CN212801237U - A no bottom plate centre form support system for cable-stay bridge concrete girder - Google Patents
A no bottom plate centre form support system for cable-stay bridge concrete girder Download PDFInfo
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- CN212801237U CN212801237U CN202021252305.9U CN202021252305U CN212801237U CN 212801237 U CN212801237 U CN 212801237U CN 202021252305 U CN202021252305 U CN 202021252305U CN 212801237 U CN212801237 U CN 212801237U
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Abstract
The utility model belongs to the technical field of the template is once only pour to cable-stay bridge concrete girder full section, specifically a no bottom plate centre form support system for cable-stay bridge concrete girder. The hanging basket is characterized by comprising two slideways welded on the inner side of a front cross beam or a middle cross beam of a hanging basket, a support system is arranged above the two slideways, the bottom of the support system is connected with a secondary longitudinal beam of the hanging basket through a pin shaft support system, the top of the support system is fixedly connected with a longitudinal distribution beam, the longitudinal distribution beam spans between the two slideways, two ends of the longitudinal distribution beam are respectively positioned right above the two slideways, the upper part of the longitudinal distribution beam is fixedly connected with the lower end of a suspender, the upper end of the suspender is fixedly connected with a jack installed on an anchor beam, and the anchor beam is used as a main stress rod piece of the support system and supported on the front cross beam of the hanging. The top of the longitudinal distribution beam is fixed with a template support system, and the top of the template support system is provided with a template. Reduces the construction process and labor input and shortens the construction period.
Description
Technical Field
The utility model belongs to the technical field of the template is once only pour to cable-stay bridge concrete girder full section, specifically a no bottom plate centre form support system for cable-stay bridge concrete girder.
Background
At present, the concrete main beams of the cable-stayed bridge with two middle box chambers without bottom plates are common, and for the main beams with diaphragm beams, bottom molds and supports of top plates of the two middle box chambers need to be completely detached and placed on a supporting platform to walk and hang a basket. When dismantling template and support, because unable hoisting equipment that adopts, must artifically dismantle template and support, the construction degree of difficulty is great to girder construction segment is more, has increased a large amount of repetitive work volume and corresponding safe risk, has increased construction cycle simultaneously, has increased construction cost in the intangible.
Disclosure of Invention
The utility model discloses a solve above-mentioned problem, provide a no bottom plate centre form support system for cable-stay bridge concrete girder.
The utility model adopts the following technical proposal: the bottom plate-free internal mold support system comprises two slideways welded on the inner side of a front cross beam or a middle cross beam of a hanging basket, wherein the two slideways are symmetrically arranged, a support system is arranged above the two slideways, the bottom of the support system is connected with a secondary vertical beam of the hanging basket through a pin shaft support system, the top of the support system is fixedly connected with a longitudinal distribution beam, the longitudinal distribution beam spans between the two slideways, two ends of the longitudinal distribution beam are respectively positioned right above the two slideways, the upper part of the longitudinal distribution beam is fixedly connected with the lower end of a suspender, the upper end of the suspender is fixedly connected with a jack arranged on the anchor beam, and the anchor beam is used as a main stress rod piece of the support system and supported on the front cross beam of the hanging basket and a poured. The top of the longitudinal distribution beam is fixed with a template support system, and the top of the template support system is provided with a template.
Furthermore, the support system comprises a truss, a plurality of vertically arranged channel steel is fixed at the lower part of one side of the truss, and an inclined strut is fixed between the channel steel and the truss.
Further, round pin axle support system is provided with the slotted hole including two connecting plates of welded fastening on hanging basket secondary longeron on the connecting plate symmetric position, and the channel-section steel of support system lower part is inserted and is established between two connecting plates, is provided with the round pin shaft hole that corresponds with the slotted hole on the channel-section steel, and round pin axle hole and round pin shaft hole interpolation are equipped with the round pin axle.
Furthermore, the slide comprises two steel plates and a bearing steel plate welded between the bottoms of the steel plates, and the slide is welded and fixed on the front cross beam or the middle cross beam through a stiffening rib.
