CN109322241A - Trestle work structure and construction method - Google Patents

Trestle work structure and construction method Download PDF

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Publication number
CN109322241A
CN109322241A CN201811323961.0A CN201811323961A CN109322241A CN 109322241 A CN109322241 A CN 109322241A CN 201811323961 A CN201811323961 A CN 201811323961A CN 109322241 A CN109322241 A CN 109322241A
Authority
CN
China
Prior art keywords
trestle
pier stud
support
pile foundation
along
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
CN201811323961.0A
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Chinese (zh)
Inventor
肖洪波
谭可
杨果林
邱明明
沈臻鑫
朱晓华
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CCFEB Civil Engineering Co Ltd
Original Assignee
CCFEB Civil Engineering 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 CCFEB Civil Engineering Co Ltd filed Critical CCFEB Civil Engineering Co Ltd
Priority to CN201811323961.0A priority Critical patent/CN109322241A/en
Publication of CN109322241A publication Critical patent/CN109322241A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00Movable or portable bridges; Floating bridges
    • E01D15/12Portable or sectional bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00Movable or portable bridges; Floating bridges
    • E01D15/12Portable or sectional bridges
    • E01D15/133Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey 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
    • E01D19/005Piers, trestles, bearings, expansion joints or parapets specially adapted for portable or sectional bridges
    • 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
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/62Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes

Abstract

The invention discloses a kind of trestle work structure and construction methods, including support beam frame, it is equipped with supporting surface plate on support beam frame, the multiple groups pier stud stand for supporting it jointly is supported with below support beam frame, the stand of multiple groups pier stud is successively spaced laying along the length direction of support beam frame.The Conveyor belt as brace foundation is supported with below each pier stud stand, Conveyor belt includes by site operation and being embedded in the trestle pile foundations of more in subterranean strata miniature ground piles buildings, and it is supported on the bearing base station in trestle pile foundation, pier stud stand is supported on the bearing base station being correspondingly arranged.In trestle work structure of the invention, it can be according to practice of construction demand, it adjusts the height of pier stud stand and then adjusts the height of trestle, it can also be by adjusting the laying mode of the more miniature ground piles of supporting width and/or adjustment of pier stud stand and then the supporting width of adjustment trestle pile foundation, it adjusts the length of trestle pile foundation and then meets different stress and deformation requirements, it is applied widely.

Description

Trestle work structure and construction method
Technical field
The present invention relates to Traffic Engineering Construction fields, particularly, are related to a kind of trestle work structure.Moreover, it relates to A kind of construction method of trestle.
Background technique
In traffic engineering construction process, the especially immediately construction of existing road engineering is needing to guarantee existing road just Often operation and safety, building temporary trestle bridge is one of most common method.Existing trestle has the following problems: trestle work structure is multiple It is miscellaneous, cost is high, construction efficiency is low and the scope of application is small.Under conditions of short time limit, construction site are limited, how to solve interim Trestle is quickly, easy, to build in high quality be problem extremely important in Traffic Engineering Construction.In addition, in existing construction, trestle Stiffening basic ground mode include expanding foundation stabilization and grouting and reinforcing ground.When Extended chemotherapy is reinforced, Extended chemotherapy is over the ground Base requirement for bearing capacity is higher, and Extended chemotherapy need to be excavated on a large scale, is not suitable for constructing at precipitous position, thereby increases and it is possible to cause to collapse The subsequent adverse effect such as side, soil erosion;When grouting and reinforcing ground, slip casting effect is difficult to check and verify, and slip casting effect cannot It is effectively ensured.
Summary of the invention
The present invention provides a kind of trestle work structure and construction method, to solve, existing trestle construction efficiency is low, the scope of application Small and trestle form of construction work is not suitable for the technical issues of limited condition in short time limit and construction site.
The technical solution adopted by the invention is as follows:
A kind of trestle work structure, comprising: along the support beam frame of the extending direction erection of trestle, be equipped on support beam frame along it Length direction extends, the support panel for supporting people or vehicle, is supported with for supporting its jointly below support beam frame Multiple groups pier stud stand, the stand of multiple groups pier stud are successively spaced laying along the length direction of support beam frame;The lower section branch of each pier stud stand The Conveyor belt on the basis as trestle support is held, Conveyor belt includes by site operation and being embedded in more in subterranean strata The trestle pile foundation of miniature ground pile building, and the bearing base station being supported in trestle pile foundation, pier stud stand, which is supported on, to be correspondingly arranged It supports on base station.
Further, the pile foundation hole for installing each miniature ground pile is drilled in the bearing stratum for supporting Conveyor belt; Miniature ground pile include be vertically arranged in pile foundation hole and the hollow pipe of top end opening, be vertically arranged in hollow pipe steel reinforcement cage, It is filled in the cement mortar between hollow pipe and pile foundation hole and in hollow pipe.
