CN113585051A - Bridge pier and manufacturing method thereof - Google Patents
Bridge pier and manufacturing method thereof Download PDFInfo
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- CN113585051A CN113585051A CN202010366610.9A CN202010366610A CN113585051A CN 113585051 A CN113585051 A CN 113585051A CN 202010366610 A CN202010366610 A CN 202010366610A CN 113585051 A CN113585051 A CN 113585051A
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- pier
- bar
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- column
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a pier and a manufacturing method thereof, wherein the pier comprises an upper pillar and a lower pillar, the bottom of the upper pillar is provided with a bottom plate, the top of the lower pillar is provided with a top plate, the lower pillar is supported at the bottom of the upper pillar, and the top plate is connected with the bottom plate in a welding manner. According to the pier, the upper pillar and the lower pillar are connected by welding the top plate and the bottom plate, so that the upper pillar and the lower pillar can be made independently, and the production process is more flexible. Moreover, the lower pier column and the upper pier column can be made of the same material, such as steel columns or concrete columns, or made of different materials, such as one steel column and the other concrete column, so that the design of the pier is more flexible. In addition, when the upper prop is the steel column, and the lower pier stud is the concrete column, need not insert lower pier stud with the upper prop and pour the concrete again, avoid causing the too big problem of pier stud size down.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a pier and a manufacturing method thereof.
Background
In some piers in the related art, the upper pillar and the lower pillar are made of the same material, for example, both are of a steel pipe concrete structure, and for example, both are of a reinforced concrete structure. However, in other piers in the related art, the upper pier and the lower pier are made of different materials, for example, the upper pier is made of a steel pipe concrete structure (abbreviated as steel column), the lower pier is made of a reinforced concrete structure (abbreviated as concrete column), and because the upper pier and the lower pier are made of different materials, when the upper pier and the lower pier are spliced, the steel column is usually inserted into the concrete column, and concrete of the concrete column is required to wrap the steel column, so that the concrete column has to be large in size, large in floor area, and material waste and high in cost.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pier which is flexible to manufacture, does not need to insert an upper pillar into a lower pillar and then pour concrete, and avoids the problem that the size of the lower pillar is too large. The invention further provides a manufacturing method of the pier.
According to an embodiment of the first aspect of the present invention, a bridge pier comprises: the bottom of the upper strut is provided with a bottom plate; and the top of the lower pier column is provided with a top plate, the lower pier column is supported at the bottom of the upper pillar, and the top plate is connected with the bottom plate in a welding manner.
According to the pier, the upper pillar and the lower pillar are connected by welding the top plate and the bottom plate, so that the upper pillar and the lower pillar can be made independently, and the production process is more flexible. Moreover, the lower pier column and the upper pier column can be made of the same material, such as steel columns or concrete columns, or made of different materials, such as one steel column and the other concrete column, so that the design of the pier is more flexible. In addition, when the upper prop is the steel column, and the lower pier stud is the concrete column, need not insert lower pier stud with the upper prop and pour the concrete again, avoid causing the too big problem of pier stud size down.
In some embodiments, the lower pier is a reinforced concrete column and includes a reinforcement assembly below the top plate having a grouting hole for pouring concrete and a concrete column structure surrounding the reinforcement assembly.
In some embodiments, the top plate also has a vent for venting.
In some embodiments, the rebar assembly comprises: first reinforcing bar, first reinforcing bar is a plurality of and centers on the central axis equipartition of pier stud down, the bottom of first reinforcing bar stretches into the below ground basis, the top of first reinforcing bar through the altitude mixture control structure with the roof links to each other in order to support the roof, the altitude mixture control structure is used for adjusting the roof is relative the mounting height of first reinforcing bar.
In some embodiments, the height adjustment structure comprises: the internal thread sleeve is fixed at the bottom of the top plate; the external thread is formed at the top end of the first steel bar, and the top end of the first steel bar is screwed into the internal thread sleeve through the external thread.
