CN108797323A - A kind of steel trestle suitable for hardpan - Google Patents

A kind of steel trestle suitable for hardpan Download PDF

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Publication number
CN108797323A
CN108797323A CN201810975499.6A CN201810975499A CN108797323A CN 108797323 A CN108797323 A CN 108797323A CN 201810975499 A CN201810975499 A CN 201810975499A CN 108797323 A CN108797323 A CN 108797323A
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CN
China
Prior art keywords
steel
steel pipe
hardpan
pipe
beam body
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Granted
Application number
CN201810975499.6A
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Chinese (zh)
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CN108797323B (en
Inventor
周杰
李臣
杨闯
张洪亮
刘燕
邓霄
端木惠蓉
吴静
戢鳅喻
边宗银
陈东川
漆涛
何煜民
谢全鸿
袁林林
范觉晓
陈星旭
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China Construction First Group Corp Ltd
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China Construction First Group Corp Ltd
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Priority to CN201810975499.6A priority Critical patent/CN108797323B/en
Publication of CN108797323A publication Critical patent/CN108797323A/en
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Publication of CN108797323B publication Critical patent/CN108797323B/en
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Classifications

    • 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
    • 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
    • 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
    • E02D7/00Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18Placing by vibrating
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0007Production methods using a mold
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0023Cast, i.e. in situ or in a mold or other formwork

Abstract

The present invention relates to the realm of building construction, more particularly to a kind of steel trestle suitable for hardpan, including several steel-pipe piles and the beam body being arranged on the steel-pipe pile, when Design of Steel-tube Piles position is hardpan, when steel pipe is difficult to be inserted into projected depth, using hardpan steel-pipe pile, the hardpan steel-pipe pile, including at least two steel pipes, the steel pipe bottom is abutted against with hardpan, it is provided with drilling on the corresponding hardpan in the steel duct space, it is perfused with concrete in the drilling, the concreting continues to upwardly extend after expiring the drilling, the which part that the concrete forms cylinder is set to be located in the steel pipe.The steel trestle of the application, using above-mentioned hardpan steel-pipe pile so that it is reliable and stable to be formed by steel-pipe pile, and has significantly simplified working procedure, reduces construction cost.

Description

A kind of steel trestle suitable for hardpan
Technical field
The present invention relates to the realm of building construction, more particularly to a kind of steel trestle suitable for hardpan.
Background technology
In construction engineering technical field, when being related to across the river engineering of cross a river, if river does not allow large vessel carrier equipment It marches into the arena or marches into the arena as auxiliary construction equipment, it usually needs auxiliary construction channel is set on river, construction is ensured with this It is smoothed out.
Current auxiliary construction channel generally includes pontoon bridge, steel trestle and manually builds island etc., is directed to and different actually applies Work situation carries out the selection of corresponding construction, for example, it is more rapid for flow, it should not select and manually build island and pontoon structure conduct The river in auxiliary construction channel, steel trestle structure just become relatively conventional selection.
For current steel trestle structure, mainly including pier stake and the beam body being arranged in pier stake, beam body is usual It is spliced using several beret slices, and pier stake is typically to need steel-pipe pile squeezing into soil property in construction using steel-pipe pile Layer, the length that steel-pipe pile enters soil layer have to reach design length, but are sand below steel-pipe pile in practice of construction When the hardpans such as boulder bed, steel-pipe pile is difficult to continue to squeeze into, and causes steel-pipe pile insertion depth inadequate, in order to ensure steel-pipe pile branch The reliability of support, current usual way is first to be arranged in the periphery of Design of Steel-tube Piles position, then with the steel pipe being relatively large in diameter It drills on sand pebble layer in steel pipe, then the casting concrete in drilling, steel-pipe pile is inserted into coagulation before concrete initial set In soil, although such steel tube pile structure also can be consolidated more, it needs first to be arranged compared with large steel pipe, then in larger steel Drilled in pipe, casting concrete and be inserted into steel-pipe pile operation, such mode, on the one hand be installation and remove apply Work process is various, is added significantly to construction cost and duration, also, since the insertion of steel-pipe pile is carried out in large steel pipe, steel Pile pile bottom is inserted into contraposition and is difficult to accurately ensure, so being difficult to control the construction precision of steel-pipe pile;In another aspect, at the beginning of concrete Steel-pipe pile is inserted into before solidifying, the insertion depth of steel-pipe pile is more difficult to control, is susceptible to and is inserted into the problems such as too deep.
So needing to design one kind at present suitable for hardpans such as sand pebble layers, and facilitate guarantee construction quality, drops The steel trestle structure of low construction cost.
Invention content
It is an object of the invention to:For in current steel trestle structure, the existing above problem, providing one kind can either can By supporting beam body, and the steel trestle structure of adjustment beam body bearing height can be facilitated.
To achieve the goals above, the technical solution adopted by the present invention is:
A kind of hardpan steel-pipe pile, including at least two steel pipes, the steel pipe bottom are abutted against with hardpan, the steel pipe It is provided with drilling on the corresponding hardpan in inner space, concrete is perfused in the drilling, institute is expired in the concreting Continue to upwardly extend after stating drilling, the which part that the concrete forms cylinder is made to be located in the steel pipe.
For current steel trestle structure, mainly including pier stake and the beam body being arranged in pier stake, beam body is usual It is spliced using several beret slices, and pier stake is typically to need steel-pipe pile squeezing into soil property in construction using steel-pipe pile Layer, the length that steel-pipe pile enters soil layer have to reach design length, but are sand below steel-pipe pile in practice of construction When the hardpans such as boulder bed, steel-pipe pile is difficult to continue to squeeze into, and causes steel-pipe pile insertion depth inadequate, in order to ensure steel-pipe pile branch The reliability of support, current usual way is first to be arranged in the periphery of Design of Steel-tube Piles position, then with the steel pipe being relatively large in diameter It drills on sand pebble layer in steel pipe, then the casting concrete in drilling, steel-pipe pile is inserted into coagulation before concrete initial set In soil, although such steel tube pile structure also can be consolidated more, it needs first to be arranged compared with large steel pipe, then in larger steel Drilled in pipe, casting concrete and be inserted into steel-pipe pile operation, such mode, on the one hand be installation and remove apply Work process is various, is added significantly to construction cost and duration, also, since the insertion of steel-pipe pile is carried out in large steel pipe, steel Pile pile bottom is inserted into contraposition and is difficult to accurately ensure, so being difficult to control the construction precision of steel-pipe pile;In another aspect, at the beginning of concrete Steel-pipe pile is inserted into before solidifying, the insertion depth of steel-pipe pile is more difficult to control, is susceptible to and is inserted into the problems such as too deep.
So the hardpan steel-pipe pile of the application, when construction, when steel pipe sink down into hardpan can not further under When heavy, stretched into and is drilled by drilling machine, then the concrete perfusion in drilling, behind filling concrete fully-jewelled hole, continue to be perfused, So that the concrete column part that hardening is formed is located in drilling, a part is located in steel pipe, consolidates to steel pipe in this way, realizing Fixed, for traditional approach, form of construction work is simple, has not only significantly simplified working procedure, but also can be deep by drilling Degree and steel pipe inner concrete height come to steel-pipe pile structural strength and stability carry out coordination control, convenient for ensure steel-pipe pile Stability and reliability.
