CN105625193A - Whole-span cast-in-place beam inverted-triangle formwork supporting frame and construction method thereof - Google Patents

Whole-span cast-in-place beam inverted-triangle formwork supporting frame and construction method thereof Download PDF

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Publication number
CN105625193A
CN105625193A CN201610147860.7A CN201610147860A CN105625193A CN 105625193 A CN105625193 A CN 105625193A CN 201610147860 A CN201610147860 A CN 201610147860A CN 105625193 A CN105625193 A CN 105625193A
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CN
China
Prior art keywords
inverted
steel
sides
cast
steel pipe
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Pending
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CN201610147860.7A
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Chinese (zh)
Inventor
周伟明
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China Railway 24th Bureau Group Co Ltd
Anhui Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
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China Railway 24th Bureau Group Co Ltd
Anhui Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
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Application filed by China Railway 24th Bureau Group Co Ltd, Anhui Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd filed Critical China Railway 24th Bureau Group Co Ltd
Priority to CN201610147860.7A priority Critical patent/CN105625193A/en
Publication of CN105625193A publication Critical patent/CN105625193A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a whole-span cast-in-place beam inverted-triangle formwork supporting frame and a construction method thereof.The supporting frame is characterized in that bearing platform pre-embedded steel plates are arranged on concrete bearing platforms at the two sides of a whole-span cast-in-place beam, steel pipe supporting columns are supported and erected on the bearing platform pre-embedded steel plates, pier body pre-embedded steel plates are arranged at the different heights of pier bodies at the two sides, and the steel pipe supporting columns corresponding to the pier bodies at the two sides are connected into a whole through steel channels; discharge rack sand boxes are arranged at the tops of the steel pipe supporting columns, and transverse bearing beams are arranged on the discharge rack sand boxes.The two ends of an inverted-triangle steel truss piece integrally welded and formed are supported on the transverse bearing beams at the two sides.Transverse distribution beams are arranged at the top of the inverted-triangle steel truss piece at intervals.Bamboo glue formworks are laid on the transverse distribution beams.The supporting frame is simple in structure and definite in stress; by the utilization of the inverted-triangle steel supports, support rigidity is improved, the support settlement amount is small, and safety risks are reduced effectively.

