CN106759418A - A kind of pier footing and its construction method - Google Patents
A kind of pier footing and its construction method Download PDFInfo
- Publication number
- CN106759418A CN106759418A CN201710038059.3A CN201710038059A CN106759418A CN 106759418 A CN106759418 A CN 106759418A CN 201710038059 A CN201710038059 A CN 201710038059A CN 106759418 A CN106759418 A CN 106759418A
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- Prior art keywords
- chain
- pier
- pier footing
- footing
- knife
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
Abstract
Proposed by the present invention is a kind of pier footing and its construction method, and its purpose is intended to the defect for overcoming prior art to exist.The bottom of pier footing is provided with the track of chain knife operation, is provided with the chain knife for excavating ground during construction on track, and chain knife is made up of chain and the cutter being fixed on chain；Chain type excavating gear is mainly made up of chain knife and transmission device etc., and transmission device is mainly made up of sprocket wheel and drive device etc.；Drive device drive chain knife, chain knife runs along track, and the cutter of pier footing bottom excavates ground, and the ground that the chain knife for running vertically upward will have been excavated delivers to top, and the chain knife and pier footing of pier footing bottom decline together.Advantage：Overcome the defect of prior art presence, because pier footing itself carries chain type excavating gear, so be not required to live overall excavation can be on workshop precast pier basis, decline when pouring in fixed form that can also be at the scene, construction is simple, especially entire lowering waterproof is especially good, short construction period, low cost.
Description
Technical field
The present invention relates to a kind of pier footing and its construction method, belong to science of bridge building foundation construction technical field.
Background technology
The form of construction work that existing pier footing technology is typically excavated again using first cofferdam, long construction period, labour intensity is big,
Work circumstances safe degree is poor.
Existing well foundation technology, it is cut the earth with well, is overcome wall friction resistance to sink to by self gravitation and is set
The basis of back cover is carried out after meter absolute altitude；Its major defect：Long construction period cost is high, and correction is difficult, meets the barrier such as shaft bottom boulder
When hindering thing, cutting shoe is difficult to overcome easily there is prominent heavy, accident-proneness etc..
The content of the invention
Proposed by the present invention is a kind of pier footing and its construction method, and its purpose is intended to overcome lacking for prior art presence
Fall into.
Its major advantage：1）Pier footing 1 precasting yard not only can integrally but also sectional manufacture, it is also possible to fixation at the scene
Decline when pouring in template, easy construction；2）Simple structure；3）Integral sinking, short construction period, low cost at the scene.
Such as apply in well foundation field, its major advantage：1）Well foundation is segmented in precasting yard and manufactures, it is also possible to existing
Decline when pouring in the fixed form of field, simple quality of constructing is good；2）Integral sinking, short construction period, low cost at the scene；
3）Being particularly suitable for shaft bottom has the construction of the barriers such as boulder.
Technical solution of the invention：The bottom of pier footing is provided with the track of chain knife operation, pacifies on track during construction
Equipped with the chain knife for excavating ground, chain knife is made up of chain and the cutter being fixed on chain；Chain type excavating gear is main by chain knife
Constituted with transmission device etc., transmission device is mainly made up of sprocket wheel and drive device etc.；Drive device drive chain knife, chain knife along
Track runs, and the cutter of pier footing bottom excavates ground, and the ground that the chain knife for running vertically upward will have been excavated delivers to top,
The chain knife and pier footing of pier footing bottom decline together.
Prefabrication point following steps：
1）Piecemeal or integral prefabricated pier footing at workshop；
2）On-site consolidation pier footing and squatting position are transported to, and chain knife is installed on the track of its bottom；
3）The devices such as chain drive are installed, the chain of cutter is connected and installed with；
4）Drive chain, chain knife excavates the ground of pier footing bottom, the chain knife-band through running vertically upward to top, bottom
Chain knife and pier footing decline therewith；
5）It is in the milk again after dropping to projected depth post-grouting, or dismounting chain knife.