In some embodiments, the rebar assembly comprises: the second reinforcing bar, the second reinforcing bar is a plurality of and centers on the central axis equipartition of pier stud down, and a plurality of first reinforcing bar centers on a plurality ofly the second reinforcing bar sets up, every the second reinforcing bar all includes first perpendicular muscle section, first last horizontal muscle section and first horizontal muscle section down, with the central axis of pier stud down makes the base circle for the center, first last horizontal muscle section by the upper end of first perpendicular muscle section is followed the radial inward extension of base circle, first horizontal muscle section down by the lower extreme of first perpendicular muscle section is followed the radial inward extension of base circle, just first horizontal muscle section down is on a parallel with first last horizontal muscle section sets up, first last horizontal muscle section supports the bottom of roof.
In some embodiments, the rebar assembly comprises: the third reinforcing bar, the third reinforcing bar is a plurality of and centers on the central axis equipartition of pier stud down, and a plurality of the second reinforcing bar centers on a plurality ofly the third reinforcing bar sets up, every the third reinforcing bar all includes horizontal muscle section, two second vertical muscle sections and two second horizontal muscle sections down on the second, horizontal muscle section is followed on the second the chord line of base circle extends, two the second vertical muscle section respectively by the both ends downwardly extending of horizontal muscle section on the second, every one is connected respectively to the lower extreme that the muscle section was erected to the second horizontal muscle section under the second, just horizontal muscle section is on a parallel with horizontal muscle section sets up on the second under the second, horizontal muscle section supports on the second the bottom of roof.
In some embodiments, the rebar assembly comprises: the transverse frame comprises fourth steel bars and fifth steel bars, the fourth steel bars are four and spliced into a quadrilateral frame, the fifth steel bars are two and do two diagonals of the quadrilateral frame, and the transverse frame is connected with the first steel bars.
In some embodiments, the rebar assembly comprises: and the sixth reinforcing steel bar extends along the cylindrical spiral line and surrounds the plurality of first reinforcing steel bars.
In some embodiments, the upper column is a concrete filled steel tubular column and includes at least one steel tube positioned above the floor and a concrete core structure filled within the steel tube.
According to the manufacturing method of the bridge pier provided by the embodiment of the second aspect of the invention, the bridge pier comprises an upper support column and a lower support column, the upper support column is a steel pipe concrete column, the bottom of the upper support column is provided with a bottom plate, the lower support column is a reinforced concrete column, and the top of the lower support column is provided with a top plate, the manufacturing method comprises the following steps: and (3) prefabricating and molding the upper support column, prefabricating and molding the lower pier column, placing the prefabricated and molded upper support column at the top of the prefabricated and molded lower pier column, and welding the top plate and the bottom plate.
According to the manufacturing method of the pier, the manufacturing flexibility is good, and the size of the lower pier column can be small.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of a bridge pier according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal construction of the pier shown in fig. 1;
FIG. 3 is a top view of the top plate shown in FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A shown in FIG. 2;
FIG. 5 is a sectional view taken along line B-B shown in FIG. 2;
fig. 6 is a schematic view of the first rebar of fig. 2;
FIG. 7 is a cross-sectional view taken along line C-C shown in FIG. 5;
fig. 8 is a schematic view of the second rebar of fig. 7;
FIG. 9 is an enlarged view of the connection of the top plate and the second reinforcing bar shown in FIG. 5;
fig. 10 is a schematic view of the third rebar of fig. 7;
FIG. 11 is a cross-sectional view taken along line D-D of FIG. 2;
fig. 12 is a schematic view of a sixth reinforcing bar shown in fig. 2;
fig. 13 is a sectional view taken along line E-E shown in fig. 1.
