CN108611981B - Simply-dismantled door opening support and dismantling method thereof - Google Patents
Simply-dismantled door opening support and dismantling method thereof Download PDFInfo
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- CN108611981B CN108611981B CN201810495552.2A CN201810495552A CN108611981B CN 108611981 B CN108611981 B CN 108611981B CN 201810495552 A CN201810495552 A CN 201810495552A CN 108611981 B CN108611981 B CN 108611981B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention provides a simple-dismantling door opening support machine dismantling method, which relates to the technical field of bridge engineering construction and solves the technical problems of limited dismantling space and underground efficiency in the dismantling process, wherein a door opening support comprises a door opening support ceiling arranged below a cast-in-place box beam, the door opening support ceiling is supported by a steel pipe pile upright column arranged at the bottom of the door opening support ceiling, a hanging rod penetrating through the door opening support ceiling is arranged on the cast-in-place box beam, the hanging rod is arranged on the cast-in-place box beam in a sliding manner along the vertical direction, and fixing devices for fixing the hanging rod are arranged at the bottoms of the cast-in-place box beam and the door opening support ceiling; the dismantling process comprises the following steps: s2: dismantling the steel pipe pile upright column at the bottom of the door opening support ceiling, so that the door opening support ceiling is suspended through the upper suspender; s3: rotating the suspender to enable the ceiling of the door opening support to slide downwards; when the door opening support is dismantled, the door opening support is lowered to the ground for dismantling, and the efficiency in the dismantling process is effectively improved.
Description
Technical Field
The invention relates to the technical field of road engineering construction, in particular to a simply-dismantled door opening support and a dismantling method thereof.
Background
When the urban road supports a support with a higher supporting height or a support with a larger bearing capacity, the door opening support with a larger supporting distance is arranged according to the traffic requirement.
If the chinese patent with the publication number "CN 103469733B" discloses a self-falling type box girder steel tube bailey door opening bracket and a supporting method thereof, wherein the self-falling type box girder steel tube bailey door opening bracket comprises a reinforced concrete foundation, steel buttresses are arranged on the reinforced concrete foundation, the steel buttresses are connected with the reinforced concrete foundation through sand boxes, a bailey truss assembly is erected on a plurality of steel buttresses, and the steel buttresses and the bailey truss assembly are combined to form a bailey door opening.
According to the self-falling box girder steel tube bailey door opening support disclosed by the technical scheme, the support is applied through the tool and modularization of the support structure and the self-falling characteristic of the sand box, so that the mounting and dismounting time of the cast-in-place box girder support can be completed within about 7 days, and the construction progress is accelerated; however, in the dismantling process, sand is firstly placed in the sand boxes step by step to enable the support to fall integrally, and the bottom die and the cast-in-place box beam automatically fall off.
Disclosure of Invention
One of the objects of the present invention is to provide a door opening bracket which is simple to remove and which has a quick removal feature.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a door opening support that simply demolishs, is including setting up the door opening support ceiling in cast-in-place case roof beam below, door opening support ceiling supports through the steel-pipe pile stand that sets up in its bottom, be equipped with a plurality of being run through on the cast-in-place case roof beam the jib of door opening support ceiling, the jib slides along vertical direction and sets up on the cast-in-place case roof beam, cast-in-place case roof beam and door opening support ceiling bottom are equipped with fixedly the fixing device of jib.
Through adopting above-mentioned technical scheme, the jib through running through the setting slides the setting along vertical direction, make when demolising, demolish earlier through steel-pipe pile stand with the bottom, descend door opening support ceiling whole subaerial again, demolish door opening support ceiling subaerial, avoided because high altitude construction causes the condition that the efficiency of construction is low to appear, and fix the position of avoiding demolising the in-process through fixing device to the jib, because the effect of bottom door opening support ceiling gravity leads to the jib to slide downwards, the phenomenon that causes the incident takes place.
Preferably, one side, deviating from the cast-in-place box beam, of the door opening support ceiling is provided with a support frame which is mutually attached to the door opening support ceiling, and the support frame is formed by splicing criss-cross support rods.