Cast-in-place method point following steps：
1）Site clearing, builds job platform；
2）Assembling pier footing bottom, and chain knife is installed on the track of its bottom；
3）Assembling intermediate stand, upper stand and formwork for placing；
4）Chain drive, tensioning apparatus are installed, the chain knife of pier footing bottom, intermediate stand, upper stand is connected into
Integrally, chain type excavating gear is constituted；
5）Steel reinforcement cage is made, in a template casting concrete；
6）Drive chain, chain-driving cutter runs along track, and the chain knife of pier footing bottom excavates ground, transports vertically upward
The ground that capable chain knife will have been excavated is delivered to top, and pier footing declines therewith；
7）With the decline of pier footing bottom, the pier footing in template declines when pouring；
8）Drop to projected depth and remove chain knife post-grouting, remove formwork for placing.
Advantages of the present invention：The defect of prior art presence is overcome, because pier footing itself excavates dress with chain type
Put, so be not required to live overall excavation can be on workshop precast pier basis, it is also possible to which side pours in fixed form at the scene
Side declines, and construction is simple, and especially entire lowering waterproof is especially good, short construction period, low cost.
Brief description of the drawings
Fig. 1 is the structural representation of pier footing 1, when being also the excavation pier footing bottom rock-soil of chain type excavating gear 2
Structural representation, is also that the base track of pier footing 1 has difference in height, is easy to chain knife 3 in the structure of the operation of intersection
Schematic diagram；
Fig. 2 is the A direction views of Fig. 1, is also the structure of the drive device 4, tensioning apparatus 5 and sprocket wheel 6 that constitute chain type excavating gear 2
Schematic diagram；
Fig. 3 is the B-B sectional views of Fig. 1, is also that chain knife 3 had not only excavated ground but also is ground horizontal conveyer 7- in pier footing bottom
1 structural representation；
Fig. 4 is the C-C sectional views of Fig. 1, is also that the structure for covering the vertical ground conveyer 7-2 that 1-3 is constituted by chain knife 3 and side is shown
It is intended to；
Fig. 5 is the structural representation of chain knife 3, and (a) is the structural representation of chain 3-1 and cutter 3-2, is also by A crossed joints 3-
The structural representation of the crossed joint of the chain 3-1 of 1-1 and B crossed joints 3-1-2 compositions；It is also that chain 3-1 realizes curvature of space
Structural representation.B () is the structural representation that chain knife is made up of rope 3-1B and cutter 3-2B；It is also rope 3-1B and cutter 3-
The structural representation of 2B；
Fig. 6 is the A methods construction schematic diagram of pier footing 1；
Fig. 7 is the B methods construction schematic diagram of pier footing 1, is also base track B-1, the structural representation of formwork for placing B-4,
It is that upper stand B-3 is fixed on the structural representation that job platform is not lifted；
Fig. 8 is the top view of A1 type pier footings 8-1, and its below ground portions in phantom represents that chain knife 3 can be in job platform
Cutter 3-2 on upper replacing chain, to adapt to the different geological conditions of different depth；
Fig. 9 is the A direction views of Fig. 8；
Figure 10 is the B-B views of Fig. 9, is also A1 type pier footing 8-1 ground above section structural representation；
Figure 11 is the C-C views of Fig. 9, is also A1 type pier footing 8-1 below ground part-structure schematic diagrams；
Figure 12 is the top view of A2 type pier footings 8-2, and its below ground portions in phantom is represented；
Figure 13 is the A direction views of Figure 12；
Figure 14 is the B-B views of Figure 13, is also A2 type pier footing 8-2 ground above section structural representation；
Figure 15 is the C-C views of Figure 13, is also A2 type pier footing 8-2 below ground part-structure schematic diagrams；