Reference numerals:
a pier 100;
an upper pillar 1;
a base plate 11; a steel pipe 12; a concrete core structure 13;
a lower pier stud 2; a central axis 201; a base circle 202;
a top plate 21; grouting holes 211; a vent hole 212;
a rebar assembly 22;
a first reinforcing bar 221; a transverse rib section 221 a;
a second rebar 222; a first vertical rib segment 222 a; a first upper transverse rib section 222 b; a first lower transverse rib section 222 c;
the third reinforcing bars 223; a second upper transverse rib segment 223 a; a second vertical rib segment 223 b; a second lower transverse rib section 223 c;
a transverse frame 224; a fourth reinforcing bar 2241; fifth reinforcing steel bars 2242;
a sixth rebar 225; a seventh reinforcing bar 226;
a concrete column structure 23;
a height adjustment structure 24; an internally threaded sleeve 241; external threads 242;
a ground surface 200; a base 300.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
In some piers in the related art, the upper pillar and the lower pillar are made of the same material, for example, both are of a steel pipe concrete structure, and for example, both are of a reinforced concrete structure. However, in other piers in the related art, the upper pier and the lower pier are made of different materials, for example, the upper pier is made of a steel pipe concrete structure (abbreviated as steel column), the lower pier is made of a reinforced concrete structure (abbreviated as concrete column), and because the upper pier and the lower pier are made of different materials, when the upper pier and the lower pier are spliced, the steel column is usually inserted into the concrete column, and concrete of the concrete column is required to wrap the steel column, so that the concrete column has to be large in size, large in floor area, and material waste and high in cost. In order to solve at least one of the above problems, the present invention provides a pier 100 and a method for manufacturing the pier 100.
Next, a pier 100 according to an embodiment of the first aspect of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, a bridge pier 100 according to an embodiment of the present invention includes an upper column 1 and a lower column 2, the upper column 1 has a bottom plate 11 at the bottom thereof, the lower column 2 has a top plate 21 at the top thereof, the lower column 2 is supported at the bottom of the upper column 1, and the top plate 21 is welded to the bottom plate 11. It should be noted that the pier 100 according to the embodiment of the present invention may be used to support a track beam, which may be directly or indirectly supported on the top of the upper column 1.
Therefore, according to the pier 100 of the embodiment of the invention, due to the connection of the upper pillar 1 and the lower pillar 2, only the welding of the top plate 21 and the bottom plate 11 is adopted, so that the manufacture of the upper pillar 1 and the manufacture of the lower pillar 2 can be independent from each other, and the production flow is more flexible. Moreover, the lower pier column 2 and the upper pier column 1 can be made of the same material, such as steel columns or concrete columns, or made of different materials, such as one steel column and the other concrete column, so that the design of the pier is more flexible.
In addition, when upper prop 1 is the steel column, and lower pier stud 2 is the concrete column, need not insert lower pier stud 2 with upper prop 1 and pour the concrete again, avoid causing the too big problem of pier stud 2 size down to make the external diameter of lower pier stud 2 unlimited, for example the upper end external diameter of lower pier stud 2 can be equal to, or be a bit bigger than, even be a bit smaller than the lower extreme external diameter of upper prop 1, thereby can reduce the volume, material and the area of lower pier stud 2.
For example, in one specific example of the present invention, as shown in fig. 1, the top plate 21 and the bottom plate 11 have the same shape and size, so that the welding between the two can be better achieved, although the present invention is not limited thereto, and in other embodiments of the present invention, the shape and size of the top plate 21 and the bottom plate 11 can be slightly different, so as to better meet different practical requirements.
In some embodiments of the present invention, as shown in fig. 2 and 3, the lower pier 2 is a reinforced concrete column, and includes a reinforcement assembly 22 under a top plate 21 and a concrete column structure 23 wrapping the reinforcement assembly 22, the top plate 21 having a grouting hole 211 for pouring concrete. Therefore, the lower pier column 2 has better strength and more reliable supporting capacity. Moreover, by arranging the grout holes 211 on the top plate 21, when the lower pier stud 2 is manufactured, the formwork can be used to surround the steel bar assembly 22, and concrete is poured from the grout holes 211 on the top plate 21 from top to bottom to obtain the concrete column structure 23, so that the manufacture of the lower pier stud 2 can be simply and effectively completed.
In some embodiments of the present invention, as shown in fig. 3, the top plate 21 further has a vent hole 212 for ventilation, so that when concrete is poured and vibrated, air in the concrete can be smoothly discharged through the vent hole 212, the concrete at the bottom of the top plate 21 is ensured to be dense, no hollowing phenomenon occurs, and the obtained concrete column structure 23 is ensured to be reliably stressed.
