CN114808667A - Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure - Google Patents
Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure Download PDFInfo
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- CN114808667A CN114808667A CN202210598071.0A CN202210598071A CN114808667A CN 114808667 A CN114808667 A CN 114808667A CN 202210598071 A CN202210598071 A CN 202210598071A CN 114808667 A CN114808667 A CN 114808667A
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- supporting
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- rigid frame
- frame bridge
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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
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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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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a supporting structure suitable for a No. 0 block of a rigid frame bridge and a construction method thereof. The invention adopts the mode of hoisting and supporting the supporting beam by the supporting platform, thereby accelerating the mounting and dismounting speed of the supporting beam and saving the turnover material; the inclined-pulling structural support beam is formed by bending the embedded parts and the combined connecting rod pieces, so that materials are saved; no. 0 piece adopts the mode of pouring twice, realizes the classification of load, has effectively shared bearing structure's load, and has established two kinds of mechanical structure models of supporting platform hoist and mount and draw to one side, has not only guaranteed stability and safety, still material saving quantity.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a supporting structure suitable for a No. 0 block of a rigid frame bridge and a construction method thereof.
Background
With the increasing investment of the country on the infrastructure, the design of the bridge develops towards large span, the cantilever end of a rigid frame bridge No. 0 block is hung out longer due to the higher height of the bridge, and the thin-wall hollow high pier No. 0 block is usually formed by a method of a bracket and a bowl buckle type bracket. However, for the high pier No. 0 block, the installation of the bracket wastes time and labor, the use of a large number of embedded parts causes the difficulty in repairing the appearance of the pier stud, the material turnover times are less, and the high-altitude dismantling of the bracket at the later stage increases the safety risk.
Disclosure of Invention
Aiming at the defects in the background art, the invention provides a supporting structure suitable for a No. 0 block of a rigid frame bridge and a construction method thereof, and solves the problem that the bracket installation of the No. 0 block in the prior art is time-consuming and labor-consuming.
The technical scheme of the invention is realized as follows:
the utility model provides a be applicable to No. 0 piece bearing structure of rigid frame bridge, includes pre-buried member of pre-buried in the pier stud, releasable connection has supporting platform on being located the inboard pre-buried member of pier stud, and releasable connection has coupling mechanism on being located the pre-buried member in the pier stud outside, all is equipped with a supporting beam that is used for the supporting disk to detain the support on supporting platform and the coupling mechanism.
Furthermore, the embedded rod piece comprises an embedded bolt embedded in the inner side of the pier column and deformed steel bars embedded in the outer side of the pier column.
Furthermore, supporting platform includes the first steel sheet with pre-buried bolt releasable connection and the channel-section steel of perpendicular connection on the first steel sheet, and the channel-section steel both sides are still connected with the first steel sheet through strengthening the connection member.
Furthermore, the opening of the channel steel is upward, and the end support of the supporting beam is placed in the opening of the channel steel.
Further, the support beam is I-shaped steel.
Furthermore, paired bending embedded parts are embedded in the outer side of the pier stud, and the bending embedded parts are connected with a suspension type supporting assembly through a combined connecting rod piece and are used for supporting a supporting beam positioned on the outer side of the pier stud.
Further, the suspension type supporting assembly comprises connecting plates connected with combined type connecting rods, the combined type connecting rods and the connecting plates are arranged in pairs, each pair of connecting plates is hinged with a supporting seat, and a supporting beam is supported and arranged on the supporting seats.
Furthermore, the combined connecting rod piece comprises a plurality of connecting rods which are connected through a sleeve.
Further, the No. 0 block comprises a primary concrete pouring block and a secondary concrete pouring block which are poured in different times.
Furthermore, the connecting mechanism comprises a second steel plate detachably connected with the deformed steel bar, the supporting beam is vertically fixed on the second steel plate, and a reinforcing rib plate is arranged between the supporting beam and the second steel plate.
Furthermore, the pier stud is provided with a groove for arranging a supporting platform and a connecting mechanism.