Through adopting above-mentioned technical scheme, suspend the in-process in midair, support door opening support ceiling through the support frame, the bracing piece that sets up through vertically and horizontally staggered has increased area of contact, has avoided at door opening support ceiling in the in-process that slides downwards, because the too big scene that causes the collapse of surface area produces.
Preferably, the outer side of the suspender is provided with an external thread, the suspender is rotatably arranged along the axis of the suspender, the fixing device comprises an anchoring nut which is in threaded connection with the outer side of the suspender, and the anchoring nut is fixedly arranged above the cast-in-situ box girder.
Through adopting above-mentioned technical scheme, fix the upper end of jib through fixed anchor nut that sets up on cast-in-place box girder, and through the fixed setting of anchor nut, rotate the jib and make the jib carry out the ascending slip of vertical side for anchor nut to make can drop the minimum with the door opening support ceiling of bottom through rotating the jib, thereby made things convenient for demolising of door opening support ceiling.
Preferably, the fixing device further protects a fixing sleeve ring which is attached to the bottom of the ceiling of the door opening support, and the fixing sleeve ring and the hanging rod rotate synchronously.
Through adopting above-mentioned technical scheme, through the setting with the synchronous pivoted fixed lantern ring of jib, at the rotation jib in-process, the fixed lantern ring rotates with the jib is synchronous to guaranteed to rotate the in-process, the relative position between door opening support ceiling and the jib is inconvenient all the time, thereby makes door opening support ceiling can descend conveniently more.
Preferably, the fixed sleeve ring is provided with a fixed shaft which penetrates through the fixed sleeve ring and the hanging rod at the same time, two ends of the fixed shaft are provided with limiting rods which are rotatably arranged, and the limiting rods are hinged to the fixed shaft.
By adopting the technical scheme, the arrangement of the fixing shaft penetrating through the fixing sleeve ring and the suspender ensures that the fixing sleeve ring keeps synchronous rotation with the suspender in the rotation process of the suspender and also ensures the relative position between the suspender and the fixing sleeve ring; and through the setting of the limiting rod which is rotatably arranged, the relative fixation of the fixed shaft between the fixed sleeve ring and the suspender is effectively ensured in the using process.
Preferably, the two ends of the suspender are respectively provided with an extension rod and a groove which are matched with each other, and the extension rod is provided with a limiting device for fixing the suspender.
Through adopting above-mentioned technical scheme, through the setting of the extension rod and the recess that mutually support and set up, in the use, measure the distance between cast-in-place box roof beam and the ground earlier, splice the jib through extension rod and recess to the jib is being fixed to the jib that the concatenation was accomplished through stop device's setting, thereby makes the whole length of jib increase, has guaranteed that the length of jib can be applicable to the cast-in-place box roof beam of co-altitude not.
Preferably, the limiting device comprises a countersunk screw which is arranged on the suspension rod and penetrates through the side wall of the groove and the extension rod.
By adopting the technical scheme, the extension rod and the groove are mutually fixed through the arrangement of the countersunk head screw, so that safety accidents caused by falling of the suspension rod in the dismounting process are avoided; and the arrangement of the countersunk head screw can not influence the rotation process of the suspender, thereby ensuring the smooth operation of the rotation process of the suspender.
Another object of the present invention is to provide a method for removing a door opening bracket, which is mainly used for removing the door opening bracket proposed in the above scheme, and has a feature of effectively improving the removal efficiency, and the method includes the following steps:
s1: fixing an anchoring nut on the cast-in-situ box girder, and rotating the suspender to enable the suspender to penetrate through the anchoring nut;
s2: when the suspender extends out of the ceiling of the door opening bracket downwards, the fixed shaft is inserted, the length of the fixed shaft is adjusted, so that the width of two sides of the fixed shaft is kept consistent with that of the suspender, and the limiting rod is rotated, so that the fixed shaft is always inserted in the fixed sleeve through the limiting rod;
s2: dismantling the steel pipe pile upright column at the bottom of the door opening support ceiling, so that the door opening support ceiling is suspended through the upper suspender;
s3: rotating the suspender to enable the ceiling of the door opening support to slide downwards;
s4: the whole door opening support ceiling is lowered to the ground, and the door opening support ceiling is dismantled by mechanical equipment and manpower;
s5: and (4) dismantling the suspender, filling the upper hole of the cast-in-place box girder through concrete, and completing the dismantling of the door opening support ceiling.