In some embodiments of the present invention, as shown in fig. 2 and 4, the reinforcement assembly 22 includes a plurality of first reinforcements 221, the first reinforcements 221 are uniformly distributed around the central axis 201 of the lower pier 2, the first reinforcements 221 extend in a vertical direction or a substantially vertical direction, the bottom ends of the first reinforcements 221 extend into the foundation 300 below the ground 200, in conjunction with fig. 6 and 7, the top ends of the first reinforcements 221 are connected to the top plate 21 through a height adjusting structure 24 to support the top plate 21, and the height adjusting structure 24 is used for adjusting the installation height of the top plate 21 relative to the first reinforcements 221. Therefore, the top plate 21 can be reliably supported by the first reinforcing bars 221, and the installation height of the top plate 21 can be adjusted by arranging the height adjusting structure 24, so that the assembly precision of the first reinforcing bars 221 can be reduced, that is, when the first reinforcing bars 221 are inserted into the foundation 300 below the ground 200, the installation height of the top plate 21 can be subsequently adjusted by the height adjusting structure 24 no matter the insertion depth is deep or the insertion depth is shallow, so that the installation height of the top plate 21 is not influenced by the depth of the first reinforcing bars 221 inserted into the foundation 300, the assembly difficulty is reduced, and the assembly efficiency is improved.
In the example shown in fig. 7, for example, the height adjustment structure 24 may include: the top plate 21 is fixed at the bottom of the top plate 21 through the internal thread sleeve 241 and the external thread 242, the internal thread sleeve 241 is fixed at the bottom of the top plate 21, the external thread 242 is formed at the top end of the first steel bar 221, and the top end of the first steel bar 221 is screwed into the internal thread sleeve 241 through the external thread 242, so that the installation height of the top plate 21 relative to the first steel bar 221 can be adjusted by adjusting the screwing depth of the top end of the first steel bar 221. Thus, the height adjusting structure 24 is simple in structure, high in connection reliability, and convenient in height adjustment. Of course, the present invention is not limited thereto, and the height adjusting structure 24 may also be configured in other forms, for example, the height adjusting structure 24 may also include a screw mechanism, even a cylinder structure, etc., which will not be described herein.
In addition, as shown in fig. 6, in some embodiments of the present invention, the bottom end of the foundation 300 of the first reinforcing bar 221, which is configured to protrude below the ground 200, may have a transverse bar section 221a, and the transverse bar section 221a extends in a horizontal direction or a substantially horizontal direction, so that the connection reliability of the first reinforcing bar 221 to the foundation 300 may be improved.
In some embodiments of the present invention, as shown in fig. 5 and 7, the reinforcing bar assembly 22 further includes a plurality of second reinforcing bars 222, the second reinforcing bars 222 being a plurality of bars and being uniformly distributed around the central axis 201 of the lower pier 2, and a plurality of first reinforcing bars 221 being disposed around the plurality of second reinforcing bars 222, with reference to fig. 8, each of the second reinforcing bars 222 including a first vertical bar section 222a, a first upper transverse bar section 222b, and a first lower transverse bar section 222c, each of the first upper transverse bar section 222b and the first lower transverse bar section 222c extending in a horizontal direction or a substantially horizontal direction, the first vertical bar section 222a extending in a vertical direction or a substantially vertical direction, a base circle 202 centered on the central axis 201 of the lower pier 2 with reference to fig. 5 and 7, the first upper transverse bar section 222b extending from an upper end of the first vertical bar section 222a radially inward of the base circle 202, the first lower transverse bar section 222c extending from a lower end of the first vertical bar section 222a radially inward of the base circle 202, and the first lower transverse rib section 222c is disposed in parallel with the first upper transverse rib section 222b, and the first upper transverse rib section 222b is supported at the bottom of the top plate 21. For example, in the example shown in fig. 9, the first upper transverse rib section 222b may be welded to the lower surface of the top plate 21 or fixed to the lower surface of the top plate 21 by strapping or other connectors.