Preferably, the steel pipe lower end is embedded in the hardpan, makes lower end and the end portion of the steel pipe Lateral wall fits with the hardpan.This kind of mode makes in steel pipe end portion insertion hardpan, steel pipe end portion Hardpan in step-like so that hardpan also acts as good support action, a side to steel pipe lower end and peripheral sidewall Face is the structural strength and stability for further improving steel-pipe pile, on the other hand, the effect of positioning steel tube is also acted as, rear In continuous construction, steel pipe is avoided to shift.So the construction quality of steel-pipe pile is also improved, in another aspect, each end portion is hard Quality layer also acts as the effect of hoop, avoids each internal pressure excessive and causes steel pipe lower end by spalling, so, also further The structural stability for improving the application steel-pipe pile.
Preferably, it is the 1/4~1/3 of the length of steel pipe to be located at the concrete height in the steel pipe.Inventor's discovery, It, being capable of good stable steel pipe when steel pipe inner concrete uses above-mentioned height.
Preferably, it is additionally provided with sealing plate in the steel pipe top.On the one hand it is to make steel pipe top flat by the way that sealing plate is arranged Whole, convenient to carry out secure support to superstructure, on the other hand, sealing plate can also prevent building waste and rainwater etc. from falling into steel Pipe, it is ensured that steel pipe inner wall and inner concrete are not damaged.
Preferably, it is fixedly connected by the way of full weld between the sealing plate and the steel pipe.In this way, sealing plate also rises To the effect for reinforcing steel pipe top, reduce steel pipe top risk of distortion.
Preferably, the sealing plate outer rim forms flange plate beyond the outer wall of steel pipe, in the flange plate and the steel pipe Several stiffeners are provided between lateral wall.By this kind of mode, the further area for expanding sealing plate, and added by setting Strength plate also improves the reliability connected between sealing plate and steel pipe, and improves the reliability and stabilization supported to superstructure Property.
Preferably, bridging is also associated between adjacent steel pipe, the bridging is to be made in X-type cross using proximate matter. By the way that bridging is arranged, improve the stability of relative position between steel pipe, also improve the structural stability of steel-pipe pile entirety with Reliability.
As a preferred mode, coordinated by the way of on-fixed connection between the proximate matter of the bridging.Work as steel When pile pile is hit, such as when earthquake, the stress of each steel pipe has differences, so in this application, between the proximate matter of bridging Using revocable connection type, relatively flexible connection is formed between steel pipe, in this way, further improving the support of steel-pipe pile Reliability.
Preferably, lateral is additionally provided on the sealing plate, the lateral connects each steel of same steel-pipe pile along direction across bridge Pipe.
Preferably, the lateral includes at least two I-steel mutually spliced along direction across bridge.
By the setting of lateral, each steel pipe of same steel-pipe pile is connected, forms the support platform of support superstructure.
Preferably, steel reinforcement cage is additionally provided in the concrete, the steel reinforcement cage bottom is located in the drilling, top In the steel pipe.The structural strength that steel pipe inner concrete column is improved by the way that steel reinforcement cage is arranged, further improves to steel The reliability that pipe is reinforced.
Preferably, the steel reinforcement cage includes several main reinforcement and several hoops of being vertically provided in the stirrup in main ribs, Main ribs lower end is tip shape and exceeds the hoop, is embedded in the hardpan of the foot of hole.The application's In scheme, it sets vertical main reinforcement lower end to tip shape, after steel reinforcement cage is packed into drilling, main reinforcement lower end is facilitated to be inserted into hardpan It is interior, in this way, one side is further to improve the support reliability of steel pipe inner concrete column, also, in concreting, The risk for causing steel reinforcement cage to shift because concrete impacts is also reduced, further ensure steel pipe inner concrete column pours matter Amount.
Preferably, for the steel reinforcement cage using the reinforcing bar of a diameter of 16mm as main reinforcement and stirrup, main reinforcement spacing is 10cm, hoop Muscle spacing is 20cm.
Preferably, the concrete is C30 concrete.
Disclosed herein as well is a kind of construction methods of hardpan steel-pipe pile, include the following steps:
A, it lifts:Steel pipe is lifted to by design position using hanging apparatus;
B, sink:Steel pipe is hammered using vibration hammer, steel pipe is made to be inserted into soil layer, up to steel pipe lower end to hardpan;
C, it drills:Drilled to the hardpan below steel duct space using drilling device, drilling depth be more than or Equal to the projected depth of steel pipe insert into stratum;
D, concreting:The concrete perfusion in the drilling that step c is formed, concreting continue to pour after expiring the drilling It builds, makes in filling concrete to steel pipe, and reach design height.
It is compared under the premise of ensuring to form steel-pipe pile with excellent support reliability using the construction method of the application In conventional steel pilework, construction more simplifies, and construction cost can not only be greatly reduced, and can also substantially shorten construction Duration;Moreover, also can easily ensure the positional precision of steel pipe construction, steel-pipe pile construction quality is improved.
Preferably, in the step c, before drilling, steel pipe is connected with the front end of overhanging Bailey beam, it is ensured that steel pipe It is in vertical state in drilling.On the one hand it is to ensure that the infusion of steel pipe, ensures steel-pipe pile construction quality, on the other hand, steel pipe , can be using steel pipe as benchmark in drilling in vertical state, and then easily ensure the vertical of drilling.
When preferably, at drilling to steel pipe lower end, drilling progress, and the cement being added are reduced, at steel pipe base opening After stratum side wall carries out retaining wall, then normal drilling.It is herein the boundary of soil layer and hardpan when drilling is to steel pipe lower end Place, so, drilling progress is reduced here, and stratum is avoided to be mutated and cause to damage to drilling equipment, meanwhile, reinforce concentration of hydraulic mixture Detection, heating cement carry out retaining wall, on the one hand be reduce friction, reduce bit wear, be on the other hand also prevented from drilling and collapse Danger.
Preferably, steel reinforcement cage is additionally provided in the drilling, the steel reinforcement cage bottom is located in the drilling, and top is located at In the steel pipe, in the step d, before concreting, first by the reinforcement cage hoisting to the drilling, then carry out Concrete pours work.By the way that steel reinforcement cage is arranged, the structural strength of steel pipe inner concrete is improved, and then improve the knot of steel-pipe pile Structure strength and stability.
Preferably, in the step d, after the steel reinforcement cage is placed into drilling, steel reinforcement cage is hammered using vibration hammer, is made In the stratum of the end portion insertion drilling lower section of the steel reinforcement cage.By the hardpan of the end portion insertion lower section of steel reinforcement cage In, on the one hand it is the structural stability for improving steel pipe inner concrete stake, on the other hand, it is thus also avoided that in subsequent construction, for example (,) it is mixed When solidifying soil pours, the risk that steel reinforcement cage is shifted because being impacted so improves the construction quality of steel pipe inner concrete column.
Preferably, in the step c, after drilling, steel pipe is hammered using vibration hammer, makes the end portion of steel pipe It is embedded into hardpan.Steel pipe end portion is embedded into hardpan, makes in steel pipe end portion insertion hardpan, steel The hardpan of pipe end portion is in step-like so that hardpan also acts as good supporting to steel pipe lower end and peripheral sidewall Effect, is on the one hand the structural strength and stability for further improving steel-pipe pile, on the other hand, also acts as positioning steel tube Effect, in subsequent construction, avoids steel pipe from shifting.So the construction quality of steel-pipe pile is also improved, in another aspect, each lower end Partial hardpan also acts as the effect of hoop, avoids each internal pressure excessive and causes steel pipe lower end by spalling, so, Also the structural stability of the application steel-pipe pile is further improved;Also, it is further, due in boring procedure, drilling machine Hardpan is impacted, after the completion of drilling, hardpan topmost edge part is more loose because of impact, so at this In application, after the completion of drilling, steel pipe is further impacted, steel pipe is made further to sink, passes through hardpan top section On the one hand weaker zone is to make hardpan form step to carry out supporting to steel pipe bottom end side wall, on the other hand but also hard Layer can provide reliable support for steel pipe in the vertical direction, in this way, the further stability for ensuring steel-pipe pile with can By property.