Through adopting above-mentioned technical scheme, through sliding door opening support ceiling downwards, make when demolising the door opening support, suspend door opening support ceiling in midair earlier through, and make door opening support ceiling below lose the support through demolising the steel-pipe column stand, slide door opening support ceiling downwards through rotating the jib, make the door opening support slide to ground, thereby make and demolish fast on ground, mechanical equipment's efficiency has been improved, the time that occupies the road surface has been reduced, and dismantle the in-process, do not need constructor to stand and demolish door opening support ceiling in the highland.
Preferably, before S1, the distance between the cast-in-place box girder and the ground is measured, and the hanger rods are spliced according to the measured distance, so that the total length of the hanger rods is not less than the distance between the cast-in-place box girder and the ground.
Through adopting above-mentioned technical scheme, need make its length not less than cast-in-place box beam and the distance between the ground with door opening support ceiling gliding to ground when dismantling to guaranteed to can descend to ground carrying out the decline in-process of door opening support ceiling.
Preferably, in S3, the boom is kept rotating synchronously.
Through adopting above-mentioned technical scheme, the dismantlement in-process because door opening support ceiling comprises through a plurality of I-steel, rotates the jib one by one and can lead to the I-steel to buckle, is unfavorable for recycle, through synchronous revolution's jib for door opening support ceiling descends the in-process and keeps the level, has avoided leading to because pressure effect that door opening support ceiling slope leads to blocking each other between its and the jib, the phenomenon of difficult decline.
In conclusion, the invention has the following beneficial effects:
1. the through hanger rods are arranged in a sliding mode along the vertical direction, so that when the door opening support ceiling is detached, the steel pipe pile stand columns at the bottom are detached, then the whole door opening support ceiling is lowered to the ground, and the door opening support ceiling is detached on the ground, so that the detaching process is more convenient;
2. through the suspender of synchronous rotation, the door opening support ceiling keeps horizontal in the descending process, and the phenomenon that the door opening support ceiling is clamped with the suspender due to the inclination of the door opening support ceiling caused by the pressure action and is not easy to descend is avoided.
Drawings
Figure 1 is a general schematic view of a simply removed door opening bracket;
FIG. 2 is a schematic cross-sectional view of a door opening bracket, simply removed;
figure 3 is an exploded view of a hanger bar on a door opening support with simple removal.
In the figure, 1, a door opening bracket ceiling; 11. a steel pipe pile upright post; 12. a fixed collar; 121. a fixed shaft; 122. a limiting rod; 2. casting a box girder in situ; 22. an anchor nut; 3. a boom; 31. an extension rod; 32. a groove; 321. countersunk head screws; 4. a support frame; 41. a support rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the utility model provides a door opening support of simply demolising, as shown in figure 1, including setting up door opening support ceiling 1 and the steel-pipe pile stand 11 of setting in door opening support ceiling 1 bottom in cast-in-place case roof beam 2 below, as shown in figure 1, be equipped with a plurality of jibs 3 that run through door opening support ceiling 1 on cast-in-place case roof beam 2, in this embodiment, 3 quantity of jibs on the same door opening support ceiling 1 are four, and be located door opening support ceiling 1's peripheral angle department respectively, jib 3 and 1 vertical position relatively fixed settings of door opening support ceiling, jib 3 slides along vertical direction and sets up on cast-in-place case roof beam 2, it sets up on door opening support ceiling 1 and cast-in-place case roof beam 2 to rotate along self axis on jib 3. Like this, demolish the in-process, fix door opening support ceiling 1 ascending position in vertical side through jib 3, and demolish steel-pipe pile stand 11 with the bottom after door opening support ceiling 1 is fixed to be accomplished, make jib 3 that slides down on cast-in-place box girder 2, descend door opening support ceiling 1 and make it descend to ground, make the staff can demolish door opening support ceiling 1 on ground, need not scramble and demolish door opening support ceiling 1, the efficiency of demolising has been improved effectively.