Further, multiple slurry leakage holes are offered on the side wall of hollow pipe;Miniature ground pile further include be filled in slurry leakage hole, And connect the concrete connecting rod of the concrete layer inside and outside hollow pipe.
Further, bearing base station includes reinforced mesh and pours in the armored concrete on reinforced mesh;Reinforced mesh Including the longitudinal reinforcement laid along trestle length direction, transverse steel, the connection longitudinal reinforcement, cross laid along trestle width direction To the connection reinforcing bar of reinforcing bar, longitudinal reinforcement and transverse steel.
Further, pier stud stand includes more pier studs being vertically arranged, and is connected between adjacent pier stud for enhancing The multiple groups bridging of pier stud stand supporting stabilizer;Multiple groups bridging is successively spaced laying along the short transverse of pier stud.
Further, support beam frame includes the sub-truss laid along the length direction of trestle, along the length of sub-truss Direction be successively spaced more proppings being layed on sub-truss, along sub-truss width direction be successively spaced be layed in it is more More vertical strutbeams on root propping are successively spaced along the width direction of sub-truss and are layed in the more pads on pier stud stand top Beam;Support panel is layed on more vertical strutbeams;Sub-truss is supported on more bearing beams.
According to another aspect of the present invention, a kind of trestle construction method is additionally provided, for such as any of the above-described of constructing out Trestle work structure, trestle construction method the following steps are included: construction along trestle extending direction successively be spaced laying and be embedded in underground Multiple groups trestle pile foundation in rock stratum;Pouring molding supports base station in each group trestle pile foundation;Pier stud is constructed on each bearing base station Stand;In the support that the top of pier stud stand constructs while being supported in more pedestal column stands of the extending direction laying of trestle Roof beam structure;Supporting surface plate is laid on support beam frame.
Further, every trestle pile foundation includes more miniature ground piles being embedded in subterranean strata, and for supporting trestle The pile foundation hole for installing each miniature ground pile is drilled in the bearing stratum on basis;Each miniature ground pile includes being vertically arranged at pile foundation hole In and the hollow pipe of top end opening, be vertically arranged in hollow pipe steel reinforcement cage, be filled between hollow pipe and pile foundation hole and empty Concrete layer in heart pipe.
Further, construction bridge pile foundation in bearing stratum the following steps are included: bore the stake for installing miniature ground pile Datum hole;Prepare hollow pipe and steel reinforcement cage;Successively hollow pipe is lifted in pile foundation hole, enters reinforcing bar cage hoisting in hollow pipe;To Joints cement mortar in pile foundation hole.
Further, support beam frame includes the sub-truss laid along the length direction of trestle, along the length of sub-truss Direction be successively spaced more proppings being layed on sub-truss, along sub-truss width direction be successively spaced be layed in it is more More vertical strutbeams on root propping are successively spaced along the width direction of sub-truss and are layed in the more pads on pier stud stand top Beam;Support panel is layed on more vertical strutbeams;Sub-truss is supported on more bearing beams.
The invention has the following advantages:
Multiple groups pier stud stand, the lower section of each pier stud stand are supported in trestle work structure of the invention, below support beam frame It is supported with Conveyor belt, and Conveyor belt includes the trestle pile foundation constructed by more miniature ground piles and is supported in trestle pile foundation Base station is supported, so as to the height of pier stud stand be adjusted and then adjust the height of trestle, can also pass through according to practice of construction demand The bearing for adjusting the supporting width of pier stud stand and/or adjusting the laying mode and then adjustment trestle pile foundation of more miniature ground piles is wide Degree adjusts the length of trestle pile foundation and then meets different stress and deformation requirements, applied widely;Pass through compared to the prior art The mode of Extended chemotherapy consolidated subsoil or grouting and reinforcing ground in trestle work structure of the invention, passes through the stand of multiple groups pier stud first Common bearing support beam frame, then supports one group of Conveyor belt below each pier stud stand, and every group of Conveyor belt includes scene Moulding by casting and more miniature ground piles being embedded in subterranean strata, small-sized machine construction can be used in miniature ground pile, thus construction party Just, speed of application is fast, and miniature ground pile passes to upper support base station stress outside the solid rock stratum in lower part, cast-in-place shaping Miniature ground pile can also the soil body to stake week or fragmented rock consolidate, increase the bearing capacity of Conveyor belt, and except bearing Outside base station, part is excavated without increasing, so that effect on environment is small;
When using trestle construction method construction bridge structure of the invention, due to trestle pile foundation site operation, bearing base station Cast-in-place shaping, the construction of pier stud stand construction on site, the preparation of support beam frame construction on site and support panel scene are laid with, thus Keep trestle work structure prefabricated and splicing structure, not only save material, it is convenient to construct, and whole construction operations can be assembled at the scene, be poured Injection forming, so that labour is greatly reduced, it is apparent using having in the high engineering of complex geological condition and construction period Advantage, while the range of engineer application has also been enlarged, economic benefit, construction efficiency and application value are significant, in addition, trestle knot Structure is prefabricated and splicing structure, and structural bearing performance is strong, overall stability is good;It is constructed out using trestle construction method of the invention Trestle work structure be supported with trestle base below each pier stud stand due to being supported with multiple groups pier stud stand below support beam frame Plinth, and Conveyor belt includes the trestle pile foundation by more miniature ground piles buildings and the bearing base station that is supported in trestle pile foundation, from And the height of pier stud stand according to practice of construction demand, can be adjusted and then adjust the height of trestle, it can also be vertical by adjusting pier stud The supporting width of frame and/or the laying mode for adjusting more miniature ground piles adjust the supporting width of trestle pile foundation in turn, adjust stack The length of bridge pier base meets different stress and deformation requirements in turn, applied widely.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention. Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the diagrammatic cross-section of the trestle work structure of the preferred embodiment of the present invention;
Fig. 2 is the enlarged structure schematic diagram of Conveyor belt in Fig. 1;
Fig. 3 is the plan view of trestle pile foundation in Fig. 1;
Fig. 4 is the schematic cross section of miniature ground pile in Fig. 1;
Fig. 5 is the structural schematic diagram of hollow pipe in Fig. 1.
