CN107881924A - A kind of bent cap support - Google Patents

A kind of bent cap support Download PDF

Info

Publication number
CN107881924A
CN107881924A CN201711381608.3A CN201711381608A CN107881924A CN 107881924 A CN107881924 A CN 107881924A CN 201711381608 A CN201711381608 A CN 201711381608A CN 107881924 A CN107881924 A CN 107881924A
Authority
CN
China
Prior art keywords
truss
support
bent cap
jack
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711381608.3A
Other languages
Chinese (zh)
Inventor
郑先奇
刘宪纯
王法庭
汪浪浪
涂元康
乐国成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway 16th Bureau Group Co Ltd
Third Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Original Assignee
China Railway 16th Bureau Group Co Ltd
Third Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway 16th Bureau Group Co Ltd, Third Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd filed Critical China Railway 16th Bureau Group Co Ltd
Priority to CN201711381608.3A priority Critical patent/CN107881924A/en
Publication of CN107881924A publication Critical patent/CN107881924A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice

Abstract

The invention discloses a kind of bent cap support.The bent cap support is included to support the truss of bent cap and the cushion cap to load truss, and truss is provided with multiple lowering or hoisting gears to accurate adjustment truss support height and to coarse adjustment truss support height and the buttress detachably installed.Can being used cooperatively by lowering or hoisting gear and buttress, can not only coarse adjustment support bearing height, and can bearing height of the accurate adjusting bracket in construction, existing engineering construction field can be widely used in.