From this, through setting up second reinforcing bar 222 and supporting roof 21, can further improve the support intensity of pier stud 2 down, and can improve the reliability of being connected of second reinforcing bar 222 and concrete column structure 23 through setting up first horizontal muscle section 222c down. In addition, it should be noted that each second steel bar 222 can be formed by bending one steel bar, so that the joint of the first vertical bar section 222a and the first upper transverse bar section 222b, and the joint of the first vertical bar section 222a and the first lower transverse bar section 222c can be arc sections, and the structural strength and the supporting strength of the second steel bar 222 can be improved. Of course, the present invention is not limited thereto, and each second steel bar 222 may also be formed by splicing a plurality of steel bars, such as welding or bundling, to meet different practical requirements. Further, it is to be noted that F1 shown in fig. 5 represents the transverse direction, and F2 represents the forward direction.
In some embodiments of the present invention, as shown in fig. 5 and 7, the reinforcing bar assembly 22 further includes a third reinforcing bar 223, the third reinforcing bar 223 is a plurality of bars 223 uniformly distributed around the central axis 201 of the lower pier 2, and a plurality of second reinforcing bars 222 are arranged around the plurality of third reinforcing bars 223, in combination with fig. 10, each of the third reinforcing bars 223 includes a second upper transverse bar section 223a, two second vertical bar sections 223b, and two second lower transverse bar sections 223c, each of the second upper transverse bar sections 223a and the second lower transverse bar sections 223c extends in a horizontal direction or a substantially horizontal direction, the second vertical bar sections 223b extends in a vertical direction or a substantially vertical direction, in combination with fig. 5, the second upper transverse bar section 223a extends along a chord line of the base circle 202, in combination with fig. 10, the two second vertical bar sections 223b extend downward from two ends of the second upper transverse bar sections, for example, in a vertical direction or a substantially vertical direction, and a lower end of each of the second vertical bar sections 223b is connected to one of the second lower transverse bar sections 223c, and the second lower transverse rib section 223c is disposed in parallel with the second upper transverse rib section 223a, and the second upper transverse rib section 223a is supported at the bottom of the top plate 21. For example, the second upper transverse rib section 223a may be welded to the lower surface of the top plate 21, or fixed to the lower surface of the top plate 21 by strapping or other connectors.
From this, through setting up third reinforcing bar 223 support roof 21, can further improve the support intensity of pier stud 2 down, and can improve the reliability of being connected of third reinforcing bar 223 and concrete column structure 23 through setting up horizontal muscle section 223c under the second, moreover, because horizontal muscle section 222b and the horizontal muscle section 223a extend along the radial and the chord line of base circle 202 respectively on first, thereby can improve the support reliability to roof 21 better. In addition, it should be noted that each third steel bar 223 can be formed by bending a steel bar, so that the joint of the second vertical bar segment 223b and the second upper transverse bar segment 223a and the joint of the second vertical bar segment 223b and the second lower transverse bar segment 223c can be arc segments, and the structural strength and the supporting strength of the third steel bar 223 can be improved. Of course, the present invention is not limited thereto, and each third steel bar 223 may also be formed by splicing a plurality of steel bars, such as welding or bundling, to meet different practical requirements.
In addition, it should be noted that, as shown in fig. 7, the two second lower transverse rib sections 223c at the bottom of each third reinforcing bar 223 may extend in a direction approaching each other or in a direction moving away from each other. In addition, as shown in fig. 7, in some embodiments of the present invention, the bottom end of the first reinforcing bar 221 may be lower than the bottom end of the second reinforcing bar 222, and the bottom end of the second reinforcing bar 222 may be lower than the bottom end of the third reinforcing bar 223, so that the cost may be saved while ensuring the supporting strength, but the present invention is not limited thereto, and when the cost is not limited thereto, the bottom ends of the second reinforcing bar 222 and the third reinforcing bar 223 may be respectively extended downward, so as to better improve the supporting reliability of the lower pier 2.