Marginal data
10, support beam frame;11, sub-truss;12, propping;13, strutbeam is indulged;14, bearing beam;20, panel is supported;30, pier Column stand;31, pier stud;32, bridging;40, Conveyor belt;41, miniature ground pile;411, hollow pipe;4110, slurry leakage hole;412, Steel reinforcement cage;413, cement mortar;414, concrete connecting rod;42, base station is supported;421, reinforced mesh;422, armored concrete; 50, pile foundation hole.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims Implement with the multitude of different ways of covering.
Referring to Fig.1, the preferred embodiment of the present invention provides a kind of trestle work structure, comprising: along the extending direction frame of trestle If support beam frame 10, be equipped on support beam frame 10 extend along its length, the support panel for supporting people or vehicle 20, the lower section of support beam frame 10 is supported with the multiple groups pier stud stand 30 for supporting it jointly, and the stand 30 of multiple groups pier stud is along support The length direction of roof beam structure 10 is successively spaced laying.The lower section of each pier stud stand 30 is supported with the trestle on the basis as trestle support Basis 40, Conveyor belt 40 include by site operation and being embedded in the trestle stake that more in subterranean strata miniature ground piles 41 construct Base, and the bearing base station 42 being supported in trestle pile foundation, pier stud stand 30 are supported on the bearing base station 42 being correspondingly arranged.
In trestle work structure of the invention, the lower section of support beam frame 10 is supported with multiple groups pier stud stand 30, each pier stud stand 30 Lower section be supported with Conveyor belt 40, and Conveyor belt 40 includes the trestle pile foundation constructed by more miniature ground piles 41 and is supported on Bearing base station 42 in trestle pile foundation, so as to adjust the height of pier stud stand and then adjust trestle according to practice of construction demand Height, can also by adjusting pier stud stand supporting width and/or adjust more miniature ground piles laying mode so that adjust The supporting width of trestle pile foundation adjusts the length of trestle pile foundation and then meets different stress and deformation requirements, applied widely;Phase Than in the prior art by way of Extended chemotherapy consolidated subsoil or grouting and reinforcing ground, in trestle work structure of the invention, first Support beam frame 10 is supported jointly by multiple groups pier stud stand 30, and one group of Conveyor belt is then supported below each pier stud stand 30 40, and every group of Conveyor belt 40 includes cast-in-place shaping and is embedded in more in subterranean strata miniature ground piles 41, miniature ground pile 41 can be used small-sized machine construction, thus it is easy for construction, speed of application is fast, miniature ground pile 41 by 42 stress of upper support base station pass Pass outside the solid rock stratum in lower part, the miniature ground pile 41 of cast-in-place shaping can also the soil body to stake week or fragmented rock carry out Consolidation increases the bearing capacity of Conveyor belt 40, and in addition to supporting base station 42, part is excavated without increasing, thus to environment shadow Sound is small.
Optionally, miniature 41 cast-in-place shaping of ground pile directly pours in trestle pile foundation after trestle pile foundation moulding by casting Injection forming supports base station 42, and both trestle pile foundation and bearing base station 42 are spliced by pouring type;Pier stud stand 30 passes through pre-buried Built-in fitting and bearing base station 42 in bearing base station 42 splice;Support beam frame 10 welds phase by connecting plate and pier stud stand 30 Even;Support panel 20 is layed on support beam frame 10 and is connected by welding manner with support beam frame 10.To stack of the invention Bridge structure is prefabricated and splicing structure, not only saves material, and it is convenient to construct, and whole construction operations can be assembled at the scene, be poured into Type, to greatly reduce labour, applying in the high engineering of complex geological condition and construction period has apparent advantage, The range of engineer application has also been enlarged simultaneously, economic benefit, construction efficiency and application value are significant, in addition, trestle work structure is Prefabricated and splicing structure, structural bearing performance is strong, overall stability is good.