In dismantling the in-process, because jib 3 quantity is limited, can not carry out complete cover to door opening support ceiling 1, door opening support ceiling 1 is because its surface area is too big and internals is more, its load is limited, suspend the in-process and cause the collapse easily in midair, as shown in fig. 2, in this embodiment, be equipped with support frame 4 below door opening support ceiling 1, support frame 4 comprises the bracing piece 41 concatenation of vertically and horizontally staggered setting, door opening support ceiling 1 bottom and the mutual setting of laminating in bracing piece 41 top, jib 3 passes support frame 4 and rather than fixed. Like this, support door opening support ceiling 1 through support frame 4, increased door opening support ceiling 1's load, avoided door opening support ceiling 1 load to lead to the fact the phenomenon of collapsing to produce effectively.
The suspension rod 3 needs to be arranged on the cast-in-place box girder 2 in a sliding manner along the vertical direction, as shown in fig. 1, in this embodiment, an anchor nut 22 is arranged above the cast-in-place box girder 2, the suspension rod 3 is screwed into the anchor nut 22, and here, the anchor nut 22 is fixed above the cast-in-place box girder 2. Like this, the suspender 3 is rotated for the suspender 3 slides on the vertical direction, thereby making the bottom door opening support ceiling 1 displace in synchronization therewith, thereby making the position of the door opening support ceiling 1 on the vertical direction adjusted by rotating the suspender 3.
In the sliding process, not only the position between the suspension rod 3 and the cast-in-place box girder 2 needs to be limited, but also the position between the suspension rod 3 and the ceiling 1 of the portal support needs to be limited, as shown in fig. 2, a fixing sleeve ring 12 in threaded connection with the suspension rod 3 is arranged below the support frame 4, here, the fixing sleeve ring 12 and the support frame 4 are mutually attached, and a positioning device for keeping the fixing sleeve ring 12 and the suspension rod 3 to synchronously rotate is arranged on the fixing sleeve ring 12. When demolising, the bottom tip of fixing lantern ring 12 and jib 3 is fixed through fixed axle 121, thereby make jib 3 rotate the in-process and can drive the synchronous rotation of the fixed lantern ring 12, make the fixed lantern ring 12 and jib 3 keep synchronous displacement, and because the laminating of the fixed lantern ring 12 is in the below of support frame 4, when the fixed lantern ring 12 slides downwards, door opening support ceiling 1 and support frame 4 can slide downwards under the action of gravity, thereby can conveniently slide door opening support ceiling 1 downwards to the minimum.
In the descending process of the door opening support ceiling 1, it is necessary to ensure that the length of the suspension rod 3 is enough to support the door opening support ceiling 1 to descend to the ground, as shown in fig. 3, the two ends of the suspension rod 3 are respectively provided with an extension rod 31 and a groove 32 which are matched with each other, the extension rod 31 is further provided with a limiting device which fixes the extension rod 31 in the groove 32, and here, the limiting device comprises a countersunk screw 321 which is arranged on the suspension rod 3 and penetrates through the side wall of the groove 32 and the extension rod 31. Through the setting of extension rod 31 and recess 32, in carrying out the installation, prepare jib 3 through measuring the distance between cast-in-place box girder 2 and the ground earlier, guarantee that jib 3 overall length is no less than the distance between cast-in-place box girder 2 and the ground.
Example 2:
a demolition method applied to example 1, as shown in fig. 2, includes the steps of,
s0: measuring the distance between the cast-in-place box beam 2 and the ground, and preparing the number of the suspension rods 3 according to the measurement result, so that the total length of the suspension rods 3 is not less than the distance between the cast-in-place box beam 2 and the ground;
the whole length of the suspender 3 is increased by splicing the suspender 3, so that when the door opening support ceiling 1 slides downwards, the length of the suspender 3 can be ensured to support the door opening support to descend to the lowest point.