Figure 16 is the top view of A3 type pier footings 8-3, and its below ground portions in phantom is represented；
Figure 17 is the A direction views of Figure 16；
Figure 18 is the B-B views of Figure 17, is also A3 type pier footing 8-3 ground above section structural representation；
Figure 19 is the C-C views of Figure 17, is also A3 type pier footing 8-3 below ground part-structure schematic diagrams；
Figure 20 is the top view of A4 type pier footings 8-4, and its below ground portions in phantom is represented；
Figure 21 is the A direction views of Figure 20；
Figure 22 is the B-B views of Figure 21, is also A4 type pier footing 8-4 ground above section structural representation；
Figure 23 is the top view of B1 type pier footings 9-1, is also by four blocks of plates B1 type pier footings 9-1 that mutually insertion is formed
Structural representation；
Figure 24 is the A direction views of Figure 23, is also to constitute each block of plate of B1 type pier footings 9-1 by the order of setting with its bottom
Structural representation when the chain knife 3 in portion sinks successively together；
Figure 25 is the B direction views of Figure 23, is also the structure of the vertical ground conveying device 7-2 being made up of chain knife 3 and side cover 1-3
Schematic diagram；
Figure 26 is the C-C views of Figure 23, is also B1 type pier footing 9-1 lower ending openings, in ground level position casting concrete
Binding increases the structural representation of bearing capacity；
Figure 27 is the structural representation of B2 type pier footings 9-2, is sprocket wheel 6 and the structural representation of chain knife 3 of chain type excavating gear 2
Figure is also B2 type pier footing 9-2 with bottom chain knife 3 together integral sinking when structural representation, B2 type pier footings
Below ground part is consistent with the cross sectional shape of ground above section, i.e., pier shaft section is identical with basic section；
Figure 28 is the A direction views of Figure 27, is also the schematic diagram that B2 type pier footings 9-2 tops build a bridge, B2 type pier footings
9-2 casting concrete welding inside ground level position is sealed, and increases axial carrying capacity；
Figure 29 is the B-B views of Figure 28；
Figure 30 is the structural representation of B3 type pier footings 9-3, B3 types pier footing below ground part and ground above section
Structure it is different, i.e., pier shaft section differs with basis section；
Figure 31 is the A-A views of Figure 30；
Figure 32 is the structural representation of B4 type pier footings 9-4；
Figure 33 is the A direction views of Figure 32；
Figure 34 is the B-B views of Figure 33；
Figure 35 is the structural representation of B5 type pier footings 9-5, and B5 type pier footings are mainly used in main pier basis higher, adopt
A basis is shared with four pier footings, each pier footing internal reservation construction passage carries out bottom envelope into infrastructure
Top reinforces, and increases the bearing capacity of pier footing；
Figure 36 is the A direction views of Figure 35；
Figure 37 is the B-B views of Figure 35, is also that pier footing internal reservation construction passage carries out bottom and binds into infrastructure
Reinforce, increase the structural representation of the bearing capacity of pier footing；
Figure 38 is the structural representation of c-type pier footing 10, and c-type pier footing 10 mainly includes base foundation 10-1, immersed tube 10-
2 and tie-beam 10-3, it is adaptable to deep water；
Figure 39 is the A-A views of Figure 38；
Figure 40 is the B-B views of Figure 38；
Figure 41 is partial enlarged view at the I of Figure 38；
Figure 42 is the top view of caisson foundation 11；
Figure 43 is the A-A views of Figure 42；
Figure 44 is the base track of pier footing 1 and the structural representation of side rails, the type of track include a, b, c1, c2 and
Totally 5 kinds of d, wherein a are planes, and b is convex, and c is matrix；
Figure 45 is the d types track of pier footing 1 and the structural representation of chain knife；
Figure 46 is that d is the multiple rows of structural representation for staggering into tapered track in longitudinal direction.