Description

A kind of bent cap support
Technical field
The present invention relates to engineering construction field, and in particular to a kind of bent cap support.
Background technology
With the fast development of China's communication, science of bridge building as the important component in traffic and transportation system, The construction of bridge, operation state play very important effect to expanding economy.In Bridge Design and work progress, adopt With long great cantilever Prestressed Slab Beams wide cut bridge floor, realize wide cut bridge floor multilane and pass through, greatly alleviate urban transportation and gather around Stifled problem.Engineering cost is significantly reduced, floor space is reduced, economizes the land resource, improve land utilization ratio, expand under bridge Headroom, space under bridge is set to be fully utilized.Especially Municipal Bridge Design and construction, bridge surrounding environment is to bridge The influence of girder construction type selecting is very big, should consider curb-to-curb width enough under bridge, considers that bridge structure exists with surrounding environment again Harmony spatially, meet the requirement of urban landscape.The long great cantilever bent cap of vase type pier is usually used in Bridge Design The structure type mutually arranged in pairs or groups with precast prestressed small box girder, with handsome in appearance, line style is smooth for it, and passage space is spacious under bridge, adopts Light is good, and the visual field is penetrating, convenient and quick construction, short time limit, the outstanding features such as cost is low and enjoy engineering construction and designer Favor.
Bent cap is the important component formed a connecting link in bridge structure, and the dead load and mobile load of superstructure are exactly to be passed by bent cap Pass pier stud and basis.Wide cut great cantilever Prestressed Slab Beams space under bridge is big, the enhancing of bridge direction across bridge span ability, and structure is resistance to Long property is strong compared with ordinary reinforced concrete structure.The bent cap of the long large_cantilever structure of wide cut, bridge top and the bottom structure is combined together, energy The bridge floor of wide cut multilane is provided and realizes the road travel that space under bridge utilizes.But the prestressing force lid of wide cut large_cantilever structure Beam, complex designing, construction difficulty is big, quality requirement is high.Long great cantilever bent cap top dead load, live load are big, jib-length The control of bent cap tip deflection is weight difficult point when larger, when wide cut grows up cantilever end amount of deflection more than design and code requirement, is influenceed Bent cap totally linear presentation quality and entity quality.In bridge construction, the complexity and wind of the long great cantilever Coping Construction of wide cut Dangerous larger, the structural linetype and presentation quality of bent cap are the primary indexs of Construction control.
Using scientific and reasonable, safety economy support erection scheme it is Coping Construction matter during the long great cantilever Coping Construction of wide cut Amount and progress monitoring and the key for reducing security risk.Conventional bent cap cast-in-place construction has raft support method, Hold Hoop method, rod iron The methods of method, pre-embedded steel slab bracket.Conventional bent cap cast-in-situ construction method has certain limitation.Can not be in carrying wide cut length Bearing height is accurately adjusted during great cantilever Coping Construction, applicability is not strong, while there is also floor space is big, construction is complicated, The problems such as high, is required to construction environment.
The content of the invention
It is an object of the present invention to be directed to above-mentioned the deficiencies in the prior art, a kind of bent cap support is proposed, can be more preferably in width The bearing height of effective adjusting bracket during the long great cantilever Coping Construction of width, it is widely portable to current various construction sites.
The present invention proposes a kind of bent cap support, for supporting the support of bent cap, including to support the truss of bent cap and use To carry the cushion cap of the truss, the truss is provided with multiple lowering or hoisting gears and use to truss support height described in accurate adjustment With truss support height and the buttress detachably installed described in coarse adjustment.
Further, the horizontal shellfish thunder distribution beam for supporting and protecting the bent cap is additionally provided with the truss.
Further, the truss includes being used to support the upper strata truss of the bent cap and for supporting the upper strata truss Lower floor's truss.
Further, it is additionally provided with the scissors support for stablizing the truss for reinforcing.
Further, the lowering or hoisting gear includes the jack for lifting, the bottom for installing the fixed jack Seat and the jacking unit at the top of the jack for jacking, supporting.
Further, the base includes the bearing cross beam for supporting the jack and increases described thousand for stable The web beam on jin top.
Further, the jacking unit includes lifting column and the use driven at the top of the jack and by jack The guide pipe being oriented to the lifting to lifting column.
Further, the guide pipe is fixedly connected with truss.
Further, the upper strata truss is rectangle.
Further, lower floor's truss is trapezoidal.
A kind of bent cap support of the present invention, being used cooperatively by lowering or hoisting gear and buttress, can not only coarse adjustment branch The bearing height of frame, and bearing height of the accurate adjusting bracket of energy in construction, can be widely used in existing engineering Construction field.
Brief description of the drawings
Fig. 1 is a kind of structural representation of bent cap support of the embodiment of the present invention;
Fig. 2 is a kind of lifting device structure schematic diagram of bent cap support of the embodiment of the present invention;
In figure:1- bent caps, 2- truss, 21- lowering or hoisting gears, 211- jack, 212- support beams, 213- web beams, 214- Lifting column, 215- guide pipes, 22- buttresses, 23- upper stratas truss, 24- lower floors truss, 3- cushion caps, 4- shellfish thunder distribution beams.
Embodiment
In order to illustrate the embodiments of the present invention more clearly with technical scheme of the prior art, control is illustrated below The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing, and obtain other embodiments.In addition, it is related to the relative position relation only represented between each part that belongs in orientation, and It is not absolute positional relation.
