CN113265958A - Bottom die platform integral hanging and dismantling type hanging basket suspension arm and construction method - Google Patents
Bottom die platform integral hanging and dismantling type hanging basket suspension arm and construction method Download PDFInfo
- Publication number
- CN113265958A CN113265958A CN202110461144.7A CN202110461144A CN113265958A CN 113265958 A CN113265958 A CN 113265958A CN 202110461144 A CN202110461144 A CN 202110461144A CN 113265958 A CN113265958 A CN 113265958A
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- jack
- bottom die
- hanging
- die platform
- tool anchor
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000000725 suspension Substances 0.000 title claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 17
- 230000000149 penetrating effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 238000004873 anchoring Methods 0.000 description 5
- 239000010727 cylinder oil Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The utility model relates to a whole basket davit and construction method are hung to putting demolition type of die block platform, its basket davit includes hoisting system, hoisting system is including the jack of punching, the jack of punching cooperates the oil pump to form power unit, the jack of punching fixedly connected with lifting rope, lifting rope are connected with the atress locking shifter who sets up in die block platform bottom end rail in the one end of keeping away from the jack of punching, and the lifting rope can be dismantled in the one end of being close to the jack of punching and be connected with the instrument anchor that sets up in the continuous beam top, atress locking shifter includes ground tackle and clamping piece, the lifting rope adopts steel strand wires. This application is through adopting the jack-through cooperation oil pump as power equipment, and the steel strand wires is as the lifting rope, and ground tackle, clamping piece are as control and atress conversion instrument, and whole string basket die block platform is wholly hung and is put, hangs and put and demolish behind the ground, has reduced the risk of hanging the basket die block and demolising through this kind of mode for the construction progress has reduced construction cost.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a bottom die platform integral hanging and dismantling type hanging basket suspension arm and a construction method.
Background
In the construction process of the upper structure of the bridge, a plurality of continuous beam constructions adopt hanging basket cantilever constructions.
The related art can refer to Chinese invention patent with application publication number CN103911957A, which discloses a prestressed continuous box girder cantilever construction hanging basket, comprising a main girder, wherein the bottom of the main girder is connected with a traveling system through an anchoring system, the traveling system is also connected with a suspension system in a hanging manner, a bottom basket is connected below the suspension system, the suspension system is also provided with a template, and the traveling system can drive the suspension system to move on the main girder.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: in present ripe string basket structure, what the die block platform generally adopted is that the dispersion is dismantled, because the clear height of most bridges is higher, the safety risk of hanging basket die block platform is demolishd in the dispersion is great, and the takedown time is longer, and it is more to occupy machinery, and the cost is higher.
Disclosure of Invention
In order to reduce the risk of dismantling the bottom die of the hanging basket, accelerate the construction progress and reduce the construction cost, the application provides the whole hanging and dismantling type hanging basket suspension arm of the bottom die platform and a construction method.
The utility model provides a bottom die platform is whole to be hung and is put dismantlement formula and hang basket davit, adopts following technical scheme:
the utility model provides a whole formula of demolising of hanging of die block platform hangs basket davit, includes hoisting system, hoisting system includes the jack that pierces through, the jack cooperation oil pump that pierces through forms power unit, the jack fixedly connected with lifting rope that pierces through, the lifting rope is connected with the atress that sets up in die block platform bottom end rail portion in the one end of keeping away from the jack that pierces through, and the lifting rope can be dismantled in the one end of being close to the jack that pierces through and be connected with the instrument anchor that sets up in continuous beam top.
Through adopting above-mentioned technical scheme, through adopting the jack-through cooperation oil pump as power unit to utilize the cooperation of lifting rope and atress locking shifter, put whole string basket die block platform and wholly hang, hang and put and demolish behind the ground, reduced the risk that string basket die block demolishd through this kind of mode, accelerated the construction progress, reduced construction cost.
Optionally, the force-locking conversion mechanism comprises an anchor and a clip.
By adopting the technical scheme, the clamping piece is matched with the anchorage device to be used as a stress locking and converting device, and the device is mature, reliable, simple and safe to operate. .
Optionally, a base plate is arranged between the anchorage device and the bottom of the bottom die platform lower cross beam.
