CN206219990U - A kind of pier support assembled prepressing device high - Google Patents

A kind of pier support assembled prepressing device high Download PDF

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Publication number
CN206219990U
CN206219990U CN201621224483.4U CN201621224483U CN206219990U CN 206219990 U CN206219990 U CN 206219990U CN 201621224483 U CN201621224483 U CN 201621224483U CN 206219990 U CN206219990 U CN 206219990U
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China
Prior art keywords
distribution beam
pier
device high
prepressing device
beam group
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CN201621224483.4U
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Chinese (zh)
Inventor
周乐平
胡义新
李送根
周舒
宋永哲
刘宁波
李志成
欧华平
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CCCC Second Harbor Engineering Co
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CCCC Second Harbor Engineering Co
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Abstract

The utility model discloses a kind of pier support assembled prepressing device high, it includes bridge pier, support is provided with the bridge pier;Also include space truss;The space truss is articulated with the bridge pier top;The space truss bottom is connected with the first stress distribution beam group;The pedestal upper end is provided with the second stress distribution beam group;Hydraulic jack is provided between the first stress distribution beam group and the second stress distribution beam group.The utility model simple structure, assembling and disassembling are convenient, the precompressed test to each bridge pier and its support can not only efficiently and rapidly be realized, simultaneously and can effectively eliminate inelastic deformation of the support in precompressed, draw exactly each bridge pier and support respective loads effect under deformation values.

Description

A kind of pier support assembled prepressing device high
Technical field
The utility model is related to a kind of pier pre-pressing bracket device high, belongs to Bridge Construction technical field, specific a kind of It is easy to pacify the device torn open suitable for pier pre-pressing bracket high.
Background technology
Precompressed is an important process in high-pier and long-span bridge construction.On the one hand it is to detect the degree of safety of support, disappearing Except the inelastic deformation of support.On the other hand it is to observe the deformation that the basis and support are produced in the presence of corresponding load Value, can calculate elastic deformation value, be supported for the mould absolute altitude for unloading after-poppet provides data.
Conventional stent preloading method is divided into preloading and anti-fulcrum preloading method.
Piling prepressing is to carry out classification piling prepressing using the loading of the heap such as sand pocket, concrete block, water tank, steel, there is heap Loading capacity is too big, it is necessary to prepare a large amount of heap loadings in advance, preloading is time-consuming, the shortcomings of security is poor.At the same time, generally The piling prepressing simulating load effect of use is poor, and the structural simulation load pre- press operation uneven for load assignment is more tired It is difficult.
Anti- fulcrum preloading method, that is, apply the side of counter-force precompressed to support using tension steel strand or finish rolling deformed bar Method, in such as disclosing a kind of pier high, large-tonnage works rack construction in Chinese invention patent specification CN101139819A Steel strand reversal fulcrum preloading method, it is comprised the following steps:Selected steel strand wires:Steel strand wires precompressed gross weight presses works concrete Conduct oneself with dignity and simultaneously consider that certain load factor carries out budget by code requirement, determine required steel strand wires type, quantity and each The tensioning force value applied needed for steel strand wires;Lay and anchoring steel strand wires;Steel strand tension end auxiliary facility is set;Carry out in order Precompressed;Observation settling amount and determination camber:Data to observing carry out statistical analysis, determine elasticity and inelastic deformation Amount, with reference to the amount of deflection calculated in inspection calculation data, camber is determined in analysis.Although it can effectively solve pier high, large-tonnage structure Precompressed problem in thing rack construction project, but descend thereon anchor point connect it is distant, connection, anchoring etc. link it is more, Cumbersome, anchor point change is difficult, overall relatively costly, and has the deficiencies such as certain potential safety hazard.
The content of the invention
For the defect that above-mentioned prior art is present, the purpose of this utility model seeks to solve above-mentioned background technology not Foot, there is provided a kind of pier support assembled prepressing device high, it is not only simple in structure, and can conveniently and efficiently realize bridge pier base The detection of the deformation values of plinth and support under corresponding load action.
In order to solve the above technical problems, the utility model employs such a pier support assembled prepressing device high, its Including bridge pier, support is provided with the bridge pier;Also include space truss;The space truss is articulated with the bridge pier top; The space truss bottom is connected with the first stress distribution beam group;The pedestal upper end is provided with the second stress distribution beam group;Institute State and be provided with hydraulic jack between the first stress distribution beam group and the second stress distribution beam group.
In a kind of preferred embodiment of the present utility model, the bottom of the space truss is provided with pin hole Default steel plate;The top of the bridge pier is embedded with the built-in fitting for connecting the default steel plate.
In a kind of preferred embodiment of the present utility model, the built-in fitting is π shapes;The built-in fitting include reinforcing bar, Steel plate and the reserved otic placode with pin hole;The reinforcing bar is vertically fixed in the steel plate lower end;The reserved otic placode is vertically solid It is connected to the steel plate upper end.
In a kind of preferred embodiment of the present utility model, multiple is welded between the steel plate and the reserved otic placode Ribbed stiffener.
In a kind of preferred embodiment of the present utility model, the space truss includes the main truss of two panels parallel arrangement Frame;The main couple is fixedly connected with each other by connecting rod.
In a kind of preferred embodiment of the present utility model, the cylinder ends of the hydraulic jack removably with institute State the connection of the second stress distribution beam group;The installation site that the hydraulic jack is withstood in the second stress distribution beam group is adjustable; The tailpiece of the piston rod of the hydraulic jack supports the first stress distribution beam group.
In a kind of preferred embodiment of the present utility model, the main couple is isosceles trapezoid.
In a kind of preferred embodiment of the present utility model, the main couple include top boom, lower boom, diagonal web member and Perpendicular web member;The top boom is vertically arranged in parallel in lower boom top;The pole length that winds up is less than under described Chord member length;Multiple diagonal web members and the perpendicular web member are connected between the top boom and the lower boom.
In a kind of preferred embodiment of the present utility model, the first stress distribution beam group includes upper transverse distribution beam With upper longitudinal distribution beam;The upper transverse distribution beam is fixed in the bottom of the lower boom of the space truss;The upper longitudinal direction point The bottom of the upper transverse distribution beam is fixed in beam.
In a kind of preferred embodiment of the present utility model, the second stress distribution beam group includes lower transverse distribution beam With lower longitudinal distribution beam;The lower transverse distribution beam is fixed in the pedestal upper end;Lower longitudinal distribution beam is fixed in described Lower transverse distribution beam upper end.
In a kind of preferred embodiment of the present utility model, default hanger is provided with the space truss.
The beneficial effects of the utility model are:The utility model simple structure, assembling and disassembling are convenient, can not only be efficiently fast Realize promptly to the precompressed of each bridge pier and its support test, while and can effectively to eliminate support non-in precompressed Elastic deformation, draws the deformation values of each bridge pier and support under respective loads effect exactly;The utility model is pre-buried by π shapes The setting of part, facilitates the installation of space truss and uses, and effectively increases operating efficiency of the present utility model and versatility;It is logical Cross the first stress distribution beam group of setting and the second stress distribution beam group causes that load is distributed more uniformly, therefore each bridge for drawing The deformation Value Data of pier and its support is more accurate;By the design of trapezoidal solids truss, the utility model is effectively improved Rigidity and security.
Brief description of the drawings
Fig. 1 is a kind of structural representation of pier support assembled prepressing device high of the utility model embodiment;
Fig. 2 is a kind of structural side view of pier support assembled prepressing device high of the utility model embodiment;
Fig. 3 is a kind of pier pre-pressing bracket structure high arrangement of pier support assembled prepressing device high of the utility model embodiment Figure;
Fig. 4 is the utility model embodiment a kind of pier top built-in fitting and space truss of pier support assembled prepressing device high Default steel plate connection drawing;
In figure:1- top booms, 2- lower booms, 3- diagonal web members, 4- erects web member, and 5- presets steel plate, and 6- presets hanger, and 7- is coupled Bar, 8- bridge piers, 9- built-in fittings, 9.1- reinforcing bars, 9.2- ribbed stiffeners, 9.3- steel plates, 9.4- reserves otic placode, the upper transverse distribution beams of 10-, The upper longitudinal direction distribution beams of 11-, transverse distribution beam under 12-, longitudinal distribution beam, 14- hydraulic jacks, 15- bearing pins under 13-.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this Utility model, is not used to limit the utility model.
From the structural representation of the pier support assembled prepressing device a kind of high shown in Fig. 1 to Fig. 4, the utility model Including bridge pier 8, support is provided with bridge pier 8;Also include space truss;Space truss is articulated with the top of the bridge pier 8;Three-dimensional purlin Frame bottom is connected with the first stress distribution beam group;Pedestal upper end is provided with the second stress distribution beam group;First stress distribution beam group Hydraulic jack 14 is provided between the second stress distribution beam group;The bottom of space truss is provided with default with pin hole Steel plate 5;The top of bridge pier 8 is embedded with the built-in fitting 9 for connecting default steel plate 5;Built-in fitting 9 is π shapes;Built-in fitting 9 includes steel Muscle 9.1, steel plate 9.3 and the reserved otic placode 9.4 with pin hole;Reinforcing bar 9.1 is vertically fixed in the lower end of steel plate 9.3;Reserved otic placode 9.4 are vertically fixed in the upper end of steel plate 9.3;Multiple ribbed stiffeners 9.2 are welded between steel plate 9.3 and reserved otic placode 9.4;Space truss Main couple including two panels parallel arrangement;Main couple is fixedly connected with each other by connecting rod 7;Main couple is isosceles trapezoid;Main couple bag Include top boom 1, lower boom 2, diagonal web member 3 and perpendicular web member 4;Top boom 1 is vertically arranged in parallel in the top of lower boom 2;On The length of chord member 1 is less than the length of lower boom 2;Multiple diagonal web members 3 and perpendicular web member 4 are connected between top boom 1 and lower boom 2;First Stress distribution beam group includes upper transverse distribution beam 10 and upper longitudinal distribution beam 11;Upper transverse distribution beam 10 is fixed in space truss The bottom of lower boom 2;Upper longitudinal distribution beam 11 is fixed in the bottom of transverse distribution beam 10;Under second stress distribution beam group includes Transverse distribution beam 12 and lower longitudinal distribution beam 13;Lower transverse distribution beam 12 is fixed in pedestal upper end;Lower longitudinal distribution beam 13 is affixed In the lower upper end of transverse distribution beam 12;Default hanger 6 is provided with space truss.
During using the utility model, first, prefabricated space truss structure is shifted to an earlier date in back court.The space truss is mutual by two panels The main couple assembly parallel, shape is trapezoidal is constituted, and is completed in back court processing and fabricating.Wherein parallel chord truss by top boom 1, Lower boom 2, diagonal web member 3, perpendicular web member 4 and coupling bar 7 are constituted, and chord member is made with web member using angle steel, wherein top boom 1 is parallel with lower boom 2, and lower boom 2 is longer than top boom 1, and middle part is provided with some perpendicular web members 4, is used by oblique abdomen to both sides from middle part The lattice piece (triangular element) that bar 3 is constituted with perpendicular web member 4, eventually form stabilization by straight-bar constitute with triangular element Truss structural.Coupling bar 7 between two panels parallel chord truss using triangular element arrangement form is attached.
The bottom of space truss lower boom 2 is welded with a number of I-steel by certain horizontal spacing, is received as truss precompressed The upper transverse distribution beam 10 of power, meanwhile, there is downward opening channel-section steel as upper longitudinal direction point in the upper bottom welding of transverse distribution beam 10 With beam 11, hydraulic jack 14 directly acts on longitudinal distribution beam 11 and can be along the upper longitudinal length of longitudinal distribution beam 11 during precompressed Direction adjusts the active position of hydraulic jack 14, the i.e. cylinder ends of hydraulic jack 14 removably with the specific limits Longitudinal distribution beam 13 is connected;Installation site of the hydraulic jack 14 in lower longitudinal distribution beam 13 is adjustable;Hydraulic jack 14 The upper longitudinal direction distribution beam 11 of tailpiece of the piston rod support, the upper length of longitudinal distribution beam 11 is pressed depending on actual conditions, wherein hydraulic jack 14 Fixed including bolt with the connected mode of lower longitudinal distribution beam 13 or fixed using other fitments, as long as can be real Existing hydraulic jack 14 is detachably connected to lower longitudinal distribution beam 13.
Space truss central bottom has four blocks of default steel plates 5 for being provided with pin hole, for connecting with pre-embedded steel slab 9 on bridge pier 8 Connect.Top boom 1 is welded with four pieces of default otic placodes 6 with holes, so that the lifting during being conveniently used in turn.
During Bridge Pier Construction at the top of pier stud pre-buried some built-in fittings 9.Built-in fitting 9 is in " π " shape, by steel plate 9.3 and reinforcing bar 9.1 Perforation plug welding is welded, and with reserved otic placode 9.4 by bilateral fillet weld seam, vertical placement afterwards is embedded in structural column It is interior, bond stress is formed by casting concrete.Pin hole is provided with reserved otic placode 9.4, otic placode 9.4 is reserved by latch and solid Default steel plate 5 on truss is articulated and connected.To ensure structural strength, strengthen the connection of steel plate 9.3 and reserved otic placode 9.4, Some ribbed stiffeners 9.2 are welded therebetween.
Before pre-pressing bracket, in order to more advantageously simulate the load assignment of actual concrete, load is effectively allocated to down On portion's support, transverse distribution beam 12, lower longitudinal distribution beam 13, distribution beam in the case where frame upper template is successively arranged by order up and down Quantity, spacing and position should be consistent with the distribution of concrete actual loading, can true simulating load.
Hydraulic jack is placed in longitudinal distribution beam afterwards, and is lifted space truss as suspension centre using default hanger 6 To the top of bridge pier 8, then default steel plate 5 will be attached with pier top built-in fitting 9 on truss by bearing pin 15.
After space truss installation is ready, by adjusting the oil pressure of hydraulic jack 14 progressively applying precompressed lotus symmetrical to support Carry, until meeting pre- pressure request.Space truss is dismantled after the completion of precompressed, and is lifted to next precompressed position, repeated Above step is until complete all precompressed work.
It should be appreciated that the above, specific embodiment only of the present utility model, but protection of the present utility model Scope is not limited thereto, and any those of ordinary skill in the art, can be light in the technical scope disclosed by the utility model The change or replacement being readily conceivable that, should all cover within protection domain of the present utility model.

Claims (10)

1. a kind of pier support assembled prepressing device high, including bridge pier (8), support is provided with the bridge pier (8);Its feature exists In:Also include space truss;The space truss is articulated with the bridge pier (8) top;The space truss bottom is connected with One stress distribution beam group;The pedestal upper end is provided with the second stress distribution beam group;The first stress distribution beam group with it is described Hydraulic jack (14) is provided between second stress distribution beam group.
2. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:The space truss Bottom is provided with the default steel plate (5) with pin hole;The top of the bridge pier (8) is embedded with for connecting the default steel plate (5) built-in fitting (9).
3. a kind of pier support assembled prepressing device high according to claim 2, it is characterised in that:The built-in fitting (9) It is π shapes;Reserved otic placode (9.4) of the built-in fitting (9) including reinforcing bar (9.1), steel plate (9.3) and with pin hole;The steel Muscle (9.1) is vertically fixed in the steel plate (9.3) lower end;The reserved otic placode (9.4) is vertically fixed on the steel plate (9.3) End.
4. a kind of pier support assembled prepressing device high according to claim 3, it is characterised in that:The steel plate (9.3) Multiple ribbed stiffeners (9.2) are welded between the reserved otic placode (9.4).
5. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:The space truss bag Include the main couple of two panels parallel arrangement;The main couple is fixedly connected with each other by connecting rod (7).
6. a kind of pier support assembled prepressing device high according to claim 5, it is characterised in that:The main couple for etc. Waist is trapezoidal;The main couple includes top boom (1), lower boom (2), diagonal web member (3) and perpendicular web member (4);Top boom (1) edge Vertical direction is arranged in parallel in the lower boom (2) top;Top boom (1) length is less than the lower boom (2) length;Institute State and multiple diagonal web members (3) and the perpendicular web member (4) are connected between top boom (1) and the lower boom (2).
7. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:The hydraulic jack (14) cylinder ends are removably connected with the second stress distribution beam group;The hydraulic jack (14) is described second Installation site in stress distribution beam group is adjustable;The tailpiece of the piston rod of the hydraulic jack (14) supports the first stress distribution beam Group.
8. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:First stress point Include upper transverse distribution beam (10) and upper longitudinal distribution beam (11) with beam group;The upper transverse distribution beam (10) is fixed in described vertical The bottom of the lower boom (2) of body truss;Upper longitudinal distribution beam (11) is fixed in the bottom of the upper transverse distribution beam (10).
9. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:Second stress point Include lower transverse distribution beam (12) and lower longitudinal distribution beam (13) with beam group;The lower transverse distribution beam (12) is fixed in the branch Frame upper end;Lower longitudinal distribution beam (13) is fixed in lower transverse distribution beam (12) upper end.
10. a kind of pier support assembled prepressing device high according to claim 1, it is characterised in that:The space truss On be provided with default hanger (6).
CN201621224483.4U 2016-11-14 2016-11-14 A kind of pier support assembled prepressing device high Active CN206219990U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621224483.4U CN206219990U (en) 2016-11-14 2016-11-14 A kind of pier support assembled prepressing device high

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106400694A (en) * 2016-11-14 2017-02-15 中交第二航务工程局有限公司 Fabricated prestressing device and method for high pier scaffoldings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106400694A (en) * 2016-11-14 2017-02-15 中交第二航务工程局有限公司 Fabricated prestressing device and method for high pier scaffoldings
CN106400694B (en) * 2016-11-14 2018-07-03 中交第二航务工程局有限公司 A kind of high pier stent assembled prepressing device and method

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