A construction method suitable for a rigid frame bridge No. 0 block supporting structure comprises the above-mentioned rigid frame bridge No. 0 block supporting structure, and further comprises the following steps:
s1, constructing an embedded part;
s2, processing a supporting platform;
s3, building a support system on the inner side of the pier column: the method comprises the steps of connecting a supporting platform with an embedded bolt, placing a hoisting supporting beam on the supporting platform, and erecting a plate buckle support after fixing a steel member on the supporting beam;
s4, erecting a pier stud outer side support system: connecting a connecting mechanism with deformed steel bars, connecting one end of a supporting beam with the connecting mechanism, connecting the other end of the supporting beam with a suspension type supporting assembly, connecting the suspension type supporting assembly with a bent embedded part, and then erecting a plate buckle support;
s5, prepressing through a counterforce frame;
and S6, casting the No. 0 block twice.
The invention has the beneficial effects that: the invention adopts the mode that the supporting platform is used for hoisting and supporting the I-steel, thereby accelerating the mounting and dismounting speed of the I-steel and saving the turnover material; the inclined-pulling structural support beam is formed by bending the embedded parts and the combined connecting rod pieces, so that materials are saved; the connecting rods are detachably connected, so that the connecting rods are convenient to mount and dismount, and the material turnover is accelerated; the No. 0 block adopts a mode of pouring twice, so that the classification of load is realized, the load of the supporting structure is effectively shared, and the stability and the safety are ensured; two mechanical structure models of the supporting platform hoisting I-steel and the diagonal-pulling I-steel are respectively established, the material characteristics are considered, and the material consumption is saved.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a partial enlarged view of B in FIG. 1;
fig. 5 is a side view of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 5, in a supporting structure for a No. 0 block of a rigid frame bridge according to embodiment 1 of the present invention, pier studs 1 are arranged side by side under the No. 0 block. No. 0 block bearing structure of rigid frame bridge includes the pre-buried member of pre-buried at pier 1 inboard and the pre-buried member in the outside respectively. The inner side of each pier 1 refers to the opposite side of the adjacent pier 1, and the outer side of each pier 1 refers to the outward side of the pier 1 at the end part. Be located detachable connection has supporting platform on the embedded member of pier stud 1 inboard to inboard supporting platform sets up relatively, and a pair of supporting platform goes up to support and has placed a supporting beam 2, in this embodiment, a supporting beam 2 is 40I-steel. And the support beam 2 is provided with a plate buckle support 3 for supporting the middle part of the No. 0 block. Be located detachable connection has coupling mechanism on the pre-buried member in the pier stud 1 outside, also is connected with a supporting beam 2 on the supporting platform, and 2 one end of a supporting beam are connected with supporting platform, the other end outwards overhang sets up. And the support beam 2 is provided with a plate buckle support 3 for supporting the end part of the No. 0 block. This application sets up bearing structure modularization, has not only practiced thrift the material, and still easy to assemble and dismantlement have accelerated the turnover of material. In addition, the No. 0 block is formed by two times of casting, including a first concrete cast block 12 at a lower part of the first casting and a concrete cast block at an upper part of the second casting. Through pouring for a while, with the load hierarchical for bearing structure is enough to support primary concrete placement piece 1, when pouring for the second time, primary concrete placement piece 1 has been can bear the load, makes the required bearing of bearing structure still less, has further simplified the structure, has practiced thrift the material.
Further, the embedded rod piece comprises an embedded bolt 4 embedded in the inner side of the pier stud 1 and deformed steel bars 5 embedded in the outer side of the pier stud 1. The pier stud 1 is provided with a groove 14 corresponding to the positions of the embedded bolt 4 and the deformed steel bar 5, so that a supporting platform and a connecting mechanism can be conveniently installed.
Furthermore, a pair of bending embedded parts 15 are embedded on the outer side of the pier stud 1. The bending embedded part 15 is connected with a suspension type supporting component through a combined type connecting rod piece 9 and is used for supporting the suspension end of the supporting beam 2 positioned on the outer side of the pier stud 1. The bent embedded part 15 is a bent rod piece with an approximate inverted U-shaped structure, one side of the rod piece with the inverted U-shaped structure extends outwards and is connected with the combined connecting rod piece 9, and the combined connecting rod piece 9 is also obliquely arranged so as to be convenient for connecting the suspension type supporting assembly. The combined connecting rod 9 comprises a plurality of connecting rods 92, and the connecting rods 92 are detachably connected through sleeves 91. In this embodiment, the connecting rod 92 and the bending rod are also connected by the sleeve 91. The bent embedded parts 15 and the combined connecting rod pieces 9 form an inclined-pulling structural support beam 2, so that materials are saved. And a plurality of connecting rod 92 between releasable connection, easy to assemble and dismantlement for the turnover of material.