By adopting the technical scheme, the base plate can protect the anchor and the bottom of the bottom die platform lower beam from contacting, and abrasion is reduced.
Optionally, the lifting rope is a steel strand.
By adopting the technical scheme, the steel strand is good in flexibility when being used as a lifting rope, the quality is ensured, the steel strand is not easy to break, and the steel strand is safe and reliable.
Optionally, the tool anchor comprises a first tool anchor and a second tool anchor, the first tool anchor is located above the through-centre jack, and the second tool anchor is located below the through-centre jack.
Through adopting above-mentioned technical scheme, the lifting rope utilizes with two instrument anchors and the cooperation of punching jack, constantly changes the atress system of instrument anchor for whole continuous beam hangs basket die block platform and can stably hang and put to the bottom surface.
In a second aspect, the application provides a construction method, which is applied to the above bottom die platform to integrally lift and remove the detachable hanging basket suspension arm, and adopts the following technical scheme:
a construction method comprising:
s7, installing a center-penetrating jacking system;
s8, loosening the front and rear hanging systems of the hanging basket;
and S9, integrally hoisting the bottom die platform.
Through adopting above-mentioned technical scheme, through adopting the jack-through cooperation oil pump as power unit to utilize the cooperation of lifting rope and atress locking shifter, put whole string basket die block platform and wholly hang, hang and put and demolish behind the ground, reduced the risk that string basket die block demolishd through this kind of mode, accelerated the construction progress, reduced construction cost.
Optionally, in S9, the method includes:
s9.1, the jacking range of the through jack is raised, and the mass of the bottom die platform is born by a second tool anchor;
s9.2, retracting the jacking range of the center-penetrating jack;
s9.3, removing the stress system of the second tool anchor, converting the quality of the bottom die platform onto the first tool anchor, and reducing the bottom die platform along with the retraction of the jacking stroke of the piercing jack;
s9.4, continuously converting a stress system between the first tool anchor and the second tool anchor;
s9.5, integrally hoisting the whole continuous beam hanging basket bottom die platform to the ground.
Through adopting above-mentioned technical scheme, the lifting rope utilizes with two instrument anchors and the cooperation of punching jack, constantly changes the atress system of instrument anchor for whole continuous beam hangs basket die block platform and can stably hang and put to the bottom surface.
Optionally, before S7, the method includes:
s1, determining the position of a bottom die platform lifting point;
s2, mounting a rigid framework of the folding section;
s3, binding closed section continuous beam steel bars;
s4, pouring closure section continuous beam concrete;
s5, removing the side die;
and S6, prestressed tensioning and grouting of the closure segment.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through adopting the centre-penetrating jack to cooperate the oil pump as power equipment, the steel strand wires are as the lifting rope, and ground tackle, clamping piece are as control and atress conversion instrument, hang whole string basket die block platform and put, hang and put and demolish behind the ground, have reduced the risk that string basket die block demolishd through this kind of mode for the construction progress has been reduced, construction cost is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a flowchart of a construction method according to an embodiment of the present application.
Fig. 3 is a flowchart of the sub-step S9 according to an embodiment of the present application.
Description of reference numerals: 1. a center-penetrating jack; 21. a first tool anchor; 22. a second tool anchor; 3. a lifting rope.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a whole formula of demolising of hanging of die block platform is put. Referring to fig. 1, the bottom die platform integral hoisting detachable hanging basket suspension arm comprises a hoisting system, the hoisting system comprises a through jack 1, and the through jack 1 is matched with an oil pump to form a power mechanism.
Wherein, the power unit that punching jack 1 and oil pump cooperation formed is prior art. The specific working principle is as follows: when the prestressed tendon is tensioned, oil is fed into a tensioning cylinder oil nozzle, oil is returned from a jacking cylinder oil nozzle, and the jacking cylinder, the connecting sleeve and the supporting sleeve are connected into a whole and move rightwards to jack the anchor ring; the tensioning oil cylinder, the end cover nut, the plug and the penetrating sleeve are connected into a whole to drive the tool anchor to move left to tension the prestressed tendon; when in jacking and anchoring, under the condition of keeping the tension force stable, the jacking cylinder oil nozzle takes oil, the jacking piston, the protective sleeve and the jacking head are connected into a whole and move right, so that the clamping piece is jacked into the anchor ring strongly; at the moment, oil is returned from the oil nozzle of the stretching cylinder, oil is fed from the oil nozzle of the jacking cylinder, and the hydraulic return stroke of the stretching cylinder is realized. And finally, oil return is simultaneously carried out on the oil nozzles of the stretch-draw cylinder and the jacking cylinder, and the jacking piston returns to reset under the action of a spring force.