It is further preferred that the depth that the steel pipe end portion is embedded into hardpan is the 1/10~1/ of drilling depth 9。
Preferably, in the construction method of the hardpan steel-pipe pile further include step e, the construction of steel pipe top:Wait for steel pipe After interior concreting is complete, steel pipe tip height is measured,
When steel pipe top is less than design height, the steel pipe segment for lifting by crane appropriate length is docked, and so that steel pipe top is reached and is set Meter height;
When steel pipe top is higher than design height, pipe cutting top makes steel pipe top reach design height.In the work of the application In sequence, cutting or the welding splicing on steel pipe top are carried out after steel pipe impact process again, is avoided in impact process to spelling The adverse effect that binding structure is brought, while but also steel pipe top is more smooth, avoiding steel pipe top due to blastic deformation to after Continuous construction brings adverse effect.
Preferably, in the step e, when steel pipe top reaches design height, sealing plate is set on steel pipe top, is then existed Full weld stiffener between the flange plate and steel pipe lateral wall of sealing plate, then bridging is also connected between adjacent steel pipe, then on sealing plate I-steel is also set up as lateral.
Preferably, the steel-pipe pile includes several steel pipes, by carry out the step a and b of root, is then set up between steel pipe Carrying platform for carrying drilling machine.In the construction method of application itself, carrying platform is arranged between steel pipe, is facilitated It while drilling construction, has also further ensured that in boring procedure, the stabilization of steel pipe.
Preferably, the carrying platform is built using beret slice.
Disclosed herein as well is a kind of steel trestle suitable for hardpan,
A kind of steel trestle suitable for hardpan, including several steel-pipe piles and the beam body being arranged on the steel-pipe pile, work as steel Pipe pile design position is hardpan, when steel pipe is difficult to be inserted into projected depth, using above-mentioned hardpan steel-pipe pile.This Shen Steel trestle please, using above-mentioned hardpan steel-pipe pile so that it is reliable and stable to be formed by steel-pipe pile, and significantly simplifies Working procedure reduces construction cost.
Preferably, the beam body along bridge to the corresponding riverbank in both ends or build to be provided on island and be used to support beam body Abutment is provided with the support proximate matter for being used to support beam body end on the abutment.
For current steel trestle structure, beam body both ends are directly overlapped on abutment, in practice of construction, although energy More reliable support is accessed, but in further research process, inventor has found that it, there is also there is deficiency, specifically exists In abutment is usually concrete structure, and finite stiffness when beam body is loaded excessive, can usually damage abutment concrete;It is another The bearing height of aspect, abutment is fixed, it is difficult to is adjusted according to actual needs to the bearing height of beam body on abutment.
The steel trestle of the application, the setting support proximate matter on abutment, increases abutment forced area, and then improves abutment support Reliability, and can be by selecting the proximate matter of suitable dimension to realize adjustment to bearing height, and then realize, Abutment beam The adjustment of body height;
Particularly, the bonding strength between the beam body and support proximate matter is occurred damaging strong less than the beam body by impact Degree, when beam body be hit power it is larger when, beam body be detached from proximate matter, be overlapped on abutment, in this way, when beam body be hit power it is larger when, Beam body damage is avoided, also, when impact force is especially big, beam body is overlapped on abutment, further buffering is provided by abutment Support reduces construction loss to ensure the safety of worker and structural device on beam.
Preferably, the support proximate matter includes at least two I-steel arranged side by side, the lower side wing of the I-steel It is fixedly connected with the abutment, is to be fixedly connected between the upper side wing of the I-steel.Form support side by side using I-steel Proximate matter, it is simple in structure, facilitate acquisition, and can also reuse;
Particularly, it is vertical plate-like that i-beam structure has web support, web on vertical, when beam body by along bridge to load When, web can improve certain elastic deformation space, reduce beam body by along bridge to there is the risk of blastic deformation when impact.
Preferably, the beam body is along to the beam body segment at both ends being to be obliquely installed along bridge, the support proximate matter with it is described Wedge cushion block is additionally provided between beam body, the upside of the correcting wedge is matched skewed, wedge piece with the beam body The downside of block is connected with the support proximate matter.It is connected between the setting raising beam body and support proximate matter of wedge cushion block close Property, also, the beam body segment at beam body both ends is obliquely installed, and is skewed when beam body is overlapped on abutment, is more advantageous to abutment The support force incrementally increased is formed to beam body, gradual increased cushioning supportive is provided, is damaged with this further beam body that reduces, with And ensure the safety of worker and structural device on beam, reduce construction loss.
Preferably, it is covered with protection against erosion sandbag on the soil body below the abutment.By the way that protection against erosion sandbag is arranged, it is ensured that The safety of the soil body below abutment.
Preferably, the beam body includes several beam body segments, and the beam body segment is spliced using beret slice, the shellfish Thunder piece is arranged in the lateral of the steel-pipe pile, and connecting cross beam corresponding with the lateral is provided on the beret slice, described Connecting cross beam is arranged along direction across bridge, and is pressed together on the upside of the beret slice lower boom, in the connecting cross beam and the lateral Between be also associated with montant.Beam body segment is formed using beret slice assembly, beam body is being formed by beam body section assembling, in this way, side Just the spelling of beam body.
Preferably, bridge deck structure is provided on the beam body segment, the bridge deck structure includes being laid in the beam body Several first distribution beams, and several second distribution beams for being arranged in first distribution beam, first distribution beam and the Two distribution beams are perpendicular, and the bridge deck structure further includes the bridge surface armor plate being laid in second distribution beam.Pass through first point On the one hand setting with beam and the second distribution beam is to carry out secure support to superstructure and load, on the other hand, also further The structural strength for strengthening beam body itself.
Preferably, between the beam body and first distribution beam, first distribution beam and second distribution beam it Between and second distribution beam and the bridge surface armor plate between to be fixedly connected.
Preferably, first distribution beam is to be arranged in I-steel, the lower side wing of first distribution beam along direction across bridge It being fixedly connected with the beam body, the upper side wing of first distribution beam is fixedly connected with second distribution beam, and described second Distribution beam is along bridge, to being arranged in channel steel, the web of second distribution beam is vertically arranged.
Preferably, be spaced apart of adjacent second distribution beam has distance, the opening direction of the second distribution beam channel steel The middle part of beam body direction across bridge.The opening of channel steel can be avoided effectively towards beam body middle part in embedded all grooves of notch such as sundries.
Disclosed herein as well is a kind of steel trestle construction method,
A kind of steel trestle construction method, includes the following steps:
A, lifting first across with second across steel-pipe pile:First across with second across Design of Steel-tube Piles position carry out steel-pipe pile Construction;
B, build first across with the second bridge body:Built on the steel-pipe pile that step A is formed first across with the second bridge body;
C, next bridge body is built:Hanging device lifts by crane next bridge body section in the beam body put up, and is carried out after contraposition Installation forms overhanging girder construction;
D, steel pipe pile driving construction:Hanging device is moved in the overhanging girder construction of step C, and carries out the construction of steel-pipe pile;
Step C and D are repeated, until last bridge body section is built and finished.
