CN213389745U - Cantilever bridge side span formwork system - Google Patents
Cantilever bridge side span formwork system Download PDFInfo
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- CN213389745U CN213389745U CN202021925007.1U CN202021925007U CN213389745U CN 213389745 U CN213389745 U CN 213389745U CN 202021925007 U CN202021925007 U CN 202021925007U CN 213389745 U CN213389745 U CN 213389745U
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Abstract
The utility model relates to a cantilever bridge side span formwork system, which belongs to the technical field of bridge construction, wherein a pre-buried steel plate is arranged at the top of a side span buttress, a mounting support frame is welded on the pre-buried steel plate, a reinforcing support is arranged between adjacent support frames, a temporary fixing pier, a top longitudinal beam, a support longitudinal beam, a rear upper cross beam, a rear lower cross beam and a front cross beam are arranged between the support frames and a poured bridge section, and a transverse distribution beam is arranged on a bottom longitudinal beam; the bottom die is mainly paved on the transverse distribution beam, the other part of the bottom die is paved between the support frame and the permanent support and is supported by the inner temporary support, the outer die support is arranged on the support longitudinal beam, the flange bottom die and the outer die are arranged on the outer die support and are respectively fixed through the opposite pull rods, the bottom die is provided with the inner die, and the top support frame of the side span buttress and the poured bridge section are used as gravity support structures for construction of the side span closure section of the cantilever bridge, so that the hoisting workload is reduced, and the construction period and the cost are reduced.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, especially, relate to cantilever bridge side span formwork system.
Background
With the continuous development of social economy in China, bridge construction enters a high-speed development period, the construction investment scale of the current roads and bridges is larger and larger, the requirements on related construction technical levels are higher and higher, and the structural complexity is deepened gradually. The cantilever beam bridge refers to a beam bridge which takes a simple beam with one end or two ends freely hanging outwards as a main bearing component of an upper structure. The cantilever beam bridge is generally a statically determinate structure, the internal force of the structure is not influenced by the deformation of the foundation, and the requirement on the foundation is lower. In the porous bridge, only one support needs to be arranged on the pier, so that the size of the pier is correspondingly reduced, the material consumption of basic engineering is also saved, and the porous bridge is widely applied to bridge construction.
The cantilever bridge is not easy to adopt assembly type construction, and a hanging basket method is usually adopted when the cantilever bridge with a large span is poured, so that the cantilever operation is segmented on site. For example, in the side span closure segment construction, the prior patent CN103556578B utilizes the side span pier top and the hanging basket as the gravity support structure for casting the continuous beam straight-line segment and the side span closure segment by the cantilever, instead of setting up the side span cast-in-place support on the ground as the gravity support structure of the concrete project. However, the patent only describes how to support the outer mold, but does not describe how to support the inner mold, and for the support of the inner mold, a complex hanging basket system needs to be erected, and the hanging basket system is cast in situ on a support template which is expensive, complicated to build and slow in speed.
Therefore, it is important to find a cantilever bridge side-span formwork system with high construction efficiency, good economic benefit and simple and stable structure and a construction method thereof.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the above-mentioned defect, provide a cantilever bridge sidespan formwork system.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses a cantilever bridge side span formwork system, including the side span buttress, take and establish one row of bottom longeron on having pour bridge section and side span buttress, the mid-mounting of side span buttress installation has the support frame, and the top of side span buttress is split into two installation positions by the support frame, the edge from the strut to side span buttress top surface is equipped with interior temporary support in proper order on each installation position, permanent support, outer temporary support, on the longeron of bottom, horizontal distribution roof beam and die block have been erect in proper order to the longeron of bottom, it has erect support longeron and top longeron to pour bridge section and side span buttress shanghai, install the centre form on the die block.
Furthermore, the support frame is provided with an upper support beam, a middle support beam and a lower support beam, and the side surface of the support frame is provided with an end die.