The piercing jack 1 is fixedly connected with a lifting rope 3, the lifting rope 3 is made of steel stranded wires, and the steel stranded wires are used as the lifting rope 3, so that the piercing jack is good in flexibility, guaranteed in quality, not easy to break, safe and reliable.
The steel strand is connected with a stress locking and converting mechanism arranged at the bottom of a lower cross beam of a bottom die platform at one end far away from a center-penetrating jack 1, the stress locking and converting mechanism comprises an anchorage device and a clamping piece, the stress locking and converting mechanism formed by the cooperation of the anchorage device and the clamping piece is the prior art, specifically, an anchor and a clamp are tools for clamping prestressed steel bars by anchoring, usually, the anchor is anchored at the end part of a component, is connected with the component into a whole to bear force together, and is not taken down, so that the anchor is called as an anchorage device, and the anchor device is mainly used in the component produced by a post-tensioning method; the prestressed reinforcement is clamped or temporarily fixed during the process of forming the tensioned reinforcement and the concrete, and is removed and reused after the concrete reaches a certain strength, which is generally called a clamp. Sometimes, the two can be used interchangeably, and the anchorage device and the clamp are one of the key factors for ensuring the safety and the reliability of the prestressed concrete structure. The clamping piece is matched with the anchorage device to be used as a stress locking and converting mechanism, and the device is mature, reliable, simple and safe to operate.
A base plate is arranged between the anchorage device and the bottom of the bottom die platform lower beam. The backing plate can play the guard action to the contact of ground tackle and the bottom of die block platform bottom end rail, reduces wearing and tearing.
One end of the steel strand close to the through jack 1 is connected with a tool anchor arranged at the top end of the continuous beam through a bolt. The tool anchor comprises a first tool anchor 21 and a second tool anchor 22, the first tool anchor 21 being located above the through-going jack 1 and the second tool anchor 22 being located below the through-going jack 1. The lifting rope 3 is matched with the two tool anchors and the penetrating jack 1, and a stress system of the tool anchors is continuously converted, so that the whole continuous beam hanging basket bottom die platform can be stably hung to the bottom surface.
The implementation principle of the whole detachable hanging basket suspension arm hung on the bottom die platform in the embodiment of the application is as follows: arranging a preformed hole at the position of a lifting point in the process of installing a closure section template, installing a penetrating jacking system after concrete pouring, prestress tensioning and mud jacking of a continuous beam are finished, enabling a steel strand to penetrate through the preformed hole at the position of the lifting point and be fixed with an anchorage device arranged at the bottom of a lower beam of a bottom die platform, arranging a base plate between the lower beam and the anchorage device, fixing the other end of the steel strand with two tool anchors (comprising a first tool anchor 21 and a second tool anchor 22) arranged at the top end of the continuous beam and the penetrating jack 1, wherein the second tool anchor 22 is arranged below the penetrating jack 1, the first tool anchor 21 is arranged above the penetrating jack 1, when the jacking process of the penetrating jack 1 is lifted, the mass of the bottom die platform is born by the second tool anchor 22, when the bottom die platform is not lifted by the lifting of the penetrating jack 1, when the lifting process of the penetrating jack 1 is retracted, firstly dismantling the stress system of the second tool anchor 22, the quality of the bottom die platform is converted to the first tool anchor 21, the bottom die platform is reduced along with the retraction of the jacking stroke of the piercing jack 1, the stress system between the first tool anchor 21 and the second tool anchor 22 is continuously converted by utilizing the self-anchoring characteristic when the clamping piece is pulled, and finally the whole continuous beam cradle bottom die platform is integrally hung on the ground.