The construction method of the application, hanging device carry out by cross follow-up beam body and steel-pipe pile in the beam body put up Construction, avoids the process for building operation platform in river, and then significantly simplified construction, shortens the construction period, reduces Construction cost.
Preferably, in the step A and step D, when Design of Steel-tube Piles position is hardpan, steel pipe is difficult to be inserted into and set When counting depth, using the construction method of hardpan steel-pipe pile.
The steel trestle construction method of the application, when Design of Steel-tube Piles position be hardpan, using above-mentioned hardpan The construction method of steel-pipe pile, in this way, also further ensuring the safety and reliability that steel-pipe pile is supported;Also, also substantially Working procedure is simplified, the construction period is shortened, reduces construction cost.
Preferably, in the step A, further include abutment construction, first across with before the second across steel pipe pile driving construction or When construction, construct to abutment.In this way, also further shortening the construction period.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
A kind of steel trestle suitable for hardpan of the application, using hardpan steel-pipe pile so that it is steady to be formed by steel-pipe pile It is fixed reliable, and working procedure has been significantly simplified, reduce construction cost.
Description of the drawings
Fig. 1 is the partial structural diagram of hardpan steel-pipe pile steel pipe end portion;
Fig. 2 is the structural schematic diagram of steel-pipe pile and beam body cooperation
Fig. 3 is the structural schematic diagram of steel-pipe pile and another visual angle of beam body cooperation,
Fig. 4 is the partial enlarged view at A in Fig. 3,
Fig. 5 is the structural schematic diagram of steel trestle,
Fig. 6 is the structural schematic diagram of steel trestle Abutment,
Fig. 7 is the partial enlarged view at B in Fig. 6,
Fig. 8 is the step schematic diagram of steel trestle steel trestle construction method,
Fig. 9 is the step block diagram of hardpan steel pipe pile construction method,
It is marked in figure:1- steel pipes, 2- hardpans, 3- soil layers, 4- concrete columns, 5- sealing plates, 6- stiffeners, 7- scissors Support, 8- laterals, 9- steel reinforcement cages, 10- beam bodies, 11- abutments, 12- support proximate matters, the first distribution beams of 13-, the second distribution beams of 14-, 15- hanging devices.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.
Embodiment 1, as shown in figs 1-9,
A kind of hardpan steel-pipe pile, including at least two steel pipes 1,1 bottom of the steel pipe is abutted against with hardpan 2, described It is provided with drilling on the corresponding hardpan in 1 inner space of steel pipe 2, concrete is perfused in the drilling, the concrete pours Continue to upwardly extend after building the completely described drilling, the which part that the concrete forms cylinder is made to be located in the steel pipe 1.
The hardpan steel-pipe pile of the present embodiment, when construction, when steel pipe 1 sink down into hardpan 2 can not further under When heavy, stretched into and is drilled by drilling machine, then the concrete perfusion in drilling, behind filling concrete fully-jewelled hole, continue to be perfused, So that 4 part of concrete column that hardening is formed is located in drilling, a part is located in steel pipe 1, in this way, realizing to steel pipe 1 Fixation, for traditional approach, form of construction work is simple, has not only significantly simplified working procedure, but also can pass through brill The height of 1 inner concrete of hole depth and steel pipe come to steel-pipe pile structural strength and stability carry out coordination control, convenient for ensure The stability and reliability of steel-pipe pile.
Mode as a further preference, 1 lower end of the steel pipe are embedded in the hardpan 2, make under the steel pipe 1 The lateral wall of end and end portion fits with the hardpan 2.This kind of mode makes 1 end portion of steel pipe be embedded in hard In stratum 2, the hardpan 2 of 1 end portion of steel pipe is in step-like so that hardpan 2 to 1 lower end of steel pipe and peripheral sidewall also Good support action is played, is on the one hand the structural strength and stability for further improving steel-pipe pile, on the other hand, also Play the role of positioning steel tube 1, in subsequent construction, steel pipe 1 is avoided to shift.So the construction quality of steel-pipe pile is also improved, In another aspect, the hardpan 2 of each end portion also acts as the effect of hoop, avoids each internal pressure excessive and cause steel 1 lower end of pipe by spalling, so, also further improve the structural stability of the present embodiment steel-pipe pile.
Mode as a further preference, it is the 1/4 of 1 length of the steel pipe to be located at the concrete height in the steel pipe 1 ~1/3.Inventor's discovery being capable of good stable steel pipe 1 when 1 inner concrete of steel pipe uses above-mentioned height.
Mode as a further preference is additionally provided with sealing plate 5 at 1 top of the steel pipe.By the way that sealing plate 5, a side is arranged Face is to keep 1 top of steel pipe smooth, convenient to carry out secure support to superstructure, and on the other hand, sealing plate 5 can also prevent building rubbish Rubbish and rainwater etc. fall into steel pipe 1, it is ensured that 1 inner wall of steel pipe and inner concrete are not damaged.
Mode as a further preference, between the sealing plate 5 and the steel pipe 1 by the way of full weld the company of being fixed It connects.In this way, sealing plate 5 also acts as the effect for reinforcing 1 top of steel pipe, reduce 1 top risk of distortion of steel pipe.
Mode as a further preference, 5 outer rim of the sealing plate forms flange plate beyond 1 outer wall of the steel pipe, described It is provided with several stiffeners 6 between 1 lateral wall of flange plate and the steel pipe.By this kind of mode, further expansion sealing plate 5 Area, and by the way that stiffener 6 is arranged, the reliability connected between sealing plate 5 and steel pipe 1 is also improved, and improve to top The reliability and stability of structural support.
Mode as a further preference, bridging 7 is also associated between adjacent steel pipe 1, and the bridging 7 is using type Material is made in X-type cross.By the way that bridging 7 is arranged, the stability of relative position between steel pipe 1 is improved, steel-pipe pile is also improved Whole structural stability and reliability.
As a kind of mode mode as a further preference, connected using on-fixed between the proximate matter of the bridging 7 Mode coordinate.When steel-pipe pile is hit, such as when earthquake, the stress of each steel pipe 1 has differences, so in the present embodiment In, revocable connection type is used between the proximate matter of bridging 7, and relatively flexible connection is formed between steel pipe 1, in this way, into The support reliability of the raising steel-pipe pile of one step.
Mode as a further preference, lateral 8 is additionally provided on the sealing plate 5, and the lateral 8 is same along direction across bridge connection Each steel pipe 1 of one steel-pipe pile.
Mode as a further preference, the lateral 8 include at least two I-steel mutually spliced along direction across bridge.
By the setting of lateral 8, each steel pipe 1 of same steel-pipe pile is connected, forms the support platform of support superstructure.
Mode as a further preference is additionally provided with steel reinforcement cage 9,9 bottom position of the steel reinforcement cage in the concrete In in the drilling, top is located in the steel pipe 1.It is strong by the structure that the raising 1 inner concrete column of steel pipe of steel reinforcement cage 9 is arranged Degree, further improves the reliability reinforced to steel pipe 1.
Mode as a further preference, the steel reinforcement cage 9 include several main reinforcement and several hoops of being vertically provided in institute The stirrup in main reinforcement is stated, main ribs lower end is tip shape and exceeds the hoop, with being embedded in the hard of the foot of hole In layer 2.In the scheme of the present embodiment, it sets vertical main reinforcement lower end to tip shape, it is convenient after steel reinforcement cage 9 is packed into drilling Main reinforcement lower end be inserted into hardpan 2 in, in this way, on the one hand be further improve 1 inner concrete column of steel pipe support it is reliable Property, also, in concreting, the risk for causing steel reinforcement cage 9 to shift because concrete impacts is also reduced, it further ensures that The pouring quality of 1 inner concrete column of steel pipe.