Furthermore, the inner die is arranged above the bottom die in a hanging mode through support angle steel, one end of the support angle steel is arranged on a support cross beam of a lower channel of the support frame, and the other end of the support angle steel is fixed above a poured bridge section bottom plate through an anchoring rod.
Further, the centre form includes support angle steel, centre form, inside form, goes up centre form, angle connection and interior support down, and centre form, last centre form and two inside forms constitute a rectangular cylinder down, and its corner is fixed through angle connection, and angle connection is on the centre form down to the support angle steel, and angle connection is equipped with two, and angle connection at edge of support angle steel and last centre form is connected through interior support between the angle connection.
Furthermore, two embedded steel plates are arranged at the top of the side span buttress, the support frame is composed of two support longitudinal beams and an upper support cross beam, a middle support cross beam and a lower support cross beam which are arranged between the support longitudinal beams, the bottom of each support longitudinal beam is arranged on the embedded steel plates, the two support frames are arranged, and the two support frames are connected through a reinforcing support.
Furthermore, the end part of the poured bridge section is provided with a top plate and a bottom plate, a temporary fixing pier is installed on the top plate, rear hanging strips are arranged on the top plate and the bottom plate, the two ends of the top longitudinal beam are connected to the temporary fixing pier and a supporting beam on the upper path of the supporting frame respectively, the two ends of the support longitudinal beam are connected to the supporting beam on the middle path of the supporting frame and the hanging strips arranged on the top plate respectively, and the two ends of the bottom longitudinal beam are connected to the outer temporary support and the rear hanging strips arranged on the bottom plate.
Furthermore, front hanging strips are arranged in the middle of the top longitudinal beam and the bottom longitudinal beam, and a front cross beam is arranged at the bottom of each front hanging strip.
Furthermore, an outer mold support is erected on the support longitudinal beam, and a flange bottom mold and an outer mold are installed on the outer mold support.
Furthermore, a bottom die is laid between the support frame and the permanent support, and the bottom die is abutted against the temporary support.
The utility model discloses following beneficial effect has:
the side span closure segment construction is carried out by adopting a hanging basket-free mode, and the side span buttress top support frame and the poured bridge segment are used as gravity support structures for the side span closure segment construction of the cantilever bridge, so that the hoisting workload is reduced, and the construction period and the construction cost are reduced.
The support frame is formed by welding the support longitudinal beam and the support cross beam, the structure is simple, synchronous construction of the side span section cast-in-place beams on two sides of the side span buttress is facilitated, the construction period is shortened, the side span buttress is reinforced through the reinforcing support, and the stability of the support structure is further improved.
Need not inner support frame during centre form installation, the structure is firm simple, simple to operate, reduces steel use amount and can high-efficient quick construction simultaneously.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a cantilever bridge edge-span formwork system;
FIG. 2 is a schematic view of a pier top support frame;
FIG. 3 is a schematic view of a side span buttress top support system;
FIG. 4 is a schematic view of a template holder system;
FIG. 5 is a schematic view of a bottom die arrangement;
FIG. 6 is a schematic illustration of a flange bottom die and an outer die arrangement;
FIG. 7 is a schematic cross-sectional view of the inner mold;
FIG. 8 is a schematic cross-sectional view of a cantilever bridge side-span formwork system;
in the drawings, the components represented by the respective reference numerals are listed below:
1-reinforcing support; 2-supporting the beam; 3-end mold; 4-supporting the longitudinal beam; 5, pre-burying a steel plate; 6-inner temporary support; 7-permanent support; 8-an outer temporary support; 9-top stringer; 10-bottom die; 11-bottom stringer; 12-transverse distribution beams; 13-front sling; 14-support angle steel; 15-a bracket stringer; 16-a lower inner mold; 17-a front cross beam; 18-temporary anchor blocks; 19-rear upper beam; 20-an anchor rod; 21-rear sling; 22-rear lower beam; 23-side span buttress; 24-an inner mold; 25-an outer mold support; 26-inner side mold; 27-upper inner mold; 28-connecting angle steel; 29-inner support; 30-a bridge section is poured; 31-flange bottom die; 32-outside die.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Welding technical requirement between the reinforcing bar, concrete placement main points, plain soil tamp, pile foundation construction quality standard etc, the utility model discloses do not describe again tiredly, the key explanation the utility model discloses the embodiment of structure.
