12 which is not arranged on the upper flange 112. Specifically, as shown in fig. 7, the portion of the prefabricated panel 12 disposed on the upper surface of the upper flange 112 may be fixed on the upper surface of the upper flange 112 by concrete, pins, or concrete-pinned fasteners. The area of the prefabricated panels 12 arranged on the upper surface of the upper flange 112 can be adjusted according to the actual engineering requirements, so as to form the bottom plate of the bridge deck 10 meeting the engineering requirements. Optionally, at a portion of the precast slab 12 that is not disposed on the upper flange 112, a plurality of second ear plates 121 are connected to the lower surface of the precast slab 12, and are arranged in an array or other arrangement manner, and the specific connection manner may be a threaded connection manner, a welding manner, and the like.
S103, detachably connecting a supporting piece 13 with the first ear plate 113 and the second ear plate 121, and supporting the precast slab 12.
As shown in fig. 6, each support member 13 is connected to the first ear plate 113 and the second ear plate 121, respectively. The number of the supporting members 13 and the first and second ear plates 113 and 121 can be adjusted according to the actual situation, for example, two supporting members 13, two first ear plates 113 and one second ear plate 121 are provided, each supporting member connects one first ear plate 113 and one second ear plate 121, and the two supporting members 13 and the web plate 113 form a triangle to support the precast slab 12. In other embodiments, two first ear plates 113 and two second ear plates 121, or one first ear plate 113 and two second ear plates 121 may be provided, and connected with the supporting member 13 to form different supporting manners.
Alternatively, the supporting member 13 may be a rigid material such as steel, and it should be noted that the rigid material refers to a material that does not deform or deforms little after being stressed. The connection mode of the supporting member 13 and the first ear plate 113 and the second ear plate 121 can be a detachable connection mode such as a snap connection, a threaded connection, a key connection and the like, and the supporting member 13 can be conveniently detached after the construction is completed.
And S104, pouring concrete on the bottom plate, and forming the bridge panel 10 after the concrete is solidified.
Specifically, concrete is poured on the upper surface of the bottom slab formed by the combination of the precast slabs 12 and the upper flange 112, 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. 6, 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 112 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 replaced by a cross-sectional line, as shown in fig. 7.
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, the concrete is covered and watered by a plastic film 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 finally, the concrete is solidified to form the bridge deck 10, as shown in fig. 7.
S105, detaching the supporting piece 13.
When the bridge deck 10 is completely poured and firmly fixed with the main beam 11 and the precast slab 12, the bridge deck 10 is reliably supported, and the bridge deck 10 is completely constructed, so that the supporting member 13 can be removed.
Specifically, as shown in fig. 8, before the support 13 is removed, the bridge deck 10 should be checked three more times to confirm that the construction is completed, and the support 13 does not need to be reused and then removed. When the support member 13 is connected with the first ear plate 113 or the second ear plate 121 in the previous construction, an appropriate removing method, such as manual removing or mechanical removing, may be selected. The removed support members 13 should be uniformly placed in the receiving area for transportation and subsequent construction. And finishing the construction process of the whole bridge deck.
Optionally, in some embodiments, as shown in fig. 2, based on fig. 1, after step S102 in fig. 1, the method further includes:
and S102A, arranging a bolt 14 on the part, where the precast slab 12 is not arranged, of the upper flange 112, wherein the bolt 14 protrudes out of the upper surface of the upper flange 112 to connect the bridge deck 10 and the main beam 11.
Specifically, as shown in fig. 7, after the prefabricated panels 12 are disposed on the upper flanges 112 of the main beams 11, the pegs 14 may be disposed on the upper flanges 112. Before the pegs 14 are arranged, the accurate construction positions of the pegs 14 should be determined on the upper surface of the upper flange 112 of the main beam 11 according to the spacing, the row spacing and the position requirements specified on the engineering construction design drawing. The studs 14 are then welded to the upper flanges 112 of the main beams 11 so as to project above the upper surfaces of the upper flanges 112. After the stud 14 is welded, the welding quality of the stud 14 can be checked, specifically, the stud 14 can be checked through appearance, namely whether the stud 14 is vertical to the upper surface of the upper flange 112 and whether the welding seam is uniform or not, and whether partial welding exists or not can be checked through a bending check mode, namely, the stud 14 with a defective appearance is checked mainly through hammering check, the stud 14 is hammered in the direction opposite to the defective part to be bent for a certain angle, and the welding seam can be judged to be qualified if no crack exists; if the weld cracks, it is necessary to repair weld a peg 14 slightly off site of the peg 14, wherein the bent peg 14 does not have to be straightened. Therefore, the bonding strength of the girder 11 and the bridge deck 10 is further improved, and the overall stress performance of the bridge is improved.