Further, the suspension type supporting assembly comprises connecting plates 10 connected with combined type connecting rods 9, the combined type connecting rods 9 and the connecting plates 10 are arranged in pairs, each pair of the connecting plates 10 is hinged with a supporting seat 11, and the supporting beam 2 is arranged on the supporting seat 11. In this embodiment, the supporting base 11 includes a third steel plate disposed oppositely and connected to the supporting beam 2.
Embodiment 3, which is different from embodiment 1 in that, as shown in fig. 4 and 5, the connecting mechanism includes a second steel plate 16 detachably connected with the deformed steel bar 5, the supporting beam 2 is vertically fixed on the second steel plate 16, and a reinforcing rib plate is further provided between the supporting beam 2 and the second steel plate 16.
s1, construction of embedded parts: when the construction of the top section of the double-limb thin-wall hollow pier column 1 is carried out, a groove with a certain size is reserved, and an embedded nut 4 is embedded in the inner side of the pier column 1, a finish rolling deformed steel bar 5 and a bending embedded part 15 are embedded in the outer side of the pier column;
s2, processing the supporting platform, namely welding and connecting each component of the supporting platform, including a first steel plate 6, a channel steel 7 and a reinforced connecting rod 8;
s3, building a support system on the inner side of the pier stud 1: the method comprises the steps that a first steel plate 6 of a supporting platform is in bolted connection with an embedded bolt 4, a hoisting supporting beam 2, namely 40I-shaped steel, is placed on the supporting platform, and a disc buckle support 3 is erected after a steel member is fixed on the supporting beam 2, wherein the steel member is 20I-shaped steel; i-shaped steel and square timber are erected on the disc buckle support 3, and construction of a No. 0 block inner side support system is completed;
s4, erecting a support system outside the pier stud 1: the construction method comprises the steps of connecting a second steel plate 16 of a connecting mechanism with a deformed steel bar 5 in a threaded manner, welding one end of a 40H-shaped steel with a reinforcing rib plate and the second steel plate 16, welding the other end of a supporting beam with a supporting seat 11 of a suspension type supporting assembly, connecting a connecting plate 10 with the supporting seat 11 through a pin in a hinged manner, welding the connecting plate 10 with a connecting rod 92 at the lower end of a combined connecting rod piece 9, connecting the connecting rod 92 with the other connecting rods 92 through a sleeve 91, connecting the last connecting rod 92 with a bent embedded part 15 through a sleeve, then erecting a disc buckle support 3, erecting H-shaped steel and square timbers on the disc buckle support 3, and completing construction of a No. 0 block outer side support system;
s5, pre-pressing for two times: the method comprises the following steps that vertical finish-rolled deformed steel bars are pre-buried at the tops of the pier studs 1, after an inner side support frame is erected, a reaction frame is installed and is formed by welding steel members, the finish-rolled deformed steel bars penetrate through the reaction frame, a top plate is installed at the upper ends of the finish-rolled deformed steel bars, and the reaction frame props against the top plate; a hydraulic device is arranged at the bottom of the reaction frame and acts on the inner side support of the pier stud 1, wherein the hydraulic device adopts a jack; in the prepressing process, the force of a hydraulic device is transmitted to finish rolling deformed steel bars through a reaction frame and finally transmitted to a pier stud; the other side of the supporting system is transmitted to the reaction frame and then to the 40I-steel and the supporting platform of the inner side supporting system, and the stress state of the inner side supporting system is checked. After the inner side prepressing is finished, the hydraulic device is adjusted to the outer side support, the stress state of the outer side support system is checked in the same mode, and after the support system to be detected meets the stress requirement, construction of No. 0 blocks is started;
s6, pouring the No. 0 block twice: the internal mold support also adopts a disc buckle support system, and after the construction of the No. 0 block is completed, the I-shaped steel, the connecting mechanism and the supporting platform are finally dismantled according to the principle of firstly supporting and then dismantling.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a be applicable to No. 0 piece bearing structure of rigid frame bridge which characterized in that: including pre-buried member in pier stud (1), releasable connection has supporting platform on being located pier stud (1) inboard pre-buried member, and releasable connection has coupling mechanism on being located the pre-buried member in pier stud (1) outside, all is equipped with supporting beam (2) that are used for the supporting disk to detain support (3) on supporting platform and the coupling mechanism.