Based on the above-mentioned die block platform is wholly hung and is put dismantlement formula and hang basket davit, this application embodiment still discloses a construction method. Referring to fig. 2, the construction method includes the steps of:
s1, determining the position of a bottom die platform lifting point;
s2, mounting a rigid framework of the folding section;
s3, binding closed section continuous beam steel bars;
s4, pouring closure section continuous beam concrete;
s5, removing the side die;
s6, prestress tensioning and grouting of a closure segment;
s7, installing a center-penetrating jacking system;
s8, loosening the front and rear hanging systems of the hanging basket;
and S9, integrally hoisting the bottom die platform.
The method comprises the steps of arranging a preformed hole at a hanging point in the process of installing a closure section template, installing a penetrating jacking system after concrete pouring, prestress tensioning and mud jacking of a continuous beam are completed, enabling a steel strand to penetrate through the preformed hole at the hanging point and be fixed with an anchorage device arranged at the bottom of a lower cross beam of a bottom die platform, arranging a base plate between the lower cross beam and the anchorage device, enabling the other end of the steel strand to be fixed with two tool anchors (including a first tool anchor 21 and a second tool anchor 22) arranged at the top end of the continuous beam and the penetrating jack 1, integrally hoisting the whole cradle bottom die platform by adopting the penetrating jack 1 and an oil pump as power mechanisms and utilizing the matching of a lifting rope 3 and a stress locking conversion mechanism, and dismantling the whole cradle bottom die platform after hoisting to the ground.
Referring to fig. 3, specifically in S9, the following sub-steps are further included:
s9.1, the jacking stroke of the through jack 1 is raised, and the mass of the bottom die platform is born by a second tool anchor 22;
s9.2, retracting the jacking stroke of the center-penetrating jack 1;
s9.3, removing a stress system of the second tool anchor 22, transferring the quality of the bottom die platform onto the first tool anchor 21, and reducing the bottom die platform along with the retraction of the jacking stroke of the through jack 1;
s9.4, continuously converting a stress system between the first tool anchor 21 and the second tool anchor 22;
s9.5, integrally hoisting the whole continuous beam hanging basket bottom die platform to the ground.
The second tool anchor 22 is located below the through jack 1, the first tool anchor 21 is located above the through jack 1, when the jacking stroke of the through jack 1 rises, the bottom die platform mass is borne by the second tool anchor 22, the bottom die platform is not lifted due to the jacking stroke of the through jack 1, when the jacking stroke of the through jack 1 retracts, a stress system of the second tool anchor 22 is firstly removed, the bottom die platform mass is converted onto the first tool anchor 21, the bottom die platform is lowered along with the retraction stroke of the through jack 1, the stress system between the first tool anchor 21 and the second tool anchor 22 is continuously converted by utilizing the self-anchoring characteristic when a clamping piece is pulled, and finally the whole continuous beam hanging basket bottom die platform is integrally hung on the ground.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a whole formula of demolising of hanging of die block platform hangs basket davit which characterized in that: including the hoisting system, the hoisting system includes punch jack (1), punch jack (1) cooperation oil pump forms power unit, punch jack (1) fixedly connected with lifting rope (3), lifting rope (3) are connected with the atress that sets up in die block platform bottom end rail in the one end of keeping away from punch jack (1) and are locked the shifter, and lifting rope (3) can be dismantled in the one end of being close to punch jack (1) and be connected with the instrument anchor that sets up in continuous beam top.
2. The whole hanging and dismantling basket suspension arm for the bottom die platform as claimed in claim 1, which is characterized in that: the stress locking conversion mechanism comprises an anchorage device and a clamping piece.
3. The whole bottom die platform hanging and dismantling type hanging basket suspension arm as claimed in claim 2, which is characterized in that: and a base plate is arranged between the anchorage device and the bottom of the bottom die platform lower cross beam.
4. The whole hanging and dismantling basket suspension arm for the bottom die platform as claimed in claim 1, which is characterized in that: the lifting rope (3) is made of steel strands.
5. The whole hanging and dismantling basket suspension arm for the bottom die platform as claimed in claim 1, which is characterized in that: the tool anchor comprises a first tool anchor (21) and a second tool anchor (22), the first tool anchor (21) is located above the through-centre jack (1), and the second tool anchor (22) is located below the through-centre jack (1).