Optionally, in some embodiments, the construction method further includes:
s201, arranging bent ribs 16 protruding out of the upper surface of the precast slab 12 on the precast slab 12.
The bending ribs 16 can be arranged on the precast slabs 12 before the precast slabs 12 are formed after the main beams 11 are arranged, or can be arranged before the main beams 11 are arranged, so that the precast slabs 12 are formed and have the bending ribs 16 protruding out of the upper surfaces of the precast slabs.
Optionally, as shown in fig. 10, before the precast slab 12 is manufactured, the steel bars are bent to have a certain radian at normal temperature to form the bent bars 16, when the concrete of the precast slab 12 is not completely solidified, two end portions of the bent bars 16 are inserted into the concrete of the precast slab 12, and the concrete around the inserted position is compacted, specifically, the embedded portions of the bent bars 16 can be adjusted according to the thickness of the precast slab 12 and actual engineering requirements, and after the concrete of the precast slab 12 is completely solidified, the precast slab with the bent bars 16 is obtained. The bent rib 16 may be a metal member, when concrete is poured on the upper surface of the precast slab 12, the middle portion of the bent rib 16 protrudes from the upper surface of the precast slab 12 to form an outward protruding portion 161, and the two end portions are inserted into the concrete to form an embedded portion 162, so as to improve the bonding strength between the concrete and the precast slab 12, thereby improving the overall reliability of the bridge.
Optionally, in some embodiments, as shown in fig. 3, based on fig. 1, step S103 in fig. 1 may specifically adopt:
S103A, detachably connecting one end of the supporting member 13 to the first ear plate 113, and detachably connecting the other end of the supporting member 13 to the second ear plate 121.
Specifically, as shown in fig. 6, if there are a plurality of, for example, two, supporting members 13, one end of each supporting member 13 is connected to the first ear plate 113, and the other opposite end is connected to the second ear plate 121, and different supporting members may be connected to the same second ear plate or the same first ear plate according to actual conditions. The two ends of the supporting member 13 and the first ear plate 113 and the second ear plate 121 can be respectively connected by detachable connection methods such as snap connection, threaded connection, key connection and the like; for example: the both ends of support piece 13 set up the external screw thread, and connecting hole 15 inner wall sets up the internal thread, and first otic placode 113 and second otic placode 121 carry out threaded connection with support piece 13, also can adopt support piece 13's both ends to set up buckle spare, carry out the buckle with connecting hole 15 on first otic placode 113 and the second otic placode 121 and be connected. In a specific construction process, the supporting member 13 may be connected to the first ear plate 113 first, may be connected to the second ear plate 121 first, or may be connected to both ends of the supporting member 13 and the first ear plate 113 and the second ear plate 121 simultaneously. Make support piece 13's both ends be connected with first otic placode 113 or second otic placode 121 respectively through the mode of can dismantling the connection, fixed support piece 13's position forms detachable support structure, simple to operate.
Optionally, in some embodiments, as shown in fig. 4, based on fig. 1, after step S105 in fig. 1, the method further includes:
S105A, removing the first ear plate 113 and/or the second ear plate 121.
Specifically, as shown in fig. 9, after the supporting member 13 is removed, the first ear plate 113 and/or the second ear plate 121 may be further removed, the removing process and the removing manner may refer to the previous process and the previous manner for removing the supporting member 13, and the removed first ear plate 113 and/or the removed second ear plate 121 may be optionally placed together with the supporting member 13, so as to facilitate the subsequent construction and use. By removing the first ear plate 113 and/or the second ear plate 121, the surface tidiness of the main beam 11 and/or the precast slab 12 can be maintained, and the overall appreciation of the bridge can be improved.