Compared with the prior art, the utility model discloses form wholly with the centre form, bear whole loads by the anchor beam, utilize jack and jib to realize the lift of whole system, support the whole steadiness of system realization support through the round pin axle. This centre form support system convenient operation utilizes the jack, alright realize the lift of centre form support system. After the support system is placed in place through the slide, the whole support system is supported by the bottom of the slide, so that the investment of construction procedures and labor is reduced, the construction period is shortened, and the labor cost is saved.
Drawings
FIG. 1 is a side elevational view of the structure of the present invention;
FIG. 2 is a front elevation view of the structure of the present invention;
fig. 3 is a plan view of the slide position of the present invention;
FIG. 4 is a side elevational view of the pin support system;
FIG. 5 is a front elevation view of the pin support system;
FIG. 6 is a side elevational view of the ramp structure;
FIG. 7 is a front elevation view of the chute structure;
FIG. 8 is a schematic diagram of a stent architecture;
in the figure, 1-slideway, 2-bracket system, 2.1-truss, 2.2-channel steel, 2.3-diagonal brace, 3-longitudinal distribution beam, 4-suspender, 5-anchor beam, 6-jack, 7-template, 8-pin shaft support system, 8.1-connecting plate, 8.2-slotted hole, 8.3-pin shaft, 9-template bracket system, 10-front beam or middle beam and 11-steel plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a bottom plate-free inner mold support system for a concrete main beam of a cable-stayed bridge comprises two slideways 1 welded on the inner side of a front cross beam or a middle cross beam 10 of a hanging basket, the slideways 1 are symmetrically arranged, a support system 2 is arranged above the two slideways 1, the bottom of the support system 2 is connected with a secondary longitudinal beam of the hanging basket through a pin shaft support system 8, the top of the support system 2 is fixedly connected with a longitudinal distribution beam 3, the longitudinal distribution beam 3 spans between the two slideways 1, two ends of the longitudinal distribution beam 3 are respectively positioned right above the two slideways 1, the upper part of the longitudinal distribution beam 3 is fixedly connected with the lower end of a suspender 4, the upper end of the suspender 4 is fixedly connected with a jack 6 arranged on an anchor beam 5, the top of the longitudinal distribution beam 3 is fixedly provided with a template support system 9.
As shown in fig. 8, the support system 2 includes a truss 2.1, a plurality of vertically arranged channel steel 2.2 are fixed at the lower part of one side of the truss 2.1, and an inclined strut 2.3 is fixed between the channel steel 2.2 and the truss 2.1.
As shown in fig. 4 and 5, the pin shaft support system 8 comprises two connecting plates 8.1 welded and fixed on the secondary hanging basket longitudinal beam, long round holes 8.2 are formed in the symmetrical positions of the connecting plates 8.1, channel steel 2.2 at the lower part of the support system 2 is inserted between the two connecting plates 8.1, pin shaft holes corresponding to the long round holes 8.2 are formed in the channel steel 2.2, and pin shafts 8.3 are inserted into the pin shaft holes and the pin shaft holes.
As shown in fig. 6 and 7, the slideway 1 comprises two steel plates 11 and a bearing steel plate welded between the bottoms of the steel plates 11, and the slideway 1 is welded and fixed on the front cross beam or the middle cross beam 10 through a stiffening rib 12.
The slideway 1 is welded on a front cross beam and a middle cross beam of the hanging basket through a stiffening plate, and the bracket system 2 is lowered in place and then supported by the slideway 1 bottom to form an integral bracket system. The longitudinal distribution beam 3 is used as a distribution beam for lifting of the support system, the longitudinal distribution beam 3 is connected with a jack 6 through a suspender 4 and an anchor beam 5, and the jack is used for lifting of the support system. The anchor beam 5 is used as a main stress rod piece of the bracket system and is supported on the front beam of the hanging basket and the poured beam section. The pin shaft supporting system 8 is used for transverse positioning and stress of the bracket system 2, and the whole stability is ensured.
The purpose of demoulding is achieved through the dead weight of the template and the bracket system.