In some embodiments of the present invention, as shown in fig. 7 and 11, the rebar assembly 22 comprises: the transverse frame 224 comprises fourth steel bars 2241 and fifth steel bars 2242, the fourth steel bars 2241 and the fifth steel bars 2242 extend along the horizontal direction or the substantially horizontal direction, the fourth steel bars 2241 are four and spliced to form a quadrilateral frame, the fifth steel bars 2242 are two diagonal lines of the quadrilateral frame, and the transverse frame 224 is connected with the first steel bars 221. This can further improve the support reliability of the lower pier 2. For example, the fourth and fifth reinforcing bars 2241 and 2242 may be bound or welded, and the transverse frame 224 and the first reinforcing bar 221 may be bound or welded.
In some embodiments of the present invention, as shown in fig. 2 and 12, rebar assemblies 22 include: a sixth reinforcing bar 225, the sixth reinforcing bar 225 extending along the cylindrical helix, with reference to fig. 5, the sixth reinforcing bar 225 surrounding the plurality of first reinforcing bars 221. This can further improve the structural reliability of the lower pier 2. For example, in some embodiments, the sixth reinforcing bar 225 may be disposed against the first reinforcing bar 221, thereby functioning to bind the first reinforcing bar 221, and further improving the supporting reliability of the lower pier 2.
Of course, the present invention is not limited thereto, and the rebar assembly 22 may also include other rebars, such as, in the example shown in fig. 5, the rebar assembly 22 includes: a seventh reinforcing bar 226, the seventh reinforcing bar 226 extending along the cylindrical spiral and being wound around the plurality of first reinforcing bars 221. This can further improve the structural reliability of the lower pier 2. For example, in some embodiments, the seventh reinforcing bar 226 may be disposed against the first reinforcing bar 221, thereby functioning to support the first reinforcing bar 221 from the inside, and further improving the supporting reliability of the lower pier 2. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the rebar assembly 22 may also include only one or more of the first rebar 221, the second rebar 222, the third rebar 223, the fourth rebar 2241, the fifth rebar 2242, the sixth rebar 225, and the seventh rebar 226, so as to meet different practical requirements.
In some embodiments of the present invention, as shown in fig. 2, the upper support column 1 is a concrete filled steel tubular column, and includes at least one steel tube 12 positioned above the floor 11 and a concrete core structure 13 filled in the steel tube 12. Thereby, the structure of the upper column 1 is reliable. For example, the lower end of the steel pipe 12 may be welded to the base plate 11, thereby improving connection reliability. For example, in the example shown in fig. 13, the steel pipes 12 may be four and the lower ends of the four steel pipes 12 are close to and all connected to the bottom plate 11, and the four steel pipes 12 extend from bottom to top toward a direction away from each other, so that the center lines of the four steel pipes 12 may constitute a rectangular pyramid line or a rectangular pyramid column, whereby the upper column 1 may have better support performance and materials may be saved.
Hereinafter, a method of fabricating a pier 100 according to an embodiment of the second aspect of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the pier 100 includes an upper pillar 1 and a lower pillar 2, wherein the upper pillar 1 is a steel pipe concrete column, a bottom plate 11 is provided at the bottom of the upper pillar 1, the lower pillar 2 is a reinforced concrete column, and a top plate 21 is provided at the top of the lower pillar 2, and the manufacturing method includes the steps of: prefabricating and molding the upper pillar 1, prefabricating and molding the lower pillar 2, placing the prefabricated and molded upper pillar 1 at the top of the prefabricated and molded lower pillar 2, and welding the top plate 21 and the bottom plate 11. Therefore, the manufacturing is very convenient and fast, and the construction is facilitated.
Next, a bridge pier 100 and a method for fabricating the same according to one embodiment of the present invention will be described with reference to the accompanying drawings.
The pier 100 is divided into an upper part and a lower part, an upper pillar 1 on the upper part is a steel pipe concrete limb separating column, a lower pillar 2 on the lower part is a reinforced concrete circular column, a bottom plate 11 is arranged at the lower end of the upper pillar 1, a top plate 21 is arranged at the upper end of the lower pillar 2, and the bottom plate 11 is placed on the top surface of the top plate 21 and connected with the top plate in a welding mode. The upper support column 1 comprises a plurality of branch columns arranged above a bottom plate 11, each branch column comprises a steel pipe 12 and a concrete core structure 13 filled in the steel pipe 12, the plurality of branch columns can be prefabricated in a factory, and then the plurality of branch columns and the bottom plate 11 are welded in the factory or a construction site to form the upper support column 1.