In figure 1 is pier footing of the bottom with excavating gear；1-1 is the rail that chain knife 3 is run in the bottom of pier footing 1
Road；1-2 is the track that chain knife 3 is run in the side of pier footing 1；1-3 is the side cover of the pier footing 1 of the bottom belt basil；2 be by
The chain type excavating gear of the compositions such as chain knife 3, drive device 4, tensioning apparatus 5, sprocket wheel 6；3 is the chain for constituting chain type excavating gear 2
Knife；3-1 is the chain for constituting chain knife 3, including crawler belt, rope and flexible-belt；3-1-1 is the A crossed joints for constituting chain crossed joint；
3-1-2 is the B crossed joints for constituting chain crossed joint；3-1B is the cable wire for constituting chain knife 3；3-2 is integrally fixed at the digging on chain 3-1
Dig the cutter of ground；3-2B is integrally fixed at the cutter of the excavation ground on cable wire 3-1B；4 is the drive device of chain 3-1；5 are
The tensioning apparatus of chain 3-1；6 is the sprocket wheel for running chain 3-1；7 is ground conveyer；7-1 is chain type horizontal ground conveyer；
7-2 is the vertical ground conveyer of chain type；8 is A type pier footings；8-1 is A1 type pier footings；8-2 is A2 type pier footings；8-
3 is A3 type pier footings；8-4 is A4 type pier footings；9 is Type B pier footing；9-1 is B1 type pier footings；9-2 is B2 types
Pier footing；9-3 is B3 type pier footings；9-4 is B4 type pier footings；9-5 is B5 type pier footings；10 is c-type bridge pier base
Plinth；10-1 is the base foundation of c-type pier footing 10；10-2 is the immersed tube of c-type pier footing 10；10-3 is c-type pier footing
10 tie-beam；11 is that bridge pier is caisson foundation；B-1 is the base track in B methods；B-2 is the intermediate stand in B methods；B-3 is
Upper stand in B methods；B-4 is the formwork for placing in B methods.
Specific embodiment
A kind of bottom of pier footing is provided with the track of chain knife operation, is provided with the chain for excavating ground during construction on track
Knife, chain knife is made up of chain and the cutter being fixed on chain；Chain type excavating gear is mainly made up of chain knife and transmission device etc.,
Transmission device is mainly made up of sprocket wheel and drive device etc.；Drive device drive chain knife, chain knife runs along track, pier footing
The cutter of bottom excavates ground, and the ground that the chain knife for running vertically upward will have been excavated delivers to top, the chain of pier footing bottom
Knife and pier footing decline together.
Described chain knife is that the cutter on chain is changed on job platform or in passage, to adapt to different depth not
Same geological conditions.
Described chain knife is many row chain knives in width, and many row chain knives carry out excavating simultaneously or digging respectively as needed
Pick.
Described bridge pier foundation in construction duration method is prefabrication, point following steps：
1）Piecemeal or integral prefabricated pier footing at workshop；
2）On-site consolidation pier footing and squatting position are transported to, and chain knife is installed on the track of its bottom；
3）The devices such as chain drive are installed, the chain of cutter is connected and installed with；
4）Drive chain, chain knife excavates the ground of pier footing bottom, the chain knife-band through running vertically upward to top, bottom
Chain knife and pier footing decline therewith；
5）It is in the milk again after dropping to projected depth post-grouting, or dismounting chain knife.
Described bridge pier foundation in construction duration method is cast-in-place method, and concrete of the pier footing in addition to bottom is stent at the scene
Poured in plate, fixed form is motionless during construction, the excavation pier footing with bottom rock-soil sinks when pouring；Chain type is excavated
Device is arranged in frame, and frame is made up of intermediate stand and upper stand, the bottom of intermediate stand and the bottom of pier footing
It is connected, intermediate stand top is connected with upper stand, and the track of chain knife operation is provided with intermediate stand, and intermediate stand is bridge pier
The part of reinforcement foundation cage, it is vertical that the chain knife and the closing chamber of intermediate stand run by bottom up constitute chain type ground
Conveyer, with the sinking of pier footing bottom, middle device also synchronously sinks；Upper stand is fixed on job platform or solid
Due to the top of intermediate stand, upper stand is provided with chain drive and tensioning apparatus, and the chain of pier footing bottom leads to
The drive device of intermediate stand and upper stand, tensioning apparatus is crossed to be connected；Cast-in-place method point following steps：
1）Site clearing, builds job platform；
2）Assembling pier footing bottom, and chain knife is installed on the track of its bottom；
3）Assembling intermediate stand, upper stand and formwork for placing；
4）Chain drive, tensioning apparatus are installed, the chain knife of pier footing bottom, intermediate stand, upper stand is connected into
Integrally, chain type excavating gear is constituted；
5）Steel reinforcement cage is made, in a template casting concrete；
6）Drive chain, chain-driving cutter runs along track, and the chain knife of pier footing bottom excavates ground, transports vertically upward
The ground that capable chain knife will have been excavated is delivered to top, and pier footing declines therewith；
7）With the decline of pier footing bottom, the pier footing in template declines when pouring；
8）Drop to projected depth and remove chain knife post-grouting, remove formwork for placing.