Specifically, as shown in Figure 1, support beam frame 10 is the hollow cylindrical knot assembled along trestle extending direction by fashioned iron Structure;Pier stud stand 30 is the hollow cylindrical structure assembled by the fashioned iron of the steel pipe and joint steel pipe laid vertically;Support base Platform 42 is the mesa-shaped structure of the steel mesh constructed by reinforcing bar He the concrete formation being cast on steel mesh;Miniature ground pile 41 is served as reasons The stake shape knot of the steel pipe laid vertically, the steel reinforcement cage being laid in steel pipe and the concrete formation being cast on steel pipe and steel reinforcement cage Structure not only saves material so that trestle work structure is prefabricated and splicing structure, and it is convenient to construct, and whole construction operations can group at the scene Dress, moulding by casting, so that labour is greatly reduced, it is bright using having in the high engineering of complex geological condition and construction period Aobvious advantage, while the range of engineer application has also been enlarged, economic benefit, construction efficiency and application value are significant, in addition, stack Bridge structure is prefabricated and splicing structure, and structural bearing performance is strong, overall stability is good.
Optionally, more miniature ground piles 41 for constructing trestle pile foundation are vertically arranged and in regular arrays.Specifically, as schemed Shown in 3, more miniature ground piles 41 are laid in trellis.More miniature ground piles 41 are in regular array, convenient for uniform to bearing base station 42 Support, and then enhance the stability of strutting system of Conveyor belt entirety, also make every miniature 41 uniform force of ground pile, force-bearing situation phase Together, the stability of enhancing trestle pile foundation bearing;In addition, more miniature ground piles 41 are in regular array, it can also be according to practice of construction need The supporting width for facilitating adjustment trestle pile foundation, meets construction requirement.
Optionally, it is drilled in the bearing stratum of Conveyor belt 40 for installing each miniature ground pile as shown in figure 4, being used to support 41 pile foundation hole 50.Miniature ground pile 41 includes being vertically arranged in pile foundation hole 50 and the hollow pipe 411 of top end opening, being vertically arranged Steel reinforcement cage 412 in hollow pipe 411 is filled in cement mortar between hollow pipe 411 and pile foundation hole 50 and in hollow pipe 411 413.Since miniature ground pile 41 includes hollow pipe 411 and steel reinforcement cage 412, so that 41 bearing strength of miniature ground pile is high, anti-shearing energy Power is strong;Cement mortar 413 is filled between hollow pipe 411 and pile foundation hole 50 and in hollow pipe 411 again, to further enhance micro- The bearing strength and anti-shear ability of type ground pile 41, at the same also enhance the bonding strength between miniature ground pile 41 and surrounding formation and Connective stability, and then further increase the stability that trestle pile foundation integrally supports.
Preferably, as shown in figure 4, offering multiple slurry leakage holes 4110 on the side wall of hollow pipe 411.Miniature ground pile 41 also wraps Include the concrete connecting rod 414 for being filled in slurry leakage hole 4110 and connecting the cement mortar 413 inside and outside hollow pipe 411.Pass through Slurry leakage hole 4110 is opened up on hollow pipe 411, consequently facilitating the concrete connecting rod 414 being filled in slurry leakage hole 4110 connect it is hollow Cement mortar 413 inside and outside pipe 411, and then further improve the bearing strength and anti-shear ability of miniature ground pile 41.
Preferably, as shown in figure 4, the outer diameter of hollow pipe 411 is less than the internal diameter of pile foundation hole 50.The outer diameter of steel reinforcement cage 412 is small In the internal diameter of hollow pipe 411.Convenient for concrete layer between pile foundation hole 50 and hollow pipe 411, hollow pipe 411 and steel reinforcement cage 412 Between formed, and then further enhance the bearing strength and anti-shear ability of miniature ground pile 41.
When practice of construction, the stake diameter of miniature ground pile 41 chooses 10cm~20cm (preferably 14.6cm) hollow steel pipe, wall thickness 5mm ~10mm, 41 spacing 80cm of miniature ground pile, 41 a length of 6m~20m of miniature ground pile, miniature ground pile 41 can be by equilateral triangle Or square lays out pile, horizontal layout is as shown in Figure 3.Pile foundation hole 50 is applied using boring method when construction, 50 aperture of pile foundation hole is answered Greater than 411 aperture of hollow pipe.It is bored on hollow pipe 411 and beats slurry leakage hole 4110,4110 aperture 0.8cm~1.5cm of slurry leakage hole, pitch-row About 15cm.411 overall length of hollow pipe, which can be divided into not drilling, only starches section, bored grouting section and conehead section, as shown in Figure 5.Hollow pipe 411 Overlapping part uses sleeve overlap welding, and sleeve height is not less than 2 times of hollow pipe diameter, and sleeve wall thickness is not less than thickness of steel pipe, Perimeter of sleeve welding, welding are answered full.Hollow pipe 411 pay attention to when plugging into check verticality, prevent connector it is curved, folding.