Mode as a further preference, the steel reinforcement cage 9 is using the reinforcing bar of a diameter of 16mm as main reinforcement and stirrup, master Muscle spacing is 10cm, stirrup spacing 20cm.
Mode as a further preference, the concrete are C30 concrete.
Embodiment 2, as shown in figs 1-9:
A kind of construction method of hardpan steel-pipe pile, includes the following steps:
A, it lifts:Steel pipe 1 is lifted to by design position using hanging apparatus;
B, sink:Steel pipe 1 is hammered using vibration hammer, steel pipe 1 is made to be inserted into soil layer, up to 1 lower end of steel pipe to hardpan 2;
C, it drills:Drilled to the hardpan 2 below 1 inner space of steel pipe using drilling device, drilling depth be more than or Person is equal to the projected depth of 1 insert into stratum of steel pipe;
D, concreting:The concrete perfusion in the drilling that step c is formed, concreting continue to pour after expiring the drilling It builds, makes in filling concrete to steel pipe 1, and reach design height.
Using the construction method of the present embodiment, under the premise of ensuring to form steel-pipe pile with excellent support reliability, phase Compared with conventional steel pilework, construction more simplifies, and construction cost can not only be greatly reduced, and can also substantially shorten and apply The work duration;Moreover, also can easily ensure the positional precision that steel pipe 1 is constructed, steel-pipe pile construction quality is improved.
Mode as a further preference, in the step c, before drilling, by the front end of steel pipe 1 and overhanging Bailey beam It is connected, it is ensured that steel pipe 1 is in vertical state in drilling.On the one hand it is to ensure that the infusion of steel pipe 1, ensures steel pipe pile driving construction matter Amount, on the other hand, steel pipe 1 are in vertical state, can be using steel pipe 1 as benchmark in drilling, and then easily ensure to drill It is vertical.
Mode as a further preference when at drilling to 1 lower end of steel pipe, reduces drilling progress, and the cement being added, After retaining wall being carried out to the stratum side wall at 1 base opening of steel pipe, then normal drilling.It is herein soil layer when drilling is to 1 lower end of steel pipe 3 with the intersection of hardpan 2, so, reduce drilling progress here, stratum avoided to be mutated and cause to damage to drilling equipment Wound, meanwhile, reinforce the detection of concentration of hydraulic mixture, heating cement carries out retaining wall, is on the one hand to reduce friction, reduces bit wear, separately On the one hand it is also prevented from the danger that drilling is collapsed.
Mode as a further preference is additionally provided with steel reinforcement cage 9 in the drilling, and 9 bottom of the steel reinforcement cage is located at institute It states in drilling, top is located in the steel pipe 1, in the step d, before concreting, first lifts by crane the steel reinforcement cage 9 To in the drilling, then carry out concrete pour work.By the way that steel reinforcement cage 9 is arranged, the structure for improving 1 inner concrete of steel pipe is strong Degree, and then improve the structural strength and stability of steel-pipe pile.
Mode as a further preference, in the step d, after the steel reinforcement cage 9 is placed into drilling, using vibration Hammer hammering steel reinforcement cage 9, makes the end portion of the steel reinforcement cage 9 be embedded in the stratum of drilling lower section.By the end portion of steel reinforcement cage 9 On the one hand it is on the other hand the structural stability for improving 1 inner concrete stake of steel pipe also avoids in the hardpan 2 of embedded lower section In subsequent construction, such as when concreting, the risk that steel reinforcement cage 9 is shifted because being impacted so is improved in steel pipe 1 and is mixed The construction quality of solidifying earth pillar.
After drilling, steel pipe 1 is hammered using vibration hammer in the step c for mode as a further preference, The end portion of steel pipe 1 is set to be embedded into hardpan 2.1 end portion of steel pipe is embedded into hardpan 2, makes 1 lower end of steel pipe It is partially submerged into hardpan 2, the hardpan 2 of 1 end portion of steel pipe is in step-like so that hardpan 2 is to 1 lower end of steel pipe Good support action is also acted as with peripheral sidewall, is on the one hand the structural strength and stabilization for further improving steel-pipe pile Property, on the other hand, the effect of positioning steel tube 1 is also acted as, in subsequent construction, steel pipe 1 is avoided to shift.So also improving steel pipe The construction quality of stake avoids each internal pressure in another aspect, the hardpan 2 of each end portion also acts as the effect of hoop Power is excessive and causes 1 lower end of steel pipe by spalling, so, also further improve the structural stability of the present embodiment steel-pipe pile; Also, it is further, since in boring procedure, drilling machine impacts hardpan 2, after the completion of drilling, hardpan 2 Topmost edge part is more loose because of impact, so in the present embodiment, after the completion of drilling, further impacting steel pipe 1, making Steel pipe 1 further sinks, and passes through the weaker zone of 2 top section of hardpan, is on the one hand that hardpan 2 is made to form step pair 1 bottom end side wall of steel pipe carries out supporting, on the other hand but also hardpan 2 can be that steel pipe 1 provides reliably in the vertical direction Support, in this way, the further stability and reliability for ensuring steel-pipe pile.
It is further used as further preferred embodiment, the depth that 1 end portion of the steel pipe is embedded into hardpan 2 is to bore The 1/10~1/9 of hole depth.
Mode as a further preference further includes step e, steel pipe 1 in the construction method of the hardpan steel-pipe pile It constructs on top:After the concreting in steel pipe 1 is complete, 1 tip height of steel pipe is measured,
When 1 top of steel pipe is less than design height, 1 segment of steel pipe for lifting by crane appropriate length is docked, and 1 top of steel pipe is made to reach Design height;
When 1 top of steel pipe is higher than design height, 1 top of pipe cutting makes 1 top of steel pipe reach design height.In this implementation In the process of example, steel pipe 1 carries out cutting or the welding splicing on 1 top of steel pipe again after impacting process, avoid and impacted The adverse effect that splicing construction is brought in journey, while but also 1 top of steel pipe is more smooth, avoiding 1 top of steel pipe because of impact It deforms and brings adverse effect to subsequent construction.
Mode as a further preference in the step e, when 1 top of steel pipe reaches design height, is pushed up in steel pipe 1 Sealing plate 5 is arranged in end, then the full weld stiffener 6 between 1 lateral wall of the flange plate of sealing plate 5 and steel pipe, then between adjacent steel pipe 1 also Bridging 7 is connected, then I-steel is also set up as lateral 8 on sealing plate 5.
Mode as a further preference, the steel-pipe pile include several steel pipes 1, by carry out the step a and b of root, so The carrying platform for carrying drilling machine is set up between steel pipe 1 afterwards.In the construction method of application itself, carrying platform is arranged It between steel pipe 1, while facilitating drilling construction, has also further ensured that in boring procedure, the stabilization of steel pipe 1.
Mode as a further preference, the carrying platform are built using beret slice.
Embodiment 3, as shown in figs 1-9,
A kind of steel trestle suitable for hardpan, including several steel-pipe piles and the beam body 10 that is arranged on the steel-pipe pile, when Design of Steel-tube Piles position is hardpan, when steel pipe is difficult to be inserted into projected depth, using hardpan steel-pipe pile.The present embodiment Steel trestle, using the hardpan steel-pipe pile of above-described embodiment so that it is reliable and stable to be formed by steel-pipe pile, and substantially simple Change working procedure, reduces construction cost.