Described pier footing is A type pier footings.
Described pier footing is Type B pier footing.
Described pier footing c-type pier footing.
Described pier footing is well foundation.
The chain of described composition chain knife is the chain of broad sense, including crawler belt, rope and flexible-belt.
Technical scheme is further described below in conjunction with the accompanying drawings：
As shown in Fig. 1~Fig. 5, bridge pier be provided with chain type excavating gear 2 operation track 1-1 and 1-2, chain type excavating gear 2 by
Chain knife 3, drive device 4, tensioning apparatus 5 and sprocket wheel 6 are constituted, and chain knife 3 is by chain 3-1 and the cutter 3-2 groups being fixed on chain
Into；Drive device 4 drive chain 3-1, chain 3-1 band cutter 3-2 run along track during construction, the knife of pier footing bottom
Tool 3-2 excavates ground, and the horizontal chain knife 3-2 of pier footing bottom is simultaneously horizontal ground conveyer 7-1, is moved bottom-up
Chain knife 3-2 and side cover 1-3 constitute the vertical ground conveyer 7-2 of chain type, from pier footing bottom excavate ground through water
Flat ground conveyer 7-1 to the vertical ground conveyer 7-2 of chain type reaches top, and bottom chain knife 3 and pier footing 1 are together under synchronization
Drop, chain 3-1 is disconnected after dropping to set depth, chain knife 3 all is drawn up into recovery through drive device, then be in the milk.
As shown in fig. 6, pier footing is using A methods prefabrication point following steps：
1）In workshop precast block pier footing 1, on-site consolidation pier footing 1 and squatting position are transported to, and on the track of its bottom
Chain knife 3 is installed, the grade device of chain drive 4 is installed, the chain 3-1 of digging cutter 3 is connected and installed with, as shown in the A in figure；
2）Drive chain 3-1, chain knife excavates the ground of bottom, and top is delivered to through ground conveying device 7, and pier footing is under
Drop, as shown in B in figure；
3）After dropping to certain depth, in the prefabricated component of installation on ground pier footing 1, also can be assembled in sinking, such as C institutes in figure
Show；
4）It is in the milk again after dropping to projected depth post-grouting, or dismounting chain knife 3, as shown by d in the figure.
As shown in fig. 7, pier footing is using the cast-in-place method of B methods point following steps：
1）Site clearing, builds job platform；
2）The bottom squatting position of base track B-1 and formwork for placing B-4, i.e. pier footing 1 is assembled, and is pacified on the track of its bottom
Dress chain knife 3；
3）Assembling intermediate stand B-2, upper stand B-3；
4）Install chain drive 4, tensioning apparatus 5, by base track B-1, intermediate stand B-2, upper stand B-3 chain
3-1 links into an integrated entity, composition chain type excavating gear 2；
5）Steel reinforcement cage is made, intermediate stand B-2 is integrally welded with steel reinforcement cage, and intermediate stand B-2 is also simultaneously formwork for placing
Part；
6）The casting concrete in template B-4；
7）Drive chain 3-1, chain knife 3 excavates the ground of bottom, and the ground that will have been excavated is delivered to through middle device B-2
Side, pier footing 1 declines therewith；
8）With the excavation of the bottom of pier footing 1, the pier footing 1 in template B-4 declines when pouring；
9）Drop to projected depth and remove the post-grouting of chain knife 3；
10）The part of upper stand and middle device higher than pier footing 1 is removed, formwork for placing is removed；
The description for having been carried out to bridge pier 1 above, below the various structures of bridge pier can be similar to construction.