Refer to Fig. 1.The support of bent cap 1 of the embodiment of the present invention, for supporting the support of bent cap 1, including to Supporting cover The truss 2 of beam 1 and the cushion cap 3 to load truss 2, truss 2 are provided with multiple liftings to the bearing height of accurate adjustment truss 2 and filled Put 21 and to the bearing height of coarse adjustment truss 2 and the buttress 22 detachably installed.
Lowering or hoisting gear 21 is provided with truss 2 can accurately adjust the bearing height of truss 2, due to carrying out wide cut length When building construction of great cantilever bent cap 1, each construction parts are all large volume objects, and when building, the constructing operation such as docking, Requirement to error is that comparison is strict again, so the adjustment of this large volume article position compares during practice of construction It is more difficult, accurate position adjustment can be carried out to supporter using lowering or hoisting gear 21;Due to the size one of truss 2 and cushion cap 3 As can not all change, when needing to carry out higher bearing height, simple cushion cap 3 and the combined altitudes of truss 2 are unable to reach mesh Bearing height is marked, so at this moment carrying out the lifting to bearing height, buttress 22 in the form of buttress 22 is installed on truss 2 It is that model I45a two pieces of I-steel Two bors d's oeuveres form, selects the height of buttress 22 as needed, while two branch also may be selected The superposition support of pier 22, because the height regulation upper limit of lowering or hoisting gear 21 in the present embodiment is 45cm, so the buttress 22 used is single Layer height is 45cm, and double-layer overlapped degree of increasing is 90cm buttress 22.When target can not be reached by the regulation of lowering or hoisting gear 21 During height, that is, the height of the regulation needed is more than 45cm, it is necessary to adds a buttress 22 and is adjusted, then is filled by lifting Put 21 to carry out being accurately positioned regulation, not only ensure that construction quality, and and can enough makes the progress that construction is quick, safe, without Do over again redesign etc. unnecessary trouble.
The chord member of truss 2 selects I45a I-steel, and end brace uses I28a I-steel, and other web members are all using I18 I-steel.
Load truss 2 is act as due to cushion cap 3, this just illustrates that bent cap 1 and the weight of whole support concentrate on cushion cap 3 On, cushion cap 3 needs have very strong stability, particularly in the soft givey construction site of appearance in ground, the underground part of cushion cap 3 Ground is arranged with, ground can avoid cushion cap 3 from toppling over because of ground factor, sink;Cushion cap 3 can be poured with armored concrete simultaneously Build and form, greatly improve the steadiness of cushion cap 3, sub-truss 2 that can be more stable, make the stability of whole support system It is higher.
The horizontal shellfish thunder distribution beam 4 for supporting and protecting bent cap 1 is additionally provided with truss 2.Shellfish thunder distribution beam 4 directly adds With on truss 2, and directly being contacted with bent cap 1.Due to longer in the long lateral length of great cantilever bent cap 1 of wide cut, and weight is larger, So using horizontal shellfish thunder distribution beam 4 supporting surface of the bottom of bent cap 1 can not only be made to obtain comprehensive support, avoid local pressure and Bent cap 1 or truss 2 is caused to deform and be damaged;Preferably the weight of supporter can also be uniformly transferred to truss 2 simultaneously, and And after use shellfish thunder distribution beam 4, it is possible to reduce the design length of truss 2 and cushion cap 3, the space of job site can be improved Utilize, greatly reduce construction operation area shared by mounting system, can effectively solve on overpass bridge with being constructed under bridge Cross-operation problem, avoid whole mounting system and space under bridge is driven a vehicle using the influence of newly-built road construction and builder's road Interference.Be highly suitable for without enough ground places and the magnitude of traffic flow it is big in the case of use.
Truss 2 includes being used for the upper strata truss 23 for supporting bent cap 1 and lower floor's truss 24 for supporting upper strata truss 23.On Layer truss 23 is rectangle;Lower floor's truss 24 is trapezoidal.Purpose is in order to preferably strengthen the mobility of truss 2 and flexibility, just In removing and installing, while the buttress 22 for adjusting bearing height can also be arranged between upper strata truss 23 and lower floor's truss 24, Lower floor's truss 24 is that trapezoidal purpose is during support, truss 2 is had more preferable support force and stability.
It is additionally provided with the scissors support for reinforcing stable truss 2.In order to prevent bent cap 1 from tilting or topple over, construction When in the right and left of bent cap 1 be respectively equipped with the support of dismountable I16 I-steel scissors, scissors support can be actual according to bent cap 1 Use is highly overlapped, while adds the regulation of buttress 22, the progress height of lowering or hoisting gear 21.Scissors support respectively with upper strata purlin Frame 23 and lower floor's truss 24 connect, and make to form a stable support system, add the reliability of whole support system.
Refering to Fig. 2.Lowering or hoisting gear 21 includes jack 211, the base for installing fixed jack 211 for lifting With the jacking unit for being used to jack, support located at the top of jack 211.The 12 pairs of screw jack used altogether in the present embodiment 211, the outermost 2 of truss 2 is to being the spiral shell that maximum support is 50 tons for the screw jack 211 that maximum support is 100 tons, inner side Revolve jack 211.Jack 211 is placed on the crossbeam of upper strata truss 23.
Base includes the bearing cross beam 212 for supporting jack 211 and increases the reinforcement horizontal stroke of jack 211 for stabilization Beam 213.During due to 211 stress of jack, base pressure is larger, so placing bearing cross beam 212 in the bottom of jack 211 and adding It is hidden that safety greatly reduces to make jack 211 more stable when jack 211 is supported or jacked in deck transverse 213 The generation of trouble, while the position height of jack 211 can also be adjusted by web beam 213.
Jacking unit includes the lifting column 214 driven at the top of jack 211 and by jack 211 and to lifting The guide pipe 215 that the lifting of post 214 is oriented to.Guide pipe 215 is fixedly connected with truss 2.
During jacking, the square lifting column 214 on top is oriented to by square guide pipe 215 to be jacked jack 211, real Existing lift in height regulation, ensures jack 211 during jacking, square the leading by square guide pipe 215 of lifting column 214 To making it not shifted during jacking, it is ensured that safety of the jack 211 in jacking process.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's Protection domain.