The specific operation method comprises the following steps:
1) after the concrete pouring is finished, maintaining to reach the strength specified by the design, and tensioning the corresponding prestress and stay cable;
2) removing all pin shafts of the pin shaft supporting system, and transferring the load to the suspender;
3) lowering the inner mold support system by using a jack through a suspender and the self weight of the template support system;
4) after the internal mold support system is put in place through the slide way, the bottom of the slide way supports the whole template support system through the longitudinal distribution beam;
5) removing the side molds, and placing the side molds on the mold plate support system to ensure that all the mold plates are lower than the bottom surface of the cross beam;
6) after the whole hanging basket system moves forwards to the next section, the internal mold support system is lifted in place according to the reverse sequence, all pin shafts of the pin shaft support system are inserted, and the other side molds are installed in place;
7) binding reinforcing steel bars, tensioning the stay cables for the first time, pouring half of concrete, tensioning the stay cables for the second time, pouring the residual concrete, and maintaining the concrete to the strength specified by the design, tensioning the prestress and the stay cables;
8) and repeating the steps and constructing the rest section concrete.
The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Claims (4)
1. The utility model provides a no bottom plate centre form support system for cable-stay bridge concrete girder which characterized in that: comprises two slideways (1) welded on the inner side of a front cross beam or a middle cross beam (10) of a hanging basket, wherein the slideways (1) are symmetrically arranged, a bracket system (2) is arranged above the two slideways (1), the bottom of the bracket system (2) is connected with a secondary longitudinal beam of the hanging basket through a pin shaft supporting system (8), the top of the bracket system (2) is fixedly connected with a longitudinal distribution beam (3), the longitudinal distribution beam (3) spans between the two slideways (1), and the two ends of the longitudinal distribution beam (3) are respectively positioned right above the two slideways (1), the upper part of the longitudinal distribution beam (3) is fixedly connected with the lower end of the suspender (4), the upper end of the suspender (4) is fixedly connected with a jack (6) arranged on the anchor beam (5), and a formwork support system (9) is fixed at the top of the longitudinal distribution beam (3), and a formwork (7) is installed at the top of the formwork support system (9).
2. The bottom-plate-free inner mold bracket system for the cable-stayed bridge concrete main beam according to claim 1, which is characterized in that: the support system (2) comprises a truss (2.1), wherein the lower part of one side of the truss (2.1) is fixed with a plurality of vertically arranged channel steel (2.2), and an inclined strut (2.3) is fixed between the channel steel (2.2) and the truss (2.1).
3. The bottom-plate-free inner mold bracket system for the cable-stayed bridge concrete main beam according to claim 2, characterized in that: the pin shaft support system (8) comprises two connecting plates (8.1) which are welded and fixed on the secondary hanging basket longitudinal beam, long round holes (8.2) are formed in the symmetrical positions of the connecting plates (8.1), channel steel (2.2) at the lower part of the support system (2) is inserted between the two connecting plates (8.1), pin shaft holes corresponding to the long round holes (8.2) are formed in the channel steel (2.2), and pin shafts (8.3) are inserted into the pin shaft holes.
4. The bottom-plate-free inner mold bracket system for the cable-stayed bridge concrete main beam according to claim 3, characterized in that: the slideway (1) comprises two steel plates (11) and a bearing steel plate welded between the bottoms of the steel plates (11), and the slideway (1) is welded and fixed on the front cross beam or the middle cross beam (10) through a stiffening rib (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021252305.9U CN212801237U (en) | 2020-07-01 | 2020-07-01 | A no bottom plate centre form support system for cable-stay bridge concrete girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021252305.9U CN212801237U (en) | 2020-07-01 | 2020-07-01 | A no bottom plate centre form support system for cable-stay bridge concrete girder |
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| Publication Number | Publication Date |
|---|---|
| CN212801237U true CN212801237U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021252305.9U Active CN212801237U (en) | 2020-07-01 | 2020-07-01 | A no bottom plate centre form support system for cable-stay bridge concrete girder |
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| CN (1) | CN212801237U (en) |
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2020
- 2020-07-01 CN CN202021252305.9U patent/CN212801237U/en active Active
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