The lower pier column 2 comprises a steel bar assembly 22 arranged below the top plate 21 and a cylindrical concrete column structure 23 wrapping the steel bar assembly 22, wherein the steel bar assembly 22 comprises first to sixth steel bars 225, the upper end of the first steel bar 221 is fixed on the bottom surface of the top plate 21 by using a height adjusting structure 24, the lower end of the first steel bar 221 extends into a foundation 300 below the ground 200, the first steel bar 221 and the sixth steel bar 225 form a main structure of the steel bar assembly 22, the second steel bar 222 and the third steel bar 223 are welded on the bottom surface of the bottom plate 11 to enhance the connection reliability of the top plate 21 and the concrete column structure 23, the fourth steel bar 2241 and the fifth steel bar 2242 are welded or bundled into a transverse frame 224 to prevent the steel bars from shifting or dislocation, and further enhance the connection reliability of the top plate 21 and the concrete column structure 23.
When manufacturing lower pier stud 2, can be earlier with steel bar assembly 22 in lower pier stud 2 according to from outside to inside, from the bottom up's order discharges and be connected with roof 21, then, surround cylindrical concatenation template outside steel bar assembly 22, pour into the concrete through the grout hole 211 that advances reservation on roof 21, obtain columniform concrete column structure 23, simultaneously, in order when concrete placement vibrates, guarantee that the gas in the concrete can discharge smoothly, guarantee that the concrete column structure 23 of roof 21 bottom is closely knit, the hollowing does not appear, influence the atress, reserve air vent 212 simultaneously on roof 21 and guarantee to exhaust. In addition, in order to ensure the force transmission, the main reinforcement in the reinforcement assembly 22 of the lower pier stud 2 needs to be tightly propped against the top plate 21 and then welded. Thus, after the lower pier 2 is fabricated, the fabricated upper pier 1 is hung on the top plate 21, and the bottom plate 11 of the upper pier 1 and the top plate 21 of the lower pier 2 are welded to complete the fabrication of the pier 100.
Therefore, according to the pier 100 of the embodiment of the invention, the upper pillar 1 at the upper part is the steel pipe concrete limb separating column, and the lower pillar 2 at the lower part is the reinforced concrete circular column, so that the pier 100 has better stability and better supporting strength, and moreover, because the upper part and the lower part are welded through the top plate 21 and the bottom plate 11, a common connecting steel bar is not arranged, namely the upper pillar 1 does not contain the steel bar extending into the lower pillar 2, and the lower pillar 2 does not contain the steel bar extending into the upper pillar 1, so that the size of the lower pillar 2 is ensured to be smaller, and the lower pillar 2 and the upper pillar 1 can be manufactured separately, so that the whole production is more flexible, and the production efficiency is higher.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A bridge pier (100) characterized by comprising:
an upper pillar (1), wherein the bottom of the upper pillar (1) is provided with a bottom plate (11); and
pier stud (2) down, the top of pier stud (2) has roof (21) down, pier stud (2) support down is in the bottom of upper prop (1), roof (21) with bottom plate (11) welding links to each other.
2. Pier (100) according to claim 1, wherein the lower pier stud (2) is a reinforced concrete column and comprises a reinforcement assembly (22) located below the top plate (21) and a concrete column structure (23) surrounding the reinforcement assembly (22), the top plate (21) having a grouting hole (211) for pouring concrete.
3. The pier (100) of claim 2, wherein the top plate (21) further has a vent hole (212) for venting air.
4. The pier (100) of claim 2, wherein the rebar assembly (22) comprises:
first reinforcing bar (221), first reinforcing bar (221) are a plurality of and center on the central axis (201) equipartition of pier stud (2) down, the bottom of first reinforcing bar (221) stretches into basis (300) below ground (200), the top of first reinforcing bar (221) through height adjustment structure (24) with roof (21) link to each other in order to support roof (21), height adjustment structure (24) are used for adjusting roof (21) is relative the mounting height of first reinforcing bar (221).