Claims (10)

  1. A kind of 1. bent cap support, for supporting bent cap(1)Support, it is characterised in that:Including supporting bent cap(1)Truss (2)With carrying the truss(2)Cushion cap(3), the truss(2)It is provided with multiple to truss described in accurate adjustment(2)Branch Support the lowering or hoisting gear of height(21)With to truss described in coarse adjustment(2)Bearing height and the buttress detachably installed(22).
  2. A kind of 2. bent cap support as claimed in claim 1, it is characterised in that:The truss(2)On be additionally provided with for support and Protect the bent cap(1)Horizontal shellfish thunder distribution beam(4).
  3. A kind of 3. bent cap support as claimed in claim 1, it is characterised in that:The truss(2)Including for supporting the lid Beam(1)Upper strata truss(23)With for supporting the upper strata truss(23)Lower floor's truss(24).
  4. A kind of 4. bent cap support as claimed in claim 1, it is characterised in that:It is additionally provided with and stablizes the truss for reinforcing(2) Scissors support.
  5. A kind of 5. bent cap support as claimed in claim 1, it is characterised in that:The lowering or hoisting gear(21)Including for lifting Jack(211), for installing the fixed jack(211)Base and located at the jack(211)Top is used to push up Rise, the jacking unit of supporting.
  6. A kind of 6. bent cap support as claimed in claim 5, it is characterised in that:The base includes being used to support the jack (211)Bearing cross beam(212)Increase the jack with for stable(211)Web beam(213).
  7. A kind of 7. bent cap support as claimed in claim 5, it is characterised in that:The jacking unit includes being located at the jack (211)Top and by jack(211)The lifting column of drive(214)With to lifting column(214)Lifting be oriented to Guide pipe(215).
  8. A kind of 8. bent cap support as claimed in claim 7, it is characterised in that:The guide pipe(215)With truss(2)It is fixed to connect Connect.
  9. A kind of 9. bent cap support as claimed in claim 3, it is characterised in that:The upper strata truss(23)For rectangle.
  10. A kind of 10. bent cap support as claimed in claim 3, it is characterised in that:Lower floor's truss(24)To be trapezoidal.
CN201711381608.3A 2017-12-20 2017-12-20 A kind of bent cap support Pending CN107881924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711381608.3A CN107881924A (en) 2017-12-20 2017-12-20 A kind of bent cap support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711381608.3A CN107881924A (en) 2017-12-20 2017-12-20 A kind of bent cap support

Publications (1)

Publication Number Publication Date
CN107881924A true CN107881924A (en) 2018-04-06

Family

ID=61771181

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711381608.3A Pending CN107881924A (en) 2017-12-20 2017-12-20 A kind of bent cap support

Country Status (1)

Country Link
CN (1) CN107881924A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110644371A (en) * 2019-09-30 2020-01-03 中铁大桥局集团第五工程有限公司 Prefabricated capping beam installation method and system
WO2021078309A1 (en) * 2019-10-21 2021-04-29 宁波市政工程建设集团股份有限公司 Temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and method of constructing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110644371A (en) * 2019-09-30 2020-01-03 中铁大桥局集团第五工程有限公司 Prefabricated capping beam installation method and system
WO2021078309A1 (en) * 2019-10-21 2021-04-29 宁波市政工程建设集团股份有限公司 Temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and method of constructing same

Similar Documents

Publication Publication Date Title
CN106012864B (en) A kind of method of the overall erection & lift of bridge arch rib
CN205205635U (en) Stride footpath bailey frame steel suspension bridge structure greatly
CN207714155U (en) A kind of bent cap holder
CN107881924A (en) A kind of bent cap support
CN104790297A (en) Flexible arch splicing method for steel trussed beams
CN102828469A (en) Positioning mounting construction method for triangular steel constructed pillar of inclined-leg steel box
CN203296361U (en) Long-span steel structure cross assembling hoisting platform
CN204385629U (en) A kind of support for the construction of suspension bridge king-tower top rail
CN203821248U (en) Steel pipe arch main arch assembling supporting system
CN103266567B (en) Steel truss cantilever supporting frame and its implementation
CN106012791B (en) Three across the antinode steel concretes of work beam shear wave three combine T-shaped continuous beam
CN206655065U (en) Combined type support post and overhead rail system for overhead rail system
CN106939553A (en) A kind of Steel Bridge Deck and steel box arch rib installation method
CN102797224B (en) Paving method and template supporting device of bridge deck slab
CN206655062U (en) Concrete support column and overhead rail system for overhead rail system
CN205856999U (en) Three combine T-shaped continuous beam across antinode work beam shear wave three steel concrete
CN105625177A (en) Steel truss suspending support construction method
CN206655113U (en) Lattice support post and overhead rail system for overhead rail system
CN210856953U (en) Tower for hoisting construction of steel arch frame support-free cable
CN203500656U (en) River-crossing bridge frame for cables
CN206655064U (en) Type steel support column and overhead rail system for overhead rail system
CN103453219B (en) Cable crosses the river crane span structure
CN213772963U (en) Floor type cantilever truss for cast-in-situ cover beam in water of large cantilever of municipal bridge
CN212475848U (en) Bridge component hoisting device
CN212404775U (en) Single-arch-rib framing swivel construction steel box arch bridge

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination