CN113737665A - Pier top supporting system for continuous beam side-span cast-in-place section - Google Patents
Pier top supporting system for continuous beam side-span cast-in-place section Download PDFInfo
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- CN113737665A CN113737665A CN202110875647.9A CN202110875647A CN113737665A CN 113737665 A CN113737665 A CN 113737665A CN 202110875647 A CN202110875647 A CN 202110875647A CN 113737665 A CN113737665 A CN 113737665A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 230000005012 migration Effects 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 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
- E01D21/10—Cantilevered erection
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Abstract
The utility model relates to a construction technical field, this cast-in-place section mound top braced system of continuous beam side span is including extending the frame and connecting extend the support steel of frame and mound top, extend the frame setting at the front end of main truss, the back end of hanging the basket passes through No. N piece and track support, and the front end passes through extend the frame with the supporting structure who supports the steel and form supports, this system not only can improve work efficiency when the side mound is higher, has reduced working cost, and effectual solved the basket of hanging receives the restriction of No. N piece length moreover, and unable migration is too much, otherwise dangerous problems such as drop easily, extend the level setting mode of frame and support the vertical setting mode of steel simultaneously, make entire system more stable, more firm.
Description
Technical Field
The utility model relates to a construction technical field especially relates to a cast-in-place section mound top braced system of continuous beam side span.
Background
In construction, bridge, aeronautical and pipeline projects, a beam with three or more supports, called a continuous beam, is often encountered.
When the side span section in the continuous beam is poured, the traditional mode is that the cantilever casting method is adopted for construction, the side span cast-in-place section and the folding section are mostly cast-in-place by floor type supports or pier-side brackets, after the side piers are poured from the No. 0 block in sequence, finally the No. N block and the side pier are connected into a whole by the folding section through the parts poured by the supports or the brackets, the process needs to be practical for the transition of the hanging basket and the erection of the supports, especially when the side piers are higher, the floor type supports are greatly erected, great difficulty and great safety risk exist in the high altitude erection, the construction period of the mode is long, and the cost is very high.
Disclosure of Invention
To solve the technical problem or at least partially solve the technical problem, the present disclosure provides a continuous beam side-span cast-in-place section pier top support system.
The utility model provides a cast-in-place section mound top braced system of continuous beam side span, hang the basket and install at the top of N number piece to the front end stretches out to the mound top, is provided with the track between hanging basket and the N number piece, including extending the frame and connecting extend the support steel of frame and mound top, extend the frame and set up the front end at the main truss, hang the back end of basket and support through N number piece and track, and the front end passes through extend the frame with the bearing structure that the support steel constitutes supports.
Optionally, the extension frame is horizontally arranged, and the top of the support steel is vertically fixed to the front end of the extension frame.
Optionally, the bottom die is arranged at the bottom of the N block, and the bottom die is fixed at the bottom of the N block through a connecting structure.
Optionally, coupling mechanism includes preceding bottom end rail and back bottom end rail, and preceding bottom end rail and back bottom end rail set up respectively the front side and the rear side of die block bottom still include two first preceding entablatures and the entablature before the second that set up the anterior segment of main truss, first preceding entablature with preceding bottom end rail passes through the jib and connects, the bottom anchor of back bottom end rail and No. N piece.
Optionally, the first front upper cross beam and the second front upper cross beam are both located at a front section of the main truss, and the first front upper cross beam and the second front upper cross beam are respectively located at a rear side and a front side of the front node base.
Optionally, a support which is matched with the bottom die to support the beam body together is arranged on one side, facing the N-shaped block, of the pier top.
Optionally, river sand is filled around the support, and a backing plate is laid on the river sand after the river sand is leveled by mortar.
Optionally, the rear end of the bottom die is closely attached to the bottom of the N-shaped block, and the front end of the bottom die is as high as the cushion plate.
Optionally, the sum of the lengths of the front section of the main truss and the extension frame is greater than the distance from the N-shaped block to the pier top.
Optionally, a counterweight water tank is arranged on the rear section of the cradle, and after the extension frame and the support steel support the front section of the cradle on the pier top, the counterweight water tank is removed.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the utility model provides a cast-in-place section mound top braced system of continuous beam side span not only can improve work efficiency when the side mound is higher, has reduced working cost, and effectual solved the string basket moreover and received the restriction of N number block length, and unable migration is too much, otherwise dangerous problems such as drop easily, the level that extends the frame simultaneously sets up the mode and supports the vertical mode that sets up of steel, makes entire system more stable, more firm.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural view of a pier top supporting system of a continuous beam side-span cast-in-place section according to an embodiment of the disclosure;
fig. 2 is a schematic structural view of a bottom die in the continuous beam side-span cast-in-place section pier top support system according to the embodiment of the disclosure when the bottom die is tightly attached to an N-shaped block;
FIG. 3 is a schematic structural diagram of a continuous beam side-span cast-in-place section pier top support system without an extension frame and support steel according to the embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a continuous beam side-span cast-in-place section pier top support system in pouring operation according to the embodiment of the disclosure.
Wherein, 11, the extension frame; 12. supporting steel; 2. hanging a basket; 21. a main truss; 22. a front node base; 23. a counterweight water tank; 3. block number N; 4. heading; 5. bottom die; 6. a connecting mechanism; 61. a front lower cross beam; 62. a rear lower cross beam; 63. a first front upper cross member; 64. a second front upper cross member; 65. a boom; 7. a track; 8. river sand; 9. a support; 10. a side form support frame; 101. side span cast-in-place section; 102. and (5) closing the sections.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
In construction, bridge, aeronautical and pipeline projects, a beam with three or more supports, called a continuous beam, is often encountered.
The prior art is mainly the construction of the cantilever casting method, the cast-in-place section of side span and the closure section are mostly cast-in-place by adopting a floor type support or a bracket beside a pier, after the side pier is sequentially poured from a No. 0 block, and finally the part poured on the No. N block and the side pier through the support or the bracket is connected into a whole by the closure section, the process is not only practical to the pushing of the hanging basket, but also needs the erection of the support, especially when the side pier is higher, the investment for erecting the floor type support is larger, the erection in high altitude has great difficulty and great safety risk, the construction period of the method is long, and the cost is also very high.
Based on this, this embodiment provides a cast-in-place section mound top braced system of continuous beam side span, can be through improving the structure to hanging the basket, directly will hang basket and side mound and be connected fixedly, need not set up the support on the side mound. This is illustrated in detail by the following specific examples:
referring to fig. 1, the present embodiment provides a continuous beam side-span cast-in-place section pier top support system including an extension frame 11 connected to a front end of a main girder 21 and a support steel 12 connected to the extension frame 11 and supported on a pier top 4.
Wherein the extension frame 11 horizontally extends along the direction of the main truss 21, and the extending end is connected with the support steel 12, and the support steel 12 is vertically arranged.
Preferably, the extension frame 11 is connected with the main truss 21 by welding, and meanwhile, the connection between the support steel 12 and the extension frame 11 is also connected by welding, it should be noted that the connection between the extension frame 11 and the main truss 21 as well as the connection between the support steel 12 can also be in a pin connection or bolt connection mode, and only the extension frame 11 and the support steel 12 as well as the main truss 21 need to be connected and fixed together, through the arrangement of the extension frame 11 and the support steel 12, not only can the working efficiency be improved when the side pier is higher, and the working cost is reduced, but also the problem that the cradle 2 is restricted by the length of the N number block 3, cannot be migrated too much, otherwise, the cradle is easy to drop and the like is effectively solved, and meanwhile, the horizontal arrangement mode of the extension frame 11 and the vertical arrangement mode of the support steel 12 make the whole system more stable and more firm.
In this embodiment, it is preferable that the pier top 4 is a stepped structure, the bottom end of the support steel 12 is supported at the highest point on the pier top 4, and the support 9 for supporting the beam body is arranged on the platform at a low height.
Referring to fig. 2 and 3, after first preceding entablature 63 and preceding bottom end rail 61 on hanging basket 2 are connected through the jib, the work of making level of die block 5 is accomplished to the antedisplacement of rethread hanging basket 2, hang basket 2 moves the back forward, extension 11 and supporting steel 12 through the main truss 21 front side are connected with mound top 4, die block 5 also begins to paste tightly with No. N piece 3 through the mode of anchor, the river sand 8 has been filled around support 9 this moment, and it has laid the backing plate to make level the back with the mortar on the river sand 8, it is the same with the backing plate height that the top plane of die block 5 is to be noticed, the setting can make when demolising the supporting structure like this, and is convenient and fast more, accomplish preliminary support work of demolising through the mobility of river sand 8, and efficiency is higher.
The river sand 8 is used because the river sand is a material which is easily obtained in the local area when a bridge is built, and the local material can greatly save the workload of an engineering team during construction.
It should be noted that the first front upper beam 63 and the second front upper beam 64 are both located at the front section of the main truss 21, and the first front upper beam 63 and the second front upper beam 64 are respectively located at the rear side and the front side of the front node base 22, so that the front lower beam 61 can be stably connected before and only after the cradle 2 is displaced by the two front upper beams at different positions.
During specific implementation, the second front upper cross beam 64 can be located on the extension frame 11, the cradle 2 slides and translates from the N-shaped block 3 towards the pier top 4 by using the rail 7, firstly, the bottom die 5 is pulled down to approach a horizontal position through the diagonal pulling work of the first front upper cross beam 63 and the hanger rod 65 connected with the front lower cross beam 61, then the cradle 2 moves forwards, and at the moment, the first front upper cross beam 63 enables the bottom die 5 to be attached to the bottom of the N-shaped block 3.
It should be noted that, because the length of the track 7 is limited by the block No. 0, the sliding translation distance of the cradle 2 is also limited, and in addition, in consideration of comprehensive safety and other factors, when the extension frame 11 on the cradle 2 moves to the position right above the pier top 4, the upright post of the cradle 2 does not exceed the front end face of the block No. N3, that is, the sum of the lengths of the front section of the main truss 21 and the extension frame 11 is greater than the distance between the block No. N3 and the pier top 4, and such limitation can make the cradle 2 more stable and reliable when being supported and fixed.
Wherein, hang basket 2 before the front end is connected with mound top 4 through extending frame 11 and supporting steel 12, placed counter weight water tank 23 on hanging basket 2's the back anchor all the time for prevent that hang basket 2 from stretching out too much from No. N piece 3, lead to its accident such as falling that leans forward.
Preferably, the front lower cross beam 61, the rear lower cross beam 62, the first front upper cross beam 63 and the second front upper cross beam 64 are all i-shaped steel, so that the bottom die 5 can provide stable support when the side span cast-in-place section 101 is poured, and the cost can be reduced.
After the opposite-side span cast-in-place section 101 is poured, the hanging basket 2 can continue to use the current position without moving, and the closure sections 102 are poured together.
Referring to fig. 4, when pouring, the side form support frames 10 are provided as support devices on both sides of the beam, so that the smooth pouring and forming of the beam can be ensured more stably.
The specific implementation manner and implementation principle are the same as those of the above embodiments, and the same or similar technical effects can be brought, and therefore, the detailed description is omitted here, and specific reference may be made to the description of the continuous beam side-span cast-in-place section pier top support system embodiment.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a cast-in-place section mound top braced system is striden to continuous beam side, hangs basket (2) and installs the top at N number piece (3) to the front end stretches out to mound top (4), is provided with track (7) between hanging basket (2) and N number piece (3), its characterized in that, including extending frame (11) and connecting extend support steel (12) of frame (11) and mound top (4), extend the frame (11) and set up the front end at main truss (21), the back end of hanging basket (2) is supported through N number piece (3) and track (7), and the front end passes through extend frame (11) with the bearing structure that support steel (12) are constituteed supports.
2. The continuous beam side-span cast-in-place section pier top support system according to claim 1, wherein the extension frame (11) is horizontally arranged, and the top of the support steel (12) is vertically fixed with the front end of the extension frame (11).
3. The continuous beam side-span cast-in-place section pier top supporting system according to claim 1, characterized in that a bottom die (5) is arranged at the bottom of the N-shaped block (3), and the bottom die (5) is fixed at the bottom of the N-shaped block (3) through a connecting structure (6).
4. The continuous beam side-span cast-in-place section pier top support system according to claim 3, characterized in that the connecting mechanism (6) comprises a front lower beam (61) and a rear lower beam (62), the front lower beam (61) and the rear lower beam (62) are respectively arranged on the front side and the rear side of the bottom die (5) bottom, and the system further comprises a first front upper beam (63) and a second front upper beam (64) which are respectively arranged on the front section of the main truss (21), the first front upper beam (63) and the front lower beam (61) are connected through a hanger rod (65), and the rear lower beam (62) is anchored with the bottom of the N-number block (3).
5. The continuous beam side-span cast-in-place section pier top support system according to claim 4, wherein the first front upper cross beam (63) and the second front upper cross beam (64) are both located at the front section of the main truss (21), and the first front upper cross beam (63) and the second front upper cross beam (64) are respectively located at the rear side and the front side of the front node base (22).
6. The continuous beam side-span cast-in-place section pier top supporting system according to claim 3, characterized in that a support (9) matched with the bottom die (5) to support a beam body is arranged on one side of the pier top (4) facing the N-shaped block (3).
7. The continuous beam side-span cast-in-place section pier top supporting system according to claim 6, characterized in that the periphery of the support (9) is filled with river sand (8), and a backing plate is laid on the river sand (8) after being leveled by mortar.
8. The continuous beam side-span cast-in-place section pier top supporting system according to claim 7, characterized in that the rear end of the bottom die (5) is attached to the bottom of the N-shaped block (3), and the front end is at the same height as the base plate.
9. The continuous beam side-span cast-in-place section pier top support system according to claim 1, wherein the sum of the lengths of the front section of the main truss (21) and the extension frame (11) is larger than the distance from the N-number block (3) to the pier top (4).
10. The continuous beam side-span cast-in-place section pier top support system according to claim 1, characterized in that a counterweight water tank (23) is arranged on the rear section of the cradle (2), and the counterweight water tank (23) is removed after the extension frame (11) and the support steel (12) support the front section of the cradle (2) on the pier top (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110875647.9A CN113737665A (en) | 2021-07-30 | 2021-07-30 | Pier top supporting system for continuous beam side-span cast-in-place section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110875647.9A CN113737665A (en) | 2021-07-30 | 2021-07-30 | Pier top supporting system for continuous beam side-span cast-in-place section |
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| CN113737665A true CN113737665A (en) | 2021-12-03 |
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| CN202110875647.9A Pending CN113737665A (en) | 2021-07-30 | 2021-07-30 | Pier top supporting system for continuous beam side-span cast-in-place section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855621A (en) * | 2022-05-13 | 2022-08-05 | 中铁第五勘察设计院集团有限公司 | Closure construction method for existing line bridge striding upwards and protection device |
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| CN112195797A (en) * | 2020-08-21 | 2021-01-08 | 中铁五局集团第四工程有限责任公司 | Closure construction method for continuous beam bridge |
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| CN113123242A (en) * | 2021-04-14 | 2021-07-16 | 四川瑞云建设工程有限公司 | Continuous steel structure cast-in-place section and closure section simultaneous pouring construction structure and construction method |
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Application publication date: 20211203 |