The hardpan steel-pipe pile, including at least two steel pipes 1,1 bottom of the steel pipe are abutted against with hardpan 2, It is provided with drilling on the corresponding hardpan in 1 inner space of the steel pipe 2, concrete, the coagulation are perfused in the drilling Soil continues to upwardly extend after pouring the completely described drilling, and the which part that the concrete forms cylinder is made to be located in the steel pipe 1.
The hardpan steel-pipe pile of the present embodiment, when construction, when steel pipe 1 sink down into hardpan 2 can not further under When heavy, stretched into and is drilled by drilling machine, then the concrete perfusion in drilling, behind filling concrete fully-jewelled hole, continue to be perfused, So that 4 part of concrete column that hardening is formed is located in drilling, a part is located in steel pipe 1, in this way, realizing to steel pipe 1 Fixation, for traditional approach, form of construction work is simple, has not only significantly simplified working procedure, but also can pass through brill The height of 1 inner concrete of hole depth and steel pipe come to steel-pipe pile structural strength and stability carry out coordination control, convenient for ensure The stability and reliability of steel-pipe pile.
Mode as a further preference, 1 lower end of the steel pipe are embedded in the hardpan 2, make under the steel pipe 1 The lateral wall of end and end portion fits with the hardpan 2.This kind of mode makes 1 end portion of steel pipe be embedded in hard In stratum 2, the hardpan 2 of 1 end portion of steel pipe is in step-like so that hardpan 2 to 1 lower end of steel pipe and peripheral sidewall also Good support action is played, is on the one hand the structural strength and stability for further improving steel-pipe pile, on the other hand, also Play the role of positioning steel tube 1, in subsequent construction, steel pipe 1 is avoided to shift.So the construction quality of steel-pipe pile is also improved, In another aspect, the hardpan 2 of each end portion also acts as the effect of hoop, avoids each internal pressure excessive and cause steel 1 lower end of pipe by spalling, so, also further improve the structural stability of the present embodiment steel-pipe pile.
Mode as a further preference, it is the 1/4 of 1 length of the steel pipe to be located at the concrete height in the steel pipe 1 ~1/3.Inventor's discovery being capable of good stable steel pipe 1 when 1 inner concrete of steel pipe uses above-mentioned height.
Mode as a further preference is additionally provided with sealing plate 5 at 1 top of the steel pipe.By the way that sealing plate 5, a side is arranged Face is to keep 1 top of steel pipe smooth, convenient to carry out secure support to superstructure, and on the other hand, sealing plate 5 can also prevent building rubbish Rubbish and rainwater etc. fall into steel pipe 1, it is ensured that 1 inner wall of steel pipe and inner concrete are not damaged.
Mode as a further preference, between the sealing plate 5 and the steel pipe 1 by the way of full weld the company of being fixed It connects.In this way, sealing plate 5 also acts as the effect for reinforcing 1 top of steel pipe, reduce 1 top risk of distortion of steel pipe.
Mode as a further preference, 5 outer rim of the sealing plate forms flange plate beyond 1 outer wall of the steel pipe, described It is provided with several stiffeners 6 between 1 lateral wall of flange plate and the steel pipe.By this kind of mode, further expansion sealing plate 5 Area, and by the way that stiffener 6 is arranged, the reliability connected between sealing plate 5 and steel pipe 1 is also improved, and improve to top The reliability and stability of structural support.
Mode as a further preference, bridging 7 is also associated between adjacent steel pipe 1, and the bridging 7 is using type Material is made in X-type cross.By the way that bridging 7 is arranged, the stability of relative position between steel pipe 1 is improved, steel-pipe pile is also improved Whole structural stability and reliability.
As a kind of mode mode as a further preference, connected using on-fixed between the proximate matter of the bridging 7 Mode coordinate.When steel-pipe pile is hit, such as when earthquake, the stress of each steel pipe 1 has differences, so in the present embodiment In, revocable connection type is used between the proximate matter of bridging 7, and relatively flexible connection is formed between steel pipe 1, in this way, into The support reliability of the raising steel-pipe pile of one step.
Mode as a further preference, lateral 8 is additionally provided on the sealing plate 5, and the lateral 8 is same along direction across bridge connection Each steel pipe 1 of one steel-pipe pile.
Mode as a further preference, the lateral 8 include at least two I-steel mutually spliced along direction across bridge.
By the setting of lateral 8, each steel pipe 1 of same steel-pipe pile is connected, forms the support platform of support superstructure.
Mode as a further preference is additionally provided with steel reinforcement cage 9,9 bottom position of the steel reinforcement cage in the concrete In in the drilling, top is located in the steel pipe 1.It is strong by the structure that the raising 1 inner concrete column of steel pipe of steel reinforcement cage 9 is arranged Degree, further improves the reliability reinforced to steel pipe 1.
Mode as a further preference, the steel reinforcement cage 9 include several main reinforcement and several hoops of being vertically provided in institute The stirrup in main reinforcement is stated, main ribs lower end is tip shape and exceeds the hoop, with being embedded in the hard of the foot of hole In layer 2.In the scheme of the present embodiment, it sets vertical main reinforcement lower end to tip shape, it is convenient after steel reinforcement cage 9 is packed into drilling Main reinforcement lower end be inserted into hardpan 2 in, in this way, on the one hand be further improve 1 inner concrete column of steel pipe support it is reliable Property, also, in concreting, the risk for causing steel reinforcement cage 9 to shift because concrete impacts is also reduced, it further ensures that The pouring quality of 1 inner concrete column of steel pipe.
Mode as a further preference, the steel reinforcement cage 9 is using the reinforcing bar of a diameter of 16mm as main reinforcement and stirrup, master Muscle spacing is 10cm, stirrup spacing 20cm.
Mode as a further preference, the concrete are C30 concrete
Mode as a further preference, the beam body 10 along bridge to the corresponding riverbank in both ends or build be arranged on island it is useful In the abutment 11 of support beam body 10, the support proximate matter 12 for being used to support 10 end of beam body is provided on the abutment 11.
The steel trestle of the present embodiment, the setting support proximate matter 12 on abutment 11, increases 11 forced area of abutment, and then improve The reliability that abutment 11 supports, and can be by selecting the proximate matter of suitable dimension to realize the adjustment to bearing height, Jin Ershi It is existing, the adjustment of 10 height of beam body at abutment 11;
Particularly, the bonding strength between the beam body 10 and support proximate matter 12 is damaged less than the beam body 10 by impact Intensity, when beam body 10 be hit power it is larger when, beam body 10 be detached from proximate matter, be overlapped on abutment 11, in this way, when beam body 10 is rushed Hit power it is larger when, avoid the damage of beam body 10, also, when impact force is especially big, beam body 10 is overlapped on abutment 11, by abutment 11 provide further cushioning supportive, to ensure the safety of worker and structural device on beam, reduce construction loss.
Mode as a further preference, the support proximate matter 12 includes at least two I-steel arranged side by side, described The lower side wing of I-steel is fixedly connected with the abutment 11, is to be fixedly connected between the upper side wing of the I-steel.Using I-steel forms support proximate matter 12 side by side, simple in structure, facilitates acquisition, and can also reuse;
Particularly, it is vertical plate-like that i-beam structure has web support, web on vertical, when beam body 10 by along bridge to load When, web can improve certain elastic deformation space, reduce beam body 10 by along bridge to there is the risk of blastic deformation when impact.