As shown in Fig. 8~Figure 11, pier footing 1 is A1 type pier footing 8-1, and below ground part is I-shaped, ground
It is above yi word pattern, below ground pier section area is bigger than ground above pier section area, and bearing capacity is strong, more than ground
Bridge pier floor space is small.
As shown in Figure 12~Figure 15, pier footing 1 is A2 type pier footing 8-2, and below ground part is I-shaped, ground
It is above each yi word pattern in both sides, below ground pier section area is bigger than ground above pier section area, bearing capacity
By force, above bridge pier in ground is in both sides into yi word pattern.
As shown in Figure 16~Figure 19, pier footing 1 is A3 type pier footing 8-3, and below ground part is I-shaped, ground
Above for each one of both sides it is cross, ground above pier section area is big and rigidity is preferable, it is adaptable to ground above bridge pier compared with
Bridge high.
As shown in Figure 20~Figure 22, pier footing 1 is A4 type pier footing 8-4, and below ground part is I-shaped, ground
It is above each cylindrical type in both sides, below ground pier section area is bigger than ground above pier section area, bearing capacity
By force.
As shown in Figure 23~Figure 26, pier footing 1 is B1 type pier footing 9-1, and below ground part is the bridge of intersecting parallels
Pier, lower ending opening, in face, height and position casting concrete binds increase bearing capacity.
As shown in Figure 27~Figure 29, pier footing 1 is B2 type pier footing 9-2, the pier section shape of ground above section
Shape is identical with the pier section shape of below ground part, is all intersecting parallels, bridge pier lower ending opening, and in face, height and position pours mixed
Solidifying grave top increases bearing capacity.
As shown in Figure 30~Figure 31, pier footing 1 is B3 type pier footing 9-3, the pier section shape of ground above section
Shape is different with the pier section shape of below ground part, and below ground is intersecting parallels, more than ground is hollow rectangle.
As shown in Figure 32~Figure 34, pier footing 1 is B4 type pier footing 9-4, and below ground part is intersecting parallels, ground
Above section is that respectively have a cross on four angles, and ground above pier stiffness is good, and bearing capacity is strong, it is adaptable to bridge of deciding
Pier.
As shown in Figure 35~Figure 37, pier footing 1 is B5 type pier footing 9-5, and below ground part is intersecting parallels bridge pier
Basis, a basis is shared using four bridge piers, and each bridge pier internal reservation construction passage carries out bottom envelope into infrastructure
Top reinforces, and increases the bearing capacity of bridge pier, it is adaptable to the main pier of drag-line bridge.
As shown in Figure 38~Figure 41, pier footing 1 is c-type pier footing 10, it is adaptable to profundal zone, using immersed tube 10-2 and
Tie-beam 10-3 constitutes a water-bed dry work environment, and in immersed tube bottom, construction pier footing 10-1, pier footing 10-1 are
Chain knife is arranged at intersecting parallels bridge pier, bottom, and chain knife excavates ground bridge pier and declines with chain knife one, reinforcing of being bound after arrival set depth, this
Sample pier footing 10-1, immersed tube 10-2 and tie-beam 10-3 constitute deep water c-type pier footing 10.
As shown in Figure 42 and Figure 43, pier footing 1 is caisson foundation, it is adaptable to profundal zone, Bridge Piers basis.
Claims (10)
1. a kind of pier footing, it is characterized in that the bottom of pier footing is provided with the track of chain knife operation, installs during construction on track
There is the chain knife for excavating ground, chain knife is made up of chain and the cutter being fixed on chain；Chain type excavating gear it is main by chain knife and
Transmission device etc. is constituted, and transmission device is mainly made up of sprocket wheel and drive device etc.；Drive device drive chain knife, chain knife is along rail
Road runs, and the cutter of pier footing bottom excavates ground, and the ground that the chain knife for running vertically upward will have been excavated delivers to top, bridge
The chain knife and pier footing of pier foundation bottom decline together.