Description

A kind of cast-in-place beam inverted triangle formwork-support in whole hole and constructional method thereof
Technical field
The present invention relates to the technical field of bridge superstructure construction, more specifically it is the cast-in-place beam formwork-support in a kind of whole hole and constructional method thereof.
Background technology
Along with traffic infrastructure build fast development, some across rivers, valley and extreme terrain geologic media cast-in-situ bridge engineering build in more and more common. At present, whole hole cast-in-situ bridge usually adopts raft support method or bears frame method construction. When bridge crosses over rivers, soft foundation or precipitous valley, above-mentioned two kinds of methods need ground to process or arranges temporary support to meet the construction requirement of cast-in-place beam, it is big that it must manage cost height, difficulty of construction, temporary support foundation works amount is big, construction speed is slow, security risk height, even indivedual extreme environments cannot meet the construction requirement of cast-in-place beam.
Summary of the invention
The present invention is for avoiding the deficiency existing for above-mentioned prior art, it is provided that one supporting capacity is big, sinkability is little, construction speed is fast, basic without the need to temporary support, structure stress reasonable, peace tears the convenient and energy cast-in-place beam inverted triangle formwork-support in reusable whole hole and constructional method thereof open.
The present invention is that technical solution problem adopts following technical scheme:
The cast-in-place beam inverted triangle formwork-support in the whole hole of the present invention, is characterized in that:
The both sides concrete bearing platform of the cast-in-place beam in whole hole arranges cushion cap pre-embedded steel slab, a vertical steel pipe pillar stiffener on cushion cap pre-embedded steel slab; Arranging pier body pre-embedded steel slab respectively at the different heights place of both sides pier body, channel-section steel one end is associated on pier body pre-embedded steel slab admittedly, and the other end joins the steel pipe pillar stiffener of corresponding side admittedly, makes both sides pier body utilize channel-section steel to connect into entirety with corresponding steel pipe pillar stiffener;
Arranging at the top of described steel pipe pillar stiffener and unload frame sandbox, arrange horizontal bearing beam described unloading on frame sandbox, the shaping inverted-triangular Steel Truss sheet of integral solder is supported on the horizontal bearing beam of the both sides that are placed in its two ends respectively; Each transverse distribution beam is set at the interval, top of described inverted-triangular Steel Truss sheet, described transverse distribution beam lays bamboo glue pattern plate.
The cast-in-place beam inverted triangle formwork-support in the whole hole of the present invention, it is characterized in that: described inverted-triangular Steel Truss sheet is inverted isosceles triangular structure, it it is the base taking horizontal bar as trilateral, taking symmetrical big brace as trilateral waist, base have central vertical rod to be connected between central point A and the summit B of trilateral, there is side montant to be connected respectively between the central point C and base of both sides trilateral waist, have brace to be connected at both sides trilateral waist respectively between central point C and the central point A on base; Described horizontal bar, big brace, central vertical rod, side montant and brace are Two bors d's oeuveres channel-section steel component, are welded as entirety by node plate between described each Two bors d's oeuveres channel-section steel component.
The cast-in-place beam inverted triangle formwork-support in the whole hole of the present invention, is characterized in that: big brace in described inverted-triangular Steel Truss sheet and the angle between central vertical rod are 45 �� of-60 �� of angles.
The constructional method of the cast-in-place beam inverted triangle formwork-support in the whole hole of the present invention, is characterized in that carrying out as follows:
Step 1, construction concrete bearing platform and coagulation knoll body, and cushion cap pre-embedded steel slab and pier body pre-embedded steel slab are set;
Step 2, on described cushion cap pre-embedded steel slab vertical steel pipe pillar stiffener, weld channel-section steel at the different heights place of pier body, make both sides pier body utilize channel-section steel to connect into entirety with corresponding steel pipe pillar stiffener;
Step 3, the top of steel pipe pillar stiffener arrange unload frame sandbox, described unloading, frame sandbox arranges horizontal bearing beam;
Step 4, inverted-triangular Steel Truss sheet shaping for integral solder is placed on horizontal bearing beam, transverse distribution beam and bamboo glue pattern plate is set successively at the top of inverted-triangular Steel Truss sheet, completes the construction of the cast-in-place beam inverted triangle formwork-support in whole hole.
Compared with the prior art, the useful effect of the present invention is embodied in:
1, the cast-in-place beam in the whole hole of the present invention inverted triangle formwork-support simplicity of design, structure stress is clear and definite, adopts its stiffness of support height of inverted-triangular steel supporting structure, support sinkability little, stent safety height;
2, the cast-in-place beam inverted triangle formwork-support in the whole hole of the present invention without the need to carrying out basement process or arranges temporary support basis, has saved construction cost, has reduced construction safety risk, has accelerated construction speed;
3, the cast-in-place beam in the whole hole of the present invention inverted triangle formwork-support steel using amount is few, peace is torn open conveniently, can be reused, and cost amortization is few, remarkable benefit.
Accompanying drawing explanation
Fig. 1 is facade structures schematic diagram of the present invention;
Number in the figure: the 1 cast-in-place beam in whole hole, 2 cushion caps, 3 cushion cap pre-embedded steel slabs, 4 pier bodies, 5 pier body pre-embedded steel slabs, 6 steel pipe pillar stiffeners, 7 channel-section steels, 9 horizontal bearing beams, 10 inverted-triangular Steel Truss sheets, 11 transverse distribution beams, 12 bamboo glue pattern plates, 13 horizontal bars, 14 big braces, 15 braces, 16 central vertical rod, 17 side montants.
Embodiment
See Fig. 1, the cast-in-place beam inverted triangle formwork-support in whole hole in the present embodiment, is characterized in that:
The both sides concrete bearing platform 2 of the cast-in-place beam 1 in whole hole arranges cushion cap pre-embedded steel slab 3, a vertical steel pipe pillar stiffener 6 on cushion cap pre-embedded steel slab 3; Arranging pier body pre-embedded steel slab 5 respectively at the different heights place of both sides pier body 4, channel-section steel 7 one end is associated on pier body pre-embedded steel slab 5 admittedly, and the other end joins the steel pipe pillar stiffener 6 of corresponding side admittedly, makes both sides pier body 4 utilize channel-section steel 7 to connect into entirety with corresponding steel pipe pillar stiffener 6.
Arranging at the top of steel pipe pillar stiffener 6 and unload frame sandbox 8, arrange horizontal bearing beam 9 unloading on frame sandbox 8, the shaping inverted-triangular Steel Truss sheet 10 of integral solder is supported on the horizontal bearing beam 9 of the both sides that are placed in its two ends respectively; Each transverse distribution beam 11 is set at the interval, top of inverted-triangular Steel Truss sheet 10, transverse distribution beam 11 is laid bamboo glue pattern plate 12.
In concrete enforcement, inverted-triangular Steel Truss sheet 10 is inverted isosceles triangular structure, it it is the base taking horizontal bar 13 as trilateral, taking symmetrical big brace 14 as trilateral waist, base have central vertical rod 16 to be connected between central point A and the summit B of trilateral, there is side montant 17 to be connected respectively between the central point C and base of both sides trilateral waist, have brace 15 to be connected at both sides trilateral waist respectively between central point C and the central point A on base; Horizontal bar 13, big brace 14, central vertical rod 16, side montant 17 and brace 15 are Two bors d's oeuveres channel-section steel component, are welded as entirety by node plate between each Two bors d's oeuveres channel-section steel component; Big brace 14 in inverted-triangular Steel Truss sheet 10 and the angle between central vertical rod 16 are 45 �� of-60 �� of angles;
Wall screw is adopted to be connected between steel pipe pillar stiffener 6 with cushion cap pre-embedded steel slab 3, all adopting welding to be connected between channel-section steel 7 with steel pipe pillar stiffener 6 and pier body pre-embedded steel slab 5, horizontal bearing beam 9 is that the requirement according to bearing capacity adopts Two bors d's oeuveres or spells joist steel more; Need to arrange horizontal-associate between the direction across bridge of inverted-triangular Steel Truss sheet 10 and steel pipe pillar stiffener 6, laterally stable do not toppled to guarantee; Each Two bors d's oeuveres channel-section steel component in inverted-triangular Steel Truss sheet 10 all welds stiffener at node plate place, to prevent Two bors d's oeuveres channel-section steel component partial unstability; For guaranteeing the stability under loading of steel pipe pillar stiffener 6 and do not damage cushion cap 2, steel pipe pillar stiffener 6 width between centers cushion cap limit is not less than 1m.
In the present embodiment, the constructional method of the cast-in-place beam inverted triangle formwork-support in whole hole carries out as follows:
Step 1, construction concrete bearing platform 2 and coagulation knoll body 4, and cushion cap pre-embedded steel slab 3 and pier body pre-embedded steel slab 5 are set;
Step 2, on cushion cap pre-embedded steel slab 3 vertical steel pipe pillar stiffener 6, weld channel-section steel 7 at the different heights place of pier body 4, make both sides pier body 4 utilize channel-section steel 7 to connect into entirety with corresponding steel pipe pillar stiffener 6;
Step 3, arrange at the top of steel pipe pillar stiffener 6 and unload frame sandbox 8, frame sandbox 8 arranges horizontal bearing beam 9 unloading;
Step 4, inverted-triangular Steel Truss sheet 10 shaping for integral solder is placed on horizontal bearing beam 9, transverse distribution beam 11 and bamboo glue pattern plate 12 is set successively at the top of inverted-triangular Steel Truss sheet 10, completes the construction of the cast-in-place beam inverted triangle formwork-support in whole hole; The follow-up cast-in-place construction that can carry out the cast-in-place beam 1 in whole hole on bamboo glue pattern plate 12.