S1: fixing an anchoring nut 22 above the cast-in-situ box girder 2, and rotating the suspender 3 to enable the suspender to penetrate through the anchoring nut 22;
thus, four suspenders 3 are arranged on the same door opening support ceiling 1 and are respectively positioned at four peripheral corners of the same, and the positions of the suspenders 3 in the horizontal direction are fixed through anchoring nuts 22, so that the influence of sliding on the horizontal plane on the descending of the door opening support ceiling 1 is avoided.
S2: when the hanger rod 3 extends out of the door opening support ceiling 1 downwards, the fixed lantern ring 12 is sleeved on one side of the hanger rod 3 extending out of the door opening support ceiling 1 in a rotating mode, the fixed lantern ring 12 is fixed by inserting the fixed shaft 121, and the limiting rod 122 is rotated to enable the fixed shaft 121 to be located in the fixed lantern ring 12 all the time;
here, the fixed lantern ring 12 is attached to the bottom of the support frame 4 below the door opening support ceiling 1, and the fixed lantern ring 12 and the hanger rod 3 rotate synchronously, so that in the descending process, the door opening support ceiling 1 and the support rod 41 are always located above the fixed lantern ring 12 and attached to the fixed lantern ring under the action of gravity, and the smooth downward sliding process of the door opening support ceiling 1 is ensured.
S3: and (3) removing the steel pipe pile upright post 11 at the bottom of the door opening support ceiling 1, and suspending the door opening support ceiling 1 through the upper suspender 3.
S4: the suspender 3 is rotated to enable the door opening support ceiling 1 to slide downwards;
here, need guarantee that four jib 3 on same door opening support ceiling 1 rotate in step, keep door opening support ceiling 1 to place horizontally all the time, avoid because the corner is rotatory asynchronous all around, lead to door opening support ceiling 1 crooked, the phenomenon that influences the decline process appears.
S5: the door opening support ceiling 1 is integrally descended to the ground, and the door opening support ceiling 1 is dismantled by mechanical equipment and manpower.
S6: and (4) dismantling the suspender 3, filling the hole on the cast-in-place box girder 2 through concrete, and completing the dismantling of the door opening support.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a door opening support of simply demolising, is including setting up door opening support ceiling (1) in cast-in-place case roof beam (2) below, door opening support ceiling (1) bottom is equipped with steel-pipe pile stand (11), its characterized in that: the cast-in-place box beam is characterized in that a plurality of suspenders (3) penetrating through the door opening support ceiling (1) are arranged on the cast-in-place box beam (2), the suspenders (3) are mutually fixed in the vertical direction of the door opening support ceiling (1), the suspenders (3) slide along the vertical direction and are arranged on the cast-in-place box beam (2), the suspenders (3) rotate along the axis of the suspenders and are arranged on the door opening support ceiling (1) and the cast-in-place box beam (2), and fixing devices for limiting the positions of the suspenders (3) are arranged on the suspenders.
2. A simply dismantled door opening support according to claim 1, characterised in that: door opening support ceiling (1) deviates from cast-in-place case roof beam (2) one side be equipped with support frame (4) that door opening support ceiling (1) laminated the setting each other, support frame (4) are constituteed by vertically and horizontally staggered's bracing piece (41) concatenation, jib (3) pass support frame (4) and rather than fixed the setting.
3. A simply dismantled door opening support according to claim 1, characterised in that: the fixing device comprises an anchoring nut (22) which is in threaded connection with the outer side of the suspender (3), and the anchoring nut (22) is fixedly arranged above the cast-in-situ box girder (2).
4. A simply dismantled door opening support according to claim 3, characterised in that: the fixing device also protects a fixing sleeve ring (12) which is attached to the bottom of the door opening support ceiling (1) mutually, the fixing sleeve ring (12) is in threaded connection with the outer side of the hanging rod (3), and a positioning device which keeps the fixing sleeve ring and the hanging rod (3) to rotate synchronously is arranged on the fixing sleeve ring (12).