Referring to fig. 1-8, the present invention relates to a cantilever bridge side span formwork system:
the top of the side span buttress 23 is provided with two pre-buried steel plates 5, and weld the support longerons 4 on two pre-buried steel plates 5, link together through three horizontal setting of the way supporting beam 2 between two support longerons 4 on the corresponding position on two pre-buried steel plates 5, constitute the support frame by support longeron 4 and supporting beam 2, later link together through strengthening support 1 between the support frame that forms, and cut apart into two parts with the top of side span buttress 23, have set gradually interior temporary support 6 by support frame to side span buttress 23 edge in each part, permanent support 7, outer temporary support 8.
The end of the poured bridge section 30 has a top plate and a bottom plate, wherein a rear upper beam 19 is fixed below the top plate by a rear sling 21, a rear lower beam 22 is fixed below the bottom plate by a rear sling 21, wherein a bottom longitudinal beam 11 is erected on the rear lower beam 22 and an outer temporary support 8, wherein the bottom longitudinal beam 11 is provided with a row, a support longitudinal beam 15 is erected between a support beam 2 and the rear upper beam 19 in the middle on the support frame, a temporary fixing pier 18 is further arranged on the upper surface of the top plate, a top longitudinal beam 9 is erected on the temporary fixing pier 18 and the support beam 2 positioned at the top of the support frame, a front sling 13 is installed in the middle area of the corresponding top longitudinal beam 9 and support longitudinal beam 15, a front beam 17 is fixed on the front sling 13, wherein the rear lower beam 22 of the front beam 17 is at the same horizontal height, a row of transverse distribution beams 12 is erected on the bottom longitudinal beam 11, a bottom die 10 is laid, a bottom die 10 is also laid between the support frame and the permanent support 7, the bottom die 10 is supported by the inner temporary support 6, an outer die support 25 is erected on the support longitudinal beam 15, a flange bottom die 31 and an outer side die 32 are mounted on the outer die support 25, the cross section of the specific outer die support 25 is in a step shape, the outer side die is mounted on the outer surface of the specific outer die support 25, the flange bottom die 31 is arranged on the step surface, the specific outer die support is tensioned and fixed through a pull rod, and the support longitudinal beam 15 abuts against the lower surface of the flange bottom die 31.
The internal mold 24 is arranged above the bottom mold 10 through the suspension of the support angle steel 14, one end of the support angle steel 14 is arranged on the support beam 2 at the lowest part of the support frame, the other end of the support angle steel is fixed above the bottom plate of the poured bridge section 30 through the anchoring rod 20, and the end mold 3 is arranged on the side surface of the support frame.
The inner mold 24 includes support angles 14, a lower inner mold 16, inner side molds 26, an upper inner mold 27, tie angles 28, and inner supports 29.
The lower inner mold 16, the upper inner mold 27 and the two inner side molds 26 form a rectangular cylinder, and the corners thereof are fixed by connecting angle steels 28.
The support angle 14 is connected to the lower inner mold 16, and two support angles 14 are provided and connected to two connecting angles 28 at two edges of the upper inner mold 27 through inner supports 29.
The bottom die 10 adopts a multi-layer wood clamp die plate, and the end die 3 adopts a wood die plate.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," 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 do not necessarily 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.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. Cantilever bridge side span formwork system, including side span buttress (23), its characterized in that: still including setting up one row of bottom longeron (11) on having pour bridge section (30) and side span buttress (23), the mid-mounting of side span buttress (23) installation has the support frame, and the top of side span buttress (23) is split into two installation positions by the support frame, the edge from the strut to side span buttress (23) top surface is equipped with interior temporary support (6) in proper order on each installation position, permanent support (7), outer temporary support (8), on bottom longeron (11), horizontal distribution roof beam (12) and die block (10) are erect in proper order in bottom longeron (11), it has still erect support longeron (15) and top longeron (9) to pour bridge section (30) and side span buttress (23), install centre form (24) on die block (10).