Mode as a further preference, the beam body 10 is obliquely installed along bridge to the beam body segment at both ends, in institute It states and is additionally provided with wedge cushion block between support proximate matter 12 and the beam body 10, the upside of the correcting wedge is and the beam body 10 Matched skewed, the downside of correcting wedge is connected with the support proximate matter 12.The beam body segment at 10 both ends of beam body tilts Setting is skewed when beam body 10 is overlapped on abutment 11, is more advantageous to abutment 11 and forms the branch incrementally increased to beam body 10 Support force provides gradual increased cushioning supportive, is damaged with this further beam body 10 that reduces, and ensure worker and structure on beam The safety of equipment reduces construction loss.
Mode as a further preference is covered with protection against erosion sandbag on the soil body below the abutment 11.By setting Set protection against erosion sandbag, it is ensured that the safety of the 11 lower section soil body of abutment.
Mode as a further preference, the beam body 10 include several beam body segments, and the beam body segment uses shellfish thunder Piece is spliced, and the beret slice is arranged in the lateral 8 of the steel-pipe pile, is provided on the beret slice and the lateral 8 Corresponding connecting cross beam, the connecting cross beam is arranged along direction across bridge, and is pressed together on the upside of the beret slice lower boom, described It is also associated with montant between connecting cross beam and the lateral 8.Beam body segment is formed using beret slice assembly, is spelled by beam body segment Dress forms beam body 10, in this way, facilitating the spelling of beam body 10.
Mode as a further preference, bridge deck structure is provided on the beam body segment, and the bridge deck structure includes paving Several first distribution beams 13 being located in the beam body 10, and several second distribution beams for being arranged in first distribution beam 13 14, first distribution beam 13 and the second distribution beam 14 are perpendicular, and the bridge deck structure further includes being laid on second distribution Bridge surface armor plate on beam 14.On the one hand it is to superstructure and load by the setting of the first distribution beam 13 and the second distribution beam 14 Lotus carries out secure support, on the other hand, also further strengthens beam body 10 structural strength of itself.
Mode as a further preference, between the beam body 10 and first distribution beam 13, first distribution beam It is to be fixedly connected between 13 and second distribution beam 14 and between second distribution beam 14 and the bridge surface armor plate.
Mode as a further preference, first distribution beam 13 are along direction across bridge setting in I-steel, described first The lower side wing of distribution beam 13 is fixedly connected with the beam body 10, the upper side wing of first distribution beam 13 with described second point It is fixedly connected with beam 14, second distribution beam 14 is along bridge, to being arranged in channel steel, the web of second distribution beam 14 is It is vertically arranged.
Mode as a further preference, be spaced apart of adjacent second distribution beam 14 have distance, second distribution The opening of 14 channel steel of beam is towards the middle part of 10 direction across bridge of beam body.The opening of channel steel can be avoided effectively miscellaneous towards 10 middle part of beam body In embedded all grooves of notch such as object.
Embodiment 4, as shown in figs 1-9:
A kind of steel trestle construction method, includes the following steps:
A, lifting first across with second across steel-pipe pile:First across with second across Design of Steel-tube Piles position carry out steel-pipe pile Construction;
B, build first across with the second bridge body 10:Built on the steel-pipe pile that step A is formed first across with the second bridge body 10;
C, next bridge body 10 is built:Hanging device 15 lifts by crane next bridge body section in the beam body 10 put up, contraposition After installed, formed overhanging girder construction;
D, steel pipe pile driving construction:Hanging device 15 is moved in the overhanging girder construction of step C, and carries out the construction of steel-pipe pile;
Step C and D are repeated, until last bridge body section is built and finished.
The construction method of the present embodiment, hanging device 15 is in the beam body 10 put up to follow-up beam body 10 and steel-pipe pile It is constructed by cross, avoids the process for building operation platform in river, and then significantly simplified construction, shorten construction work Phase reduces construction cost.
Mode as a further preference, in the step A and step D, when Design of Steel-tube Piles position is hardpan 2, When steel pipe 1 is difficult to be inserted into projected depth, using the construction method of hardpan steel-pipe pile.
The steel trestle construction method of the present embodiment, when Design of Steel-tube Piles position be hardpan 2, using hardpan steel pipe The construction method of stake, in this way, also further ensuring the safety and reliability that steel-pipe pile is supported;Also, it also significantly simplifies Working procedure, shortens the construction period, reduces construction cost.
The construction method of the hardpan steel-pipe pile, includes the following steps:
A, it lifts:Steel pipe 1 is lifted to by design position using hanging apparatus;
B, sink:Steel pipe 1 is hammered using vibration hammer, steel pipe 1 is made to be inserted into soil layer, up to 1 lower end of steel pipe to hardpan 2;
C, it drills:Drilled to the hardpan 2 below 1 inner space of steel pipe using drilling device, drilling depth be more than or Person is equal to the projected depth of 1 insert into stratum of steel pipe;
D, concreting:The concrete perfusion in the drilling that step c is formed, concreting continue to pour after expiring the drilling It builds, makes in filling concrete to steel pipe 1, and reach design height.
Using the construction method of the present embodiment, under the premise of ensuring to form steel-pipe pile with excellent support reliability, phase Compared with conventional steel pilework, construction more simplifies, and construction cost can not only be greatly reduced, and can also substantially shorten and apply The work duration;Moreover, also can easily ensure the positional precision that steel pipe 1 is constructed, steel-pipe pile construction quality is improved.
Mode as a further preference, in the step c, before drilling, by the front end of steel pipe 1 and overhanging Bailey beam It is connected, it is ensured that steel pipe 1 is in vertical state in drilling.On the one hand it is to ensure that the infusion of steel pipe 1, ensures steel pipe pile driving construction matter Amount, on the other hand, steel pipe 1 are in vertical state, can be using steel pipe 1 as benchmark in drilling, and then easily ensure to drill It is vertical.
Mode as a further preference when at drilling to 1 lower end of steel pipe, reduces drilling progress, and the cement being added, After retaining wall being carried out to the stratum side wall at 1 base opening of steel pipe, then normal drilling.It is herein soil layer when drilling is to 1 lower end of steel pipe 3 with the intersection of hardpan 2, so, reduce drilling progress here, stratum avoided to be mutated and cause to damage to drilling equipment Wound, meanwhile, reinforce the detection of concentration of hydraulic mixture, heating cement carries out retaining wall, is on the one hand to reduce friction, reduces bit wear, separately On the one hand it is also prevented from the danger that drilling is collapsed.
Mode as a further preference is additionally provided with steel reinforcement cage 9 in the drilling, and 9 bottom of the steel reinforcement cage is located at institute It states in drilling, top is located in the steel pipe 1, in the step d, before concreting, first lifts by crane the steel reinforcement cage 9 To in the drilling, then carry out concrete pour work.By the way that steel reinforcement cage 9 is arranged, the structure for improving 1 inner concrete of steel pipe is strong Degree, and then improve the structural strength and stability of steel-pipe pile.
Mode as a further preference, in the step d, after the steel reinforcement cage 9 is placed into drilling, using vibration Hammer hammering steel reinforcement cage 9, makes the end portion of the steel reinforcement cage 9 be embedded in the stratum of drilling lower section.By the end portion of steel reinforcement cage 9 On the one hand it is on the other hand the structural stability for improving 1 inner concrete stake of steel pipe also avoids in the hardpan 2 of embedded lower section In subsequent construction, such as when concreting, the risk that steel reinforcement cage 9 is shifted because being impacted so is improved in steel pipe 1 and is mixed The construction quality of solidifying earth pillar.