As shown in fig. 7, an embodiment of the present invention further provides a support structure for a bridge panel, including: main girders 11, prefabricated panels 12, and supports 13, the supports 13 supporting the prefabricated panels 12 on the main girders 11.
The main beam 11 comprises a web 111 and an upper flange 112 fixed to the upper end of the web 111, and a first ear plate 113 is disposed on the web 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" shape, and it is only necessary that the main beam 11 includes a web 111 and an upper flange 112 fixedly connected to an upper end of the web 111. In addition, the number of the first ear plates 113 may be plural, and a plurality of the first ear plates 113 may be distributed at different positions on the web 111, thereby facilitating the support of the prefabricated panel 12 from a plurality of angles together with the supporting member 13 and the second ear plates 121. The first ear plate 113 is disposed on the web 111 by means including, but not limited to, welding, screwing, etc.
One part of the precast slab 12 is arranged on the upper surface of the upper flange 112, and the other part of the precast slab 12 is provided with a second ear plate 121, and the precast slab 12 and the upper flange 112 are used for forming a bottom plate of the bridge deck 10. Specifically, the prefabricated panels 12 may be simply erected, or installed on the upper surface of the upper flange 112 by using pins, or by using concrete at the contact portion between the prefabricated panels 12 and the upper flange 112, and the area of the prefabricated panels 12 installed on the upper surface of the upper flange 112 may also be appropriately adjusted according to the actual engineering requirements, so as to form the bottom slab of the bridge deck 10 meeting the engineering requirements. The number of the second ear plates 121 can also be multiple, and the second ear plates are arranged on the part of the precast slab 12 which is not arranged on the upper flange 112 by adopting a threaded connection or welding mode, and the like, and optionally, the specific arrangement position can be located on the part of the precast slab 12 which is far away from the upper flange 112, so that the support moment arm of the support structure is increased, and the support stability of the support structure is further improved.
The supporting member 13 is used for supporting the prefabricated slab 12, one end of the supporting member 13 is detachably connected to the first ear plate 113, and the other end of the supporting member 13 is detachably connected to the second ear plate 121. Specifically, the supporting member 13 may be made of a rigid material such as steel, and will not deform significantly while ensuring that it can bear enough pressure from the precast slab 12 and the bridge deck 10, and the supporting member 13 and the first ear plate 113 and the second ear plate 121 are detachably connected at the connection position, which may be a snap connection, a threaded connection, a key connection, or the like. Optionally, one or more of the first ear plate 113 or the second ear plate 121 can be removably coupled to at least one end of one of the support members 13, thereby increasing the support capacity of the support structure without increasing the number of ear plates.
The detachable support for the precast slabs is formed by arranging the ear plates and the supporting pieces, so that the support structure is simple, the stress is clear, only a small amount of ear plates and supporting pieces are needed, the construction process is simple, and the construction time of the bridge is saved; compared with the traditional full hall scaffold supporting structure, the lug plates and the supporting pieces occupy small space, and the influence on the traffic under the bridge is avoided.
Optionally, as shown in fig. 7, the supporting structure of the bridge deck 10 further includes: and pegs 14 provided on the upper surface of the upper flange 112 at portions where the precast slabs 12 are not provided, for connecting the bridge deck 10 and the main girders 11. The stud 14 is used as a high-strength rigid connecting fastener for connecting the main beam 11 and the concrete bridge deck 10, and the stud 14 is also called a shear pin, wherein the rigidity refers to the capability of resisting elastic deformation of a material or a structure when stressed, and the larger the rigidity is, the less the material or the structure is easily elastically deformed when stressed. Specifically, the studs 14 may be welded to the upper flange 112 of the main beam 11 by a special stud welder and a stud gun so as to protrude from the upper surface of the upper flange 112. The specific welding positions and the intervals among the studs 14 are in accordance with the regulations on engineering construction design drawings. By arranging the studs 14 on the upper flanges 112 of the main beams 11, the bonding strength between the main beams 11 and the bridge panel 10 is improved, and the overall stress performance of the bridge is improved.