2. The cantilever bridge side span formwork system according to claim 1, wherein the support frame is provided with an upper, a middle and a lower supporting beams (2), and the side surface of the support frame is provided with an end formwork (3).
3. The cantilever bridge side span formwork system according to claim 2, wherein the inner formwork (24) is suspended above the bottom formwork (10) by support angle steel (14), one end of the support angle steel (14) is arranged on the support beam (2) of the lower course of the support frame, and the other end is fixed above the bottom plate of the poured bridge section (30) by the anchoring rod (20).
4. The cantilever bridge side span formwork system according to claim 3, wherein the inner mold (24) comprises support angle steel (14), a lower inner mold (16), inner side molds (26), an upper inner mold (27), connecting angle steel (28) and inner supports (29), the lower inner mold (16), the upper inner mold (27) and the two inner side molds (26) form a rectangular cylinder, the corners of the rectangular cylinder are fixed through the connecting angle steel (28), the support angle steel (14) is connected to the lower inner mold (16), two support angle steel (14) are arranged, and the support angle steel (14) and the connecting angle steel (28) at the edge of the upper inner mold (27) are connected through the inner supports (29).
5. The cantilever bridge side span formwork system according to claim 1 or 2, wherein the top of the side span buttress (23) is provided with two embedded steel plates (5), the support frame is composed of two support longitudinal beams (4) and an upper support cross beam, a middle support cross beam and a lower support cross beam (2) which are arranged between the support longitudinal beams (4), the bottom of each support longitudinal beam (4) is arranged on the embedded steel plates (5), the number of the support frames is two, and the two support frames are connected through the reinforcing support (1).
6. The cantilever bridge side span formwork system according to claim 2, wherein the end part of the poured bridge section (30) is provided with a top plate and a bottom plate, a temporary fixing pier (18) is installed on the top plate, rear hanging strips (21) are arranged on the top plate and the bottom plate, two ends of a top longitudinal beam (9) are respectively connected to the temporary fixing pier (18) and a supporting cross beam (2) on the upper way of the supporting frame, two ends of a support longitudinal beam (15) are respectively connected to the supporting cross beam (2) on the middle way of the supporting frame and the hanging strips (21) arranged on the top plate, and two ends of a bottom longitudinal beam (11) are respectively connected to an outer temporary support (8) and the rear hanging strips (21) arranged on the.
7. The cantilever bridge side span formwork system according to claim 6, wherein the outer formwork support (25) is erected on the support longitudinal beam (15), and the flange bottom formwork (31) and the outer formwork (32) are installed on the outer formwork support (25).
8. The cantilever bridge side-span formwork system according to claim 6, wherein the top longitudinal beam (9) and the bottom longitudinal beam (11) are provided with front suspension belts (13) in the middle, and the bottom of the front suspension belts (13) is provided with a front cross beam (17).
9. Cantilever bridge edge-span formwork system according to claim 1, characterized in that between the support frame and the permanent support (7) also a bottom formwork (10) is laid, which bottom formwork (10) rests on the temporary support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925007.1U CN213389745U (en) | 2020-09-04 | 2020-09-04 | Cantilever bridge side span formwork system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021925007.1U CN213389745U (en) | 2020-09-04 | 2020-09-04 | Cantilever bridge side span formwork system |
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| Publication Number | Publication Date |
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| CN213389745U true CN213389745U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021925007.1U Active CN213389745U (en) | 2020-09-04 | 2020-09-04 | Cantilever bridge side span formwork system |
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| CN (1) | CN213389745U (en) |
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