6. A construction method applied to the bottom die platform integral hanging and dismantling type hanging basket suspension arm according to any one of claims 1 to 5, is characterized by comprising the following steps:
s7, installing a center-penetrating jacking system;
s8, loosening the front and rear hanging systems of the hanging basket;
and S9, integrally hoisting the bottom die platform.
7. A construction method according to claim 6, wherein S9 includes:
s9.1, the jacking stroke of the through jack (1) is raised, and the mass of the bottom die platform is born by a second tool anchor (22);
s9.2, retracting the jacking stroke of the through jack (1);
s9.3, removing a stress system of the second tool anchor (22), converting the quality of the bottom die platform onto the first tool anchor (21), and reducing the bottom die platform along with the retraction of the jacking stroke of the through jack (1);
s9.4, continuously converting a stress system between the first tool anchor (21) and the second tool anchor (22);
s9.5, integrally hoisting the whole continuous beam hanging basket bottom die platform to the ground.
8. The construction method according to claim 6, comprising, before S7:
s1, determining the position of a bottom die platform lifting point;
s2, mounting a rigid framework of the folding section;
s3, binding closed section continuous beam steel bars;
s4, pouring closure section continuous beam concrete;
s5, removing the side die;
and S6, prestressed tensioning and grouting of the closure segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461144.7A CN113265958A (en) | 2021-04-27 | 2021-04-27 | Bottom die platform integral hanging and dismantling type hanging basket suspension arm and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110461144.7A CN113265958A (en) | 2021-04-27 | 2021-04-27 | Bottom die platform integral hanging and dismantling type hanging basket suspension arm and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113265958A true CN113265958A (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110461144.7A Pending CN113265958A (en) | 2021-04-27 | 2021-04-27 | Bottom die platform integral hanging and dismantling type hanging basket suspension arm and construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN113265958A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29509817U1 (en) * | 1995-06-16 | 1995-08-24 | Frey Michael | Work basket for use on construction sites |
| CN203452013U (en) * | 2013-08-29 | 2014-02-26 | 中交第四公路工程局有限公司 | Integrated unloading device for cantilever casting cradle template |
| CN110158469A (en) * | 2018-04-03 | 2019-08-23 | 中铁十五局集团有限公司 | A kind of bridge hanging basket construction template integrally hangs method down |
| CN209873584U (en) * | 2019-03-25 | 2019-12-31 | 中铁十六局集团第二工程有限公司 | Hang basket template and demolish device |
| CN111576248A (en) * | 2020-05-29 | 2020-08-25 | 中铁七局集团有限公司 | Dismantling method for cantilever cast-in-situ beam hanging basket system |
| CN112523112A (en) * | 2020-11-19 | 2021-03-19 | 中国建筑第八工程局有限公司 | Method for dismantling overhead suspension casting hanging basket |
| CN112554076A (en) * | 2020-12-22 | 2021-03-26 | 中交二公局第三工程有限公司 | Continuous small-stroke hanging basket bottom basket lowering device and construction method |
-
2021
- 2021-04-27 CN CN202110461144.7A patent/CN113265958A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29509817U1 (en) * | 1995-06-16 | 1995-08-24 | Frey Michael | Work basket for use on construction sites |
| CN203452013U (en) * | 2013-08-29 | 2014-02-26 | 中交第四公路工程局有限公司 | Integrated unloading device for cantilever casting cradle template |
| CN110158469A (en) * | 2018-04-03 | 2019-08-23 | 中铁十五局集团有限公司 | A kind of bridge hanging basket construction template integrally hangs method down |
| CN209873584U (en) * | 2019-03-25 | 2019-12-31 | 中铁十六局集团第二工程有限公司 | Hang basket template and demolish device |
| CN111576248A (en) * | 2020-05-29 | 2020-08-25 | 中铁七局集团有限公司 | Dismantling method for cantilever cast-in-situ beam hanging basket system |
| CN112523112A (en) * | 2020-11-19 | 2021-03-19 | 中国建筑第八工程局有限公司 | Method for dismantling overhead suspension casting hanging basket |
| CN112554076A (en) * | 2020-12-22 | 2021-03-26 | 中交二公局第三工程有限公司 | Continuous small-stroke hanging basket bottom basket lowering device and construction method |
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Application publication date: 20210817 |
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