Optionally, as shown in fig. 7 and 11, a connection hole 15 is formed in the first ear plate 113 and/or the second ear plate 121, and both the one end and the second end of the support 13 are provided with a fastener, and the fastener is connected to the connection hole 15 in a fastening manner. Specifically, the fasteners at the two ends of the supporting member 13 may be a right-angle fastener, a butt-joint fastener, or a rotation fastener. In some embodiments, the supporting member 13 is detachably fastened to the connecting holes 15 formed in the first ear plate 113 and/or the second ear plate 121 through the fasteners at both ends, so as to fix the position of the supporting member 13 and provide reliable support for the prefabricated plate 12, and the fastening means of the fasteners is simple to install and convenient to detach, which helps to improve the practicability of the supporting structure.
Optionally, as shown in fig. 10, the upper surface of the precast slab 12 is provided with a bent rib 16, and the bent rib 16 includes: an outwardly convex portion 161 provided above the prefabricated panel 12; and an embedded part 162 disposed in the prefabricated panel 12. Specifically, the bent ribs 16 may be distributed on the upper surface of the precast slab 12 in an array manner, and the specific distribution distance between two adjacent bent ribs 16 should meet the requirement of construction strength. The bent ribs 16 at different positions on the precast slab 12 can be specifically adjusted in the distribution density of the bent ribs 16, the diameter of the bent ribs 16, or the height of the outer convex portions 161 of the bent ribs 16 and the embedded depth of the embedded portions 162 according to the actual required bonding strength between the precast slab 12 and the bridge deck 10. The bent ribs 16 are arranged on the precast slabs 12, so that the bonding strength between the bridge deck 10 and the precast slabs 12 can be improved, and the overall reliability of the bridge can be improved.
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 a web plate and an upper flange fixedly connected with the upper end of the web plate, and a first lug plate is arranged on the web plate;
arranging a prefabricated plate part on the upper surface of the upper flange, wherein the prefabricated plate and the upper flange form a bottom plate of the bridge panel, and a second lug plate is arranged on the part of the prefabricated plate not arranged on the upper flange;
detachably connecting a supporting piece with the first ear plate and the second ear plate to support the precast slab;
pouring concrete on the bottom plate, and forming the bridge panel after the concrete is solidified;
and removing the supporting piece.
2. The construction method according to claim 1, further comprising:
and arranging a bolt on the part, not provided with the precast slab, of the upper flange, wherein the bolt protrudes out of the upper surface of the upper flange so as to connect the bridge panel and the main beam.
3. The construction method according to claim 1, further comprising:
and bent ribs protruding out of the upper surface of the precast slab are arranged on the precast slab.
4. The method of claim 1, wherein removably attaching a support member to the first and second ear plates comprises:
and connecting one end of the supporting piece with the first ear plate in a detachable mode, and connecting the other end of the supporting piece with the second ear plate in a detachable mode.
5. The construction method of claim 1, further comprising, after removing the support member:
removing the first ear plate and/or the second ear plate.
6. A support structure for a bridge deck, comprising:
the main beam comprises a web plate and an upper flange fixed with the upper end of the web plate, and a first lug plate is arranged on the web plate;
one part of the precast slab is arranged on the upper surface of the upper flange, the other part of the precast slab is provided with a second ear plate, and the precast slab and the upper flange are used for forming a bottom plate of the bridge deck;
and the supporting piece is used for supporting the precast slab, one end of the supporting piece is detachably connected with the first ear plate, and the other end of the supporting piece is detachably connected with the second ear plate.
7. A bridge panel support structure as claimed in claim 6, further comprising:
and the stud is arranged on the part, which is not provided with the precast slab, of the upper surface of the upper flange and is used for connecting the bridge panel and the main beam.
8. The bridge deck support structure according to claim 6, wherein the first ear plate and the second ear plate are provided with connecting holes, and the one end and the other end of the support member are provided with fasteners, and the fasteners are fastened and connected with the connecting holes.
9. A support structure for a bridge deck as claimed in claim 6 or 7, wherein the upper surface of the precast slab is provided with a bent rib.
10. A bridge deck support structure as claimed in claim 9, wherein the bent ribs comprise:
an outer convex portion disposed above the precast slab;
and the embedded part is arranged in the precast slab.
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| CN201911285044.2A CN110886231A (en) | 2019-12-13 | 2019-12-13 | Construction method of bridge panel and supporting structure thereof |
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Cited By (1)
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