Optionally, as shown in Fig. 2, bearing base station 42 includes reinforced mesh 421 and pours in the coagulation on reinforced mesh 421 Soil 422.Reinforced mesh 421 includes the longitudinal reinforcement laid along trestle length direction, the lateral steel laid along trestle width direction Muscle, the connection reinforcing bar for connecting longitudinal reinforcement, transverse steel, longitudinal reinforcement and transverse steel.Reinforcing bar is laid in bearing base station 42 Mesh sheet 421, so as to enhance bearing base station 42 whole bearing strength and rigidity.
Optionally, as shown in Figure 1, pier stud stand 30 includes more pier studs 31 being vertically arranged, and it is connected to adjacent pier stud For enhancing the multiple groups bridging 32 of 30 supporting stabilizer of pier stud stand between 31.Multiple groups bridging 32 is along the height side of pier stud 31 It is laid to successively interval.Specifically, each group bridging 32 include two crossbeams being oppositely arranged up and down and two respectively with two The diagonally connected cant beam of crossbeam, the both ends of crossbeam are welded and fixed with adjacent two pier studs 31 respectively, every end of cant beam respectively with The crossbeam and pier stud 31 being correspondingly arranged are welded and fixed.When practice of construction, pier stud 31 uses model φ 630mm × 8mm steel pipe, pier Column 31 guarantees its stability by the welding connection of 16# channel steel bridging 32 between each other.Pier stud 31 and bearing base station 42 pass through pre- Embedded part is connected firmly.
Optionally, as shown in Figure 1, support beam frame 10 includes the sub-truss 11 laid along the length direction of trestle, along branch The length direction of support truss 11 is successively spaced more proppings 12 being layed on sub-truss 11, along the width of sub-truss 11 Direction is successively spaced the vertical strutbeam 13 of more be layed on more proppings 12, is successively spaced along the width direction of sub-truss 11 It is layed in the more bearing beams 14 on 30 top of pier stud stand.Support panel 20 is layed on more vertical strutbeams 13.Sub-truss 11 It holds on more bearing beams 14.
When practice of construction, bearing beam 14 is I40b Two bors d's oeuveres I-steel bearing beam, the Two bors d's oeuveres I-steel crane that will be welded in advance It hangs on the top of pier stud stand 30, and carries out welded connecting fixation in I-steel two sides 8# channel steel and 30 capital of pier stud stand.Branch Support truss 11 is Bailey truss, and Bailey truss is prefabricated components, carries out assembly at the scene, is sling beret slice piecewise with crane, It is connected with each other spreading with truss pin, all bolt nuts of truss frame for connecting must tighten, and truss pin is through must insert behind position Good safety plug after Bailey truss assembly is good, is sling with crane and is placed on bearing beam 14.Bailey truss and Two bors d's oeuveres I-steel bearing beam it Between connected with the U-shaped buckle that 8# channel steel is made into and U-shaped buckle be welded and fixed with the two being connected respectively, Bailey truss group with It is connected between Bailey truss group with the bridging that 8# channel steel is made into, to enhance the integrally-built stabilization of support beam frame 10 Property.
When practice of construction, propping 12 uses I25a fashioned iron, and spacing is 0.75m, each propping between adjacent propping 12 12 laterally lay along trestle, and using the connection of gate-type card is inverted between propping 12 and Bailey truss, gate-type card is welded on propping On 12, and fixed after being connected with Bailey truss with Bailey truss, and propping 12 and each contact point of Bailey truss beam use Gate-type card is connected and is welded and fixed, and the web of gate-type card and propping 12 is welded to guarantee fusion length, and ensures to weld Quality.Vertical strutbeam 13 uses I14 fashioned iron, spacing 0.30m between adjacent vertical strutbeam 13, while using spot welding with the junction I25a.
Optionally, support panel 20 includes the rigid panel of muti-piece that laying is successively spaced along the length direction of support beam frame 10. The connection panel being respectively connected with the two is connected between adjacent two pieces rigid panels.Adjacent two pieces rigid panel intervals are laid, can be pre- The space for staying rigid panel to expand with heat and contract with cold prevents support panel 20 from deforming.When practice of construction, rigid panel uses 12mm thickness riffled iron Plate, the wide 6m of plate are welded on vertical strutbeam 13.It is welded after being adjacent between steel facing and vertical strutbeam 13 using interruption, while every piece of rigid face The gap 2cm is stayed between plate.
Referring to Fig.1, the preferred embodiment of the present invention additionally provides a kind of trestle construction method, for constructing out such as above-mentioned One trestle work structure, trestle construction method the following steps are included:
Construction is successively spaced the multiple groups trestle pile foundation laid and be embedded in subterranean strata along trestle extending direction.
Pouring molding supports base station 42 in each group trestle pile foundation.
Pier stud stand 30 is constructed on each bearing base station 42.