2. a kind of pier footing according to claim 1, it is characterized in that described chain knife is on job platform or passage
Cutter on interior replacing chain, to adapt to the different geological conditions of different depth.
3. a kind of pier footing according to claim 1, it is characterized in that described chain knife is many row chain knives in width,
Many row chain knives carry out excavating simultaneously or excavating respectively as needed.
4. a kind of bridge pier foundation in construction duration method according to claim 1, it is characterized in that described bridge pier foundation in construction duration method is pre-
Preparation method, point following steps：
1）Piecemeal or integral prefabricated pier footing at workshop；
2）On-site consolidation pier footing and squatting position are transported to, and chain knife is installed on the track of its bottom；
3）The devices such as chain drive are installed, the chain of cutter is connected and installed with；
4）Drive chain, chain knife excavates the ground of pier footing bottom, the chain knife-band through running vertically upward to top, bottom
Chain knife and pier footing decline therewith；
5）It is in the milk again after dropping to projected depth post-grouting, or dismounting chain knife.
5. a kind of bridge pier foundation in construction duration method according to claim 1, it is characterized in that described bridge pier foundation in construction duration method is existing
Pour method, concrete of the pier footing in addition to bottom is poured in fixed form at the scene, and fixed form is motionless during construction, with
The excavation pier footing for bottom rock-soil sinks when pouring；Chain type excavating gear is arranged in frame, and frame is by intermediate stand
Constituted with upper stand, the bottom of intermediate stand is connected with the bottom of pier footing, intermediate stand top is connected with upper stand,
The track of chain knife operation is installed, intermediate stand is the part of pier footing steel reinforcement cage, by bottom up in intermediate stand
The chain knife of operation and the closing chamber of intermediate stand constitute chain type ground vertical conveyor, with the sinking of pier footing bottom,
Middle device also synchronously sinks；Upper stand is fixed on job platform or is fixed on the top of intermediate stand, upper stand peace
Equipped with chain drive and tensioning apparatus, the chain of pier footing bottom is filled by intermediate stand with the driving of upper stand
Put, tensioning apparatus is connected；Cast-in-place method point following steps：
1）Site clearing, builds job platform；
2）Assembling pier footing bottom, and chain knife is installed on the track of its bottom；
3）Assembling intermediate stand, upper stand and formwork for placing；
4）Chain drive, tensioning apparatus are installed, the chain knife of pier footing bottom, intermediate stand, upper stand is connected into
Integrally, chain type excavating gear is constituted；
5）Steel reinforcement cage is made, in a template casting concrete；
6）Drive chain, chain-driving cutter runs along track, and the chain knife of pier footing bottom excavates ground, transports vertically upward
The ground that capable chain knife will have been excavated is delivered to top, and pier footing declines therewith；
7）With the decline of pier footing bottom, the pier footing in template declines when pouring；
8）Drop to projected depth and remove chain knife post-grouting, remove formwork for placing.
6. a kind of pier footing according to claim 1, it is characterised in that described pier footing is A type pier footings.
7. a kind of pier footing according to claim 1, it is characterised in that described pier footing is Type B pier footing.
8. a kind of pier footing according to claim 1, it is characterised in that described pier footing is c-type pier footing.
9. a kind of pier footing according to claim 1, it is characterised in that described pier footing is well foundation.