After drilling, steel pipe 1 is hammered using vibration hammer in the step c for mode as a further preference, The end portion of steel pipe 1 is set to be embedded into hardpan 2.1 end portion of steel pipe is embedded into hardpan 2, makes 1 lower end of steel pipe It is partially submerged into hardpan 2, the hardpan 2 of 1 end portion of steel pipe is in step-like so that hardpan 2 is to 1 lower end of steel pipe Good support action is also acted as with peripheral sidewall, is on the one hand the structural strength and stabilization for further improving steel-pipe pile Property, on the other hand, the effect of positioning steel tube 1 is also acted as, in subsequent construction, steel pipe 1 is avoided to shift.So also improving steel pipe The construction quality of stake avoids each internal pressure in another aspect, the hardpan 2 of each end portion also acts as the effect of hoop Power is excessive and causes 1 lower end of steel pipe by spalling, so, also further improve the structural stability of the present embodiment steel-pipe pile; Also, it is further, since in boring procedure, drilling machine impacts hardpan 2, after the completion of drilling, hardpan 2 Topmost edge part is more loose because of impact, so in the present embodiment, after the completion of drilling, further impacting steel pipe 1, making Steel pipe 1 further sinks, and passes through the weaker zone of 2 top section of hardpan, is on the one hand that hardpan 2 is made to form step pair 1 bottom end side wall of steel pipe carries out supporting, on the other hand but also hardpan 2 can be that steel pipe 1 provides reliably in the vertical direction Support, in this way, the further stability and reliability for ensuring steel-pipe pile.
It is further used as further preferred embodiment, the depth that 1 end portion of the steel pipe is embedded into hardpan 2 is to bore The 1/10~1/9 of hole depth.
Mode as a further preference further includes step e, steel pipe 1 in the construction method of 2 steel-pipe pile of the hardpan It constructs on top:After the concreting in steel pipe 1 is complete, 1 tip height of steel pipe is measured,
When 1 top of steel pipe is less than design height, 1 segment of steel pipe for lifting by crane appropriate length is docked, and 1 top of steel pipe is made to reach Design height;
When 1 top of steel pipe is higher than design height, 1 top of pipe cutting makes 1 top of steel pipe reach design height.In this implementation In the process of example, steel pipe 1 carries out cutting or the welding splicing on 1 top of steel pipe again after impacting process, avoid and impacted The adverse effect that splicing construction is brought in journey, while but also 1 top of steel pipe is more smooth, avoiding 1 top of steel pipe because of impact It deforms and brings adverse effect to subsequent construction.
Mode as a further preference in the step e, when 1 top of steel pipe reaches design height, is pushed up in steel pipe 1 Sealing plate 5 is arranged in end, then the full weld stiffener 6 between 1 lateral wall of the flange plate of sealing plate 5 and steel pipe, then between adjacent steel pipe 1 also Bridging 7 is connected, then I-steel is also set up as lateral 8 on sealing plate 5.
Mode as a further preference, the steel-pipe pile include several steel pipes 1, by carry out the step a and b of root, so The carrying platform for carrying drilling machine is set up between steel pipe 1 afterwards.In the construction method of application itself, carrying platform is arranged It between steel pipe 1, while facilitating drilling construction, has also further ensured that in boring procedure, the stabilization of steel pipe 1.
Mode as a further preference, the carrying platform are built using beret slice
Mode as a further preference, in the step A, further include abutment 11 construct, first across with second across steel pipe Before pile driving construction or when constructing, construct to abutment 11.In this way, also further shortening the construction period.
Above example is only to illustrate the present invention and not limits technical solution described in the invention, although this explanation Book is with reference to above-mentioned each embodiment to present invention has been detailed description, but the present invention is not limited to above-mentioned specific implementation Mode, therefore any modify to the present invention or equivalent replacement;And the technical side of all spirit and scope for not departing from invention Case and its improvement, are intended to be within the scope of the claims of the invention.

Claims (10)

1. a kind of steel trestle suitable for hardpan, it is characterised in that:Including several steel-pipe piles and it is arranged in the steel-pipe pile On beam body, when Design of Steel-tube Piles position be hardpan, when steel pipe is difficult to be inserted into projected depth, using hardpan steel pipe Stake, the hardpan steel-pipe pile, including at least two steel pipes, the steel pipe bottom are abutted against with hardpan, the steel pipe It is provided with drilling on the corresponding hardpan in inner space, concrete is perfused in the drilling, institute is expired in the concreting Continue to upwardly extend after stating drilling, the which part that the concrete forms cylinder is made to be located in the steel pipe.
2. steel trestle according to claim 1, it is characterised in that:The steel pipe lower end is embedded in the hardpan, is made The lower end of the steel pipe and the lateral wall of end portion fit with the hardpan.
3. steel trestle according to claim 2, it is characterised in that:Concrete height in the steel pipe is the steel The 1/4~1/3 of length of tube.
4. steel trestle according to claim 3, it is characterised in that:It is additionally provided with sealing plate in the steel pipe top.
5. steel trestle according to claim 4, it is characterised in that:The sealing plate outer rim forms the wing beyond the outer wall of steel pipe Listrium is provided with several stiffeners between the flange plate and the steel pipe lateral wall.
6. steel trestle according to claim 5, it is characterised in that:The beam body along bridge to the corresponding riverbank in both ends or It is provided with the abutment for being used to support beam body on the islands Zhe Zhu, the support type for being used to support beam body end is provided on the abutment Material, the support proximate matter include at least two I-steel arranged side by side, and the lower side wing and the abutment of the I-steel are solid It is fixed to connect, it is to be fixedly connected between the upper side wing of the I-steel.
7. steel trestle according to claim 6, it is characterised in that:The beam body is inclined along bridge to the beam body segment at both ends Tiltedly setting, is additionally provided with wedge cushion block between the support proximate matter and the beam body, the upside of the correcting wedge for institute State that beam body is matched skewed, the downside of correcting wedge is connected with the support proximate matter.
8. steel trestle according to claim 7, it is characterised in that:It is covered with protection against erosion on the soil body below the abutment Sandbag.
9. steel trestle according to claim 8, it is characterised in that:The beam body includes several beam body segments, the beam body Segment is spliced using beret slice, and the beret slice is arranged in the lateral of the steel-pipe pile, is provided on the beret slice Connecting cross beam corresponding with the lateral, the connecting cross beam is arranged along direction across bridge, and is pressed together on the beret slice lower boom Upside is also associated with montant between the connecting cross beam and the lateral.
10. steel trestle according to claim 9, it is characterised in that:It is provided with bridge deck structure on the beam body segment, it is described Bridge deck structure includes several first distribution beams being laid in the beam body, and several be arranged in first distribution beam Two distribution beams, first distribution beam and the second distribution beam are perpendicular, and the bridge deck structure further includes being laid on described second point With the bridge surface armor plate on beam.
CN201810975499.6A 2018-08-24 2018-08-24 Steel trestle suitable for hard stratum Active CN108797323B (en)

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CN110055895A (en) * 2019-03-20 2019-07-26 广州市第二市政工程有限公司 A kind of economical and practical steel trestle construction method
CN110847047A (en) * 2019-11-21 2020-02-28 中交第二航务工程局有限公司 Open sea bare rock trestle construction method

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CN106351242A (en) * 2016-08-31 2017-01-25 中交第二航务工程局有限公司 Deepwater high-flow-rate exposed high-strength steep rock sea area steel trestle and construction method thereof
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CN110055895A (en) * 2019-03-20 2019-07-26 广州市第二市政工程有限公司 A kind of economical and practical steel trestle construction method
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CN110847047B (en) * 2019-11-21 2021-11-26 中交二航局第一工程有限公司 Open sea bare rock trestle construction method

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