It is constructed on the top of pier stud stand 30 while being supported on more pedestal column stands 30 of the extending direction laying along trestle On support beam frame 10.
Supporting surface plate 20 is laid on support beam frame 10.
When using trestle construction method construction bridge structure of the invention, due to the preparation of trestle pile foundation site operation, bearing 42 cast-in-place shaping of base station, the preparation of 30 construction on site of pier stud stand, the preparation of 10 construction on site of support beam frame and support panel 20 Scene is laid with, to keep trestle work structure prefabricated and splicing structure, not only saves material, it is convenient to construct, and whole construction operations can Assembling, moulding by casting are answered in the high engineering of complex geological condition and construction period to greatly reduce labour at the scene With with apparent advantage, while the range of engineer application has also been enlarged, economic benefit, construction efficiency and application value are aobvious It writes, in addition, trestle work structure is prefabricated and splicing structure, structural bearing performance is strong, overall stability is good;Using trestle of the invention The trestle work structure that construction method is constructed out, since the lower section of support beam frame 10 is supported with multiple groups pier stud stand 30, each pier stud stand 30 lower section is supported with Conveyor belt 40, and Conveyor belt 40 includes the trestle pile foundation and bearing constructed by more miniature ground piles 41 In the bearing base station 42 in trestle pile foundation, so as to adjust the height of pier stud stand and then adjust stack according to practice of construction demand The height of bridge, can also be by adjusting the laying mode and then tune of the more miniature ground piles of supporting width and/or adjustment of pier stud stand The supporting width of whole trestle pile foundation adjusts the length of trestle pile foundation and then meets different stress and deformation requirements, applied widely; It is first in trestle work structure of the invention compared to the prior art by way of Extended chemotherapy consolidated subsoil or grouting and reinforcing ground The bearing support beam frame 10 jointly of multiple groups pier stud stand 30 is first passed through, one group of Conveyor belt is then supported below each pier stud stand 30 40, and every group of Conveyor belt 40 includes cast-in-place shaping and is embedded in more in subterranean strata miniature ground piles 41, miniature ground pile 41 can be used small-sized machine construction, thus it is easy for construction, speed of application is fast, miniature ground pile 41 by 42 stress of upper support base station pass Pass outside the solid rock stratum in lower part, the miniature ground pile 41 of cast-in-place shaping can also the soil body to stake week or fragmented rock carry out Consolidation increases the bearing capacity of Conveyor belt 40, and in addition to supporting base station 42, part is excavated without increasing, thus to environment shadow Sound is small.
Optionally, as shown in Figure 1 and Figure 4, every trestle pile foundation includes more miniature ground piles 41 being embedded in subterranean strata, And the pile foundation hole 50 for installing each miniature ground pile 41 is drilled in the bearing stratum for supporting Conveyor belt 40.Each miniature ground pile 41 include being vertically arranged in pile foundation hole 50 and the hollow pipe 411 of top end opening, the steel reinforcement cage that is vertically arranged in hollow pipe 411 412, it is filled in the cement mortar 413 between hollow pipe 411 and pile foundation hole 50 and in hollow pipe 411.Further, hollow pipe Multiple slurry leakage holes 4110 are offered on 411 side wall.Miniature ground pile 41 further includes being filled in slurry leakage hole 4110 and connecting hollow The concrete connecting rod 414 of cement mortar 413 inside and outside pipe 411.
Optionally, construction bridge pile foundation the following steps are included:
The pile foundation hole 50 for installing miniature ground pile 41 is bored in bearing stratum.
Prepare hollow pipe 411 and steel reinforcement cage 412.
Successively hollow pipe 411 is lifted in pile foundation hole 50, lifts steel reinforcement cage 412 in hollow pipe 411.
The joints cement mortar into pile foundation hole 50.
When practice of construction, the stake diameter of miniature ground pile 41 chooses 10cm~20cm (preferably 14.6cm) hollow steel pipe, wall thickness 5mm ~10mm, spacing 80cm between adjacent miniature ground pile 41,41 a length of 6m~20m of miniature ground pile, miniature ground pile 41 can be by equilateral Triangle or square lay out pile, and horizontal layout is as shown in Figure 3.Pile foundation hole 50, pile foundation hole 50 are applied using boring method when construction Aperture should be greater than 411 aperture of hollow pipe.It is bored on hollow pipe 411 and beats slurry leakage hole 4110,4110 aperture 0.8cm of slurry leakage hole~ 1.5cm, pitch-row about 15cm.After hollow pipe 411 lifts in pile foundation hole 50, steel reinforcement cage 412 lifts in hollow pipe 411, adopt It is filled with M30 slip casting mortar, grouting pressure can use 0.3MPa~0.5MPa;After slurry is overflow on 411 top of hollow pipe, pile foundation hole is closed 50 pressurization a period of times, mortar stop infusing after overflowing again.411 overall length of hollow pipe, which can be divided into not drilling, only starches section, bored grouting section With conehead section, as shown in Figure 5.411 overlapping part of hollow pipe uses sleeve overlap welding, and sleeve height is not less than hollow pipe diameter 2 Times, sleeve wall thickness is not less than thickness of steel pipe, welds in perimeter of sleeve, welding is answered full.Hollow pipe 411, which pays attention to checking when plugging into, to hang down Straight degree, prevents that connector is curved, folding.
Optionally, as shown in Figure 1, support beam frame 10 includes the sub-truss 11 laid along the length direction of trestle, along branch The length direction of support truss 11 is successively spaced more proppings 12 being layed on sub-truss 11, along the width of sub-truss 11 Direction is successively spaced the vertical strutbeam 13 of more be layed on more proppings 12, is successively spaced along the width direction of sub-truss 11 It is layed in the more bearing beams 14 on 30 top of pier stud stand.Support panel 20 is layed on more vertical strutbeams 13.Sub-truss 11 It holds on more bearing beams 14.
Optionally, Construction Support roof beam structure 10 the following steps are included:
Bearing beam 14, sub-truss 11, propping 12 and vertical strutbeam 13 is prepared in situ.
By the installation of bearing beam 14 to the top of pier stud stand 30.
It will be in the installation to bearing beam 14 of sub-truss 11.
It will be in the installation to sub-truss 11 of propping 12.
It will be in the installation to propping 12 of vertical strutbeam 13.
When practice of construction, bearing beam 14 is I40b Two bors d's oeuveres I-steel bearing beam, the Two bors d's oeuveres I-steel crane that will be welded in advance It hangs on the top of pier stud stand 30, and carries out welded connecting fixation in I-steel two sides 8# channel steel and 30 capital of pier stud stand.Branch Support truss 11 is Bailey truss, and Bailey truss is prefabricated components, carries out assembly at the scene, is sling beret slice piecewise with crane, It is connected with each other spreading with truss pin, all bolt nuts of truss frame for connecting must tighten, and truss pin is through must insert behind position Good safety plug after Bailey truss assembly is good, is sling with crane and is placed on bearing beam 14.Bailey truss and Two bors d's oeuveres I-steel bearing beam it Between connected with the U-shaped buckle that 8# channel steel is made into and U-shaped buckle be welded and fixed with the two being connected respectively, Bailey truss group with It is connected between Bailey truss group with the bridging that 8# channel steel is made into, to enhance the integrally-built stabilization of support beam frame 10 Property.
When practice of construction, propping 12 uses I25a fashioned iron, and spacing is 0.75m, each propping between adjacent propping 12 12 laterally lay along trestle, and using the connection of gate-type card is inverted between propping 12 and Bailey truss, gate-type card is welded on propping On 12, and fixed after being connected with Bailey truss with Bailey truss, and propping 12 and each contact point of Bailey truss beam use Gate-type card is connected and is welded and fixed, and the web of gate-type card and propping 12 is welded to guarantee fusion length, and ensures to weld Quality.Vertical strutbeam 13 uses I14 fashioned iron, spacing 0.30m between adjacent vertical strutbeam 13, while using spot welding with the junction I25a.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of trestle work structure characterized by comprising
Along the support beam frame (10) of the extending direction erection of trestle, it is equipped on the support beam frame (10) and prolongs along its length It stretches, the support panel (20) for supporting people or vehicle, is supported with below the support beam frame (10) for supporting it jointly Multiple groups pier stud stand (30), pier stud stand (30) described in multiple groups is successively spaced cloth along the length direction of the support beam frame (10) If;
The Conveyor belt (40) on the basis as trestle support, the stack are supported with below each pier stud stand (30) Bridge Foundation (40) includes by site operation and being embedded in the trestle pile foundations of more in subterranean strata miniature ground piles (41) buildings, and branch It holds in the bearing base station (42) in the trestle pile foundation, the pier stud stand (30) is supported on the bearing base station being correspondingly arranged (42) on.
2. trestle work structure according to claim 1, which is characterized in that
The pile foundation for installing each miniature ground pile (41) is drilled in bearing stratum for supporting the Conveyor belt (40) Hole (50);
The miniature ground pile (41) includes being vertically arranged in the pile foundation hole (50) and the hollow pipe (411) of top end opening, perpendicular The steel reinforcement cage (412) that is directly set in the hollow pipe (411) is filled in the hollow pipe (411) and the pile foundation hole (50) Between and the hollow pipe (411) in cement mortar (413).
3. trestle work structure according to claim 2, which is characterized in that
Multiple slurry leakage holes (4110) are offered on the side wall of the hollow pipe (411);
The miniature ground pile (41) further includes being filled in the slurry leakage hole (4110) and connecting inside and outside the hollow pipe (411) The concrete connecting rod (414) of the concrete layer (413) of two sides.