5. A simply dismantled door opening support according to claim 4, characterised in that: the positioning device comprises a fixing shaft (121) which is arranged on the fixing sleeve ring (12) and penetrates through the fixing sleeve ring (12) and the hanging rod (3) at the same time, limiting rods (122) which are rotatably arranged are arranged at two ends of the fixing shaft (121), and the limiting rods (122) are hinged on the fixing shaft (121).
6. A simply dismantled door opening support according to claim 5, characterised in that: the suspension rod (3) is provided with an extension rod (31) and a groove (32) which are matched with each other at two ends respectively, and the suspension rod (3) is further provided with a limiting device which is used for fixing the relative position between the extension rod (31) and the groove (32).
7. A simply dismantled door opening support according to claim 6, characterised in that: the limiting device comprises a countersunk screw (321) which is arranged on the suspension rod (3) and penetrates through the side wall of the groove (32) and the extension rod (31).
8. A method of dismantling a door opening bracket for simple dismantling as claimed in any one of claims 5 to 7, wherein: the steps are as follows:
s1: fixing an anchoring nut (22) on the cast-in-situ box girder (2), and rotating the suspender (3) to enable the suspender to penetrate through the anchoring nut (22);
s2: when the hanger rod (3) extends out of the ceiling (1) of the door opening bracket downwards, the fixed lantern ring (12) is sleeved on one side of the hanger rod (3) extending out, the fixed shaft (121) is inserted into the fixed lantern ring (12) to fix the fixed lantern ring (12), and the limiting rod (122) is rotated to enable the fixed shaft (121) to be always inserted into the fixed lantern ring (12) through the limiting rod (122);
s3: dismantling a steel pipe pile upright post (11) at the bottom of the door opening support ceiling (1) to enable the door opening support ceiling (1) to be suspended through an upper suspension rod (3);
s4: the suspender (3) is rotated to enable the door opening support ceiling (1) to slide downwards;
s5: the whole door opening support ceiling (1) is lowered to the ground, and the door opening support ceiling (1) is dismantled by mechanical equipment and manpower;
s6: and (3) dismantling the hanger rod, filling the upper hole of the cast-in-place box girder (2) with concrete, and completing the dismantling of the door opening support ceiling (1).
9. A method of removing a door opening support, which is simply removed, according to claim 8, wherein: before S1, the distance between the cast-in-place box beam (2) and the door opening support ceiling (1) is measured, and the suspension rod (3) is prepared according to the measured distance, so that the total length of the suspension rod (3) is not less than the distance between the cast-in-place box beam (2) and the door opening support ceiling (1).
10. A method of removing a door opening support, which is simply removed, according to claim 8, wherein: in S3, the boom (3) is kept rotating synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495552.2A CN108611981B (en) | 2018-05-22 | 2018-05-22 | Simply-dismantled door opening support and dismantling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495552.2A CN108611981B (en) | 2018-05-22 | 2018-05-22 | Simply-dismantled door opening support and dismantling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108611981A CN108611981A (en) | 2018-10-02 |
| CN108611981B true CN108611981B (en) | 2020-04-24 |
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| CN201810495552.2A Active CN108611981B (en) | 2018-05-22 | 2018-05-22 | Simply-dismantled door opening support and dismantling method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111364365A (en) * | 2020-03-23 | 2020-07-03 | 中国十九冶集团有限公司 | Method for dismantling combined support of spiral steel pipe pile |
| CN114134812A (en) * | 2021-10-26 | 2022-03-04 | 山东高速工程建设集团有限公司 | Construction method of in-water support dismantling system for cast-in-place bridge steel pipe pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101818479B (en) * | 2009-10-10 | 2012-08-29 | 中交二公局第二工程有限公司 | Construction process for overhead back-up movement and dismantlement of movable shuttering form |
| CN103469733B (en) * | 2013-09-23 | 2015-09-16 | 中建五局土木工程有限公司 | A kind of from falling molding box joist steel Guan Beilei door opening support and bearing method thereof |
| CN107988913A (en) * | 2017-12-12 | 2018-05-04 | 中交公局第二工程有限公司 | A kind of bridge bilayer box beam upper former method for dismounting |
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