Claims (4)

1. the cast-in-place beam inverted triangle formwork-support in whole hole, is characterized in that:
The both sides concrete bearing platform (2) in the cast-in-place beam in whole hole (1) arranges cushion cap pre-embedded steel slab (3), the upper vertical steel pipe pillar stiffener (6) of cushion cap pre-embedded steel slab (3); At the different heights place of both sides pier body (4), pier body pre-embedded steel slab (5) is set respectively, channel-section steel (7) one end is associated on pier body pre-embedded steel slab (5) admittedly, the other end joins the steel pipe pillar stiffener (6) of corresponding side admittedly, makes both sides pier body (4) utilize channel-section steel (7) to connect into entirety with corresponding steel pipe pillar stiffener (6);
Arrange at the top of described steel pipe pillar stiffener (6) and unload frame sandbox (8), arranging horizontal bearing beam (9) on frame sandbox (8) described unloading, shaping inverted-triangular Steel Truss sheet (10) of integral solder is supported on the horizontal bearing beam (9) of the both sides that are placed in its two ends respectively; Each transverse distribution beam (11) is set at the interval, top of described inverted-triangular Steel Truss sheet (10), described transverse distribution beam (11) lays bamboo glue pattern plate (12).
2. the cast-in-place beam inverted triangle formwork-support in whole hole according to claim 1, it is characterized in that: described inverted-triangular Steel Truss sheet (10) is inverted isosceles triangular structure, it it is the base taking horizontal bar (13) as trilateral, taking symmetrical big brace (14) as trilateral waist, the central vertical rod (16) that has between central point A and the summit B of trilateral on base is connected, side montant (17) is had to be connected respectively between the central point C and base of both sides trilateral waist, the brace (15) that has respectively between central point C and the central point A on base at both sides trilateral waist is connected, described horizontal bar (13), big brace (14), central vertical rod (16), side montant (17) and brace (15) are Two bors d's oeuveres channel-section steel component, are welded as entirety by node plate between described each Two bors d's oeuveres channel-section steel component.
3. the cast-in-place beam inverted triangle formwork-support in whole hole according to claim 2, is characterized in that: big brace (14) in described inverted-triangular Steel Truss sheet (10) and the angle between central vertical rod (16) are 45 �� of-60 �� of angles.
4. a constructional method for the cast-in-place beam inverted triangle formwork-support in whole hole according to claim 1, is characterized in that carrying out as follows:
Step 1, construction concrete bearing platform (2) and coagulation knoll body (4), and cushion cap pre-embedded steel slab (3) and pier body pre-embedded steel slab (5) are set;
Step 2, described cushion cap pre-embedded steel slab (3) upper vertical steel pipe pillar stiffener (6), weld channel-section steel (7) at the different heights place of pier body (4), make both sides pier body (4) utilize channel-section steel (7) to connect into entirety with corresponding steel pipe pillar stiffener (6);
Step 3, the top of steel pipe pillar stiffener (6) arrange unload frame sandbox (8), described unloading, frame sandbox (8) arranges horizontal bearing beam (9);
Step 4, inverted-triangular Steel Truss sheet (10) shaping for integral solder is placed on horizontal bearing beam (9), transverse distribution beam (11) and bamboo glue pattern plate (12) are set successively at the top of inverted-triangular Steel Truss sheet (10), complete the construction of the cast-in-place beam inverted triangle formwork-support in whole hole.
CN201610147860.7A 2016-03-14 2016-03-14 Whole-span cast-in-place beam inverted-triangle formwork supporting frame and construction method thereof Pending CN105625193A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115976976A (en) * 2023-03-17 2023-04-18 中化学交通建设集团有限公司 Large-scale rapid assembling type model of midspan non-landing support and construction method thereof