4. trestle work structure according to claim 1, which is characterized in that
Bearing base station (42) includes reinforced mesh (421) and pours in the concrete on the reinforced mesh (421) (422);
The reinforced mesh (421) includes the longitudinal reinforcement laid along the trestle length direction, along the trestle width direction The connection of the transverse steel, the connection longitudinal reinforcement, the transverse steel, the longitudinal reinforcement and the transverse steel of laying Reinforcing bar.
5. trestle work structure according to claim 1, which is characterized in that
The pier stud stand (30) includes more pier studs (31) being vertically arranged, and is connected between the adjacent pier stud (31) and uses In the multiple groups bridging (32) for enhancing pier stud stand (30) supporting stabilizer;
Bridging described in multiple groups (32) is successively spaced laying along the short transverse of the pier stud (31).
6. trestle work structure according to claim 1, which is characterized in that
The support beam frame (10) includes the sub-truss (11) laid along the length direction of the trestle, along the sub-truss (11) length direction is successively spaced more proppings (12) being layed on the sub-truss (11), along the sub-truss (11) width direction is successively spaced more vertical strutbeams (13) being layed on the more proppings (12), along the support purlin The width direction of frame (11) is successively spaced more bearing beams (14) for being layed in pier stud stand (30) top;
The support panel (20) is layed on the more vertical strutbeams (13);
The sub-truss (11) is supported on the more bearing beams (14).
7. a kind of trestle construction method, which is characterized in that for trestle knot described in any one of claims 1 to 6 of constructing out Structure, the trestle construction method the following steps are included:
Construction is successively spaced the multiple groups trestle pile foundation (41) laid and be embedded in subterranean strata along trestle extending direction;
Pouring molding bearing base station (42) in the trestle pile foundation described in each group;
Pier stud stand (30) are constructed on each bearing base station (42);
In the building of the top of the pier stud stand (30) while being supported on along described in more of the extending direction laying of the trestle Support beam frame (10) in pier stud stand (30);
Supporting surface plate (20) are laid on the support beam frame (10).
8. trestle construction method according to claim 7, which is characterized in that
Every trestle pile foundation includes more miniature ground piles (41) being embedded in subterranean strata, and for supporting Conveyor belt (40) pile foundation hole (50) for installing each miniature ground pile (41) is drilled in bearing stratum;
Each miniature ground pile (41) include be vertically arranged in the pile foundation hole (50) and the hollow pipe (411) of top end opening, The steel reinforcement cage (412) that is vertically arranged in the hollow pipe (411) is filled in the hollow pipe (411) and the pile foundation hole (50) concrete layer (413) between and in the hollow pipe (411).
9. trestle construction method according to claim 8, which is characterized in that the trestle pile foundation of constructing includes following step It is rapid:
The pile foundation hole (50) for installing the miniature ground pile (41) is bored in the bearing stratum;
Prepare the hollow pipe (411) and the steel reinforcement cage (412);
Successively the hollow pipe (411) is lifted in the pile foundation hole (50), lifts the steel reinforcement cage (412) into the sky In heart pipe (411);
To the interior joints cement mortar of the pile foundation hole (50).
10. trestle construction method according to claim 7, which is characterized in that
The support beam frame (10) includes the sub-truss (11) laid along the length direction of the trestle, along the sub-truss (11) length direction is successively spaced more proppings (12) being layed on the sub-truss (11), along the sub-truss (11) width direction is successively spaced more vertical strutbeams (13) being layed on the more proppings (12), along the support purlin The width direction of frame (11) is successively spaced more bearing beams (14) for being layed in pier stud stand (30) top;
The support panel (20) is layed on the more vertical strutbeams (13);
The sub-truss (11) is supported on the more bearing beams (14).
CN201811323961.0A 2018-11-08 2018-11-08 Trestle work structure and construction method Pending CN109322241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811323961.0A CN109322241A (en) 2018-11-08 2018-11-08 Trestle work structure and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811323961.0A CN109322241A (en) 2018-11-08 2018-11-08 Trestle work structure and construction method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110700248A (en) * 2019-11-01 2020-01-17 河北工业大学 Miniature steel pipe pile for grouting small and medium-sized span bridge, pile foundation and construction method
CN110790116A (en) * 2019-12-02 2020-02-14 清华大学 Coal mine vertical shaft lifting system and derrick thereof
CN111893991A (en) * 2020-07-04 2020-11-06 山东省水电设备厂 Cast-in-place pile foundation decontamination system based on rotary tooth rake type decontamination machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110700248A (en) * 2019-11-01 2020-01-17 河北工业大学 Miniature steel pipe pile for grouting small and medium-sized span bridge, pile foundation and construction method
CN110790116A (en) * 2019-12-02 2020-02-14 清华大学 Coal mine vertical shaft lifting system and derrick thereof
CN110790116B (en) * 2019-12-02 2020-12-22 清华大学 Coal mine vertical shaft lifting system and derrick thereof
CN111893991A (en) * 2020-07-04 2020-11-06 山东省水电设备厂 Cast-in-place pile foundation decontamination system based on rotary tooth rake type decontamination machine

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