2. The support structure for a No. 0 block of a rigid frame bridge according to claim 1, wherein: the embedded rod piece comprises an embedded bolt (4) embedded on the inner side of the pier stud (1) and deformed steel bars (5) embedded on the outer side of the pier stud (1).
3. The support structure for a No. 0 block of a rigid frame bridge according to claim 2, wherein: the supporting platform comprises a first steel plate (6) and a first channel steel (7), wherein the first steel plate (6) is detachably connected with the embedded bolt (4), the channel steel (7) is perpendicularly connected to the first steel plate (6), and two sides of the channel steel (7) are connected with the first steel plate (6) through a reinforced connecting rod piece (8).
4. The support structure for a No. 0 block of a rigid frame bridge according to claim 3, wherein: the opening of channel-section steel (7) upwards, it places in the opening of channel-section steel (7) to prop up supporting beam (2) tip support.
5. The supporting structure suitable for the No. 0 block of the rigid frame bridge according to any one of claims 2 to 4, wherein: the supporting beam (2) is made of I-shaped steel.
6. The support structure for a No. 0 block of a rigid frame bridge of claim 5, wherein: the pier stud (1) outside is still pre-buried have mated bending embedded part (15), and bending embedded part (15) is connected with suspension supporting component through combination formula connecting rod piece (9) and is used for supporting a supporting beam (2) that is located the pier stud (1) outside.
7. The support structure for a No. 0 block of a rigid frame bridge according to claim 6, wherein: the suspension type supporting assembly comprises a connecting plate (10) connected with a combined type connecting rod piece (9), the combined type connecting rod piece (9) and the connecting plate (10) are arranged in pairs, each pair of connecting plates (10) is hinged with a supporting seat (11), and a supporting beam (2) is supported and arranged on the supporting seats (11).
8. The support structure for a No. 0 block of a rigid frame bridge according to claim 6 or 7, wherein: the combined connecting rod piece (9) comprises a plurality of connecting rods (92), and the connecting rods (92) are connected through sleeves (91).
9. A support structure for a No. 0 block of a rigid frame bridge according to any one of claims 1 to 4, 6 or 7, wherein: the No. 0 block comprises a primary concrete pouring block (12) and a secondary concrete pouring block which are formed by pouring in a grading manner.
10. A construction method suitable for a No. 0 block supporting structure of a rigid frame bridge is characterized by comprising the following steps of: the supporting structure for the No. 0 block of the rigid frame bridge comprises any one of claims 1 to 9, and further comprises the following steps:
s1, constructing an embedded part;
s2, processing a supporting platform;
s3, erecting a support system on the inner side of the pier column (1): the method comprises the steps of connecting a supporting platform with embedded bolts (4), placing a hoisting supporting beam (2) on the supporting platform, and erecting a disc buckle support (3) after fixing a steel member on the supporting beam (2);
s4, erecting a support system at the outer side of the pier column (1): the method comprises the steps of connecting a connecting mechanism with deformed steel bars (5), connecting one end of a supporting beam (2) with the connecting mechanism, connecting the other end of the supporting beam with a suspension type supporting assembly, connecting the suspension type supporting assembly with a bending embedded part (15), and then erecting a disc buckle support (3);
s5, prepressing through a counterforce frame;
and S6, casting the No. 0 block twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210598071.0A CN114808667A (en) | 2022-05-30 | 2022-05-30 | Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210598071.0A CN114808667A (en) | 2022-05-30 | 2022-05-30 | Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure |
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| CN114808667A true CN114808667A (en) | 2022-07-29 |
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| CN202210598071.0A Pending CN114808667A (en) | 2022-05-30 | 2022-05-30 | Supporting structure suitable for No. 0 block of rigid frame bridge and construction method of supporting structure |
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| CN113818362A (en) * | 2021-10-19 | 2021-12-21 | 中交一公局第二工程有限公司 | Non-landing super-long assembly type bracket and hanging basket integrated structure and construction method |
| CN215925691U (en) * | 2021-08-30 | 2022-03-01 | 中交三公局第二工程有限公司 | Bearing support for casting No. 0 block of bridge |
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