10. a kind of pier footing according to claim 1, it is characterised in that the chain of described composition chain knife is broad sense
Chain, including crawler belt, rope and flexibility.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038059.3A CN106759418A (en) | 2017-01-18 | 2017-01-18 | A kind of pier footing and its construction method |
| PCT/CN2018/071980 WO2018133711A1 (en) | 2017-01-18 | 2018-01-09 | Pier foundation and construction method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038059.3A CN106759418A (en) | 2017-01-18 | 2017-01-18 | A kind of pier footing and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106759418A true CN106759418A (en) | 2017-05-31 |
Family
ID=58944082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710038059.3A Pending CN106759418A (en) | 2017-01-18 | 2017-01-18 | A kind of pier footing and its construction method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106759418A (en) |
| WO (1) | WO2018133711A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133740A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Underground building and construction method for same |
| WO2018133739A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Foundation having chain cutter at base during construction and construction method of same |
| WO2018133711A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Pier foundation and construction method therefor |
| CN109778909A (en) * | 2019-03-06 | 2019-05-21 | 王燏斌 | A kind of sinking construction method and its constructing device for basement |
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| JPS5985021A (en) * | 1982-11-05 | 1984-05-16 | Kajima Corp | Method and apparatus for construction of underground continuous wall |
| JPS62233328A (en) * | 1986-04-01 | 1987-10-13 | Fusao Sakano | Method and apparatus for setting retaining wall by excavator |
| JPH04179726A (en) * | 1990-11-13 | 1992-06-26 | Kazutoshi Isachi | Wall member in simplified underground continuous wall construction method and simplified underground continuous wall construction method using the same |
| CN100547178C (en) * | 2008-01-04 | 2009-10-07 | 贵州省桥梁工程总公司 | Bridge foundation construction method in the water |
| CN105569064A (en) * | 2015-12-10 | 2016-05-11 | 中铁大桥局集团有限公司 | Arrangement type sunk well foundation construction method applicable to deepwater bare rock |
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| DE2627392C2 (en) * | 1976-06-18 | 1978-06-01 | Pohlig-Heckel-Bleichert Vereinigte Maschinenfabriken Ag, 5000 Koeln | Bridge scraper for removing bulk goods |
| SU1308675A1 (en) * | 1985-11-13 | 1987-05-07 | Специальное Конструкторское Бюро Главмостостроя | Arrangement for moving-on a bridge span structure |
| CN2079201U (en) * | 1990-11-28 | 1991-06-19 | 天津市自来水公司 | Chain-knife type dredging control machine |
| CN105133627B (en) * | 2015-07-28 | 2017-03-01 | 安徽省新路建设工程集团有限责任公司 | Construction under single wall steel sheet-pile cofferdam flowing water state |
| CN106759418A (en) * | 2017-01-18 | 2017-05-31 | 王燏斌 | A kind of pier footing and its construction method |
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2017
- 2017-01-18 CN CN201710038059.3A patent/CN106759418A/en active Pending
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2018
- 2018-01-09 WO PCT/CN2018/071980 patent/WO2018133711A1/en active Application Filing
Patent Citations (5)
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| JPS5985021A (en) * | 1982-11-05 | 1984-05-16 | Kajima Corp | Method and apparatus for construction of underground continuous wall |
| JPS62233328A (en) * | 1986-04-01 | 1987-10-13 | Fusao Sakano | Method and apparatus for setting retaining wall by excavator |
| JPH04179726A (en) * | 1990-11-13 | 1992-06-26 | Kazutoshi Isachi | Wall member in simplified underground continuous wall construction method and simplified underground continuous wall construction method using the same |
| CN100547178C (en) * | 2008-01-04 | 2009-10-07 | 贵州省桥梁工程总公司 | Bridge foundation construction method in the water |
| CN105569064A (en) * | 2015-12-10 | 2016-05-11 | 中铁大桥局集团有限公司 | Arrangement type sunk well foundation construction method applicable to deepwater bare rock |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133740A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Underground building and construction method for same |
| WO2018133739A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Foundation having chain cutter at base during construction and construction method of same |
| WO2018133711A1 (en) * | 2017-01-18 | 2018-07-26 | 王燏斌 | Pier foundation and construction method therefor |
| CN109778909A (en) * | 2019-03-06 | 2019-05-21 | 王燏斌 | A kind of sinking construction method and its constructing device for basement |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018133711A1 (en) | 2018-07-26 |
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Address after: 214000 No. 226, Xi Da Road, Mei Cun town, Xin Wu District, Wuxi, Jiangsu Applicant after: Wang Yubin Address before: 214000 Xinhua Road 121, Meishan Town, Wuxi New District, Jiangsu Applicant before: Wang Yubin |
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