Citations (8)

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Publication number Priority date Publication date Assignee Title
CN103015596A (en) * 2012-12-11 2013-04-03 山西汾西矿业(集团)有限责任公司 Detachable steel structure platform and construction method thereof
CN103233426A (en) * 2013-04-27 2013-08-07 中国建筑第六工程局有限公司 Bailey beam support free of buttress in soft foundation and supporting method thereof
CN103243652A (en) * 2013-05-06 2013-08-14 中铁二十四局集团安徽工程有限公司 Large-span non-floor type cast-in-place beam falsework and construction method thereof
CN203174879U (en) * 2013-04-17 2013-09-04 河南天丰节能板材科技股份有限公司 Quick-install truss and quick-install house using same
CN203546618U (en) * 2013-11-01 2014-04-16 中铁十七局集团第二工程有限公司 Splayed supporting frame for bridge cast-in-place concrete formwork
CN103866696A (en) * 2014-03-26 2014-06-18 中铁二十四局集团安徽工程有限公司 Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge
KR20150130099A (en) * 2014-05-13 2015-11-23 주식회사 제이케이브릿지 Steel and concrete composite segment for through bridge, and bridge construction method using the same
CN205382428U (en) * 2016-03-14 2016-07-13 中铁二十四局集团安徽工程有限公司 Whole cast -in -place roof beam formwork support frame of falling triangle in hole

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015596A (en) * 2012-12-11 2013-04-03 山西汾西矿业(集团)有限责任公司 Detachable steel structure platform and construction method thereof
CN203174879U (en) * 2013-04-17 2013-09-04 河南天丰节能板材科技股份有限公司 Quick-install truss and quick-install house using same
CN103233426A (en) * 2013-04-27 2013-08-07 中国建筑第六工程局有限公司 Bailey beam support free of buttress in soft foundation and supporting method thereof
CN103243652A (en) * 2013-05-06 2013-08-14 中铁二十四局集团安徽工程有限公司 Large-span non-floor type cast-in-place beam falsework and construction method thereof
CN203546618U (en) * 2013-11-01 2014-04-16 中铁十七局集团第二工程有限公司 Splayed supporting frame for bridge cast-in-place concrete formwork
CN103866696A (en) * 2014-03-26 2014-06-18 中铁二十四局集团安徽工程有限公司 Cast-in-situ support of long-cantilever zero segment of short-pylon cable-stayed bridge
KR20150130099A (en) * 2014-05-13 2015-11-23 주식회사 제이케이브릿지 Steel and concrete composite segment for through bridge, and bridge construction method using the same
CN205382428U (en) * 2016-03-14 2016-07-13 中铁二十四局集团安徽工程有限公司 Whole cast -in -place roof beam formwork support frame of falling triangle in hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115976976A (en) * 2023-03-17 2023-04-18 中化学交通建设集团有限公司 Large-scale rapid assembling type model of midspan non-landing support and construction method thereof

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