5. The pier (100) of claim 4, wherein the height adjustment structure (24) comprises:
an internally threaded sleeve (241), the internally threaded sleeve (241) being fixed to the bottom of the top plate (21);
an external thread (242), the external thread (242) being formed at a top end of the first reinforcing bar (221), the top end of the first reinforcing bar (221) being screwed into the internal thread sleeve (241) through the external thread (242).
6. The pier (100) of claim 4, wherein the rebar assembly (22) comprises:
second reinforcing steel bars (222), the second reinforcing steel bars (222) being a plurality of and being uniformly distributed around a central axis (201) of the lower pier stud (2), and the first reinforcing steel bars (221) being arranged around the second reinforcing steel bars (222), each of the second reinforcing steel bars (222) including a first vertical bar section (222a), a first upper transverse bar section (222b) and a first lower transverse bar section (222c), a base circle (202) being centered on the central axis (201) of the lower pier stud (2), the first upper transverse bar section (222b) extending from an upper end of the first vertical bar section (222a) inward in a radial direction of the base circle (202), the first lower transverse bar section (222c) extending from a lower end of the first vertical bar section (222a) inward in the radial direction of the base circle (202), and the first lower transverse bar section (222c) being arranged in parallel with the first upper transverse bar section (222b), the first upper transverse rib section (222b) is supported at the bottom of the top plate (21).
7. The pier (100) of claim 6, wherein the rebar assembly (22) comprises:
a plurality of third reinforcing steel bars (223), the third reinforcing steel bars (223) are uniformly distributed around the central axis (201) of the lower pier column (2), and a plurality of the second reinforcing bars (222) are arranged around a plurality of the third reinforcing bars (223), each of the third reinforcing bars (223) includes a second upper transverse bar section (223a), two second vertical bar sections (223b), and two second lower transverse bar sections (223c), the second upper transverse rib section (223a) extends along the chord line of the base circle (202), the two second vertical rib sections (223b) respectively extend downwards from two ends of the second upper transverse rib section (223a), the lower end of each second vertical rib section (223b) is respectively connected with one second lower transverse rib section (223c), and the second lower transverse rib section (223c) is arranged in parallel with the second upper transverse rib section (223a), the second upper transverse rib section (223a) is supported at the bottom of the top plate (21).
8. The pier (100) of claim 4, wherein the rebar assembly (22) comprises:
horizontal frame (224), horizontal frame (224) includes fourth reinforcing bar (2241) and fifth reinforcing bar (2242), fourth reinforcing bar (2241) is four and the concatenation is the quadrangle frame, fifth reinforcing bar (2242) is two and does two diagonals of quadrangle frame, horizontal frame (224) with first reinforcing bar (221) link to each other.
9. The pier (100) of claim 4, wherein the rebar assembly (22) comprises:
a sixth reinforcing bar (225), said sixth reinforcing bar (225) extending along the cylindrical helix and surrounding a plurality of said first reinforcing bars (221).
10. Pier (100) according to any of claims 1 to 9, wherein the upper prop (1) is a steel tubular concrete column and comprises at least one steel tube (12) above the floor (11) and a concrete core structure (13) filled inside the steel tube (12).
11. The manufacturing method of the bridge pier (100) is characterized in that the bridge pier (100) comprises an upper support column (1) and a lower support column (2), the upper support column (1) is a steel pipe concrete column, a bottom plate (11) is arranged at the bottom of the upper support column (1), the lower support column (2) is a reinforced concrete column, a top plate (21) is arranged at the top of the lower support column (2), and the manufacturing method comprises the following steps: will go up pillar (1) prefabricated molding, will pier stud (2) prefabricated molding down places prefabricated molding's upper prop (1) prefabricated molding the top of pier stud (2) down, the welding roof (21) with bottom plate (11).
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| CN113585051B (en) | 2023-04-07 |
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